/* FrostCal shared stylesheet — mobile-first, light/dark via prefers-color-scheme.
   No external fonts, no framework. Kept lean so every page stays well under 100KB. */

:root {
  --bg: #fbfaf6;
  --surface: #ffffff;
  --surface-2: #f3f1ea;
  --text: #1f2a1f;
  --text-muted: #5b6b58;
  --border: #e1e3d8;
  --accent: #3f7d4a;
  --accent-dark: #2c5c34;
  --accent-soft: #e9f3ea;
  --earth: #8a6a37;
  --safe: #2f7a42;
  --typical: #6b5a2a;
  --risky: #b0552c;
  --link: #2c5c34;
  --link-visited: #4a5a3e;
  --shadow: 0 1px 2px rgba(31, 42, 31, 0.06), 0 1px 12px rgba(31, 42, 31, 0.05);
  --radius: 10px;
  --max-width: 780px;
  --chart-min: #3f7fb0;
  --chart-avg: #7a6a3f;
  --chart-max: #c1553a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12160f;
    --surface: #191f16;
    --surface-2: #202a1c;
    --text: #e9ede3;
    --text-muted: #a7b39e;
    --border: #2c3626;
    --accent: #6fbf7a;
    --accent-dark: #8fd699;
    --accent-soft: #1f2f21;
    --earth: #cba765;
    --safe: #6fbf7a;
    --typical: #d8c27a;
    --risky: #e08a5f;
    --link: #8fd699;
    --link-visited: #b7c9a8;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 1px 12px rgba(0, 0, 0, 0.3);
    --chart-min: #7db8e8;
    --chart-avg: #cbb673;
    --chart-max: #e2836a;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:visited { color: var(--link-visited); }
a:hover { color: var(--accent-dark); }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 64px;
}

/* ---------- site header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.site-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand:visited { color: var(--text); }
.brand span { color: var(--accent); }
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 18px 0 0;
}
.breadcrumbs a { color: var(--text-muted); }

h1 {
  font-size: 1.65rem;
  line-height: 1.25;
  margin: 10px 0 6px;
  letter-spacing: -0.01em;
}
h2 {
  font-size: 1.25rem;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
}
h3 { font-size: 1.05rem; margin: 20px 0 8px; }
p { margin: 0 0 14px; }
.lede {
  color: var(--text-muted);
  font-size: 1.02rem;
  margin-bottom: 24px;
}

/* ---------- summary box ---------- */
.summary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin: 20px 0 28px;
}
.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 560px) {
  .summary-grid { grid-template-columns: 1fr 1fr; }
}
.summary-item .label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.summary-item .value {
  font-size: 1.15rem;
  font-weight: 600;
}
.summary-item .sub {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 2px;
}
.zone-unavailable {
  color: var(--text-muted);
  font-weight: 500;
}
.frost-scale {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.pill {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.82rem;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.pill b { font-size: 0.86rem; }
.pill.safe { border-color: var(--safe); color: var(--safe); }
.pill.typical { border-color: var(--typical); color: var(--typical); }
.pill.risky { border-color: var(--risky); color: var(--risky); }
.station-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* ---------- countdown widget ---------- */
.countdown {
  display: flex;
  align-items: baseline;
  gap: 10px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 0 0 28px;
}
.countdown .num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
}
.countdown .txt { color: var(--text-muted); font-size: 0.92rem; }

/* ---------- chart ---------- */
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 16px 8px;
  margin: 0 0 28px;
}
.chart-card svg { display: block; width: 100%; height: auto; }
.chart-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 8px;
  padding-bottom: 4px;
}
.chart-legend .swatch {
  display: inline-block;
  width: 12px;
  height: 3px;
  margin-right: 5px;
  vertical-align: middle;
  border-radius: 2px;
}

/* ---------- calendar table ---------- */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--surface);
  margin-bottom: 10px;
}
table.calendar {
  border-collapse: collapse;
  width: 100%;
  min-width: 640px;
  font-size: 0.92rem;
}
table.calendar caption {
  text-align: left;
  font-weight: 700;
  padding: 12px 14px 6px;
  color: var(--accent-dark);
  background: var(--surface-2);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
table.calendar th, table.calendar td {
  padding: 9px 14px;
  text-align: left;
  border-top: 1px solid var(--border);
  white-space: nowrap;
}
table.calendar thead th {
  background: var(--surface-2);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  white-space: normal;
}
table.calendar td.crop-name { font-weight: 600; white-space: normal; }
table.calendar td.note-cell { white-space: normal; color: var(--text-muted); font-size: 0.86rem; }
table.calendar tbody tr:hover { background: var(--surface-2); }
.table-hint { font-size: 0.8rem; color: var(--text-muted); margin: 0 0 26px; }

/* ---------- FAQ ---------- */
.faq-item {
  border-top: 1px solid var(--border);
  padding: 16px 0;
}
.faq-item:first-of-type { border-top: none; }
.faq-item h3 { margin: 0 0 6px; font-size: 1rem; }
.faq-item p { margin: 0; color: var(--text-muted); }

/* ---------- nearby cities ---------- */
.nearby-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.nearby-list li { margin: 0; }
.nearby-list a {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 0.88rem;
  text-decoration: none;
}
.nearby-list a:hover { border-color: var(--accent); color: var(--accent-dark); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding: 24px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.site-footer p { margin: 0 0 8px; }
.disclaimer {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: 0.85rem;
}

.badge-frostfree {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-dark);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 3px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 10px;
}

/* ---------- homepage hero ---------- */
.hero {
  padding: 28px 0 8px;
}
.hero h1 {
  font-size: 1.9rem;
  margin: 6px 0 8px;
}
.hero .lede {
  font-size: 1.05rem;
  max-width: 60ch;
}

/* ---------- search box ---------- */
.search-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin: 8px 0 32px;
}
.search-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.search-input {
  width: 100%;
  font-size: 1.05rem;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
}
.search-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
}
.search-results li {
  border-top: 1px solid var(--border);
}
.search-results li:first-child { border-top: none; }
.search-results li:not(:empty) { padding: 2px 0; }
.search-results a {
  display: block;
  padding: 8px 4px;
  text-decoration: none;
}
.search-results a:hover { color: var(--accent-dark); }
.search-results .no-results,
.search-results .loading {
  padding: 8px 4px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- state / top-cities tables ---------- */
table.state-table td:nth-child(2),
table.state-table td:nth-child(3),
table.state-table td:nth-child(4) {
  white-space: normal;
}
table.top-cities-table .rank-cell {
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  width: 2.5em;
}

/* ---------- states A-Z list ---------- */
.state-az-list {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 20px;
}
@media (min-width: 560px) {
  .state-az-list { columns: 3; }
}
.state-az-list li {
  break-inside: avoid;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.state-az-list .count {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- methodology / static pages ---------- */
.methodology h2 { margin-top: 36px; }
.methodology dt { font-weight: 600; margin-top: 14px; }
.methodology dd { margin: 4px 0 0; color: var(--text-muted); }