/* ============================================
   Course Cards Styles - Compact Carousel Design
   ============================================ */

.courses {
    background-color: white;
    overflow: visible;
    padding: var(--spacing-6) 0;
}

/* Course section backgrounds */
#popular-courses {
    background-color: white;
}

#new-courses {
    background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 50%, #F9FAFB 100%);
}

#top-courses {
    background-color: white;
}

.courses__carousel {
    position: relative;
    margin-top: var(--spacing-4);
    padding: 0;
}

.courses__track {
    display: flex;
    gap: var(--spacing-3);
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    padding: var(--spacing-2) 0 var(--spacing-4) 0;
    -webkit-overflow-scrolling: touch;
    /* Hide scrollbar */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

/* Hide scrollbar for Chrome/Safari */
.courses__track::-webkit-scrollbar {
    display: none;
}

/* Legacy grid support (fallback) */
.courses__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-4);
}

/* ===== Compact Course Card (280px) ===== */
.course-card {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 300ms ease;
    display: flex;
    flex-direction: column;
    min-width: 280px;
    max-width: 280px;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 32px rgba(0, 91, 255, 0.15),
                0 8px 16px rgba(0, 0, 0, 0.08);
}

/* ===== Course Image ===== */
.course-card__image {
    position: relative;
    width: 100%;
    aspect-ratio: var(--course-card-image-aspect);
    overflow: hidden;
    background-color: var(--color-bg-light);
}

.course-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

/* ===== Hover Overlay ===== */
.course-card__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.course-card:hover .course-card__overlay {
    opacity: 1;
    pointer-events: all;
}

/* ===== Badges - Liquid Glass ===== */
.course-card__badge {
    position: absolute;
    top: var(--spacing-2);
    left: var(--spacing-2);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    z-index: 1;
    letter-spacing: 0.5px;
    /* Liquid Glass Effect */
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.course-card__badge--bestseller {
    background: rgba(245, 158, 11, 0.85);
    color: white;
}

.course-card__badge--new {
    background: rgba(16, 185, 129, 0.85);
    color: white;
}

/* ===== Course Content - Compact ===== */
.course-card__content {
    padding: var(--spacing-2) var(--spacing-2-5) var(--spacing-2-5);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.course-card__category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-1);
}

.course-card__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: #000000;
    margin-bottom: var(--spacing-1-5);
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 40px;
}

.course-card__title a {
    color: #000000;
    text-decoration: none;
}

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

.course-card__description {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
    margin-bottom: var(--spacing-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Author - Compact ===== */
.course-card__author {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: var(--spacing-1-5);
}

.author__avatar {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.author__name {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

/* ===== Rating - Compact ===== */
.course-card__rating {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: var(--spacing-1-5);
}

.rating__stars {
    display: flex;
    gap: 1px;
}

.star {
    width: 14px;
    height: 14px;
    color: var(--color-warning);
}

.star--filled {
    fill: var(--color-warning);
}

.star--half {
    fill: var(--color-warning);
    opacity: 0.5;
}

.rating__score {
    font-size: 0.8125rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.rating__count {
    font-size: 0.6875rem;
    color: var(--color-text-secondary);
}

/* ===== Course Meta - Compact ===== */
.course-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-1-5);
    margin-bottom: var(--spacing-2);
    flex-wrap: wrap;
}

.meta__item {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: 0.6875rem;
    color: var(--color-text-secondary);
}

.meta__item svg {
    width: 12px;
    height: 12px;
    color: var(--color-primary);
    /* Liquid Glass Icon Effect */
    filter: drop-shadow(0 2px 4px rgba(0, 91, 255, 0.2));
}

/* ===== Footer (Price & Button) - Compact ===== */
.course-card__footer {
    margin-top: auto;
    padding-top: var(--spacing-2);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-1-5);
}

.course-card__price {
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
}

.price__current {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: #000000; /* Черный по умолчанию */
}

.price__old {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    text-decoration: line-through;
}

/* Красный цвет только если есть скидка (присутствует старая цена) */
.course-card__price:has(.price__old) .price__current {
    color: var(--color-error);
}

.price__discount {
    padding: 3px 8px;
    /* Liquid Glass Badge - Red for discount */
    background: rgba(239, 68, 68, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow:
        0 2px 6px rgba(239, 68, 68, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* ===== Load More ===== */
.courses__load-more {
    text-align: center;
    margin-top: var(--spacing-6);
}

/* ===== Carousel Navigation Arrows ===== */
.carousel__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    /* Liquid Glass Style */
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.carousel__arrow:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-50%) scale(1.1);
    border-color: rgba(0, 91, 255, 0.3);
    box-shadow:
        0 6px 16px rgba(0, 91, 255, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.carousel__arrow svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    transition: all 200ms;
    filter: drop-shadow(0 1px 2px rgba(0, 91, 255, 0.2));
}

.carousel__arrow:hover svg {
    color: var(--color-primary-dark);
    filter: drop-shadow(0 2px 4px rgba(0, 91, 255, 0.3));
}

.carousel__arrow--prev {
    left: 12px;
}

.carousel__arrow--next {
    right: 12px;
}

.carousel__arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== Section Header with Navigation ===== */
.courses__header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-2);
    text-align: center;
}

.courses__header .section__title {
    margin-bottom: var(--spacing-1);
}

.courses__nav {
    display: flex;
    gap: var(--spacing-2);
}

/* ===== Wishlist/Favorite Button - Liquid Glass ===== */
.course-card__favorite {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-2);
    z-index: 2;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    /* Enhanced Liquid Glass Effect */
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.course-card__favorite:hover {
    transform: scale(1.15);
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.course-card__favorite svg {
    width: 18px;
    height: 18px;
    color: var(--color-text-secondary);
    transition: all 250ms;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.course-card__favorite.active svg {
    color: #FF6B6B;
    fill: #FF6B6B;
    filter: drop-shadow(0 2px 4px rgba(255, 107, 107, 0.4));
}

.course-card__favorite:hover svg {
    color: #FF6B6B;
    filter: drop-shadow(0 2px 4px rgba(255, 107, 107, 0.3));
}