/* ===== MODULES LISTING ===== */
.modules-hero {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.modules-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modules-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Filters */
.modules-filters {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}

.filter-btn.active {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--primary-light);
    color: var(--primary-light);
}

/* Modules Grid */
.modules-grid-section {
    padding: var(--spacing-2xl) 0;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.module-card {
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

.module-card:hover {
    transform: translateY(-4px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.module-category {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.module-difficulty {
    font-size: 1rem;
}

.module-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.module-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.module-title a:hover {
    color: var(--primary-light);
}

.module-summary {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.module-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.module-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.module-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.action-btn.watch {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.action-btn.watch:hover {
    background: rgba(239, 68, 68, 0.2);
}

.action-btn.read {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.action-btn.read:hover {
    background: rgba(59, 130, 246, 0.2);
}

.action-btn.fix {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.action-btn.fix:hover {
    background: rgba(16, 185, 129, 0.2);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

/* ===== MODULE DETAIL ===== */
.module-detail {
    padding: var(--spacing-2xl) 0;
}

.container-wide {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.module-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.module-breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
}

.module-breadcrumbs a:hover {
    color: var(--primary-light);
}

.module-detail-header {
    margin-bottom: var(--spacing-2xl);
}

.module-meta-info {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.module-category-badge,
.module-difficulty-badge,
.module-time {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.module-difficulty-badge {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

.module-time {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

.module-detail-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.module-detail-summary {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.module-tags-list {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Tabs */
.module-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s ease;
}

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

.tab-btn.active {
    color: var(--primary-light);
    border-bottom-color: var(--primary-light);
}

.tab-content-wrapper {
    min-height: 400px;
}

.tab-content {
    display: none;
}

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

.module-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Video */
.video-container {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.video-timestamps {
    background: var(--bg-glass);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.video-timestamps h3 {
    margin-bottom: var(--spacing-md);
}

.video-timestamps ul {
    list-style: none;
    padding: 0;
}

.video-timestamps li {
    margin-bottom: var(--spacing-sm);
}

.video-timestamps a {
    color: var(--text-secondary);
    text-decoration: none;
}

.video-timestamps a:hover {
    color: var(--primary-light);
}

/* Fix */
.fix-content {
    max-width: 800px;
    margin: 0 auto;
}

.exercise-card {
    background: var(--bg-glass);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.btn-lab {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-lab:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

/* Module Navigation */
.module-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-module {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-module:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.nav-module.next {
    justify-content: flex-end;
    text-align: right;
}

.nav-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
}

.nav-title {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .modules-title {
        font-size: 2rem;
    }

    .modules-grid {
        grid-template-columns: 1fr;
    }

    .module-detail-title {
        font-size: 1.75rem;
    }

    .module-navigation {
        grid-template-columns: 1fr;
    }

    .nav-module.next {
        justify-content: flex-start;
        text-align: left;
    }
}