/* ============================================================
   SHADOWS & TEXTURE
   "Digital surfaces echo material intelligence without fake
   skeuomorphism." Shadows inspired by real, soft daylight —
   warm-tinted, low-contrast on light ground; deeper and
   atmospheric on dark cinematic / void ground.
   ============================================================ */

:root {
  /* Warm daylight shadows (light ground) */
  --shadow-xs: 0 1px 2px rgba(36, 25, 12, 0.06);
  --shadow-sm: 0 2px 6px rgba(36, 25, 12, 0.08);
  --shadow-md: 0 8px 20px rgba(36, 25, 12, 0.10);
  --shadow-lg: 0 18px 44px rgba(36, 25, 12, 0.14);
  --shadow-feature: 0 28px 70px rgba(23, 63, 42, 0.18);

  /* Inner grounding shadow (soil horizon feel) */
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.5);

  /* Focus ring (paired with --focus-ring color) */
  --ring-width: 3px;

  /* Ambient glow — reserved for AI Labs bioluminescence */
  --glow-bio: 0 0 0 1px rgba(99, 221, 213, 0.25), 0 0 24px rgba(99, 221, 213, 0.22);
}

.brand-praxis {
  --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 10px 28px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 22px 60px rgba(0, 0, 0, 0.6);
  --shadow-feature: 0 30px 80px rgba(0, 0, 0, 0.7);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.brand-ai {
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
  --shadow-feature: 0 0 0 1px rgba(99, 221, 213, 0.18), 0 20px 60px rgba(0, 0, 0, 0.6);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}