* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }

        body {
            background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.95);
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
        }

        h1 {
            text-align: center;
            color: #2c3e50;
            margin-bottom: 30px;
            font-size: 2.5em;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .input-group {
            display: flex;
            gap: 10px;
            margin-bottom: 30px;
        }

        input[type="text"] {
            flex: 1;
            padding: 15px;
            border: 2px solid #4ecdc4;
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.3s ease;
        }

        input[type="text"]:focus {
            border-color: #ff6b6b;
        }

        button {
            padding: 15px 30px;
            background: #4ecdc4;
            border: none;
            border-radius: 8px;
            color: white;
            font-size: 16px;
            cursor: pointer;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        button:hover {
            background: #45b7b0;
            transform: translateY(-2px);
        }

        .thumbnail-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .thumbnail-item {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }

        .thumbnail-item:hover {
            transform: translateY(-5px);
        }

        .thumbnail-image {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-bottom: 3px solid #4ecdc4;
        }

        .thumbnail-info {
            padding: 15px;
            text-align: center;
        }

        .download-btn {
            display: inline-block;
            padding: 8px 15px;
            background: #ff6b6b;
            color: white;
            text-decoration: none;
            border-radius: 5px;
            font-size: 14px;
            transition: background 0.3s ease;
        }

        .download-btn:hover {
            background: #ff5252;
        }

        .error {
            color: #ff6b6b;
            text-align: center;
            margin-top: 20px;
            display: none;
        }