/* Learn Module Styles */

.learn-container {
    display: flex;
    height: calc(100vh - 60px);
    background: var(--bg-primary);
}

/* Sidebar */
.learn-sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: width 0.3s ease;
}

.learn-sidebar.collapsed {
    width: 60px;
}

.learn-sidebar.collapsed .sidebar-header h2,
.learn-sidebar.collapsed .user-stats-card,
.learn-sidebar.collapsed .sidebar-section,
.learn-sidebar.collapsed .category-item span:not(.category-icon) {
    display: none;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

/* User Stats Card */
.user-stats-card {
    margin: 16px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.stats-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.stats-icon {
    font-size: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px;
    background: var(--bg-primary);
    border-radius: 8px;
}

.stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
}

/* Sidebar Sections */
.sidebar-section {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin: 0 0 12px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.section-header h3 {
    margin: 0;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 12px;
    cursor: pointer;
    padding: 0;
}

.btn-link:hover {
    text-decoration: underline;
}

/* Category List */
.category-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
    color: var(--text-primary);
}

.category-item:hover {
    background: var(--bg-hover);
}

.category-item.active {
    background: var(--primary-color-light);
    color: var(--primary-color);
}

.category-icon {
    font-size: 16px;
    width: 24px;
    text-align: center;
}

.category-count {
    margin-left: auto;
    font-size: 12px;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    color: var(--text-secondary);
}

/* Difficulty Filter */
.difficulty-filter {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

.difficulty-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.difficulty-badge.beginner {
    background: #dcfce7;
    color: #166534;
}

.difficulty-badge.intermediate {
    background: #fef3c7;
    color: #92400e;
}

.difficulty-badge.advanced {
    background: #fee2e2;
    color: #991b1b;
}

/* Certificates Preview */
.certificates-preview {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cert-preview-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.cert-preview-item .cert-icon {
    font-size: 24px;
}

.cert-preview-item .cert-info {
    flex: 1;
    min-width: 0;
}

.cert-preview-item .cert-title {
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cert-preview-item .cert-date {
    font-size: 10px;
    color: var(--text-secondary);
}

.empty-state-small {
    text-align: center;
    padding: 16px;
    color: var(--text-secondary);
}

.empty-state-small span {
    font-size: 24px;
    display: block;
    margin-bottom: 8px;
}

.empty-state-small p {
    font-size: 12px;
    margin: 0;
}

/* Main Content */
.learn-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
.learn-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
}

.tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.2s ease;
}

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

.tab.active {
    background: var(--primary-color);
    color: white;
}

.tab .badge {
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
}

.tab:not(.active) .badge {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tab .badge.warning {
    background: #fef3c7;
    color: #92400e;
}

/* Search Box */
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 280px;
}

.search-box svg {
    color: var(--text-secondary);
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

/* Sort Select */
.sort-select {
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
}

/* Mandatory Alert */
.mandatory-alert {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 16px 24px;
    padding: 16px;
    background: linear-gradient(135deg, #fef3c7, #fef9c3);
    border: 1px solid #f59e0b;
    border-radius: 12px;
}

.alert-icon {
    font-size: 32px;
}

.alert-content {
    flex: 1;
}

.alert-content strong {
    display: block;
    color: #92400e;
    margin-bottom: 4px;
}

.alert-content p {
    margin: 0;
    font-size: 14px;
    color: #78350f;
}

.btn-primary-sm {
    padding: 8px 16px;
    background: #f59e0b;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.btn-primary-sm:hover {
    background: #d97706;
}

/* Tab Content */
.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.tab-content.active {
    display: block;
}

/* Courses Section */
.courses-section {
    margin-bottom: 32px;
}

.courses-section .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.courses-section .section-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.section-icon {
    font-size: 20px;
}

.courses-count {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Courses Carousel */
.courses-carousel {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
}

.courses-carousel::-webkit-scrollbar {
    height: 6px;
}

.courses-carousel::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Course Card */
.course-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.course-thumbnail {
    height: 140px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color-dark));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.course-thumbnail .placeholder-icon {
    font-size: 48px;
    opacity: 0.5;
}

.course-mandatory-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    background: #dc2626;
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
}

.course-progress-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
}

.course-content {
    padding: 16px;
}

.course-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.course-progress {
    margin-top: 12px;
}

.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #10b981);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    display: block;
}

/* Courses List */
.courses-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.course-list-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.course-list-item:hover {
    background: var(--bg-hover);
}

.course-list-thumbnail {
    width: 80px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color-dark));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-list-thumbnail .placeholder-icon {
    font-size: 24px;
    opacity: 0.5;
}

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

.course-list-info h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 4px 0;
    color: var(--text-primary);
}

.course-list-info .course-meta {
    margin-bottom: 8px;
}

.course-list-progress {
    width: 200px;
}

.course-list-action {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Mandatory List */
.mandatory-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mandatory-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.2s ease;
}

.mandatory-item.overdue {
    border-color: #dc2626;
    background: #fef2f2;
}

.mandatory-item.urgent {
    border-color: #f59e0b;
    background: #fffbeb;
}

.mandatory-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.mandatory-info {
    flex: 1;
}

.mandatory-info h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 4px 0;
    color: var(--text-primary);
}

.mandatory-due {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
}

.mandatory-due.overdue {
    color: #dc2626;
    font-weight: 600;
}

.mandatory-due.urgent {
    color: #f59e0b;
    font-weight: 600;
}

/* Certificates Grid */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.certificate-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.certificate-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.certificate-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.certificate-card-header .cert-icon {
    font-size: 32px;
}

.certificate-card-header h4 {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.certificate-card-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.certificate-card-body .cert-score {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.certificate-card-body .cert-date {
    font-size: 12px;
    color: var(--text-secondary);
}

.certificate-card-footer {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

/* Modal Styles */
.modal {
    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: 1000;
    padding: 20px;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-lg {
    max-width: 800px;
}

.modal-fullscreen {
    max-width: 95vw;
    height: 90vh;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.modal-body {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* Course Detail */
.course-detail-header {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.course-detail-header .course-thumbnail {
    width: 200px;
    height: 150px;
    border-radius: 12px;
    flex-shrink: 0;
}

.course-info {
    flex: 1;
}

.course-info .course-meta {
    margin-bottom: 12px;
}

.course-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Lessons Section */
.lessons-section {
    margin-top: 24px;
}

.lessons-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 16px 0;
    color: var(--text-primary);
}

.lessons-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lesson-item:hover {
    background: var(--bg-hover);
}

.lesson-item.completed {
    border-color: #10b981;
}

.lesson-number {
    width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.lesson-item.completed .lesson-number {
    background: #10b981;
    color: white;
}

.lesson-info {
    flex: 1;
}

.lesson-info h5 {
    font-size: 14px;
    font-weight: 500;
    margin: 0 0 2px 0;
    color: var(--text-primary);
}

.lesson-info span {
    font-size: 12px;
    color: var(--text-secondary);
}

.lesson-action {
    color: var(--primary-color);
}

/* Quiz Section */
.quiz-section {
    margin-top: 24px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
}

.quiz-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 16px 0;
    color: var(--text-primary);
}

.quiz-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-meta {
    display: flex;
    gap: 16px;
}

.quiz-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* Quiz Modal */
.quiz-header-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.quiz-timer {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.quiz-progress {
    margin-bottom: 24px;
}

.quiz-progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.quiz-progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.quiz-progress-text {
    display: block;
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.quiz-question {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-option:hover {
    border-color: var(--primary-color);
}

.quiz-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-color-light);
}

.quiz-option.correct {
    border-color: #10b981;
    background: #dcfce7;
}

.quiz-option.incorrect {
    border-color: #dc2626;
    background: #fee2e2;
}

.option-letter {
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-secondary);
}

.quiz-option.selected .option-letter {
    background: var(--primary-color);
    color: white;
}

.option-text {
    flex: 1;
    font-size: 15px;
    color: var(--text-primary);
}

/* Quiz Result */
.quiz-result {
    text-align: center;
}

.result-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.result-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.result-message {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0 0 24px 0;
}

.result-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #10b981);
    display: flex;
    align-items: center;
    justify-content: center;
}

.score-circle.failed {
    background: linear-gradient(135deg, #f59e0b, #dc2626);
}

.score-value {
    font-size: 32px;
    font-weight: 700;
    color: white;
}

.score-details {
    text-align: left;
}

.score-detail {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.score-detail:last-child {
    border-bottom: none;
}

.detail-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.detail-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.result-certificate {
    padding: 16px;
    background: linear-gradient(135deg, #fef3c7, #fef9c3);
    border-radius: 12px;
    margin-top: 24px;
}

.result-certificate p {
    font-size: 16px;
    font-weight: 600;
    color: #92400e;
    margin: 0 0 12px 0;
}

/* Lesson Modal */
.lesson-nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lesson-body {
    display: flex;
    gap: 24px;
    padding: 0;
}

.lesson-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;