:root {
            --primary-color: #2d3436;
            --accent-color: #0984e3;
            --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            --skeleton-bg: #e1e4e8;
        }

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

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-gradient);
            min-height: 100vh;
            color: var(--primary-color);
            overflow-x: hidden;
        }
        header {
            text-align: center;
            padding: 80px 20px;
            animation: fadeInDown 1s ease;
        }

        header h1 {
            font-size: 2.5rem;
            letter-spacing: 5px;
            text-transform: uppercase;
            margin-bottom: 10px;
            font-weight: 300;
        }

        header .divider {
            width: 50px;
            height: 3px;
            background: var(--accent-color);
            margin: 20px auto;
        }
        .gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            grid-auto-rows: 250px;
            grid-gap: 20px;
            padding: 20px;
            max-width: 1400px;
            margin: 0 auto;
        }
        .gallery-item {
            position: relative;
            overflow: hidden;
            border-radius: 12px;
            cursor: pointer;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            background-color: var(--skeleton-bg); 
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }
        .gallery-item.loading::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            animation: skeleton-scan 1.5s infinite;
        }

        @keyframes skeleton-scan {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        }

        .gallery-item.tall { grid-row: span 2; }
        .gallery-item.wide { grid-column: span 2; }
        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0; 
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .gallery-item img.loaded {
            opacity: 1;
        }
        .gallery-item .overlay {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            backdrop-filter: blur(3px);
            transition: opacity 0.4s ease;
            z-index: 2;
        }

        .gallery-item .overlay span {
            color: white;
            border: 1px solid white;
            padding: 10px 20px;
            text-transform: uppercase;
            letter-spacing: 2px;
            transform: translateY(20px);
            transition: transform 0.4s ease;
        }

        .gallery-item:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.2); }
        .gallery-item:hover img.loaded { transform: scale(1.08); }
        .gallery-item:hover .overlay { opacity: 1; }
        .gallery-item:hover .overlay span { transform: translateY(0); }
        #lightbox {
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(0,0,0,0.95);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 2000;
            cursor: zoom-out;
        }

        #lightbox img {
            max-width: 90%;
            max-height: 85%;
            border-radius: 4px;
            box-shadow: 0 0 40px rgba(0,0,0,0.5);
            animation: zoomIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        @keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @keyframes zoomIn {
            from { transform: scale(0.9); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }

        @media (max-width: 768px) {
            .gallery { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; }
            .gallery-item.wide { grid-column: span 1; }
            header h1 { font-size: 1.8rem; padding: 40px 10px 10px; }
        }