/* Green Town design tokens — see docs/design-system.md for rationale. */
:root {
  /* Brand palette (analogous greens + restrained warm accent) */
  --color-brand-900: #143d2e;
  --color-brand-700: #176447;
  --color-brand-600: #276a4b;
  --color-accent-500: #bb843f; /* decoration only; 3.2:1 on white — never body text */
  --color-accent-900: #79521f;
  --color-surface: #faf8f2;
  --color-surface-raised: #ffffff;
  --color-text: #172720;
  --color-text-muted: #58695f;
  --color-border: #d5e3da;

  /* Derived tints (decorative surfaces only) */
  --color-brand-50: #eef5f0;
  --color-brand-100: #e0ece4;
  --color-accent-50: #f7efe3;

  /* UI states — each paired with an icon/text, never color alone */
  --color-error: #a8261e;        /* 6.6:1 on white */
  --color-error-bg: #fbeceb;
  --color-warning: #7a4f00;      /* 7.0:1 on white */
  --color-warning-bg: #fdf3df;
  --color-success: #176447;
  --color-success-bg: #e6f2eb;
  --color-focus: #1f5fbf;        /* 6.0:1 on ivory; ring with ivory gap */
  --color-focus-on-dark: #ffd791;

  /* Typography */
  --font-latin: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-arabic: 'Tajawal', 'Geeza Pro', 'Segoe UI', Tahoma, sans-serif;
  --font-ui: var(--font-latin), var(--font-arabic);

  --text-xs: 0.8125rem;  /* 13px */
  --text-sm: 0.875rem;   /* 14px */
  --text-md: 1rem;       /* 16px */
  --text-lg: 1.0625rem;  /* 17px — dish names */
  --text-xl: 1.375rem;   /* 22px — section titles (mobile) */
  --text-2xl: 1.625rem;  /* 26px */
  --text-hero: clamp(1.875rem, 1.6rem + 1.2vw, 2.5rem); /* 30px → 40px */

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-body: 1.55;

  /* 8px spacing system (4px half-step for fine detail) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Shape */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* Elevation — soft, layered, green-tinted */
  --shadow-1: 0 1px 2px rgb(20 61 46 / 0.06), 0 1px 1px rgb(20 61 46 / 0.04);
  --shadow-2: 0 1px 2px rgb(20 61 46 / 0.05), 0 6px 16px -6px rgb(20 61 46 / 0.14);
  --shadow-3: 0 2px 4px rgb(20 61 46 / 0.06), 0 16px 32px -12px rgb(20 61 46 / 0.22);

  /* Motion */
  --dur-fast: 120ms;
  --dur-base: 180ms;
  --dur-slow: 220ms;
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);

  /* Layout */
  --content-max: 1160px;
  --gutter: 16px;
  --tap: 44px;
  --header-h: 60px; /* updated at runtime by menu-page.js */
  --nav-h: 69px; /* 44px chips + 2×12px padding + border */
}

@media (min-width: 768px) {
  :root {
    --gutter: 24px;
    --text-xl: 1.5rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --gutter: 32px;
    --text-xl: 1.625rem;
    --nav-h: 0px; /* category nav becomes a sidebar */
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-fast: 0ms;
    --dur-base: 0ms;
    --dur-slow: 0ms;
  }
}