/* ============================================================
   Build Know How — Spacing, Radii, Shadows, Motion
   "Generous padding. No clutter. Soft shadows, subtle gradients.
    No glow. No glassmorphism."
   ============================================================ */

:root {
  /* ---- Spacing (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-11: 6rem;     /* 96 */
  --space-12: 8rem;     /* 128 */

  /* ---- Layout ---- */
  --container-max: 1200px;
  --container-prose: 680px;
  --gutter: var(--space-5);

  /* ---- Radii (structured, not playful) ---- */
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-pill: 999px;

  /* ---- Borders ---- */
  --border-hair: 1px;
  --border-thick: 1.5px;

  /* ---- Shadows — soft, low, warm. Never glow. ---- */
  --shadow-xs: 0 1px 2px rgba(15, 61, 62, 0.06);
  --shadow-sm: 0 2px 6px rgba(15, 61, 62, 0.07);
  --shadow-md: 0 8px 24px -8px rgba(15, 61, 62, 0.14);
  --shadow-lg: 0 20px 48px -16px rgba(11, 45, 46, 0.20);
  --shadow-inset: inset 0 1px 0 rgba(255,255,255,0.5);

  /* ---- Motion — measured, no bounce ---- */
  --ease-standard: cubic-bezier(0.4, 0.0, 0.2, 1); /* @kind other */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* @kind other */
  --dur-fast: 130ms; /* @kind other */
  --dur-base: 220ms; /* @kind other */
  --dur-slow: 420ms; /* @kind other */
}