/* Mobile-first field-guide style */
:root {
  --bg: #f3efe6;
  --paper: #fffdf8;
  --ink: #1a1814;
  --muted: #5e574c;
  --line: #d8d0c2;
  --accent: #9a4a12;
  --accent-soft: #f3e2d1;
  --ok: #0f5c38;
  --ok-bg: #e6f4ec;
  --warn: #8a3b10;
  --warn-bg: #fdeee4;
  --bad: #8f1d1d;
  --bad-bg: #fdecec;
  --focus: #1f4e79;
  --shadow: 0 1px 2px rgba(40, 30, 10, 0.06), 0 8px 24px rgba(40, 30, 10, 0.06);
  --radius: 14px;
  --max: 46rem;
  --sans: "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.16em; }
a:hover { color: var(--ink); }
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus {
  left: 0.75rem; top: 0.75rem; z-index: 10;
  background: var(--paper); padding: 0.5rem 0.75rem; border-radius: 8px;
}
.site-header { background: var(--ink); color: #f6f1e8; padding: 0.85rem 1rem; }
.site-header .wrap, .site-footer .wrap, main.wrap {
  width: min(100%, var(--max));
  margin: 0 auto;
}
.brand {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  font-size: 1.05rem;
  display: inline-block;
  max-width: 100%;
}
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  margin-top: 0.55rem;
  font-size: 0.95rem;
}
.site-header nav a { color: #f0e6d6; text-decoration: none; }
.site-header nav a:hover,
.site-header nav a[aria-current="page"] { color: #fff; text-decoration: underline; }
main.wrap { padding: 1.25rem 1rem 3rem; overflow-x: hidden; }
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 1rem 2.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin-bottom: 0.7rem; }
h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 0.6rem; }
h2 { font-size: 1.25rem; margin: 1.6rem 0 0.5rem; }
h3 { font-size: 1.08rem; margin: 1.25rem 0 0.4rem; }
.lede { font-size: 1.12rem; color: var(--muted); margin: 0 0 1.25rem; }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1rem 1.15rem;
  margin: 0 0 1rem;
}
.tool-grid { display: grid; gap: 0.85rem; }
@media (min-width: 640px) {
  .tool-grid { grid-template-columns: 1fr 1fr 1fr; }
  h1 { font-size: 2rem; }
}
.tool-card {
  display: flex;
  flex-direction: column;
  color: inherit;
  text-decoration: none;
  min-height: 9rem;
}
.tool-card h2 { margin: 0 0 0.35rem; font-size: 1.15rem; color: var(--ink); }
.tool-card p { margin: 0; color: var(--muted); flex: 1; }
.tool-card .go { margin-top: 0.75rem; color: var(--accent); font-weight: 650; }
form { display: grid; gap: 0.85rem; }
.field { display: grid; gap: 0.3rem; }
.field > span, .field > label, legend, .field-label {
  font-weight: 650;
  font-size: 0.95rem;
}
.hint { font-weight: 500; color: var(--muted); font-size: 0.88rem; }
input[type="text"], input[type="number"], select {
  width: 100%;
  min-height: 3.05rem;
  padding: 0.55rem 0.75rem;
  border: 1.5px solid #c9c0b1;
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 1.125rem;
}
input:focus, select:focus, button:focus-visible, a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  min-height: 2.6rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1.5px solid #c9c0b1;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.chip.is-on {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.row-2, .row-3 { display: grid; gap: 0.75rem; }
@media (min-width: 520px) {
  .row-2 { grid-template-columns: 1fr 1fr; }
  .row-3 { grid-template-columns: 1fr 1fr 1fr; }
}
.results {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1.5px solid var(--line);
  background: #fff;
  margin: 0 0 1rem;
}
.results h2 { margin: 0 0 0.7rem; }
.metrics { display: grid; gap: 0.6rem; }
.metric {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.45rem;
}
.metric:last-of-type { border-bottom: 0; padding-bottom: 0; }
.metric .k { color: var(--muted); }
.metric .v {
  font-family: var(--mono);
  font-weight: 650;
  font-size: 1.08rem;
  text-align: right;
  overflow-wrap: anywhere;
}
.banner {
  margin-top: 0.85rem;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  font-weight: 650;
}
.banner.ok { background: var(--ok-bg); color: var(--ok); }
.banner.warn { background: var(--warn-bg); color: var(--warn); }
.banner.bad { background: var(--bad-bg); color: var(--bad); }
.notes { margin: 0.85rem 0 0; color: var(--muted); font-size: 0.92rem; }
.disclaimer-box {
  background: #f7f1e8;
  border-left: 4px solid var(--accent);
  padding: 0.8rem 0.9rem;
  border-radius: 0 10px 10px 0;
  margin: 1rem 0 0;
}
.callout {
  background: var(--warn-bg);
  border: 1px solid #efd0b8;
  border-radius: 10px;
  padding: 0.8rem 0.9rem;
  margin: 0 0 1rem;
}
.empty { color: var(--muted); }
.prose p { margin: 0.7rem 0; }
.prose ul, .prose ol { margin: 0.4rem 0 0.85rem; padding-left: 1.2rem; }
.prose li { margin: 0.25rem 0; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 0.8rem 0 1rem;
  background: var(--paper);
}
.prose th, .prose td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.55rem;
  text-align: left;
}
.prose th { background: #efe8dc; }
.prose td:last-child, .prose th:last-child { text-align: right; white-space: nowrap; }
.prose pre, .prose code, .mono {
  font-family: var(--mono);
  font-size: 0.92em;
}
.prose pre {
  overflow-x: auto;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.7rem 0.8rem;
}
@media (max-width: 519px) {
  .prose table { display: block; overflow-x: auto; }
}
[hidden] { display: none !important; }