runtime/viewer/viewer.css

:root {
  color-scheme: light dark;
  --bg: light-dark(#f6f6f7, #18191c);
  --panel: light-dark(#ffffff, #222328);
  --text: light-dark(#24252a, #f0f0f2);
  --secondary: light-dark(#62646c, #b4b5be);
  --border: light-dark(#dedee3, #41424b);
  --soft: light-dark(#eeeef1, #2d2e35);
  --accent: light-dark(#ebebf0, #30313b);
  --strong: light-dark(#343642, #d0d1e2);
  --primary: light-dark(#343642, #d0d1e2);
  --on-primary: light-dark(#ffffff, #20212a);
  --attention: light-dark(#fbefd7, #473b25);
  --radius: 14px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 system-ui, sans-serif; overflow-wrap: anywhere; }
button, input, select { font: inherit; color: inherit; }
button, summary { cursor: pointer; }
button { border: 1px solid var(--border); border-radius: 8px; padding: 10px 15px; background: var(--panel); text-align: left; }
button:hover { background: var(--soft); border-color: var(--strong); }
button:disabled { cursor: default; opacity: .65; }
button.primary { color: var(--on-primary); background: var(--primary); border-color: var(--primary); }
button.text-button { padding: 5px 0; color: var(--strong); background: transparent; border: 0; text-decoration: underline; text-underline-offset: 3px; }
:is(button, input, select, summary, a):focus-visible { outline: 3px solid var(--strong); outline-offset: 4px; }
:is(h1, main):focus { outline: none; }
a { color: var(--strong); }
.skip { position: absolute; left: 12px; top: -100px; background: var(--panel); padding: 10px; z-index: 5; }
.skip:focus { top: 10px; }
.top { min-height: 89px; padding: 18px 32px; border-bottom: 1px solid var(--border); background: var(--panel); display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; min-width: 180px; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 37px; border-radius: 11px 11px 11px 3px; color: var(--on-primary); background: var(--primary); font: italic 28px/1 Georgia, serif; }
.wordmark { font: 500 29px/1.1 Georgia, serif; letter-spacing: -1px; }
.project-heading { display: grid; gap: 0; min-width: 0; }
.project-heading .eyebrow { font-size: 11px; }
#project-name { font-size: 15px; font-weight: 500; }
.snapshot-info { position: relative; margin-left: auto; flex-shrink: 0; border: 0; padding: 0; }
.snapshot-info > summary { font-size: 12px; color: var(--secondary); display: flex; align-items: center; gap: 7px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; }
.snapshot-info > summary::after { content: '⌄'; }
#header-date { border-left: 1px solid var(--border); padding-left: 8px; }
.status-dot { height: 6px; width: 6px; flex-shrink: 0; background: var(--strong); border-radius: 50%; }
.snapshot-popover { position: absolute; right: 0; top: calc(100% + 10px); width: min(380px, 80vw); padding: 22px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 12px 30px #00000012; z-index: 4; }
.snapshot-popover h2 { margin-top: 0; }
.layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); max-width: 1680px; margin: auto; }
nav { padding: 30px 18px; border-right: 1px solid var(--border); min-width: 0; }
.nav-label, .eyebrow { color: var(--secondary); font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 1.2px; }
.nav-label { margin: 0 12px 13px; }
nav button { display: flex; align-items: center; justify-content: space-between; gap: 7px; width: 100%; margin: 4px 0; padding: 11px 13px; border-color: transparent; background: transparent; font-size: 13px; }
nav button[aria-pressed=true] { background: var(--accent); border-color: var(--border); color: var(--strong); font-weight: 500; }
.nav-count { display: grid; place-items: center; min-width: 21px; height: 21px; background: var(--panel); border-radius: 6px; font-size: 11px; font-variant-numeric: tabular-nums; }
.nav-divider { margin-top: 35px; }
.nav-note { color: var(--secondary); font-size: 12px; margin: 40px 12px 0; line-height: 1.8; }
main { min-width: 0; padding: 37px 48px 24px; max-width: 1270px; width: 100%; }
h1 { font: 400 39px/1.15 Georgia, serif; letter-spacing: -.8px; margin: 6px 0 13px; }
h2 { font-size: 17px; font-weight: 500; margin: 22px 0 10px; line-height: 1.4; }
h3 { font-size: 15px; font-weight: 500; margin: 17px 0 8px; }
h4 { font-size: 14px; font-weight: 500; margin: 16px 0 8px; }
p { margin: 8px 0 13px; }
.lede { color: var(--secondary); max-width: 76ch; margin-bottom: 26px; font-size: 14px; }
.surface { background: var(--panel); border: 1px solid var(--border); padding: 23px; border-radius: var(--radius); min-width: 0; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.section-heading h2 { margin: 0; }
.section-description { color: var(--secondary); font-size: 12px; margin: 8px 0 16px; }
.badge, .tag { display: inline-block; background: var(--soft); color: var(--text); border-radius: 5px; font-size: 11px; padding: 3px 8px; line-height: 1.5; }
.badge.attention, .tag.attention { background: var(--attention); }
.inventory-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 21px; }
.inventory-item { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 17px 20px; border-radius: 11px; }
.inventory-item .metric { font-size: 25px; line-height: 1.2; font-weight: 500; grid-row: 1 / 3; grid-column: 2; font-variant-numeric: tabular-nums; }
.inventory-item .metric-label { font-size: 13px; font-weight: 500; }
.inventory-item .metric-note { font-size: 11px; color: var(--secondary); }
.next { display: flex; align-items: center; justify-content: space-between; gap: 24px; background: var(--accent); border: 1px solid var(--border); border-radius: var(--radius); padding: 25px 27px; margin: 0 0 24px; }
.next h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .9px; margin: 0 0 8px; color: var(--strong); }
.next p { font-size: 17px; line-height: 1.6; margin: 0; max-width: 55ch; }
.next button { flex-shrink: 0; }
.overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 19px; }
.supporting { margin-top: 19px; }
.overview-grid ul { margin: 0; padding: 0; list-style: none; }
.overview-grid li { padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 13px; line-height: 1.7; }
.overview-grid li:last-child { border-bottom: 0; padding-bottom: 0; }
.row { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--border); margin: 0; font-size: 13px; }
.row dt { color: var(--secondary); }.row dd { margin: 0; }
.disclosure { padding: 19px 23px; align-self: start; }
.disclosure > summary { font-size: 13px; font-weight: 500; }
.summary-hint { display: block; color: var(--secondary); font-size: 12px; font-weight: 400; margin-top: 4px; }
.disclosure[open] > summary { margin-bottom: 18px; }
input, select { display: block; width: 100%; max-width: 100%; padding: 11px 12px; border: 1px solid var(--border); background: var(--panel); border-radius: 8px; margin: 7px 0 0; }
label { display: block; min-width: 0; font-size: 12px; font-weight: 500; }
.rule-toolbar { display: grid; grid-template-columns: 1fr 185px; gap: 15px; }
.jump-selector { margin-top: 9px; padding: 7px 0; border: 0; }.jump-selector > summary { font-size: 12px; color: var(--secondary); }
.jump-selector label { margin-top: 12px; }
.rule-workspace { display: grid; grid-template-columns: 255px minmax(0, 1fr); gap: 22px; align-items: start; margin-top: 16px; }
.rule-list { display: grid; gap: 8px; max-height: 690px; overflow-y: auto; padding: 4px 5px 5px 0; }
.rule-item { display: block; width: 100%; padding: 16px; }
.rule-item[aria-pressed=true] { background: var(--accent); border-color: var(--strong); }
.rule-item .rule-id { display: flex; gap: 6px; justify-content: space-between; color: var(--secondary); font-size: 11px; margin-bottom: 7px; }
.rule-item .rule-wording { display: block; font-size: 13px; line-height: 1.65; }
.rule-heading { border-bottom: 1px solid var(--border); padding-bottom: 19px; margin-bottom: 22px; }
.rule-heading h2 { margin: 10px 0; font: 400 23px/1.5 Georgia, serif; letter-spacing: -.2px; }
.rule-heading .badge { margin-right: 7px; }
.trail { display: grid; gap: 14px; }
.trail > section { border: 1px solid var(--border); background: var(--panel); border-radius: 11px; padding: 19px 22px; min-width: 0; }
.trail h2 { margin: 0 0 12px; font-size: 13px; }
.trail h3 { margin-top: 6px; }
.trail p { font-size: 13px; }
.trail .node-label { color: var(--strong); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; }
.notice { padding: 16px 20px; border-left: 3px solid var(--strong); background: var(--accent); border-radius: 0 10px 10px 0; margin: 0 0 23px; }
.notice.attention { background: var(--attention); }.notice p:last-child { margin-bottom: 0; }
.notice h2 { margin-top: 0; }
.report-summary { margin-bottom: 24px; }.report-summary h2 { margin-top: 0; }
.report-metrics { display: flex; flex-wrap: wrap; gap: 22px; }.report-metrics .row { min-width: 130px; }
details { border-bottom: 1px solid var(--border); padding: 15px 0; }
summary { font-size: 13px; font-weight: 500; min-height: 27px; }
details > p, details > ul { font-size: 13px; }
.check-group { background: var(--panel); border: 1px solid var(--border); border-radius: 11px; padding: 5px 20px; margin-bottom: 12px; }
.check-group > summary { padding: 12px 0; }.check-group[open] > summary { border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.evidence-note { margin-top: 22px; color: var(--secondary); }.evidence-note summary { font-weight: 400; }
.source-list { display: grid; gap: 18px; }.source-list h2 { margin-top: 0; }.source-links { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.lesson-toolbar { max-width: 650px; margin-bottom: 24px; }.lesson { max-width: 80ch; padding: 30px 35px; }.lesson h2 { font: 400 25px/1.35 Georgia, serif; }.lesson > p { font-size: 14px; line-height: 1.85; }
.empty { padding: 28px 22px; border: 1px dashed var(--border); border-radius: 10px; background: var(--panel); }.empty h2,.empty h3 { margin-top: 0; }.empty p { color: var(--secondary); font-size: 13px; }
ul, ol { padding-left: 22px; }li { margin: 6px 0; }.small { font-size: 12px; }.muted { color: var(--secondary); }
pre { white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; font: 12px/1.8 ui-monospace, monospace; padding: 17px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; }code { overflow-wrap: anywhere; font-size: 12px; }
table { width: 100%; table-layout: fixed; border-collapse: collapse; margin: 15px 0; }th, td { text-align: left; vertical-align: top; padding: 9px; border-bottom: 1px solid var(--border); overflow-wrap: anywhere; font-size: 13px; }th { font-weight: 500; }
footer { display: flex; gap: 16px; justify-content: space-between; flex-wrap: wrap; margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--secondary); font-size: 11px; }footer p { margin: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }
@media(max-width:1180px) { main { padding: 30px; }.layout { grid-template-columns: 210px minmax(0,1fr); }.brand { min-width: 150px; }.rule-workspace { grid-template-columns: 210px minmax(0,1fr); }.inventory-item { padding: 15px; }.next { align-items: start; flex-direction: column; gap: 16px; } }
@media(max-width:880px) { .layout { grid-template-columns: 1fr; }nav { border-right: 0; border-bottom: 1px solid var(--border); display: flex; gap: 4px; flex-wrap: wrap; padding: 12px 20px; }nav button { width: auto; font-size: 12px; padding: 9px; margin: 0; }.nav-label,.nav-note { display: none; }.top { padding: 18px 24px; gap: 20px; }.brand { min-width: 0; }main { max-width: none; }.rule-workspace { grid-template-columns: 230px minmax(0,1fr); }.snapshot-info summary { flex-wrap: wrap; }.project-heading .eyebrow { display: none; } }
@media(max-width:640px) { main { padding: 25px 18px; }h1 { font-size: 33px; }.top { padding: 16px 18px; gap: 16px; flex-wrap: wrap; }.snapshot-info { margin-left: 0; width: 100%; }.snapshot-info > summary { width: fit-content; }.snapshot-popover { position: static; width: 100%; margin-top: 10px; box-shadow: none; }.wordmark { font-size: 26px; }nav { padding: 10px 9px; }.inventory-grid { gap: 8px; }.inventory-item { display: flex; flex-direction: column; padding: 13px 10px; }.inventory-item .metric { order: -1; font-size: 24px; }.inventory-item .metric-label { font-size: 12px; }.inventory-item .metric-note { font-size: 11px; }.overview-grid { grid-template-columns: 1fr; gap: 13px; }.next { padding: 21px; }.next p { font-size: 16px; }.surface { padding: 20px; }.rule-toolbar { grid-template-columns: 1fr; gap: 12px; }.rule-workspace { grid-template-columns: 1fr; }.rule-list { max-height: 320px; }.rule-heading h2 { font-size: 23px; }.trail > section { padding: 18px; }.lesson { padding: 22px; }.lede { font-size: 14px; }.row { font-size: 12px; }.snapshot-info > summary { min-height: 36px; }.nav-count { min-width: 18px; height: 18px; } }
@media(pointer:coarse) { button, select, input, summary { min-height: 44px; } }
@media(prefers-reduced-motion:no-preference) { button { transition: background .12s ease, border-color .12s ease; } }

/* UI-03: project-first navigation and neutral visual hierarchy. */
.brand,.brand-mark,.wordmark { display:none; }
h1 { font:600 32px/1.2 system-ui,sans-serif; letter-spacing:-1px; }
.rule-heading h2,.lesson h2 { font-family:system-ui,sans-serif; font-weight:600; }
.layout { display:block; max-width:1440px; }
nav { display:flex; flex-wrap:wrap; gap:6px; padding:12px 32px; border-right:0; border-bottom:1px solid var(--border); }
nav button { width:auto; margin:0; padding:10px 15px; }
.nav-label,.nav-note { display:none; }
main { max-width:1200px; margin:0 auto; padding-top:36px; }
.top { min-height:72px; }
#project-name { font-size:19px; font-weight:600; }
.next { background:var(--panel); border-left:4px solid var(--strong); align-items:start; flex-wrap:wrap; }
.next h2 { font-size:14px; text-transform:none; letter-spacing:0; }
.next .resume-prompt { flex-basis:100%; width:100%; }
.next .resume-prompt pre { font-size:14px; }
.group-title { margin:28px 0 14px; font-size:16px; font-weight:600; }
.guide-choices { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin:0 0 24px; }
.guide-choice { padding:20px; }
.guide-choice strong,.guide-choice span { display:block; }
.guide-choice span { font-size:13px; color:var(--secondary); margin-top:8px; }
.guide-choice[aria-pressed=true] { border-color:var(--strong); background:var(--accent); }
.technical-files { margin-top:24px; }
@media(max-width:640px) { nav { padding:10px; }nav button { padding:9px; }main { padding:24px 18px; }.guide-choices { grid-template-columns:1fr; }.next { padding:20px; }h1 { font-size:28px; } }

.system-context { margin:24px 0 32px; }.system-context h2 { margin-top:0; }
.system-context .row { grid-template-columns:140px 1fr; }
.map-headings,.map-row { display:grid; grid-template-columns:1fr 1.4fr 1fr; gap:20px; }
.map-headings { font-size:12px; color:var(--secondary); padding:14px 20px; }
.map-row { border:1px solid var(--border); background:var(--panel); border-radius:10px; padding:20px; margin-bottom:12px; align-items:stretch; }
.map-cell { min-width:0; font-size:13px; }.map-cell p { margin:8px 0; }
.map-rule { border-left:1px solid var(--border); border-right:1px solid var(--border); padding:0 20px; display:flex; flex-direction:column; gap:8px; }
.map-rule-button { padding:0; border:0; background:transparent; font-size:14px; font-weight:600; text-decoration:underline; text-underline-offset:3px; }
@media(max-width:640px) { .map-headings { display:none; }.map-row { grid-template-columns:1fr;gap:12px; }.map-cell::before { display:block; color:var(--secondary); font-size:11px; text-transform:uppercase; content:'Supporting sources'; }.map-rule::before { content:'Rule'; }.map-cell:last-child::before { content:'Linked checks'; }.map-rule { border:0; border-top:1px solid var(--border); border-bottom:1px solid var(--border); padding:16px 0; }.system-context .row { grid-template-columns:90px 1fr; } }

/* Visual structure uses actual counts and relationships. */
.visual-summary { display:grid;grid-template-columns:1.7fr 1fr;gap:20px;margin:24px 0; }
.visual-summary h2 { margin:0 0 20px; }.architecture svg { display:block;width:100%;height:auto; }
.diagram-lines { color:var(--secondary);opacity:.45; }.diagram-node { fill:var(--soft);stroke:var(--border);stroke-width:1; }
.diagram-count { fill:var(--text);font:600 24px system-ui; }.diagram-label { fill:var(--secondary);font:12px system-ui; }
.architecture>p { margin:0; }.coverage { display:flex;flex-direction:column;justify-content:center; }
.distribution { margin:12px 0;min-width:0; }.distribution-heading { display:flex;justify-content:space-between;gap:16px;font-size:13px; }
.distribution-track { height:8px;border-radius:5px;background:var(--soft);overflow:hidden;margin-top:10px; }.distribution-track span { display:block;height:100%;background:var(--strong);border-radius:5px; }
.distribution p { margin:6px 0 0;font-size:11px; }.visual-strip { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:0 0 24px; }
.source-list { grid-template-columns:repeat(2,minmax(0,1fr)); }.source-list>.surface { position:relative; }.source-count { display:flex;gap:8px;align-items:baseline;border-bottom:1px solid var(--border);padding-bottom:16px;margin-bottom:16px; }
.source-count strong { font-size:32px;line-height:1; }.source-count span { color:var(--secondary);font-size:12px; }
.system-context .row { padding:8px 0; }.map-row { position:relative; }.map-rule::after { content:'→';position:absolute;right:-10px;top:45%;color:var(--secondary);background:var(--panel); }.map-rule { position:relative; }
#check-list { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:start; }#check-list .check-group { margin:0; }
@media(max-width:880px) { .visual-summary { grid-template-columns:1fr; }.coverage { display:block; } }
@media(max-width:640px) { .visual-strip,.source-list,#check-list { grid-template-columns:1fr; }.map-rule::after { display:none; }.visual-summary { gap:14px; }.architecture { padding:16px; } }