/* Corner radii. Buttons are rounder than cards — that inversion is
   deliberate in Sentinel and is one of its recognisable tells. */
:root{
  --radius-sm:4px;      /* chips, inline code */
  --radius-md:8px;      /* default; tiles, inputs, nav rows */
  --radius-btn:12px;    /* every button */
  --radius-lg:16px;     /* cards, panels */
  --radius-xl:24px;     /* large panels */
  --radius-2xl:32px;    /* modals (20px on mobile) */
  --radius-modal:20px;
  --radius-full:9999px; /* badges, status dots, avatars */
}