:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --primary:#2563eb;
  --border:#e5e7eb;
}
[data-theme="dark"]{
  --bg:#0b1220;
  --card:#0f1a2c;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --primary:#60a5fa;
  --border:#1f2a3d;
}