:root{--bg:#fafafa;--fg:#1d1d1f;--muted:#6b7280;--accent:#2563eb;--chord:#b91c1c;--border:#e5e7eb;--font-size:16px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:var(--font-size);color:var(--fg);background:var(--bg)}@media (prefers-color-scheme:dark){:root:not([data-theme]){--bg:#0a0a0a;--fg:#f5f5f5;--muted:#9ca3af;--accent:#60a5fa;--chord:#fca5a5;--border:#1f2937}}[data-theme=dark]{--bg:#0a0a0a;--fg:#f5f5f5;--muted:#9ca3af;--accent:#60a5fa;--chord:#fca5a5;--border:#1f2937}[data-theme=light]{--bg:#fafafa;--fg:#1d1d1f;--muted:#6b7280;--accent:#2563eb;--chord:#b91c1c;--border:#e5e7eb}*{box-sizing:border-box}body{margin:0}button{font:inherit}