:root{--bg:#f4f7fc;--surface:#ffffff;--text:#1b2433;--muted:#5d6a7e;--border:#dae2ee;--accent:#1f5fd1;--accent-text:#ffffff;--tint:#e2ecfb;--user:#dbe7fb;--error-bg:#fdecec;--error-text:#9b2c2c;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#0e1420;--surface:#161f2e;--text:#e5ecf6;--muted:#93a1b6;--border:#2a3649;--accent:#6ea4ff;--accent-text:#0a1220;--tint:#1b2b45;--user:#1d3253;--error-bg:#3a1e1e;--error-text:#f2b8b8;color-scheme:dark}}body{background:var(--bg);color:var(--text)}