/* FrostDate — original design. Mobile-first. No frameworks. */
:root {
  --pine: #16302b;
  --moss: #2e5e4e;
  --fern: #3f7a5f;
  --sage: #8aa899;
  --cream: #faf7ef;
  --parchment: #f1e9d6;
  --clay: #c4703f;
  --clay-deep: #a5572c;
  --ink: #22302a;
  --muted: #5d6f66;
  --line: #e2d9c3;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(22, 48, 43, 0.08);
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  font-size: 17px;
}

.wrap { max-width: 44rem; margin: 0 auto; padding: 0 1.1rem; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--pine); color: #fff; padding: 0.6rem 1rem; z-index: 10;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* Header */
.site-header {
  background: var(--pine);
  color: var(--cream);
  padding: 1rem 0;
  border-bottom: 4px solid var(--clay);
}
.brand { font-family: var(--serif); font-size: 1.5rem; margin: 0; letter-spacing: 0.02em; }
.brand-mark { color: #bcd7e8; }
.brand-sub { margin: 0; font-size: 0.8rem; color: var(--sage); letter-spacing: 0.08em; text-transform: uppercase; }

/* Hero */
.hero { padding: 2.2rem 1.1rem 1rem; }
.hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.9rem, 6vw, 2.7rem);
  line-height: 1.15;
  margin: 0 0 0.7rem;
  color: var(--pine);
}
.lede { font-size: 1.08rem; color: var(--muted); margin: 0 0 1.6rem; max-width: 36rem; }

/* ZIP form */
.zip-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.2rem; }
.zip-label { display: block; font-weight: 700; margin-bottom: 0.5rem; color: var(--pine); }
.zip-row { display: flex; gap: 0.6rem; }
.zip-row input {
  flex: 1; min-width: 0;
  font-size: 1.25rem; padding: 0.7rem 0.9rem;
  border: 2px solid var(--line); border-radius: 10px;
  font-variant-numeric: tabular-nums; letter-spacing: 0.06em;
}
.zip-row input:focus { outline: 3px solid var(--sage); border-color: var(--moss); }
.btn {
  font-size: 1.05rem; font-weight: 700; color: #fff;
  background: var(--clay); border: 0; border-radius: 10px;
  padding: 0.7rem 1.2rem; cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--clay-deep); }
.btn:focus-visible { outline: 3px solid var(--pine); outline-offset: 2px; }
.hint { font-size: 0.85rem; color: var(--muted); margin: 0.6rem 0 0; }
.error { color: #a33327; font-weight: 600; margin: 0.6rem 0 0; }

/* Result card */
.result { margin-top: 1.4rem; }
.frost-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden;
}
.frost-card-head {
  background: var(--pine); color: var(--cream);
  padding: 1rem 1.2rem;
}
.frost-card-head h2 { font-family: var(--serif); margin: 0 0 0.2rem; font-size: 1.35rem; }
.station-line { margin: 0; font-size: 0.88rem; color: var(--sage); }
.station-line strong { color: var(--cream); font-weight: 600; }
.far-note { display:block; margin-top: 0.3rem; color: #e8c87e; }

.frost-dates { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.frost-date { padding: 1.1rem 1.2rem; }
.frost-date + .frost-date { border-left: 1px solid var(--line); }
.frost-date .k { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted); margin: 0 0 0.25rem; }
.frost-date .v { font-family: var(--serif); font-size: 1.9rem; color: var(--pine); margin: 0; line-height: 1.1; }
.frost-date .s { font-size: 0.85rem; color: var(--muted); margin: 0.25rem 0 0; }

.prob { padding: 0 1.2rem 1.2rem; }
.prob h3 { font-size: 0.95rem; color: var(--pine); margin: 1rem 0 0.6rem; }
.prob-row { margin-bottom: 0.55rem; }
.prob-row .plabel { display: flex; justify-content: space-between; font-size: 0.85rem; margin-bottom: 0.2rem; }
.prob-row .plabel b { font-variant-numeric: tabular-nums; }
.prob-bar { height: 12px; border-radius: 6px; background: var(--parchment); position: relative; overflow: hidden; }
.prob-bar i { position: absolute; top: 2px; bottom: 2px; width: 5px; margin-left: -2.5px; border-radius: 3px; }
.prob-bar .p10 { background: var(--clay); }
.prob-bar .p30 { background: #d99a5b; }
.prob-bar .p50 { background: var(--sage); }
.prob-bar .p70 { background: #a9c4b4; }
.prob-bar .p90 { background: #cfddd3; }
.prob-legend { font-size: 0.8rem; color: var(--muted); margin: 0.5rem 0 0; }

.season { padding: 0 1.2rem 1.2rem; }
.season-strip {
  background: var(--parchment); border-radius: 10px;
  padding: 0.9rem 1.1rem; display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap;
}
.season-strip .n { font-family: var(--serif); font-size: 2rem; color: var(--pine); line-height: 1; }
.season-strip .t { font-size: 0.9rem; color: var(--muted); }

.plant { padding: 0 1.2rem 1.2rem; }
.plant h3 { font-size: 0.95rem; color: var(--pine); margin: 1rem 0 0.2rem; }
.plant .psub { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.7rem; }
.plant ul { list-style: none; margin: 0; padding: 0; }
.plant li {
  display: flex; gap: 0.7rem; align-items: baseline;
  padding: 0.55rem 0; border-top: 1px solid var(--line); font-size: 0.95rem;
}
.plant li:first-child { border-top: 0; }
.plant .crop { font-weight: 700; color: var(--pine); white-space: nowrap; }
.plant .when { margin-left: auto; text-align: right; color: var(--clay-deep); font-weight: 600; white-space: nowrap; font-size: 0.88rem; }
.plant .how { display: block; width: 100%; color: var(--muted); font-size: 0.85rem; }
.plant-empty { font-size: 0.92rem; color: var(--muted); }

.card-actions { display: flex; gap: 0.6rem; padding: 0 1.2rem 1.3rem; flex-wrap: wrap; }
.btn-ghost {
  font-size: 0.95rem; font-weight: 600; color: var(--pine);
  background: transparent; border: 2px solid var(--line); border-radius: 10px;
  padding: 0.55rem 1rem; cursor: pointer;
}
.btn-ghost:hover { border-color: var(--moss); }

.no-frost { padding: 1.2rem; }
.no-frost h2 { font-family: var(--serif); color: var(--pine); margin-top: 0; }
.unknown-zip { padding: 1.2rem; }
.unknown-zip h2 { font-family: var(--serif); color: var(--pine); margin-top: 0; }

/* Explainer + FAQ */
.explainer { padding: 2.5rem 1.1rem 0.5rem; }
.explainer h2, .faq h2 { font-family: var(--serif); color: var(--pine); font-size: 1.6rem; margin: 0 0 1rem; }
.cols { display: grid; gap: 1.5rem; }
@media (min-width: 46rem) { .cols { grid-template-columns: 1fr 1fr; } }
.explainer h3 { color: var(--moss); font-size: 1.05rem; margin: 1.2rem 0 0.3rem; }
.explainer h3:first-child { margin-top: 0; }
.explainer p { margin: 0 0 0.8rem; color: var(--ink); }

.faq { padding: 1.5rem 1.1rem 3rem; }
.faq details {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; margin-bottom: 0.6rem; padding: 0.8rem 1rem;
}
.faq summary { font-weight: 700; color: var(--pine); cursor: pointer; }
.faq summary::marker { color: var(--clay); }
.faq details p { margin: 0.5rem 0 0.2rem; font-size: 0.95rem; }

/* Footer */
.site-footer { background: var(--pine); color: var(--sage); padding: 1.6rem 0; font-size: 0.85rem; }
.site-footer strong { color: var(--cream); }
.site-footer .fine { opacity: 0.75; margin-bottom: 0; }

/* Print: one-page planting calendar */
.print-sheet { display: none; }
@media print {
  body { background: #fff; font-size: 12px; }
  .site-header, .hero .zip-form, .explainer, .faq, .site-footer, .card-actions, .skip { display: none !important; }
  .hero { padding: 0; }
  .hero .lede { display: none; }
  .result, .frost-card { box-shadow: none; margin: 0; }
  .print-sheet { display: block; }
  .print-sheet h2 { font-family: var(--serif); color: #000; }
  .print-sheet table { width: 100%; border-collapse: collapse; margin: 0.6rem 0; }
  .print-sheet th, .print-sheet td { border: 1px solid #999; padding: 4px 6px; text-align: left; font-size: 11px; }
  .print-sheet th { background: #eee; }
  @page { margin: 1.5cm; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }