/* Stratri — Spacing, radius, shadow & motion tokens
   Generous whitespace; soft, low radii; gentle navy-tinted shadows.
   The brand favors quality-policy-brief calm over flashy elevation. */
:root {
  /* ---- Spacing scale (8px rhythm) ---- */
  --space-1:  0.25rem;  /* 4 */
  --space-2:  0.5rem;   /* 8 */
  --space-3:  0.75rem;  /* 12 */
  --space-4:  1rem;     /* 16 */
  --space-5:  1.5rem;   /* 24 */
  --space-6:  2rem;     /* 32 */
  --space-8:  3rem;     /* 48 */
  --space-10: 4rem;     /* 64 */
  --space-12: 5rem;     /* 80 */
  --space-16: 8rem;     /* 128 */

  /* ---- Radii (soft, editorial — not pill-round) ---- */
  --radius-xs:   4px;
  --radius-sm:   8px;
  --radius-md:   10px;  /* default — cards, inputs, buttons */
  --radius-lg:   16px;
  --radius-xl:   24px;  /* feature panels, brand-story blocks */
  --radius-pill: 999px; /* tags, station numbers */

  /* ---- Shadows (navy-tinted, soft) ---- */
  --shadow-xs:  0 1px 2px rgba(30, 42, 69, 0.06);
  --shadow-sm:  0 2px 6px rgba(30, 42, 69, 0.08);
  --shadow-md:  0 8px 20px rgba(30, 42, 69, 0.10);
  --shadow-lg:  0 12px 24px rgba(30, 42, 69, 0.12);  /* card-hover lift */
  --shadow-focus: 0 0 0 3px var(--ring);

  /* ---- Borders ---- */
  --border-width: 1px;
  --border-width-strong: 2px; /* feature cards / brand-story outline */

  /* ---- Motion ---- */
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1); /* @kind other */
  --dur-fast:  0.2s; /* @kind other */
  --dur-base:  0.3s; /* @kind other */
  --dur-slow:  0.6s; /* @kind other */
  --lift-hover: -4px;   /* card-hover translateY */

  /* ---- Layout ---- */
  --container-max: 80rem; /* 1280px — max content width */
  --container-pad: 2rem;
}