/* ============================================
   LMS Component Library - Phase 1
   ============================================ */

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0) scale(0.98);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-300);
}

.btn-success {
    background-color: var(--color-success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background-color: #059669;
}

.btn-danger {
    background-color: var(--color-error);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid currentColor;
}

.btn-outline.btn-primary {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: white;
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-gray-700);
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-gray-100);
}

/* ============================================
   Cards
   ============================================ */

.card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
    /* Consistent card spacing - no default margin */
    margin-bottom: 0;
}

/* Card spacing in grids - handled by gap utility */
.grid .card,
.grid-2 .card,
.grid-3 .card,
.grid-4 .card {
    margin-bottom: 0;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--color-gray-300);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray-900);
}

.card-body {
    margin-bottom: var(--spacing-md);
}

.card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Course Card */
.course-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.course-card-image-link {
    display: block;
    position: relative;
    overflow: hidden;
}

.course-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--color-gray-200);
    transition: transform var(--transition-base);
    max-width: 100%;
}

.course-card:hover .course-card-image {
    transform: scale(1.05);
}

.course-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    background-color: var(--color-gray-800);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.course-card-discount-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    z-index: 1;
}

.course-card-category {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-card-title-link {
    display: block;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.course-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-900);
}

.course-card-title a {
    color: inherit;
}

.course-card-title a:hover {
    color: var(--color-primary);
}

.course-card-description {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
}

.course-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    margin-top: auto;
    border-top: 1px solid var(--color-gray-200);
}

.course-card-price {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.course-card-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Forms
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-family: inherit;
    background-color: white;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-bg);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
    opacity: 0.6;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-checkbox,
.form-radio {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--color-error);
}

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
    box-shadow: 0 0 0 3px var(--color-error-bg);
}

/* ============================================
   Badges & Tags
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--color-primary-bg);
    color: var(--color-primary);
}

.badge-success {
    background-color: var(--color-success-bg);
    color: #065f46;
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: #92400e;
}

.badge-error {
    background-color: var(--color-error-bg);
    color: #991b1b;
}

.badge-info {
    background-color: var(--color-info-bg);
    color: #1e40af;
}

.badge-neutral {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

/* ============================================
   Grid & Layout Utilities
   ============================================ */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Courses Layout Grid - Responsive sidebar + content */
.courses-layout-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* Courses Grid - Responsive card grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Form Input with Icon */
.form-input-wrapper {
    position: relative;
}

.form-input-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-400);
    pointer-events: none;
    z-index: 1;
}

.form-input-with-icon {
    padding-left: calc(var(--spacing-sm) * 2 + 20px);
}

.course-sort-select {
    width: auto;
    min-width: 120px;
}

/* Responsive Courses Layout */
@media (max-width: 968px) {
    .courses-layout-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .course-sidebar {
        margin-bottom: var(--spacing-lg);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .course-card-image {
        height: 180px;
    }
}

@media (max-width: 375px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .course-card-image {
        height: 160px;
    }
}

/* ============================================
   Legal Pages Styles
   ============================================ */

.legal-content {
    max-width: none;
    line-height: var(--line-height-relaxed);
}

.legal-content h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.legal-content ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.legal-content li {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.legal-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.legal-content a:hover {
    color: var(--color-primary-dark);
}

/* Responsive Legal Pages */
@media (max-width: 640px) {
    .legal-content h2 {
        font-size: var(--font-size-lg);
        margin-top: var(--spacing-xl);
    }
    
    .legal-content p,
    .legal-content li {
        font-size: var(--font-size-sm);
    }
    
    .legal-content ul {
        padding-left: var(--spacing-lg);
    }
}

@media (max-width: 375px) {
    .legal-content h2 {
        font-size: var(--font-size-base);
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-sm);
    }
    
    .legal-content p,
    .legal-content li {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .legal-content ul {
        padding-left: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .course-card-body {
        padding: var(--spacing-md);
    }
    
    .course-card-title {
        font-size: var(--font-size-base);
    }
    
    .course-card-description {
        font-size: var(--font-size-xs);
    }
    
    .course-card-footer {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .course-sort-select {
        width: 100%;
        min-width: 100%;
    }
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.ml-sm {
    margin-left: var(--spacing-sm);
}

.ml-md {
    margin-left: var(--spacing-md);
}

.ml-lg {
    margin-left: var(--spacing-lg);
}

.mb-xs {
    margin-bottom: var(--spacing-xs);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.mb-2xl {
    margin-bottom: var(--spacing-2xl);
}

.mb-0 {
    margin-bottom: 0;
}

.mt-xs {
    margin-top: var(--spacing-xs);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

/* Padding utilities */
.p-4xl {
    padding: var(--spacing-2xl);
}

.pb-lg {
    padding-bottom: var(--spacing-lg);
}

.pb-xl {
    padding-bottom: var(--spacing-xl);
}

/* Border utilities */
.border-b {
    border-bottom-width: 1px;
    border-bottom-style: solid;
}

.border-gray-200 {
    border-color: var(--color-gray-200);
}

.border-gray-100 {
    border-color: var(--color-gray-100);
}

/* Cursor utilities */
.cursor-pointer {
    cursor: pointer;
}

/* Height utilities */
.h-11 {
    height: 2.75rem;
}

/* Width utilities */
.min-w-300 {
    min-width: 300px;
}

.min-w-180 {
    min-width: 180px;
}

/* Table improvements */
table {
    border-collapse: separate;
    border-spacing: 0;
}

table thead th {
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
}

table tbody tr {
    transition: background-color var(--transition-fast);
}

table tbody tr:hover {
    background-color: var(--color-gray-50);
}

table tbody td {
    vertical-align: middle;
}

/* Form improvements */
.form-group {
    margin-bottom: 0;
}

.form-group:not(:last-child) {
    margin-bottom: 0;
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.flex-wrap {
    flex-wrap: wrap;
}

/* Space utilities */
.space-y-sm > * + * {
    margin-top: var(--spacing-sm);
}

.space-y-md > * + * {
    margin-top: var(--spacing-md);
}

.space-y-lg > * + * {
    margin-top: var(--spacing-lg);
}

.space-y-xl > * + * {
    margin-top: var(--spacing-xl);
}

/* ============================================
   Loading States
   ============================================ */

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.skeleton {
    background: linear-gradient(90deg, var(--color-gray-200) 25%, var(--color-gray-100) 50%, var(--color-gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   Responsive Grid Adjustments
   ============================================ */

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
        justify-content: center;
    }

    .course-card-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
}

/* ============================================
   Additional Utility Classes
   ============================================ */

.text-gray-500 {
    color: var(--color-gray-500);
}

.text-gray-600 {
    color: var(--color-gray-600);
}

.text-success {
    color: var(--color-success);
}

.text-primary {
    color: var(--color-primary);
}

.text-info {
    color: var(--color-info);
}

.text-warning {
    color: var(--color-warning);
}

.text-error {
    color: var(--color-error);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-600);
}

.empty-state h2 {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.empty-state p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   Course Detail Specific Styles
   ============================================ */

.course-detail-header {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.course-info {
    flex: 1;
}

.course-sidebar {
    background: var(--color-gray-100);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
    height: fit-content;
}

.course-thumbnail-large {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    background: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.course-price-large {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.course-price-large.free {
    color: var(--color-success);
}

.course-price-original {
    font-size: var(--font-size-xl);
    color: var(--color-gray-500);
    text-decoration: line-through;
    margin-right: var(--spacing-sm);
}

.course-discount-badge {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-xs);
}

.course-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.course-instructor-card {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.instructor-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.instructor-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.instructor-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.instructor-email {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.course-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

@media (max-width: 768px) {
    .course-detail-header {
        grid-template-columns: 1fr;
    }

    .course-sidebar {
        position: static;
    }
}

/* ============================================
   Learning Interface Styles
   ============================================ */

.video-player-container {
    width: 100%;
    max-width: 100%;
}

.video-player-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9 aspect ratio */
    background: var(--color-gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
}

.video-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.pdf-viewer-wrapper {
    width: 100%;
    height: 800px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.pdf-viewer {
    width: 100%;
    height: 100%;
    border: none;
}

.text-content {
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-900);
    font-size: var(--font-size-base);
}

.text-content h1,
.text-content h2,
.text-content h3,
.text-content h4,
.text-content h5,
.text-content h6 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
    font-weight: var(--font-weight-semibold);
}

.text-content p {
    margin-bottom: var(--spacing-md);
}

.text-content ul,
.text-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.text-content code {
    background: var(--color-gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

.text-content pre {
    background: var(--color-gray-100);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.text-content pre code {
    background: none;
    padding: 0;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s ease;
    border-radius: var(--radius-full);
}

.progress-fill.success {
    background: var(--color-success);
}

.progress-fill.warning {
    background: var(--color-warning);
}

.progress-fill.error {
    background: var(--color-error);
}

/* Quiz Styles */
.quiz-timer {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.quiz-timer.warning {
    color: var(--color-error);
    background: var(--color-error-bg);
}

.question-item {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-200);
}

.question-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.question-number {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.question-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.option-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    background: white;
}

.option-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.option-item.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.option-item.correct {
    background: var(--color-success-bg);
    border-color: var(--color-success);
    color: var(--color-success);
}

.option-item.incorrect {
    background: var(--color-error-bg);
    border-color: var(--color-error);
    color: var(--color-error);
}

.option-item input[type="radio"],
.option-item input[type="checkbox"] {
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

/* Quiz Results */
.score-circle {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    border: 10px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.score-circle.passed {
    border-color: var(--color-success);
    color: var(--color-success);
}

.score-circle.failed {
    border-color: var(--color-error);
    color: var(--color-error);
}

/* Curriculum Styles */
.lesson-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    cursor: pointer;
    transition: background var(--transition-base);
}

.lesson-item:hover {
    background: var(--color-gray-50);
}

.lesson-item:last-child {
    border-bottom: none;
}

.lesson-number {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    margin-right: var(--spacing-lg);
    flex-shrink: 0;
}

.lesson-number.completed {
    background: var(--color-success);
}

.lesson-type-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-right: var(--spacing-sm);
}

.type-video {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.type-pdf {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.type-text {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

/* ============================================
   File Upload Components
   ============================================ */

.file-upload-area {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    background: var(--color-gray-50);
    transition: all var(--transition-base);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.file-upload-area.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.file-upload-icon {
    font-size: var(--font-size-4xl);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-md);
}

.file-upload-text {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

.file-upload-hint {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.file-preview {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.file-preview img {
    max-width: 100px;
    max-height: 100px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.file-preview-info {
    flex: 1;
}

.file-preview-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.file-preview-size {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.file-preview-remove {
    color: var(--color-error);
    cursor: pointer;
    font-size: var(--font-size-xl);
}

/* Form Section Styles */
.type-section {
    display: none;
}

.type-section.active {
    display: block;
}

/* ============================================
   Touch Optimizations
   ============================================ */

/* Ensure minimum touch target size (44x44px) */
.btn,
.navbar-link,
.form-checkbox,
.form-radio,
.option-item {
    min-height: 44px;
    min-width: 44px;
}

.btn-sm {
    min-height: 36px;
    min-width: 36px;
}

/* Larger touch targets on mobile */
@media (max-width: 768px) {
    .btn {
        min-height: 48px;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .form-input,
    .form-select,
    .form-textarea {
        min-height: 44px;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }
}

/* ============================================
   Loading States
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.loading-text {
    color: white;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
}

/* Button loading state */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: var(--radius-full);
    animation: spin 0.6s linear infinite;
}

/* ============================================
   Empty States
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-600);
}

.empty-state-icon {
    font-size: var(--font-size-6xl);
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
    display: flex;
    justify-content: center;
    align-items: center;
}

.empty-state-icon i {
    font-size: inherit;
    color: var(--color-gray-400);
}

.empty-state h2 {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.empty-state p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state .btn {
    margin-top: var(--spacing-md);
}

/* ============================================
   Community Card Styles
   ============================================ */

.community-card {
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    display: flex;
    flex-direction: column;
}

.community-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.community-card:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.community-card:active {
    transform: translateY(0);
}

.community-card-footer {
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.gap-xs {
    gap: var(--spacing-xs);
}

/* ============================================
   Animation Refinements
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

.scale-in {
    animation: scaleIn 0.2s ease-out;
}

/* Smooth transitions for interactive elements */
.card,
.btn,
.navbar-link,
.form-input,
.form-select,
.form-textarea {
    transition: all var(--transition-base);
}

/* Hover effects */
@media (hover: hover) {
    .card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Enhanced focus for interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--color-primary-bg);
}

/* Skip link focus */
.skip-link:focus {
    top: 0;
    outline: 3px solid white;
    outline-offset: 2px;
}

/* Remove default focus outline and use custom */
*:focus {
    outline: none;
}

/* Ensure buttons are keyboard accessible */
button:not(:disabled),
a[role="button"] {
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid var(--color-gray-900);
    }

    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* ARIA live regions */
[role="status"],
[role="alert"] {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

[role="status"]:focus,
[role="alert"]:focus {
    position: static;
    left: auto;
    width: auto;
    height: auto;
    overflow: visible;
}

/* Ensure proper color contrast */
.text-gray-600 {
    color: var(--color-gray-600);
    /* Ensure 4.5:1 contrast ratio */
}

.text-gray-500 {
    color: var(--color-gray-500);
    /* Ensure 4.5:1 contrast ratio */
}

/* Form error association */
.form-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: block;
}

.form-input[aria-invalid="true"],
.form-select[aria-invalid="true"],
.form-textarea[aria-invalid="true"] {
    border-color: var(--color-error);
}

.form-input[aria-invalid="true"]:focus,
.form-select[aria-invalid="true"]:focus,
.form-textarea[aria-invalid="true"]:focus {
    outline-color: var(--color-error);
    box-shadow: 0 0 0 4px var(--color-error-bg);
}

/* Required field indicator */
.form-label.required::after {
    content: " *";
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

/* Loading state announcement */
.loading-announcement {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Ensure images have alt text - visual indicator in development */
img:not([alt]),
img[alt=""] {
    border: 2px dashed var(--color-warning);
}

/* Decorative images should have empty alt */
img[role="presentation"],
img[aria-hidden="true"] {
    border: none;
}

/* Landmark roles */
main[role="main"] {
    outline: none;
}

nav[role="navigation"] {
    outline: none;
}

/* Ensure proper heading hierarchy */
h1+h3,
h2+h4 {
    margin-top: var(--spacing-md);
}

/* Fieldset and legend styling */
fieldset {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

legend {
    padding: 0 var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

/* Ensure all images have alt text styling */
img[alt=""] {
    border: 2px dashed var(--color-warning);
}

/* Keyboard navigation improvements */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    z-index: 1;
}

/* Ensure sufficient color contrast for text */
.text-gray-600 {
    color: var(--color-gray-600);
    /* WCAG AA: 4.5:1 contrast ratio */
}

.text-gray-500 {
    color: var(--color-gray-500);
    /* WCAG AA: 4.5:1 contrast ratio */
}

/* Link contrast */
a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

a:hover,
a:focus {
    color: var(--color-primary-dark);
    text-decoration-thickness: 2px;
}

/* Ensure buttons have sufficient contrast */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
    /* WCAG AA: 4.5:1 contrast ratio */
}

.btn-secondary {
    background-color: var(--color-gray-600);
    color: white;
    /* WCAG AA: 4.5:1 contrast ratio */
}

/* Form validation states */
.form-input:invalid:not(:focus):not(:placeholder-shown),
.form-select:invalid:not(:focus),
.form-textarea:invalid:not(:focus):not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-input:valid:not(:focus):not(:placeholder-shown),
.form-select:valid:not(:focus),
.form-textarea:valid:not(:focus):not(:placeholder-shown) {
    border-color: var(--color-success);
}

/* Ensure table headers are properly associated */
table th {
    font-weight: var(--font-weight-semibold);
}

table th[scope="col"] {
    text-align: left;
}

table th[scope="row"] {
    text-align: right;
    padding-right: var(--spacing-md);
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
}

@media (max-width: 768px) {
    .video-player-wrapper {
        padding-bottom: 56.25%;
    }

    .pdf-viewer-wrapper {
        height: 600px;
    }

    .quiz-timer {
        font-size: var(--font-size-xl);
    }

    .file-upload-area {
        padding: var(--spacing-lg);
    }

    .empty-state {
        padding: var(--spacing-xl);
    }

    .empty-state-icon {
        font-size: var(--font-size-4xl);
    }
}

/* ============================================
   Landing Page Styles
   ============================================ */

.landing-hero {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-xl) var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
    overflow: hidden;
    margin-top: 0;
}

.landing-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.landing-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.landing-hero-text {
    color: white;
}

.landing-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.landing-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
    color: white;
}

.landing-title-accent {
    color: var(--color-primary-light);
}

.landing-subtitle {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
}

.landing-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.landing-feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.landing-feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(4px);
}

.landing-feature-item i {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-light);
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
}

.landing-feature-item div {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.landing-feature-item strong {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: white;
}

.landing-feature-item span {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
}

/* Auth Page Container - Centered wrapper for login page */
.auth-page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    width: 100%;
}

.landing-login-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 480px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.landing-card-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.landing-card-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: var(--line-height-tight);
}

.landing-card-header p {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-normal);
}

.landing-google-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    min-height: 48px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.landing-google-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.landing-google-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.landing-card-footer {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.landing-card-footer p {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: 0;
}

/* Remove main-content padding when landing hero is present */
body.landing-page .main-content {
    padding: 0;
}

/* Remove footer margin-top when landing hero is present */
body.landing-page .footer {
    margin-top: 0;
}

/* Footer responsive adjustments */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-column:first-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-column:first-child {
        grid-column: 1;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .auth-page-container {
        padding: 0 var(--spacing-lg);
    }
    
    .landing-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .landing-login-card {
        margin-left: auto;
        margin-right: auto;
        max-width: 100%;
    }
    
    .landing-title {
        font-size: var(--font-size-4xl);
    }
    
    .landing-subtitle {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 640px) {
    .auth-page-container {
        padding: 0 var(--spacing-md);
    }
    
    .landing-hero {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }
    
    .landing-title {
        font-size: var(--font-size-3xl);
    }
    
    .landing-login-card {
        padding: var(--spacing-xl);
        border-radius: var(--radius-xl);
    }
    
    .landing-card-header {
        margin-bottom: var(--spacing-lg);
    }
    
    .landing-card-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .landing-card-header p {
        font-size: var(--font-size-sm);
    }
}

/* Mobile - 375px and below */
@media (max-width: 375px) {
    .auth-page-container {
        padding: 0 var(--spacing-sm);
    }
    
    .landing-hero {
        padding: 0 var(--spacing-sm) var(--spacing-lg);
        min-height: calc(100vh - var(--header-height));
    }
    
    .landing-content {
        gap: var(--spacing-xl);
    }
    
    .landing-login-card {
        padding: var(--spacing-lg);
        max-width: 100%;
    }
    
    .landing-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-md);
    }
    
    .landing-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xl);
    }
    
    .landing-features {
        gap: var(--spacing-md);
    }
    
    .landing-feature-item {
        padding: var(--spacing-sm);
    }
    
    .landing-feature-item i {
        font-size: var(--font-size-xl);
    }
    
    .landing-feature-item strong {
        font-size: var(--font-size-sm);
    }
    
    .landing-feature-item span {
        font-size: var(--font-size-xs);
    }
    
    .landing-google-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
        min-height: 44px;
    }
    
    .landing-google-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .landing-card-footer {
        padding-top: var(--spacing-md);
    }
    
    .landing-card-footer p {
        font-size: var(--font-size-xs);
    }
}

/* ============================================
   Communities Page Styles
   ============================================ */

.communities-filters-section {
    margin-bottom: var(--spacing-xl);
}

.communities-filters-section .card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    box-shadow: none;
}

.communities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.community-discovery-card {
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    position: relative;
    background: white;
}

.community-discovery-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.community-discovery-card:hover .community-card-banner {
    opacity: 0.15;
}

.community-discovery-card:hover .community-icon-large {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.community-card-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    height: 120px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.community-card-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.05) 100%);
    opacity: 0.5;
}

.community-card-content {
    padding: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    position: relative;
}

.community-card-header {
    margin-top: calc(var(--spacing-xl) * -1);
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    z-index: 2;
}

.community-icon-large {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 4px solid white;
    flex-shrink: 0;
}

.community-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
}

.community-card-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
    min-height: 48px;
}

.community-card-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.member-stat,
.post-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
}

.member-stat i,
.post-stat i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
}

.community-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
}

.community-status-badge.joined {
    color: var(--color-success);
    background: var(--color-success-bg);
}

.community-status-badge.explore {
    color: var(--color-primary);
    background: var(--color-primary-bg);
}

.community-discovery-card:hover .community-status-badge.explore {
    background: var(--color-primary);
    color: white;
    transform: translateX(4px);
}

/* Responsive Communities Grid */
@media (max-width: 968px) {
    .communities-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .community-icon-large {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-2xl);
    }
}

@media (max-width: 640px) {
    .communities-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-card-content {
        padding: var(--spacing-lg);
        padding-top: var(--spacing-md);
    }
    
    .community-card-banner {
        height: 100px;
    }
    
    .community-card-title {
        font-size: var(--font-size-lg);
    }
    
    .community-card-description {
        font-size: var(--font-size-sm);
        min-height: 44px;
    }
    
    .community-icon-large {
        width: 56px;
        height: 56px;
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 375px) {
    .communities-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .communities-filters-section {
        margin-bottom: var(--spacing-lg);
    }
    
    .communities-filters-section .card {
        padding: var(--spacing-md);
    }
    
    .filter-pill {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .filter-pill i {
        font-size: var(--font-size-xs);
    }
    
    .search-box-modern {
        width: 100%;
    }
    
    .community-card-content {
        padding: var(--spacing-md);
        padding-top: var(--spacing-sm);
    }
    
    .community-card-banner {
        height: 80px;
    }
    
    .community-card-header {
        margin-top: calc(var(--spacing-md) * -1);
    }
    
    .community-icon-large {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
        border-width: 3px;
    }
    
    .community-card-title {
        font-size: var(--font-size-base);
    }
    
    .community-card-description {
        font-size: var(--font-size-xs);
        -webkit-line-clamp: 3;
        min-height: auto;
    }
    
    .community-card-footer {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        padding-top: var(--spacing-md);
    }
    
    .member-stat,
    .post-stat {
        font-size: var(--font-size-xs);
    }
    
    .community-status-badge {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }
}

/* ============================================
   Announcements Page Styles
   ============================================ */

.announcement-card {
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.announcement-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.announcement-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.announcement-card:hover::before {
    opacity: 1;
}

.announcement-card h3 {
    transition: color 0.2s ease;
}

.announcement-card:hover h3 {
    color: var(--color-primary);
}

/* ============================================
   Community Detail Page Styles
   ============================================ */

/* Community Header Modern */
.community-header-modern {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.community-header-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    pointer-events: none;
}

.community-header-content {
    padding: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.community-header-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.community-header-info {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.community-avatar-modern {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-xl);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.community-header-text {
    flex: 1;
    min-width: 0;
}

.community-header-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.community-header-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: white;
    word-wrap: break-word;
    overflow-wrap: break-word;
    margin: 0;
}

.community-privacy-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.community-course-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.community-course-link a {
    color: white;
    text-decoration: underline;
    transition: opacity var(--transition-fast);
}

.community-course-link a:hover {
    opacity: 0.8;
}

.community-header-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.community-stat-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.community-header-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.inline-form {
    display: inline-block;
}

.community-detail-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.community-detail-main {
    min-width: 0; /* Prevent grid overflow */
}

.community-detail-sidebar {
    min-width: 0; /* Prevent grid overflow */
}

/* Community New Post Card */
.community-new-post-card {
    background: var(--bg-primary);
    border: 2px dashed var(--color-gray-200);
    transition: all var(--transition-base);
}

.community-new-post-card:hover {
    border-color: var(--color-primary-light);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md);
}

.community-new-post-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
}

.community-new-post-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.community-new-post-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.community-new-post-input {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 0;
}

.community-new-post-input:hover {
    background: var(--color-gray-50);
    border-color: var(--color-primary-light);
    color: var(--text-primary);
}

.community-new-post-input i {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
}

.feed-header {
    margin-bottom: var(--spacing-lg);
}

.feed-sort-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: color var(--transition-fast);
}

.feed-sort-btn:hover {
    color: var(--color-primary);
}

.feed-sort-btn-active {
    color: var(--color-primary);
}

.community-post-list {
    min-width: 0; /* Prevent overflow */
}

/* Community Post Card */
.community-post-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    overflow: hidden;
}

.community-post-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.community-post-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
}

.community-post-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.community-post-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.community-post-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.community-post-author-info {
    flex: 1;
    min-width: 0;
}

.community-post-author-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.community-post-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.community-post-pinned {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.community-post-body {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.community-post-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.community-post-content {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.community-post-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    background: var(--bg-secondary);
}

.community-post-stats {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.community-post-stat {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.community-post-action {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    transition: transform var(--transition-fast);
}

.community-post-card:hover .community-post-action {
    transform: translateX(4px);
}

/* Community Sidebar Cards */
.community-sidebar-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.community-sidebar-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.community-sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
}

.community-sidebar-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.community-sidebar-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.community-sidebar-content {
    padding: var(--spacing-lg);
}

.community-sidebar-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.community-sidebar-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.community-sidebar-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.community-sidebar-stat:hover {
    background: var(--color-gray-50);
    transform: translateY(-2px);
}

.community-sidebar-stat-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-base);
    flex-shrink: 0;
}

.community-sidebar-stat-info {
    flex: 1;
    min-width: 0;
}

.community-sidebar-stat-value {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.community-sidebar-stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.community-sidebar-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.community-rules-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.community-rule-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.community-rule-item:hover {
    background: var(--color-gray-50);
    transform: translateX(4px);
}

.community-rule-item:last-child {
    margin-bottom: 0;
}

.community-rule-number {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.community-rule-text {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Responsive Community Detail */
@media (max-width: 968px) {
    .community-detail-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-detail-sidebar {
        order: -1; /* Sidebar appears first on mobile */
    }
    
    .community-header-content {
        padding: var(--spacing-xl);
    }
    
    .community-header-title {
        font-size: var(--font-size-3xl);
    }
    
    .community-header-main {
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .community-header-content {
        padding: var(--spacing-lg);
    }
    
    .community-header-title {
        font-size: var(--font-size-2xl);
    }
    
    .community-avatar-modern {
        width: 80px;
        height: 80px;
        font-size: var(--font-size-3xl);
    }
    
    .community-header-actions {
        width: 100%;
    }
    
    .community-header-actions .btn {
        flex: 1;
        justify-content: center;
    }
    
    .feed-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .community-sidebar-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 375px) {
    .community-header-content {
        padding: var(--spacing-md);
    }
    
    .community-header-title {
        font-size: var(--font-size-xl);
    }
    
    .community-course-link {
        font-size: var(--font-size-xs);
    }
    
    .community-avatar-modern {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-2xl);
    }
    
    .community-detail-layout {
        gap: var(--spacing-md);
    }
    
    .community-post-title {
        font-size: var(--font-size-base);
    }
    
    .community-post-content {
        font-size: var(--font-size-xs);
    }
    
    .community-sidebar-title {
        font-size: var(--font-size-sm);
    }
    
    .community-sidebar-description {
        font-size: var(--font-size-xs);
    }
}

/* ============================================
   Community Create Post Page Styles
   ============================================ */

.create-post-page-header {
    margin-bottom: var(--spacing-xl);
}

.create-post-back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.create-post-back-link:hover {
    color: var(--color-primary);
}

.create-post-back-link i {
    font-size: var(--font-size-lg);
}

.create-post-header-text {
    margin-top: var(--spacing-xs);
}

.create-post-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.create-post-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.create-post-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--spacing-xl);
    align-items: start;
}

.create-post-main {
    min-width: 0;
}

.create-post-form-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.create-post-form-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.create-post-form-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.create-post-form-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.create-post-form-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.create-post-form-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.create-post-form {
    padding: var(--spacing-xl);
}

.create-post-field {
    margin-bottom: var(--spacing-xl);
}

.create-post-field:last-of-type {
    margin-bottom: var(--spacing-lg);
}

.create-post-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.create-post-required {
    color: var(--color-error);
}

.create-post-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.create-post-input::placeholder {
    color: var(--color-gray-400);
}

.create-post-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.create-post-textarea {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    resize: vertical;
    min-height: 280px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.create-post-textarea::placeholder {
    color: var(--color-gray-400);
}

.create-post-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.create-post-markdown-hint {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.create-post-markdown-hint i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
}

.create-post-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-100);
}

.create-post-sidebar {
    min-width: 0;
}

.create-post-sticky {
    position: sticky;
    top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.create-post-tips-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.create-post-tips-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.create-post-tips-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.create-post-tips-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.create-post-tips-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.create-post-tips-list {
    list-style: none;
    padding: var(--spacing-lg);
    margin: 0;
}

.create-post-tips-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

.create-post-tips-list li:not(:last-child) {
    border-bottom: 1px solid var(--color-gray-100);
}

.create-post-tips-list li i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
    flex-shrink: 0;
    margin-top: 2px;
}

.create-post-format-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.create-post-format-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.create-post-format-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.create-post-format-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.create-post-format-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.create-post-format-list {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.create-post-format-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) 0;
}

.create-post-format-item code {
    font-family: ui-monospace, monospace;
    font-size: 0.9em;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.create-post-format-preview {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.create-post-format-bold {
    font-weight: var(--font-weight-bold);
}

.create-post-format-italic {
    font-style: italic;
}

.create-post-format-link {
    color: var(--color-primary);
}

.create-post-format-quote {
    border-left: 3px solid var(--color-gray-300);
    padding-left: var(--spacing-sm);
    color: var(--text-secondary);
}

.create-post-format-code {
    font-family: ui-monospace, monospace;
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* Responsive: Create Post */
@media (max-width: 968px) {
    .create-post-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .create-post-sidebar {
        order: -1;
    }

    .create-post-sticky {
        position: static;
    }
}

@media (max-width: 640px) {
    .create-post-title {
        font-size: var(--font-size-2xl);
    }

    .create-post-form-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .create-post-form {
        padding: var(--spacing-lg);
    }

    .create-post-actions {
        flex-direction: column;
        width: 100%;
    }

    .create-post-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Community Post Detail Page Styles
   ============================================ */

.post-breadcrumbs {
    margin-bottom: var(--spacing-xl);
}

.community-post-layout {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.community-post-main {
    min-width: 0; /* Prevent grid overflow */
}

.community-post-sidebar {
    min-width: 0; /* Prevent grid overflow */
}

.post-meta-header {
    margin-bottom: var(--spacing-lg);
}

.post-author-name {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.post-meta {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.post-title {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.post-body-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

.post-body-content p {
    margin-bottom: var(--spacing-md);
}

.post-body-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.post-body-content a:hover {
    color: var(--color-primary-dark);
}

.post-body-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.post-actions {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
}

.post-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.replies-section {
    margin-top: var(--spacing-xl);
}

.replies-header {
    margin-bottom: var(--spacing-lg);
}

.replies-sort-active {
    cursor: pointer;
}

.comment-form-card {
    margin-bottom: var(--spacing-xl);
}

.comment-form {
    width: 100%;
}

.comment-textarea {
    resize: vertical;
    min-height: 100px;
}

.comment-list {
    min-width: 0; /* Prevent overflow */
}

.comment-item {
    margin-bottom: var(--spacing-md);
}

.comment-header {
    margin-bottom: var(--spacing-sm);
}

.comment-author {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.comment-date {
    white-space: nowrap;
}

.comment-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
}

.comment-content p {
    margin-bottom: var(--spacing-sm);
}

.comment-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.comment-content a:hover {
    color: var(--color-primary-dark);
}

.comment-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: var(--spacing-sm) 0;
}

.comment-delete-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.comment-actions {
    margin-top: var(--spacing-md);
}

.comment-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nested-replies {
    margin-left: var(--spacing-xl);
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    border-left: 2px solid var(--color-gray-50);
}

.post-sidebar-title {
    margin-bottom: var(--spacing-lg);
}

/* Responsive Community Post Layout */
@media (max-width: 968px) {
    .community-post-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-post-sidebar {
        order: -1; /* Sidebar appears first on mobile */
    }
    
    .post-title {
        font-size: var(--font-size-2xl);
    }
    
    .post-body-content {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 640px) {
    .post-title {
        font-size: var(--font-size-xl);
    }
    
    .post-body-content {
        font-size: var(--font-size-sm);
    }
    
    .comment-textarea {
        min-height: 80px;
    }
    
    .nested-replies {
        margin-left: var(--spacing-md);
        padding-left: var(--spacing-md);
    }
}

@media (max-width: 375px) {
    .post-breadcrumbs {
        margin-bottom: var(--spacing-lg);
        font-size: var(--font-size-xs);
    }
    
    .community-post-layout {
        gap: var(--spacing-md);
    }
    
    .post-detail-card {
        padding: var(--spacing-lg);
    }
    
    .post-title {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-md);
    }
    
    .post-body-content {
        font-size: var(--font-size-sm);
        line-height: var(--line-height-normal);
    }
    
    .post-meta-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .post-actions {
        gap: var(--spacing-md);
    }
    
    .replies-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .comment-form-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .comment-textarea {
        min-height: 70px;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .comment-form .btn {
        width: 100%;
    }
    
    .comment-item {
        margin-bottom: var(--spacing-sm);
    }
    
    .reply-block {
        padding: var(--spacing-md);
    }
    
    .comment-content {
        font-size: var(--font-size-xs);
    }
    
    .comment-actions {
        gap: var(--spacing-sm);
    }
    
    .nested-replies {
        margin-left: var(--spacing-sm);
        padding-left: var(--spacing-sm);
    }
    
    .nested-replies .reply-block {
        padding: var(--spacing-sm);
    }
}

/* ============================================
   Notifications Page Styles
   ============================================ */

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state-action {
    margin-top: var(--spacing-md);
}

/* Notification Error Message (CSS-only toast) */
.notification-error-message {
    margin-bottom: var(--spacing-lg);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.notification-error-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-error-bg);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-lg);
    color: var(--color-error);
    flex-wrap: wrap;
}

.notification-error-content i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.notification-error-text {
    flex: 1;
    font-weight: var(--font-weight-medium);
    min-width: 0;
}

.notification-error-close {
    background: none;
    border: none;
    color: var(--color-error);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
    flex-shrink: 0;
}

.notification-error-close:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* Notification List */
.notification-list {
    min-width: 0;
}

.notification-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    min-width: 0;
    position: relative;
    overflow: hidden;
}

.notification-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.notification-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.02) 0%, rgba(99, 102, 241, 0.01) 100%);
}

.notification-item:hover::before {
    opacity: 1;
}

.notification-unread {
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.notification-read {
    opacity: 0.75;
}

.notification-item-content {
    min-width: 0;
}

.notification-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.notification-icon-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.notification-icon-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.notification-icon-error {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.notification-icon-info {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.notification-content {
    min-width: 0;
}

.notification-header {
    margin-bottom: var(--spacing-xs);
}

.notification-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.notification-title-unread {
    color: var(--color-gray-900);
}

.notification-title-read {
    color: var(--color-gray-700);
}

.notification-timestamp {
    white-space: nowrap;
    flex-shrink: 0;
}

.notification-message {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
    margin-bottom: var(--spacing-md);
}

.notification-actions {
    margin-top: var(--spacing-sm);
}

.min-width-0 {
    min-width: 0;
}

/* Responsive Notifications */
@media (max-width: 640px) {
    .notification-item-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .notification-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .notification-title {
        font-size: var(--font-size-sm);
    }
    
    .notification-message {
        font-size: var(--font-size-xs);
    }
    
    .notification-actions {
        width: 100%;
    }
    
    .notification-actions .btn {
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 375px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .page-header-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .page-header-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-error-content {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-sm);
    }
    
    .notification-error-text {
        width: 100%;
    }
    
    .notification-error-content .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-item {
        padding: var(--spacing-md);
    }
    
    .notification-icon {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }
    
    .notification-title {
        font-size: var(--font-size-sm);
    }
    
    .notification-message {
        font-size: var(--font-size-xs);
        margin-bottom: var(--spacing-sm);
    }
    
    .notification-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .notification-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-timestamp {
        font-size: var(--font-size-2xs);
    }
}

/* ============================================
   Status Pills
   ============================================ */

.status-pill {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: capitalize;
    white-space: nowrap;
}

.status-pill-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.status-pill-info {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.status-pill-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.status-pill-error {
    background: var(--color-error-bg);
    color: var(--color-error);
}

/* ============================================
   Assignments Page Styles
   ============================================ */

/* Assignment Layout - Better space utilization */
.assignment-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 100%;
}

.assignment-main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    min-width: 0;
}

.assignment-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    min-width: 0;
}

@media (min-width: 1400px) {
    .assignment-layout {
        grid-template-columns: 1fr 360px;
    }
}

@media (max-width: 1024px) {
    .assignment-layout {
        grid-template-columns: 1fr;
    }
    
    .assignment-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .assignment-sidebar {
        grid-template-columns: 1fr;
    }
}

.assignment-list {
    min-width: 0;
}

.assignment-item {
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.assignment-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-primary);
}

.assignment-item-content {
    min-width: 0;
}

.assignment-content {
    min-width: 0;
    flex: 1;
}

.assignment-title-section {
    min-width: 0;
}

.assignment-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.assignment-course {
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.assignment-header {
    margin-bottom: var(--spacing-xs);
}

.assignment-meta {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.assignment-due-date,
.assignment-submitted,
.assignment-grade {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.assignment-due-date i,
.assignment-submitted i {
    font-size: var(--font-size-sm);
}

.assignment-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-sm);
}

/* Responsive Assignments */
@media (max-width: 640px) {
    .assignment-item-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .assignment-actions {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .assignment-title {
        font-size: var(--font-size-sm);
    }
    
    .assignment-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 375px) {
    .assignment-item {
        padding: var(--spacing-md);
    }
    
    .assignment-title {
        font-size: var(--font-size-sm);
    }
    
    .assignment-course {
        font-size: var(--font-size-xs);
    }
    
    .assignment-meta {
        font-size: var(--font-size-xs);
    }
    
    .assignment-due-date,
    .assignment-submitted,
    .assignment-grade {
        font-size: var(--font-size-xs);
    }
    
    .assignment-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    
    .assignment-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .status-pill {
        font-size: var(--font-size-2xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   Quizzes Page Styles
   ============================================ */

.quiz-list {
    min-width: 0;
}

.quiz-item {
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.quiz-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-primary);
}

.quiz-item-content {
    min-width: 0;
}

.quiz-content {
    min-width: 0;
    flex: 1;
}

.quiz-title-section {
    min-width: 0;
}

.quiz-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.quiz-course {
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quiz-header {
    margin-bottom: var(--spacing-xs);
}

.quiz-meta {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.quiz-completed,
.quiz-time,
.quiz-score {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.quiz-completed i,
.quiz-time i {
    font-size: var(--font-size-sm);
}

.quiz-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-sm);
}

/* Responsive Quizzes */
@media (max-width: 640px) {
    .quiz-item-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .quiz-actions {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .quiz-title {
        font-size: var(--font-size-sm);
    }
    
    .quiz-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 375px) {
    .quiz-item {
        padding: var(--spacing-md);
    }
    
    .quiz-title {
        font-size: var(--font-size-sm);
    }
    
    .quiz-course {
        font-size: var(--font-size-xs);
    }
    
    .quiz-meta {
        font-size: var(--font-size-xs);
    }
    
    .quiz-completed,
    .quiz-time,
    .quiz-score {
        font-size: var(--font-size-xs);
    }
    
    .quiz-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    
    .quiz-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .status-pill {
        font-size: var(--font-size-2xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   Certificates Page Styles
   ============================================ */

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    min-width: 0;
}

.certificate-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    position: relative;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.certificate-card:hover::before {
    opacity: 1;
}

.certificate-card-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
    padding: var(--spacing-xl);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.certificate-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 4px solid white;
}

.certificate-card:hover .certificate-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.certificate-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.certificate-card-body {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.certificate-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-md) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    min-height: 2.5em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.certificate-meta {
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.certificate-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.certificate-date i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.certificate-card-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
}

.certificate-card-footer .btn {
    flex: 1;
    justify-content: center;
}

/* Responsive Certificates */
@media (max-width: 968px) {
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .certificate-card {
        padding: var(--spacing-md);
    }
    
    .certificate-title {
        font-size: var(--font-size-sm);
        min-height: 2em;
    }
    
    .certificate-date {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 375px) {
    .certificate-card {
        padding: var(--spacing-md);
    }
    
    .certificate-icon {
        width: 56px;
        height: 56px;
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .certificate-title {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .certificate-meta {
        margin-bottom: var(--spacing-sm);
    }
    
    .certificate-date {
        font-size: var(--font-size-xs);
    }
    
    .certificate-actions {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
/* ============================================
   BADGES GRID & CARDS
   ============================================ */

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    min-width: 0;
}

.badge-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    position: relative;
    background: white;
}

.badge-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.badge-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.badge-card:hover::before {
    opacity: 1;
}

.badge-card-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(99, 102, 241, 0.03) 100%);
    padding: var(--spacing-xl);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 160px;
}

.badge-icon-large {
    width: 96px;
    height: 96px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-5xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 4px solid white;
    position: relative;
}

.badge-card:hover .badge-icon-large {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.badge-verified-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

.badge-card-body {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.badge-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
}

.badge-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
    flex-grow: 1;
}

.badge-card-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
    display: flex;
    justify-content: center;
    align-items: center;
}

.badge-earned-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.badge-earned-date i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.badge-count-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.badge-count-badge i {
    font-size: var(--font-size-base);
}

/* Responsive Badges */
@media (max-width: 968px) {
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .badges-grid {
        grid-template-columns: 1fr;
    }
    
    .badge-card-header {
        min-height: 140px;
        padding: var(--spacing-lg);
    }
    
    .badge-icon-large {
        width: 80px;
        height: 80px;
        font-size: var(--font-size-4xl);
    }
    
    .badge-name {
        font-size: var(--font-size-base);
    }
    
    .badge-description {
        font-size: var(--font-size-xs);
    }
    
    .badge-earned-date {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 375px) {
    .badge-card-header {
        min-height: 120px;
        padding: var(--spacing-md);
    }
    
    .badge-icon-large {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-3xl);
    }
    
    .badge-card-body {
        padding: var(--spacing-md);
    }
    
    .badge-name {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .badge-description {
        font-size: var(--font-size-xs);
    }
    
    .badge-card-footer {
        padding: var(--spacing-md);
    }
    
    .badge-earned-date {
        font-size: var(--font-size-xs);
    }
}

    
    .certificate-actions .btn {
        width: 100%;
    }
}

/* ============================================
   Wishlist/Notes/Bookmarks Common Styles
   ============================================ */

/* Course Card Clickable */
.course-card-clickable {
    cursor: pointer;
}

.course-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

/* Note Item Styles */
.note-item {
    min-width: 0;
}

.note-item-header {
    margin-bottom: var(--spacing-md);
}

.note-item-content {
    min-width: 0;
}

.note-course {
    margin-bottom: var(--spacing-xs);
}

.note-course-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}

.note-course-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.note-lesson {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.note-content {
    white-space: pre-wrap;
    color: var(--color-gray-900);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.note-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-md);
}

/* Bookmark Item Styles */
.bookmark-item {
    min-width: 0;
}

.bookmark-item-header {
    margin-bottom: var(--spacing-md);
}

.bookmark-item-content {
    min-width: 0;
}

.bookmark-course {
    margin-bottom: var(--spacing-xs);
}

.bookmark-course-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}

.bookmark-course-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.bookmark-lesson {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.bookmark-position {
    margin-top: var(--spacing-sm);
}

.bookmark-note {
    color: var(--color-gray-700);
    margin-top: var(--spacing-md);
    font-style: italic;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.bookmark-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-md);
}

/* Responsive Wishlist/Notes/Bookmarks */
@media (max-width: 640px) {
    .note-item-header,
    .bookmark-item-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .note-item-header .btn,
    .bookmark-item-header .btn {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
}

@media (max-width: 375px) {
    .note-item,
    .bookmark-item {
        padding: var(--spacing-md);
    }
    
    .note-course-link,
    .bookmark-course-link {
        font-size: var(--font-size-sm);
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .note-lesson,
    .bookmark-lesson {
        font-size: var(--font-size-xs);
    }
    
    .note-content,
    .bookmark-note {
        font-size: var(--font-size-sm);
    }
    
    .note-meta,
    .bookmark-meta {
        font-size: var(--font-size-2xs);
    }
    
    .note-item-header .btn,
    .bookmark-item-header .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Instructor Dashboard – Quick Links (top)
   ============================================ */

.instructor-quick-links {
    width: 100%;
}

.instructor-quick-links-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.instructor-quick-link-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: inherit;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.instructor-quick-link-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.instructor-quick-link-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.instructor-quick-link-icon-revenue {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(217, 119, 6, 0.15));
    color: #d97706;
}

.instructor-quick-link-icon-analytics {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(37, 99, 235, 0.15));
    color: #2563eb;
}

.instructor-quick-link-icon-community {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(22, 163, 74, 0.15));
    color: #16a34a;
}

.instructor-quick-link-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.instructor-quick-link-label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.instructor-quick-link-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.instructor-quick-link-arrow {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    flex-shrink: 0;
    opacity: 0.8;
    transition: transform var(--transition-fast);
}

.instructor-quick-link-card:hover .instructor-quick-link-arrow {
    transform: translateX(4px);
    opacity: 1;
}

.instructor-dashboard-main {
    width: 100%;
}

@media (max-width: 968px) {
    .instructor-quick-links-inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .instructor-quick-link-card {
        padding: var(--spacing-lg);
    }

    .instructor-quick-link-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }
}

/* ============================================
   Instructor Analytics Overview Page
   ============================================ */

.analytics-overview-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.analytics-overview-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.analytics-overview-header-text {
    flex: 1;
    min-width: 0;
}

.analytics-overview-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.analytics-overview-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.analytics-overview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.analytics-stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.analytics-stat-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.analytics-stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.analytics-stat-icon-courses {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.analytics-stat-icon-students {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: #16a34a;
}

.analytics-stat-icon-revenue {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    color: #d97706;
}

.analytics-stat-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.analytics-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.analytics-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.analytics-by-course-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.analytics-by-course-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.analytics-by-course-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.analytics-by-course-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.analytics-by-course-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.analytics-by-course-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.analytics-by-course-body {
    padding: var(--spacing-xl);
}

.analytics-course-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.analytics-course-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.analytics-course-item:hover {
    border-color: var(--color-primary-light);
    background: var(--color-gray-50);
    box-shadow: var(--shadow-sm);
}

.analytics-course-info {
    flex: 1;
    min-width: 0;
}

.analytics-course-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    line-height: 1.3;
}

.analytics-course-meta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.analytics-course-meta i {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.analytics-course-action {
    flex-shrink: 0;
}

.analytics-empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
}

.analytics-empty-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-lg);
}

.analytics-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm);
}

.analytics-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl);
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 968px) {
    .analytics-overview-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .analytics-overview-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .analytics-overview-title {
        font-size: var(--font-size-2xl);
    }

    .analytics-course-item {
        flex-direction: column;
        align-items: stretch;
        text-align: left;
    }

    .analytics-course-action {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Instructor My Courses Page
   ============================================ */

.instructor-courses-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.instructor-courses-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.instructor-courses-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.instructor-courses-header-text {
    flex: 1;
    min-width: 0;
}

.instructor-courses-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.instructor-courses-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.instructor-courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.instructor-course-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.instructor-course-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.instructor-course-thumbnail-wrap {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.instructor-course-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-course-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-4xl);
}

.instructor-course-status {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.instructor-course-status-published {
    background: rgba(34, 197, 94, 0.95);
    color: white;
}

.instructor-course-status-draft {
    background: rgba(245, 158, 11, 0.95);
    color: white;
}

.instructor-course-body {
    padding: var(--spacing-xl);
}

.instructor-course-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.instructor-course-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0 0 var(--spacing-md) 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.instructor-course-meta {
    margin-bottom: var(--spacing-lg);
}

.instructor-course-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.instructor-course-meta-item i {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.instructor-course-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.instructor-course-actions-primary {
    display: flex;
    gap: var(--spacing-sm);
}

.instructor-course-actions-primary .btn {
    flex: 1;
}

.instructor-course-actions-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.instructor-course-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.instructor-course-link:hover {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.instructor-course-link i {
    font-size: var(--font-size-base);
}

.instructor-courses-empty {
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
}

.instructor-courses-empty-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-xl);
}

.instructor-courses-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm);
}

.instructor-courses-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 640px) {
    .instructor-courses-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .instructor-courses-header-content {
        flex-direction: column;
    }

    .instructor-courses-title {
        font-size: var(--font-size-2xl);
    }

    .instructor-courses-grid {
        grid-template-columns: 1fr;
    }

    .instructor-course-actions-primary {
        flex-direction: column;
    }

    .instructor-course-actions-primary .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Course Edit Page (Instructor)
   ============================================ */

.course-edit-header {
    margin-bottom: var(--spacing-xl);
}

.course-edit-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.course-edit-back:hover {
    color: var(--color-primary);
}

.course-edit-back i {
    font-size: var(--font-size-lg);
}

.course-edit-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.course-edit-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.course-edit-header-text {
    flex: 1;
    min-width: 0;
}

.course-edit-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.course-edit-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
}

.course-edit-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.course-edit-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.course-edit-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.course-edit-card-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.course-edit-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.course-edit-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.course-edit-form {
    padding: var(--spacing-xl);
}

.course-edit-field {
    margin-bottom: var(--spacing-xl);
}

.course-edit-field-half {
    margin-bottom: 0;
}

.course-edit-price-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.course-edit-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.course-edit-required {
    color: var(--color-error);
}

.course-edit-input,
.course-edit-select,
.course-edit-textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.course-edit-input:focus,
.course-edit-select:focus,
.course-edit-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.course-edit-textarea {
    min-height: 120px;
    resize: vertical;
}

.course-edit-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.course-edit-file-wrap {
    margin-bottom: var(--spacing-sm);
}

.course-edit-file {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.course-edit-thumbnail-preview {
    margin-top: var(--spacing-md);
}

.course-edit-thumbnail-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.course-edit-thumbnail-img {
    max-width: 200px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.course-edit-hint {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin: var(--spacing-sm) 0 0 0;
}

.course-edit-field-checkbox {
    margin-bottom: var(--spacing-lg);
}

.course-edit-checkbox {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.course-edit-checkbox input {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--color-primary);
}

.course-edit-checkbox-text {
    user-select: none;
}

.course-edit-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    margin-top: var(--spacing-lg);
}

@media (max-width: 640px) {
    .course-edit-header-content {
        flex-direction: column;
    }

    .course-edit-title {
        font-size: var(--font-size-2xl);
    }

    .course-edit-price-row {
        grid-template-columns: 1fr;
    }

    .course-edit-actions {
        flex-direction: column;
    }

    .course-edit-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Support Form / Contact Support Page Styles
   ============================================ */

.support-page-header {
    margin-bottom: var(--spacing-xl);
}

.support-page-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.support-page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.support-form-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.support-form-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.support-form-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.support-form-card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.support-form-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.support-form-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.support-form-body {
    padding: var(--spacing-xl);
    max-width: 100%;
}

.support-field {
    margin-bottom: var(--spacing-xl);
}

.support-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.support-required {
    color: var(--color-error);
}

.support-input,
.support-select,
.support-textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.support-input::placeholder,
.support-textarea::placeholder {
    color: var(--color-gray-400);
}

.support-input:focus,
.support-select:focus,
.support-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.support-textarea {
    min-height: 180px;
    resize: vertical;
}

.support-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.support-form-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-100);
    flex-wrap: wrap;
}

.support-form-result {
    margin-top: var(--spacing-xl);
    padding: 0 var(--spacing-xl) var(--spacing-xl);
    display: none;
}

.support-form-result.visible {
    display: block;
}

.support-form-loading {
    color: var(--text-secondary);
    margin: 0;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.support-form-success {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: rgba(34, 197, 94, 0.12);
    color: var(--color-success);
    border-radius: var(--radius-md);
    margin: 0;
    font-weight: var(--font-weight-medium);
}

.support-form-success i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    margin-top: 2px;
}

.support-form-error {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-error);
    border-radius: var(--radius-md);
    margin: 0;
    font-weight: var(--font-weight-medium);
}

.support-form-error i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Responsive Support Form */
@media (max-width: 640px) {
    .support-page-title {
        font-size: var(--font-size-2xl);
    }

    .support-form-card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .support-form-body {
        padding: var(--spacing-lg);
    }

    .support-form-actions {
        flex-direction: column;
        padding-top: var(--spacing-lg);
    }

    .support-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 375px) {
    .support-form-body {
        padding: var(--spacing-md);
    }

    .support-form-card-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
    }
}

/* ============================================
   Assignments List Page
   ============================================ */

.assignments-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.assignments-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.assignments-breadcrumb a:hover {
    color: var(--color-primary);
}

.assignments-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.assignments-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.assignments-list-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.assignments-list-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.assignments-list-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.assignments-list-header-text {
    flex: 1;
    min-width: 0;
}

.assignments-list-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.assignments-list-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.assignments-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.assignment-list-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.assignment-list-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.assignment-list-card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    flex-wrap: wrap;
}

.assignment-list-card-main {
    flex: 1;
    min-width: 0;
}

.assignment-list-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.assignment-list-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.assignment-list-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.assignment-list-meta-item i {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.assignment-list-meta-muted {
    color: var(--color-gray-400);
}

.assignment-list-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.assignment-list-badge-published {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.assignment-list-badge-draft {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.assignment-list-badge-overdue {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.assignment-list-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.assignment-list-card-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.assignments-empty {
    background: var(--bg-primary);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    margin: 0;
}

.assignments-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.assignments-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.assignments-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .assignments-list-header {
        flex-direction: column;
        align-items: stretch;
    }

    .assignments-list-header-content {
        flex-direction: column;
    }

    .assignments-list-title {
        font-size: var(--font-size-2xl);
    }

    .assignment-list-card-body {
        flex-direction: column;
        align-items: stretch;
    }

    .assignment-list-card-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

/* ============================================
   Assignment Statistics Page
   ============================================ */

.assignment-stat-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.assignment-stat-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.assignment-stat-breadcrumb a:hover {
    color: var(--color-primary);
}

.assignment-stat-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.assignment-stat-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.assignment-stat-header {
    margin-bottom: var(--spacing-xl);
}

.assignment-stat-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.assignment-stat-back:hover {
    color: var(--color-primary);
}

.assignment-stat-back i {
    font-size: var(--font-size-lg);
}

.assignment-stat-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.assignment-stat-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.assignment-stat-header-text {
    flex: 1;
    min-width: 0;
}

.assignment-stat-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.assignment-stat-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.assignment-stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.assignment-stat-icon-total {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.assignment-stat-icon-graded {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.assignment-stat-icon-pending {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    color: var(--color-warning);
}

.assignment-stat-icon-average {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.assignment-submissions-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.assignment-submissions-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.assignment-submissions-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.assignment-submissions-header-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.assignment-submissions-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.assignment-submissions-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.assignment-submissions-body {
    padding: var(--spacing-xl);
}

.assignment-submissions-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.assignment-submissions-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.assignment-submissions-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-gray-200);
    white-space: nowrap;
}

.assignment-submissions-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.assignment-submissions-table tbody tr:hover {
    background: var(--color-gray-50);
}

.assignment-submissions-cell-student {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.assignment-submissions-cell-file {
    color: var(--text-secondary);
}

.assignment-submissions-cell-date {
    color: var(--text-secondary);
}

.assignment-submissions-cell-grade {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.assignment-submissions-muted {
    color: var(--color-gray-400);
}

.assignment-stat-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.assignment-stat-badge-graded {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.assignment-stat-badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.assignment-submissions-empty {
    text-align: center;
    padding: var(--spacing-3xl);
}

.assignment-submissions-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.assignment-submissions-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.assignment-submissions-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1024px) {
    .assignment-stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .assignment-stat-header-content {
        flex-direction: column;
    }

    .assignment-stat-title {
        font-size: var(--font-size-2xl);
    }

    .assignment-stat-cards {
        grid-template-columns: 1fr;
    }

    .assignment-submissions-header {
        flex-direction: column;
    }

    .assignment-submissions-body {
        padding: var(--spacing-lg);
    }

    .assignment-submissions-table th,
    .assignment-submissions-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ============================================
   Grade Submissions (Grading) Page
   ============================================ */

.grading-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.grading-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.grading-breadcrumb a:hover {
    color: var(--color-primary);
}

.grading-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.grading-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.grading-header {
    margin-bottom: var(--spacing-xl);
}

.grading-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.grading-back:hover {
    color: var(--color-primary);
}

.grading-back i {
    font-size: var(--font-size-lg);
}

.grading-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.grading-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.grading-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.grading-header-text {
    flex: 1;
    min-width: 0;
}

.grading-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.grading-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.grading-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.grading-submission-count {
    text-align: right;
}

.grading-submission-count-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.grading-submission-count-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.grading-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.grading-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.grading-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.grading-card-graded {
    border-left: 4px solid var(--color-success);
}

.grading-card-pending {
    border-left: 4px solid var(--color-primary);
}

.grading-card-inner {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    flex-wrap: wrap;
}

.grading-card-left {
    width: 280px;
    min-width: 0;
    padding-right: var(--spacing-xl);
    border-right: 1px solid var(--color-gray-100);
}

.grading-student {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.grading-student-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-gray-200), var(--color-gray-300));
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.grading-student-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.grading-student-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.grading-student-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.grading-file-box {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.grading-file-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.grading-file-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.grading-file-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.grading-file-download {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.grading-file-download:hover {
    color: var(--color-primary-dark);
}

.grading-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.grading-status-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.grading-status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.grading-status-badge-graded {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.grading-status-badge-pending {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
}

.grading-card-right {
    flex: 1;
    min-width: 280px;
}

.grading-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.grading-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.grading-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.grading-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.grading-grade-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.grading-input-grade {
    width: 100%;
    max-width: 140px;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.grading-input-grade:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.grading-grade-max {
    margin-left: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
}

.grading-quick-tokens {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.grading-textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    resize: vertical;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.grading-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.grading-textarea::placeholder {
    color: var(--color-gray-400);
}

.grading-form-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    padding-top: var(--spacing-sm);
}

.grading-last-updated {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.grading-empty {
    background: var(--bg-primary);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    margin: 0;
}

.grading-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.grading-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.grading-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .grading-header-row {
        flex-direction: column;
        align-items: stretch;
    }

    .grading-header-content {
        flex-direction: column;
    }

    .grading-title {
        font-size: var(--font-size-2xl);
    }

    .grading-card-inner {
        flex-direction: column;
        padding: var(--spacing-lg);
    }

    .grading-card-left {
        width: 100%;
        padding-right: 0;
        padding-bottom: var(--spacing-lg);
        border-right: none;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .grading-form-row {
        grid-template-columns: 1fr;
    }

    .grading-form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .grading-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Quizzes List Page
   ============================================ */

.quizzes-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.quizzes-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.quizzes-breadcrumb a:hover {
    color: var(--color-primary);
}

.quizzes-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.quizzes-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.quizzes-list-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.quizzes-list-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.quizzes-list-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.quizzes-list-header-text {
    flex: 1;
    min-width: 0;
}

.quizzes-list-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.quizzes-list-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.quizzes-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quiz-list-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.quiz-list-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.quiz-list-card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    flex-wrap: wrap;
}

.quiz-list-card-main {
    flex: 1;
    min-width: 0;
}

.quiz-list-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.quiz-list-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.quiz-list-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quiz-list-meta-item i {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.quiz-list-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.quiz-list-badge-published {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.quiz-list-badge-draft {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.quiz-list-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.quiz-list-card-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quizzes-empty {
    background: var(--bg-primary);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    margin: 0;
}

.quizzes-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.quizzes-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.quizzes-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .quizzes-list-header {
        flex-direction: column;
        align-items: stretch;
    }

    .quizzes-list-header-content {
        flex-direction: column;
    }

    .quizzes-list-title {
        font-size: var(--font-size-2xl);
    }

    .quiz-list-card-body {
        flex-direction: column;
        align-items: stretch;
    }

    .quiz-list-card-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

/* ============================================
   Quiz Statistics Page
   ============================================ */

.quiz-stat-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.quiz-stat-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.quiz-stat-breadcrumb a:hover {
    color: var(--color-primary);
}

.quiz-stat-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.quiz-stat-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.quiz-stat-header {
    margin-bottom: var(--spacing-xl);
}

.quiz-stat-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.quiz-stat-back:hover {
    color: var(--color-primary);
}

.quiz-stat-back i {
    font-size: var(--font-size-lg);
}

.quiz-stat-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.quiz-stat-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.quiz-stat-header-text {
    flex: 1;
    min-width: 0;
}

.quiz-stat-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.quiz-stat-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.quiz-stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.quiz-stat-icon-total {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.quiz-stat-icon-passed {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.quiz-stat-icon-failed {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.1));
    color: var(--color-error);
}

.quiz-stat-icon-average {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.quiz-stat-attempts-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.quiz-stat-attempts-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.quiz-stat-attempts-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.quiz-stat-attempts-header-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.quiz-stat-attempts-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.quiz-stat-attempts-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.quiz-stat-attempts-body {
    padding: var(--spacing-xl);
}

.quiz-stat-attempts-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.quiz-stat-attempts-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.quiz-stat-attempts-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-gray-200);
    white-space: nowrap;
}

.quiz-stat-attempts-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.quiz-stat-attempts-table tbody tr:hover {
    background: var(--color-gray-50);
}

.quiz-stat-attempts-cell-student {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.quiz-stat-attempts-cell-score {
    color: var(--text-secondary);
}

.quiz-stat-attempts-passed {
    color: var(--color-success);
    font-weight: var(--font-weight-semibold);
}

.quiz-stat-attempts-failed {
    color: var(--color-error);
    font-weight: var(--font-weight-semibold);
}

.quiz-stat-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.quiz-stat-badge-passed {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.quiz-stat-badge-failed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.quiz-stat-attempts-empty {
    text-align: center;
    padding: var(--spacing-3xl);
}

.quiz-stat-attempts-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.quiz-stat-attempts-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.quiz-stat-attempts-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1024px) {
    .quiz-stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .quiz-stat-header-content {
        flex-direction: column;
    }

    .quiz-stat-title {
        font-size: var(--font-size-2xl);
    }

    .quiz-stat-cards {
        grid-template-columns: 1fr;
    }

    .quiz-stat-attempts-header {
        flex-direction: column;
    }

    .quiz-stat-attempts-body {
        padding: var(--spacing-lg);
    }

    .quiz-stat-attempts-table th,
    .quiz-stat-attempts-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ============================================
   Edit Quiz – Questions section
   ============================================ */

.quiz-edit-questions-card .course-edit-card-header {
    border-bottom: 1px solid var(--color-gray-100);
    padding-bottom: var(--spacing-lg);
}

.quiz-edit-questions-body {
    padding: var(--spacing-xl);
}

.quiz-edit-question-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.quiz-edit-question-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    flex-wrap: wrap;
}

.quiz-edit-question-content {
    flex: 1;
    min-width: 0;
}

.quiz-edit-question-number {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.quiz-edit-question-text {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.4;
}

.quiz-edit-question-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.quiz-edit-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.quiz-edit-option-correct {
    color: var(--color-success);
    font-weight: var(--font-weight-semibold);
}

.quiz-edit-option-correct i {
    font-size: var(--font-size-base);
}

.quiz-edit-option-letter {
    display: inline-block;
    width: 1.5rem;
    font-weight: var(--font-weight-medium);
}

.quiz-edit-question-points {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.quiz-edit-question-points i {
    margin-right: var(--spacing-xs);
}

.quiz-edit-no-questions {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-2xl) 0;
}

.quiz-edit-add-section {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-xl);
}

.quiz-edit-add-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-lg) 0;
}

.quiz-edit-add-section .course-edit-form {
    padding: 0;
}

.quiz-edit-add-section .course-edit-actions {
    padding-top: var(--spacing-md);
    border-top: none;
}

@media (max-width: 768px) {
    .quiz-edit-question-item {
        flex-direction: column;
        align-items: stretch;
    }

    .quiz-edit-add-section .course-edit-price-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Admin Dashboard
   ============================================ */

.admin-dashboard-header {
    margin-bottom: var(--spacing-xl);
}

.admin-dashboard-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-error);
    margin-bottom: var(--spacing-md);
}

.admin-dashboard-header-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.admin-dashboard-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.admin-dashboard-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.admin-dashboard-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.admin-dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.admin-dashboard-stat .analytics-stat-content {
    position: relative;
    padding-right: var(--spacing-md);
}

.admin-dashboard-trend {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-xs);
}

.admin-dashboard-trend-up {
    color: var(--color-success);
}

.admin-dashboard-trend-stable {
    color: var(--text-secondary);
}

.admin-dashboard-stat-icon-revenue {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.admin-dashboard-stat-icon-enrollments {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.admin-dashboard-stat-icon-courses {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    color: var(--color-warning);
}

.admin-dashboard-stat-icon-users {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.admin-dashboard-tables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.admin-dashboard-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.admin-dashboard-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.admin-dashboard-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
    flex-wrap: wrap;
}

.admin-dashboard-card-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.admin-dashboard-card-header > div:not(.admin-dashboard-card-header-icon) {
    flex: 1;
    min-width: 0;
}

.admin-dashboard-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.admin-dashboard-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.admin-dashboard-card-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-decoration: none;
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.admin-dashboard-card-link:hover {
    color: var(--color-primary-dark);
}

.admin-dashboard-card-body {
    padding: var(--spacing-xl);
}

.admin-dashboard-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.admin-dashboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.admin-dashboard-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-gray-200);
}

.admin-dashboard-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.admin-dashboard-table tbody tr:hover {
    background: var(--color-gray-50);
}

.admin-dashboard-cell-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.admin-dashboard-cell-value {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.admin-dashboard-cell-muted {
    color: var(--text-secondary);
}

.admin-dashboard-cell-email {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.admin-dashboard-instructor {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.admin-dashboard-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.admin-dashboard-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.admin-dashboard-empty i {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.admin-dashboard-empty p {
    margin: 0;
    font-size: var(--font-size-sm);
}

.admin-dashboard-quick {
    background: linear-gradient(135deg, var(--color-gray-900), #1e1b4b);
    border: none;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.admin-dashboard-quick-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.admin-dashboard-quick-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.admin-dashboard-quick-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.6);
}

.admin-dashboard-quick-desc {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: white;
}

.admin-dashboard-quick-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-dashboard-quick-buttons .btn-primary {
    background: var(--color-primary);
    color: white;
}

.admin-dashboard-quick-buttons .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

.admin-dashboard-quick-buttons .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ============================================
   Admin User Management (Users List)
   ============================================ */

.admin-users-badge {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
}

/* User Management header (redesigned) */
.admin-users-header {
    margin-bottom: var(--spacing-xl);
}

.admin-users-header-top {
    margin-bottom: var(--spacing-md);
}

.admin-edit-user-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.admin-edit-user-back:hover {
    color: var(--color-primary);
}

.admin-edit-user-back i {
    font-size: var(--font-size-lg);
}

.admin-users-header-main {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.admin-users-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.admin-users-header-text {
    flex: 1;
    min-width: 0;
}

.admin-users-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.admin-users-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.admin-users-filters {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.admin-users-filters:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-primary-light);
}

.admin-users-filters-form {
    width: 100%;
}

.admin-users-filters-form {
    width: 100%;
}

.admin-users-filters-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-md);
}

.admin-users-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.admin-users-field-search {
    flex: 1;
    min-width: 200px;
}

.admin-users-field-role {
    min-width: 160px;
}

.admin-users-field-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-users-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.admin-users-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.admin-users-search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    pointer-events: none;
}

.admin-users-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.admin-users-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.admin-users-input::placeholder {
    color: var(--color-gray-400);
}

.admin-users-select {
    min-width: 140px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.admin-users-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.admin-users-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.admin-users-avatar-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
    background: var(--color-gray-100);
}

.admin-users-user .admin-dashboard-cell-name {
    display: block;
}

.admin-users-email {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

.admin-users-role {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.admin-users-role-student {
    background: rgba(59, 130, 246, 0.15);
    color: #2563eb;
}

.admin-users-role-instructor {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.admin-users-role-super_admin {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.admin-users-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.admin-users-date i {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.admin-users-pagination {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    justify-content: center;
}

.admin-users-pagination-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.admin-users-page-current {
    cursor: default;
    pointer-events: none;
}

.admin-users-empty .admin-dashboard-empty-icon {
    margin-bottom: var(--spacing-lg);
}

.admin-users-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.admin-users-empty-desc {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Admin Explore Courses
   ============================================ */

.admin-courses-filters-row.admin-courses-filters-row {
    gap: var(--spacing-md);
}

.admin-courses-field-category,
.admin-courses-field-price,
.admin-courses-field-level {
    min-width: 140px;
}

.admin-courses-field-minmax {
    min-width: 160px;
}

.admin-courses-minmax {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.admin-courses-input-num {
    width: 72px;
    padding-left: var(--spacing-md);
}

.admin-courses-card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.admin-courses-sort-form {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-courses-sort-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

.admin-courses-sort-select {
    min-width: 120px;
}

.admin-courses-grid {
    margin-top: 0;
}

/* ============================================
   Admin Revenue Dashboard
   ============================================ */

.admin-revenue-field-date {
    min-width: 160px;
}

.admin-revenue-date-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.admin-revenue-date-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Revenue header with actions */
.admin-revenue-header {
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-header-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.admin-revenue-header-row .admin-users-header-main {
    flex: 1;
    min-width: 0;
}

.admin-revenue-header-actions {
    flex-shrink: 0;
}

/* Top row: date filter + total revenue stat */
.admin-revenue-top-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-xl);
    align-items: start;
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-top-row .admin-revenue-filters {
    min-width: 0;
}

.admin-revenue-stat-featured {
    min-width: 280px;
}

.admin-revenue-filter-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-md);
}

.admin-revenue-filter-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Two-column tables section */
.admin-revenue-tables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.admin-revenue-summary {
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-stat .analytics-stat-content {
    flex: 1;
    min-width: 0;
}

.admin-revenue-tx {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.admin-revenue-card {
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-card:last-of-type {
    margin-bottom: 0;
}

.admin-revenue-empty {
    margin: 0;
    padding: var(--spacing-lg) 0;
}

@media (max-width: 1024px) {
    .admin-revenue-top-row {
        grid-template-columns: 1fr;
    }

    .admin-revenue-stat-featured {
        min-width: 0;
    }

    .admin-revenue-tables {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .admin-revenue-header-row {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-revenue-filter-row {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ============================================
   Admin Reports
   ============================================ */

.admin-reports-card {
    margin-bottom: var(--spacing-xl);
}

.admin-reports-card:last-child {
    margin-bottom: 0;
}

.admin-reports-form {
    max-width: 560px;
}

.admin-reports-date-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.admin-reports-actions {
    padding-top: 0;
}

@media (max-width: 480px) {
    .admin-reports-date-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Admin Roles & Permissions
   ============================================ */

.admin-roles-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.admin-roles-stat .analytics-stat-content {
    position: relative;
}

.admin-roles-stat-pct {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.admin-roles-stat-icon-student {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.admin-roles-stat-icon-instructor {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.admin-roles-stat-icon-admin {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.1));
    color: var(--color-error);
}

.admin-roles-change-select {
    min-width: 120px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    padding-right: 2rem;
}

.admin-roles-change-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.admin-roles-self-hint {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
}

@media (max-width: 900px) {
    .admin-roles-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .admin-users-header-main {
        flex-direction: column;
    }

    .admin-users-title {
        font-size: var(--font-size-2xl);
    }

    .admin-users-filters-row {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-users-field-search {
        min-width: 0;
    }

    .admin-users-field-role {
        min-width: 0;
    }

    .admin-users-field-actions {
        flex-wrap: wrap;
    }
}

@media (max-width: 1024px) {
    .admin-dashboard-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .admin-dashboard-tables {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .admin-dashboard-header-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-dashboard-title {
        font-size: var(--font-size-2xl);
    }

    .admin-dashboard-stats {
        grid-template-columns: 1fr;
    }

    .admin-dashboard-quick-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-dashboard-quick-buttons {
        flex-direction: column;
    }

    .admin-dashboard-quick-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Enrollment Page Styles
   ============================================ */

/* Enrollment Stats */
.enrollment-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.enrollment-stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
}

.enrollment-stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.enrollment-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.enrollment-stat-icon-primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.enrollment-stat-icon-success {
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.enrollment-stat-icon-warning {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}

.enrollment-stat-content {
    flex: 1;
    min-width: 0;
}

.enrollment-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    line-height: 1.2;
}

.enrollment-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

/* Enrollment Grid */
.enrollments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* Enrollment Card Enhancements */
.enrollment-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

.course-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.course-card-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
}

.course-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: 1.4;
}

.course-card-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.course-card-title a:hover {
    color: var(--color-primary);
}

.course-card-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
    margin: 0;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.course-card-instructor,
.course-card-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.course-card-instructor i,
.course-card-date i {
    font-size: var(--font-size-sm);
}

/* Enrollment Progress */
.enrollment-progress {
    margin-top: var(--spacing-sm);
}

.enrollment-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.enrollment-progress-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.enrollment-progress-value {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

/* Enrollment Status Badge */
.enrollment-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    align-self: flex-start;
}

.enrollment-status-completed {
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.enrollment-status-in-progress {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}

.enrollment-status-not-started {
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
}

.course-card-footer {
    padding: var(--spacing-lg);
    padding-top: 0;
    border-top: 1px solid var(--color-gray-200);
    margin-top: auto;
}

/* Responsive Enrollment Page */
@media (max-width: 968px) {
    .enrollments-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .enrollment-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 640px) {
    .enrollments-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .enrollment-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .enrollment-stat-card {
        padding: var(--spacing-md);
    }
    
    .course-card-body {
        padding: var(--spacing-md);
    }
}

@media (max-width: 375px) {
    .enrollment-stat-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .enrollment-stat-value {
        font-size: var(--font-size-xl);
    }
    
    .course-card-image-placeholder {
        height: 160px;
        font-size: 3rem;
    }
    
    .course-card-title {
        font-size: var(--font-size-base);
    }
    
    .course-card-description {
        font-size: var(--font-size-xs);
    }
}

/* ============================================
   Assignment Detail Page Styles
   ============================================ */

/* Assignment Detail Card */
.assignment-detail-card {
    padding: var(--spacing-xl);
    width: 100%;
    box-sizing: border-box;
}

.assignment-detail-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
}

.assignment-detail-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

.assignment-detail-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.assignment-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
}

.assignment-instructions {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.assignment-instructions-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.assignment-instructions-title i {
    color: var(--color-primary);
}

.assignment-instructions-content {
    background: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
}

/* Assignment Submission Card */
.assignment-submission-card {
    padding: var(--spacing-xl);
    width: 100%;
    box-sizing: border-box;
}

.assignment-submission-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
}

.assignment-submission-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

/* Submission File Card */
.submission-file-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(99, 102, 241, 0.03) 100%);
    border: 1.5px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.08);
}

.submission-file-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.submission-file-card:hover {
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.12);
    transform: translateY(-2px);
}

.submission-file-card:hover::before {
    opacity: 1;
}

.submission-file-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
}

.submission-file-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.submission-file-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.submission-file-card:hover .submission-file-icon {
    transform: scale(1.05) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.submission-file-card:hover .submission-file-icon::before {
    opacity: 1;
}

.submission-file-details {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.submission-file-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    line-height: 1.5;
    letter-spacing: -0.01em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    hyphens: none;
    position: relative;
    padding-left: var(--spacing-md);
    word-spacing: normal;
    max-width: 100%;
}

.submission-file-name::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.6;
}

.submission-file-date {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    min-width: 0;
    font-weight: var(--font-weight-medium);
}

.submission-file-date i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.submission-file-card .btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.submission-file-card .btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.submission-file-card .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.submission-file-card .btn:hover::before {
    width: 300px;
    height: 300px;
}

.submission-file-card .btn i {
    margin-right: var(--spacing-xs);
    transition: transform 0.3s ease;
}

.submission-file-card .btn:hover i {
    transform: translateY(2px);
}

.submission-file-date i {
    font-size: var(--font-size-xs);
}

/* Submission Grade Card */
.submission-grade-card {
    background: linear-gradient(135deg, var(--color-success-light) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 2px solid var(--color-success-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.submission-grade-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.submission-grade-icon {
    width: 56px;
    height: 56px;
    background: var(--color-success);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.submission-grade-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xs);
}

.submission-grade-score {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-black);
    color: var(--color-success);
    line-height: 1;
}

.submission-grade-max {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-normal);
    opacity: 0.7;
}

.submission-feedback {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(16, 185, 129, 0.2);
}

.submission-feedback-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.submission-feedback-label i {
    color: var(--color-success);
}

.submission-feedback-content {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    line-height: 1.7;
    border-left: 3px solid var(--color-success);
}

/* Assignment Upload Form */
.assignment-upload-form {
    margin-top: var(--spacing-lg);
}

.assignment-dropzone {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    background: var(--color-gray-50);
    transition: all var(--transition-base);
    cursor: pointer;
    margin-bottom: var(--spacing-lg);
}

.assignment-dropzone:hover,
.assignment-dropzone.active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.assignment-dropzone-icon {
    font-size: 2.5rem;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

.assignment-dropzone:hover .assignment-dropzone-icon,
.assignment-dropzone.active .assignment-dropzone-icon {
    color: var(--color-primary);
}

.assignment-dropzone-content {
    margin-bottom: var(--spacing-sm);
}

.assignment-dropzone-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.assignment-dropzone-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.assignment-dropzone-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-xs);
}

.assignment-file-type,
.assignment-file-size {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Assignment Deadline Card */
.assignment-deadline-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-warning-light) 0%, rgba(251, 191, 36, 0.1) 100%);
    border: 2px solid var(--color-warning-light);
}

.assignment-deadline-card.assignment-deadline-overdue {
    background: linear-gradient(135deg, var(--color-error-light) 0%, rgba(239, 68, 68, 0.1) 100%);
    border-color: var(--color-error-light);
}

.assignment-deadline-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.assignment-deadline-icon {
    width: 40px;
    height: 40px;
    background: var(--color-warning);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.assignment-deadline-overdue .assignment-deadline-icon {
    background: var(--color-error);
}

.assignment-deadline-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

.assignment-deadline-content {
    text-align: center;
}

.assignment-deadline-date {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-black);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.assignment-deadline-time {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.assignment-deadline-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-error);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.assignment-deadline-none {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
}

/* Assignment Resource Card */
.assignment-resource-card {
    padding: var(--spacing-xl);
}

.assignment-resource-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.assignment-resource-title i {
    color: var(--color-primary);
}

.assignment-resource-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.assignment-resource-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.assignment-resource-link:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-200);
    color: var(--color-primary);
    transform: translateX(4px);
}

.assignment-resource-link i:first-child {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    flex-shrink: 0;
}

.assignment-resource-link span {
    flex: 1;
}

.assignment-resource-link i:last-child {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.assignment-resource-link:hover i:last-child {
    color: var(--color-primary);
}

/* Responsive Assignment Detail */
@media (max-width: 968px) {
    .grid.grid-3 {
        grid-template-columns: 1fr;
    }
    
    .col-span-2,
    .col-span-1 {
        grid-column: span 1;
    }
}

@media (max-width: 640px) {
    .assignment-detail-card,
    .assignment-submission-card,
    .assignment-deadline-card,
    .assignment-resource-card {
        padding: var(--spacing-md);
    }
    
    .submission-file-card {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
    }
    
    .submission-file-card .btn {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .submission-file-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }
    
    .submission-file-name {
        font-size: var(--font-size-base);
    }
    
    .submission-grade-header {
        flex-direction: column;
        text-align: center;
    }
    
    .assignment-dropzone {
        padding: var(--spacing-xl);
    }
    
    .assignment-dropzone-icon {
        font-size: 3rem;
    }
}

@media (max-width: 375px) {
    .assignment-dropzone-info {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .submission-grade-score {
        font-size: var(--font-size-3xl);
    }
}

/* ============================================
   Help Center Styles
   ============================================ */

/* ============================================
   HELP CENTER REDESIGN
   ============================================ */

.help-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.help-sidebar {
    min-width: 0;
    position: sticky;
    top: var(--spacing-xl);
}

.help-sidebar-card {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.help-sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

.help-sidebar-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.help-sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
}

.help-sidebar-list {
    list-style: none;
    padding: var(--spacing-md);
    margin: 0;
}

.help-sidebar-list li {
    margin-bottom: var(--spacing-xs);
}

.help-sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    font-weight: var(--font-weight-medium);
    position: relative;
}

.help-sidebar-link i {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    flex-shrink: 0;
    transition: color 0.2s ease;
}

.help-sidebar-link span:first-of-type {
    flex: 1;
    min-width: 0;
}

.help-sidebar-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 var(--spacing-xs);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-left: auto;
}

.help-sidebar-link:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
    transform: translateX(4px);
}

.help-sidebar-link:hover i {
    color: var(--color-primary);
}

.help-sidebar-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    border-left: 3px solid var(--color-primary);
    padding-left: calc(var(--spacing-md) - 3px);
}

.help-sidebar-link.active i {
    color: var(--color-primary);
}

.help-sidebar-link.active .help-sidebar-count {
    background: var(--color-primary);
    color: white;
}

.help-content {
    min-width: 0;
}

.help-count-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.help-count-badge i {
    font-size: var(--font-size-base);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.faq-card {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.faq-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.faq-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.faq-card:hover::before {
    opacity: 1;
}

.faq-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

.faq-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

.faq-card:hover .faq-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.faq-category-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.faq-category-badge i {
    font-size: var(--font-size-sm);
}

.faq-card-body {
    padding: var(--spacing-lg);
}

.faq-question {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-md) 0;
    line-height: var(--line-height-tight);
}

.faq-question-link {
    color: var(--color-gray-900);
    text-decoration: none;
    transition: color 0.2s ease;
    display: block;
}

.faq-question-link:hover {
    color: var(--color-primary);
}

.faq-preview {
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

.faq-card-footer {
    padding: var(--spacing-lg);
    padding-top: 0;
    border-top: 1px solid var(--color-gray-200);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
}

.faq-read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.faq-read-more:hover {
    gap: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.faq-read-more i {
    font-size: var(--font-size-base);
    transition: transform 0.2s ease;
}

.faq-read-more:hover i {
    transform: translateX(4px);
}

/* Responsive Help Center */
@media (max-width: 968px) {
    .help-layout {
        grid-template-columns: 250px 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .help-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .help-sidebar {
        order: 2;
        position: static;
    }
    
    .help-content {
        order: 1;
    }
    
    .help-sidebar-card {
        padding: 0;
    }
    
    .faq-card-header {
        padding: var(--spacing-md);
    }
    
    .faq-card-body {
        padding: var(--spacing-md);
    }
    
    .faq-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .faq-question {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 375px) {
    .help-layout {
        gap: var(--spacing-md);
    }
    
    .faq-card-header,
    .faq-card-body,
    .faq-card-footer {
        padding: var(--spacing-md);
    }
    
    .faq-question {
        font-size: var(--font-size-base);
    }
    
    .faq-preview {
        font-size: var(--font-size-sm);
    }
}

/* ============================================
   PROFILE PAGE REDESIGN
   ============================================ */

/* Profile Header */
.profile-header-modern {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: var(--spacing-xl);
}

.profile-cover-modern {
    height: 180px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
}

.profile-cover-modern::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.05) 100%);
}

.profile-header-content-modern {
    padding: var(--spacing-xl);
    padding-top: calc(var(--spacing-xl) + 20px);
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    position: relative;
}

.profile-avatar-modern {
    width: 160px;
    height: 160px;
    border-radius: var(--radius-full);
    border: 6px solid white;
    background: white;
    margin-top: -80px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.profile-avatar-modern img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder-modern {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-info-modern {
    flex: 1;
    min-width: 0;
}

.profile-name-modern {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-meta-modern {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    align-items: center;
}

.profile-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.profile-meta-item i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.profile-actions-modern {
    flex-shrink: 0;
}

/* Profile Layout */
.profile-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.profile-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.profile-main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Profile Stats Card */
.profile-stats-card {
    padding: var(--spacing-xl);
}

.profile-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 var(--spacing-lg) 0;
}

.profile-stats-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.profile-stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.profile-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.profile-stat-icon-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.profile-stat-icon-success {
    background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
}

.profile-stat-icon-info {
    background: linear-gradient(135deg, var(--color-info) 0%, #2563eb 100%);
}

.profile-stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.profile-stat-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.profile-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

/* Profile Achievements Card */
.profile-achievements-card {
    padding: var(--spacing-xl);
}

.profile-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.profile-badge-count {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
        font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

/* Profile Streak Card */
.profile-streak-card {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.profile-streak-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.profile-streak-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.profile-streak-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-warning);
    background: rgba(245, 158, 11, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
}

.profile-streak-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.profile-streak-icon {
    font-size: var(--font-size-4xl);
    color: var(--color-warning);
    flex-shrink: 0;
}

.profile-streak-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.profile-streak-days {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-black);
    color: var(--color-gray-900);
}

.profile-streak-best {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* Profile Badges Grid */
.profile-badges-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.profile-badge-item {
    text-align: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-badge-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.profile-badge-item-locked {
    opacity: 0.5;
    background: var(--color-gray-50);
}

.profile-badge-icon-earned {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    border: 4px solid white;
}

.profile-badge-icon-locked {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--color-gray-400);
    border: 4px solid white;
}

.profile-badge-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.profile-badge-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    line-height: var(--line-height-tight);
}

/* Profile Section */
.profile-section {
    width: 100%;
}

.profile-section-header-main {
    margin-bottom: var(--spacing-lg);
}

.profile-section-title-main {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
}

/* Profile Courses Grid */
.profile-courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.profile-course-card {
    display: block;
    text-decoration: none;
    padding: 0;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--color-gray-200);
    height: 100%;
}

.profile-course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.profile-course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-course-card:hover::before {
    opacity: 1;
}

.profile-course-thumbnail {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: var(--color-gray-100);
}

.profile-course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.profile-course-card:hover .profile-course-thumbnail img {
    transform: scale(1.05);
}

.profile-course-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.profile-course-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-course-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.profile-course-meta i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

.profile-course-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-success);
    margin-top: var(--spacing-xs);
}

.profile-course-status-completed {
    color: var(--color-success);
}

.profile-course-progress {
    margin-top: var(--spacing-sm);
}

.profile-course-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.profile-course-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.profile-course-progress-text {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

/* Profile Certificates Card (Sidebar) */
.profile-certificates-card {
    padding: var(--spacing-xl);
}

.profile-certificates-grid-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.profile-certificate-card-sidebar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: white;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-certificate-card-sidebar:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.profile-certificate-icon-sidebar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

.profile-certificate-card-sidebar:hover .profile-certificate-icon-sidebar {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.profile-certificate-content-sidebar {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.profile-certificate-title-sidebar {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-certificate-date-sidebar {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.profile-certificate-date-sidebar i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

/* Profile Certificates Grid (Main Content - kept for backward compatibility) */
.profile-certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.profile-certificate-card {
    display: block;
    text-decoration: none;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
}

.profile-certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-certificate-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.profile-certificate-card:hover::before {
    opacity: 1;
}

.profile-certificate-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

.profile-certificate-card:hover .profile-certificate-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.profile-certificate-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-certificate-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.profile-certificate-date i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

/* Responsive Profile */
@media (max-width: 968px) {
    .profile-layout {
        grid-template-columns: 1fr;
    }
    
    .profile-sidebar {
        order: 2;
    }
    
    .profile-main-content {
        order: 1;
    }
    
    .profile-header-content-modern {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .profile-avatar-modern {
        margin-top: -60px;
        width: 120px;
        height: 120px;
    }
    
    .profile-courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .profile-certificates-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 640px) {
    .profile-cover-modern {
        height: 140px;
    }
    
    .profile-avatar-modern {
        width: 100px;
        height: 100px;
        margin-top: -50px;
    }
    
    .profile-name-modern {
        font-size: var(--font-size-2xl);
    }
    
    .profile-meta-modern {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .profile-courses-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-badges-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-stat-item {
        padding: var(--spacing-sm);
    }
    
    .profile-stat-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 375px) {
    .profile-certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-course-thumbnail {
        height: 120px;
    }
    
    .profile-course-content {
        padding: var(--spacing-md);
    }
}

/* ============================================
   PREFERENCES PAGE REDESIGN
   ============================================ */

.preferences-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Preferences Section Card */
.preferences-section-card {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .preferences-section-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.preferences-section-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

[data-theme="dark"] .preferences-section-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    border-color: var(--color-primary-light);
}

.preferences-section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

[data-theme="dark"] .preferences-section-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.08) 100%);
    border-bottom-color: var(--border-color);
}

.preferences-section-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.preferences-section-icon-appearance {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.preferences-section-icon-notifications {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.preferences-section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs) 0;
}

[data-theme="dark"] .preferences-section-title {
    color: var(--text-primary);
}

.preferences-section-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
}

[data-theme="dark"] .preferences-section-subtitle {
    color: var(--text-secondary);
}

.preferences-section-content {
    padding: var(--spacing-xl);
}

[data-theme="dark"] .preferences-section-content {
    background-color: var(--bg-secondary);
}

/* Preference Item */
.preference-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: white;
    transition: all 0.2s ease;
    margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .preference-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.preference-item:last-child {
    margin-bottom: 0;
}

.preference-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .preference-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.preference-item-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.preference-item-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: white;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--color-gray-400) 0%, var(--color-gray-500) 100%);
}

.preference-item-icon-email {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.preference-item-icon-push {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.preference-item-icon-achievement {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.preference-item-icon-reminder {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.preference-item-icon-announcement {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.preference-item-icon-message {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.preference-item-info {
    flex: 1;
    min-width: 0;
}

.preference-item-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
}

[data-theme="dark"] .preference-item-label {
    color: var(--text-primary);
}

.preference-item-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

[data-theme="dark"] .preference-item-description {
    color: var(--text-secondary);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-gray-300);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: var(--radius-full);
}

[data-theme="dark"] .toggle-slider {
    background-color: var(--color-gray-600);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-switch:hover .toggle-slider {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.toggle-switch input:focus + .toggle-slider {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

/* Preference Select */
.preference-item-select {
    align-items: flex-start;
}

.preference-select-wrapper {
    position: relative;
    flex-shrink: 0;
    min-width: 200px;
}

.preference-select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-900);
    background: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    appearance: none;
    cursor: pointer;
    transition: all 0.2s ease;
    padding-right: calc(var(--spacing-xl) + var(--spacing-md));
}

[data-theme="dark"] .preference-select {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.preference-select:hover {
    border-color: var(--color-primary-light);
}

[data-theme="dark"] .preference-select:hover {
    border-color: var(--color-primary-light);
}

.preference-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

[data-theme="dark"] .preference-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.preference-select-arrow {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    pointer-events: none;
}

[data-theme="dark"] .preference-select-arrow {
    color: var(--text-secondary);
}

/* Notification Preferences Grid */
.preferences-notifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.preference-item-notification {
    margin-bottom: 0;
}

/* Form Actions */
.preferences-form-actions {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

[data-theme="dark"] .preferences-form-actions {
    border-top-color: var(--border-color);
}

.preferences-form-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Responsive Preferences */
@media (max-width: 768px) {
    .preferences-section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .preferences-section-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }
    
    .preferences-notifications-grid {
        grid-template-columns: 1fr;
    }
    
    .preference-select-wrapper {
        min-width: 100%;
        margin-top: var(--spacing-sm);
    }
    
    .preference-item-select {
        flex-direction: column;
        align-items: stretch;
    }
    
    .preferences-form-actions {
        flex-direction: column;
    }
    
    .preferences-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .preferences-section-content {
        padding: var(--spacing-lg);
    }
    
    .preference-item {
        padding: var(--spacing-md);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .preference-item-content {
        width: 100%;
    }
    
    .toggle-switch {
        align-self: flex-end;
    }
    
    .preference-select-wrapper {
        width: 100%;
    }
}