@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;900&display=swap');
        body {
            margin: 0;
            padding: 0;
            background-color: #0f1117;
            color: #e2e8f0;
            font-family: 'Inter', sans-serif;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            user-select: none;
            touch-action: none;
        }
        #ui-layer {
            position: absolute;
            top: 20px;
            pointer-events: none;
            text-align: center;
            z-index: 10;
            width: 100%;
        }
        .score-container {
            font-size: 3rem;
            font-weight: 900;
            font-style: italic;
            background: linear-gradient(to bottom, #fff, #ef4444);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 0 10px rgba(255,59,59,0.3));
        }
        #game-canvas {
            border-left: 4px solid #1e293b;
            border-right: 4px solid #1e293b;
            border-bottom: 4px solid #1e293b;
            background: radial-gradient(circle at center, #1a1616 0%, #0f1117 100%);
            box-shadow: 0 0 60px rgba(239,68,68,0.15);
            cursor: crosshair;
        }
        .controls-hint {
            margin-top: 15px;
            font-size: 0.8rem;
            color: #ef4444;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; } 50% { opacity: 0.4; }
        }
        #game-over {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(20, 10, 10, 0.98);
            padding: 2.5rem;
            border-radius: 1rem;
            border: 2px solid #ef4444;
            text-align: center;
            display: none;
            z-index: 100;
            backdrop-filter: blur(15px);
            box-shadow: 0 0 30px rgba(239,68,68,0.5);
        }
        button {
            background: #ef4444;
            color: white;
            border: none;
            padding: 12px 28px;
            font-weight: 900;
            border-radius: 4px;
            cursor: pointer;
            margin-top: 1rem;
            transition: all 0.2s;
            text-transform: uppercase;
        }
        button:hover { background: #ff5f5f; }
        button:active { transform: scale(0.95); }
        #next-container {
            position: absolute;
            right: 20px;
            top: 20px;
            background: rgba(30, 41, 59, 0.5);
            padding: 10px;
            border-radius: 10px;
            border: 1px solid #334155;
        }
        .next-label { font-size: 0.6rem; color: #94a3b8; margin-bottom: 5px; text-transform: uppercase; }
        #next-preview { width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; }