/**
 * Design tokens — Visual Style Guide (exact values)
 * Breakpoints: mobile <768 | tablet 768–1199 | desktop ≥1200
 */

:root {
  /* Brand — primary greens */
  --color-primary-900: #173B35;
  --color-primary-800: #1F4A42;
  --color-primary-700: #28584E;
  --color-primary-600: #32695E;
  --color-primary-500: #3F786B;

  /* Accent — terracotta */
  --color-accent-700: #A85F3D;
  --color-accent-600: #B86D49;
  --color-accent-500: #C77A52;
  --color-accent-100: #F3E3D9;

  /* Neutrals */
  --color-neutral-950: #171817;
  --color-neutral-900: #202220;
  --color-neutral-800: #343634;
  --color-neutral-700: #50524F;
  --color-neutral-600: #6B6D69;
  --color-neutral-500: #858781;
  --color-neutral-400: #A5A69F;
  --color-neutral-300: #C9CAC3;
  --color-neutral-200: #E2E2DC;
  --color-neutral-100: #F1F1EB;
  --color-neutral-50: #F8F7F2;

  /* Surfaces */
  --color-surface-page: #F8F7F2;
  --color-surface-primary: #FFFFFF;
  --color-surface-soft: #F1F1EB;
  --color-surface-dark: #173B35;
  --color-surface-dark-deep: #102B27;
  /* Near-black structural close — distinct from CTA green */
  --color-surface-footer: #0B1614;

  /* Surface rhythm aliases (purpose-led, not mechanical alternation) */
  --surface-editorial: var(--color-surface-page);
  --surface-white: var(--color-surface-primary);
  --surface-dark: var(--color-surface-dark);
  --surface-deep: var(--color-surface-dark-deep);
  --surface-footer: var(--color-surface-footer);

  /* Text */
  --color-text-primary: #202220;
  --color-text-secondary: #50524F;
  --color-text-muted: #6B6D69;
  --color-text-inverse: #FFFFFF;

  /* Borders */
  --color-border-default: #E2E2DC;
  --color-border-strong: #C9CAC3;

  /* Semantic */
  --color-success: #3F7051;
  --color-warning: #A97932;
  --color-error: #A8493F;

  /* Typography */
  --font-display: "DM Serif Display", serif;
  --font-body: "Manrope", sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 4rem;
  --text-6xl: 5.25rem;

  /* Spacing */
  --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;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Container */
  --container-max: 1440px;
  --container-padding-desktop: 48px;
  --container-padding-tablet: 32px;
  --container-padding-mobile: 20px;
  --container-padding: var(--container-padding-mobile);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);

  /* Breakpoint reference values (use in media queries) */
  --bp-tablet: 768px;
  --bp-desktop: 1200px;

  /* Motion */
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 250ms;
  --ease-standard: ease;

  /* Focus ring */
  --focus-ring-color: var(--color-primary-600);
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;

  /* Selection card tint */
  --color-selection-tint: rgba(23, 59, 53, 0.06);

  /* Readable measure */
  --measure-readable: 72ch;
}

@media (min-width: 768px) {
  :root {
    --container-padding: var(--container-padding-tablet);
  }
}

@media (min-width: 1200px) {
  :root {
    --container-padding: var(--container-padding-desktop);
  }
}