/* ============================================================
   DIMO Motion Lab — interactive.html. Its own sheet: the lab
   shares the project page's palette and faces but none of its
   layout. Two palettes, read off html[data-theme]: dark is the
   project page's hero (the latent space), light its paper body.
   The row of bodies on the stage is the one loud thing; every
   piece of chrome around it is set quiet and small.
   ============================================================ */

:root {
  --bg: #0B0E14;
  --bg-2: #10141C;
  --ink: #F4F6FA;
  --ink-2: #9AA3B2;
  --line: rgba(244, 246, 250, 0.12);
  --line-soft: rgba(244, 246, 250, 0.07);
  --chrome: rgba(16, 20, 28, 0.82);
  --raise: rgba(244, 246, 250, 0.05);
  --raise-2: rgba(244, 246, 250, 0.09);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --blue: #3B82F6;
  --violet: #8B5CF6;
  --pink: #FF5C8A;
  --spectrum: linear-gradient(90deg, var(--blue), var(--violet), var(--pink));
  --display: "Space Grotesk", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --panel: 340px;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #EEF0F4;
  --bg-2: #FFFFFF;
  --ink: #0E1320;
  --ink-2: #5C6472;
  --line: rgba(14, 19, 32, 0.12);
  --line-soft: rgba(14, 19, 32, 0.07);
  --chrome: rgba(255, 255, 255, 0.82);
  --raise: rgba(14, 19, 32, 0.05);
  --raise-2: rgba(14, 19, 32, 0.09);
  --shadow: 0 18px 40px rgba(14, 19, 32, 0.12);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button, select {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

/* The one gradient device, as on the project page: a hairline at the top. */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--spectrum);
  z-index: 20;
}

/* ---------- Shell ---------- */
.lab-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--panel);
  height: 100%;
  height: 100dvh;
}

.stage { position: relative; min-width: 0; }

.viewer-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

.viewer-wrapper canvas { display: block; }

/* While the models load: the stage is covered (the camera is not fitted yet,
   so the floor would show at the wrong scale) under the same words, type and
   spinner as UniMate's (resources/overview/unimate/css/interactive.css), in
   this lab's palette. The chrome stays above it. The homepage thumbnail takes
   UniMate's light values outright, below, so the two load identically. It
   replaced a spectrum hairline pulsing along the stage top. */
#loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 11px;
  color: var(--ink);
  background: var(--bg);
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.viewer-wrapper.is-loading #loading-overlay { display: flex; }

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--line);
  border-top-color: var(--violet);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

@keyframes spin { to { transform: rotate(1turn); } }

/* ---------- Stage head: wordmark + object switch ---------- */
.stage-head {
  position: absolute;
  top: 20px;
  left: 22px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 18px;
}

.wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.wordmark span {
  font-weight: 500;
  color: var(--ink-2);
}

.wordmark:hover span { color: var(--ink); }

.object-rail {
  display: flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chrome);
  backdrop-filter: blur(14px);
}

.object-rail button {
  padding: 6px 13px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font-family: var(--display);
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
}

.object-rail button:hover { color: var(--ink); }

.object-rail button.is-active {
  color: var(--ink);
  background: var(--raise-2);
}

/* ---------- Stage side: theme + facts (top-right) ---------- */
.stage-side {
  position: absolute;
  top: 20px;
  right: 22px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  max-width: 260px;
  text-align: right;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chrome);
  color: var(--ink-2);
  font-family: var(--display);
  font-weight: 500;
  font-size: 12px;
  cursor: pointer;
  backdrop-filter: blur(14px);
}

.theme-toggle:hover { color: var(--ink); }

.theme-toggle i {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, #0B0E14 50%, #EEF0F4 50%);
}

.stage-facts {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--ink-2);
}

/* ---------- Body tags on the stage ---------- */
.stage-tags {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.tag {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px 4px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chrome);
  color: var(--ink-2);
  font-family: var(--display);
  font-weight: 500;
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
  backdrop-filter: blur(10px);
  will-change: transform;
}

.tag::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c, var(--violet));
  box-shadow: 0 0 8px var(--c, var(--violet));
}

.tag:hover { color: var(--ink); }

.tag.is-selected {
  color: var(--ink);
  border-color: var(--c, var(--violet));
}

.tag[hidden] { display: none; }

/* ---------- Dock (bottom of the stage) ---------- */
.dock {
  position: absolute;
  left: 50%;
  bottom: 20px;
  z-index: 5;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 2px;
  max-width: calc(100% - 44px);
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--chrome);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.dock-group {
  display: flex;
  gap: 2px;
  padding: 0 3px;
}

.dock-group + .dock-group { border-left: 1px solid var(--line-soft); }

.dock button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-2);
  font-family: var(--display);
  font-weight: 500;
  font-size: 12.5px;
  white-space: nowrap;
  cursor: pointer;
}

.dock button:hover { color: var(--ink); background: var(--raise); }

.dock button.is-active {
  color: var(--ink);
  background: var(--raise-2);
}

kbd {
  font-family: var(--body);
  font-size: 10px;
  line-height: 1;
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--ink-2);
}

/* The decoder's time condition: one period, drawn under the dock as a fill. */
.phase-bar {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--line-soft);
}

.phase-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(var(--u, 0));
  background: var(--spectrum);
}

/* ---------- Latent panel ---------- */
.latent-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px 20px 20px;
  border-left: 1px solid var(--line);
  background: var(--bg-2);
  overflow-y: auto;
}

.panel-head h1 {
  margin: 0 0 6px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.panel-head p,
.panel-hint {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 34em;
}

#latent-canvas {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3.2;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  cursor: crosshair;
  touch-action: none;
}

/* Which body the sheet edits, and where its code is. */
.selection {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: -8px 0 0;
  font-size: 12px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.selection-body {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--display);
  font-weight: 600;
  color: var(--ink);
}

.selection-body::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c, var(--violet));
  box-shadow: 0 0 8px var(--c, var(--violet));
}

.latent-actions {
  display: flex;
  gap: 8px;
}

.action {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--raise);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.action:hover { background: var(--raise-2); }
.action:disabled { opacity: 0.45; cursor: default; }

.action.is-active {
  border-color: rgba(139, 92, 246, 0.7);
  background: rgba(139, 92, 246, 0.16);
}

.action.is-flash { transform: scale(0.97); }

/* Interpolation: A and B, the row does the rest. */
.interp {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: var(--raise);
}

.interp[hidden] { display: none; }

.interp p {
  grid-column: 1 / -1;
  margin: 0 0 2px;
  font-size: 12px;
  color: var(--ink-2);
}

.interp label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 12px;
}

.interp select {
  flex: 1;
  min-width: 0;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font-size: 12px;
}

.panel-section h2 {
  margin: 0 0 4px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
}

.panel-section .panel-hint { margin-bottom: 10px; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--raise);
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.3;
  text-align: left;
  cursor: pointer;
}

.chip:hover { color: var(--ink); background: var(--raise-2); }

.chip.is-active {
  color: var(--ink);
  border-color: var(--c, var(--violet));
}

/* Decoder weights: name · bar · value, one row per basis motion, in the
   selected body's colour. */
.weights {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.weights li {
  display: grid;
  grid-template-columns: 84px 1fr 34px;
  align-items: center;
  gap: 10px;
}

.weights li.is-lead .w-name,
.weights li.is-lead .w-value { color: var(--ink); }

.w-bar {
  position: relative;
  height: 4px;
  border-radius: 2px;
  background: var(--line-soft);
  overflow: hidden;
}

.w-bar i {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(var(--w, 0));
  background: var(--c, var(--violet));
  transition: transform 0.12s ease;
}

.w-value { text-align: right; }

.panel-foot {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--ink-2);
}

.panel-foot a { color: var(--ink); }
.panel-foot strong { color: var(--ink); font-weight: 600; }

/* ---------- Embedded (interactive.html?embed) ---------- */
/* The root homepage frames the lab as DIMO's thumbnail, ~255px wide: the
   stage alone. Every piece of chrome goes — the head, the facts, the body
   tags, the dock (and the phase bar inside it), the latent panel, the top
   spectrum hairline — and the shell drops to one cell. The class is set in
   the page's head script. */
html.is-embed .stage-head,
html.is-embed .stage-side,
html.is-embed .stage-tags,
html.is-embed .dock,
html.is-embed .latent-panel,
html.is-embed body::before {
  display: none;
}

/* UniMate's embed values — its light --ink, --line, --signal over --stage —
   so the two thumbnails load identically. */
html.is-embed #loading-overlay {
  color: #171916;
  background: #F0EEE6;
}

html.is-embed .spinner {
  border-color: rgba(23, 25, 22, 0.18);
  border-top-color: #ee5b38;
}

/* Its dark values when the homepage is dark: --ink, --line, --signal over
   the #151817 stage, the homepage's dark plate. */
html.is-embed[data-theme="dark"] #loading-overlay {
  color: #f2eee8;
  background: #151817;
}

html.is-embed[data-theme="dark"] .spinner {
  border-color: rgba(242, 238, 232, 0.16);
  border-top-color: #e9873f;
}

html.is-embed .lab-shell {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
}

/* The stage's own ivory (viewer.js THEMES.light.background), not the light
   palette's cool --bg: it is what shows before the scene paints and while the
   canvas fades between the thumbnail's objects, and it has to match. */
html.is-embed {
  --bg: #F0EEE6;
}

/* Dark: the framed dark stage (viewer.js THEMES.dark when embedded). */
html.is-embed[data-theme="dark"] {
  --bg: #151817;
}

/* The fade between objects (viewer.js advanceCycle, FADE_SECONDS). */
html.is-embed .viewer-wrapper canvas {
  transition: opacity 180ms ease;
}

html.is-embed .viewer-wrapper.is-switching canvas {
  opacity: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  :root { --panel: 300px; }
  .stage-facts { display: none; }
}

@media (max-width: 720px) {
  .lab-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) auto;
  }

  .latent-panel {
    max-height: 46dvh;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 16px 16px 18px;
    gap: 14px;
  }

  #latent-canvas { aspect-ratio: 16 / 9; }

  .stage-head { top: 14px; left: 14px; gap: 10px; }
  .wordmark span { display: none; }
  .stage-side { top: 14px; right: 14px; }
  .dock { bottom: 12px; max-width: calc(100% - 24px); overflow-x: auto; }
  kbd { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .action, .w-bar i { transition: none; }
  html.is-embed .viewer-wrapper canvas { transition: none; }
}