/* Informàtica Funcional — spacing, radii, borders, shadows, motion */
:root {
  /* Spacing (generous air is the brand) */
  --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-section: clamp(72px, 6vw + 40px, 140px);   /* vertical rhythm between sections */

  --measure: 62ch;               /* max text measure */
  --container: 1200px;
  --container-pad: clamp(20px, 5vw, 48px);

  /* Radii */
  --radius-control: 10px;        /* buttons, inputs */
  --radius-card: 10px;
  --radius-pill: 999px;

  /* Borders */
  --hairline: 1px solid var(--if-hairline);

  /* Elevation — quiet; hover lift only */
  --shadow-rest: none;
  --shadow-hover: 0 10px 30px rgba(10, 10, 10, 0.07);
  --lift-hover: translateY(-3px); /* @kind other */

  /* Motion — subtle, ease-out, with criterio */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1); /* @kind other */
  --dur-micro: 180ms; /* @kind other */
  --dur-reveal: 520ms; /* @kind other */
  --reveal-distance: 20px;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-micro: 1ms; /* @kind other */
    --dur-reveal: 1ms; /* @kind other */
    --reveal-distance: 0px;
  }
}