/* FEBARC Performance — Spacing, radii, shadows, motion
   The mark is an angular shield (arquitetura / arcabouço): the system leans
   architectural and crisp. Radii are restrained, never pill-round for surfaces. */
:root{
  /* Spacing scale (4pt base) */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Radii — crisp. Buttons/inputs small; cards modest. */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-pill: 999px; /* reserved for tags/badges only */

  /* Borders */
  --border-hairline: 1px; /* @kind other */
  --border-strong: 2px; /* @kind other */

  /* Elevation — on the dark canvas, elevation reads as a purple-tinted glow
     plus a soft dark shadow. On light, a plain soft shadow. */
  --shadow-sm: 0 1px 2px rgba(10,2,26,0.4);
  --shadow-md: 0 8px 24px rgba(10,2,26,0.45);
  --shadow-lg: 0 24px 60px rgba(10,2,26,0.55);
  --shadow-glow: 0 0 0 1px rgba(186,107,255,0.18), 0 18px 50px rgba(123,47,212,0.32);
  --shadow-on-light: 0 10px 30px rgba(61,15,122,0.10);

  /* Focus ring */
  --ring: 0 0 0 3px rgba(186,107,255,0.45);

  /* Motion — measured and confident; no bounce. */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1); /* @kind other */
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1); /* @kind other */
  --dur-fast: 140ms; /* @kind other */
  --dur-base: 240ms; /* @kind other */
  --dur-slow: 480ms; /* @kind other */

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 760px;
}