:root{--bg: #0f0f14;--bg-card: #1a1a24;--bg-card-hover: #22222e;--bg-tile: #252535;--border: #2a2a3a;--text: #e8e8f0;--text-dim: #8888a0;--primary: #6c5ce7;--primary-hover: #7d6ff0;--danger: #e74c3c;--danger-hover: #f05e4e;--success: #2ecc71;--success-hover: #3ddb80;--warning: #f39c12;--accent-blue: #3498db;--accent-cyan: #00cec9;--timer-bar: #6c5ce7;--timer-low: #e74c3c;font-family:Inter,system-ui,sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}.screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:2rem;max-width:480px;width:100%;text-align:center}.card 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