/* --------------------------------------------------------------
   Design tokens — single source of truth for the visual system
   -------------------------------------------------------------- */

:root {
  /* Color: text & surface */
  --color-text: #1a0f1c;
  --color-text-muted: #5a4a5d;
  --color-text-inverse: #ffffff;
  --color-surface: #ffffff;
  --color-surface-alt: #f7f5f3;
  --color-surface-sunken: #efebed;
  --color-border: #e4dfe1;
  --color-border-strong: #cdc4c8;

  /* Color: brand */
  --color-accent: #41307c;
  --color-accent-hover: #32255f;
  --color-brand: #ff922c;
  --color-brand-deep: #FF6E19;
  --color-footer-bg: #00445c;
  --color-link: #41307c;
  --color-link-external: #2c5d8f;

  /* Color: kanban status */
  --status-plan: #64ade3;
  --status-progress: #ffc34a;
  --status-done: #7da623;
  --status-plan-tint: #eaf3fb;
  --status-progress-tint: #fff5dd;
  --status-done-tint: #eef4dc;

  /* Color: code & misc */
  --color-code: #c2185b;
  --color-code-bg: #fff0f5;

  /* Typography */
  --font-sans: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-md: 1.0625rem;   /* 17px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.375rem;    /* 22px */
  --text-2xl: clamp(1.625rem, 2.5vw, 2.125rem);  /* 26→34px */

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  --tracking-wide: 0.06em;
  --tracking-wider: 0.12em;

  /* Spacing scale (4px base) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(26, 15, 28, 0.06), 0 1px 1px rgba(26, 15, 28, 0.04);
  --shadow-md: 0 4px 12px rgba(26, 15, 28, 0.08), 0 2px 4px rgba(26, 15, 28, 0.05);
  --shadow-lg: 0 12px 28px rgba(26, 15, 28, 0.12), 0 4px 8px rgba(26, 15, 28, 0.06);
  --shadow-focus: 0 0 0 3px rgba(65, 48, 124, 0.35);

  /* Motion */
  --motion-fast: 120ms ease-out;
  --motion-base: 200ms ease-out;
  --motion-slow: 320ms ease-out;

  /* Layout */
  --content-max-width: 1280px;
  --reading-max-width: 72ch;
  --topbar-height: 0px;          /* mobile: no top chrome row */
  --board-pin-offset: 72px;      /* mobile: just the dropdown */
  --footer-height: 28px;
}

/* On desktop the floating D-logo (left) and the orange identity pill (right)
   sit in a "top chrome" row above the chip header. Reserve room for them so
   the chips don't slide underneath. */
@media (min-width: 768px) {
  :root {
    --topbar-height: 64px;
    /* topbar 64 + chip margin-top 8 + chip row 33 + 2 + desc row 30
       + chip margin-bottom 8 + wrapper border 1 + cushion */
    --board-pin-offset: 160px;
  }
}

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