body {
            font-family: 'Arial', sans-serif;
            background-color: #121212;
            color: #e0e0e0;
            margin: 0;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        h1 {
            color: #bb86fc;
            margin-bottom: 10px;
        }
        
        .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 100%;
            max-width: 900px;
        }
        
        canvas {
            background-color: #1e1e1e;
            border: 1px solid #333;
            border-radius: 8px;
            margin-bottom: 20px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        }
        
        .controls {
            width: 100%;
            background-color: #1e1e1e;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
            margin-bottom: 20px;
        }
        
        .control-group {
            margin-bottom: 15px;
        }
        
        label {
            display: block;
            margin-bottom: 5px;
            color: #bb86fc;
        }
        
        input[type="range"] {
            width: 100%;
            height: 8px;
            -webkit-appearance: none;
            background: #333;
            border-radius: 4px;
            outline: none;
        }
        
        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 18px;
            height: 18px;
            background: #bb86fc;
            border-radius: 50%;
            cursor: pointer;
        }
        
        .value-display {
            display: inline-block;
            width: 40px;
            text-align: right;
            margin-left: 10px;
        }
        
        .buttons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        button {
            padding: 10px 20px;
            background-color: #bb86fc;
            color: #121212;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s;
            flex: 1;
        }
        
        button:hover {
            background-color: #9a67ea;
        }
        
        button:active {
            background-color: #7f39fb;
        }
        
        .info {
            font-size: 14px;
            color: #888;
            margin-top: 5px;
        }