/* ==========================================================================
   Kukis Global — Spacing, radii, shadows, layout
   4px base grid. Subtle elevation on dark surfaces; teal glow reserved
   for primary/active accents only.
   ========================================================================== */

:root {
  /* --- Spacing scale (4px base) ------------------------------------------ */
  --space-0:   0;
  --space-1:   0.25rem;  /* 4  */
  --space-2:   0.5rem;   /* 8  */
  --space-3:   0.75rem;  /* 12 */
  --space-4:   1rem;     /* 16 */
  --space-5:   1.5rem;   /* 24 */
  --space-6:   2rem;     /* 32 */
  --space-7:   2.5rem;   /* 40 */
  --space-8:   3rem;     /* 48 */
  --space-9:   4rem;     /* 64 */
  --space-10:  5rem;     /* 80 */
  --space-12:  7.5rem;   /* 120 — section rhythm */

  /* --- Radii -------------------------------------------------------------- */
  --radius-xs:   4px;
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   20px;
  --radius-2xl:  28px;
  --radius-pill: 999px;

  /* --- Borders ------------------------------------------------------------ */
  --border-width: 1px;
  --border-width-accent: 2px;

  /* --- Shadows (tuned for near-black surfaces) --------------------------- */
  --shadow-xs:  0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.45);
  --shadow-md:  0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg:  0 20px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow:    0 0 0 1px var(--border-accent), 0 0 28px -6px var(--accent-glow);
  --shadow-focus:   0 0 0 3px rgba(24, 181, 158, 0.35);

  /* --- Layout ------------------------------------------------------------- */
  --container-max: 1200px;
  --container-wide: 1360px;
  --gutter: var(--space-5);
  --section-pad: var(--space-12);

  /* --- Motion ------------------------------------------------------------- */
  --ease-out:   cubic-bezier(0.22, 1, 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:   220ms; /* @kind other */
  --dur-slow:   420ms; /* @kind other */
}