/* DeltaBlue — Spacing, radii, shadows, borders, motion
 * 4px base grid. Soft cool-tinted shadows. Generous radii on UI, crisp on slides.
 */
:root {
  /* Spacing — 4px grid */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4 */
  --space-2: 0.5rem;    /* 8 */
  --space-3: 0.75rem;   /* 12 */
  --space-4: 1rem;      /* 16 */
  --space-5: 1.25rem;   /* 20 */
  --space-6: 1.5rem;    /* 24 */
  --space-8: 2rem;      /* 32 */
  --space-10: 2.5rem;   /* 40 */
  --space-12: 3rem;     /* 48 */
  --space-16: 4rem;     /* 64 */
  --space-20: 5rem;     /* 80 */
  --space-24: 6rem;     /* 96 */

  /* Radii */
  --radius-xs:   4px;
  --radius-sm:   6px;
  --radius-md:   10px;   /* default control/card */
  --radius-lg:   14px;
  --radius-xl:   20px;
  --radius-2xl:  28px;
  --radius-pill: 999px;

  /* Border widths */
  --border-width: 1px;
  --border-width-thick: 2px;

  /* Shadows — cool, navy-tinted, low spread */
  --shadow-xs:  0 1px 2px rgba(8, 17, 34, 0.06);
  --shadow-sm:  0 1px 3px rgba(8, 17, 34, 0.08), 0 1px 2px rgba(8, 17, 34, 0.04);
  --shadow-md:  0 4px 12px rgba(8, 17, 34, 0.08), 0 2px 4px rgba(8, 17, 34, 0.04);
  --shadow-lg:  0 12px 28px rgba(8, 17, 34, 0.10), 0 4px 8px rgba(8, 17, 34, 0.05);
  --shadow-xl:  0 24px 48px rgba(8, 17, 34, 0.14), 0 8px 16px rgba(8, 17, 34, 0.06);
  --shadow-brand: 0 8px 20px rgba(34, 97, 240, 0.28);

  /* 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:   320ms; /* @kind other */

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