:root {
  --prussian: #0f2a52;
  --deep: #0a1f3f;
  --line: #2c4b7a;
  --paper: #eef3f8;
  --muted: #9db2cf;
  --pass: #8ee3b8;
  --fail: #f4b860;
  --sans: "Schibsted Grotesk", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --measure: 66ch;
}

* { box-sizing: border-box; }

html { background: var(--prussian); }

body {
  margin: 0;
  color: var(--paper);
  font: 400 17px/1.55 var(--sans);
  /* Cyanotype blueprint grid */
  background-color: var(--prussian);
  background-image:
    linear-gradient(rgba(238, 243, 248, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 243, 248, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-font-smoothing: antialiased;
}

:focus-visible { outline: 2px solid var(--pass); outline-offset: 3px; }

h1, h2, h3 { margin: 0; font-weight: 800; letter-spacing: -0.02em; }
p { margin: 0; }
code, pre { font-family: var(--mono); }

/* Header bar */
.bar {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap;
  padding: 1.1rem clamp(1.25rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}
.wordmark { font-weight: 800; letter-spacing: -0.01em; }
.bar-status { color: var(--muted); font-size: 0.9rem; }

main { padding: 0 clamp(1.25rem, 4vw, 3.5rem); max-width: 1320px; margin: 0 auto; }

/* Hero */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem);
  align-items: start; padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem);
}
.hero h1 {
  font-size: clamp(2.3rem, 4.6vw, 4.1rem); line-height: 1.02; letter-spacing: -0.035em; max-width: 16ch;
}
.lede { margin-top: 1.6rem; max-width: 52ch; color: var(--muted); font-size: 1.06rem; }
.headline-status { margin-top: 1.8rem; font-size: 1.15rem; font-weight: 500; max-width: 40ch; }
.headline-status strong { color: var(--pass); font-weight: 700; }

/* Specimen: one problem on the test bench */
.specimen {
  margin: 0; padding: 1.6rem 1.6rem 1.3rem;
  background: var(--deep); border: 1px solid var(--line); border-radius: 4px;
  box-shadow: 10px 10px 0 rgba(10, 31, 63, 0.55);
}
.spec-head { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; flex-wrap: wrap; }
.spec-title { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.015em; }
.spec-tags { color: var(--muted); font-size: 0.88rem; }
.spec-sig {
  display: block; margin-top: 0.9rem; padding: 0.7rem 0.85rem; overflow-x: auto; white-space: pre;
  font-size: 0.82rem; color: var(--paper); background: rgba(238, 243, 248, 0.05); border-radius: 3px;
}
.spec-row { margin-top: 1.4rem; }
.spec-row h3 { font-size: 0.92rem; font-weight: 500; color: var(--muted); letter-spacing: 0; margin-bottom: 0.6rem; }

.cells { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.cells li {
  width: 26px; height: 26px; border: 1px solid var(--line); border-radius: 3px;
  display: grid; place-items: center; font: 500 0.66rem var(--mono); color: transparent;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}
.cells li.on { background: var(--pass); border-color: var(--pass); color: var(--deep); }
.spec-note { margin-top: 0.55rem; font-size: 0.88rem; color: var(--muted); min-height: 1.4em; }

.fakes { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 8px; }
.fakes li {
  font: 400 0.8rem var(--mono); padding: 0.28rem 0.55rem; border: 1px dashed var(--line); border-radius: 3px;
  color: var(--muted); transition: color 200ms ease, border-color 200ms ease, text-decoration-color 200ms ease;
  text-decoration: line-through; text-decoration-color: transparent; text-decoration-thickness: 2px;
}
.fakes li.caught { color: var(--fail); border-color: rgba(244, 184, 96, 0.55); text-decoration-color: var(--fail); }

.ghost {
  margin-top: 1.4rem; font: 500 0.9rem var(--sans); color: var(--paper); cursor: pointer;
  background: none; border: 1px solid var(--line); border-radius: 3px; padding: 0.5rem 0.9rem;
}
.ghost:hover { border-color: var(--muted); }

/* Section blocks */
.block { padding: clamp(2.5rem, 5vw, 4rem) 0; border-top: 1px solid var(--line); }
.block-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 2rem; align-items: baseline; margin-bottom: 2rem; }
.block-head h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); line-height: 1.1; }
.block-head p { color: var(--muted); max-width: 56ch; }

/* Funnel: a real sequence, so the steps are numbered */
.funnel-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 3rem; align-items: start; }
.funnel { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.funnel li {
  counter-increment: step; display: grid; grid-template-columns: 2rem minmax(0, 1fr); gap: 0.2rem 1rem;
  padding: 0.85rem 0; border-bottom: 1px dashed var(--line);
}
.funnel li::before { content: counter(step); grid-row: span 2; font: 500 0.95rem var(--mono); color: var(--muted); padding-top: 0.1rem; }
.f-top { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.f-label { font-weight: 700; }
.f-count { font: 500 1rem var(--mono); }
.f-bar { height: 10px; background: rgba(238, 243, 248, 0.07); border-radius: 2px; overflow: hidden; margin-top: 0.45rem; }
.f-bar span { display: block; height: 100%; background: var(--paper); }
.funnel li:last-child .f-bar span { background: var(--pass); }
.f-lost { grid-column: 2; font-size: 0.86rem; color: var(--fail); }
.f-lost.none { color: var(--muted); }

.ledger { border-left: 1px solid var(--line); padding-left: 1.5rem; }
.ledger dl { margin: 0; display: grid; gap: 1.1rem; }
.ledger dt { color: var(--muted); font-size: 0.86rem; }
.ledger dd { margin: 0.15rem 0 0; font: 500 1.15rem var(--mono); }
.ledger dd small { display: block; font: 400 0.8rem var(--sans); color: var(--muted); margin-top: 0.2rem; }

/* Coverage grid */
.coverage { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 3rem; }
.cov-col { display: grid; grid-template-columns: minmax(0, 1fr) repeat(3, 56px); gap: 4px 6px; align-items: center; align-content: start; }
.cov-h { font-size: 0.78rem; color: var(--muted); text-align: center; }
.cov-t { font-size: 0.88rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding-right: 0.5rem; }
.cov-c {
  height: 22px; border: 1px solid var(--line); border-radius: 2px; display: grid; place-items: center;
  font: 500 0.7rem var(--mono); color: var(--deep);
}
.cov-c.has { background: var(--pass); border-color: var(--pass); }

/* Rejections */
.rej-empty { color: var(--muted); max-width: 60ch; }
.rej-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.9rem; max-width: 820px; }
.rej-list li { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); gap: 1rem; align-items: baseline; }
.rej-n { font: 500 1.25rem var(--mono); color: var(--fail); text-align: right; }
.rej-why { font-weight: 700; }
.rej-desc { color: var(--muted); font-size: 0.92rem; }

/* Browser */
.browser { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 2rem; align-items: start; }
.filters { display: grid; gap: 0.7rem; margin-bottom: 1rem; }
.filters input {
  width: 100%; font: 400 0.95rem var(--sans); color: var(--paper); background: var(--deep);
  border: 1px solid var(--line); border-radius: 3px; padding: 0.55rem 0.7rem;
}
.filters input::placeholder { color: var(--muted); }
.seg { display: flex; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.seg button {
  flex: 1; font: 500 0.85rem var(--sans); color: var(--muted); background: none; border: 0; padding: 0.45rem 0; cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-checked="true"] { background: var(--paper); color: var(--deep); }

.plist { list-style: none; margin: 0; padding: 0; max-height: 640px; overflow-y: auto; border-top: 1px solid var(--line); }
.plist button {
  display: block; width: 100%; text-align: left; background: none; border: 0; border-bottom: 1px solid var(--line);
  color: var(--paper); padding: 0.75rem 0.4rem; cursor: pointer; font: inherit;
}
.plist button:hover { background: rgba(238, 243, 248, 0.04); }
.plist button[aria-current="true"] { background: rgba(142, 227, 184, 0.1); box-shadow: inset 3px 0 0 var(--pass); }
.p-title { display: block; font-weight: 700; font-size: 0.97rem; }
.p-meta { display: block; color: var(--muted); font-size: 0.82rem; margin-top: 0.1rem; }
.plist .none { padding: 1rem 0.4rem; color: var(--muted); }

.detail {
  background: var(--deep); border: 1px solid var(--line); border-radius: 4px; padding: clamp(1.25rem, 3vw, 2rem); min-height: 400px;
}
.d-meta { color: var(--muted); font-size: 0.88rem; margin-bottom: 1.2rem; }
.prose { max-width: var(--measure); }
.prose h1, .prose h2, .prose h3 { font-weight: 700; letter-spacing: -0.015em; margin: 1.4em 0 0.5em; line-height: 1.2; }
.prose h1:first-child, .prose h2:first-child, .prose h3:first-child { margin-top: 0; }
.prose h1, .prose h2 { font-size: 1.45rem; }
.prose h3 { font-size: 1.1rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 0.9em; }
.prose code { font-size: 0.86em; background: rgba(238, 243, 248, 0.07); padding: 0.1em 0.3em; border-radius: 2px; }
.prose pre code { background: none; padding: 0; }
pre {
  margin: 0 0 1em; padding: 0.9rem 1rem; overflow-x: auto; font-size: 0.82rem; line-height: 1.55;
  background: rgba(238, 243, 248, 0.05); border: 1px solid var(--line); border-radius: 3px;
}

.tabs { display: flex; gap: 1.4rem; margin-top: 2rem; border-bottom: 1px solid var(--line); }
.tabs button {
  background: none; border: 0; color: var(--muted); font: 500 0.95rem var(--sans); padding: 0.6rem 0; cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button[aria-selected="true"] { color: var(--paper); border-bottom-color: var(--pass); }
.tabpanel { padding-top: 1.1rem; }
.tests { list-style: none; margin: 0; padding: 0; }
.tests li { font: 400 0.8rem/1.5 var(--mono); padding: 0.45rem 0 0.45rem 1.4rem; border-bottom: 1px dashed var(--line); position: relative; word-break: break-word; }
.tests li::before { content: ""; position: absolute; left: 0; top: 0.85rem; width: 8px; height: 8px; border-radius: 1px; background: var(--pass); }

/* highlight.js tokens in palette */
.hljs-keyword, .hljs-built_in { color: #a9c7ff; }
.hljs-string { color: var(--pass); }
.hljs-number, .hljs-literal { color: var(--fail); }
.hljs-comment { color: #6f86a8; font-style: italic; }
.hljs-title, .hljs-title.function_ { color: #ffffff; font-weight: 500; }
.hljs-params { color: var(--paper); }

.foot {
  border-top: 1px solid var(--line); padding: 2rem clamp(1.25rem, 4vw, 3.5rem) 3rem; color: var(--muted); font-size: 0.88rem;
}
.foot p { max-width: 80ch; }
.foot a { color: var(--paper); }

.load-error { padding: 4rem 0; max-width: 60ch; }

@media (max-width: 960px) {
  .hero, .block-head, .funnel-wrap, .browser, .coverage { grid-template-columns: minmax(0, 1fr); }
  .ledger { border-left: 0; border-top: 1px solid var(--line); padding: 1.5rem 0 0; }
  .ledger dl { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .plist { max-height: 320px; }
}

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