/**
 * Chemistry Hub - Courses Styles (Categories & Grid)
 */

/* =====================================================
   Course Categories
   ===================================================== */
.ch-course-categories {
    background-color: hsl(210 40% 96% / 0.3);
    width: 100%;
}

.ch-categories-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 10;
}

.ch-categories-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--ch-primary);
    margin-bottom: 1rem;
    position: relative;
    z-index: 10;
}

@media (min-width: 768px) {
    .ch-categories-title {
        font-size: 2.25rem;
    }
}

.ch-categories-description {
    color: var(--ch-muted-foreground);
    font-size: 1.125rem;
    max-width: 42rem;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.ch-categories-grid {
    display: grid;
    gap: 1.5rem;
    position: relative;
    z-index: 10;
}

@media (min-width: 768px) {
    .ch-categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.ch-category-card {
    padding: 1.5rem;
    cursor: pointer;
    background-color: var(--ch-card);
    position: relative;
    z-index: 10;
}

.ch-category-card:hover .ch-category-icon {
    transform: scale(1.1);
}

.ch-category-card:hover .ch-category-icon svg,
.ch-category-card:hover .ch-category-icon i {
    transform: scale(1.1);
}

.ch-category-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.ch-category-icon svg {
    width: 1.75rem;
    height: 1.75rem;
    color: white;
    transition: transform 0.3s ease;
}

.ch-category-icon i {
    font-size: 1.75rem;
    color: white;
    transition: transform 0.3s ease;
}

.ch-category-icon svg,
.ch-category-icon i {
    width: 1em;
    height: 1em;
    max-width: 100%;
    max-height: 100%;
}

/* Custom icon colors */
.ch-category-icon[data-bg-color] {
    background-color: var(--icon-bg-color, #3b82f6);
}

.ch-category-icon[data-icon-color] svg,
.ch-category-icon[data-icon-color] i {
    color: var(--icon-color, white);
}

.ch-category-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ch-primary);
    margin-bottom: 0.5rem;
}

.ch-category-description {
    color: var(--ch-muted-foreground);
    margin-bottom: 1rem;
}

.ch-category-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ch-category-count {
    color: var(--ch-secondary);
    font-weight: 600;
}

.ch-category-arrow {
    color: var(--ch-primary);
    transition: transform 0.3s ease;
    text-decoration: none;
}

.ch-category-card:hover .ch-category-arrow {
    transform: translateX(-4px);
}

/* =====================================================
   Courses Grid (All Courses)
   ===================================================== */
.ch-courses-section {
    background-color: hsl(210 40% 96% / 0.3);
    width: 100%;
}

.ch-courses-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    z-index: 10;
}

.ch-courses-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--ch-primary);
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .ch-courses-title {
        font-size: 2.25rem;
    }
}

.ch-courses-description {
    color: var(--ch-muted-foreground);
    font-size: 1.125rem;
    max-width: 42rem;
    margin: 0 auto;
}

.ch-courses-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 768px) {
    .ch-courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.ch-course-card {
    overflow: hidden;
    cursor: pointer;
}

.ch-course-card:hover .ch-course-image img {
    transform: scale(1.1);
}

.ch-course-card:hover .ch-course-play {
    opacity: 1;
}

.ch-course-card:hover .ch-course-title {
    color: var(--ch-secondary);
}

.ch-course-image {
    position: relative;
    height: 12rem;
    overflow: hidden;
}

.ch-course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.ch-course-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, hsl(222 60% 22% / 0.6), transparent);
}

.ch-course-badges {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ch-course-badge {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.ch-course-badge.level {
    background-color: var(--ch-primary);
    color: white;
}

.ch-course-badge.bestseller {
    background-color: var(--ch-secondary);
    color: white;
}

.ch-course-badge.free {
    background-color: var(--ch-secondary);
    color: white;
}

.ch-course-badge.category {
    background-color: hsl(222 60% 22% / 0.8);
    color: white;
}

.ch-course-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ch-course-play-btn {
    width: 4rem;
    height: 4rem;
    border-radius: 9999px;
    background-color: var(--ch-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px -5px hsl(152 76% 40% / 0.5);
}

.ch-course-play-btn svg {
    width: 1.75rem;
    height: 1.75rem;
    color: white;
    margin-right: -2px;
}

.ch-course-content {
    padding: 1.5rem;
}

.ch-course-title {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--ch-primary);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.ch-course-description {
    color: var(--ch-muted-foreground);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ch-course-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--ch-muted-foreground);
    margin-bottom: 1rem;
}

.ch-course-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.ch-course-stat svg {
    width: 0.875rem;
    height: 0.875rem;
    color: var(--ch-secondary);
}

.ch-course-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.ch-course-stars {
    display: flex;
    gap: 0.125rem;
}

.ch-course-stars svg {
    width: 0.875rem;
    height: 0.875rem;
}

.ch-course-stars svg.filled {
    color: #facc15;
    fill: #facc15;
}

.ch-course-stars svg.empty {
    color: #d1d5db;
}

.ch-course-rating-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ch-primary);
}

.ch-course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--ch-border);
}

.ch-course-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ch-secondary);
}

.ch-course-cta {
    background-color: var(--ch-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
    text-decoration: none;
}

.ch-course-cta:hover {
    background-color: hsl(222 60% 22% / 0.9);
}

.ch-courses-more {
    text-align: center;
    margin-top: 3rem;
}