/* ============================================
   Course Page Styles - Детальная карточка курса
   ============================================ */

/* ===== Breadcrumbs ===== */
.breadcrumbs {
    background-color: white;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-border);
}

.breadcrumbs__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    list-style: none;
    flex-wrap: wrap;
}

.breadcrumbs__list a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.breadcrumbs__separator {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.breadcrumbs__current {
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

/* ===== Course Page Layout ===== */
.course-page {
    background-color: var(--color-bg-light);
    padding: var(--spacing-4) 0 var(--spacing-8);
}

/* ===== Top Section: Gallery + Info ===== */
.course-top {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: var(--spacing-5);
    margin-bottom: var(--spacing-5);
}

/* ===== Left Column: Gallery + Sidebar Info ===== */
.course-left-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* ===== Course Gallery ===== */
.course-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.gallery-main {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background-color: #000;
}

.gallery-main__media {
    aspect-ratio: 16 / 9;
    width: 100%;
}

.gallery-video,
.gallery-image {
    width: 100%;
    height: 100%;
}

.video-placeholder {
    position: relative;
    width: 100%;
    height: 100%;
}

.video-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.video-play-btn svg {
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-normal);
}

.video-play-btn:hover svg {
    transform: scale(1.1);
}

.video-play-btn span {
    color: white;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* Gallery Badges */
.gallery-badges {
    position: absolute;
    top: var(--spacing-2);
    left: var(--spacing-2);
    display: flex;
    gap: var(--spacing-1);
    z-index: 10;
}

.gallery-badge {
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.gallery-badge--bestseller {
    background: rgba(245, 158, 11, 0.9);
    color: white;
}

.gallery-badge--updated {
    background: rgba(16, 185, 129, 0.9);
    color: white;
}

/* Gallery Thumbnails */
.gallery-thumbs {
    display: flex;
    gap: var(--spacing-1-5);
    overflow-x: auto;
    padding: var(--spacing-1) 0;
}

.gallery-thumbs::-webkit-scrollbar {
    height: 4px;
}

.gallery-thumbs::-webkit-scrollbar-track {
    background: transparent;
}

.gallery-thumbs::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.gallery-thumb {
    position: relative;
    flex-shrink: 0;
    width: 100px;
    height: 56px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: none;
    padding: 0;
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-thumb:hover {
    border-color: var(--color-primary);
    opacity: 0.9;
}

.gallery-thumb.active {
    border-color: var(--color-primary);
}

.thumb-video-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 28px;
    height: 28px;
    background: rgba(0, 91, 255, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumb-video-icon svg {
    width: 12px;
    height: 12px;
}

/* ===== Course Sidebar Info (Below Gallery) ===== */
.course-sidebar-info {
    background-color: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.course-sidebar-info .course-author {
    margin-bottom: 0;
    padding-bottom: var(--spacing-3);
}

.course-sidebar-info .course-meta-tags {
    margin-bottom: 0;
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--color-border);
}

.course-sidebar-info .course-guarantees {
    margin-top: 0;
}

/* ===== Course Info (Right Column) ===== */
.course-info {
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    border: 1px solid var(--color-border);
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-3));
    height: fit-content;
}

.course-info__header {
    margin-bottom: var(--spacing-3);
}

.course-info__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-info__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-1-5);
}

.course-info__subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

/* Course Rating & Stats */
.course-info__stats {
    margin-bottom: var(--spacing-3);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--color-border);
}

.course-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-1-5);
}

.rating-stars {
    display: flex;
    gap: 2px;
}

.rating-stars .star {
    width: 16px;
    height: 16px;
    color: var(--color-warning);
}

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

.rating-score {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.rating-count {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

.rating-count:hover {
    text-decoration: underline;
}

.course-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.stat-item svg {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
}

/* Course Author */
.course-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--color-border);
}

.course-author__avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.course-author__info {
    display: flex;
    flex-direction: column;
}

.course-author__label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.course-author__name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

.course-author__name:hover {
    text-decoration: underline;
}

.course-author__role {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* Course Meta Tags */
.course-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-3);
}

.meta-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background-color: var(--color-bg-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.meta-tag svg {
    width: 14px;
    height: 14px;
    color: var(--color-primary);
}

/* Course Purchase Block */
.course-purchase {
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.course-price {
    margin-bottom: var(--spacing-3);
}

.price-main {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-1-5);
    margin-bottom: var(--spacing-1);
}

.price-current {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: #000000; /* Черный по умолчанию */
}

.price-old {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    text-decoration: line-through;
}

/* Красный цвет только если есть скидка (присутствует старая цена) */
.price-main:has(.price-old) .price-current {
    color: var(--color-error);
}

.price-discount {
    padding: 4px 10px;
    background-color: var(--color-error);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
}

.price-timer {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

.price-timer svg {
    width: 16px;
    height: 16px;
}

.course-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1-5);
    margin-bottom: var(--spacing-2);
}

.btn--large {
    padding: 16px 24px;
    font-size: var(--font-size-base);
}

.btn--large svg {
    margin-right: var(--spacing-1);
}

.favorite-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    margin-top: var(--spacing-2);
}

.favorite-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.favorite-btn:hover {
    border-color: var(--color-error);
    color: var(--color-error);
}

.favorite-btn.active {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: var(--color-error);
    color: var(--color-error);
}

.favorite-btn.active svg {
    fill: var(--color-error);
}

/* Course Guarantees */
.course-guarantees {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1-5);
    margin-top: var(--spacing-2);
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.guarantee-item svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* ===== Course Includes ===== */
.course-includes {
    background-color: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-5);
    border: 1px solid var(--color-border);
}

.course-includes__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-3);
}

.course-includes__grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-2);
}

.include-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: var(--spacing-1-5);
    padding: var(--spacing-3) var(--spacing-2);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    min-height: 100px;
}

.include-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.include-item span {
    line-height: 1.3;
}

/* ===== Course Tabs ===== */
.course-tabs {
    background-color: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs-header::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex-shrink: 0;
    padding: var(--spacing-2-5) var(--spacing-4);
    background: none;
    border: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

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

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

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: var(--radius-full) var(--radius-full) 0 0;
}

.tab-count {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--color-bg-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    margin-left: 4px;
}

.tabs-content {
    padding: var(--spacing-4);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Tab: Description ===== */
.description-content h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-2);
}

.description-content h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-4);
    margin-bottom: var(--spacing-2);
}

.description-content p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2);
}

.learn-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.learn-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-1-5);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.learn-list li svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

.audience-list,
.requirements-list {
    list-style: disc;
    padding-left: var(--spacing-3);
    color: var(--color-text-secondary);
}

.audience-list li,
.requirements-list li {
    margin-bottom: var(--spacing-1);
}

/* ===== Tab: Program ===== */
.program-summary {
    display: flex;
    gap: var(--spacing-4);
    padding: var(--spacing-3);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
}

.program-summary span {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.program-section {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2);
    overflow: hidden;
}

.program-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-3);
    background-color: white;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.program-section__header:hover {
    background-color: var(--color-bg-light);
}

.section-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.section-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
}

.section-title h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: 2px;
    text-align: left;
}

.section-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.toggle-icon {
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
    transition: transform var(--transition-fast);
}

.program-section__header[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

.program-section__content {
    padding: 0 var(--spacing-3) var(--spacing-3);
    background-color: var(--color-bg-light);
}

.program-section__content.collapsed {
    display: none;
}

.lessons-list {
    list-style: none;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2);
    background-color: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-1);
}

.lesson-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.lesson-icon svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-secondary);
}

.lesson-title {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.lesson-badge {
    padding: 4px 8px;
    background-color: var(--color-success);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.lesson-duration {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    flex-shrink: 0;
}

.show-all-sections {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-1);
    width: 100%;
    padding: var(--spacing-2);
    background: none;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.show-all-sections:hover {
    background-color: var(--color-primary-light);
    border-style: solid;
}

.show-all-sections svg {
    width: 16px;
    height: 16px;
}

/* ===== Tab: Reviews ===== */
.reviews-summary {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-6);
    padding: var(--spacing-4);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
}

.reviews-overall {
    text-align: center;
}

.overall-score {
    display: block;
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1;
}

.overall-stars {
    display: flex;
    justify-content: center;
    gap: 2px;
    margin: var(--spacing-1) 0;
}

.overall-stars .star {
    width: 20px;
    height: 20px;
    color: var(--color-warning);
    fill: var(--color-warning);
}

.overall-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.reviews-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    justify-content: center;
}

.breakdown-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breakdown-stars {
    width: 16px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: right;
}

.breakdown-bar {
    flex: 1;
    height: 8px;
    background-color: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.breakdown-fill {
    height: 100%;
    background-color: var(--color-warning);
    border-radius: var(--radius-full);
}

.breakdown-percent {
    width: 40px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.review-card {
    padding: var(--spacing-3);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
}

.review-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.review-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.review-user {
    flex: 1;
}

.review-name {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.review-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.review-rating {
    display: flex;
    gap: 2px;
}

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

.review-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    margin-bottom: var(--spacing-2);
}

.review-helpful {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.helpful-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.helpful-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.helpful-btn svg {
    width: 14px;
    height: 14px;
}

.load-more-reviews {
    display: block;
    width: 100%;
    padding: var(--spacing-2);
    margin-top: var(--spacing-3);
    background: none;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.load-more-reviews:hover {
    background-color: var(--color-primary-light);
    border-style: solid;
}

/* ===== Tab: Author ===== */
.author-card {
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
}

.author-main {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.author-avatar-large {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.author-details {
    flex: 1;
}

.author-name-large {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.author-title {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.author-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.author-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.author-stats svg {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
}

.author-bio {
    margin-bottom: var(--spacing-4);
}

.author-bio p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2);
}

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

.author-social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 10px 16px;
    background-color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.author-social-link:hover {
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.author-social-link svg {
    width: 18px;
    height: 18px;
}

/* ===== Tab: FAQ ===== */
.faq-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-3);
    background-color: white;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    text-align: left;
}

.faq-question:hover {
    background-color: var(--color-bg-light);
}

.faq-question span {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.faq-question[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-3) var(--spacing-3);
    background-color: var(--color-bg-light);
}

.faq-answer.collapsed {
    display: none;
}

.faq-answer p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

/* ===== Tab: Delivery ===== */
.delivery-page {
    padding-top: var(--spacing-6);
}

.delivery-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    max-width: 800px;
    margin: 0 auto;
}

.delivery-content > h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-3);
}

.delivery-content__subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-6);
}

.delivery-content h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-4);
}

.delivery-content > p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.delivery-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-top: var(--spacing-2);
}

.delivery-step {
    display: flex;
    gap: var(--spacing-3);
    align-items: flex-start;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-1);
}

.step-content p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.delivery-info-box {
    background-color: #f8f9fa;
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
}

.delivery-info-box h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-3);
}

.delivery-info-box ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.delivery-info-box li {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    padding-left: var(--spacing-4);
    position: relative;
}

.delivery-info-box li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}

.delivery-support {
    background-color: white;
    border: 1px solid var(--color-border);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    text-align: center;
}

.delivery-support h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.delivery-support p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-3);
}

/* ===== Tab: Curriculum (Программа курса) ===== */
.curriculum-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.curriculum-content h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.curriculum-summary {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.curriculum-modules {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.curriculum-module {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.module-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-bg-secondary);
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.module-header:hover {
    background: var(--color-border);
}

.module-number {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    min-width: 32px;
}

.module-info {
    flex: 1;
    text-align: left;
}

.module-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.module-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.module-toggle {
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.module-header[aria-expanded="true"] .module-toggle {
    transform: rotate(180deg);
}

.module-lessons {
    padding: var(--spacing-2) var(--spacing-4) var(--spacing-3);
    border-top: 1px solid var(--color-border);
}

.module-lessons.collapsed {
    display: none;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.lesson-item:last-child {
    border-bottom: none;
}

.lesson-item svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.lesson-title {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.lesson-duration {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

/* ===== Tab: Contact Author (Написать автору) ===== */
.contact-author-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.contact-author-header h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-1);
}

.contact-author-header p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.contact-author-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-text-secondary);
}

.status-dot--active {
    background: var(--color-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.contact-author-messages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.message-item {
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.message-item--answer {
    background: var(--color-bg-secondary);
    margin-left: var(--spacing-4);
}

.message-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.message-user {
    display: flex;
    flex-direction: column;
}

.message-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.message-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    background: rgba(0, 91, 255, 0.1);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    margin-left: 4px;
}

.message-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.message-body p {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    line-height: var(--line-height-relaxed);
}

.contact-author-form {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-4);
}

.contact-author-form h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.question-form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-2);
    gap: var(--spacing-2);
}

.question-form-note {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* ===== Author Showcase ===== */
.author-showcase {
    margin-top: var(--spacing-6);
    padding: var(--spacing-5);
    background-color: white;
    border-radius: var(--radius-xl);
}

.author-showcase__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.author-showcase__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.author-showcase__link {
    font-size: var(--font-size-base);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.author-showcase__link:hover {
    color: var(--color-primary-dark);
}

.author-showcase__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-4);
}

/* ===== Course Card ===== */
.course-card {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    cursor: pointer;
}

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

.course-card__image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.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(1.05);
}

.course-card__badges {
    position: absolute;
    top: var(--spacing-2);
    left: var(--spacing-2);
    display: flex;
    gap: var(--spacing-1);
}

.badge {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge--popular {
    background-color: #ff6b6b;
    color: white;
}

.badge--new {
    background-color: var(--color-success);
    color: white;
}

.badge--bestseller {
    background-color: #ffd700;
    color: #333;
}

.badge--updated {
    background-color: var(--color-primary);
    color: white;
}

.course-card__content {
    padding: var(--spacing-3);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

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

.course-card__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.course-card__author img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.course-card__author span {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.course-card__meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.course-card__rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.course-card__rating .star {
    width: 14px;
    height: 14px;
    fill: #ffd700;
}

.course-card__rating span {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.course-card__reviews {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.course-card__stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.course-card__footer {
    margin-top: auto;
    padding-top: var(--spacing-2);
    border-top: 1px solid var(--color-border);
}

.course-card__price {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

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

.course-card__price .price-old {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    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);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .course-top {
        grid-template-columns: 1fr;
        overflow: hidden;
    }

    .course-left-column,
    .course-info {
        min-width: 0;
    }

    .course-info {
        position: static;
    }

    .course-includes__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .reviews-summary {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .reviews-breakdown {
        max-width: 400px;
        margin: 0 auto;
    }

    .author-showcase__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .course-info__title {
        font-size: var(--font-size-lg);
        word-break: break-word;
        overflow-wrap: break-word;
    }

    .author-showcase__header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-1);
    }

    .price-current {
        font-size: var(--font-size-2xl);
    }

    .tabs-header {
        justify-content: flex-start;
    }

    .tab-btn {
        padding: var(--spacing-2) var(--spacing-2-5);
        font-size: var(--font-size-sm);
    }

    .learn-list {
        grid-template-columns: 1fr;
    }

    .author-main {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .author-stats {
        justify-content: center;
    }

    .author-social {
        flex-wrap: wrap;
        justify-content: center;
    }

    .message-item--answer {
        margin-left: var(--spacing-2);
    }

    .question-form-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .question-form-note {
        text-align: center;
    }

    .program-summary {
        flex-direction: column;
        gap: var(--spacing-1);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .course-page {
        padding: var(--spacing-2) 0 var(--spacing-4);
    }

    .course-info,
    .course-includes,
    .course-tabs {
        border-radius: var(--radius-lg);
    }

    .gallery-main {
        border-radius: var(--radius-lg);
    }

    .gallery-thumb {
        width: 80px;
        height: 45px;
    }

    .course-includes__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .include-item {
        min-height: 80px;
        padding: var(--spacing-2);
    }

    .author-showcase__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }
}