/* tokens.css - Design Token System
   Single source of truth for all visual properties.
   Structured to map directly to Tailwind's theme.extend configuration.
   Always loaded, minimal size (~2KB).
*/

: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;

  /* =========================
     Border Radius
  ========================= */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* =========================
     Box Shadows (elevation)
  ========================= */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);

  /* =========================
     Typography Scale
  ========================= */
  --font-family-body: "Roboto", "Arial", sans-serif;
  --font-family-heading: "Roboto", "Arial", sans-serif;

--text-xs: 0.75rem;    /* 12px */
--text-sm: 0.875rem;   /* 14px */
--text-base: 0.875rem; /* 14px */
--text-md: 1rem;       /* 16px */
--text-lg: 1.125rem;   /* 18px */
--text-xl: 1.25rem;    /* 20px */
--text-2xl: 1.5rem;    /* 24px */
--text-3xl: 1.875rem;  /* 30px */

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --tracking-tight: -0.01em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;

  /* =========================
     Transitions
  ========================= */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* =========================
     Breakpoints (reference)
  ========================= */
  --bp-sm: 576px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1200px;
  --bp-2xl: 1440px;

  /* =========================
     Z-Index Scale
  ========================= */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-story-overlay: 250;
  --z-modal-backdrop: 10000;
  --z-modal: 10001;
  --z-toast: 10002;
  --z-tooltip: 10003;

  /* =========================
     Touch Targets
  ========================= */
  --touch-min: 44px;
  --touch-spacing: 8px;
}