:root {
  --bg: #0b0d10;
  --bg2: #111419;
  --surface: #161a20;
  --surface2: #1d222a;
  --line: #2a313b;
  --text: #e9eef3;
  --muted: #9aa6b2;
  --faint: #6b7682;
  --accent: #7fb2cf;
  --accent-ink: #06141c;
  --wall: #6f95ab;
  --A: #7fa7c9; --B: #8fbf8a; --C: #d98c6a; --D: #b49be0; --E: #e6c065;
  --radius: 16px;
  --tabs-h: 62px;
  --mini-h: 0px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Charter", "Georgia", ui-serif, serif;
  color-scheme: dark;
}
html { font-size: 16px; }   /* the baseline; the text-size setting scales it */
/* Safety net against a stray wide child. NOT on html/body: overflow on the root propagates to
   the viewport and clips fixed elements (the player bar vanished in Firefox). "clip" only, so
   this never becomes a scroll container and sticky keeps working. */
main { overflow-x: clip; }
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); -webkit-text-size-adjust: 100%; }
body { min-height: 100dvh; padding-bottom: calc(var(--tabs-h) + var(--mini-h) + var(--safe-b) + 12px); overscroll-behavior-y: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; display: block; }
svg { display: block; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }
.eyebrow { font-size: 0.6875rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; font-weight: 600; }

/* ---------------------------------------------------------------- header */
.top { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: calc(env(safe-area-inset-top, 0px) + 10px) 16px 10px; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid #ffffff0d; }
.brand { display: flex; align-items: center; gap: 10px; text-align: left; min-width: 0; }
.brand-mark { width: 26px; height: 26px; border-radius: 7px; flex: none;
  background: radial-gradient(120% 90% at 30% 20%, #3b4552 0%, #0d1014 55%), #000; box-shadow: inset 0 0 0 1px #ffffff26, 0 0 18px #7fb2cf33; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-text b { font-size: 0.875rem; letter-spacing: .2em; }
.brand-text small { font-size: 0.6875rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-actions { display: flex; gap: 6px; flex: none; }
.icon-btn { display: inline-flex; align-items: center; gap: 6px; height: 38px; padding: 0 10px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn span { font-size: 0.8125rem; font-weight: 600; }
.locate-btn { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
@media (max-width: 380px) { .locate-btn span { display: none; } }

/* ---------------------------------------------------------------- views */
main { max-width: 1280px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }

/* path chips */
.paths { display: flex; gap: 8px; overflow-x: auto; padding: 12px 16px 4px; scrollbar-width: none; }
.paths::-webkit-scrollbar { display: none; }
.path-chip { flex: none; display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px 8px 8px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); font-size: 0.8125rem; color: var(--muted); }
.path-chip i { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-style: normal; font-weight: 800; font-size: 0.75rem; color: #0b0d10; background: var(--c, var(--muted)); }
.path-chip.on { color: var(--text); border-color: var(--c, var(--accent)); background: color-mix(in srgb, var(--c, var(--accent)) 16%, var(--surface)); }

.guide-grid { display: grid; gap: 14px; padding: 8px 16px 0; min-width: 0; }
.map-col, .list-col { min-width: 0; max-width: 100%; }
@media (min-width: 900px) {
  .guide-grid { grid-template-columns: minmax(0, 1.35fr) minmax(340px, 1fr); align-items: start; }
  .map-col { position: sticky; top: 72px; }
}

/* ---------------------------------------------------------------- map */
.map-card { position: relative; border-radius: var(--radius); background: radial-gradient(140% 100% at 50% 0%, #151b22, #0d1014 70%); border: 1px solid var(--line); overflow: hidden; touch-action: none; user-select: none; -webkit-user-select: none; }
/* padding box, so the map is sized correctly even where CSS aspect-ratio isn't applied to SVG */
.map-frame { position: relative; width: 100%; padding-top: 78.7%; }
#plan { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; touch-action: none; }
#plan.dragging { cursor: grabbing; }
.plan-floor { fill: #ffffff05; }
.plan-wall { fill: var(--wall); opacity: .85; }
.plan-door { stroke: var(--wall); stroke-width: 3; stroke-dasharray: 10 8; opacity: .8; fill: none; }
.plan-arrow { fill: var(--wall); }
.plan-glass { stroke: var(--wall); stroke-width: 3; stroke-dasharray: 18 14; opacity: .55; }
.pin { cursor: pointer; }
.pin .dot { fill: var(--c); stroke: #0b0d10; stroke-width: 2.5; transition: opacity .2s; }
.pin .num { font: 800 0.6875rem/1 var(--font); fill: #0b0d10; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.pin .halo { fill: var(--c); opacity: 0; }
.pin.dim .dot { opacity: .5; fill: color-mix(in srgb, var(--c) 45%, #1d222a); stroke-width: 1.5; }
.pin.dim .num { opacity: 0; }
.pin.sel .halo { opacity: .28; }
.pin.playing .halo { opacity: .35; animation: pulse 1.6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.pin.fav .dot { stroke: #fff; }
.place .glyph { fill: none; stroke: var(--muted); stroke-width: 1.6; }
.place .bg { fill: #0b0d10; stroke: var(--muted); stroke-width: 1.4; }
.place-label, .pin-label { font: 600 0.75rem/1 var(--font); fill: var(--text); paint-order: stroke; stroke: #0b0d10; stroke-width: 4px; stroke-linejoin: round; pointer-events: none; }
.place-label { fill: var(--muted); font-weight: 500; }
.me-marker .ring { fill: none; stroke: #fff; stroke-width: 2; animation: ring 2s ease-out infinite; transform-box: fill-box; transform-origin: center; }
.me-marker .core { fill: #fff; stroke: var(--accent); stroke-width: 3; }
.heat { mix-blend-mode: screen; pointer-events: none; }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.6); } }
@keyframes ring { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(2.4); opacity: 0; } }
.map-tools { position: absolute; right: 8px; bottom: 8px; display: flex; gap: 6px; z-index: 2; }
/* full screen map: fills the window, and can be turned sideways so a portrait phone shows much more */
.map-card.full { position: fixed; inset: 0; z-index: 38; border-radius: 0; border: 0; padding-top: env(safe-area-inset-top, 0px); }
.map-card.full .map-frame { padding-top: 0; height: calc(100vh - env(safe-area-inset-top, 0px)); }
@supports (height: 100dvh) { .map-card.full .map-frame { height: calc(100dvh - env(safe-area-inset-top, 0px)); } }
.map-card.full .map-tools { bottom: calc(14px + env(safe-area-inset-bottom, 0px)); right: 14px; }
.map-card.full .map-hint { bottom: calc(18px + env(safe-area-inset-bottom, 0px)); }
.map-card.zoomed .map-hint { opacity: 0 !important; }
.chip-btn { min-width: 36px; height: 36px; border-radius: 10px; background: #0b0d10cc; border: 1px solid var(--line); color: var(--muted); font-size: 1.0rem; }
.map-hint { position: absolute; left: 10px; bottom: 8px; font-size: 0.75rem; color: var(--faint); pointer-events: none; transition: opacity .6s; }

/* near */
.near { margin-top: 14px; }
.near-list { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
.near-list::-webkit-scrollbar { display: none; }
.near-card { flex: none; width: 150px; text-align: left; border-radius: 14px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); }
.near-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: var(--surface2); }
.near-card div { padding: 8px 10px 10px; }
.near-card b { display: block; font-size: 0.8125rem; line-height: 1.25; }
.near-card small { color: var(--muted); font-size: 0.6875rem; }

/* path head + stops */
.path-head { border-radius: var(--radius); padding: 16px; background: linear-gradient(160deg, color-mix(in srgb, var(--c, var(--accent)) 22%, var(--surface)) 0%, var(--surface) 70%); border: 1px solid var(--line); }
.path-head .kicker { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 0.75rem; letter-spacing: .1em; text-transform: uppercase; }
.path-head .kicker i { width: 24px; height: 24px; border-radius: 7px; display: grid; place-items: center; font-style: normal; font-weight: 800; color: #0b0d10; background: var(--c, var(--accent)); letter-spacing: 0; }
.path-head h2 { margin: 10px 0 4px; font-size: 1.375rem; line-height: 1.15; letter-spacing: -.01em; }
.path-head p { margin: 0 0 14px; color: var(--muted); font-size: 0.875rem; }
.path-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.btn { display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 16px; border-radius: 12px; background: var(--surface2); border: 1px solid var(--line); font-weight: 600; font-size: 0.875rem; }
.btn svg { width: 18px; height: 18px; fill: currentColor; }
.btn.primary { background: var(--text); color: #0b0d10; border-color: transparent; }
.btn.small { height: 34px; padding: 0 12px; font-size: 0.8125rem; border-radius: 10px; }
.btn.ghost { background: transparent; }

.stops { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 8px; }
.stop { display: grid; grid-template-columns: 26px 64px 1fr auto; align-items: center; gap: 10px; padding: 8px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); cursor: pointer; }
.stop.playing { border-color: var(--c); box-shadow: 0 0 0 1px var(--c) inset; }
.stop .n { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: 0.75rem; font-weight: 800; background: var(--c); color: #0b0d10; }
.stop img { width: 64px; height: 52px; object-fit: cover; border-radius: 9px; background: var(--surface2); }
.stop .t { min-width: 0; }
.stop .t b { display: block; font-size: 0.875rem; line-height: 1.25; }
.stop .t small { display: block; color: var(--muted); font-size: 0.75rem; margin-top: 2px; }
.stop .play { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; background: var(--surface2); }
.stop .play svg { width: 16px; height: 16px; fill: currentColor; }

.threads-box { margin: 22px 0 8px; }
.threads { display: grid; gap: 8px; }
.thread { text-align: left; padding: 12px 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
.thread b { font-size: 0.875rem; }
.thread p { margin: 4px 0 8px; color: var(--muted); font-size: 0.8125rem; line-height: 1.4; }
.dots { display: flex; gap: 4px; flex-wrap: wrap; }
.dots span { font-size: 0.6875rem; padding: 3px 8px; border-radius: 99px; background: color-mix(in srgb, var(--c) 22%, transparent); color: var(--text); border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); }

/* ---------------------------------------------------------------- sheet */
.sheet-backdrop { position: fixed; inset: 0; background: #000a; z-index: 40; animation: fade .2s; }
.sheet { position: fixed; z-index: 41; left: 0; right: 0; bottom: 0; max-height: 92dvh; overflow-y: auto; background: var(--bg2); border-radius: 22px 22px 0 0; border: 1px solid var(--line); border-bottom: 0;
  padding: 0 0 calc(24px + var(--safe-b)); animation: up .28s cubic-bezier(.2, .8, .2, 1); overscroll-behavior: contain; }
@media (min-width: 900px) {
  .sheet { left: auto; right: 16px; top: 80px; bottom: 16px; width: 440px; border-radius: 22px; border-bottom: 1px solid var(--line); max-height: none; }
}
.sheet-grip { position: sticky; top: 0; height: 22px; display: grid; place-items: center; z-index: 2; }
.sheet-grip::before { content: ""; width: 44px; height: 5px; border-radius: 9px; background: #ffffff33; }
.sheet-close { position: absolute; right: 12px; top: 12px; z-index: 3; width: 36px; height: 36px; border-radius: 50%; background: #000a; font-size: 1.125rem; }
.sheet-hero { position: relative; margin-top: -22px; }
.sheet-hero img { width: 100%; max-height: 46dvh; object-fit: cover; background: #000; }
.sheet-body { padding: 16px 18px 0; }
.sec-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; color: var(--muted); }
.sec-chip i { width: 18px; height: 18px; border-radius: 5px; display: grid; place-items: center; font-style: normal; font-size: 0.6875rem; font-weight: 800; color: #0b0d10; background: var(--c); }
.sheet h2 { font-size: 1.5rem; line-height: 1.15; margin: 10px 0 6px; letter-spacing: -.01em; }
.sheet .artist { font-size: 0.9375rem; color: var(--text); }
.sheet .meta { color: var(--muted); font-size: 0.8125rem; margin-top: 4px; }
.sheet .actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 6px; }
.fav-btn.on { color: #ff7a93; border-color: #ff7a9366; }
.fav-btn.on svg { fill: #ff7a93; }
.fav-btn svg { fill: none; stroke: currentColor; stroke-width: 2; }
.goes { margin: 20px 0 0; }
.goes-row { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px; }
.goes .near-card { width: 130px; }
.thread-note { font-size: 0.75rem; color: var(--muted); margin: -4px 0 10px; }
.text { font-family: var(--serif); font-size: 1.125rem; line-height: 1.62; color: #d9e0e7; margin-top: 18px; }
.text p { margin: 0 0 1em; }
.text .s { border-radius: 4px; transition: background .25s, color .25s; cursor: pointer; }
.text .s.now { background: color-mix(in srgb, var(--c, var(--accent)) 28%, transparent); color: #fff; box-shadow: 0 0 0 3px color-mix(in srgb, var(--c, var(--accent)) 28%, transparent); }
.text .s.past { color: #9aa6b2; }
.credit { font-size: 0.75rem; color: var(--faint); margin-top: -6px; }

/* ---------------------------------------------------------------- mini player + tabs */
.tabs { position: fixed; left: 0; right: 0; bottom: 0; z-index: 35; display: flex; justify-content: space-around; height: calc(var(--tabs-h) + var(--safe-b)); padding-bottom: var(--safe-b);
  background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-top: 1px solid #ffffff10; }
.tabs button { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; color: var(--faint); font-size: 0.75rem; font-weight: 600; }
.tabs svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linejoin: round; }
.tabs button.active { color: var(--text); }
.mini { position: fixed; z-index: 36; left: 10px; right: 10px; bottom: calc(var(--tabs-h) + var(--safe-b) + 8px); height: 60px; display: flex; align-items: center; gap: 8px; padding: 0 8px 0 6px;
  border-radius: 16px; background: #1b2028f2; border: 1px solid #ffffff17; backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); box-shadow: 0 10px 30px #0008; overflow: hidden; }
@media (min-width: 900px) { .mini { left: 50%; width: 560px; transform: translateX(-50%); } }
.mini-progress { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: #ffffff10; }
.mini-progress i { display: block; height: 100%; width: 0; background: var(--c, var(--accent)); }
.mini-main { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; text-align: left; }
.mini-main img { width: 46px; height: 46px; border-radius: 10px; object-fit: cover; background: var(--surface2); }
.mini-meta { min-width: 0; display: flex; flex-direction: column; }
.mini-meta b { font-size: 0.875rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-meta small { font-size: 0.75rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.round { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--text); color: #0b0d10; flex: none; }
.round svg { width: 18px; height: 18px; fill: currentColor; }
.round.loading svg { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------------------- reader */
.reader { position: fixed; inset: 0; z-index: 50; background: var(--bg); display: flex; flex-direction: column; animation: up .3s cubic-bezier(.2, .8, .2, 1); }
.reader-top { display: flex; align-items: center; gap: 10px; padding: calc(env(safe-area-inset-top, 0px) + 10px) 14px 10px; border-bottom: 1px solid #ffffff0d; }
.reader-top img { width: 44px; height: 44px; border-radius: 10px; object-fit: cover; }
.reader-top .mt { flex: 1; min-width: 0; }
.reader-top b { display: block; font-size: 0.9375rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.reader-top small { color: var(--muted); font-size: 0.75rem; }
.reader-scroll { flex: 1; overflow-y: auto; padding: 18px 20px 40vh; scroll-behavior: smooth; }
.reader-scroll .text { max-width: 680px; margin: 0 auto; font-size: 1.25rem; }
.reader-scroll .text .s.past { color: #7c8792; }
.reader-scroll .text .s:not(.now):not(.past) { color: #c3ccd5; }
.queue-note { max-width: 680px; margin: 0 auto 12px; font-size: 0.75rem; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.reader-ctl { padding: 10px 16px calc(14px + var(--safe-b)); border-top: 1px solid #ffffff10; background: var(--bg2); }
.scrub { position: relative; height: 26px; display: flex; align-items: center; cursor: pointer; touch-action: none; }
.scrub .track { position: relative; width: 100%; height: 4px; border-radius: 3px; background: #ffffff1a; }
.scrub .fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 3px; background: var(--c, var(--accent)); }
.scrub .tick { position: absolute; top: -3px; width: 2px; height: 10px; background: #ffffff40; border-radius: 1px; }
.scrub .knob { position: absolute; top: 50%; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%; background: #fff; }
.times { display: flex; justify-content: space-between; font-size: 0.6875rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.ctl-row { display: flex; align-items: center; justify-content: center; gap: 18px; margin: 6px 0 10px; }
.ctl-row .skip { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; }
.ctl-row .skip svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.ctl-row .round { width: 64px; height: 64px; }
.ctl-row .round svg { width: 24px; height: 24px; }
.opt-row { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; justify-content: center; flex-wrap: wrap; }
.seg { display: inline-flex; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; padding: 3px; }
.seg button { height: 30px; padding: 0 10px; border-radius: 8px; font-size: 0.8125rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.seg button.on { background: var(--text); color: #0b0d10; font-weight: 700; }
.pill { height: 36px; padding: 0 12px; border-radius: 11px; background: var(--surface); border: 1px solid var(--line); font-size: 0.8125rem; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
.pill.on { color: var(--text); border-color: var(--accent); }

/* ---------------------------------------------------------------- settings */
.settings { width: min(560px, calc(100vw - 20px)); max-height: 88dvh; padding: 0; border-radius: 20px; border: 1px solid var(--line); background: var(--bg2); color: var(--text); }
.settings::backdrop { background: #000b; }
.set-head { position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center; padding: 16px 18px; background: var(--bg2); border-bottom: 1px solid var(--line); z-index: 2; }
.set-head h2 { margin: 0; font-size: 1.125rem; }
.set-body { padding: 8px 18px 20px; }
.set-group { margin: 16px 0 6px; }
.set-group > p { color: var(--muted); font-size: 0.8125rem; margin: -4px 0 10px; line-height: 1.4; }
.voice-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 8px; }
.voice { position: relative; text-align: left; padding: 12px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
.voice b { display: block; font-size: 0.9375rem; }
.voice small { display: block; color: var(--muted); font-size: 0.75rem; margin-top: 2px; line-height: 1.35; }
.voice .wave { display: flex; gap: 2px; align-items: end; height: 16px; margin-top: 8px; }
.voice .wave i { width: 3px; border-radius: 2px; background: var(--muted); opacity: .6; }
.voice.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--surface)); }
.voice.on .wave i { background: var(--accent); opacity: 1; }
.voice .try { position: absolute; right: 8px; top: 8px; font-size: 0.6875rem; padding: 4px 8px; border-radius: 8px; background: var(--surface2); color: var(--muted); border: 1px solid var(--line); }
.row { display: flex; align-items: center; gap: 12px; }
.row label { flex: 1; font-size: 0.875rem; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.engine-status { font-size: 0.75rem; color: var(--muted); margin-top: 8px; }
.bar { height: 6px; background: var(--surface2); border-radius: 4px; overflow: hidden; margin-top: 6px; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.select { width: 100%; height: 40px; border-radius: 10px; background: var(--surface); color: var(--text); border: 1px solid var(--line); padding: 0 10px; font: inherit; }
.small-print { font-size: 0.75rem; color: var(--faint); line-height: 1.5; }

/* ---------------------------------------------------------------- camera */
.cam { position: fixed; inset: 0; z-index: 60; background: #000; display: flex; flex-direction: column; }
.cam video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cam-top { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; padding: calc(env(safe-area-inset-top, 0px) + 12px) 14px 12px; background: linear-gradient(#000c, #0000); }
.cam-top b { font-size: 0.9375rem; }
.cam-top small { display: block; color: #ffffffb0; font-size: 0.75rem; }
.reticle { position: absolute; z-index: 1; left: 50%; top: 44%; width: min(72vw, 420px); aspect-ratio: 1; transform: translate(-50%, -50%); border-radius: 26px; box-shadow: 0 0 0 200vmax #0005; }
.reticle::before, .reticle::after { content: ""; position: absolute; inset: 0; border-radius: 26px; border: 2px solid #ffffff55; }
.reticle.scanning::after { border-color: var(--accent); animation: breathe 1.4s ease-in-out infinite; }
@keyframes breathe { 50% { opacity: .35; } }
.ar-tag { position: absolute; z-index: 3; left: 50%; top: 44%; transform: translate(-50%, -50%); width: min(80vw, 380px); display: flex; gap: 12px; align-items: center; padding: 10px; border-radius: 18px;
  background: #0b0d10e6; border: 1px solid var(--c, var(--accent)); box-shadow: 0 0 40px color-mix(in srgb, var(--c, var(--accent)) 45%, transparent); animation: pop .25s cubic-bezier(.2, .9, .3, 1.3); }
.ar-tag img { width: 64px; height: 64px; border-radius: 12px; object-fit: cover; }
.ar-tag b { display: block; font-size: 1.0rem; line-height: 1.2; }
.ar-tag small { color: var(--muted); font-size: 0.75rem; }
@keyframes pop { from { transform: translate(-50%, -50%) scale(.85); opacity: 0; } }
.cam-bottom { position: absolute; z-index: 2; left: 0; right: 0; bottom: 0; padding: 14px 14px calc(16px + var(--safe-b)); background: linear-gradient(#0000, #000e 30%); }
.guesses { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 12px; scrollbar-width: none; }
.guess { flex: none; width: 104px; text-align: left; border-radius: 12px; overflow: hidden; background: #161a20e6; border: 1px solid var(--line); }
.guess img { width: 100%; height: 64px; object-fit: cover; }
.guess div { padding: 6px 8px; }
.guess b { display: block; font-size: 0.75rem; line-height: 1.2; max-height: 2.4em; overflow: hidden; }
.guess .conf { height: 3px; background: #ffffff1a; margin-top: 6px; border-radius: 2px; }
.guess .conf i { display: block; height: 100%; background: var(--c); border-radius: 2px; }
.cam-msg { font-size: 0.8125rem; color: #ffffffcc; text-align: center; margin: 0 0 10px; min-height: 1.3em; }
.cam-actions { display: flex; gap: 8px; justify-content: center; }
.minimap { position: absolute; z-index: 2; right: 12px; top: calc(env(safe-area-inset-top, 0px) + 64px); width: 132px; border-radius: 12px; background: #0b0d10cc; border: 1px solid var(--line); overflow: hidden; }

/* ---------------------------------------------------------------- lab */
.lab, .me { padding: 12px 16px 24px; max-width: 900px; margin: 0 auto; }
.lab h2, .me h2 { font-size: 1.375rem; margin: 6px 0 4px; }
.lab > p, .me > p { color: var(--muted); margin: 0 0 14px; font-size: 0.875rem; line-height: 1.45; }
.stage-wrap { position: sticky; top: 54px; z-index: 5; border-radius: 16px; overflow: hidden; background: #000; border: 1px solid var(--line); touch-action: none;
  box-shadow: 0 10px 30px #0007; }
.stage-wrap canvas { max-height: 46dvh; width: auto; max-width: 100%; margin: 0 auto; }
.stage-wrap canvas { width: 100%; height: auto; display: block; }
.stage-empty { display: grid; place-items: center; aspect-ratio: 1; gap: 10px; text-align: center; padding: 20px; color: var(--muted); }
.lab-tools { display: flex; gap: 8px; overflow-x: auto; margin: 12px 0; scrollbar-width: none; }
.filters { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
.filter { flex: none; text-align: center; font-size: 0.6875rem; color: var(--muted); }
.filter canvas { width: 64px; height: 64px; border-radius: 12px; display: block; margin-bottom: 4px; border: 2px solid transparent; }
.filter.on canvas { border-color: var(--accent); }
.filter.on { color: var(--text); }
.drawer { margin-top: 12px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.drawer-tabs { display: flex; gap: 4px; overflow-x: auto; padding: 8px; border-bottom: 1px solid var(--line); scrollbar-width: none; }
.drawer-tabs button { flex: none; height: 30px; padding: 0 10px; border-radius: 9px; font-size: 0.75rem; color: var(--muted); }
.drawer-tabs button.on { background: var(--surface2); color: var(--text); }
.drawer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: 6px; padding: 8px; }
.drawer-grid button { aspect-ratio: 1; border-radius: 10px; background: var(--surface2); padding: 6px; }
.drawer-grid img { width: 100%; height: 100%; object-fit: contain; }
.sel-bar { display: flex; gap: 8px; align-items: center; margin-top: 10px; flex-wrap: wrap; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; }
.gallery figure { margin: 0; position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); background: var(--surface); }
.gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.gallery figcaption { font-size: 0.6875rem; color: var(--muted); padding: 6px 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gallery .x { position: absolute; top: 6px; right: 6px; width: 32px; height: 32px; border-radius: 50%; background: #000c; border: 1px solid #ffffff33; font-size: 1rem; color: #fff; }
.textin { width: 100%; height: 42px; border-radius: 10px; background: var(--surface); color: var(--text); border: 1px solid var(--line); padding: 0 12px; font: inherit; }
.card { border-radius: 16px; background: var(--surface); border: 1px solid var(--line); padding: 16px; margin-bottom: 12px; }
.card h3 { margin: 0 0 6px; font-size: 1.0rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.875rem; line-height: 1.45; }
.fav-list { display: grid; gap: 8px; margin-top: 10px; }

/* ---------------------------------------------------------------- misc */
.toast { position: fixed; z-index: 90; left: 50%; bottom: calc(var(--tabs-h) + var(--mini-h) + var(--safe-b) + 24px); transform: translateX(-50%) translateY(20px); opacity: 0; pointer-events: none;
  padding: 10px 14px; border-radius: 12px; background: #eef3f7; color: #0b0d10; font-size: 0.8125rem; font-weight: 600; transition: .25s; max-width: calc(100vw - 32px); text-align: center; }
.toast.show { opacity: 1; transform: translateX(-50%); }
@keyframes up { from { transform: translateY(40px); opacity: 0; } }
@keyframes fade { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* glossary */
.term { font: inherit; color: inherit; padding: 0; background: none; border: 0; cursor: help; text-decoration: underline dotted color-mix(in srgb, var(--accent) 80%, transparent); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.term:hover { color: #fff; }
.gloss { position: fixed; z-index: 95; padding: 12px 14px; border-radius: 14px; background: #eef3f7; color: #0b0d10; box-shadow: 0 12px 40px #000a; font-size: 0.875rem; line-height: 1.45; animation: fade .15s; }
.gloss b { display: block; font-size: 0.9375rem; margin-bottom: 4px; }
.gloss p { margin: 0; }

/* tour */
.tour { position: fixed; inset: 0; z-index: 120; }
.tour-hole { position: fixed; border-radius: 14px; box-shadow: 0 0 0 200vmax #000c; transition: all .3s cubic-bezier(.2,.8,.2,1); pointer-events: none; outline: 2px solid var(--accent); outline-offset: 2px; }
.tour-card { position: fixed; padding: 16px; border-radius: 18px; background: var(--bg2); border: 1px solid var(--line); box-shadow: 0 16px 50px #000c; transition: top .3s, left .3s; }
.tour-card small { color: var(--faint); font-size: 0.6875rem; letter-spacing: .1em; }
.tour-card b { display: block; font-size: 1.125rem; margin: 4px 0 6px; }
.tour-card p { margin: 0 0 14px; color: #c9d2db; font-size: 0.9375rem; line-height: 1.5; }
.tour-btns { display: flex; gap: 8px; align-items: center; }
.tour-btns span { flex: 1; }
.term.demo { cursor: default; }

/* reflection */
.rf h3 { font-size: 1.0625rem; margin: 0 0 6px; }
.rf p { margin: 0 0 10px; }
.rf .rec { font-size: 0.6875rem; font-weight: 700; color: #0b0d10; background: #f5c16c; padding: 2px 8px; border-radius: 99px; vertical-align: middle; margin-left: 6px; }
.rf-progress { height: 4px; border-radius: 3px; background: var(--surface2); margin: 0 0 14px; overflow: hidden; }
.rf-progress i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.row2 { display: flex; gap: 8px; }
.ta { height: auto; padding: 10px 12px; resize: vertical; line-height: 1.4; margin-top: 8px; font-size: 0.9375rem; }
.slot { margin-top: 14px; }
.slot-k { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 0.875rem; margin-bottom: 6px; }
.medal { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--text); color: #0b0d10; font-size: 0.75rem; }
.pickbtn { width: 100%; display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 12px; background: var(--surface2); border: 1px dashed var(--line); text-align: left; min-height: 56px; }
.pickbtn img { width: 56px; height: 44px; object-fit: cover; border-radius: 8px; }
.pickbtn span { flex: 1; min-width: 0; }
.pickbtn b { display: block; font-size: 0.875rem; }
.pickbtn small { color: var(--muted); font-size: 0.75rem; }
.pickbtn i { font-style: normal; font-size: 0.75rem; color: var(--muted); }
.pickbtn .ph { color: var(--muted); padding-left: 6px; }
.vibes { display: flex; flex-wrap: wrap; gap: 8px; }
.vibe { display: inline-flex; align-items: center; gap: 8px; padding: 9px 12px; border-radius: 999px; font-size: 0.875rem; background: color-mix(in srgb, var(--v) 12%, var(--surface2)); border: 1px solid color-mix(in srgb, var(--v) 35%, transparent); color: var(--muted); text-align: left; }
.vibe span { font-size: 1.125rem; }
.vibe.on { background: color-mix(in srgb, var(--v) 40%, var(--surface2)); color: #fff; border-color: var(--v); box-shadow: 0 0 18px color-mix(in srgb, var(--v) 35%, transparent); }
.temp { -webkit-appearance: none; appearance: none; height: 10px; border-radius: 6px; background: linear-gradient(90deg, #86cfee, #c9c3d6, #f5a25d); }
.temp::-webkit-slider-thumb { -webkit-appearance: none; width: 28px; height: 28px; border-radius: 50%; background: #fff; border: 3px solid #0b0d10; }
.temp-lbl { display: flex; justify-content: space-between; align-items: center; font-size: 0.6875rem; color: var(--muted); margin-top: 6px; }
.temp-lbl b { font-size: 1.375rem; color: var(--text); }
.p3-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px; }
.p3tab { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 12px 6px; border-radius: 14px; background: var(--surface2); border: 1px solid var(--line); font-size: 0.8125rem; color: var(--muted); font-weight: 600; }
.p3tab span { font-size: 1.375rem; }
.p3tab.on { border-color: var(--accent); color: var(--text); background: color-mix(in srgb, var(--accent) 14%, var(--surface2)); }
.linker { position: relative; display: grid; grid-template-columns: 1fr 44px 1fr; height: 380px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); overflow: hidden; touch-action: pan-y; }
.lk-col { overflow-y: auto; padding: 6px; display: flex; flex-direction: column; gap: 6px; scrollbar-width: thin; }
.lk-col[data-side="L"] { grid-column: 1; } .lk-col[data-side="R"] { grid-column: 3; }
.lk-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.lk-lines path { fill: none; stroke-width: 3; opacity: .9; }
.lk-lines path.live { stroke: #fff; stroke-dasharray: 6 5; }
.lk { display: flex; align-items: center; gap: 6px; padding: 4px; border-radius: 10px; background: var(--surface); border: 1px solid transparent; text-align: left; font-size: 0.6875rem; line-height: 1.2; color: var(--muted); user-select: none; -webkit-user-select: none; touch-action: pan-y; }
.lk img { width: 38px; height: 30px; object-fit: cover; border-radius: 6px; flex: none; pointer-events: none; }
.lk span { overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; pointer-events: none; }
.lk.sel { border-color: #fff; color: #fff; }
.lk.linked { border-color: var(--c); color: var(--text); }
.lk-list { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.lk-pair { font-size: 0.75rem; padding: 5px 6px 5px 10px; border-radius: 99px; background: var(--surface2); display: inline-flex; gap: 6px; align-items: center; }
.lk-pair button { width: 20px; height: 20px; border-radius: 50%; background: #0006; font-size: 0.625rem; }
.wc { font-size: 0.75rem; color: var(--muted); margin-top: 6px; font-variant-numeric: tabular-nums; }
.wc.ok { color: #7ee2a0; } .wc.over { color: #ff8a8a; }
.warnbox { padding: 12px 14px; border-radius: 12px; background: #f5c16c1f; border: 1px solid #f5c16c66; color: #f3dcae; font-size: 0.875rem; line-height: 1.45; margin-bottom: 10px; }
.gallery figure.chosen { outline: 3px solid var(--accent); }
.gallery figure[data-rmx] { cursor: pointer; }
.codebox { margin: 14px 0; padding: 14px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); text-align: center; }
.codebox small { display: block; color: var(--muted); font-size: 0.6875rem; letter-spacing: .12em; text-transform: uppercase; }
.codebox b { font: 700 1.75rem ui-monospace, Menlo, monospace; letter-spacing: .06em; }
.pdf-prev { width: 100%; border-radius: 10px; margin-bottom: 12px; box-shadow: 0 10px 30px #0008; }
.picker .pick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; }
.pick-grid button { position: relative; text-align: left; border-radius: 12px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); padding-bottom: 8px; }
.pick-grid img { width: 100%; aspect-ratio: 4/3; object-fit: cover; margin-bottom: 6px; }
.pick-grid b { display: block; font-size: 12.5px; padding: 0 8px; line-height: 1.25; }
.pick-grid small { display: block; font-size: 0.6875rem; color: var(--muted); padding: 2px 8px 0; }
.pick-grid em { position: absolute; top: 6px; right: 8px; font-style: normal; color: #ff7a93; font-size: 1.125rem; text-shadow: 0 1px 4px #000; }
.hand-card { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }

/* shown when a touch device lays the page out at desktop width */
.fitbar { position: fixed; z-index: 100; left: 12px; right: 12px; top: 12px; padding: 14px 16px; border-radius: 16px;
  background: #eef3f7; color: #0b0d10; box-shadow: 0 14px 40px #0009; font-size: 0.95rem; line-height: 1.45; }
.fitbar p { margin: 0 0 10px; }
.fitbar-btns { display: flex; gap: 8px; }
.fitbar .btn { background: #0b0d10; color: #eef3f7; border-color: transparent; }
.fitbar .btn.ghost { background: transparent; color: #46505c; }