/* ========================================
   VNU Hospital Portal - News & Video Page Styles
   ======================================== */

/* ========================================
   Category Navigation Tabs (Sticky)
   ======================================== */
.news-video-nav {
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 90;
    transition: all 0.3s ease;
}

.news-video-nav.sticky {
    position: fixed;
    left: 0;
    right: 0;
    box-shadow: var(--shadow-md);
    z-index: 99;
}

.category-nav-tabs {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.category-nav-tabs::-webkit-scrollbar {
    display: none;
}

.category-nav-tab {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    white-space: nowrap;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.category-nav-tab i {
    font-size: var(--text-base);
}

.category-nav-tab:hover {
    color: var(--color-primary);
    background: var(--color-bg-soft);
    border-color: var(--color-border-light);
}

.category-nav-tab.active {
    color: var(--color-text-white);
    background: var(--color-primary);
    border-color: var(--color-primary);
}

/* ========================================
   Category Section
   ======================================== */
.news-category-section {
    padding: var(--space-12) 0;
}

.news-category-section.alt-bg {
    background: var(--color-bg-secondary);
}

.category-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-3);
    border-bottom: 3px solid var(--color-primary);
}

.category-section-header h2 {
    font-size: var(--text-2xl);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.category-section-header h2 i {
    color: var(--color-primary);
}

/* ========================================
   Category Featured Card
   ======================================== */
.category-featured {
    margin-bottom: var(--space-8);
}

.category-featured-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    background: var(--color-bg-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    text-decoration: none;
}

.category-featured-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.category-featured-img {
    position: relative;
    height: 320px;
    overflow: hidden;
}

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

.category-featured-card:hover .category-featured-img img {
    transform: scale(1.05);
}

.news-label {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    padding: var(--space-1) var(--space-4);
    background: var(--color-primary);
    color: var(--color-text-white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-label.school {
    background: #2196F3;
}

.category-featured-body {
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.category-featured-body h3 {
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
    line-height: var(--leading-snug);
}

.category-featured-body p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-date {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.news-date i {
    color: var(--color-primary);
}

/* ========================================
   Category Card Grid
   ======================================== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.category-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

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

.category-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.category-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.category-card-img {
    position: relative;
    height: 180px;
    overflow: hidden;
}

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

.category-card:hover .category-card-img img {
    transform: scale(1.08);
}

.category-card-body {
    padding: var(--space-5);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.category-card-body h4 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    line-height: var(--leading-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.category-card-body p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: var(--leading-relaxed);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

/* ========================================
   Video Section
   ======================================== */
.video-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: var(--space-6);
    align-items: start;
}

.video-main {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9 */
    background: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-info {
    padding: var(--space-5) var(--space-6);
}

.video-info h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
    line-height: var(--leading-snug);
}

.video-meta {
    display: flex;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.video-meta i {
    margin-right: var(--space-1);
}

/* Video Sidebar */
.video-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.video-sidebar-item {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: var(--space-4);
    text-decoration: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

.video-sidebar-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.video-thumb {
    position: relative;
    height: 90px;
    overflow: hidden;
}

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

.video-sidebar-item:hover .video-thumb img {
    transform: scale(1.05);
}

.video-duration {
    position: absolute;
    bottom: var(--space-2);
    right: var(--space-2);
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-text-white);
    font-size: 11px;
    font-weight: var(--font-medium);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 4px;
}

.video-duration i {
    font-size: 9px;
}

.video-sidebar-info {
    padding: var(--space-3) var(--space-3) var(--space-3) 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.video-sidebar-info h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    line-height: var(--leading-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-views {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.video-views i {
    margin-right: 4px;
}

/* ========================================
   Expert Section
   ======================================== */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.expert-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    position: relative;
}

.expert-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.expert-avatar {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.expert-avatar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, var(--color-bg-primary), transparent);
}

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

.expert-card:hover .expert-avatar img {
    transform: scale(1.05);
}

.expert-body {
    padding: var(--space-5) var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.expert-info {
    margin-bottom: var(--space-3);
}

.expert-info h4 {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    margin-bottom: 2px;
}

.expert-title {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: var(--font-medium);
}

.expert-body h3 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
    line-height: var(--leading-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.expert-body > p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-3);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.expert-body > .news-date {
    margin-bottom: 0;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1023px) {
    .category-featured-card {
        grid-template-columns: 1fr;
    }

    .category-featured-img {
        height: 250px;
    }

    .category-grid,
    .category-grid-3,
    .category-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .video-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .news-category-section {
        padding: var(--space-8) 0;
    }

    .category-grid,
    .category-grid-3,
    .category-grid-4 {
        grid-template-columns: 1fr;
    }

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

    .video-sidebar {
        grid-template-columns: 1fr;
    }

    .video-sidebar-item {
        grid-template-columns: 140px 1fr;
    }

    .category-section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .category-nav-tabs {
        gap: var(--space-1);
    }

    .category-nav-tab {
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-xs);
    }

    .category-nav-tab span {
        display: none;
    }

    .category-nav-tab i {
        font-size: var(--text-lg);
    }

    .expert-avatar {
        height: 160px;
    }
}