/* Local fonts, native controls and a fixed task workspace. No scroll effects. */
:root {
  color-scheme: dark;
  --font-body: Inter, system-ui, sans-serif;
  --font-display: "Space Grotesk", Inter, sans-serif;
  --text-base: 1rem;
  --text-title: 1.5rem;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  /* Motion tokens. One signature curve; see MOTION.md for the binding table. */
  --motion-quick: 160ms;
  --motion-standard: 260ms;
  --motion-slow: 420ms;
  --motion-wave: 220ms;
  --motion-breath: 3200ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-enter: cubic-bezier(0.05, 0.7, 0.1, 1);
  --ease-exit: cubic-bezier(0.3, 0, 1, 1);
  --bg: #111316;
  --surface: #191c21;
  --surface-raised: #22262d;
  --text: #f0f2f5;
  --muted: #b4bbc7;
  --border: #424953;
  --accent: #98abff;
  --accent-bg: #283451;
  --focus: #d0dcff;
  --h0: #98abff;
  --h1: #72cbaa;
  --h2: #71c6d8;
  --h3: #d4a1d9;
  --h4: #d9c580;
  --h5: #dfaa83;
  --h6: #a4b6e0;
  --h7: #98c9b3;
  --h8: #9abdc9;
  --h9: #c9a0b7;
  --h10: #b5c88e;
  --h11: #d2c099;
}
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f4f5f7;
    --surface: #ffffff;
    --surface-raised: #eaedf2;
    --text: #17202d;
    --muted: #475466;
    --border: #a4aebc;
    --accent: #304ca0;
    --accent-bg: #e4ebff;
    --focus: #203982;
    --h0: #304ca0;
    --h1: #236b51;
    --h2: #1d677b;
    --h3: #834884;
    --h4: #79611a;
    --h5: #95572c;
    --h6: #405f9b;
    --h7: #2d7154;
    --h8: #3c6472;
    --h9: #8d476d;
    --h10: #586d2b;
    --h11: #76602c;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: auto; }
body {
  margin: 0;
  font: 400 var(--text-base)/1.5 var(--font-body);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
button, input, select { font: inherit; color: inherit; }
button, input, select, summary, .context-actions a, .statusbar > a {
  min-height: 44px;
}
button, select, input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}
button {
  padding: var(--space-2) var(--space-3);
  min-width: 44px;
  cursor: pointer;
}
button:hover:not(:disabled), summary:hover, .context-actions a:hover { background: var(--surface-raised); }
button:active:not(:disabled) { background: var(--accent-bg); }
button:disabled { opacity: .5; cursor: default; }
button[aria-pressed="true"] { background: var(--accent-bg); border-color: var(--accent); }
a { color: var(--accent); text-underline-offset: 3px; }
button, a, summary, input, select { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
h1, h2, h3, p { margin: 0; }
h1 { font: 600 var(--text-title)/1.25 var(--font-display); overflow-wrap: anywhere; }
h2, h3 { font-size: var(--text-base); font-weight: 650; line-height: 1.4; }
ol { padding: 0; margin: 0; }
.skip { position: fixed; z-index: 10; top: -100px; left: var(--space-4); padding: var(--space-3); background: var(--surface); }
.skip:focus { top: var(--space-2); }
.workspace {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: 100vh;
  height: 100dvh;
  min-height: 620px;
}
.workspace__header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-3) var(--space-4);
}
.toolbar { display: grid; grid-template-columns: minmax(260px, 1.3fr) minmax(0, 3fr); gap: var(--space-3); }
.field { display: flex; flex-direction: column; gap: var(--space-1); min-width: 0; }
.field label { color: var(--muted); font-weight: 500; }
.field select { width: 100%; padding: var(--space-2); }
.filter-disclosure { min-width: 0; }
.filter-disclosure > summary { display: none; }
.filter-fields { display: grid; grid-template-columns: 1.25fr 1fr 1fr 146px; gap: var(--space-3); }
.search-input { display: flex; min-width: 0; gap: var(--space-2); }
.search-input input { width: 100%; min-width: 0; padding: var(--space-2) var(--space-3); }
input::placeholder { color: var(--muted); opacity: 1; }
.search-input button { background: transparent; }
.context-row { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); padding-top: var(--space-3); }
.context-title { min-width: 0; }
.eyebrow { display: block; color: var(--muted); margin-bottom: var(--space-1); }
.context-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); flex-shrink: 0; }
.context-actions a { display: inline-flex; align-items: center; padding: var(--space-2); }
.context-actions button { background: transparent; }
.workspace__body { display: grid; grid-template-columns: minmax(0, 1fr) 320px; min-height: 0; }
.graph-region { display: grid; grid-template-rows: auto minmax(0, 1fr); min-width: 0; min-height: 0; }
.graph-tools { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); padding: var(--space-2) var(--space-4); border-bottom: 1px solid var(--border); }
.graph-tools button { background: var(--surface); }
#graph-caption { color: var(--muted); margin-left: auto; }
.graph-canvas { position: relative; min-height: 0; min-width: 0; overflow: hidden; }
.stage__svg { width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; }
.stage__svg.is-dragging { cursor: grabbing; }
#graph-empty { position: absolute; top: 40%; left: 10%; right: 10%; text-align: center; color: var(--muted); pointer-events: none; }
.g-node { cursor: pointer; }
.g-hit { fill: transparent; stroke: none; }
.g-dot { fill: var(--c, var(--accent)); stroke: var(--bg); stroke-width: 1.5px; vector-effect: non-scaling-stroke; }
.g-node.is-lead .g-dot { stroke: var(--text); stroke-width: 1.5px; }
.g-node.is-selected .g-dot { stroke: var(--text); stroke-width: 3px; }
.g-edge { fill: none; stroke: var(--c, var(--muted)); stroke-width: 1.5px; opacity: .55; vector-effect: non-scaling-stroke; pointer-events: none; }
.g-edge--inferred { stroke-dasharray: 5 5; opacity: .3; stroke-width: 1px; }
.g-labels { pointer-events: none; }
.g-nlabel, .g-clabel {
  font: 500 16px/1.4 var(--font-body);
  fill: var(--text);
  stroke: var(--bg);
  stroke-width: 5px;
  stroke-linejoin: round;
  paint-order: stroke;
  pointer-events: none;
}
.g-clabel { fill: var(--c, var(--text)); }
.g-commring {
  fill: none;
  stroke: var(--text);
  stroke-opacity: .16;
  stroke-width: 1px;
  stroke-dasharray: 2 6;
  vector-effect: non-scaling-stroke;
  display: none;
  pointer-events: none;
}
#top[data-mode="overview"] .g-commring { display: block; }
.g-nlabel.is-selected { fill: var(--text); font-weight: 650; }
#selected-label-leader { fill: none; stroke: var(--accent); stroke-width: 1.5px; }
#selected-label-leader[data-offscreen="true"] { stroke-dasharray: 4 3; }
.g-label-leader { fill: none; stroke: var(--muted); stroke-width: 1px; opacity: .6; }

/* ------------------------------------------------------------------ motion
 * Only transform, opacity and stroke-dashoffset are animated. Hover feedback is
 * CSS-only and has no JavaScript handler, so a pointer can never reach state.
 * transform-box keeps a dot's scale centred on itself without touching r/cx/cy.
 */
.g-node .g-dot {
  transform-box: fill-box;
  transform-origin: 50% 50%;
  transform: scale(var(--dot-counter-scale, 1));
  transition: transform var(--motion-quick) var(--ease-standard),
    stroke-width var(--motion-quick) var(--ease-standard);
}
/* The counter-scale is a per-frame correction that holds a dot at the size the
 * layout reserved for it, so easing it makes the dot lag the camera: it bulges
 * mid-zoom and its rim stops matching the leader drawn to it. During a flight the
 * correction applies on the frame it is written. */
#top[data-motion="running"] .g-node .g-dot { transition: none; }
.g-node:hover .g-dot { transform: scale(calc(var(--dot-counter-scale, 1) * 1.2)); stroke: var(--text); stroke-width: 2.5px; }
.g-node.is-selected:hover .g-dot { stroke-width: 3.5px; }
/* Edge geometry is never rebuilt and never hidden. The scene layout is fixed for
 * the whole flight, so the real curved edges move with their dots through the one
 * parent transform: the network is drawn on every frame, including the opening. */
.g-edges { transition: opacity var(--motion-standard) var(--ease-standard); }
/* The receding set: decoration only, so it is not a .g-node and takes no pointer. */
.g-exit-dot {
  fill: var(--c, var(--accent));
  stroke: var(--bg);
  stroke-width: 1.5px;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
  transform-box: fill-box;
  transform-origin: 50% 50%;
  animation: dot-leave calc(var(--motion-slow) * .65) var(--ease-exit) both;
}
/* Labels are placed for the committed layout immediately, so their size is always
 * measurable and readable, and they are projected with their own dot for the
 * flight. Nothing readable is withheld on any beat, including the opening. */
#graph-labels[data-revealed="true"] { transition: opacity var(--motion-standard) var(--ease-standard); }
/* A projected label that would leave the canvas, cross another name or cross a dot
 * steps aside for those frames only, and returns as the camera settles. */
.g-nlabel[data-flown="out"], .g-clabel[data-flown="out"] { opacity: 0; }
.g-node[data-entering] .g-dot {
  animation: dot-enter var(--motion-wave) var(--ease-enter) var(--enter-delay, 0ms) both;
}
.g-node[data-leaving] { pointer-events: none; }
.g-node[data-leaving] .g-dot {
  animation: dot-leave calc(var(--motion-slow) * .65) var(--ease-exit) both;
}
/* The selected dot pulses in brightness, not in size: its leader line is drawn to
   the rim, so growing the dot would leave the line starting inside it. */
#top[data-pulse] .g-node[data-in-context="true"]:not(.is-selected) .g-dot {
  animation: dot-pulse 320ms var(--ease-standard) 2;
}
#top[data-pulse] .g-node[data-in-context="true"].is-selected .g-dot {
  animation: dot-flash 320ms var(--ease-standard) 2;
}
#top[data-pulse] .g-node[data-in-context="false"] .g-dot { opacity: .35; }
.g-halo {
  fill: var(--c, var(--accent));
  opacity: .18;
  pointer-events: none;
  transform-box: fill-box;
  transform-origin: 50% 50%;
  animation: halo-in var(--motion-standard) var(--ease-standard) both,
    halo-breath var(--motion-breath) var(--ease-standard) var(--motion-standard) infinite;
}
@keyframes dot-enter {
  from { opacity: 0; transform: scale(calc(var(--dot-counter-scale, 1) * .9)); }
  to { opacity: 1; transform: scale(var(--dot-counter-scale, 1)); }
}
@keyframes dot-leave { from { opacity: .85; transform: scale(1); } to { opacity: 0; transform: scale(.5); } }
@keyframes dot-pulse {
  0% { transform: scale(var(--dot-counter-scale, 1)); }
  45% { transform: scale(calc(var(--dot-counter-scale, 1) * 1.18)); opacity: .78; }
  100% { transform: scale(var(--dot-counter-scale, 1)); }
}
@keyframes dot-flash { 0%, 100% { opacity: 1; } 45% { opacity: .6; } }
@keyframes halo-in { from { opacity: 0; transform: scale(.6); } to { opacity: .18; transform: scale(1); } }
@keyframes halo-breath {
  0%, 100% { opacity: .12; transform: scale(.94); }
  50% { opacity: .22; transform: scale(1.12); }
}
.h0 { --c: var(--h0); } .h1 { --c: var(--h1); } .h2 { --c: var(--h2); }
.h3 { --c: var(--h3); } .h4 { --c: var(--h4); } .h5 { --c: var(--h5); }
.h6 { --c: var(--h6); } .h7 { --c: var(--h7); } .h8 { --c: var(--h8); }
.h9 { --c: var(--h9); } .h10 { --c: var(--h10); } .h11 { --c: var(--h11); }
.hx { --c: var(--muted); }
.inspector {
  display: grid; grid-template-rows: minmax(150px, 42%) minmax(0, 1fr);
  background: var(--surface); border-left: 1px solid var(--border); min-width: 0; min-height: 0;
}
.panel { padding: var(--space-4); overflow-y: auto; min-width: 0; scrollbar-gutter: stable; scrollbar-color: var(--muted) var(--surface); }
.panel__tier { color: var(--accent); text-transform: capitalize; margin-bottom: var(--space-2); }
.panel__name { overflow-wrap: anywhere; margin-bottom: var(--space-2); }
.panel__desc { color: var(--muted); }
#panelsource { display: flex; align-items: center; min-height: 44px; margin-top: var(--space-2); }
#panelmeta { color: var(--muted); overflow-wrap: anywhere; }
.panel__chain { list-style: none; margin-top: var(--space-3); }
.panel__chain li { border-top: 1px solid var(--border); padding-block: var(--space-2); overflow-wrap: anywhere; }
.panel__chain button { width: 100%; text-align: left; background: var(--surface-raised); overflow-wrap: anywhere; }
.panel__chain span, .panel__chain p { display: block; margin-top: var(--space-2); color: var(--muted); }
.panel__ev { color: var(--muted); margin-top: var(--space-3); }
.results-region { display: grid; grid-template-rows: auto auto minmax(0, 1fr); min-height: 0; border-top: 1px solid var(--border); }
.results-heading { display: flex; justify-content: space-between; gap: var(--space-2); padding: var(--space-3) var(--space-4) var(--space-1); }
#results-count { color: var(--accent); font-variant-numeric: tabular-nums; }
#results-hint { padding: 0 var(--space-4) var(--space-3); color: var(--muted); }
#gresults { list-style: none; overflow-y: auto; padding: 0 var(--space-2) var(--space-2); min-height: 0; scrollbar-gutter: stable; }
#gresults li + li { margin-top: var(--space-1); }
#gresults button { display: flex; flex-direction: column; align-items: flex-start; width: 100%; text-align: left; min-height: 64px; gap: var(--space-1); border-color: transparent; border-radius: 4px; padding: var(--space-3) var(--space-2); overflow-wrap: anywhere; }
#gresults button strong { font-weight: 600; }
#gresults button span { color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
#gresults button span mark { background: none; color: var(--accent); font-weight: 600; }
#gresults button[aria-pressed="true"] { border-color: var(--accent); }
.result-qualifier { font-weight: 600; }
.empty-result { padding: var(--space-4); color: var(--muted); }
.statusbar { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-1) var(--space-4); min-height: 52px; border-top: 1px solid var(--border); background: var(--surface); }
.status-fields { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-1) var(--space-4); min-width: 0; flex: 1; font-variant-numeric: tabular-nums; }
.status-fields span { color: var(--muted); overflow-wrap: anywhere; }
.status-fields #status-context { color: var(--text); }
.statusbar > a { display: flex; align-items: center; }
.reference-section { margin: var(--space-4); border: 1px solid var(--border); border-radius: 6px; background: var(--surface); }
summary { padding: var(--space-3) var(--space-4); cursor: pointer; }
.reference-section > summary { font-weight: 600; }
.lib, .sols, .help-body { padding: var(--space-4); }
.lib__lede, .sols__lede { color: var(--muted); margin-block: var(--space-3) var(--space-4); max-width: 80ch; }
.lib__cat { border-top: 1px solid var(--border); }
.lib__catname { font-weight: 600; }
.lib__catname span { float: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.lib__grid, .sols__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: var(--space-4); align-items: start; }
.card, .sol { padding: var(--space-4); border: 1px solid var(--border); border-radius: 6px; min-width: 0; overflow-wrap: anywhere; }
.card__top { display: flex; gap: var(--space-3); color: var(--muted); margin-bottom: var(--space-2); }
.card p, .sol p { margin-block: var(--space-3); color: var(--muted); }
.card footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-2); }
.card footer a { display: inline-flex; align-items: center; min-height: 44px; }
.lic, .qual { color: var(--muted); }
.qual { display: block; font-weight: 400; }
.sol__head { display: flex; gap: var(--space-3); justify-content: space-between; flex-wrap: wrap; }
.sol__tier { color: var(--accent); }
.sol__chain { padding-left: var(--space-6); }
.sol__chain li { padding: var(--space-1); }
.help-body p { margin-block: var(--space-3); max-width: 80ch; }
.close { padding: var(--space-6); border-top: 1px solid var(--border); }
.close__lede { max-width: 80ch; color: var(--muted); margin-block: var(--space-3); }
.credits { display: grid; gap: var(--space-3); margin-block: var(--space-4); }
.credits > div { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.close__credit { color: var(--muted); }
.no-js { padding: var(--space-4); }
html:not(.js) .workspace { height: auto; min-height: 0; }
html:not(.js) .toolbar, html:not(.js) .workspace__body, html:not(.js) .statusbar,
html:not(.js) .context-actions button { display: none; }
html:not(.js) .context-row { align-items: start; }
@media (max-width: 1199px) {
  .toolbar { grid-template-columns: minmax(240px, 1fr) minmax(0, 2.4fr); }
  .filter-fields { grid-template-columns: 1fr 1fr 1fr; gap: var(--space-2); }
  .field--evidence { grid-column: 1 / -1; flex-direction: row; align-items: center; }
  .field--evidence label { margin-right: var(--space-2); }
  .context-row { align-items: flex-start; }
  .context-actions { max-width: 400px; justify-content: flex-end; }
  #graph-caption { display: none; }
}
@media (max-width: 767px) {
  .workspace { min-height: 760px; }
  .workspace__header { padding: var(--space-2) var(--space-3); }
  .toolbar { display: flex; align-items: flex-end; gap: var(--space-2); flex-wrap: wrap; }
  .field--search { flex: 1; min-width: 220px; }
  .filter-disclosure > summary { display: list-item; padding: var(--space-2); border: 1px solid var(--border); border-radius: 6px; }
  .filter-disclosure[open] { flex-basis: 100%; }
  .filter-disclosure[open] > summary { margin-bottom: var(--space-2); }
  .filter-fields { grid-template-columns: 1fr 1fr; }
  .field--evidence { grid-column: auto; flex-direction: column; align-items: stretch; }
  .field--evidence label { margin: 0; }
  .context-row { display: block; padding-top: var(--space-2); }
  .eyebrow { display: none; }
  .context-actions { max-width: none; justify-content: flex-start; gap: var(--space-1); margin-top: var(--space-2); }
  .context-actions button, .context-actions a { padding-inline: var(--space-2); }
  .context-actions a { margin-left: auto; }
  .context-actions a[data-open="solutions"] { display: none; }
  .workspace__body { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(205px, 1fr) minmax(220px, .9fr); }
  .graph-tools { padding: var(--space-1) var(--space-3); gap: var(--space-2); }
  .inspector { border-left: 0; border-top: 1px solid var(--border); grid-template-columns: 1fr 1fr; grid-template-rows: minmax(0, 1fr); }
  .panel { padding: var(--space-3); }
  .results-region { border-top: 0; border-left: 1px solid var(--border); }
  .results-heading { padding: var(--space-2); flex-wrap: wrap; }
  #results-hint { display: none; }
  .results-region { grid-template-rows: auto minmax(0, 1fr); }
  #gresults { padding: 0 var(--space-1) var(--space-1); }
  #gresults button { padding: var(--space-2); }
  #gresults button span { -webkit-line-clamp: 2; }
  .statusbar { padding: var(--space-1) var(--space-3); gap: var(--space-2); }
  .status-fields { column-gap: var(--space-3); }
  .status-fields { overflow-wrap: anywhere; }
  .workspace:has(#gfilters[open]) .workspace__header { max-height: 40dvh; overflow-y: auto; }
  .workspace:has(#gfilters[open]) .workspace__body { grid-template-rows: minmax(140px, 1fr) minmax(170px, .9fr); }
  .reference-section { margin: var(--space-3); }
}
@media (max-width: 380px) {
  .context-actions { gap: 0; }
  .context-actions a { padding-inline: var(--space-1); }
  .context-actions button { padding-inline: 6px; }
}
@media (max-height: 650px) and (min-width: 768px) {
  .workspace { min-height: 580px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}


/* Cinematic intro entry point (hand-written; survives build.py --write) */
.intro-link {
  position: fixed; right: 18px; bottom: 16px; z-index: 40;
  font: 600 11px ui-monospace, Menlo, monospace; letter-spacing: 0.08em;
  color: #9aa3b2; text-decoration: none;
  padding: 8px 14px; border: 1px solid #232833; border-radius: 999px;
  background: #0a0e18;
  transition: color 0.25s, border-color 0.25s;
}
.intro-link:hover { color: #00e5ff; border-color: #00e5ff66; }