body {
            margin: 0;
            padding: 0;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            font-family: 'Arial', sans-serif;
            overflow: hidden;
        }
        
        #container {
            position: relative;
            width: 100vw;
            height: 100vh;
        }
        
        #controls {
            position: absolute;
            top: 20px;
            left: 20px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            min-width: 250px;
        }
        
        .control-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            color: white;
            margin-bottom: 8px;
            font-weight: bold;
            text-shadow: 0 1px 2px rgba(0,0,0,0.3);
        }
        
        .dimension-inputs {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 10px;
            margin-bottom: 10px;
        }
        
        .dimension-input {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .dimension-label {
            color: #4CAF50;
            font-size: 12px;
            margin-bottom: 5px;
            font-weight: bold;
        }
        
        input[type="number"] {
            width: 70px;
            padding: 8px;
            border: none;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.9);
            color: #333;
            font-size: 14px;
            font-weight: bold;
            text-align: center;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }
        
        input[type="number"]:focus {
            outline: none;
            box-shadow: 0 0 0 2px #4CAF50;
        }
        
        .preset-buttons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
            margin-top: 10px;
        }
        
        .preset-btn {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.2s ease;
        }
        
        .preset-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-1px);
        }
        
        input[type="color"] {
            width: 100%;
            height: 40px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }
        
        button {
            background: linear-gradient(45deg, #4CAF50, #45a049);
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 25px;
            cursor: pointer;
            font-size: 16px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
            transition: all 0.3s ease;
            width: 100%;
            margin-top: 10px;
        }
        
        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
        }
        
        button:active {
            transform: translateY(0);
        }
        
        #info {
            position: absolute;
            bottom: 20px;
            left: 20px;
            color: white;
            background: rgba(0, 0, 0, 0.3);
            padding: 10px 15px;
            border-radius: 10px;
            backdrop-filter: blur(5px);
        }
        
        .dimensions-display {
            background: rgba(0, 0, 0, 0.2);
            padding: 10px;
            border-radius: 8px;
            margin-top: 10px;
            color: #4CAF50;
            text-align: center;
            font-size: 14px;
        }
        
        h3 {
            color: white;
            margin-top: 0;
            text-shadow: 0 1px 2px rgba(0,0,0,0.3);
            text-align: center;
        }