:root{
/* Space - 4px base */
--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;--space-20:80px;--space-24:96px;
/* Radii */
--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-pill:999px;
/* Elevation - indigo-tinted, quiet */
--shadow-xs:0 1px 2px rgba(18,22,46,.06);
--shadow-sm:0 1px 2px rgba(18,22,46,.05),0 2px 8px rgba(18,22,46,.06);
--shadow-md:0 2px 4px rgba(18,22,46,.05),0 8px 24px rgba(18,22,46,.10);
--shadow-lg:0 4px 8px rgba(18,22,46,.06),0 20px 48px rgba(18,22,46,.16);
/* Motion - fades and small moves only; no bounces */
--ease-out:cubic-bezier(.2,.7,.3,1);
--dur-fast:120ms;
--dur-med:180ms;
}