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

        body {
            background: #000;
            overflow: hidden;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        canvas {
            display: block;
            cursor: grab;
        }

        canvas:active {
            cursor: grabbing;
        }

        .controls {
            position: fixed;
            top: 20px;
            left: 20px;
            z-index: 100;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            padding: 20px;
            border-radius: 15px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: white;
            min-width: 250px;
        }

        .controls h3 {
            margin-bottom: 15px;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: #00d4ff;
        }

        .control-group {
            margin-bottom: 15px;
        }

        .control-group label {
            display: block;
            font-size: 12px;
            margin-bottom: 5px;
            color: rgba(255, 255, 255, 0.7);
        }

        .control-group input[type="range"] {
            width: 100%;
            height: 4px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 2px;
            outline: none;
            -webkit-appearance: none;
        }

        .control-group input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 14px;
            height: 14px;
            background: #00d4ff;
            border-radius: 50%;
            cursor: pointer;
            box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
        }

        .control-group input[type="range"]::-moz-range-thumb {
            width: 14px;
            height: 14px;
            background: #00d4ff;
            border-radius: 50%;
            cursor: pointer;
            border: none;
            box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
        }

        .value-display {
            display: inline-block;
            float: right;
            color: #00d4ff;
            font-weight: bold;
        }

        .info {
            position: fixed;
            bottom: 20px;
            left: 20px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
            z-index: 100;
        }

        .color-picker {
            display: flex;
            gap: 10px;
            margin-top: 10px;
        }

        .color-btn {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .color-btn:hover, .color-btn.active {
            border-color: white;
            transform: scale(1.1);
        }