/* Hallmark · macrostructure: Catalogue · genre: editorial · theme: Studio (Dartmouth green anchor)
 * nav: N7 Inline + Wordmark · footer: Ft2 Terse statement
 * tone: clean editorial · enrichment: none (typography only)
 */

:root {
  /* Color — OKLCH palette with Dartmouth green accent */
  --color-paper: oklch(98% 0 0);
  --color-paper-2: oklch(96% 0 0);
  --color-paper-3: oklch(93% 0 0);

  --color-ink: oklch(22% 0 0);
  --color-ink-muted: oklch(45% 0 0);
  /* 50% L clears 4.5:1 on paper for small text (was 62% = 3.44:1, failing AA). */
  --color-ink-subtle: oklch(50% 0 0);

  /* Dartmouth green as primary accent — #00693E converted to OKLCH */
  --color-accent: oklch(39% 0.11 155);
  --color-accent-hover: oklch(35% 0.12 155);
  --color-accent-subtle: oklch(95% 0.02 155);

  --color-focus: oklch(50% 0.15 265);
  --color-border: oklch(88% 0 0);
  --color-border-strong: oklch(75% 0 0);
  /* Form-field boundary: 62% L clears the 3:1 non-text-contrast minimum on paper
     (the 88% L hairline border is 1.36:1 — fine for dividers, not for inputs). */
  --color-border-input: oklch(62% 0 0);

  /* Typography */
  --font-display: 'Newsreader', 'Iowan Old Style', 'Palatino Linotype', 'URW Palladio L', P052, serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1.0625rem;
  --text-lg: 1.1875rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.625rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.25rem;

  --text-display: 2.5rem;
  --text-display-s: 2rem;

  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-normal: 1.55;
  --leading-relaxed: 1.65;

  --measure: 68ch;
  --measure-narrow: 55ch;
  --measure-wide: 80ch;

  /* Spacing — 4pt scale */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Motion */
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
  --ease-in: cubic-bezier(0.9, 0, 1, 0.2);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --dur-instant: 0ms;
  --dur-fast: 150ms;
  --dur-base: 250ms;
  --dur-slow: 400ms;

  /* Misc */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;

  --rule-thin: 1px;
  --rule-base: 2px;
}

/* Base resets */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  overflow-x: clip;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background: var(--color-paper);
}

/* Focus styles — visible ring, never animated */
:focus-visible {
  outline: var(--rule-base) solid var(--color-focus);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* Also remove the decorative hover-lifts so there's zero positional shift.
     Scoped to specific elements — a blanket `transform: none` would break
     Leaflet, which positions map markers with transforms. */
  .resource-card:hover,
  .scenario-card:hover,
  .scenario-tile:hover,
  .pin-place:hover span,
  .pin-place:focus span {
    transform: none !important;
  }
}

/* Visually hidden, still exposed to assistive tech. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link: off-screen until focused, then anchored top-left. */
.skip-link {
  position: absolute;
  left: var(--space-2xs);
  top: -3rem;
  z-index: 100;
  padding: var(--space-2xs) var(--space-sm);
  background: var(--color-accent);
  color: var(--color-paper);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-2xs);
}

/* Generic toast region for inline status messages (replaces alert/confirm). */
.toast-region {
  position: fixed;
  left: 50%;
  bottom: var(--space-lg);
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  pointer-events: none;
}

.toast {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}