/* ============================================================
   AiStrats — Spacing, radii, shadows, motion
   ============================================================ */

:root {
  /* ---- Spacing scale (4px base) ---- */
  --space-0:  0;
  --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;

  /* ---- Radii ---- */
  --radius-xs:   4px;
  --radius-sm:   6px;
  --radius-md:   10px;   /* default card radius                */
  --radius-lg:   14px;
  --radius-xl:   20px;
  --radius-pill: 999px;

  /* ---- Borders ---- */
  --border-width: 1px;

  /* ---- Shadows — soft, cool-tinted (navy, never neutral gray) ---- */
  --shadow-xs:  0 1px 2px rgba(11,37,64,0.06);
  --shadow-sm:  0 1px 3px rgba(11,37,64,0.08), 0 1px 2px rgba(11,37,64,0.05);
  --shadow-md:  0 4px 12px rgba(11,37,64,0.08), 0 2px 4px rgba(11,37,64,0.05);
  --shadow-lg:  0 12px 28px rgba(11,37,64,0.12), 0 4px 10px rgba(11,37,64,0.06);
  --shadow-xl:  0 24px 56px rgba(11,37,64,0.18);
  --shadow-focus: 0 0 0 3px var(--focus-ring);

  /* ---- Motion ---- */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);   /* @kind other */
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);  /* @kind other */
  --dur-fast:   120ms;  /* @kind other */
  --dur-base:   200ms;  /* @kind other */
  --dur-slow:   360ms;  /* @kind other */

  /* ---- Layout ---- */
  --rail-width:    228px;
  --rail-collapsed: 64px;
  --header-height: 60px;
  --maxw-content:  1440px;
}