/* Layout: field-guide pages. A 68ch reading column, figures that break wider, margin "specimen notes" on wide screens. */
:root {
  --bg: #f5f6f2;
  --surface: #fbfcf9;
  --ink: #17201b;
  --ink-2: #364039;
  --muted: #5a655e;
  --rule: #d8ddd4;
  --accent: #1d6a50;
  --accent-soft: #e2eee7;
  --alert: #b3261e;
  --alert-soft: #fbe9e7;
  --draft: #8a5a00;
  --draft-soft: #fdf3dd;
  --elapid: #2f6fa3;
  --viperid: #c2572b;
  --colubrid: #8f3f8f;
  --font-display: "Zilla Slab", "Rockwell", "Georgia", serif;
  --font-body: "Public Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-data: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --radius: 10px;
  --h-transform: none;
  --h-tracking: -0.01em;
  --h-weight: 700;
  --measure: 68ch;
  --wide: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #151916; --surface: #1c211e; --ink: #edf1ec; --ink-2: #ccd4ce; --muted: #a3aea6;
    --rule: #323a34; --accent: #62c29b; --accent-soft: #1f3129; --alert: #ff7b6e; --alert-soft: #3a1f1c;
    --draft: #f0b64a; --draft-soft: #33291a;
    --elapid: #4f90c8; --viperid: #d9683a; --colubrid: #b064b0;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #151916; --surface: #1c211e; --ink: #edf1ec; --ink-2: #ccd4ce; --muted: #a3aea6;
  --rule: #323a34; --accent: #62c29b; --accent-soft: #1f3129; --alert: #ff7b6e; --alert-soft: #3a1f1c;
  --draft: #f0b64a; --draft-soft: #33291a;
  --elapid: #4f90c8; --viperid: #d9683a; --colubrid: #b064b0;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { font-size: 106.25%; }   /* 17px base: every rem on the site scales with this */
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 1rem/1.65 var(--font-body); }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); font-weight: var(--h-weight); letter-spacing: var(--h-tracking); text-transform: var(--h-transform); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.1rem); font-weight: 600; }
h3 { font-size: 1.35rem; font-weight: 700; }
.col > h3:not(:first-child), section > h3:not(:first-child) { margin-top: 10px; }   /* a sub-heading starts a new block */
p { margin: 0; }
.sci { font-family: var(--font-display); font-style: italic; font-weight: 500; }
.mono, .num { font-family: var(--font-data); font-variant-numeric: tabular-nums; }
.eyebrow { font: 700 0.76rem/1.3 var(--font-body); letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted); }
.lede { font-size: 1.22rem; line-height: 1.55; color: var(--ink-2); max-width: var(--measure); }

/* Draft banner */
.draft-bar { background: var(--draft-soft); color: var(--draft); font-size: 0.82rem; padding: 6px 16px; text-align: center; border-bottom: 1px solid var(--rule); }

/* Header */
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--bg); border-bottom: 1px solid var(--rule); }
.site-head .in { max-width: var(--wide); margin: 0 auto; padding: 10px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; }
.brand { font: 700 1.25rem/1 var(--font-display); color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.brand svg { width: 22px; height: 22px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 0.93rem; flex: 1; }
.nav a { color: var(--ink-2); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.nav a:hover { color: var(--ink); }
@media (max-width: 640px) {
  .brand { order: 1; flex: 1; }
  .bitten { order: 2; }
  .nav { order: 3; flex: 1 1 100%; flex-wrap: nowrap; overflow-x: auto; gap: 18px; white-space: nowrap; }
}

/* Bitten panel */
.bitten { position: relative; }
.bitten summary { list-style: none; cursor: pointer; background: var(--alert); color: var(--bg); font-weight: 700; font-size: 0.9rem; padding: 7px 14px; border-radius: 999px; }
.bitten summary::-webkit-details-marker { display: none; }
.bitten[open] summary { box-shadow: 0 0 0 3px var(--alert-soft); }
.bitten .panel { position: absolute; right: 0; top: calc(100% + 10px); width: min(360px, calc(100vw - 32px)); background: var(--surface); border: 2px solid var(--alert); border-radius: var(--radius); padding: 16px; display: grid; gap: 10px; font-size: 0.93rem; box-shadow: 0 12px 30px rgba(0,0,0,.18); }
.bitten .panel h3 { color: var(--alert); }
.bitten .panel ul { margin: 0; padding-left: 1.1em; display: grid; gap: 4px; }
.placeholder { font-family: var(--font-data); font-size: 0.85rem; background: var(--draft-soft); color: var(--draft); padding: 2px 6px; border-radius: 4px; }

/* Page shell */
main { max-width: var(--wide); margin: 0 auto; padding: 40px 16px 72px; display: grid; gap: 56px; }
.col { max-width: var(--measure); display: grid; gap: 16px; }
section { display: grid; gap: 18px; min-width: 0; }
.with-notes { display: grid; grid-template-columns: minmax(0, var(--measure)) minmax(0, 1fr); gap: 16px 48px; align-items: start; }
.with-notes > .col { grid-column: 1; }
.note { grid-column: 2; font-size: 0.94rem; color: var(--ink-2); border-left: 2px solid var(--rule); padding-left: 14px; display: grid; gap: 6px; }
.note b { color: var(--ink); }
@media (max-width: 860px) { .with-notes { grid-template-columns: minmax(0,1fr); } .note { grid-column: 1; } }

.editor { background: var(--draft-soft); border: 1px dashed var(--draft); border-radius: 8px; padding: 12px 14px; font-size: 0.92rem; color: var(--ink); display: grid; gap: 4px; max-width: var(--measure); }
.editor .eyebrow { color: var(--draft); }

.figure { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 18px; display: grid; gap: 12px; min-width: 0; }
.figure figcaption, .caption { font-size: 0.9rem; color: var(--ink-2); max-width: var(--measure); }
.chart-wrap { overflow-x: auto; }
svg text { font-family: var(--font-body); }
.tick { fill: var(--muted); font-size: 12px; }
.axis-title { fill: var(--ink-2); font-size: 13px; font-weight: 600; }
.gridline { stroke: var(--rule); stroke-width: 1; }

.tip { position: fixed; pointer-events: none; z-index: 50; background: var(--ink); color: var(--bg); font-size: 0.8rem; line-height: 1.4; padding: 8px 10px; border-radius: 6px; max-width: 260px; opacity: 0; transition: opacity .12s; }
.tip.on { opacity: 1; }
.tip b { font-family: var(--font-display); font-size: 0.95rem; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 0.9rem; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.94rem; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-size: 0.76rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); font-weight: 700; }
tr:last-child td { border-bottom: 0; }
td.r, th.r { text-align: right; }

.tier { display: inline-grid; place-items: center; width: 1.45em; height: 1.45em; border-radius: 4px; font: 700 0.75rem/1 var(--font-data); border: 1.5px solid currentColor; }
.tier.A { color: var(--accent); } .tier.B { color: var(--elapid); } .tier.C { color: var(--ink-2); } .tier.D { color: var(--alert); }
.chip { display: inline-block; font-size: 0.84rem; padding: 2px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--ink); text-decoration: none; margin: 0 4px 4px 0; }
a.chip:hover { outline: 1px solid var(--accent); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 18px; display: grid; gap: 8px; align-content: start; text-decoration: none; color: var(--ink); }
a.card:hover { border-color: var(--accent); }
.card p { color: var(--ink-2); font-size: 0.97rem; }

.site-foot { border-top: 1px solid var(--rule); }
.site-foot .in { max-width: var(--wide); margin: 0 auto; padding: 20px 16px 32px; font-size: 0.88rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Species pages */
.crumbs { font-size: 0.9rem; color: var(--muted); }
.crumbs a { color: var(--ink-2); }
.crumbs-row { display: flex; flex-wrap: wrap; gap: 10px 20px; justify-content: space-between; align-items: center; }
.pager { display: flex; gap: 8px; }
.pager a { display: grid; gap: 1px; padding: 6px 12px; border: 1px solid var(--rule); border-radius: var(--radius); text-decoration: none; color: var(--ink); font-size: 0.88rem; line-height: 1.25; min-width: 0; }
.pager a:hover { border-color: var(--accent); }
.pager a span { font-size: 0.74rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.pager a[rel="next"] { text-align: right; }
main > .pager { justify-content: space-between; }
main > .pager a { flex: 1 1 0; max-width: 320px; }
.top { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 28px; align-items: start; }
@media (max-width: 820px) { .top { grid-template-columns: minmax(0,1fr); } }
.ident { display: grid; gap: 10px; }
.ident .sci { font-size: 1.6rem; color: var(--ink-2); line-height: 1.2; }
.aka { color: var(--muted); font-size: 0.93rem; }
.photo-fig { margin: 0; display: grid; gap: 6px; }
.photo { aspect-ratio: 4 / 3; max-width: 100%; border-radius: var(--radius); border: 1px dashed var(--draft); background: repeating-linear-gradient(135deg, var(--draft-soft) 0 12px, var(--surface) 12px 24px); display: grid; place-items: center; text-align: center; padding: 20px; color: var(--draft); font-size: 0.9rem; }
.facts { display: grid; grid-template-columns: max-content minmax(0,1fr); gap: 8px 18px; margin: 0; font-size: 1rem; }
.facts dt { color: var(--ink-2); font-size: 0.76rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; padding-top: 2px; }
.facts dd { margin: 0; }
.summary { font: 500 1.2rem/1.5 var(--font-display); max-width: 60ch; }
.scores { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.score { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 18px; display: grid; gap: 14px; align-content: start; }
.score .head { display: flex; justify-content: space-between; align-items: end; gap: 12px; border-bottom: 1px solid var(--rule); padding-bottom: 12px; }
.big { font: 700 2.6rem/1 var(--font-display); font-variant-numeric: tabular-nums; }
.rank { font-size: 0.88rem; color: var(--ink-2); text-align: right; white-space: nowrap; }
.rank b { font-family: var(--font-data); font-size: 1rem; color: var(--ink); }
.dim { display: grid; gap: 4px; }
.dim .row { display: flex; justify-content: space-between; font-size: 0.9rem; font-weight: 600; }
.track { height: 8px; border-radius: 4px; background: var(--rule); overflow: hidden; }
.fill { height: 100%; border-radius: 4px; background: var(--ink-2); }
.dim p { font-size: 0.92rem; color: var(--ink-2); }
.comb { background: var(--accent-soft); border: 0; }
.comb .fill { background: var(--accent); }
.grade { display: grid; grid-template-columns: auto minmax(0,1fr); gap: 14px; align-items: start; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px; max-width: var(--measure); }
.grade .tier { width: 2.4rem; height: 2.4rem; font-size: 1.2rem; border-width: 2px; }
.photo-img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); background: var(--rule); display: block; }
.photo-none { border: 1px solid var(--rule); background: var(--surface); color: var(--muted); }