/* FoodIndex Design Tokens — DOC-03 "Market Index" (Phase 1 baseline) */
:root {
  /* Brand */
  --color-brand-primary: #c0392b;
  --color-brand-primary-hover: #a33025;
  --color-brand-primary-subtle: rgba(192, 57, 43, 0.1);
  --color-brand-secondary: #5c7a52;
  --color-brand-secondary-subtle: rgba(92, 122, 82, 0.12);

  /* Surfaces */
  --color-surface-base: #faf8f5;
  --color-surface-raised: #ffffff;
  --color-surface-sunken: #f2efe9;
  --color-surface-overlay: rgba(26, 23, 20, 0.5);

  /* Borders & text */
  --color-border-default: #e5e0d8;
  --color-border-strong: #cfc8bd;
  --color-text-primary: #1a1714;
  --color-text-secondary: #5c574f;
  --color-text-tertiary: #8a857c;
  --color-text-inverse: #ffffff;
  --color-text-link: #c0392b;
  --color-text-link-hover: #a33025;

  /* Semantic */
  --color-success: #2f6b3a;
  --color-success-subtle: rgba(47, 107, 58, 0.1);
  --color-warning: #9a6b16;
  --color-warning-subtle: rgba(154, 107, 22, 0.12);
  --color-error: #b42318;
  --color-error-subtle: rgba(180, 35, 24, 0.1);
  --color-info: #2c5f7c;
  --color-info-subtle: rgba(44, 95, 124, 0.1);

  /* Score / rank */
  --color-score-text: var(--color-text-primary);
  --color-score-bg: var(--color-surface-sunken);
  --color-rank-gold: #b8860b;
  --color-rank-silver: #6b7280;
  --color-rank-bronze: #9a6b4f;

  /* Typography */
  --font-display: "Fraunces", "Georgia", "Times New Roman", serif;
  --font-body: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: "IBM Plex Mono", "Consolas", "Monaco", monospace;

  --text-display-xl: clamp(2rem, 4vw, 3rem);
  --text-display-lg: clamp(1.75rem, 3vw, 2.25rem);
  --text-display-md: 1.5rem;
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-body-sm: 0.875rem;
  --text-caption: 0.75rem;
  --leading-tight: 1.2;
  --leading-body: 1.6;

  /* Spacing (4px scale) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Layout */
  --layout-max: 80rem; /* 1280px */
  --layout-content: 45rem;
  --layout-gutter: var(--space-4);
  --header-height: 4rem;
  --tabbar-height: 3.5rem;

  /* Radius & shadow */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --shadow-sm: 0 1px 2px rgba(26, 23, 20, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 23, 20, 0.08);

  /* Focus */
  --focus-ring: 0 0 0 3px var(--color-brand-primary-subtle);
  --focus-outline: 2px solid var(--color-brand-primary);

  /* Z-index */
  --z-header: 100;
  --z-tabbar: 110;
  --z-drawer: 120;
  --z-overlay: 115;
}

@media (min-width: 768px) {
  :root {
    --layout-gutter: var(--space-6);
  }
}

@media (min-width: 1024px) {
  :root {
    --layout-gutter: var(--space-8);
  }
}