:root {
    --primary: #03045e;
    --primary-dark: #0077B6;
    --primary-light: #48CAE4;
    --dark: #1a1a1a;
    --gray: #6c757d;
    --gray-light: #f8f9fa;
    --light: #CAF0F8;
    --white: #ffffff;
    --success: #10b981;
    --error: #ef4444;
    --gradient: linear-gradient(135deg, #03045e 0%, #0077b6 100%);
    --shadow: 0 10px 40px rgba(0, 168, 232, 0.15);
    --shadow-lg: 0 20px 60px rgba(0, 168, 232, 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ═══════════════════════════════════
   HERO
   ═══════════════════════════════════ */

.page-hero {
    padding: 60px 0 60px;
    background: linear-gradient(135deg, rgba(3, 4, 94, 0.95) 0%, rgba(0, 119, 182, 0.90) 100%),
                url('https://images.unsplash.com/photo-1492619375914-88005aa9e8fb?w=1920') center/cover fixed;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
                repeating-linear-gradient(45deg, transparent, transparent 60px, rgba(255, 255, 255, 0.03) 60px, rgba(255, 255, 255, 0.03) 120px);
    animation: patternMove 30s linear infinite;
}

@keyframes patternMove {
    0% { background-position: 0 0; }
    100% { background-position: 200px 200px; }
}

.page-hero .container {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    font-size: 14px;
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s;
    padding: 4px 8px;
    border-radius: 6px;
}

.breadcrumb a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.5);
}

.page-title {
    font-size: clamp(32px, 6vw, 54px);
    font-weight: 800;
    color: white;
    margin-bottom: 18px;
    line-height: 1.2;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -1px;
    animation: slideUp 0.8s ease-out 0.2s both;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-subtitle {
    font-size: clamp(16px, 3vw, 20px);
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: slideUp 0.8s ease-out 0.4s both;
}

/* ═══════════════════════════════════
   VIDEOS SECTION
   ═══════════════════════════════════ */

.videos-section {
    padding: 60px 0 80px;
    background: var(--gray-light);
}

/* ═══════════════════════════════════
   FILTERS
   ═══════════════════════════════════ */

.video-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
    justify-content: center;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    background: white;
    color: var(--gray);
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.filter-chip:hover {
    border-color: var(--chip-color, var(--primary));
    color: var(--chip-color, var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.filter-chip.active {
    background: var(--chip-color, var(--primary));
    color: white;
    border-color: var(--chip-color, var(--primary));
    box-shadow: 0 6px 20px rgba(3, 4, 94, 0.25);
}

.filter-chip.active .chip-count {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.chip-count {
    background: var(--gray-light);
    padding: 2px 10px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
}

/* ═══════════════════════════════════
   VIDEO GRID
   ═══════════════════════════════════ */

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.video-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: all 0.4s;
    border: 2px solid transparent;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 45px rgba(3, 4, 94, 0.15);
    border-color: var(--primary-light);
}

.video-card__thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.video-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s, opacity 0.3s;
}

.video-card:hover .video-card__thumb img {
    transform: scale(1.06);
    opacity: 0.85;
}

.video-card__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0d1b2a, #1b263b);
}

.video-card__placeholder i {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.2);
}

.video-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: rgba(3, 4, 94, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.4rem;
    transition: all 0.3s;
    box-shadow: 0 8px 30px rgba(3, 4, 94, 0.4);
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.video-card:hover .video-card__play {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--primary);
    box-shadow: 0 12px 40px rgba(3, 4, 94, 0.6);
}

.video-card__play i {
    margin-left: 4px;
}

.video-card__duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    backdrop-filter: blur(5px);
}

.video-card__badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    background: var(--badge-color);
    color: white;
}

.video-card__content {
    padding: 24px;
}

.video-card__title {
    font-size: 17px;
    font-weight: 700;
    color: var(--dark);
    margin: 0 0 10px;
    line-height: 1.4;
    letter-spacing: -0.3px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card__desc {
    font-size: 14px;
    color: var(--gray);
    margin: 0 0 14px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card__meta {
    font-size: 13px;
    color: #94a3b8;
    padding-top: 14px;
    border-top: 1px solid var(--gray-light);
}

.video-card__meta i {
    color: var(--primary-light);
    margin-right: 5px;
}

/* ═══════════════════════════════════
   VIDEO MODAL
   ═══════════════════════════════════ */

.video-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(3, 4, 94, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s;
    padding: 60px 20px;
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.video-modal__inner {
    width: 90vw;
    max-width: 1100px;
    position: relative;
    pointer-events: none;
}

.video-modal__close {
    position: absolute;
    top: -55px;
    right: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
    pointer-events: auto;
}

.video-modal__close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

.video-modal__player {
    aspect-ratio: 16/9;
    border-radius: 16px;
    overflow: hidden;
    background: #000;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    margin-bottom: 24px;
    pointer-events: auto;
}

.video-modal__player iframe {
    width: 100%;
    height: 100%;
    display: block;
}

.video-modal__info {
    text-align: center;
    color: white;
    padding: 0 20px;
    pointer-events: auto;
}

.video-modal__info h3 {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 10px;
    line-height: 1.3;
}

.video-modal__info p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
    line-height: 1.6;
}

/* ═══════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════ */

.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-state i {
    font-size: 4rem;
    color: #cbd5e1;
    margin-bottom: 20px;
    display: block;
}

.empty-state h3 {
    font-size: 1.4rem;
    color: #475569;
    margin: 0 0 10px;
}

.empty-state p {
    color: #94a3b8;
    margin-bottom: 20px;
}

/* ═══════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════ */

@media (max-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-hero {
        padding: 100px 0 60px;
    }

    .videos-section {
        padding: 40px 0 60px;
    }

    .video-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .video-modal__inner {
        width: 95vw;
    }

    .video-modal__close {
        top: -50px;
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }

    .video-modal__info h3 {
        font-size: 18px;
    }

    .video-modal__info p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .page-hero {
        padding: 80px 0 50px;
    }

    .video-modal {
        padding: 40px 15px;
    }

    .video-modal__close {
        top: -45px;
        width: 40px;
        height: 40px;
    }
}