:root {
            --bg-primary: #0f0f1a;
            --bg-secondary: #1a1a2e;
            --bg-tertiary: #2a2a3e;
            --text-primary: #e8e8f0;
            --text-secondary: #b0b0c0;
            --accent-primary: #00d4ff;
            --accent-secondary: #ff006e;
            --accent-tertiary: #8338ec;
            --border-color: #404050;
            --success: #06d6a0;
            --error: #ff006e;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            padding: 1rem;
            overflow-x: hidden;
        }

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

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border-color);
        }

        .header h1 {
            font-family: 'Space Mono', monospace;
            font-size: 1.75rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .preset-switcher {
            display: flex;
            gap: 0.5rem;
        }

        .preset-btn {
            padding: 0.5rem 1rem;
            border: 1px solid var(--border-color);
            background: var(--bg-secondary);
            color: var(--text-primary);
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.875rem;
            transition: all 0.2s ease;
        }

        .preset-btn:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }

        .preset-btn.active {
            background: var(--accent-primary);
            color: var(--bg-primary);
            border-color: var(--accent-primary);
        }

        .layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        @media (max-width: 1024px) {
            .layout {
                grid-template-columns: 1fr;
            }
        }

        .panel {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 1.5rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .panel h2 {
            font-family: 'Space Mono', monospace;
            font-size: 1rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 1.5rem;
            color: var(--accent-primary);
        }

        .visualizer-container {
            width: 100%;
            height: 300px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(131, 56, 236, 0.05));
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }

        #visualizer {
            width: 100%;
            height: 100%;
            display: block;
        }

        .drum-pads {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }

        .drum-pad {
            aspect-ratio: 1;
            background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
            border: 2px solid var(--border-color);
            border-radius: 6px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Space Mono', monospace;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            color: var(--text-secondary);
            transition: all 0.1s ease;
            user-select: none;
        }

        .drum-pad:hover {
            border-color: var(--accent-primary);
            transform: scale(1.02);
        }

        .drum-pad.active {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
            color: var(--bg-primary);
            border-color: var(--accent-primary);
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
            transform: scale(0.98);
        }

        .controls-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }

        .control-group {
            display: flex;
            flex-direction: column;
        }

        .control-label {
            font-family: 'Space Mono', monospace;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
        }

        .control-value {
            font-family: 'Space Mono', monospace;
            font-size: 0.875rem;
            color: var(--accent-primary);
            margin-bottom: 0.25rem;
        }

        input[type="range"] {
            width: 100%;
            height: 4px;
            border-radius: 2px;
            background: var(--bg-tertiary);
            outline: none;
            -webkit-appearance: none;
            appearance: none;
        }

        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent-primary);
            cursor: pointer;
            box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
        }

        input[type="range"]::-moz-range-thumb {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent-primary);
            cursor: pointer;
            border: none;
            box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
        }

        .transport {
            display: flex;
            gap: 0.75rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }

        .btn {
            flex: 1;
            min-width: 80px;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            background: var(--bg-tertiary);
            color: var(--text-primary);
            border-radius: 4px;
            cursor: pointer;
            font-family: 'Space Mono', monospace;
            font-size: 0.875rem;
            font-weight: 700;
            text-transform: uppercase;
            transition: all 0.2s ease;
        }

        .btn:hover:not(:disabled) {
            border-color: var(--accent-primary);
            background: var(--accent-primary);
            color: var(--bg-primary);
        }

        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .btn.primary {
            background: var(--accent-primary);
            color: var(--bg-primary);
            border-color: var(--accent-primary);
        }

        .btn.recording {
            background: var(--error);
            border-color: var(--error);
            animation: pulse 1s infinite;
        }

        .btn.playing {
            background: var(--success);
            border-color: var(--success);
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.6; }
        }

        .status-display {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0.75rem;
            margin-top: 1.5rem;
        }

        .status-item {
            background: var(--bg-tertiary);
            padding: 0.75rem;
            border-radius: 4px;
            text-align: center;
        }

        .status-label {
            font-family: 'Space Mono', monospace;
            font-size: 0.65rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-secondary);
            margin-bottom: 0.25rem;
        }

        .status-value {
            font-family: 'Space Mono', monospace;
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-primary);
        }

        .toast {
            position: fixed;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 0.75rem 1.5rem;
            font-family: 'Space Mono', monospace;
            font-size: 0.875rem;
            color: var(--text-primary);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
            z-index: 1000;
        }

        .toast.visible {
            transform: translateX(-50%) translateY(0);
        }

        .footer-info {
            text-align: center;
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border-color);
        }