/* Alkuaine — museum-grade periodic table explorer */
:root {
  --sans: 'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --serif: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --r: 14px;
  --r-sm: 9px;
  --gap: 16px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

#app[data-theme='dark'] {
  --bg: #07080a;
  --fg: #f2f3f5;
  --fg2: rgba(242, 243, 245, .64);
  --fg3: rgba(242, 243, 245, .4);
  --line: rgba(255, 255, 255, .085);
  --line2: rgba(255, 255, 255, .14);
  --panel: rgba(14, 15, 18, .58);
  --panel-strong: rgba(16, 17, 21, .9);
  --hover: rgba(255, 255, 255, .06);
  --on-bg: #f2f3f5;
  --on-fg: #0b0c0e;
  --shadow: 0 18px 50px rgba(0, 0, 0, .38);
  --track: rgba(255, 255, 255, .1);
  color-scheme: dark;
}

#app[data-theme='light'] {
  --bg: #e9e7e2;
  --fg: #15161a;
  --fg2: rgba(21, 22, 26, .64);
  --fg3: rgba(21, 22, 26, .42);
  --line: rgba(0, 0, 0, .08);
  --line2: rgba(0, 0, 0, .14);
  --panel: rgba(250, 249, 246, .66);
  --panel-strong: rgba(250, 249, 246, .94);
  --hover: rgba(0, 0, 0, .045);
  --on-bg: #15161a;
  --on-fg: #f7f6f3;
  --shadow: 0 18px 50px rgba(40, 34, 20, .12);
  --track: rgba(0, 0, 0, .1);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #07080a; overflow: hidden; }
body { font-family: var(--sans); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

#app {
  position: fixed; inset: 0; background: var(--bg); color: var(--fg);
  font-size: 13px; line-height: 1.45; letter-spacing: -.003em;
  transition: background .5s var(--ease), color .3s;
  user-select: none; -webkit-user-select: none;
}
#gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; outline: none; touch-action: none; }
#app .top, #app .rail, #app .dock, #app .layer { opacity: 0; transition: opacity .9s var(--ease) .2s; }
#app.ready .top, #app.ready .rail, #app.ready .dock, #app.ready .layer { opacity: 1; }

button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; letter-spacing: inherit; }
button:focus-visible, input:focus-visible { outline: 1.5px solid var(--fg2); outline-offset: 2px; }
.cap { display: block; font-size: 10.5px; font-weight: 500; letter-spacing: .085em; text-transform: uppercase; color: var(--fg3); }
svg { width: 18px; height: 18px; display: block; }

.panel {
  background: var(--panel);
  -webkit-backdrop-filter: blur(22px) saturate(1.25);
  backdrop-filter: blur(22px) saturate(1.25);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}

/* ------------------------------------------------------------------ top */
.top {
  position: absolute; top: var(--gap); left: var(--gap); right: var(--gap);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px;
  pointer-events: none; z-index: 5;
}
.top > * { pointer-events: auto; }
.brand { display: flex; align-items: center; gap: 11px; justify-self: start; }
.mark { display: flex; align-items: flex-end; gap: 2.5px; height: 20px; }
.mark i { display: block; width: 5px; border-radius: 1.5px; background: var(--fg); }
.mark i:nth-child(1) { height: 9px; opacity: .55; }
.mark i:nth-child(2) { height: 20px; }
.mark i:nth-child(3) { height: 13px; opacity: .75; }
.brand-t b { display: block; font-family: var(--serif); font-weight: 400; font-size: 23px; line-height: 1; letter-spacing: .005em; }
.brand-t small { display: block; font-size: 10.5px; color: var(--fg3); letter-spacing: .06em; text-transform: uppercase; margin-top: 3px; }

.seg {
  display: inline-flex; padding: 3px; gap: 2px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
}
.seg button { padding: 7px 14px; border-radius: 999px; color: var(--fg2); font-weight: 500; transition: background .25s, color .25s; white-space: nowrap; }
.seg button:hover { color: var(--fg); background: var(--hover); }
.seg button.on { background: var(--on-bg); color: var(--on-fg); }
.seg button.later { opacity: .45; }
.seg.sm { padding: 2px; }
.seg.sm button { padding: 4px 10px; font-size: 12px; }
.seg.wrap { flex-wrap: wrap; border-radius: 12px; }
.seg.wrap button { border-radius: 9px; }

.tools { justify-self: end; display: flex; gap: 6px; align-items: center; }
.tools .seg.envs { margin-right: 4px; }
.tools .seg.envs button { padding: 7px 12px; font-size: 12.5px; }
.ib {
  width: 36px; height: 36px; display: grid; place-items: center; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--line); color: var(--fg2);
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
  transition: color .2s, background .2s, transform .2s;
}
.ib:hover { color: var(--fg); background: var(--hover); }
.ib:active { transform: scale(.94); }
.ib.txt { font-size: 11.5px; font-weight: 600; letter-spacing: .06em; }
.ib.sm { width: 28px; height: 28px; background: transparent; border-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.ib.sm svg { width: 16px; height: 16px; }
.ib.sm:hover { background: var(--hover); }

/* ------------------------------------------------------------------ rail */
.rail {
  position: absolute; left: var(--gap); top: 76px; width: 236px;
  max-height: calc(100% - 76px - var(--gap)); overflow: auto; z-index: 4;
  padding: 8px; scrollbar-width: none;
}
.rail::-webkit-scrollbar { display: none; }
.lenses { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.lens {
  display: flex; align-items: center; gap: 8px; padding: 8px 9px; border-radius: var(--r-sm);
  color: var(--fg2); font-weight: 500; font-size: 12.5px; transition: background .2s, color .2s; text-align: left;
}
.lens svg { width: 16px; height: 16px; flex: none; opacity: .85; }
.lens:hover { background: var(--hover); color: var(--fg); }
.lens.on { background: var(--on-bg); color: var(--on-fg); }
.rail-body { padding: 10px 6px 4px; }
.hint { margin: 0 2px 12px; color: var(--fg2); font-size: 12.5px; line-height: 1.5; min-height: 2.9em; }
.plist { display: flex; flex-direction: column; gap: 10px; }
.pgroup { display: flex; flex-direction: column; gap: 1px; }
.pgroup .cap { margin: 0 2px 4px; }
.prow {
  display: flex; align-items: center; justify-content: space-between; padding: 6px 8px; border-radius: 8px;
  color: var(--fg2); text-align: left; transition: background .2s, color .2s;
}
.prow:hover { background: var(--hover); color: var(--fg); }
.prow.on { background: var(--hover); color: var(--fg); box-shadow: inset 2px 0 0 var(--fg); }
.prow em { font-style: normal; font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
.rail-body > .plist + .bars { margin-top: 14px; }
.opts { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.opt .cap { margin: 0 2px 6px; }
.legend.col { display: flex; flex-direction: column; gap: 2px; }
.legend .li { display: flex; align-items: center; gap: 9px; padding: 5px 8px; border-radius: 8px; color: var(--fg2); text-align: left; }
.legend .li i { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.legend .li.btn:hover, .legend .li.on { background: var(--hover); color: var(--fg); }
.statline { margin-top: 12px; padding: 10px 8px 2px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11.5px; color: var(--fg2); }
.src { margin: 12px 4px 0; font-size: 11px; color: var(--fg3); }
.bars { display: flex; flex-direction: column; gap: 3px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.bar { display: grid; grid-template-columns: 26px 1fr auto; align-items: center; gap: 8px; padding: 4px 6px; border-radius: 7px; }
.bar:hover { background: var(--hover); }
.bar .bs { font-weight: 600; font-size: 12px; }
.bar .bt { height: 5px; border-radius: 3px; background: var(--track); overflow: hidden; }
.bar .bt i { display: block; height: 100%; border-radius: 3px; }
.bar .bv { font-family: var(--mono); font-size: 11px; color: var(--fg2); }

/* ------------------------------------------------------------------ dock */
.dock {
  position: absolute; left: calc(50% + var(--vo, 0px)); bottom: 18px; transform: translateX(-50%); z-index: 4;
  max-width: calc(100% - 640px); min-width: 0;
  transition: opacity .4s, left .5s var(--ease);
}
.dock.empty { display: none; }
.dock-in { display: flex; align-items: center; gap: 4px; }
.legend-row { flex-wrap: wrap; justify-content: center; padding: 5px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); }
.legend-row.seg-row { padding: 0; background: none; border: 0; -webkit-backdrop-filter: none; backdrop-filter: none; }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 5px 10px 5px 8px; border-radius: 999px; color: var(--fg2); font-size: 12px; white-space: nowrap; transition: background .2s, color .2s; }
.chip i { width: 9px; height: 9px; border-radius: 50%; }
.chip:hover, .chip.on { background: var(--hover); color: var(--fg); }
.legend-row > .cap { padding: 0 10px; }
.ramp { width: 200px; height: 8px; border-radius: 4px; }

.scrub {
  display: grid; grid-template-columns: 160px minmax(360px, 560px) auto; align-items: center; gap: 18px;
  padding: 14px 16px 12px 20px; border-radius: 18px; background: var(--panel); border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(22px) saturate(1.25); backdrop-filter: blur(22px) saturate(1.25); box-shadow: var(--shadow);
}
.readout b { display: block; font-family: var(--serif); font-weight: 400; font-size: 32px; line-height: 1; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.readout span { display: block; margin-top: 5px; font-family: var(--mono); font-size: 11px; color: var(--fg3); }
.track-wrap { position: relative; padding-bottom: 22px; }
.range { -webkit-appearance: none; appearance: none; width: 100%; height: 26px; background: transparent; margin: 0; cursor: pointer; --u: 0; }
.range::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: var(--track-bg); }
.range::-moz-range-track { height: 6px; border-radius: 3px; background: var(--track-bg); }
.range::-webkit-slider-thumb { -webkit-appearance: none; width: 6px; height: 24px; margin-top: -9px; border-radius: 3px; background: var(--fg); box-shadow: 0 0 0 4px color-mix(in srgb, var(--bg) 70%, transparent), 0 2px 10px rgba(0,0,0,.3); }
.range::-moz-range-thumb { width: 6px; height: 24px; border: 0; border-radius: 3px; background: var(--fg); }
.range.temp { --track-bg: linear-gradient(90deg, #6aa6ff 0%, #9cc6ff 12%, var(--track) 22%, var(--track) 30%, #b5422a 45%, #f07a2c 62%, #ffc56b 78%, #fff1d6 92%, #ffffff 100%); }
.range.year { --track-bg: linear-gradient(90deg, var(--track) 0%, var(--track) 100%); }
.presets { position: absolute; left: 0; right: 0; bottom: 0; height: 18px; }
.presets button { position: absolute; transform: translateX(-50%); font-size: 10.5px; color: var(--fg3); white-space: nowrap; padding: 2px 4px; border-radius: 5px; }
.presets button:first-child { transform: none; }
.presets button:last-child { transform: translateX(-100%); }
.presets button:hover { color: var(--fg); background: var(--hover); }
.ib.play { width: 42px; height: 42px; background: var(--on-bg); color: var(--on-fg); border: 0; }
.ib.play svg { width: 16px; height: 16px; }

/* ------------------------------------------------------------------ card */
.card {
  position: absolute; right: var(--gap); top: 76px; width: 344px; max-height: calc(100% - 76px - 44px);
  display: flex; flex-direction: column; z-index: 4;
  transform: translateX(calc(100% + 30px)); opacity: 0; pointer-events: none;
  transition: transform .6s var(--ease), opacity .4s;
  user-select: text; -webkit-user-select: text;
}
.card.open { transform: none; opacity: 1; pointer-events: auto; }
.card-head { padding: 14px 16px 12px 18px; border-bottom: 1px solid var(--line); }
.ch-top { display: flex; align-items: center; gap: 10px; }
.znum { font-family: var(--mono); font-size: 12px; color: var(--fg2); }
.catchip { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--fg2); }
.catchip i { width: 8px; height: 8px; border-radius: 50%; }
.ch-nav { margin-left: auto; display: flex; gap: 1px; margin-right: -6px; }
.ch-name { display: flex; align-items: flex-end; gap: 14px; margin-top: 10px; }
.ch-name .sym { font-size: 54px; line-height: .86; font-weight: 600; letter-spacing: -.035em; }
.ch-name h2 { margin: 0; font-family: var(--serif); font-weight: 400; font-size: 31px; line-height: 1; letter-spacing: -.005em; }
.ch-name .alt { display: block; margin-top: 4px; font-size: 12px; color: var(--fg3); }
.tagline { margin: 12px 0 0; font-family: var(--serif); font-style: italic; font-size: 18.5px; line-height: 1.22; color: var(--fg); }
.card-scroll { overflow: auto; padding: 14px 18px 18px; scrollbar-width: thin; }
.focus { padding: 12px 14px; border-radius: 11px; background: var(--hover); margin-bottom: 14px; }
.focus .fv { margin-top: 4px; font-size: 22px; font-weight: 500; letter-spacing: -.015em; display: flex; align-items: center; gap: 8px; font-variant-numeric: tabular-nums; }
.focus .fv .na { font-size: 14px; color: var(--fg3); font-weight: 400; }
.focus .fr { margin-top: 2px; font-size: 11.5px; color: var(--fg3); font-family: var(--mono); }
.focus .dot { width: 10px; height: 10px; border-radius: 50%; }
.obar { display: flex; height: 8px; border-radius: 4px; overflow: hidden; margin: 8px 0; gap: 2px; }
.olist { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--fg2); }
.olist span { display: flex; align-items: center; gap: 7px; }
.olist i { width: 8px; height: 8px; border-radius: 2px; }
.olist b { margin-left: auto; font-weight: 500; font-family: var(--mono); font-size: 11.5px; color: var(--fg); }
.about { margin: 0 0 10px; font-size: 13.5px; line-height: 1.55; color: var(--fg); }
.form { margin: 0 0 14px; font-size: 12px; color: var(--fg3); }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 0 0 14px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.facts > div { background: var(--panel-strong); padding: 8px 10px; }
.facts dt { font-size: 10.5px; color: var(--fg3); letter-spacing: .02em; }
.facts dd { margin: 2px 0 0; font-size: 12.5px; font-variant-numeric: tabular-nums; }
.iso { font-weight: 600; }
.cfg { margin-bottom: 14px; }
.cfg code { display: block; margin: 5px 0 2px; font-family: var(--mono); font-size: 13px; }
.cfg .shells { font-family: var(--mono); font-size: 11px; color: var(--fg3); }
.uses { margin-bottom: 14px; }
.uses > div { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 6px; }
.uses span { padding: 4px 9px; border-radius: 999px; border: 1px solid var(--line2); font-size: 12px; color: var(--fg2); }
.disc p { margin: 4px 0 0; font-size: 12.5px; color: var(--fg2); }
.disc b { color: var(--fg); font-weight: 500; }

/* ------------------------------------------------------------------ projected labels */
.layer { position: absolute; inset: 0; pointer-events: none; z-index: 2; overflow: hidden; }
.pl { position: absolute; left: 0; top: 0; will-change: transform; white-space: nowrap; }
.pl.tick { font-family: var(--mono); font-size: 10.5px; color: var(--fg3); margin: -7px 0 0 0; transform-origin: right center; }
.pl.tick { translate: -100% 0; }
.pl.tick.right { translate: 6px 0; }
.pl.readout-pin {
  translate: -50% -100%; padding: 5px 10px; border-radius: 999px; font-size: 12px; font-variant-numeric: tabular-nums;
  background: var(--panel-strong); border: 1px solid var(--line2); box-shadow: var(--shadow); color: var(--fg);
}
.pl.readout-pin b { font-weight: 600; margin-right: 3px; }
.pl.readout-pin.dim { color: var(--fg2); background: var(--panel); }
.pl.readout-pin.dim span { color: var(--fg3); font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; margin-right: 4px; }

.tip {
  position: fixed; left: 0; top: 0; z-index: 9; pointer-events: none; opacity: 0; transition: opacity .15s;
  display: flex; align-items: baseline; gap: 7px; padding: 6px 11px; border-radius: 10px;
  background: var(--panel-strong); border: 1px solid var(--line2); box-shadow: var(--shadow); font-size: 12px; white-space: nowrap;
}
.tip.show { opacity: 1; }
.tip .tn { font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
.tip b { font-weight: 600; }
.tip .tname { color: var(--fg2); }
.tip .tv { margin-left: 6px; padding-left: 8px; border-left: 1px solid var(--line2); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------ palette / help / toast */
.palette, .helpbox {
  position: fixed; inset: 0; z-index: 20; display: flex; align-items: flex-start; justify-content: center; padding-top: 14vh;
  background: color-mix(in srgb, var(--bg) 35%, transparent); opacity: 0; pointer-events: none; transition: opacity .25s;
}
.palette.open, .helpbox.open { opacity: 1; pointer-events: auto; }
.pal { width: min(520px, calc(100% - 32px)); overflow: hidden; background: var(--panel-strong); }
.pal-in { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--fg3); }
.pal-in input { flex: 1; background: none; border: 0; outline: none; font: inherit; font-size: 16px; color: var(--fg); user-select: text; }
kbd { font-family: var(--mono); font-size: 10.5px; padding: 2px 6px; border-radius: 5px; border: 1px solid var(--line2); color: var(--fg2); }
.pal-list { max-height: 380px; overflow: auto; padding: 6px; }
.pr { display: grid; grid-template-columns: 34px 40px 1fr auto; align-items: center; width: 100%; padding: 8px 10px; border-radius: 9px; text-align: left; }
.pr.on, .pr:hover { background: var(--hover); }
.pr .pn { font-family: var(--mono); font-size: 11px; color: var(--fg3); }
.pr .ps { font-weight: 600; font-size: 15px; }
.pr .pnm { font-family: var(--serif); font-size: 18px; }
.pr .pc { display: flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--fg3); }
.pr .pc i { width: 7px; height: 7px; border-radius: 50%; }
.hb { width: min(460px, calc(100% - 32px)); padding: 14px 18px 18px; background: var(--panel-strong); }
.hb-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.hb dl { margin: 0; display: grid; grid-template-columns: 1fr; gap: 0; }
.hb dl > div { display: grid; grid-template-columns: 150px 1fr; align-items: center; padding: 7px 0; border-top: 1px solid var(--line); }
.hb dd { margin: 0; color: var(--fg2); }

.toast {
  position: absolute; left: 50%; top: 72px; transform: translate(-50%, -8px); z-index: 6;
  padding: 9px 16px; border-radius: 999px; background: var(--panel-strong); border: 1px solid var(--line2); box-shadow: var(--shadow);
  font-size: 13px; white-space: nowrap; opacity: 0 !important; pointer-events: none; transition: opacity .35s, transform .35s var(--ease);
}
.toast.show { opacity: 1 !important; transform: translate(-50%, 0); }
.toast .cap { display: inline; margin-right: 8px; }
.toast b { font-weight: 600; margin-right: 2px; }

/* ------------------------------------------------------------------ responsive */
@media (max-width: 1180px) {
  .dock { max-width: calc(100% - 300px); left: calc(50% + 126px); }
  .card { width: 316px; }
}
@media (max-width: 860px) {
  .top { grid-template-columns: 1fr auto auto; }
  .top .modes { padding: 0; background: none; border: 0; }
  .top .modes button[data-mode], .top .modes .msep { display: none; }
  .brand-t small { display: none; }
  .rail { top: auto; bottom: var(--gap); width: auto; right: var(--gap); max-height: 42vh; }
  .rail .lenses { grid-template-columns: repeat(3, 1fr); }
  .card { left: var(--gap); right: var(--gap); width: auto; top: 64px; max-height: 50vh; }
  .dock { left: 50%; bottom: calc(42vh + 28px); max-width: calc(100% - 32px); }
  .scrub { grid-template-columns: 1fr auto; }
  .scrub .track-wrap { grid-column: 1 / -1; grid-row: 2; }
}
sup { font-size: .68em; line-height: 0; position: relative; vertical-align: baseline; top: -.48em; font-feature-settings: 'tnum'; }
.hb-src { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); }
.hb-src p { margin: 6px 0 0; font-size: 11.5px; line-height: 1.5; color: var(--fg3); }
.hb-src .credit { margin-top: 8px; color: var(--fg2); letter-spacing: .02em; }

/* ------------------------------------------------------------------ exhibit title */
.exhibit {
  position: absolute; top: 78px; left: calc(50% + var(--vo, 0px)); transform: translateX(-50%); z-index: 3;
  text-align: center; pointer-events: none; transition: left .8s var(--ease);
}
.exhibit .cap { letter-spacing: .14em; }
.exhibit h1 { margin: 6px 0 0; font-family: var(--serif); font-weight: 400; font-size: 34px; line-height: 1.05; letter-spacing: -.005em; }
.exhibit .unit { display: inline-block; margin-top: 6px; font-family: var(--mono); font-size: 11px; color: var(--fg3); }
.ex-main > * { opacity: 0; transform: translateY(6px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.ex-main.in > * { opacity: 1; transform: none; }
.ex-main.in h1 { transition-delay: .06s; }
.ex-main.in .unit { transition-delay: .12s; }
#app .exhibit { opacity: 0; transition: opacity .9s var(--ease) .4s, left .8s var(--ease); }
#app.ready .exhibit { opacity: 1; }
@media (max-width: 860px) { .exhibit { display: none; } }
#app[data-env='showroom'] .exhibit { color: #f6f4f0; text-shadow: 0 2px 18px rgba(0,0,0,.55); }
#app[data-env='showroom'] .exhibit .cap, #app[data-env='showroom'] .exhibit .unit, #app[data-env='showroom'] .ex-ask { color: rgba(246,244,240,.72); }
#app[data-env='showroom'] .brand { color: #f6f4f0; text-shadow: 0 1px 12px rgba(0,0,0,.5); }
#app[data-env='showroom'] .brand .mark i { background: #f6f4f0; }
#app[data-env='showroom'] .brand-t small { color: rgba(246,244,240,.7); }

/* ------------------------------------------------------------------ atom mode */
.rail-body.atom { padding: 6px 6px 4px; }
.atom-panel { display: flex; flex-direction: column; gap: 12px; }
.atom-panel .hint { min-height: 0; margin: -4px 2px 0; font-size: 12px; }
.atom-panel .opt .cap { margin: 0 2px 6px; }
.atom-panel .sep { padding-top: 12px; border-top: 1px solid var(--line); }
.subs { display: flex; flex-direction: column; gap: 3px; }
.srow { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.srow em { width: 14px; font-style: normal; font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
.sub { padding: 3px 8px; border-radius: 7px; font-family: var(--mono); font-size: 12px; color: var(--fg2); border: 1px solid var(--line); }
.sub:hover { color: var(--fg); background: var(--hover); }
.sub.on { background: var(--on-bg); color: var(--on-fg); border-color: transparent; }
.orbs { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.orbs button { padding: 3px 8px; border-radius: 7px; font-family: var(--mono); font-size: 11.5px; color: var(--fg2); background: var(--hover); }
.orbs button.on { background: var(--on-bg); color: var(--on-fg); }
.act { display: flex; align-items: center; gap: 9px; width: 100%; padding: 9px 11px; border-radius: 10px; background: var(--hover); color: var(--fg); font-weight: 500; text-align: left; transition: background .2s; }
.act:hover { background: color-mix(in srgb, var(--fg) 12%, transparent); }
.act.on { background: var(--on-bg); color: var(--on-fg); }
.act i { font-style: normal; width: 14px; text-align: center; font-size: 11px; }
.act.sm { width: auto; padding: 6px 10px; font-size: 12px; }
.act.ghost { background: none; border: 1px solid var(--line2); margin-top: 6px; width: 100%; }
.act[disabled] { opacity: .45; cursor: default; }
.act.ghost.on { background: var(--hover); color: var(--fg); border-color: var(--fg3); }
.act.ghost.toggle::before { content: ''; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--fg3); flex: none; }
.act.ghost.toggle.on::before { background: #62ccff; border-color: #62ccff; box-shadow: 0 0 8px #62ccff; }
.glowdot { width: 10px !important; height: 10px; border-radius: 50%; box-shadow: 0 0 10px currentColor; }
.btnrow { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.stable { font-size: 11.5px; color: var(--fg3); }
.nuc { margin: 0 2px 8px; font-size: 13px; color: var(--fg2); }
.nuc b { color: var(--fg); font-weight: 600; }
.isos { display: flex; flex-wrap: wrap; gap: 4px; }
.isochip { display: flex; flex-direction: column; align-items: flex-start; padding: 5px 8px; border-radius: 8px; border: 1px solid var(--line); min-width: 62px; }
.isochip b { font-weight: 600; font-size: 12.5px; }
.isochip span { font-family: var(--mono); font-size: 10px; color: var(--fg3); }
.isochip:hover { background: var(--hover); }
.isochip.on { border-color: var(--fg2); background: var(--hover); }
.note { margin: 0 2px; font-size: 11px; line-height: 1.45; color: var(--fg3); }
.note.warn { color: var(--fg2); padding: 8px 10px; border-radius: 8px; background: var(--hover); margin: -4px 0 0; }

.atom-dock { display: grid; grid-template-columns: auto auto minmax(220px, 300px); gap: 22px; align-items: end; padding: 14px 18px; border-radius: 18px; background: var(--panel); border: 1px solid var(--line); -webkit-backdrop-filter: blur(22px) saturate(1.25); backdrop-filter: blur(22px) saturate(1.25); box-shadow: var(--shadow); }
.cfgblock .cfg-big { margin-top: 4px; font-family: var(--mono); font-size: 17px; white-space: nowrap; }
.cfgblock .shells { display: flex; gap: 8px; margin-top: 6px; font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
.cfgblock .shells b { color: var(--fg2); font-weight: 500; }
.boxes { display: flex; gap: 8px; align-items: flex-end; max-width: 520px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
.bx { display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer; }
.bx .bl { font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
.bx.on .bl { color: var(--fg); }
.bx .bb { display: flex; }
.bx .b { width: 22px; height: 26px; border: 1px solid var(--line2); margin-left: -1px; display: grid; place-items: center; font-size: 13px; letter-spacing: -2px; color: var(--fg); transition: background .3s; }
.bx .b.f { background: color-mix(in srgb, var(--fg) 7%, transparent); }
.bx.core .bb b { display: grid; place-items: center; height: 26px; padding: 0 8px; border: 1px dashed var(--line2); border-radius: 4px; font-family: var(--mono); font-size: 11px; color: var(--fg2); font-weight: 500; }
.specblock .spec { position: relative; height: 34px; margin-top: 6px; border-radius: 6px; background: #050608; overflow: hidden; }
#app[data-theme='light'] .specblock .spec { background: #121317; }
.spec i { position: absolute; top: 0; bottom: 0; width: 2px; margin-left: -1px; transition: box-shadow .4s, transform .4s; }
.spec i.flash { animation: lineflash .9s ease-out; }
@keyframes lineflash { 0% { transform: scaleX(3.5); box-shadow: 0 0 16px 4px currentColor; filter: brightness(2.2); } 100% { transform: none; box-shadow: none; filter: none; } }
.spec .nolines { position: absolute; inset: 0; display: grid; place-items: center; font-size: 11px; color: rgba(255,255,255,.45); }
.specaxis { display: flex; justify-content: space-between; margin-top: 4px; font-family: var(--mono); font-size: 9.5px; color: var(--fg3); padding: 0 6%; }
.pl.atag { translate: 0 -50%; display: flex; align-items: center; gap: 7px; padding: 5px 10px 5px 8px; border-radius: 999px; font-size: 12px; background: var(--panel-strong); border: 1px solid var(--line2); color: var(--fg2); box-shadow: var(--shadow); }
.pl.atag b { color: var(--fg); font-weight: 600; }
.pl.atag.dim { background: var(--panel); }
.pl.atag .dot { width: 7px; height: 7px; border-radius: 50%; background: #9fc2ff; box-shadow: 0 0 8px #9fc2ff; }
.pl.atag .dot.red { background: #e0574a; box-shadow: 0 0 8px #e0574a; }
.pl.atag .dot.dim { background: var(--fg3); box-shadow: none; }
@media (max-width: 1180px) { .atom-dock { grid-template-columns: auto minmax(200px, 260px); } .atom-dock .boxes { display: none; } }
.ib.sm.on { background: var(--on-bg); color: var(--on-fg); }
.bx.compact .b { width: 16px; height: 22px; font-size: 11px; }
sub { font-size: .72em; line-height: 0; position: relative; vertical-align: baseline; bottom: -.2em; }
/* in the showroom the big screens carry the title; the question, the hint and the tour call stay */
#app[data-env='showroom'] .exhibit .ex-main { display: none; }
#app[data-env='showroom'] .exhibit { top: 70px; }

/* ------------------------------------------------------------------ matter lab */
.matter-panel .struct .sname { font-family: var(--serif); font-size: 21px; line-height: 1.1; letter-spacing: -.005em; margin: 2px 2px 6px; color: var(--fg); }
.matter-panel .sblurb { margin: 0 2px 9px; font-size: 12px; line-height: 1.5; color: var(--fg2); }
.matter-panel .sfacts { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin: 0 0 8px; }
.matter-panel .sfacts span { display: flex; flex-direction: column; gap: 1px; padding: 7px 9px; border-radius: 9px; background: var(--hover); font-size: 10.5px; line-height: 1.25; color: var(--fg3); }
.matter-panel .sfacts b { font-family: var(--mono); font-weight: 500; font-size: 14px; color: var(--fg); font-variant-numeric: tabular-nums; }
.matter-panel .struct .note { margin-bottom: 6px; }
.matter-panel .struct .act.ghost { margin-top: 2px; }
.matter-panel canvas.phase { display: block; width: 100%; height: 156px; border-radius: 10px; background: var(--hover); cursor: crosshair; touch-action: none; }
.phase-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 7px 2px 6px; }
.phase-foot .pread { font-family: var(--mono); font-size: 10.5px; color: var(--fg2); font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chip.sm { padding: 3px 9px; font-size: 11px; border: 1px solid var(--line2); }
.chip.sm.dim { opacity: .45; }
.matter-panel > .act.ghost { margin-top: -4px; }
.matter-dock { grid-template-columns: 132px minmax(360px, 520px) 178px auto; gap: 16px; }
.matter-dock .presets button.low { bottom: -14px; }
.matter-dock .presets button:first-child, .matter-dock .presets button:last-child { transform: translateX(-50%); }
.matter-dock .presets button[style^='left:0%'] { transform: none; }
.matter-dock.two .track-wrap { padding-bottom: 34px; }
.mstate { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.mstate b { display: flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 600; }
.mstate .dot { display: none; }
.mstate b::before { content: ''; width: 9px; height: 9px; border-radius: 50%; background: var(--dotc, var(--fg)); }
.mstate span { font-size: 11.5px; line-height: 1.35; color: var(--fg3); }
.pl.atag .dot.cell { background: #62ccff; box-shadow: 0 0 9px #62ccff; }
#app[data-theme='light'] .pl.atag .dot.cell { background: #1479d4; box-shadow: none; }
@media (max-width: 1440px) { .matter-dock { grid-template-columns: 112px minmax(240px, 380px) 132px auto; gap: 14px; } .matter-dock .readout b { font-size: 28px; } .mstate span { font-size: 11px; } }
@media (max-width: 1180px) { .matter-dock { grid-template-columns: 112px minmax(220px, 340px) auto; } .matter-dock .mstate { display: none; } }

/* magnifier lens (the image inside is drawn by WebGL; this is the frame and handle) */
.lensring {
  position: absolute; left: 0; top: 0; width: 300px; height: 300px; border-radius: 50%; z-index: 2;
  opacity: 0; pointer-events: none; transition: opacity .5s var(--ease); cursor: grab; touch-action: none;
  box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.55), inset 0 0 0 7px rgba(18,20,24,.55), inset 0 0 0 8px rgba(255,255,255,.22), 0 22px 60px rgba(0,0,0,.45);
}
.lensring.show { opacity: 1; pointer-events: auto; }
.lensring.drag { cursor: grabbing; }
.lensring .lens-tag {
  position: absolute; left: 50%; top: 14px; transform: translateX(-50%); padding: 3px 9px; border-radius: 999px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .02em; white-space: nowrap; color: #f2f3f5; background: rgba(10,11,14,.55);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.lensring .lens-handle {
  position: absolute; width: 22px; height: 92px; right: -2px; bottom: -66px; border-radius: 11px; transform-origin: 50% 0; transform: rotate(-45deg) translate(0, 0);
  background: linear-gradient(90deg, #2a2d33, #4a4e57 45%, #22252a); box-shadow: 0 10px 24px rgba(0,0,0,.35); pointer-events: auto;
}
#app[data-theme='light'] .lensring { box-shadow: inset 0 0 0 1.5px rgba(0,0,0,.35), inset 0 0 0 7px rgba(240,240,236,.7), inset 0 0 0 8px rgba(0,0,0,.18), 0 22px 60px rgba(40,34,20,.22); }
#app[data-mode='atom'] .toast, #app[data-mode='matter'] .toast { top: 168px; }
#app[data-env='showroom'][data-mode] .toast { top: 72px; }

/* ------------------------------------------------------------------ experiments */
.lab-panel .lsets { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.lset { display: flex; align-items: center; gap: 8px; padding: 8px 9px; border-radius: 10px; color: var(--fg2); font-size: 11.5px; font-weight: 500; line-height: 1.2; text-align: left; transition: background .2s, color .2s; }
.lset svg { width: 17px; height: 17px; flex: none; }
.lset:hover { background: var(--hover); color: var(--fg); }
.lset.on { background: var(--on-bg); color: var(--on-fg); }
.lexps { display: flex; flex-direction: column; gap: 2px; }
.lexp { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; border-radius: 10px; text-align: left; transition: background .2s; border: 1px solid transparent; }
.lexp b { font-weight: 600; font-size: 13px; color: var(--fg); }
.lexp span { font-size: 11.5px; line-height: 1.35; color: var(--fg3); }
.lexp:hover { background: var(--hover); }
.lexp.on { background: var(--hover); border-color: var(--line2); }
.lexp.on b::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #ffb46e; box-shadow: 0 0 8px #ffb46e; margin: 0 7px 1px 0; }
.lab-panel .lctl { display: flex; flex-direction: column; gap: 10px; }
.echips { display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; }
.echip { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 6px 0 5px; border-radius: 9px; background: var(--hover); border: 1px solid transparent; transition: background .2s, border-color .2s; }
.echip i { width: 6px; height: 6px; border-radius: 50%; }
.echip b { font-weight: 600; font-size: 13px; }
.echip:hover { border-color: var(--line2); }
.echip.on { background: var(--on-bg); color: var(--on-fg); }
.lab-panel .why { margin: 0 2px; font-size: 12.5px; line-height: 1.55; color: var(--fg2); }
.lab-panel .note.warn { margin-top: 10px; }
.lab-panel .rv { font-style: normal; float: right; color: var(--fg2); font-family: var(--mono); letter-spacing: 0; }
.range.lrange { --track-bg: linear-gradient(90deg, var(--fg2) 0%, var(--fg2) calc(var(--u) * 100%), var(--track) calc(var(--u) * 100%)); }
.lab-dock { display: grid; grid-template-columns: auto minmax(280px, 520px) auto; grid-template-rows: auto auto; column-gap: 16px; row-gap: 8px; align-items: center; padding: 14px 16px 14px 20px; border-radius: 18px; background: var(--panel); border: 1px solid var(--line); -webkit-backdrop-filter: blur(22px) saturate(1.25); backdrop-filter: blur(22px) saturate(1.25); box-shadow: var(--shadow); }
.lab-dock .ldots { display: flex; gap: 5px; grid-row: 1 / span 2; }
.lab-dock .ldots i { width: 7px; height: 7px; border-radius: 50%; background: var(--track); transition: background .3s, transform .3s; }
.lab-dock .ldots i.past { background: var(--fg3); }
.lab-dock .ldots i.on { background: #ffb46e; box-shadow: 0 0 9px #ffb46e; transform: scale(1.25); }
.lab-dock .lcap { min-height: 40px; display: flex; flex-direction: column; justify-content: center; gap: 3px; }
.lab-dock .lcap p { margin: 0; font-size: 15px; line-height: 1.35; color: var(--fg); animation: capIn .5s var(--ease); }
.lab-dock .lread { font-family: var(--mono); font-size: 11px; color: var(--fg3); }
.lab-dock .lread:empty { display: none; }
.lab-dock .lprog { grid-column: 2; grid-row: 2; height: 2px; border-radius: 1px; background: var(--track); overflow: hidden; }
.lab-dock .lprog i { display: block; height: 100%; background: var(--fg2); transform-origin: 0 50%; }
.lab-dock .play { grid-column: 3; grid-row: 1 / span 2; }
@keyframes capIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
.labs { margin-top: 14px; }
.labs > div { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 7px; }
.lchip { padding: 5px 10px; border-radius: 999px; font-size: 12px; color: var(--fg2); border: 1px solid var(--line2); transition: background .2s, color .2s; }
.lchip:hover { background: var(--hover); color: var(--fg); }
.lchip.on { background: var(--on-bg); color: var(--on-fg); border-color: transparent; }
.lchip::before { content: '⚗ '; opacity: .6; }
.lspec { position: relative; height: 26px; margin-top: 2px; border-radius: 6px; background: #050608; overflow: hidden; }
#app[data-theme='light'] .lspec { background: #121317; }
.lab-panel .specaxis { margin-top: 3px; }
.pl.atag.sm { padding: 3px 8px; font-size: 11px; }
.lread .spark { vertical-align: middle; margin-right: 6px; color: #ffb46e; }

/* the lab stage stays dark in both themes (flames and glows need a dark room): keep floating titles legible */
#app[data-theme="light"][data-mode="lab"] .brand,
#app[data-theme="light"][data-mode="lab"] .exhibit { color: #f1efea; --fg: #f1efea; --fg3: rgba(241, 239, 234, .55); --fg2: rgba(241, 239, 234, .72); }

/* ------------------------------------------------------------------ checkpoint 5: presentation, capture, kiosk */
.tools .tsep { width: 1px; height: 18px; background: var(--line2); margin: 0 2px; }
.ib.off { color: var(--fg3); }
@media (max-width: 1320px) { .tools .ib { width: 33px; height: 33px; } .tools .seg.envs button { padding: 6px 9px; } .tools { gap: 5px; } }
@media (max-width: 1200px) { .tools .k-opt, .tools .tsep { display: none; } }

/* chrome fades away in cinematic / tour / intro / attract */
#app .top, #app .rail, #app .layer { transition: opacity .7s var(--ease); }
#app .exhibit { transition: left .8s var(--ease), opacity .7s var(--ease); }
#app.present .top, #app.present .rail, #app.present .card, #app.present .dock, #app.present .exhibit, #app.present .layer, #app.present .lensring, #app.present .tip, #app.present .palette, #app.present .helpbox { opacity: 0 !important; pointer-events: none !important; }
#app.present .top *, #app.present .rail *, #app.present .card *, #app.present .dock * { pointer-events: none !important; }
#app.present .toast { opacity: 0 !important; }
#app.present { cursor: default; }
#app.nocursor, #app.nocursor * { cursor: none !important; }

/* caption (tours): always light text on a dark glass plate, in both themes and over any scene */
.cine-cap {
  position: absolute; left: 50%; bottom: clamp(24px, 5.5vh, 60px); transform: translate(-50%, 10px); z-index: 8;
  width: max-content; max-width: min(860px, calc(100% - 32px)); box-sizing: border-box;
  padding: 14px clamp(18px, 2.4vw, 34px) 13px; border-radius: 16px; text-align: center; pointer-events: none; opacity: 0;
  background: rgba(7, 9, 13, 0.74); border: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  -webkit-backdrop-filter: blur(16px) saturate(1.1); backdrop-filter: blur(16px) saturate(1.1);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  color: #f3f2ef;
}
.cine-cap.show { opacity: 1; transform: translate(-50%, 0); transition-delay: .25s; }
.cine-cap .k { color: #a7abb4; letter-spacing: .16em; }
.cine-cap .t { margin: 8px 0 12px; font-family: var(--serif); font-size: clamp(21px, 2.2vw, 32px); line-height: 1.2; letter-spacing: -.003em; text-wrap: balance; }
.cine-cap .cc-foot { display: flex; align-items: center; justify-content: center; gap: 14px; }
.cc-dots { display: flex; gap: 6px; }
.cc-dots i { width: 5px; height: 5px; border-radius: 50%; background: #6d717a; opacity: .7; transition: background .4s, opacity .4s, transform .4s; }
.cc-dots i.past { opacity: .9; background: #a7abb4; }
.cc-dots i.on { opacity: 1; background: #f3f2ef; transform: scale(1.3); }
.cc-bar { display: block; width: 120px; height: 2px; border-radius: 2px; background: rgba(255, 255, 255, 0.14); overflow: hidden; }
.cc-bar b { display: block; height: 100%; background: #c9ccd2; transform-origin: 0 50%; transform: scaleX(0); }
@media (max-width: 640px) { .cine-cap { padding: 11px 16px 10px; border-radius: 12px; } .cine-cap .t { font-size: 19px; } }

/* hint pill (top centre) */
.cine-hint, .touch-prompt {
  position: absolute; left: 50%; top: 22px; transform: translate(-50%, -8px); z-index: 9;
  padding: 8px 16px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
  font-size: 12.5px; color: var(--fg2); white-space: nowrap; pointer-events: none; opacity: 0;
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.cine-hint.show { opacity: 1; transform: translate(-50%, 0); }
.touch-prompt { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--fg); padding: 10px 20px 10px 14px; top: 26px; }
.touch-prompt.show { opacity: 1; transform: translate(-50%, 0); }
.touch-prompt i { position: relative; width: 10px; height: 10px; border-radius: 50%; background: var(--fg); }
.touch-prompt i::after { content: ''; position: absolute; inset: -6px; border-radius: 50%; border: 1.5px solid var(--fg); animation: touchPulse 2.2s var(--ease) infinite; }
@keyframes touchPulse { 0% { transform: scale(.4); opacity: .9; } 100% { transform: scale(1.9); opacity: 0; } }

/* intro title card */
.intro-card {
  position: absolute; inset: 0; z-index: 9; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; pointer-events: none; opacity: 0; transition: opacity 1.4s var(--ease);
  color: var(--fg);
}
.intro-card.show { opacity: 1; }
.intro-card .cap { letter-spacing: .32em; color: var(--fg2); font-size: 11.5px; transform: translateY(8px); transition: transform 2.4s var(--ease); }
.intro-card h1 { margin: 14px 0 0; font-family: var(--serif); font-weight: 400; font-size: clamp(64px, 10vw, 148px); line-height: .95; letter-spacing: .01em; transform: scale(.985); filter: blur(6px); transition: transform 3.2s var(--ease), filter 1.8s var(--ease), letter-spacing 3.2s var(--ease); text-shadow: 0 2px 40px color-mix(in srgb, var(--bg) 70%, transparent); }
.intro-card .rule { display: block; width: 0; height: 1px; margin: 26px 0 16px; background: var(--fg3); transition: width 2.2s var(--ease) .5s; }
.intro-card .credit { font-size: 11.5px; letter-spacing: .14em; color: var(--fg3); opacity: 0; transition: opacity 1.6s var(--ease) 1s; }
.intro-card.show .cap { transform: none; }
.intro-card.show h1 { transform: none; filter: none; letter-spacing: -.005em; }
.intro-card.show .rule { width: 72px; }
.intro-card.show .credit { opacity: 1; }

/* record pill */
.rec-pill {
  position: absolute; left: 50%; top: 72px; transform: translate(-50%, -8px); z-index: 9;
  display: flex; align-items: center; gap: 10px; padding: 6px 6px 6px 14px; border-radius: 999px;
  background: var(--panel-strong); border: 1px solid var(--line2); box-shadow: var(--shadow); font-size: 12.5px;
  opacity: 0; pointer-events: none; transition: opacity .35s, transform .35s var(--ease);
}
.rec-pill.show { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.rec-pill .dot { width: 9px; height: 9px; border-radius: 50%; background: #ff4b3e; box-shadow: 0 0 10px #ff4b3e; animation: recBlink 1.2s steps(2) infinite; }
.rec-pill b { font-family: var(--mono); font-weight: 500; }
.rec-pill span { color: var(--fg3); font-family: var(--mono); font-size: 11px; }
.rec-pill button { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: var(--hover); }
.rec-pill button svg { width: 12px; height: 12px; }
@keyframes recBlink { 50% { opacity: .25; } }
#app.present .rec-pill { top: 22px; }

/* offline render progress */
.render-ov { position: absolute; inset: 0; z-index: 20; display: none; place-items: center; background: color-mix(in srgb, var(--bg) 55%, transparent); }
.render-ov.show { display: grid; }
.render-ov .ro { width: min(380px, calc(100% - 32px)); padding: 20px 22px 18px; background: var(--panel-strong); text-align: left; }
.render-ov h3 { margin: 6px 0 14px; font-family: var(--serif); font-weight: 400; font-size: 30px; }
.ro-bar { display: block; height: 3px; border-radius: 3px; background: var(--track); overflow: hidden; }
.ro-bar b { display: block; height: 100%; background: var(--fg); transform-origin: 0 50%; transform: scaleX(0); }
.ro-n { margin: 10px 0 4px; font-family: var(--mono); font-size: 11.5px; color: var(--fg2); }

/* top-bar menus */
.pop {
  position: absolute; left: 0; top: 0; z-index: 12; width: 344px; padding: 8px; background: var(--panel-strong);
  display: none; opacity: 0;
}
.pop.open { display: block; animation: popIn .22s var(--ease) forwards; }
@keyframes popIn { from { opacity: 0; margin-top: -6px; } to { opacity: 1; margin-top: 0; } }
.pop .mcap { padding: 12px 10px 5px; }
.mi { display: grid; grid-template-columns: 20px 1fr auto; align-items: center; gap: 11px; width: 100%; padding: 9px 10px; border-radius: 10px; text-align: left; color: var(--fg); transition: background .2s; }
.mi:hover { background: var(--hover); }
.mi svg { width: 18px; height: 18px; color: var(--fg2); }
.mi b { display: block; font-weight: 500; font-size: 13.5px; }
.mi em { display: block; font-style: normal; color: var(--fg3); font-size: 12px; margin-top: 2px; line-height: 1.35; }
.mi em.dur { font-family: var(--mono); font-size: 11px; margin: 0; }
.mi.big { padding: 11px 10px; background: var(--hover); }
.mi.big:hover { background: color-mix(in srgb, var(--fg) 11%, transparent); }
.menu-capture { width: 372px; padding: 4px 6px 6px; }
.msec { padding: 10px 8px 10px; }
.msec + .msec { border-top: 1px solid var(--line); }
.msec .seg.sm { flex-wrap: wrap; }
.msec .act { margin-top: 10px; }
.msec .act kbd { margin-left: auto; }
.msec .act svg { width: 16px; height: 16px; }
.msec .act.rec-on { background: #ff4b3e; color: #fff; }
.mrow { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 8px 0 0; }
.mrow:first-child { margin-top: 0; margin-bottom: 8px; }
.mrow .cap.dim { color: var(--fg3); }
.mnote { margin: 8px 0 0; font-size: 12px; line-height: 1.45; color: var(--fg3); }
.mnote.warn { color: #ffb46e; }
.mtours { display: flex; flex-wrap: wrap; gap: 4px; }
.mtours .chip { border: 1px solid var(--line2); }
.mtours .chip em { font-style: normal; font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
#app.recording .toast { top: 116px; }

/* kiosk: fewer tools, no selection */
#app.kiosk .k-hide { display: none !important; }
#app.kiosk { -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
.hb-src .cap + p { margin-top: 4px; }

/* ------------------------------------------------------------------ slim lens rail + property drop-down */
.rail.slim { width: 56px; padding: 6px; overflow: visible; }
.rail.slim .lenses { grid-template-columns: 1fr; gap: 4px; padding-bottom: 6px; }
.rail.slim .lens { position: relative; width: 44px; height: 44px; padding: 0; justify-content: center; border-radius: 11px; }
.rail.slim .lens svg { width: 19px; height: 19px; opacity: .9; }
.rail.slim .lens::after {
  content: attr(data-tip); position: absolute; left: calc(100% + 12px); top: 50%; transform: translate(-4px, -50%);
  padding: 6px 10px; border-radius: 8px; background: var(--panel-strong); border: 1px solid var(--line2); box-shadow: var(--shadow);
  color: var(--fg); font-size: 12px; font-weight: 500; white-space: nowrap; pointer-events: none; opacity: 0; transition: opacity .18s, transform .18s var(--ease); z-index: 6;
}
.rail.slim .lens:hover::after { opacity: 1; transform: translate(0, -50%); }
.rail.slim .rail-x { margin-top: 6px; color: var(--fg3); }
.rail.slim .rail-x:hover { color: var(--fg); }
.rail-collapse { display: flex; align-items: center; gap: 8px; width: 100%; margin-top: 8px; padding: 9px 9px 3px; border-top: 1px solid var(--line); color: var(--fg3); font-size: 12px; }
.rail-collapse:hover { color: var(--fg); }
.rail-collapse svg { width: 16px; height: 16px; }
@media (max-width: 860px) {
  .rail.slim { right: auto; width: auto; }
  .rail.slim .lenses { grid-auto-flow: column; grid-template-columns: none; padding: 0 6px 0 0; border-bottom: 0; border-right: 1px solid var(--line); }
  .rail.slim { display: flex; align-items: center; gap: 6px; }
  .rail.slim .rail-x { margin: 0; }
  .rail.slim .lens::after { display: none; }
}
.pdrop {
  position: absolute; left: 0; top: 0; z-index: 11; width: 268px; padding: 10px 8px 12px; background: var(--panel-strong);
  display: none; overflow: auto; scrollbar-width: thin;
}
.pdrop.open { display: block; animation: popIn .22s var(--ease) forwards; }
.pdrop .pd-head { padding: 2px 8px 10px; color: var(--fg2); }

/* ------------------------------------------------------------------ exhibit: picker, question, hint */
.ex-pick { pointer-events: auto; display: inline-flex; align-items: center; gap: 6px; padding: 0 6px 2px 10px; margin: 0 -6px 0 0; border-radius: 12px; font: inherit; color: inherit; transition: background .2s; }
.ex-pick svg { width: 22px; height: 22px; opacity: .5; transition: opacity .2s, transform .2s var(--ease); }
.ex-pick:hover { background: var(--hover); }
.ex-pick:hover svg { opacity: 1; transform: translateY(1px); }
.ex-ask {
  margin: 10px 0 0; font-family: var(--serif); font-style: italic; font-size: 19px; line-height: 1.25; color: var(--fg2);
  opacity: 0; transform: translateY(5px); transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.ex-ask.show { opacity: 1; transform: none; transition-delay: .35s; }
.ex-try {
  display: inline-flex; align-items: center; gap: 10px; max-width: min(620px, 72vw); margin-top: 12px; padding: 7px 7px 7px 14px;
  border-radius: 999px; background: var(--panel-strong); border: 1px solid var(--line2); box-shadow: var(--shadow);
  font-size: 13px; line-height: 1.35; color: var(--fg); text-align: left;
  opacity: 0; transform: translateY(6px); pointer-events: none; transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.ex-try.show { opacity: 1; transform: none; pointer-events: auto; }
.ex-try .cap { display: inline; flex: none; color: #ffb46e; letter-spacing: .12em; }
.ex-try .ib.sm { width: 26px; height: 26px; flex: none; }
.ex-try .ib.sm svg { width: 13px; height: 13px; }
#app[data-theme='light'] .ex-try .cap { color: #c46a1c; }

/* ------------------------------------------------------------------ design credit */
.credit-corner {
  position: absolute; right: 20px; bottom: 15px; z-index: 5;
  font-size: 10.5px; font-weight: 500; letter-spacing: .2em; text-transform: uppercase; text-decoration: none;
  color: var(--fg3); transition: color .2s, opacity .6s;
}
a.credit-corner:hover { color: var(--fg); }
#app[data-env='showroom'] .credit-corner { color: rgba(246,244,240,.62); text-shadow: 0 1px 10px rgba(0,0,0,.5); }
#app[data-present~='intro'] .credit-corner { opacity: 0; }
@media (max-width: 860px) { .credit-corner { display: none; } }
#app[data-theme="light"][data-mode="lab"] .ex-try { --fg: #15161a; color: #15161a; }
#app[data-theme="light"][data-mode="lab"] .credit-corner { color: rgba(241, 239, 234, .55); }
/* labels stay visible during tours (they carry the story), not in the pure cinematic mode */
#app.present[data-present~="tour"] .layer { opacity: 1 !important; }
.menu-present { max-height: calc(100% - 90px); overflow: auto; scrollbar-width: thin; }
.mstories { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.mi.sm { grid-template-columns: 1fr auto; padding: 8px 10px; gap: 6px; }
.mi.sm b { font-size: 12.5px; line-height: 1.25; }
.menu-present { width: 420px; }

/* ------------------------------------------------------------------ tours: tab, call, gallery, end card, links */
.modes .msep { align-self: center; width: 1px; height: 18px; margin: 0 5px; background: var(--line2); }
.modes .tours-tab { display: inline-flex; align-items: center; gap: 7px; padding-left: 12px; color: #ffcf9e; background: rgba(255, 180, 110, .1); }
.modes .tours-tab svg { width: 11px; height: 11px; }
.modes .tours-tab:hover { color: #ffe2c4; background: rgba(255, 180, 110, .2); }
.modes .tours-tab.on { background: #ffb46e; color: #1a1006; }
#app[data-theme='light'] .modes .tours-tab { color: #a24f0f; background: rgba(196, 106, 28, .1); }
#app[data-theme='light'] .modes .tours-tab:hover { background: rgba(196, 106, 28, .18); }
#app[data-theme='light'] .modes .tours-tab.on { background: #c46a1c; color: #fff; }

.ex-tour {
  display: none; align-items: center; gap: 10px; width: fit-content; margin: 14px auto 0; padding: 9px 16px 9px 9px; border-radius: 999px;
  background: #ffb46e; color: #1a1006; font-weight: 600; font-size: 13.5px; letter-spacing: 0; box-shadow: 0 12px 34px rgba(255, 150, 70, .22);
  pointer-events: auto; transition: background .2s, transform .2s var(--ease);
}
.ex-tour.show { display: flex; animation: exTourIn .8s var(--ease) both; }
.ex-tour:hover { background: #ffc58b; transform: translateY(-1px); }
.ex-tour svg { width: 26px; height: 26px; padding: 7px 6px 7px 8px; border-radius: 50%; background: rgba(26, 16, 6, .12); }
.ex-tour em { font-style: normal; font-weight: 500; font-size: 12px; opacity: .6; }
@keyframes exTourIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
#app[data-theme='light'] .ex-tour { background: #c46a1c; color: #fff; box-shadow: 0 12px 30px rgba(160, 80, 20, .2); }
#app[data-theme='light'] .ex-tour svg { background: rgba(255, 255, 255, .18); }
#app[data-theme='light'] .ex-tour:hover { background: #d27a2c; }

.touch-prompt .tp-sep { width: 1px; height: 18px; margin: 0 4px; background: var(--line2); }
.touch-prompt .tp-tour { pointer-events: auto; display: inline-flex; align-items: center; gap: 7px; margin: -5px -14px -5px 0; padding: 7px 14px 7px 11px; border-radius: 999px; background: #ffb46e; color: #1a1006; font-weight: 600; font-size: 13px; }
.touch-prompt .tp-tour svg { width: 11px; height: 11px; }
#app[data-theme='light'] .touch-prompt .tp-tour { background: #c46a1c; color: #fff; }

.tourgal {
  position: absolute; inset: 0; z-index: 6; opacity: 0; pointer-events: none; transition: opacity .5s var(--ease);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: blur(24px) saturate(1.1); backdrop-filter: blur(24px) saturate(1.1);
}
.tourgal.open { opacity: 1; pointer-events: auto; }
#app.tg-open .top { z-index: 8; }
#app.tg-open .rail, #app.tg-open .card, #app.tg-open .dock, #app.tg-open .exhibit, #app.tg-open .layer, #app.tg-open .tip, #app.tg-open .lensring { opacity: 0 !important; pointer-events: none !important; }
.tg-scroll { position: absolute; inset: 0; overflow-y: auto; padding: 86px clamp(16px, 4vw, 56px) 64px; -webkit-mask-image: linear-gradient(180deg, transparent 0, transparent 60px, #000 92px); mask-image: linear-gradient(180deg, transparent 0, transparent 60px, #000 92px); }
.tg-in { max-width: 1320px; margin: 0 auto; }
.tg-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; }
.tg-head .cap { color: var(--fg2); letter-spacing: .16em; }
.tg-head h1 { margin: 8px 0 10px; font-family: var(--serif); font-weight: 400; font-size: clamp(34px, 3.6vw, 54px); line-height: 1.02; letter-spacing: -.01em; }
.tg-head p { margin: 0; max-width: 640px; font-size: 14px; line-height: 1.5; color: var(--fg2); }
.tg-sec { margin-top: 34px; }
.tg-sec h2 { margin: 0 0 12px; font-weight: 500; letter-spacing: .16em; color: var(--fg2); }
.tg-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.tg-card {
  display: flex; flex-direction: column; text-align: left; overflow: hidden; border-radius: 14px;
  background: var(--panel-strong); border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: transform .35s var(--ease), border-color .25s, box-shadow .35s var(--ease);
}
.tourgal .tg-card { animation: tgIn .7s var(--ease) both; }
.tourgal .tg-sec:nth-of-type(2) .tg-card { animation-delay: .06s; }
.tourgal .tg-sec:nth-of-type(3) .tg-card { animation-delay: .12s; }
@keyframes tgIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.tg-card:hover, .tg-card:focus-visible { transform: translateY(-3px); border-color: var(--line2); outline: none; }
.tg-card:focus-visible { box-shadow: 0 0 0 2px #ffb46e, var(--shadow); }
.tg-poster { position: relative; display: block; aspect-ratio: 16 / 9; background-color: #0e1014; background-size: cover; background-position: center; transition: background-size .6s var(--ease); }
.tg-poster::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 52%, rgba(0, 0, 0, .5)); }
.tg-play { position: absolute; left: 12px; bottom: 10px; z-index: 1; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: rgba(255, 255, 255, .9); color: #0b0c0e; transform: scale(.88); transition: transform .3s var(--ease), background .2s; }
.tg-play svg { width: 13px; height: 13px; margin-left: 2px; }
.tg-card:hover .tg-play, .tg-card:focus-visible .tg-play { transform: scale(1); background: #ffb46e; }
.tg-dur { position: absolute; right: 10px; bottom: 12px; z-index: 1; padding: 2px 8px; border-radius: 999px; background: rgba(0, 0, 0, .5); color: #fff; font-family: var(--mono); font-style: normal; font-size: 11px; }
.tg-body { display: flex; flex-direction: column; gap: 4px; padding: 12px 14px 15px; }
.tg-body b { font-family: var(--serif); font-weight: 400; font-size: 21px; line-height: 1.12; }
.tg-body span { font-size: 12.5px; line-height: 1.4; color: var(--fg2); }
@media (max-width: 640px) { .tg-grid { grid-template-columns: 1fr 1fr; gap: 10px; } .tg-body b { font-size: 17px; } .tg-body span { display: none; } .tg-scroll { padding-top: 76px; } }

.tour-end { position: absolute; left: 50%; bottom: clamp(24px, 6vh, 64px); z-index: 9; transform: translate(-50%, 14px); opacity: 0; pointer-events: none; transition: opacity .6s var(--ease), transform .6s var(--ease); }
.tour-end.open { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.te-in {
  position: relative; overflow: hidden; width: min(640px, calc(100vw - 32px)); padding: 18px 20px 18px; border-radius: 18px; text-align: center;
  background: rgba(7, 9, 13, .84); border: 1px solid rgba(255, 255, 255, .08); color: #f3f2ef; box-shadow: 0 24px 60px rgba(0, 0, 0, .4);
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
}
.te-in > .cap { color: #a7abb4; letter-spacing: .14em; }
.te-in h2 { margin: 4px 0 14px; font-family: var(--serif); font-weight: 400; font-size: 30px; line-height: 1.1; }
.te-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; text-align: left; }
.te-cards .tg-card { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .08); color: #f3f2ef; box-shadow: none; }
.te-cards .tg-body b { font-size: 18px; }
.te-cards .tg-body span { color: rgba(243, 242, 239, .62); }
.te-acts { display: flex; justify-content: center; gap: 8px; margin-top: 12px; }
.te-acts .act.ghost { width: auto; margin: 0; padding: 8px 14px; color: #f3f2ef; border-color: rgba(255, 255, 255, .16); }
.te-acts .act.ghost:hover { background: rgba(255, 255, 255, .08); }
.te-acts .act svg { width: 15px; height: 15px; }
.te-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: rgba(255, 255, 255, .06); }
.te-bar b { display: block; height: 100%; background: rgba(255, 180, 110, .7); transform-origin: 0 50%; }
.tour-end.open .te-bar b { animation: teBar 20s linear both; }
@keyframes teBar { from { transform: scaleX(1); } to { transform: scaleX(0); } }

.lchip.tchip { display: inline-flex; align-items: center; gap: 6px; }
.lchip.tchip svg { width: 9px; height: 9px; color: #ffb46e; }
#app[data-theme='light'] .lchip.tchip svg { color: #c46a1c; }
.lchip.tchip em { font-style: normal; font-family: var(--mono); font-size: 10.5px; color: var(--fg3); }
.tours-in .tchips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 7px; }
.pl.atag.out { border-color: rgba(224, 87, 63, .55); }
.pl.atag.out b { color: #ff8a70; }
.msel { width: 100%; margin-top: 4px; padding: 8px 10px; border-radius: 10px; background: var(--hover); border: 1px solid var(--line); color: var(--fg); font: inherit; }

/* ------------------------------------------------------------------ intro reel captions and the welcome card */
.cine-cap.reel .k { color: #c9a77a; letter-spacing: .2em; }
.cine-cap.reel .t { font-size: clamp(24px, 2.7vw, 40px); margin: 8px 0 12px; }
.cine-cap.reel .cc-dots { display: none; }
#app.present[data-present~="reel"] .layer { opacity: 1 !important; }

.welcome { position: absolute; inset: 0; z-index: 9; display: flex; align-items: flex-end; justify-content: center; padding-bottom: clamp(28px, 9vh, 110px); pointer-events: none; opacity: 0; transition: opacity .9s var(--ease); }
.welcome.open { opacity: 1; }
.welcome.open .wc-in { pointer-events: auto; transform: none; }
.wc-in {
  position: relative; overflow: hidden; width: min(760px, calc(100vw - 32px)); padding: 22px 24px 20px; border-radius: 20px; text-align: center;
  background: rgba(7, 9, 13, .82); border: 1px solid rgba(255, 255, 255, .08); color: #f3f2ef; box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  transform: translateY(16px); transition: transform 1s var(--ease);
}
.wc-in > .cap { color: #c9a77a; letter-spacing: .18em; }
.wc-in h2 { margin: 6px 0 18px; font-family: var(--serif); font-weight: 400; font-size: clamp(30px, 3.2vw, 46px); line-height: 1.05; letter-spacing: -.01em; }
.wc-acts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.wc-btn {
  display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: 14px; text-align: left;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1); color: #f3f2ef;
  transition: background .2s, transform .25s var(--ease), border-color .2s;
}
.wc-btn:hover, .wc-btn:focus-visible { background: rgba(255, 255, 255, .09); transform: translateY(-2px); outline: none; border-color: rgba(255, 255, 255, .2); }
.wc-btn i { flex: none; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: rgba(255, 255, 255, .1); }
.wc-btn i svg { width: 17px; height: 17px; }
.wc-btn span { display: flex; flex-direction: column; gap: 3px; }
.wc-btn b { font-size: 16px; font-weight: 600; letter-spacing: -.005em; }
.wc-btn em { font-style: normal; font-size: 12.5px; line-height: 1.35; color: rgba(243, 242, 239, .62); }
.wc-btn.primary { background: #ffb46e; border-color: #ffb46e; color: #1a1006; }
.wc-btn.primary:hover, .wc-btn.primary:focus-visible { background: #ffc58b; border-color: #ffc58b; }
.wc-btn.primary i { background: rgba(26, 16, 6, .12); }
.wc-btn.primary i svg { margin-left: 2px; }
.wc-btn.primary em { color: rgba(26, 16, 6, .66); }
.wc-note { margin: 14px 0 0; font-size: 12px; color: rgba(243, 242, 239, .5); }
.welcome.open .te-bar b { animation: teBar 30s linear both; }
@media (max-width: 640px) { .wc-acts { grid-template-columns: 1fr; } }

/* skip intro */
.skip-intro {
  position: absolute; right: 20px; top: 20px; z-index: 10; display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 12px 9px 16px; border-radius: 999px; font-size: 13px; font-weight: 500; letter-spacing: .01em;
  background: rgba(7, 9, 13, .62); border: 1px solid rgba(255, 255, 255, .14); color: #f3f2ef;
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  opacity: 0; pointer-events: none; transform: translateY(-6px); transition: opacity .6s var(--ease), transform .6s var(--ease), background .2s;
}
.skip-intro.show { opacity: 1; pointer-events: auto; transform: none; transition-delay: .8s; }
.skip-intro:hover { background: rgba(7, 9, 13, .85); border-color: rgba(255, 255, 255, .3); }
.skip-intro svg { width: 15px; height: 15px; }