/* MetaDoc schema map — single light theme (the page is deployed for a mixed audience; no dark variant). */
:root {
  color-scheme: light;
  --bg: #F6F7F9; --surface: #FFFFFF; --line: #DDE2E8; --ink: #1B2430; --muted: #5B6572; --faint: #C4CBD4;
  --edge: #3A4351; --edge-local: #9AA3AF; --highlight: #D9480F;
  --platform: #0F766E; --core: #3B6FD9; --scan: #C98A1A; --billing: #7C5CBF; --cutover: #6B7280;
  --platform-soft: #E4F4F1; --core-soft: #E8EEFA; --scan-soft: #FBF1DE; --billing-soft: #EEE8F8; --cutover-soft: #EAECF0;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif; font-size: 14px; line-height: 1.5;
  display: grid; grid-template-rows: auto 1fr; overflow: hidden;
}
code { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; font-size: .95em; }
button { font: inherit; color: inherit; cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--core); outline-offset: 1px; }
[hidden] { display: none !important; }

/* ── top bar ─────────────────────────────────────────────────────────────── */
.bar { display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--surface); flex-wrap: wrap; }
.brand { display: flex; flex-direction: column; gap: 1px; }
.bar h1 { font-family: "IBM Plex Sans Condensed", "IBM Plex Sans", sans-serif; font-weight: 600; font-size: 18px; margin: 0; line-height: 1.2; }
.bar .sub { color: var(--muted); font-size: 12px; }
.bar .grow { flex: 1; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--bg); }
.seg-btn { border: 0; background: none; padding: 6px 14px; font-size: 13px; color: var(--muted); }
.seg-btn + .seg-btn { border-left: 1px solid var(--line); }
.seg-btn[aria-pressed="true"] { background: var(--ink); color: #fff; }
.search { position: relative; }
.search input { width: 240px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); font: inherit; font-size: 13px; }
.results { position: absolute; top: 100%; left: 0; right: 0; z-index: 5; margin-top: 4px; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; box-shadow: 0 8px 24px rgba(27,36,48,.12); display: grid; max-height: 320px; overflow: auto; }
.results button { text-align: left; padding: 6px 10px; border: 0; background: none; }
.results button:hover, .results button:focus-visible { background: var(--core-soft); outline: none; }
.btn { border: 1px solid var(--line); background: var(--surface); border-radius: 6px; padding: 6px 12px; font-size: 13px; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--core); border-color: var(--core); color: #fff; }
.btn.primary:hover { background: #2F5FC4; }
.btn.primary[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); }

/* ── stage: guide (left) + canvas + detail panel (floating right) ─────────── */
.stage { display: flex; min-height: 0; position: relative; }
.guide { width: 380px; flex: none; overflow: auto; background: var(--surface); border-right: 1px solid var(--line); padding: 18px 22px 28px; }
.g-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.guide h2 { font-family: "IBM Plex Sans Condensed", "IBM Plex Sans", sans-serif; font-weight: 600; font-size: 22px; margin: 0 0 10px; }
.guide h3 { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); font-weight: 500; margin: 22px 0 6px; }
.guide p { margin: 0 0 8px; max-width: 60ch; }
.guide b { font-weight: 600; }
.x { border: 0; background: none; font-size: 22px; line-height: 1; color: var(--muted); padding: 0 4px; }
.x:hover { color: var(--ink); }
.areas, .legend, .tips ul { list-style: none; padding: 0; margin: 0; }
.areas li { display: flex; gap: 10px; align-items: flex-start; margin: 6px 0; }
.areas .sw { margin-top: 5px; flex: none; }
.areas b { display: block; }
.areas span { color: var(--muted); font-size: 13px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.chip { border: 1.5px solid; border-radius: 999px; padding: 3px 11px; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; background: var(--surface); }
.chip:hover { background: var(--bg); }
.legend li { display: flex; align-items: center; gap: 10px; margin: 5px 0; color: var(--muted); font-size: 13px; }
.tips li { margin: 4px 0; color: var(--muted); font-size: 13px; }
.t-step { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; margin-top: 10px; }
.t-step .count { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; color: var(--muted); letter-spacing: .05em; }
.t-step h4 { margin: 4px 0 6px; font-size: 16px; font-weight: 600; }
.t-step p { margin: 0; }
.t-nav { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.t-nav .grow { flex: 1; }
.btn:disabled { opacity: .45; cursor: default; }

.canvas-wrap { flex: 1; min-width: 0; position: relative; }
canvas { display: block; width: 100%; height: 100%; cursor: grab; touch-action: none; }

/* ── swatches shared by guide + legend ───────────────────────────────────── */
.sw { width: 12px; height: 12px; border-radius: 3px; border: 1.5px solid; display: inline-block; }
.sw.platform, .chip.platform { background: var(--platform-soft); border-color: var(--platform); }
.sw.core, .chip.core { background: var(--core-soft); border-color: var(--core); }
.sw.scan, .chip.scan { background: var(--scan-soft); border-color: var(--scan); }
.sw.billing, .chip.billing { background: var(--billing-soft); border-color: var(--billing); }
.sw.cutover, .chip.cutover { background: var(--cutover-soft); border-color: var(--cutover); }
.ln { display: inline-block; width: 30px; flex: none; border-top: 2px solid var(--edge); }
.ln.local { border-color: var(--edge-local); } .ln.dashed { border-top-style: dashed; border-color: var(--edge-local); } .ln.thick { border-top-width: 3px; }

/* ── table detail panel ──────────────────────────────────────────────────── */
.panel { position: absolute; top: 14px; right: 14px; width: 380px; max-height: calc(100% - 28px); overflow: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 14px 18px 12px; box-shadow: 0 10px 30px rgba(27,36,48,.14); }
.p-close { position: absolute; top: 8px; right: 10px; }
.p-head h2 { font-family: "IBM Plex Sans Condensed", "IBM Plex Sans", sans-serif; font-weight: 600; font-size: 22px; margin: 6px 0 4px; }
.p-desc { margin: 0 0 6px; font-size: 14px; }
.p-note { margin: 0 0 8px; color: var(--muted); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; }
.p-schema { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; padding: 1px 7px; border-radius: 3px; border: 1px solid; }
.p-schema.platform { color: var(--platform); border-color: var(--platform); background: var(--platform-soft); }
.p-schema.core { color: var(--core); border-color: var(--core); background: var(--core-soft); }
.p-schema.scan { color: var(--scan); border-color: var(--scan); background: var(--scan-soft); }
.p-schema.billing { color: var(--billing); border-color: var(--billing); background: var(--billing-soft); }
.p-schema.cutover { color: var(--cutover); border-color: var(--cutover); background: var(--cutover-soft); }
.anchor { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; color: var(--highlight); vertical-align: middle; }
.cols { width: 100%; border-collapse: collapse; margin: 4px 0 6px; font-size: 13px; }
.cols td { padding: 3px 4px; border-bottom: 1px solid var(--line); vertical-align: top; }
.cols td:nth-child(2) { color: var(--muted); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; }
.flag { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 10px; padding: 0 5px; border-radius: 3px; border: 1px solid var(--line); color: var(--muted); cursor: help; }
.flag.pk { color: var(--highlight); border-color: var(--highlight); }
.flag.fk { color: var(--core); border-color: var(--core); }
.panel h3 { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 12px 0 4px; font-weight: 500; }
.panel ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.panel li { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.panel li button { border: 0; background: none; padding: 3px 0; text-align: left; }
.panel li button:hover code, .panel li button:focus-visible code { text-decoration: underline; }
.panel li .col { color: var(--muted); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; }
.kind { font-size: 11px; color: var(--muted); white-space: nowrap; }
.kind.composite { color: var(--highlight); }
.hint { color: var(--muted); font-size: 12px; margin: 12px 0 0; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media (max-width: 900px) {
  .guide { position: absolute; top: 0; bottom: 0; left: 0; z-index: 6; width: min(380px, 100%); box-shadow: 0 0 40px rgba(27,36,48,.2); }
  .panel { width: calc(100% - 28px); max-height: 50%; top: auto; bottom: 14px; }
  .search input { width: 160px; }
}