/* Video Lesson Styles */

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--text-muted);
}

.breadcrumbs-separator {
    color: var(--text-muted);
    opacity: 0.5;
}

.video-lesson-container {
    max-width: 1200px;
    margin: 0 auto;
}

.video-player-wrapper {
    position: relative;
    width: 100%;
    margin-bottom: 32px;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.video-player-wrapper video {
    width: 100%;
    display: block;
}

.lesson-info {
    margin-bottom: 48px;
}

.lesson-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.lesson-description {
    margin-bottom: 24px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.lesson-description p {
    margin-bottom: 12px;
}

.lesson-description ul,
.lesson-description ol {
    margin-bottom: 12px;
    padding-left: 24px;
}

.lesson-actions {
    margin-bottom: 24px;
}

.lesson-completed-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--success-bg, #d4edda);
    border: 1px solid var(--success-border, #c3e6cb);
    border-radius: 6px;
    color: var(--success-text, #155724);
    font-weight: 500;
}

.lesson-navigation {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.lesson-navigation .btn {
    flex: 1;
    min-width: 150px;
}

/* Course Structure Sidebar */
.course-structure {
    margin-top: 48px;
    padding: 24px;
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 8px;
}

.course-structure h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.course-section {
    margin-bottom: 24px;
}

.course-section:last-child {
    margin-bottom: 0;
}

.course-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color, #e0e0e0);
    margin-bottom: 8px;
}

.section-title {
    font-weight: 600;
    color: var(--text-primary);
}

.section-progress {
    font-size: 13px;
    color: var(--text-muted);
}

.course-section-lessons {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.lesson-item:hover {
    background: var(--hover-bg, #f5f5f5);
}

.lesson-item--current {
    background: var(--primary-bg, #e3f2fd);
    color: var(--primary, #1976d2);
    font-weight: 500;
}

.lesson-item--completed .lesson-title-text {
    text-decoration: line-through;
    opacity: 0.7;
}

.lesson-check {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--success, #4caf50);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
}

.lesson-check--empty {
    background: transparent;
    border: 2px solid var(--border-color, #e0e0e0);
    color: var(--text-muted);
    font-size: 16px;
}

.lesson-title-text {
    flex: 1;
    font-size: 14px;
}

.lesson-duration {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-muted);
}

/* Course page lesson cards */
.course-lesson-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

.course-lesson-card:hover {
    background: #f5f5f5;
    border-color: #bdbdbd;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.course-lesson-card--completed {
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .lesson-title {
        font-size: 24px;
    }

    .lesson-navigation {
        flex-direction: column;
    }

    .lesson-navigation .btn {
        width: 100%;
    }

    .breadcrumbs {
        font-size: 12px;
        flex-wrap: wrap;
    }
}