:root {
  --stage: #1e252e;
  --panel: #252d37;
  --panel-2: #2c3540;
  --line: #36424f;
  --bone: #e6e1d6;
  --muted: #8d99a6;
  --film: #8cc7c1;
  --film-ink: #12302d;
  --paper: #efe8da;
  --ink: #2a2420;
  --ink-soft: #6b5f55;
  --warn: #e4a487;
  --good: #9bd3a3;
  --serif: Charter, "Bitstream Charter", "Iowan Old Style", "Sitka Text", Cambria, Georgia, "DejaVu Serif", serif;
  --sans: Inter, "Segoe UI", Cantarell, "Noto Sans", Ubuntu, system-ui, -apple-system, sans-serif;
  --r-s: 4px;
  --r-m: 8px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--stage); color: var(--bone); font: 14px/1.45 var(--sans); overflow: hidden; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--film); outline-offset: 2px; }
[hidden] { display: none !important; }
a { color: var(--film); }

#app {
  height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr 340px;
  grid-template-rows: 52px 1fr 30px;
  grid-template-areas: "top top top" "side stage insp" "status status status";
}

/* ---------- top bar ---------- */
.topbar {
  grid-area: top; display: flex; align-items: center; gap: 16px;
  padding: 0 14px; background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 600; letter-spacing: 0.01em; white-space: nowrap; }
.brand svg { width: 22px; height: 22px; fill: none; stroke: var(--film); stroke-width: 2; stroke-linecap: round; }
.brand svg circle { fill: var(--film); stroke: none; }

.search { position: relative; flex: 1; max-width: 460px; }
.search input {
  width: 100%; height: 34px; padding: 0 12px; border-radius: var(--r-m);
  background: var(--stage); border: 1px solid var(--line); outline: none;
}
.search input:focus { border-color: var(--film); }
.search-results {
  position: absolute; top: 38px; left: 0; right: 0; z-index: 20; margin: 0; padding: 4px; list-style: none;
  max-height: 60vh; overflow: auto; background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--r-m);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}
.search-results li { padding: 6px 10px; border-radius: var(--r-s); cursor: pointer; display: flex; gap: 8px; align-items: baseline; }
.search-results li .n { flex: 1; }
.search-results li .c { color: var(--muted); font-size: 12px; white-space: nowrap; }
.search-results li[aria-selected="true"], .search-results li:hover { background: var(--line); }
.search-results .none { color: var(--muted); cursor: default; }

.seg { display: inline-flex; background: var(--stage); border: 1px solid var(--line); border-radius: var(--r-m); padding: 2px; }
.seg button { border: 0; background: none; padding: 5px 12px; border-radius: 6px; color: var(--muted); }
.seg button.on { background: var(--film); color: var(--film-ink); font-weight: 600; }
.seg.small button { padding: 4px 8px; font-size: 12.5px; }
.seg.full { display: flex; margin: 12px; }
.seg.full button { flex: 1; }

.tools { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.icon-btn {
  height: 32px; padding: 0 10px; border-radius: var(--r-m); border: 1px solid var(--line);
  background: transparent; color: var(--bone); font-size: 13px; white-space: nowrap;
}
.icon-btn:hover { background: var(--panel-2); }
.icon-btn[aria-pressed="true"] { background: var(--film); color: var(--film-ink); border-color: var(--film); }
#btnHelp { width: 32px; padding: 0; }

/* ---------- sidebar ---------- */
.sidebar { grid-area: side; background: var(--panel); border-right: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tab { flex: 1; border: 0; background: none; padding: 11px 0 10px; color: var(--muted); border-bottom: 2px solid transparent; }
.tab.on { color: var(--bone); border-bottom-color: var(--film); }
.pane { flex: 1; overflow: auto; min-height: 0; display: flex; flex-direction: column; }
.pane[data-pane="sections"] { padding: 14px; gap: 10px; }
.note { color: var(--muted); font-size: 13px; margin: 0; }
.note.warn { color: var(--warn); }

.layer-list { list-style: none; margin: 0; padding: 8px; }
.layer-list li { display: flex; align-items: center; gap: 10px; padding: 7px 8px; border-radius: var(--r-s); }
.layer-list li:hover { background: var(--panel-2); }
.layer-list .swatch { width: 14px; height: 14px; }
.layer-list .name { flex: 1; }
.layer-list .count { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.layer-list .solo { border: 0; background: none; color: var(--muted); font-size: 12px; padding: 2px 4px; opacity: 0; }
.layer-list li:hover .solo, .layer-list .solo:focus-visible { opacity: 1; }
.layer-list .solo:hover { color: var(--film); }
.pane-foot { margin-top: auto; padding: 12px 16px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; }

.toggle { appearance: none; width: 30px; height: 17px; border-radius: 9px; background: var(--line); position: relative; cursor: pointer; flex: none; margin: 0; }
.toggle::after { content: ""; position: absolute; top: 2px; left: 2px; width: 13px; height: 13px; border-radius: 50%; background: var(--muted); transition: transform 0.12s; }
.toggle:checked { background: var(--film); }
.toggle:checked::after { transform: translateX(13px); background: var(--film-ink); }

.swatch { display: inline-block; width: 11px; height: 11px; border-radius: 3px; flex: none; }

.tree { list-style: none; margin: 0; padding: 0 6px 12px; }
.tree ul { list-style: none; margin: 0; padding-left: 14px; }
.tree .row { display: flex; align-items: center; gap: 4px; padding: 2px 4px; border-radius: var(--r-s); }
.tree .row:hover { background: var(--panel-2); }
.tree .row.sel { background: rgba(140, 199, 193, 0.18); }
.tree .caret { width: 18px; height: 20px; border: 0; background: none; color: var(--muted); padding: 0; flex: none; font-size: 10px; }
.tree .caret.leaf { visibility: hidden; }
.tree .eye { width: 22px; height: 20px; border: 0; background: none; padding: 0; flex: none; color: var(--muted); }
.tree .eye svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.tree .eye.off { opacity: 0.35; }
.tree .eye.part { color: var(--film); opacity: 0.6; }
.tree .label { flex: 1; border: 0; background: none; text-align: left; padding: 2px 2px; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree .cnt { color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }

.radio-col { display: flex; flex-direction: column; gap: 8px; }
.radio-col label, .check { display: flex; gap: 8px; align-items: center; }
.slider-label { color: var(--muted); font-size: 12.5px; margin-top: 6px; }
input[type="range"] { width: 100%; accent-color: var(--film); }
input[type="radio"], input[type="checkbox"] { accent-color: var(--film); }

/* ---------- stage ---------- */
.stage { grid-area: stage; position: relative; min-width: 0; min-height: 0; background: radial-gradient(ellipse at 50% 40%, #27303b 0%, var(--stage) 70%); }
#viewport { width: 100%; height: 100%; display: block; cursor: grab; outline: none; }
#viewport.dragging { cursor: grabbing; }
.stage-hint { position: absolute; bottom: 10px; left: 0; right: 0; text-align: center; margin: 0; color: var(--muted); font-size: 12px; pointer-events: none; opacity: 0.8; }
.loading { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); pointer-events: none; }

.pin { position: absolute; left: 0; top: 0; pointer-events: none; transform: translate(-50%, -100%); }
.pin span {
  display: block; margin-bottom: 14px; padding: 4px 9px; border-radius: var(--r-s);
  background: var(--paper); color: var(--ink); font: 600 13px/1.3 var(--serif); white-space: nowrap;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}
.pin::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 1px; height: 14px; background: var(--paper); }
.pin::before { content: ""; position: absolute; left: calc(50% - 3px); bottom: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--paper); }

.hover-tip { position: absolute; pointer-events: none; padding: 3px 8px; border-radius: var(--r-s); background: rgba(20, 25, 32, 0.92); border: 1px solid var(--line); font-size: 12.5px; white-space: nowrap; transform: translate(12px, 12px); }

/* ---------- inspector ---------- */
.inspector { grid-area: insp; background: var(--panel); border-left: 1px solid var(--line); overflow: auto; padding: 16px; display: flex; flex-direction: column; gap: 16px; min-height: 0; }
.empty h2 { font: 600 19px/1.3 var(--serif); margin: 8px 0 8px; color: var(--bone); }
.empty p { color: var(--muted); margin: 0; }

.tag {
  position: relative; background: var(--paper); color: var(--ink); border-radius: 6px 6px 6px 22px;
  padding: 20px 18px 16px 30px; box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}
.tag-hole { position: absolute; left: 11px; top: 22px; width: 9px; height: 9px; border-radius: 50%; background: var(--panel); box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5); }
.tag h2 { font: 600 22px/1.2 var(--serif); margin: 0 0 4px; overflow-wrap: anywhere; }
.tag-id { margin: 0 0 10px; color: var(--ink-soft); font: italic 14px var(--serif); }
.tag-cat { display: flex; align-items: center; gap: 7px; margin: 0 0 12px; font-size: 13px; }
.tag-cat #tagCount { color: var(--ink-soft); }
.tag-path { list-style: none; margin: 0 0 14px; padding: 10px 0 0; border-top: 1px dashed rgba(42, 36, 32, 0.3); display: flex; flex-wrap: wrap; gap: 2px 0; font-size: 12.5px; }
.tag-path li { display: inline; }
.tag-path li + li::before { content: "\203A"; margin: 0 6px; color: var(--ink-soft); }
.tag-path button { border: 0; background: none; padding: 0; color: var(--ink-soft); text-decoration: underline; text-decoration-color: rgba(42, 36, 32, 0.25); text-underline-offset: 2px; }
.tag-path button:hover { color: var(--ink); }
.tag-path li:last-child button { color: var(--ink); text-decoration: none; font-weight: 600; }
.tag-actions { display: flex; gap: 6px; }
.tag-actions button { flex: 1; padding: 6px 0; border-radius: var(--r-s); border: 1px solid rgba(42, 36, 32, 0.25); background: rgba(255, 255, 255, 0.35); color: var(--ink); font-size: 13px; }
.tag-actions button:hover { background: rgba(255, 255, 255, 0.7); }

.wiki { display: flex; flex-direction: column; gap: 10px; }
.wiki img { width: 100%; max-height: 220px; object-fit: contain; background: #fff; border-radius: var(--r-m); }
.wiki p { margin: 0; color: var(--bone); max-width: 70ch; }
.wiki a { font-size: 13px; }

/* ---------- quiz ---------- */
.quiz { display: flex; flex-direction: column; gap: 12px; }
.quiz h2 { font: 600 20px/1.3 var(--serif); margin: 0; }
.quiz > div { display: flex; flex-direction: column; gap: 12px; }
.quiz select { background: var(--stage); border: 1px solid var(--line); border-radius: var(--r-s); padding: 5px 8px; }
.primary { background: var(--film); color: var(--film-ink); border: 0; border-radius: var(--r-m); padding: 8px 14px; font-weight: 600; }
.primary:hover { filter: brightness(1.08); }
.quiz-row { display: flex; gap: 8px; flex-wrap: wrap; }
.quiz-row button:not(.primary) { background: none; border: 1px solid var(--line); border-radius: var(--r-m); padding: 7px 12px; }
.quiz-progress { margin: 0; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.quiz-options { display: flex; flex-direction: column; gap: 6px; }
.quiz-options button { text-align: left; padding: 9px 12px; border-radius: var(--r-m); border: 1px solid var(--line); background: var(--panel-2); }
.quiz-options button:hover:not(:disabled) { border-color: var(--film); }
.quiz-options button.right { border-color: var(--good); background: rgba(155, 211, 163, 0.16); }
.quiz-options button.wrong { border-color: var(--warn); background: rgba(228, 164, 135, 0.16); }
.quiz-feedback { margin: 0; min-height: 1.4em; }
.quiz-feedback.right { color: var(--good); }
.quiz-feedback.wrong { color: var(--warn); }
.missed { margin: 0; padding-left: 18px; }
.missed button { border: 0; background: none; padding: 2px 0; color: var(--film); text-align: left; }

/* ---------- status bar ---------- */
.statusbar { grid-area: status; display: flex; align-items: center; gap: 14px; padding: 0 14px; background: var(--panel); border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; }
.statusbar .attr { margin-left: auto; overflow: hidden; text-overflow: ellipsis; }
.text-btn { border: 0; background: none; padding: 0; color: var(--film); text-decoration: underline; text-underline-offset: 2px; font-size: inherit; }

/* ---------- dialogs ---------- */
dialog { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); color: var(--bone); padding: 0; width: min(560px, 92vw); }
dialog::backdrop { background: rgba(8, 10, 14, 0.6); }
.dialog-body { padding: 22px 24px 18px; display: flex; flex-direction: column; gap: 12px; }
.dialog-body h2 { font: 600 21px var(--serif); margin: 0; }
.dialog-body p { margin: 0; max-width: 68ch; }
#dataInfo { background: var(--stage); border-radius: var(--r-m); padding: 10px 12px; font-size: 13px; color: var(--muted); }
#dataInfo strong { color: var(--bone); font-weight: 600; }
.choices { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.choices button:not(.primary) { background: none; border: 1px solid var(--line); border-radius: var(--r-m); padding: 8px 14px; text-align: left; }
.choices button:disabled, .primary:disabled { opacity: 0.5; cursor: progress; }
.progress .bar { height: 6px; border-radius: 3px; background: var(--stage); overflow: hidden; }
.progress #dlBar { height: 100%; width: 0; background: var(--film); transition: width 0.2s; }
.progress p { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.dialog-foot { display: flex; gap: 16px; font-size: 12.5px; }
.dialog-close { display: flex; justify-content: flex-end; }
.dialog-close button { background: none; border: 1px solid var(--line); border-radius: var(--r-m); padding: 6px 16px; }
pre { background: var(--stage); padding: 10px 12px; border-radius: var(--r-m); margin: 0; }
.keys { display: grid; grid-template-columns: 90px 1fr; gap: 6px 12px; margin: 0; }
.keys dt { font-weight: 600; color: var(--film); }
.keys dd { margin: 0; }

@media (max-width: 1150px) {
  #app { grid-template-columns: 240px 1fr 290px; }
  .seg.small, .stage-hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ---------- v0.3 additions ---------- */
.tag-latin { margin: -2px 0 4px; font: italic 15px var(--serif); color: var(--ink); }
.tag-note { margin: 0 0 12px; padding: 6px 8px; border-radius: var(--r-s); background: rgba(42, 36, 32, 0.08); color: var(--ink-soft); font-size: 12.5px; }
.atlas-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.atlas-list li { border: 1px solid var(--line); border-radius: var(--r-m); padding: 12px 14px; display: flex; flex-direction: column; gap: 6px; }
.atlas-list li.active { border-color: var(--film); }
.atlas-list .head { display: flex; align-items: baseline; gap: 10px; }
.atlas-list .title { font-weight: 600; flex: 1; }
.atlas-list .state { font-size: 12px; color: var(--muted); }
.atlas-list li.active .state { color: var(--film); }
.atlas-list p { font-size: 13px; color: var(--muted); margin: 0; }
.atlas-list .row-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.atlas-list .row-actions button:not(.primary) { background: none; border: 1px solid var(--line); border-radius: var(--r-m); padding: 6px 12px; font-size: 13px; }
.atlas-list .row-actions button:disabled { opacity: 0.5; cursor: progress; }
.atlas-list code { background: var(--stage); padding: 2px 6px; border-radius: var(--r-s); font-size: 12.5px; }
dialog { width: min(640px, 94vw); max-height: 90vh; }
.pane-foot .check { font-size: 13px; }

/* ---------- about ---------- */
.about .dialog-body { gap: 10px; }
.about-logo { width: 112px; height: 112px; object-fit: contain; align-self: flex-start; margin-bottom: 4px; border-radius: 10px; }
.about h3 { font: 600 15px var(--serif); margin: 8px 0 0; }
.about-contact { display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px; margin: 4px 0; font-size: 13.5px; }
.about-contact dt { color: var(--muted); }
.about-contact dd { margin: 0; overflow-wrap: anywhere; }
.lab-credit { color: var(--muted); text-decoration: none; white-space: nowrap; }
.lab-credit:hover { color: var(--film); text-decoration: underline; }
.loading { flex-direction: column; gap: 10px; }
.loading .bar { width: min(320px, 60%); height: 4px; border-radius: 2px; background: var(--panel-2); overflow: hidden; }
.loading .bar > div { height: 100%; width: 0; background: var(--film); }
/* One overall loading progress; preparation has no invented percentage. */
#loadingText { max-width:min(440px,85%); text-align:center; line-height:1.6; }
.loading.indeterminate .bar > div { width:35% !important; animation:model-wait 1.3s ease-in-out infinite alternate; }
@keyframes model-wait { from { transform:translateX(-100%); } to { transform:translateX(285%); } }
@media (prefers-reduced-motion:reduce) { .loading.indeterminate .bar > div { animation:none; transform:translateX(90%); } }
#aboutText { text-align:justify; }
#aboutCredit { font-size:.7rem; color:var(--muted); opacity:.65; }
#aboutCredit a { color:inherit; }
/* A small celebration of curiosity, not another settings dialog. */
#aboutDialog { width:min(560px,calc(100vw - 24px)); border-radius:22px; background:radial-gradient(ellipse at 100% 0%,#315452 0,transparent 55%),var(--panel); }
#aboutDialog .dialog-body { padding:28px; position:relative; overflow:hidden; }
.about-orbit { width:88px; height:88px; margin:0 auto 16px; border:1px solid #8cc7c155; border-radius:50%; display:grid; place-items:center; box-shadow:0 0 40px #8cc7c119,inset 0 0 24px #8cc7c111; position:relative; color:var(--film); }
.about-orbit b { font-size:1.3rem; letter-spacing:-.05em; }
.about-orbit span { position:absolute; left:-7px; top:30px; color:#f1c78e; }
.about-orbit span:nth-child(2) { left:auto; right:-7px; }
.about-eyebrow { text-align:center; font-size:.65rem; letter-spacing:.22em; color:var(--film); }
#aboutDialog .about-heading { text-align:center; font-family:var(--sans); font-size:2rem; margin:8px 0; letter-spacing:-.05em; }
.about-heading span { color:var(--film); }
.about-tagline { text-align:center; color:var(--muted); font-size:.9rem; }
.about-chips { display:flex; justify-content:center; flex-wrap:wrap; gap:8px; margin:18px 0; }
.about-chips span { border:1px solid #8cc7c133; background:#8cc7c10b; color:var(--film); border-radius:20px; padding:4px 10px; font-size:.7rem; }
#aboutText { line-height:1.85; padding:16px; background:#1e252e88; border-radius:14px; font-size:.9rem; }
#aboutSafety { font-size:.75rem; line-height:1.6; }
#aboutDialog[open] .about-orbit { animation:tutu-breathe 3s ease-in-out infinite; }
#aboutDialog[open] .dialog-body { animation:tutu-appear .3s ease-out; }
@keyframes tutu-breathe { 50% { box-shadow:0 0 45px #8cc7c138,inset 0 0 24px #8cc7c120; transform:translateY(-3px); } }
@keyframes tutu-appear { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }
@media (prefers-reduced-motion:reduce) { #aboutDialog[open] .about-orbit,#aboutDialog[open] .dialog-body { animation:none; } }
.brand-icon { width:32px; height:32px; flex:none; object-fit:contain; border-radius:8px; }

.body-gender button,.body-quality button{min-width:34px;font-weight:700}.body-gender button.on,.body-quality button.on{background:var(--film);color:var(--film-ink)}@media(max-width:900px){.body-gender button,.body-quality button{padding:5px 7px;font-size:12px}}

/* Fixed viewer shell: scroll belongs to individual panes, never the document. */
html,body{width:100%;height:100%;overflow:hidden;overscroll-behavior:none}
#app{height:100dvh;max-width:100%;min-height:0;min-width:0}

/* One shared search input: desktop dropdown, native modal on small screens. */
#searchDialog{box-sizing:border-box;width:min(460px,calc(100vw - 24px));max-width:none;max-height:calc(100dvh - 24px);margin:12px auto auto;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--panel-2);color:var(--text);box-shadow:0 16px 64px #0008;overflow:auto}
#searchDialog::backdrop{background:#081115b8;backdrop-filter:blur(3px)}
#searchDialog header{position:static;display:flex;align-items:center;justify-content:space-between;height:auto;min-height:0;margin:0 0 10px;padding:0;border:0;background:none}
#searchDialog header strong{font-size:15px;font-weight:600}
#searchDialog #mobileSearchClose{display:grid;place-items:center;width:36px;min-width:36px;height:36px;min-height:36px;padding:0;font-size:24px}
#searchDialog .search{display:block;max-width:none;width:100%}
#searchDialog .search input{height:44px;font-size:16px;padding:0 12px}
#searchDialog .search-results{position:static;inset:auto;max-height:calc(100dvh - 190px);margin:10px 0 0;padding:4px;border:0;border-radius:8px;box-shadow:none;overscroll-behavior:contain}
#searchDialog .search-results li{box-sizing:border-box;min-height:52px;align-items:flex-start;flex-direction:column;gap:3px;padding:9px 10px}
#searchDialog .search-results li .n{flex:none;line-height:1.35}
#searchDialog .search-results li .c{font-size:11px;white-space:normal}
#searchHint{margin:10px 2px 0;color:var(--muted);font-size:12px;line-height:1.4}

/* Search uses a compact fixed input/mode row; only result groups scroll. */
.search-results{scrollbar-width:none}
.search-results::-webkit-scrollbar{display:none}
.search-modes{display:flex;gap:4px}
.search-modes button{display:grid;place-items:center;min-width:34px;width:34px;height:32px;min-height:32px;padding:0;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--muted)}
.search-modes button[aria-pressed="true"]{background:var(--film);color:var(--film-ink)}
.search-modes button:focus-visible,.info-search:focus-visible,.search-group-heading:focus-visible{outline:2px solid var(--film);outline-offset:-2px}
.search-result-group{margin:3px 0}
.search-group-heading{display:flex;align-items:center;gap:7px;width:100%;min-height:36px;padding:6px 10px;border:0;background:transparent;text-align:left;border-radius:5px}
.search-group-heading:hover{background:var(--line)}
.search-group-label{flex:1;font-size:12px;font-weight:600}
.search-group-count{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
.search-group-chevron{color:var(--muted);font-size:20px;line-height:1;transform:rotate(90deg)}
.search-group-heading[aria-expanded="false"] .search-group-chevron{transform:none}
.search-result-group ul{margin:0;padding:0;list-style:none}
.search-results .search-result-group li{padding:7px 10px 7px 30px;font-size:13px;line-height:1.4}
#searchDialog .search-modes button{width:36px;height:36px}
#searchDialog .search-result-group li{padding:9px 10px 9px 30px;min-height:44px}
#searchDialog .search-group-heading{min-height:44px}
/* A movable tool strip must never cover an open desktop result list. */
.topbar:has(.search-results:not([hidden])){position:relative;z-index:120}

/* Fixed settings envelope: tabs change content, never the window dimensions. */
#aboutDialog.model-config{width:min(600px,calc(100vw - 24px));height:min(680px,calc(100dvh - 32px));max-height:calc(100dvh - 32px);padding:0;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--bone)}
#aboutDialog.model-config .dialog-body{height:100%;padding:20px;gap:14px;animation:none;overflow:hidden}
#aboutDialog.model-config .config-tabs{flex:none;display:flex;gap:8px;margin:0;padding:0 0 10px;border-bottom:1px solid var(--line)}
#aboutDialog.model-config .config-tabs button{flex:1;min-height:40px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--bone);padding:6px 8px}
#aboutDialog.model-config .config-tabs button[aria-selected=true]{border-color:var(--film);background:var(--panel-2);color:var(--film)}
#aboutDialog.model-config .config-pages{flex:1;min-height:0;overflow:hidden}
#aboutDialog.model-config [data-config-page]{height:100%;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:0 4px 8px 0}
#aboutDialog.model-config h3{font:600 15px var(--sans);margin:2px 0 6px}
#aboutDialog.model-config .config-help{font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 12px}
#aboutDialog.model-config .body-quality{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0 0 16px;padding:0;border:0;background:none}
#aboutDialog.model-config .body-quality button{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:5px;min-height:110px;min-width:0;height:auto;padding:30px 10px 12px!important;border:1px solid var(--line);border-radius:8px;background:var(--stage);color:var(--bone);font:500 12px/1.4 var(--sans);text-align:left;white-space:normal}
#aboutDialog.model-config .body-quality button::after{display:none}
#aboutDialog.model-config .body-quality button small{font-size:11px;font-weight:400;line-height:1.45;color:var(--muted)}
#aboutDialog.model-config .body-quality button .quality-mark{position:absolute;top:8px;right:10px;visibility:hidden;color:var(--film)}
#aboutDialog.model-config .body-quality button[aria-pressed=true]{border:2px solid var(--film);padding:29px 9px 11px!important;background:var(--panel-2);color:var(--bone)}
#aboutDialog.model-config .body-quality button[aria-pressed=true] .quality-mark{visibility:visible}
#aboutDialog.model-config .config-check{display:flex;gap:10px;align-items:center;min-height:44px;font-size:13px;padding:10px 0;border-bottom:1px solid var(--line)}
#aboutDialog.model-config .config-check input{width:16px;height:16px;accent-color:var(--film);flex:none}
#aboutDialog.model-config .config-cache{margin-top:20px}
#aboutDialog.model-config .config-clear-cache{background:var(--stage);color:var(--bone);border:1px solid var(--muted);border-radius:8px;min-height:40px;padding:8px 14px;font-size:13px}
#aboutDialog.model-config .config-clear-cache:hover{border-color:var(--film);background:var(--panel-2)}
#aboutDialog.model-config .config-clear-cache:disabled{opacity:.6;cursor:wait}
#aboutDialog.model-config .config-status{min-height:18px;font-size:12px;line-height:1.5;color:var(--film);margin:8px 0 0}
#aboutDialog.model-config .dialog-close{flex:none;padding-top:10px;border-top:1px solid var(--line)}
#aboutDialog.model-config .dialog-close button{min-height:36px;color:var(--bone);background:var(--panel-2)}
.topbar #btnLanguage svg{display:block;width:20px;height:20px;flex:none}
@media(max-width:500px){#aboutDialog.model-config .dialog-body{padding:14px;gap:10px}#aboutDialog.model-config .body-quality{gap:6px}#aboutDialog.model-config .body-quality button{min-height:128px;font-size:12px;padding-left:8px!important;padding-right:8px!important}}
/* Locale is explicit without cramming letters into the globe's fine lines. */
.topbar-right>#btnLanguage{gap:5px;padding:6px 8px;min-width:58px}
#btnLanguage .language-code{font:600 10px/1 var(--sans);letter-spacing:.03em}
.viewer-history{display:flex;gap:2px;flex:none;align-items:center}
.viewer-history .icon-btn{display:grid;place-items:center;width:32px;min-width:32px;height:36px;min-height:36px;padding:5px;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--bone)}
.viewer-history .icon-btn:hover:not(:disabled){background:var(--panel-2);border-color:var(--line)}
.viewer-history .icon-btn:disabled{opacity:.28;cursor:default}
.viewer-history-status{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:160;background:var(--panel);color:var(--bone);border:1px solid var(--line);border-radius:8px;padding:10px 14px;font:12px/1.5 var(--sans);max-width:calc(100vw - 24px)}
.source-lesson-tools>.tool-status[hidden]{display:none!important}

/* One floating Search on every viewport; one compact header launcher. */
.topbar #mobileSearch{display:grid;place-items:center;width:40px;min-width:40px;height:40px;padding:8px;border:0;background:transparent}
#searchDialog{position:fixed;inset:auto;left:max(6px,calc(50vw - 230px));top:72px;margin:0;width:min(460px,calc(100vw - 12px));height:min(560px,calc(100dvh - 84px));min-width:min(280px,calc(100vw - 12px));min-height:220px;resize:none;overflow:hidden;padding:0 10px 0}
#searchDialog[open]{display:flex;flex-direction:column}
#searchDialog header{flex:none;cursor:grab;user-select:none;margin:0 -10px 8px;padding:5px 10px;background:var(--panel);border-bottom:1px solid var(--line)}
#searchDialog #mobileSearchClose{width:30px;min-width:30px;height:30px;min-height:30px;border:0;background:transparent;border-radius:5px}
#searchDialog #mobileSearchClose:hover{background:var(--line)}
#searchDialog header:active{cursor:grabbing}
#searchDialog .search{display:flex;flex-direction:column;flex:1;min-height:0}
#searchDialog .search-input-row{display:flex;align-items:center;gap:6px;flex:none}
#searchDialog .search input{flex:1;min-width:0;width:0;height:34px;min-height:34px;padding:0 9px}
#searchDialog .search-modes{flex:none;gap:2px}
#searchDialog .search-modes button{width:32px;min-width:32px;height:34px;min-height:34px;padding:0}
#searchDialog .search-results{flex:1;min-height:0;max-height:none;overflow:auto}
#searchDialog #searchHint{flex:none;min-height:16px;margin:0 -10px;padding:5px 30px 5px 12px;border-top:1px solid var(--line);font-size:11px;line-height:16px}
#searchResize{position:absolute;right:0;bottom:0;width:26px;height:26px;min-width:26px;min-height:26px;padding:0;border:0;background:transparent;color:var(--muted);cursor:nwse-resize;touch-action:none;font-size:17px;line-height:1}
#searchResults .search-result-group [role=option],#searchResults .search-result-group [role=option] .n{font-weight:400}
#searchResults .search-group-label{font-weight:600}
/* Header controls are square; SVGs never shrink or inherit glyph proportions. */
.topbar-right{display:flex;align-items:center;gap:3px;flex:none}
.topbar-right>#handCamera,.topbar-right>#btnHelp{display:grid;place-items:center;width:36px;min-width:36px;height:40px;min-height:40px;padding:0;border:0;background:transparent;flex:none}
.topbar-right>#handCamera svg,.topbar-right>#btnHelp svg{display:block;width:20px;height:20px;flex:none;aspect-ratio:1;fill:none;stroke:currentColor;stroke-linejoin:round;stroke-linecap:round}
.topbar-right>#handCamera[aria-pressed=true]{color:var(--film)}
/* Independent, nonmodal section window. The controls are live, never cloned. */
#sectionDialog{position:fixed;inset:auto;left:max(6px,calc(50vw - 130px));top:116px;margin:0;padding:0;width:min(260px,calc(100vw - 12px));max-height:calc(100dvh - 70px);border:1px solid var(--line);border-radius:12px;background:var(--panel-2);color:var(--bone);box-shadow:0 12px 40px #0006;overflow:auto;z-index:125}
#sectionDialog[open]{display:flex;flex-direction:column}
#sectionDialog header{position:static;display:flex;align-items:center;justify-content:space-between;min-height:30px;flex:none;padding:2px 8px;border-bottom:1px solid var(--line);background:var(--panel);cursor:grab;user-select:none}
#sectionDialog header strong{font-size:14px;font-weight:600}
#sectionClose{display:grid;place-items:center;width:30px;min-width:30px;height:30px;min-height:30px;border:0;padding:0;background:transparent;color:var(--bone);font-size:24px;border-radius:5px}
#sectionClose:hover{background:var(--line)}
#sectionDialog [data-pane=sections]{display:flex;flex-direction:column;padding:8px;gap:6px;overflow:visible}
#sectionDialog .radio-col{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px}
#sectionDialog .radio-col label{position:relative;display:flex;align-items:center;justify-content:center;box-sizing:border-box;min-height:28px;border:1px solid var(--line);border-radius:5px;padding:2px 0;font-size:12px;cursor:pointer}
#sectionDialog .radio-col input{position:absolute;opacity:0;width:1px;height:1px}
#sectionDialog .radio-col label:has(input:checked){background:var(--film);color:var(--film-ink);border-color:var(--film)}
#sectionDialog .radio-col label:has(input:focus-visible){outline:2px solid var(--bone);outline-offset:2px}
#sectionDialog .section-adjust{display:flex;align-items:center;gap:8px;min-width:0}
#sectionDialog #planePos{flex:1;min-width:0;width:0;height:28px;min-height:28px;margin:0;accent-color:var(--film)}
#sectionDialog .check{flex:none;gap:4px;min-height:28px;margin:0;font-size:12px;white-space:nowrap;cursor:pointer}
#sectionDialog .check input{margin:0}
@media(max-width:950px){.topbar-right>#handCamera,.topbar-right>#btnHelp{height:44px;min-height:44px;width:32px;min-width:32px}.source-lesson-tools [data-action=section] svg{width:20px;height:20px}}

/* Install tab uses existing Settings envelope; no eager offline downloads. */
#aboutDialog.model-config .config-tabs button{min-width:0;font-size:13px}
.config-install .install-brand{display:flex;align-items:center;gap:12px;margin:2px 0 18px}
.config-install .install-brand img{border-radius:12px;flex:none}
.config-install .install-brand .config-help{margin:4px 0 0!important}
#installAppButton{min-height:44px;width:100%;padding:10px 14px;background:var(--film);color:var(--stage);border:1px solid var(--film);border-radius:8px;font:600 14px/1.4 var(--sans);white-space:normal}
#installAppButton:disabled{opacity:.65;cursor:default}
#installAvailability{margin:10px 0 0!important}
#installInstructions{margin:8px 0 18px;border-radius:8px}
#installInstructions:focus-visible{outline:2px solid var(--film);outline-offset:3px}
#installInstructions section{padding:12px;border:1px solid var(--line);border-radius:8px;margin:10px 0}
#installInstructions p{font-size:13px;line-height:1.7;margin:4px 0 0}
.config-install .install-offline{border-top:1px solid var(--line);padding-top:12px}
@media(max-width:400px){#aboutDialog.model-config .config-tabs{gap:2px}#aboutDialog.model-config .config-tabs button{padding:6px 3px;font-size:12px}}

/* Measured, deletable background cache; never presented as fully offline. */
#aboutDialog.model-config .config-assets{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}
#aboutDialog.model-config .config-assets .asset-total{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin:8px 0 4px;font-size:13px}
#aboutDialog.model-config .config-assets .asset-total span{color:var(--muted);font-size:12px;text-align:right}
#aboutDialog.model-config .asset-groups{list-style:none;margin:10px 0;padding:0;display:grid;gap:8px}
#aboutDialog.model-config .asset-groups li{display:grid;grid-template-columns:1fr auto;gap:2px 10px;font-size:12px;line-height:1.5}
#aboutDialog.model-config .asset-groups li>span:nth-child(2){color:var(--muted);white-space:nowrap}
#aboutDialog.model-config .asset-groups progress{grid-column:1/-1;width:100%;height:5px;accent-color:var(--film)}
#aboutDialog.model-config .asset-status{font-size:12px;line-height:1.6;color:var(--muted);margin:8px 0 0;min-height:17px}
#aboutDialog.model-config .asset-actions{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0}
#aboutDialog.model-config .asset-actions button{min-height:36px;border:1px solid var(--muted);border-radius:8px;background:var(--stage);color:var(--bone);padding:7px 11px;font-size:12px}
#aboutDialog.model-config .asset-actions button:hover:not(:disabled){border-color:var(--film);background:var(--panel-2)}
#aboutDialog.model-config .asset-actions button:disabled{opacity:.55;cursor:default}
#aboutDialog.model-config .asset-actions [data-asset-clear]{margin-left:auto;border-color:color-mix(in srgb,var(--film) 50%,var(--muted))}
@media(max-width:500px){#aboutDialog.model-config .config-assets .asset-total{align-items:flex-start;flex-direction:column}#aboutDialog.model-config .asset-actions [data-asset-clear]{margin-left:0}}