/* Instrument UI (docs/specs/2026-09-23-instrument-ui-tokens.md §6.1). Scoped to /measure only;
   the studio pages keep their own look. */
:root {
  --bg: #0A0B0F;
  --bg-elevated: #0F1116;
  --surface: #14161D;
  --line: #23262F;
  --line-soft: #1A1C24;
  --text: #E8E9ED;
  --text-soft: #8B8E9C;
  --text-faint: #5A5D68;
  --accent: #3FD6C6;
  --accent-soft: rgba(63, 214, 198, .10);
  --accent-line: rgba(63, 214, 198, .35);
  --flag: #E0A64D;
  --flag-soft: rgba(224, 166, 77, .10);
  --flag-line: rgba(224, 166, 77, .35);
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 8px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--bg);
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.045) 1px, transparent 0);
  background-size: 26px 26px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
::selection { background: var(--accent); color: #04211D; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.wrap.wide { max-width: 1180px; }

.top {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(10, 11, 15, .85);
}
.top .wrap { display: flex; flex-wrap: wrap; gap: 6px 22px; align-items: center; padding-top: 14px; padding-bottom: 14px; }
.brand { font-family: var(--font-mono); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--text); text-decoration: none; margin-right: auto; }
.brand span { color: var(--accent); }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.top nav a { font-family: var(--font-mono); font-size: 13px; color: var(--text-soft); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--accent); }

main { padding: 56px 0 72px; }
.eyebrow { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.01em; margin: 0 0 .5em; line-height: 1.2; }
h1 { font-size: clamp(1.9rem, 5vw, 2.7rem); font-weight: 700; }
h2 { font-size: 1.35rem; margin-top: 2.2em; }
h3 { font-size: 1.08rem; }
p { margin: 0 0 1em; color: var(--text); }
.lede { font-size: 1.15rem; color: var(--text); }
.soft { color: var(--text-soft); }
.mono { font-family: var(--font-mono); font-size: .92em; }
strong { font-weight: 600; }

.figures { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 28px 0; }
.figure { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.figure .num { font-family: var(--font-mono); font-size: 1.6rem; font-weight: 500; color: var(--accent); display: block; }
.figure .num.cost { color: var(--flag); }
.figure .lbl { font-size: 14px; color: var(--text-soft); }

.cards { display: grid; gap: 14px; margin: 24px 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.card h3 { margin-bottom: .3em; }
.price { font-family: var(--font-mono); color: var(--accent); font-size: 15px; margin: 0 0 .7em; }
.card p:last-child { margin-bottom: 0; }

.note { border: 1px solid var(--flag-line); background: var(--flag-soft); border-radius: var(--radius); padding: 16px 18px; margin: 24px 0; }
.note p:last-child, .note ul:last-child { margin-bottom: 0; }
ul, ol { padding-left: 1.2em; margin: 0 0 1em; }
li { margin-bottom: .45em; }

.rules { counter-reset: rule; list-style: none; padding: 0; }
.rules li { border-top: 1px solid var(--line); padding: 18px 0 8px; margin: 0; }
.rules li strong { display: block; margin-bottom: 4px; }

.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); margin: 24px 0; background: var(--bg-elevated); }
table { border-collapse: collapse; width: 100%; min-width: 1560px; font-size: 14px; }
td:nth-child(1) { min-width: 190px; }
td:nth-child(3), td:nth-child(4) { min-width: 170px; }
td.harm, td.work { min-width: 200px; }
td:nth-child(10) { min-width: 300px; }
th, td { text-align: left; vertical-align: top; padding: 11px 13px; border-bottom: 1px solid var(--line-soft); }
th { font-family: var(--font-mono); font-size: 11.5px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--text-soft); background: var(--surface); }
td .mono { font-size: 12.5px; color: var(--text-soft); }
td.harm { color: var(--accent); font-family: var(--font-mono); font-size: 13px; }
td.work { color: var(--flag); font-family: var(--font-mono); font-size: 13px; }
tr:last-child td { border-bottom: 0; }

.cta { display: inline-block; margin-top: 8px; padding: 11px 18px; border: 1px solid var(--accent-line); background: var(--accent-soft); border-radius: var(--radius); color: var(--accent); text-decoration: none; font-weight: 500; }
.cta:hover { background: rgba(63, 214, 198, .18); }

footer { border-top: 1px solid var(--line-soft); padding: 28px 0 40px; font-size: 14px; color: var(--text-faint); }
footer p { color: var(--text-faint); margin: 0 0 .4em; }
footer a { color: var(--text-soft); }

/* Section rhythm: mono label, headline, one line, link, panel. */
.sec { margin-top: 3.4em; }
.sec > .eyebrow { margin-bottom: 8px; }
.sec > h2 { margin-top: 0; }
.fine { font-size: 13.5px; color: var(--text-faint); margin-top: 10px; }
sup { font-size: .7em; color: var(--flag); }

/* 01 · old loop vs measured loop */
.loop { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 22px 0 0; }
.loop-col { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px 8px; background: var(--surface); }
.loop-col.new { border-color: var(--accent-line); background: linear-gradient(180deg, var(--accent-soft), transparent 70%), var(--surface); }
.loop-title { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; margin: 0 0 12px; color: var(--text-faint); }
.loop-col.new .loop-title { color: var(--accent); }
.loop ol { list-style: none; counter-reset: step; padding: 0; margin: 0; }
.loop li { counter-increment: step; position: relative; padding: 0 0 12px 34px; font-size: 15px; }
.loop li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 1px; font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }
.loop .old li { color: var(--text-soft); }
.loop .new li::before { color: var(--accent); }

/* 03 · the deliverable: the record stays on white, as it really is (tokens spec §1). */
.doc { margin: 22px 0 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.doc-bar { display: flex; justify-content: space-between; gap: 12px; padding: 9px 14px; background: var(--surface); border-bottom: 1px solid var(--line); font-family: var(--font-mono); font-size: 12px; color: var(--text-soft); }
.doc-bar span:last-child { color: var(--flag); text-transform: uppercase; letter-spacing: .08em; }
.doc-page { background: #fff; color: #1a1a1a; font-family: system-ui, -apple-system, sans-serif; font-size: 14px; line-height: 1.5; padding: 20px 22px 18px; }
.doc-page p { color: #1a1a1a; margin: 0 0 .8em; }
.doc-h1 { font-size: 1.25rem; font-weight: 700; }
.doc-h1 small { font-weight: 400; color: #666; font-size: .75em; }
.doc-h2 { font-size: 1.05rem; font-weight: 700; margin-top: 1em !important; }
.doc-prov { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0 0 1em; font-size: 12.5px; }
.doc-prov dt { font-weight: 600; }
.doc-prov dd { margin: 0; min-width: 0; }
.doc-prov code, .term code { overflow-wrap: anywhere; word-break: break-all; }
.doc-prov code { font-size: 11.5px; }
.doc-tablewrap { overflow-x: auto; }
.doc-table { min-width: 0; width: 100%; font-size: 13px; }
.doc-table th, .doc-table td { border: 1px solid #ccc; padding: 6px 8px; color: #1a1a1a; background: #fff; font-family: inherit; font-size: 13px; letter-spacing: 0; text-transform: none; }
.doc-table th { font-weight: 600; }
.doc-table td:nth-child(n) { min-width: 0; }

/* 04 · command and output */
.term { margin: 22px 0 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elevated); overflow: hidden; }
.term-bar { display: flex; align-items: center; gap: 12px; padding: 9px 14px; border-bottom: 1px solid var(--line-soft); font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }
.dots { display: inline-flex; gap: 6px; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: block; }
.term pre { margin: 0; padding: 14px 16px; font-family: var(--font-mono); font-size: 12.5px; line-height: 1.6; white-space: pre-wrap; color: var(--text); }
.prompt { color: var(--accent); }
.term-out { border-top: 1px dashed var(--line); }
.term-out pre { color: var(--text-soft); }
.term-label { margin: 0; padding: 10px 16px 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }

/* Trust strip: what we can show instead of badges we do not hold. */
.trust { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; margin: 3.4em 0 0; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.trust-cell { background: var(--bg-elevated); padding: 16px 18px; font-family: var(--font-mono); font-size: 13px; line-height: 1.45; color: var(--text); }
.trust-cell::before { content: ""; display: block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-bottom: 10px; }

@media (max-width: 520px) {
  body { font-size: 16px; }
  main { padding: 36px 0 56px; }
  .loop { grid-template-columns: 1fr; }
  .doc-prov { grid-template-columns: 1fr; gap: 0 0; }
  .doc-prov dd { margin-bottom: 6px; }
}