/* ModelWatch — AI model pricing tracker.
   Design intent: an instrument, not a landing page. The comparison table IS the hero; there is
   no marketing illustration anywhere. Monospace leads (a price tape is monospaced — using it for
   headlines, not just data, is the point of view). Committed dark: this is a tool you leave open
   on a second monitor, so it paints one deliberate look rather than following the OS.
   Colour is semantic, not decorative: teal = price fell (good for the buyer), coral = price rose. */

:root{
  --bg:#0F1417; --surface:#151D21; --surface-2:#1C262B; --line:#28343A; --line-soft:#1F2A2F;
  --ink:#DEE7EA; --ink-2:#94A6AE; --ink-3:#7E8F97;
  --down:#3FD0C9; --up:#FF6B5A; --flat:#7B909A;
  --focus:#3FD0C9;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Segoe UI Mono","Roboto Mono",Menlo,Consolas,monospace;
  --ui:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r:2px;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--ui);font-size:15px;line-height:1.55;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--down);text-decoration:none;border-bottom:1px solid transparent}
a:hover{border-bottom-color:currentColor}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

/* ---- shell ------------------------------------------------------------- */
.wrap{max-width:1400px;margin:0 auto;padding:0 20px}
.masthead{border-bottom:1px solid var(--line);background:var(--surface);position:sticky;top:0;z-index:40}
.masthead .wrap{display:flex;align-items:baseline;gap:28px;height:52px}
.logo{font-family:var(--mono);font-size:16px;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.logo b{color:var(--down);font-weight:600}
.nav{display:flex;gap:20px;font-size:13.5px}
.nav a{color:var(--ink-2);border:0}
.nav a:hover,.nav a[aria-current]{color:var(--ink)}
.masthead .spacer{margin-left:auto}
.stamp{font-family:var(--mono);font-size:12px;color:var(--ink-3)}

/* ---- the hero IS the table --------------------------------------------- */
.board{padding:22px 0 8px}
.board h1{
  font-family:var(--mono);font-size:clamp(24px,3.4vw,38px);font-weight:600;
  letter-spacing:-.03em;line-height:1.1;margin:0 0 8px;color:var(--ink);
}
.board p.lede{margin:0 0 18px;color:var(--ink-2);max-width:62ch;font-size:15.5px}
.counts{display:flex;gap:26px;flex-wrap:wrap;font-family:var(--mono);font-size:13px;color:var(--ink-3);margin-bottom:18px}
.counts b{color:var(--ink);font-weight:600}

.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;padding:12px 0;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);margin-bottom:0}
.filters input,.filters select{
  font-family:var(--mono);font-size:13px;background:var(--surface-2);color:var(--ink);
  border:1px solid var(--line);border-radius:var(--r);padding:7px 10px;min-height:36px;
}
.filters input{min-width:240px}
.filters input::placeholder{color:var(--ink-3)}

.tablewrap{overflow-x:auto;border:1px solid var(--line);border-top:0}
table.grid{width:100%;border-collapse:collapse;font-size:13.5px}
table.grid th{
  /* top:0, NOT the masthead height. `.tablewrap` has overflow-x:auto, which makes it a scroll
     container and therefore the containing block for sticky — so a 52px offset pushed the
     header DOWN over the first data row instead of clearing the masthead. */
  position:sticky;top:0;background:var(--surface-2);z-index:10;
  font-family:var(--mono);font-weight:600;font-size:12px;color:var(--ink-2);
  text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.grid th.num,table.grid td.num{text-align:right;font-family:var(--mono)}
table.grid td{padding:9px 12px;border-bottom:1px solid var(--line-soft);vertical-align:baseline}
table.grid tbody tr:hover{background:var(--surface)}
table.grid .id{font-family:var(--mono);color:var(--ink)}
table.grid .prov{color:var(--ink-2);font-size:12.5px}
.ctx{color:var(--ink-2)}

/* price movement — the only colour on the page that carries meaning */
.delta{font-family:var(--mono);font-size:12.5px}
.delta--down{color:var(--down)}
.delta--up{color:var(--up)}
.delta--flat{color:var(--flat)}

/* ---- change feed as a diff --------------------------------------------- */
.diff{border:1px solid var(--line);margin:0 0 28px}
.diff__row{display:grid;grid-template-columns:18px 1fr;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line-soft);font-size:13.5px}
.diff__row:last-child{border-bottom:0}
.diff__gutter{font-family:var(--mono);color:var(--ink-3);text-align:center}
.diff__row--down .diff__gutter{color:var(--down)}
.diff__row--up .diff__gutter{color:var(--up)}
.diff__what{font-family:var(--mono);color:var(--ink)}
.diff__from{color:var(--ink-3);text-decoration:line-through}
.diff__to{font-family:var(--mono)}
.diff__row--down .diff__to{color:var(--down)}
.diff__row--up .diff__to{color:var(--up)}
.diff__when{color:var(--ink-3);font-size:12px;font-family:var(--mono)}

/* ---- record (single model) --------------------------------------------- */
.rec{padding:24px 0 40px;max-width:900px}
.rec h1{font-family:var(--mono);font-size:clamp(21px,2.6vw,30px);font-weight:600;letter-spacing:-.02em;margin:0 0 4px}
.rec .sub{color:var(--ink-2);margin:0 0 22px;font-size:14px}
.kv{display:grid;grid-template-columns:minmax(140px,220px) 1fr;border-top:1px solid var(--line)}
.kv dt{padding:10px 0;color:var(--ink-2);font-size:13px;border-bottom:1px solid var(--line-soft)}
.kv dd{padding:10px 0;margin:0;font-family:var(--mono);border-bottom:1px solid var(--line-soft)}
.locked{color:var(--ink-3);font-style:normal}
.locked::before{content:"—— ";color:var(--line)}

/* ---- pricing ------------------------------------------------------------ */
.tiers{display:grid;gap:0;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));border:1px solid var(--line);margin:20px 0 36px}
.tier{padding:20px;border-right:1px solid var(--line)}
.tier:last-child{border-right:0}
.tier__n{font-family:var(--mono);font-size:14px;color:var(--ink);margin:0 0 6px}
.tier__p{font-family:var(--mono);font-size:30px;letter-spacing:-.03em;margin:0 0 4px}
.tier__p small{font-size:13px;color:var(--ink-3);letter-spacing:0}
.tier ul{list-style:none;margin:14px 0 0;padding:0;font-size:13px;color:var(--ink-2)}
.tier li{padding:4px 0;border-bottom:1px solid var(--line-soft)}
.tier--anchor{background:var(--surface)}

.btn{display:inline-block;font-family:var(--mono);font-size:13.5px;padding:9px 16px;border:1px solid var(--down);color:var(--down);background:transparent;border-radius:var(--r);cursor:pointer;min-height:40px}
.btn:hover{background:var(--down);color:var(--bg)}
.btn--quiet{border-color:var(--line);color:var(--ink-2)}
.btn--quiet:hover{background:var(--surface-2);color:var(--ink)}

/* ---- prose (about / legal) ---------------------------------------------- */
.prose{max-width:70ch;padding:24px 0 48px}
.prose h1{font-family:var(--mono);font-size:26px;font-weight:600;letter-spacing:-.02em;margin:0 0 16px}
.prose h2{font-family:var(--mono);font-size:16px;font-weight:600;margin:30px 0 8px;color:var(--ink)}
.prose p,.prose li{color:var(--ink-2);font-size:15px}
.prose a{color:var(--down)}

/* ---- footer ------------------------------------------------------------- */
.foot{border-top:1px solid var(--line);margin-top:40px;padding:22px 0 40px;color:var(--ink-3);font-size:13px}
.foot nav{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:10px}
.foot a{color:var(--ink-2);border:0}
.foot a:hover{color:var(--ink)}

/* ---- shared engine chrome ----------------------------------------------- */
.preview-banner{background:var(--surface-2);border-bottom:1px solid var(--line);padding:8px 20px;font-size:13px;color:var(--ink-2);display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.preview-banner__tag{font-family:var(--mono);color:var(--down);font-weight:600}
.ad-slot{display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px dashed var(--line);color:var(--ink-3);font-family:var(--mono);font-size:11px;margin:18px 0;min-height:96px}
.ad-slot--header{min-height:90px}
.ad-slot--sidebar{min-height:600px;margin:0}
.ad-slot--anchor{position:sticky;bottom:0;min-height:60px;margin:0}
.cra-notice{display:none} /* modelwatch is not a records product */
.admin-bar{position:sticky;top:52px;z-index:50;display:flex;gap:14px;align-items:center;flex-wrap:wrap;background:#241C0B;border-bottom:1px solid #4A3A14;color:#F0D68A;padding:7px 20px;font-family:var(--mono);font-size:12px}
.admin-bar select,.admin-bar input{background:#161009;color:#F0D68A;border:1px solid #4A3A14;border-radius:var(--r);font-family:var(--mono);font-size:12px;padding:3px 6px}
.admin-bar__who{font-weight:600}
.admin-bar__facts{margin-left:auto;display:flex;gap:14px;color:#C7AE6A;flex-wrap:wrap}
.admin-bar__fact b{color:#F0D68A;font-weight:600}

@media (max-width:720px){
  .masthead .wrap{height:auto;padding:10px 20px;flex-wrap:wrap;gap:10px 18px}
  .kv{grid-template-columns:1fr}
  .kv dt{padding-bottom:0;border-bottom:0}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}