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

        body {
            font-family: Arial, sans-serif;
            background-color: #f5f5f5;
            padding: 20px;
        }

        .gallery-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        h1 {
            text-align: center;
            margin-bottom: 30px;
            color: #333;
        }

        .gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            grid-gap: 15px;
        }

        .gallery-item {
            position: relative;
            overflow: hidden;
            border-radius: 8px;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .gallery-item:hover {
            transform: scale(1.03);
        }

        .gallery-item img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        /* Lightbox */
        .lightbox {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .lightbox.active {
            display: flex;
            opacity: 1;
        }

        .lightbox-content {
            position: relative;
            max-width: 90%;
            max-height: 80%;
        }

        .lightbox-img {
            display: block;
            max-width: 100%;
            max-height: 80vh;
            border: 3px solid white;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
        }

        .close-lightbox {
            position: absolute;
            top: -40px;
            right: 0;
            color: white;
            font-size: 30px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .lightbox-caption {
            position: absolute;
            bottom: -40px;
            left: 0;
            width: 100%;
            color: white;
            text-align: center;
            padding: 10px;
            font-size: 16px;
        }

        .lightbox-nav {
            position: absolute;
            top: 50%;
            width: 100%;
            display: flex;
            justify-content: space-between;
            transform: translateY(-50%);
        }

        .prev, .next {
            background: rgba(255, 255, 255, 0.3);
            color: white;
            padding: 10px 15px;
            cursor: pointer;
            border: none;
            border-radius: 5px;
            font-size: 18px;
            transition: background 0.3s ease;
        }

        .prev:hover, .next:hover {
            background: rgba(255, 255, 255, 0.5);
        }

button[disabled]{
  pointer-events: none;
  opacity: 0.5;
}