:root {
  color-scheme: dark;
  --bg: #111112;
  --surface: #19191b;
  --surface-raised: #202024;
  --surface-hover: #29292e;
  --ink: #f2f0eb;
  --muted: #a5a2a0;
  --faint: #6d6a68;
  --line: #353437;
  --line-strong: #4b494d;
  --accent: #8b83ff;
  --experience: #e7a84b;
  --orchestration: #8b83ff;
  --integration: #5ca8d8;
  --foundation: #70b98d;
  --external: #d16f86;
  --danger: #e06f6f;
  --radius: 8px;
  --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  /* Base colour lives on <html>; body keeps only the grid lines over a
     transparent base so the fixed ambient glow can sit between them. */
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    transparent;
  background-size: 32px 32px;
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* Soft accent bloom anchored top-right, slowly breathing — the same ambient
   flourish as the product site, sharing its tokens. Fixed and behind content;
   purely decorative. */
.ambient-glow {
  position: fixed;
  z-index: -1;
  top: -18%;
  right: -8%;
  width: min(760px, 68%);
  height: 78vh;
  background:
    radial-gradient(closest-side, rgba(139,131,255,.16), transparent 70%),
    radial-gradient(closest-side, rgba(92,168,216,.11), transparent 72%);
  background-position: 28% 22%, 82% 64%;
  background-repeat: no-repeat;
  filter: blur(20px);
  pointer-events: none;
  animation: ambientDrift 20s ease-in-out infinite alternate;
}
@keyframes ambientDrift {
  from { transform: translate3d(0, 0, 0) scale(1); opacity: .8; }
  to   { transform: translate3d(-3%, 2%, 0) scale(1.06); opacity: 1; }
}
button, input, select { font: inherit; }
a { color: inherit; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 20;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 4px;
}
.skip-link:focus { top: 16px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  min-height: 88px;
  padding: 18px clamp(20px, 4vw, 64px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(17,17,18,.92);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font: 700 19px var(--mono);
  transform: rotate(-2deg);
}
.eyebrow {
  margin: 0 0 6px;
  color: var(--faint);
  font: 600 10px/1.2 var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1 { margin: 0; font-size: 17px; line-height: 1.1; letter-spacing: -.01em; }
.topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font: 11px var(--mono);
}
.topbar-meta code { color: var(--faint); }
.topbar-meta a { text-decoration: none; color: var(--ink); }
.topbar-meta a:hover { text-decoration: underline; }
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--foundation);
  box-shadow: 0 0 0 4px rgba(112,185,141,.12);
  animation: statusPulse 2.6s ease-out infinite;
}
@keyframes statusPulse {
  0%   { box-shadow: 0 0 0 0 rgba(112,185,141,.5); }
  70%  { box-shadow: 0 0 0 7px rgba(112,185,141,0); }
  100% { box-shadow: 0 0 0 0 rgba(112,185,141,0); }
}

.section-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  gap: 2px;
  padding: 0 clamp(20px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(17,17,18,.95);
  backdrop-filter: blur(16px);
}
.nav-item {
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 600 12px var(--mono);
}
.nav-item:hover { color: var(--ink); }
.nav-item.active { border-bottom-color: var(--accent); color: var(--ink); }
.nav-item:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

main { min-height: 75vh; }
.view { display: none; padding: 48px clamp(20px, 4vw, 64px) 72px; }
.view.active { display: block; }
.intro-row {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
  margin-bottom: 32px;
}
.intro-row.compact { align-items: start; }
h2 { margin: 0 0 12px; font-size: clamp(32px, 5vw, 64px); line-height: .96; letter-spacing: -.055em; }
/* View titles pick up the same accent gradient as the product site's hero. */
.intro-row h2 {
  background: linear-gradient(96deg, var(--ink) 28%, var(--accent) 78%, var(--integration) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede { max-width: 720px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }

.stats { display: flex; gap: 28px; flex-shrink: 0; }
.stat { min-width: 86px; }
.stat-value { display: block; font: 500 26px/1 var(--mono); letter-spacing: -.06em; }
.stat-label { display: block; margin-top: 7px; color: var(--faint); font: 10px var(--mono); text-transform: uppercase; letter-spacing: .12em; }

.graph-toolbar, .inventory-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  min-height: 58px;
  padding: 10px;
  border: 1px solid var(--line);
  border-bottom: 0;
  background: var(--surface);
}
.search-control { flex: 1; }
.search-control input, .inventory-toolbar input {
  width: 100%;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: var(--bg);
  color: var(--ink);
  font: 12px var(--mono);
}
.search-control input::placeholder, .inventory-toolbar input::placeholder { color: var(--faint); }
.select-control { display: flex; align-items: center; gap: 8px; color: var(--faint); font: 10px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.select-control select {
  min-height: 38px;
  padding: 0 30px 0 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  color: var(--ink);
  font: 12px var(--mono);
}
.quiet-button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 11px var(--mono);
}
.quiet-button:hover { background: var(--surface-hover); color: var(--ink); }

.graph-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 680px;
  border: 1px solid var(--line);
  background: rgba(17,17,18,.8);
}
.graph-scroll { overflow: auto; min-width: 0; }
#architecture-graph { display: block; min-width: 1160px; width: 100%; height: 680px; }
.graph-layer-label { fill: var(--faint); font: 600 10px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.graph-layer-rule { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 6; }
.graph-edge { fill: none; stroke: var(--line-strong); stroke-width: 1.25; opacity: .56; vector-effect: non-scaling-stroke; }
.graph-edge.reference { stroke: #55545a; stroke-dasharray: 3 5; opacity: .28; }
.graph-edge.active { stroke: var(--ink); opacity: .95; stroke-width: 2; }
.graph-edge.dimmed { opacity: .06; }
.graph-node { cursor: pointer; transition: opacity .18s ease; }
.graph-node rect { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1; rx: 5; }
.graph-node:hover rect, .graph-node:focus rect { fill: var(--surface-hover); stroke: var(--node-color); }
.graph-node.selected rect { stroke: var(--node-color); stroke-width: 2; }
.graph-node.dimmed { opacity: .16; }
.graph-node .node-kicker { fill: var(--node-color); font: 600 8px var(--mono); letter-spacing: .12em; }
.graph-node .node-title { fill: var(--ink); font: 600 13px var(--sans); }
.graph-node .node-meta { fill: var(--faint); font: 10px var(--mono); }
.graph-node .node-rule { stroke: var(--node-color); stroke-width: 3; }

/* Interplay graph: connection pools ⋈ on-device models. Mirrors the System Map
   node/edge tokens; edge classes emphasize cross-domain `interplay` wiring and
   de-emphasize the `structure`/`lifecycle` scaffolding. */
/* The interplay graph is a pannable/zoomable canvas: the SVG fills its frame and
   a viewBox window moves over the content (app.js), so the scroll container clips
   rather than scrolls and shows a grab cursor. */
#interplay-graph { display: block; width: 100%; height: 72vh; touch-action: none; }
#interplay-scroll { overflow: hidden; cursor: grab; }
#interplay-scroll.panning { cursor: grabbing; }
.graph-hint { margin: 0; padding: 10px 2px 0; color: var(--faint); font: 10px var(--mono); letter-spacing: .04em; }
/* Fullscreen: the workspace fills the screen, graph above, inspector below. */
#interplay-workspace:fullscreen { height: 100vh; background: var(--bg); grid-template-rows: minmax(0, 1fr) auto; }
#interplay-workspace:fullscreen #interplay-scroll { min-height: 0; }
#interplay-workspace:fullscreen #interplay-graph { height: 100%; }
.interplay-edge { fill: none; stroke-width: 1.25; vector-effect: non-scaling-stroke; }
.interplay-edge.structure { stroke: var(--line-strong); opacity: .5; }
.interplay-edge.lifecycle { stroke: #55545a; stroke-dasharray: 3 5; opacity: .4; }
.interplay-edge.interplay { stroke: var(--accent); opacity: .8; stroke-width: 1.75; }
/* A product surface invoking a queried namespace — the caller perspective. */
.interplay-edge.usage { stroke: #7ec8b0; stroke-dasharray: 5 4; opacity: .55; }
/* Feature-module hulls: each product feature is a bounded, labelled region; the
   shared core is drawn a touch warmer so it reads as the factored-out backbone. */
.interplay-group-rect { fill: rgba(126, 200, 176, .05); stroke: var(--line); stroke-width: 1; }
.interplay-group-label { fill: var(--faint); font: 700 11px var(--mono); letter-spacing: .14em; opacity: .65; text-transform: uppercase; }
.interplay-group.shared .interplay-group-rect { fill: rgba(160, 160, 200, .07); stroke-dasharray: 6 4; }
.interplay-group.shared .interplay-group-label { opacity: .8; }
.interplay-edge.active { stroke: var(--ink); opacity: .95; stroke-width: 2.25; }
.interplay-edge.dimmed { opacity: .07; }
.interplay-node { cursor: grab; transition: opacity .18s ease; }
.interplay-node.dragging { cursor: grabbing; }
.interplay-node rect { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1; }
.interplay-node rect.operation { fill: var(--bg); stroke-dasharray: 3 4; }
.interplay-node rect.caller { fill: var(--bg); }
/* Queried RPC namespaces / REST endpoints tile into a compact grid, so their
   labels use the tighter mono face and their meta line shrinks to fit. */
.interplay-node rect.endpoint { fill: var(--bg); }
.interplay-node[data-kind="endpoint"] .node-title { fill: var(--ink); font: 600 11px var(--mono); }
.interplay-node[data-kind="endpoint"] .node-meta { font-size: 8px; }
.interplay-node rect[data-explained="true"] { stroke: var(--node-color); }
.interplay-node:hover rect, .interplay-node:focus rect { fill: var(--surface-hover); stroke: var(--node-color); }
.interplay-node.selected rect { stroke: var(--node-color); stroke-width: 2; }
.interplay-node.dimmed { opacity: .16; }
.interplay-node .node-kicker { fill: var(--node-color); font: 600 8px var(--mono); letter-spacing: .1em; }
.interplay-node .node-title { fill: var(--ink); font: 600 12px var(--sans); }
.interplay-node .node-meta { fill: var(--faint); font: 9px var(--mono); }
.interplay-node .node-rule { stroke: var(--node-color); stroke-width: 3; }

.inspector {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 26px;
  overflow: auto;
}
.inspector-empty { max-width: 680px; color: var(--muted); }
.inspector-index { display: block; margin-bottom: 32px; color: var(--line-strong); font: 32px var(--mono); }
.inspector h3 { margin: 0 0 12px; font-size: 24px; letter-spacing: -.03em; }
.inspector p { color: var(--muted); font-size: 13px; line-height: 1.6; }
.inspector-badge { display: inline-block; margin-bottom: 16px; color: var(--component-color); font: 600 9px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.inspector-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 22px 0; background: var(--line); border: 1px solid var(--line); }
.inspector-metric { padding: 12px 8px; background: var(--bg); }
.inspector-metric strong { display: block; font: 16px var(--mono); }
.inspector-metric span { color: var(--faint); font: 8px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.inspector-section { margin-top: 24px; }
.inspector-section h4 { margin: 0 0 10px; color: var(--faint); font: 600 9px var(--mono); text-transform: uppercase; letter-spacing: .12em; }
.chip-list { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { max-width: 100%; padding: 5px 7px; border: 1px solid var(--line); border-radius: 3px; color: var(--muted); font: 9px var(--mono); overflow-wrap: anywhere; }
.evidence-list { margin: 0; padding: 0; list-style: none; }
.evidence-list li { border-top: 1px solid var(--line); }
.evidence-list a { display: block; padding: 8px 0; color: var(--muted); font: 9px/1.4 var(--mono); text-decoration: none; overflow-wrap: anywhere; }
.evidence-list a:hover { color: var(--ink); }
.relationship { padding: 9px 0; border-top: 1px solid var(--line); }
.relationship strong { display: block; color: var(--ink); font-size: 11px; }
.relationship span { color: var(--faint); font: 9px var(--mono); }

.legend { display: flex; flex-wrap: wrap; gap: 18px; padding: 16px 2px; color: var(--faint); font: 10px var(--mono); }
.legend-item { display: flex; align-items: center; gap: 7px; }
.legend-swatch { width: 18px; height: 2px; background: var(--legend-color); }

.authority-banner {
  margin: 0 0 24px;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--foundation);
  background: var(--surface);
  color: var(--muted);
  font: 11px/1.6 var(--mono);
}
.authority-banner.warning { border-left-color: var(--experience); color: #d8d3ca; }
.authority-banner strong { color: var(--ink); }
.behavior-content { display: grid; gap: 18px; }
.behavior-group {
  min-width: 0;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.behavior-group > h3 { margin: 0; font-size: 20px; letter-spacing: -.025em; }
.group-note, .derivation, .empty-state {
  margin: 8px 0 0;
  color: var(--faint);
  font: 10px/1.6 var(--mono);
}
.derivation { max-width: 900px; color: var(--muted); }
.code-graph-reference {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--integration);
  background: var(--bg);
  color: var(--muted);
  font: 10px/1.7 var(--mono);
  overflow-wrap: anywhere;
}
.behavior-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 10px; margin-top: 18px; }
.behavior-row { min-width: 0; padding: 14px; border: 1px solid var(--line); background: var(--bg); }
.behavior-row h4 { margin: 0 0 7px; color: var(--ink); font-size: 13px; overflow-wrap: anywhere; }
.behavior-meta, .provenance { margin: 0; color: var(--faint); font: 9px/1.55 var(--mono); overflow-wrap: anywhere; }
.provenance { margin-top: 8px; }
.source-link { color: var(--integration); text-decoration: none; }
.source-link:hover { color: var(--ink); text-decoration: underline; }
.source-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.pocket-section { margin-top: 22px; }
.pocket-section > h4 { margin: 0 0 10px; color: var(--muted); font: 600 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.pocket-section .behavior-row + .behavior-row { margin-top: 8px; }
.scenario-sequence { margin: 20px 0 0; padding-left: 32px; }
.scenario-sequence li { padding: 0 0 10px 8px; color: var(--faint); font: 11px var(--mono); }
.scenario-sequence .behavior-row { color: var(--ink); }

.document-workspace { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; align-items: start; }
.document-list { position: sticky; top: 72px; display: grid; gap: 2px; }
.document-link {
  min-height: 48px;
  padding: 12px 14px;
  border: 0;
  border-left: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  text-align: left;
  cursor: pointer;
  font: 12px var(--mono);
}
.document-link:hover { background: var(--surface); color: var(--ink); }
.document-link.active { border-left-color: var(--accent); background: var(--surface); color: var(--ink); }
.document { min-width: 0; padding: 40px clamp(22px, 5vw, 64px); border: 1px solid var(--line); background: var(--surface); }
.document h1 { margin: 0 0 32px; font-size: clamp(30px, 5vw, 52px); line-height: 1; letter-spacing: -.05em; }
.document h2 { margin: 44px 0 14px; font-size: 22px; line-height: 1.15; letter-spacing: -.025em; }
.document h3 { margin: 28px 0 10px; font-size: 16px; }
.document p, .document li { max-width: 70ch; color: #c6c3be; font-size: 15px; line-height: 1.75; }
.document code { padding: 2px 5px; background: var(--bg); color: #d5d0ff; border-radius: 3px; font: 12px var(--mono); }
.document strong { color: var(--ink); }
.document ul, .document ol { padding-left: 22px; }
.document .authority-note { margin-bottom: 28px; color: var(--faint); font: 9px var(--mono); text-transform: uppercase; letter-spacing: .12em; }

.inventory-table-wrap { overflow: auto; border: 1px solid var(--line); }
.inventory-table { width: 100%; border-collapse: collapse; background: var(--surface); }
.inventory-table th { position: sticky; top: 0; padding: 12px 16px; background: var(--bg); color: var(--faint); text-align: left; font: 9px var(--mono); text-transform: uppercase; letter-spacing: .12em; }
.inventory-table td { padding: 15px 16px; border-top: 1px solid var(--line); color: var(--muted); font: 11px var(--mono); }
.inventory-table tr { cursor: pointer; }
.inventory-table tbody tr:hover { background: var(--surface-hover); }
.inventory-table .component-name { color: var(--ink); font: 600 13px var(--sans); }
.layer-pill { color: var(--layer-color); }

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(20px, 4vw, 64px);
  border-top: 1px solid var(--line);
  color: var(--faint);
  font: 10px/1.5 var(--mono);
}
footer p { margin: 0; }
footer strong { color: var(--muted); }

@media (max-width: 980px) {
  .topbar-meta code, .topbar-meta > span:not(.status-dot) { display: none; }
  .intro-row { align-items: start; flex-direction: column; }
  .inspector { min-height: 300px; }
  .document-workspace { grid-template-columns: 1fr; gap: 14px; }
  .document-list { position: static; display: flex; overflow: auto; }
  .document-link { flex: 0 0 auto; border-left: 0; border-bottom: 2px solid transparent; }
  .document-link.active { border-bottom-color: var(--accent); }
}

@media (max-width: 620px) {
  .topbar { min-height: 72px; }
  .brand-mark { width: 36px; height: 36px; }
  .topbar-meta a { font-size: 0; }
  .topbar-meta a::after { content: "GitHub ↗"; font-size: 11px; }
  .section-nav { overflow-x: auto; }
  .nav-item { flex: 0 0 auto; padding: 0 12px; }
  .view { padding-top: 32px; }
  .stats { width: 100%; justify-content: space-between; gap: 10px; }
  .stat { min-width: 0; }
  .graph-toolbar { align-items: stretch; flex-direction: column; border-bottom: 0; }
  .select-control { justify-content: space-between; }
  .select-control select { flex: 1; }
  .document { padding: 28px 20px; }
  .behavior-list { grid-template-columns: 1fr; }
  .behavior-group { padding: 18px; }
  footer { flex-direction: column; }
}

/* When a view becomes active its content rises in with a light stagger. Driven
   by the class toggle app.js already does, so it re-plays on every tab switch
   and never leaves anything hidden (no persisted opacity:0 state). */
.view.active > * { animation: viewIn .5s cubic-bezier(.22, 1, .36, 1) backwards; }
.view.active > *:nth-child(2) { animation-delay: 60ms; }
.view.active > *:nth-child(3) { animation-delay: 120ms; }
.view.active > *:nth-child(n+4) { animation-delay: 160ms; }
@keyframes viewIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
  }
}
