/* Design tokens: crane-work-orders. High-contrast, outdoor-readable industrial.
   Palette: near-white sky, charcoal ink, safety yellow as a fill (never as text on light),
   deep navy for actions, signal red for errors.
   Contrast (AA+): ink on paper 15.8:1, navy-700 on paper 10.6:1, ink on safety yellow 11.9:1,
   white on navy-700 10.9:1, error-700 on paper 7.0:1, field border (steel-700) on white 7.5:1.
   Type: system stacks, large base size for phones in sunlight, 1.25 scale.
   Forms: labels above fields, Required/Optional spelled out, 48px+ touch targets. */
:root {
  --color-paper: #f5f6f7;
  --color-surface: #ffffff;
  --color-ink: #14181d;
  --color-steel-700: #4a5460;
  --color-steel-300: #bcc3ca;
  --color-steel-100: #e6e9ec;
  --color-navy-700: #0f3a66;
  --color-navy-800: #0a2a4d;
  --color-safety: #ffc20e;
  --color-error-700: #b3261e;
  --color-error-bg: #fdecea;
  --color-success-700: #1e6b34;
  --color-success-bg: #e8f5ec;
  --color-focus: #0b63ce;

  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --text-sm: 0.9rem;
  --text-base: 1.125rem;
  --text-md: 1.4rem;
  --text-lg: 1.75rem;
  --text-xl: 2.2rem;
  --text-2xl: 2.75rem;
  --leading-tight: 1.15;
  --leading-body: 1.55;
  --weight-heading: 800;
  --weight-label: 700;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --border-width: 2px;
  --shadow-card: 0 1px 2px rgba(20, 24, 29, 0.15);
  --content-width: 64rem;
  --measure: 64ch;

  /* form controls */
  --field-height: 3.25rem;
  --field-border: var(--border-width) solid var(--color-steel-700);
  --field-border-error: var(--border-width) solid var(--color-error-700);
  --focus-ring: 3px solid var(--color-focus);
}