.hacktube-header {
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-xl);
}

.hacktube-header__title {
    font-size: 1.8rem;
    color: var(--color-green);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.hacktube-header__title::before {
    content: '> ';
    color: var(--color-green-dim);
}

.hacktube-header__desc {
    color: var(--color-gray);
    font-size: 0.85rem;
    margin-top: var(--space-xs);
}

.category-carousel {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.category-carousel__arrow {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-alt);
    color: var(--color-gray);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.category-carousel__arrow:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-green);
    border-color: var(--color-green-dim);
    animation: category-carousel-pulse 0.8s ease-in-out infinite;
}

.category-carousel__arrow[hidden] {
    display: none;
}

@keyframes category-carousel-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.14); }
}

@media (prefers-reduced-motion: reduce) {
    .category-carousel__arrow:hover {
        animation: none;
    }
}

@media (max-width: 640px) {
    .category-carousel__arrow {
        width: 28px;
        height: 28px;
    }
}

.category-chips {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    padding: var(--space-md) 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
    margin-bottom: 0;
    flex: 1;
    min-width: 0;
}

.category-chips::-webkit-scrollbar {
    display: none;
}

.category-chip {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    padding: var(--space-xs) var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    background-color: var(--color-bg-alt);
    color: var(--color-gray);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.category-chip:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-green);
    border-color: var(--color-green-dim);
}

.category-chip.active,
.category-chip:active {
    background-color: var(--color-green);
    color: var(--color-bg);
    border-color: var(--color-green);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-xl) var(--space-lg);
}

.video-card {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.video-card:hover {
    transform: translateY(-2px);
}

.video-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.video-card__thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-bg-alt);
    margin-bottom: var(--space-sm);
}

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

.video-card:hover .video-card__thumb img {
    transform: scale(1.05);
}

.video-card__thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
    color: var(--color-green);
    font-size: 2.5rem;
    opacity: 0.6;
}

.video-card__play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.35);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.video-card:hover .video-card__play-overlay {
    opacity: 1;
}

.video-card__play-btn {
    width: 52px;
    height: 52px;
    background-color: var(--color-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(0, 255, 65, 0.35);
}

.video-card__play-btn::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-left: 16px solid var(--color-bg);
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    margin-left: 4px;
}

.video-card__duration {
    position: absolute;
    bottom: var(--space-xs);
    right: var(--space-xs);
    background-color: rgba(0, 0, 0, 0.85);
    color: var(--color-white);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.1em 0.4em;
    border-radius: var(--radius-sm);
    letter-spacing: 0.03em;
}

.video-card__source-badge {
    position: absolute;
    top: var(--space-xs);
    left: var(--space-xs);
    background-color: var(--color-red);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    padding: 0.1em 0.4em;
    border-radius: var(--radius-sm);
    letter-spacing: 0.03em;
}

.video-card__info {
    display: flex;
    gap: var(--space-sm);
}

.video-card__avatar {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-green-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-green);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    overflow: hidden;
}

.video-card__text {
    flex: 1;
    min-width: 0;
}

.video-card__title {
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-mono);
    line-height: 1.4;
    color: var(--color-white);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 2px;
}

.video-card__title a {
    color: inherit;
    text-decoration: none;
}

.video-card:hover .video-card__title a {
    color: var(--color-green);
}

.video-card__meta {
    font-size: 0.75rem;
    color: var(--color-gray-dark);
    line-height: 1.5;
}

.video-card__meta a {
    color: var(--color-gray-dark);
    text-decoration: none;
}

.video-card__meta a:hover {
    color: var(--color-gray);
}

.video-card__category {
    display: inline-block;
    font-size: 0.65rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-blue);
    margin-top: 2px;
}

.video-detail {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg);
}

.video-detail__layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 1024px) {
    .video-detail__layout {
        grid-template-columns: 1fr 400px;
    }
}

.video-detail__main {
    min-width: 0;
}

.video-detail__sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.video-player {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.video-player iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-meta {
    margin-bottom: var(--space-md);
}

.video-meta__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-white);
    margin: 0 0 var(--space-sm);
    line-height: 1.4;
}

.video-meta__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.video-meta__stats {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.8rem;
    color: var(--color-gray);
}

.video-meta__stats span + span::before {
    content: '•';
    margin-right: var(--space-md);
}

.video-meta__actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.video-meta__action {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-gray);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.video-meta__action:hover {
    color: var(--color-green);
    border-color: var(--color-green-dim);
}

.video-desc {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.video-desc__text {
    font-size: 0.9rem;
    color: var(--color-white);
    line-height: 1.7;
    max-height: 100px;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    position: relative;
}

.video-desc__text.expanded {
    max-height: none;
}

.video-desc__text:not(.expanded)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(transparent, var(--color-bg));
    pointer-events: none;
}

.video-desc__toggle {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs) 0;
    margin-top: var(--space-xs);
    transition: color var(--transition-fast);
}

.video-desc__toggle:hover {
    color: var(--color-green);
}

.video-comments {
    margin-top: var(--space-xl);
}

.related-video {
    display: flex;
    gap: var(--space-sm);
    text-decoration: none;
    color: inherit;
    padding: var(--space-xs) 0;
    transition: background-color var(--transition-fast);
    border-radius: var(--radius-sm);
}

.related-video:hover {
    background-color: var(--color-bg-hover);
}

.related-video__thumb {
    position: relative;
    flex-shrink: 0;
    width: 168px;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

.related-video__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-video__duration {
    position: absolute;
    bottom: 2px;
    right: 2px;
    background-color: rgba(0, 0, 0, 0.85);
    color: var(--color-white);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 0.1em 0.3em;
    border-radius: var(--radius-sm);
}

.related-video__text {
    flex: 1;
    min-width: 0;
}

.related-video__title {
    font-size: 0.8rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-white);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 2px;
}

.related-video:hover .related-video__title {
    color: var(--color-green);
}

.related-video__meta {
    font-size: 0.7rem;
    color: var(--color-gray-dark);
}

.related-video__channel {
    font-size: 0.7rem;
    color: var(--color-gray);
}

.related-sidebar__title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
}

.related-sidebar__title::before {
    content: '> ';
    color: var(--color-green-dim);
}

@media (max-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: var(--space-lg);
    }

    .related-video__thumb {
        width: 140px;
    }
}

@media (max-width: 640px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

    .related-video__thumb {
        width: 120px;
    }

    .video-meta__row {
        flex-direction: column;
        align-items: flex-start;
    }

    .video-meta__actions {
        flex-wrap: wrap;
    }

    .category-chips {
        padding: var(--space-sm) 0;
    }

    .hacktube-header {
        padding: var(--space-lg) 0 var(--space-md);
    }
}

.hacktube-page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg) var(--space-3xl);
}

.hacktube-empty {
    text-align: center;
    padding: var(--space-3xl) 0;
    color: var(--color-gray);
    font-size: 1.1rem;
    font-family: var(--font-mono);
}