/* ==========================================================================
   Geography Art — the shared stylesheet.
   Evergreen for what you are making, bark brown for what is already made,
   white surfaces on an off-white ground. Every page loads this and one
   stylesheet of its own.
   ========================================================================== */

:root {
  --ink:        #1b2620;
  --ink-2:      #34443b;
  --muted:      #5d6b63;
  --line:       #dfe5df;
  --line-2:     #edf1ec;
  --surface:    #ffffff;
  --canvas:     #f6f7f3;

  --evergreen:      #1f5a32;
  --evergreen-700:  #16452a;
  --evergreen-tint: #e5efe6;

  --bark:      #7a4f2a;
  --bark-700:  #5b3a1e;
  --bark-tint: #f3ebe2;

  --ok:   #2f7d4f;
  --warn: #b7791f;
  --bad:  #b42318;

  --topbar-h: 60px;

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;

  --shadow-1: 0 1px 2px rgba(27,38,32,.06), 0 1px 3px rgba(27,38,32,.04);
  --shadow-2: 0 4px 12px rgba(27,38,32,.08), 0 12px 32px rgba(27,38,32,.08);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

/* Several classes below set `display`, which would otherwise beat the UA's
   [hidden] rule and leave empty boxes on screen. */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { color: var(--ink); line-height: 1.2; letter-spacing: -0.02em; margin: 0; }

a { color: var(--evergreen); text-underline-offset: 2px; }
a:hover { color: var(--evergreen-700); }

img { max-width: 100%; display: block; }

:focus-visible { outline: 2px solid var(--evergreen); outline-offset: 2px; border-radius: 4px; }

.skip-link {
  position: absolute; left: -9999px; top: 8px; z-index: 100;
  background: var(--surface); padding: 10px 16px; border-radius: var(--r-sm);
  box-shadow: var(--shadow-2); font-weight: 600;
}
.skip-link:focus { left: 12px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ── Header ──────────────────────────────────────────────────────────── */

.topbar {
  position: sticky; top: 0; z-index: 40;
  height: var(--topbar-h);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 0 clamp(16px, 4vw, 32px);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none; font-weight: 700;
  letter-spacing: -0.02em; font-size: 17px; flex-shrink: 0;
}
.brand-mark { width: 30px; height: 30px; color: var(--evergreen); flex-shrink: 0; }
.brand:hover { color: var(--evergreen); }
/* A page's title sits between the brand and the link, centred in the space
   between them rather than on the page, so it never runs under either. */
.page-title { flex: 1; margin: 0; text-align: center; font-size: 16px; font-weight: 700; color: var(--evergreen); letter-spacing: -0.01em; }
.topbar nav { display: flex; align-items: center; gap: 4px; }
.topbar nav a {
  display: block; padding: 8px 14px; border-radius: 999px;
  font-size: 14.5px; font-weight: 600; color: var(--evergreen);
  text-decoration: none; white-space: nowrap;
}
.topbar nav a:hover { background: var(--evergreen-tint); color: var(--evergreen-700); }

/* ── Pages ───────────────────────────────────────────────────────────── */

/* A map page: the map fills everything under the header, one card floats on it. */
.panel-map {
  position: relative;
  height: calc(100dvh - var(--topbar-h));
  overflow: hidden;
}

.map-fallback, .map-error {
  position: absolute; inset: 0; display: grid; place-items: center;
  padding: 32px; text-align: center; color: var(--muted);
}

/* A text page: one column of prose. */
.prose { max-width: 680px; margin: 0 auto; padding: clamp(32px, 6vw, 72px) clamp(16px, 5vw, 40px) 96px; }
.prose h1 { font-size: clamp(28px, 5vw, 40px); font-weight: 700; letter-spacing: -0.03em; margin-bottom: 16px; }
.prose p { margin: 0 0 16px; }

.maplibregl-ctrl-group { border-radius: var(--r-sm) !important; box-shadow: var(--shadow-1) !important; }
.maplibregl-ctrl-attrib { font-size: 11px; }

/* ── The floating card ───────────────────────────────────────────────── */

.map-card {
  position: absolute; z-index: 10;
  top: 16px; left: 16px; width: 320px; max-width: calc(100vw - 32px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-2);
  padding: 18px;
}

.readout {
  margin: 0 0 14px; display: grid; gap: 1px;
  background: var(--line-2); border-radius: var(--r-sm); overflow: hidden;
}
.readout > div {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  background: var(--surface); padding: 9px 12px;
}
.readout dt { font-size: 13px; color: var(--muted); }
.readout dd {
  margin: 0; font-size: 13.5px; font-weight: 600; color: var(--ink);
  font-variant-numeric: tabular-nums; text-align: right;
}

.status {
  display: flex; align-items: flex-start; gap: 8px;
  margin: 0 0 14px; font-size: 13px; line-height: 1.5; color: var(--ink-2);
  min-height: 20px;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  margin-top: 6px; background: var(--muted);
}
.status-dot[data-state="idle"]    { background: var(--line); }
.status-dot[data-state="loading"] { background: var(--evergreen); animation: pulse 1.2s ease-in-out infinite; }
.status-dot[data-state="ok"]      { background: var(--ok); }
.status-dot[data-state="warn"]    { background: var(--warn); }
.status-dot[data-state="bad"]     { background: var(--bad); }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .3 } }

/* Source attribution. Both licences require it, so unlike other fine print
   it stays visible at every width. */
.attribution { margin: 14px 0 0; font-size: 11px; line-height: 1.55; color: var(--muted); }
.attribution a { color: var(--muted); text-decoration: underline; }
.attribution a:hover { color: var(--evergreen); }

/* ── Buttons ─────────────────────────────────────────────────────────── */

.primary-btn {
  display: inline-block; width: 100%; text-align: center;
  padding: 12px 20px; border: none; border-radius: var(--r-md);
  background: var(--evergreen); color: #fff;
  font-family: inherit; font-size: 15px; font-weight: 600;
  text-decoration: none; cursor: pointer;
  box-shadow: 0 1px 2px rgba(31,90,50,.28), 0 4px 12px rgba(31,90,50,.2);
  transition: background .16s ease, transform .1s ease;
}
.primary-btn:hover:not(:disabled) { background: var(--evergreen-700); color: #fff; transform: translateY(-1px); }
.primary-btn:active:not(:disabled) { transform: translateY(0); }
.primary-btn:disabled { background: var(--line); color: var(--muted); box-shadow: none; cursor: not-allowed; }

.ghost-btn {
  padding: 8px 14px; border-radius: var(--r-sm);
  background: transparent; border: 1px solid var(--line);
  color: var(--ink-2); font-family: inherit; font-size: 13.5px; font-weight: 550;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease, color .16s ease;
}
.ghost-btn:hover { background: var(--canvas); border-color: var(--muted); color: var(--ink); }

/* Sources sit behind a toggle: they matter, but not on every glance. */
.card-sources { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 10px; }
.card-sources summary {
  cursor: pointer; color: var(--muted); font-size: 11px;
  font-weight: 650; letter-spacing: .07em; text-transform: uppercase;
}
.card-sources summary:hover { color: var(--ink-2); }
.card-sources .attribution { margin-top: 8px; }

/* ── Small screens ───────────────────────────────────────────────────── */

@media (max-width: 720px) {
  :root { --topbar-h: 54px; }

  .topbar { gap: 12px; padding: 0 14px; }
  .brand-text { display: none; }
  .page-title { font-size: 15px; }

  /* The card becomes a bottom sheet so the map keeps the usable area. */
  .map-card {
    top: auto; bottom: 0; left: 0; right: 0;
    width: auto; max-width: none;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    border-left: 0; border-right: 0; border-bottom: 0;
    padding: 16px 16px calc(16px + env(safe-area-inset-bottom));
    box-shadow: 0 -4px 24px rgba(27,38,32,.12);
  }

  /* Only the scale bar. The attribution control stays: it carries the
     basemap's OpenStreetMap credit. */
  .maplibregl-ctrl-scale { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
}