:root {
            --bg-color: #F9FAFB; --card-bg: #FFFFFF; --text-primary: #1F2937; --text-secondary: #6B7280;
            --accent-color: #10B981; --accent-hover: #059669; --border-color: #E5E7EB; --shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
        }
        *, *:before, *:after { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Plus Jakarta Sans', sans-serif; background-color: var(--bg-color); color: var(--text-primary);
            -webkit-font-smoothing: antialiased; line-height: 1.5;
        }
        .container { max-width: 1600px; margin: 0 auto; padding: 0 2rem; }

        /* Header */
        .site-header {
            position: sticky; top: 1.5rem; z-index: 1000; margin: 1.5rem 1rem 0;
            padding: 0 1.5rem; height: 64px; max-width: 1200px;
            background: rgba(255, 255, 255, 0.7); backdrop-filter: blur(10px);
            border: 1px solid var(--border-color); border-radius: 99px;
            display: flex; align-items: center; justify-content: space-between; gap: 1rem;
            box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
            margin-left: auto; margin-right: auto;
        }
        .logo { font-size: 1.5rem; font-weight: 700; text-decoration: none; color: var(--text-primary); white-space: nowrap; }
        .logo span { color: var(--accent-color); }
        .search-form { flex-grow: 1; max-width: 500px; position: relative; }
        .search-input {
            width: 100%; height: 40px; border-radius: 99px; padding: 0 2.5rem 0 1.25rem;
            border: 1px solid var(--border-color); background-color: var(--bg-color); font-size: 0.9rem;
        }
        .search-input::placeholder { 
            color: var(--text-secondary); 
            font-size: 0.85rem;
        }
        .search-input:focus { outline: 2px solid var(--accent-color); }
        .search-btn {
            position: absolute; right: 4px; top: 4px; height: 32px; width: 32px;
            background: var(--accent-color); color: white; border: none; border-radius: 50%;
            cursor: pointer; display: grid; place-items: center;
        }
        .search-btn:hover { background: var(--accent-hover); }

        .main-nav a {
            text-decoration: none; font-weight: 500; font-size: 0.9rem; color: var(--text-secondary);
            padding: 0.5rem 1rem; border-radius: 99px; transition: all 0.2s ease;
        }
        .main-nav a:hover { color: var(--text-primary); background-color: #F3F4F6; }
        .main-nav a.active { color: var(--accent-color); font-weight: 600; background-color: #ECFDF5; }
        
        /* Main Content */
        .main-content { padding-top: 3rem; }
        .page-header { text-align: center; margin-bottom: 3rem; }
        .page-title { font-size: 2.25rem; font-weight: 700; }
        .page-subtitle { font-size: 1.125rem; color: var(--text-secondary); margin-top: 0.5rem; }

        /* Grid Layout */
        .video-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .video-card {
            background: var(--card-bg); border-radius: 0.75rem;
            overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border-color);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .video-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        }
        .video-thumbnail {
            position: relative; 
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #F3F4F6; 
            display: block;
        }
        .thumbnail-img, .video-preview {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .video-preview { 
            opacity: 0;
            z-index: 1;
            transition: opacity 0.2s ease;
        }
        .video-preview.active { 
            opacity: 1;
        }
        
        /* Thumbnail Overlays */
        .thumbnail-badges {
            position: absolute; top: 8px; left: 8px; right: 8px;
            display: flex; justify-content: space-between; align-items: flex-start;
            pointer-events: none; z-index: 2;
        }
        .badge {
            background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(4px);
            color: white; padding: 4px 8px; border-radius: 6px;
            font-size: 0.75rem; font-weight: 600;
        }
        .badge-platform { background: rgba(16, 185, 129, 0.9); }
        .badge-hd {
            position: absolute; bottom: 8px; right: 8px;
            background: #EF4444; color: white; padding: 2px 6px;
            border-radius: 4px; font-size: 0.7rem; font-weight: 700;
            z-index: 2;
        }
        .play-overlay {
            position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
            width: 48px; height: 48px; background: rgba(255, 255, 255, 0.9);
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            opacity: 0; transition: opacity 0.2s ease; pointer-events: none; z-index: 2;
        }
        .video-card:hover .play-overlay { opacity: 1; }
        .play-overlay::before {
            content: '▶'; color: var(--text-primary); font-size: 1.2rem; margin-left: 3px;
        }

        /* Card Content */
        .card-content { padding: 0.75rem 1rem; }
        .card-title {
            font-size: 0.95rem; font-weight: 600; color: var(--text-primary);
            margin-bottom: 0.5rem; line-height: 1.3;
            overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2;
            -webkit-box-orient: vertical; text-overflow: ellipsis;
        }
        .card-info {
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.85rem; color: var(--text-secondary);
        }
        .info-model a { 
            color: var(--text-primary); font-weight: 500; text-decoration: none;
            transition: color 0.2s ease;
        }
        .info-model a:hover { color: var(--accent-color); }
        .info-stats {
            display: flex; gap: 0.75rem; align-items: center;
        }

        /* Empty State & Pagination */
        .empty-state { text-align: center; padding: 4rem 1rem; }
        .pagination { 
            text-align: center; 
            margin-top: 3rem;
            margin-bottom: 2rem;
        }
        .page-btn {
            display: inline-block; padding: 0.75rem 1.5rem; margin: 0 0.25rem;
            border-radius: 99px; background-color: var(--card-bg); border: 1px solid var(--border-color);
            text-decoration: none; color: var(--text-primary); font-weight: 500;
            transition: all 0.2s ease;
        }
        .page-btn:hover { background-color: var(--accent-color); color: white; border-color: var(--accent-color); }
        .page-btn.active { background-color: var(--accent-color); color: white; border-color: var(--accent-color); }
        
        /* Footer */
        .site-footer { 
            text-align: center; 
            padding: 2rem 0 3rem;
            font-size: 0.875rem; 
            color: var(--text-secondary);
            margin-top: 3rem;
            border-top: 1px solid var(--border-color);
        }
        .footer-links {
            margin-bottom: 1.5rem;
        }
        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            margin: 0 1rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--text-primary);
        }

        /* Responsive */
        @media (max-width: 1200px) { 
            .video-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 992px) { 
            .video-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .main-nav { display: none; }
            .site-header { margin: 1rem 0.75rem 0; }
        }
        @media (max-width: 768px) {
            .container { padding: 0 1rem; }
            .site-header { 
                margin: 1rem 0.5rem 0;
                padding: 0 1rem;
                height: 56px;
            }
            .logo { font-size: 1.25rem; }
            .search-input { font-size: 0.85rem; height: 36px; }
            .search-btn { height: 28px; width: 28px; right: 4px; top: 4px; }
            .video-grid { 
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .play-overlay {
                width: 56px; 
                height: 56px;
            }
            .play-overlay::before {
                font-size: 1.4rem;
            }
            .page-title { font-size: 1.75rem; }
            .page-subtitle { font-size: 1rem; }
            .pagination {
                display: flex;
                justify-content: center;
                flex-wrap: wrap;
                gap: 0.25rem;
            }
            .page-btn {
                padding: 0.5rem 0.75rem;
                font-size: 0.875rem;
                margin: 0;
            }
            .site-footer {
                padding-top: 2rem;
            }
            .footer-links {
                margin-bottom: 1rem;
                line-height: 1.8;
            }
            .footer-links a {
                margin: 0 0.5rem;
                font-size: 0.8rem;
                display: inline-block;
                padding: 0.25rem 0;
            }
        }
        @media (max-width: 480px) {
            .video-grid { 
                grid-template-columns: 1fr;
                gap: 0.75rem;
            }
            .card-content { padding: 0.5rem 0.75rem; }
            .card-title { font-size: 0.85rem; }
            .card-info { font-size: 0.75rem; }
        }
        
        @media (max-width: 768px) {
            .page-title { 
                margin-top:40px;
            }}