/* ==========================================================================
   Shared design tokens + reset/base + typography roles for the static
   docs/demo/ and docs/explorer/ pages, so the two read as one project.
   Page-specific rules (layout, components, page-specific overrides) stay in
   each page's own styles.css.
   ========================================================================== */

:root {
  color-scheme: dark;

  /* --- Semantic palette (UI-SPEC Color, 60/30/10 over a dark base) --- */
  --bg: #0f1115;          /* Dominant 60% — page + map frame */
  --surface: #141824;     /* Secondary 30% — cards, panels */
  --border: #262b38;      /* Card borders / dividers */
  --fg: #e6e8ee;          /* Foreground text (AA on --bg) */
  --muted: #9aa3b2;       /* Muted meta text (AA on --bg for its sizes) */
  --accent: #4da3ff;      /* Accent 10% — reserved list only */
  --warning: #f5a623;     /* Urgency amber — "move today" only */
  --positive: #35d67f;    /* Safe green — "no restrictions" only */

  /* --- Spacing scale (8-point, multiples of 4) --- */
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  --sp-3xl: 64px;

  /* --- Type families --- */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius: 10px;
}

/* --- Reset / base --- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  /* Body role: 16px / 400 / 1.5 */
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  color: var(--fg);
  padding: var(--sp-sm) var(--sp-md);
  border-radius: var(--radius);
  z-index: 1000;
}
.skip-link:focus { left: var(--sp-md); }

/* ==========================================================================
   Typography roles (exactly 4 roles, 2 weights)
   ========================================================================== */
.display { font-size: 28px; font-weight: 600; line-height: 1.2; margin: 0; }
.heading { font-size: 20px; font-weight: 600; line-height: 1.25; margin: 0 0 var(--sp-sm); }
.body    { font-size: 16px; font-weight: 400; line-height: 1.5; }
.label   { font-size: 14px; font-weight: 400; line-height: 1.5; }
.mono    { font-family: var(--font-mono); font-size: 14px; font-weight: 400; line-height: 1.5; }
.muted   { color: var(--muted); }

/* ==========================================================================
   Hero + footer — shared shell chrome (demo + explorer)
   ========================================================================== */
.hero {
  padding: var(--sp-3xl) var(--sp-lg) var(--sp-2xl);
  max-width: 1200px;
  margin: 0 auto;
}
.hero-subhead {
  color: var(--muted);
  max-width: 70ch;
  margin: var(--sp-sm) 0 0;
}

.site-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--sp-xl) var(--sp-lg) var(--sp-3xl);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

/* ==========================================================================
   Shared layout scaffold — desktop two-column, mobile-first single-column
   (demo + explorer). Each page's own styles.css overrides #map's min-height
   at wider breakpoints and adds its own page-specific components.
   ========================================================================== */
.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-xl);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-lg) var(--sp-3xl);
}
.panel {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

/* Explicit map height — Leaflet collapses to 0px otherwise (Pitfall 7). */
#map {
  min-height: 320px;              /* below 768px baseline */
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-lg);
}