/* ============================================================
   MV-SAM3D — Agreement Ranch (index.html)
   Dusk identity: #090c10 night · #e39b2d amber · #86d7ea ice
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

/* Native [hidden] is intentionally reinforced: the opening guide and tour
   controls are populated/toggled by the module after first paint, so a late
   stylesheet or animation must never expose inactive panels for one frame. */
[hidden] { display: none !important; }

:root {
  --night: #090c10;
  --amber: #e39b2d;
  --ice: #86d7ea;
  --paper: #e8e4da;
  --dim: #8b95a0;
  --line: rgba(240, 235, 225, 0.14);
}

html, body {
  height: 100%;
  background: var(--night);
  color: var(--paper);
  font-family: "Archivo", system-ui, sans-serif;
  overflow: hidden;
  text-rendering: optimizeLegibility;
}

.hud-mono {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.08em;
}

/* Keep onboarding poster-like: the ranch itself stays alive behind the intro,
   while operational chrome appears only after the visitor picks a route. */
body:not(.world-entered) :is(
  .labels, .station-chip, .carry-status, .dock, .hint,
  .research-guide, .entry-toast, #stationPanel, .travel-caption,
  .auto-tour-hud, .fullscreen-btn
) {
  visibility: hidden;
  pointer-events: none;
}

/* The world uses ice for navigation/state and amber for the evidence route. */
body .global-nav__link--current {
  color: var(--night);
  background: var(--ice);
  border-color: var(--ice);
}
body .global-nav__link--current:hover,
body .global-nav__link--current:focus-visible {
  color: var(--night);
  border-color: var(--ice);
}

/* ---------- canvas + CSS2D layer ---------- */

#worldWrap {
  position: fixed;
  inset: 0;
  opacity: 0;
  transition: opacity 0.18s ease;
}
body.world-painted #worldWrap { opacity: 1; }
#gl { width: 100%; height: 100%; display: block; }
#gl.station-targetable { cursor: pointer; }
/* main.js toggles this on pointerdown over an exhibit; without a rule the
   press had marker feedback but no cursor feedback. */
#gl.station-pressed { cursor: grabbing; }

.labels {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.station-marker {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.62rem;
  color: rgba(232, 228, 218, 0.85);
  background: rgba(9, 12, 16, 0.62);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.65rem 0.2rem 0.28rem;
  white-space: nowrap;
  backdrop-filter: blur(4px);
  pointer-events: auto;         /* clickable: rail-travels to the station */
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, opacity 0.18s, transform 0.18s;
  font-family: inherit;
  appearance: none;
}

.station-marker:hover {
  border-color: var(--amber);
  background: rgba(20, 16, 8, 0.8);
}
.station-marker:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

/* Canvas raycast feedback mirrors DOM-marker hover. Avoid transform here:
   CSS2DRenderer owns the marker's inline transform every frame. */
.station-marker.targeted,
.station-marker.approaching {
  border-color: var(--amber);
  background: rgba(25, 19, 8, 0.86);
  box-shadow: 0 0 16px rgba(227, 155, 45, 0.3);
}

.station-marker.targeted .marker-num,
.station-marker.approaching .marker-num {
  box-shadow: 0 0 12px rgba(227, 155, 45, 0.72);
}

.station-marker.pressed {
  border-color: var(--ice);
  background: rgba(13, 28, 34, 0.9);
  box-shadow: inset 0 0 0 1px rgba(134, 215, 234, 0.34),
    0 0 12px rgba(134, 215, 234, 0.28);
}

.station-marker:active {
  border-color: var(--ice);
  background: rgba(13, 28, 34, 0.9);
}

.station-marker.arrived {
  border-color: var(--ice);
  background: rgba(10, 25, 31, 0.9);
  box-shadow: 0 0 var(--arrival-glow, 5px) rgba(134, 215, 234, 0.58);
}

.station-marker.arrived .marker-num {
  background: var(--ice);
  box-shadow: 0 0 var(--arrival-glow, 5px) rgba(134, 215, 234, 0.72);
}

.station-marker.faded {
  /* opacity only: CSS2DRenderer rewrites an inline `transform` every frame,
     and inline beats a class rule, so a scale here never applied. */
  opacity: 0.16;
}

.marker-num {
  font-family: "Archivo Black", "Archivo", sans-serif;
  font-size: 0.95rem;
  line-height: 1;
  color: var(--night);
  background: var(--amber);
  border-radius: 999px;
  min-width: 1.5rem;
  padding: 0.28rem 0;
  text-align: center;
}

/* ---------- intro overlay (also the status / error surface) ---------- */

#intro {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(2rem, 5vw, 6rem);
  padding: clamp(5.5rem, 10vh, 8rem) clamp(1.4rem, 7vw, 7rem) 2.5rem;
  background:
    linear-gradient(90deg, rgba(6, 9, 12, 0.96) 0%, rgba(6, 9, 12, 0.86) 34%, rgba(6, 9, 12, 0.22) 66%, transparent 100%),
    linear-gradient(0deg, rgba(6, 9, 12, 0.45), transparent 48%);
  transition: opacity 0.7s ease, visibility 0.7s;
}

#intro.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.intro-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: min(44rem, 52vw);
  max-width: 44rem;
  min-width: 0;
  text-align: left;
}

.intro-eyebrow {
  font-size: 0.7rem;
  color: var(--ice);
  margin-bottom: 1rem;
}

#intro h1 {
  font-family: "Archivo Black", "Archivo", sans-serif;
  font-size: clamp(2.6rem, 8vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--paper);
  text-shadow: 0 0 60px rgba(227, 155, 45, 0.25);
  margin-bottom: 1rem;
  text-wrap: balance;
}

#intro h1 em { font-style: normal; color: var(--amber); }

.intro-paper-title {
  max-width: 42rem;
  color: var(--paper);
  font-size: clamp(1rem, 1.55vw, 1.35rem);
  font-weight: 650;
  line-height: 1.25;
  margin-bottom: 0.55rem;
  text-wrap: balance;
}

.intro-authors {
  color: rgba(232, 228, 218, 0.7);
  font-size: 0.78rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.intro-sub {
  max-width: 38rem;
  color: #c8ccd2;
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 0.85rem;
  text-wrap: pretty;
}

.intro-evidence {
  color: var(--amber);
  font-size: 0.64rem;
  line-height: 1.6;
  margin-bottom: 0.65rem;
}

#introStatus {
  min-height: 1.8rem;
  font-size: 0.68rem;
  line-height: 1.7;
  color: var(--dim);
  white-space: pre-line;
}

.intro-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0.35rem;
}

#btnEnter,
#btnExplore,
#btnAutoTourIntro {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  border-radius: 999px;
  padding: 0.82rem 1.5rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.3s;
}

#btnExplore {
  color: var(--night);
  background: var(--amber);
  border: 1px solid var(--amber);
  box-shadow: 0 0 30px rgba(227, 155, 45, 0.35);
}

#btnExplore:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 0 44px rgba(227, 155, 45, 0.5); }
#btnExplore:active:not(:disabled) { transform: translateY(0) scale(0.98); box-shadow: 0 0 22px rgba(227, 155, 45, 0.38); }
#btnEnter:disabled,
#btnExplore:disabled,
#btnAutoTourIntro:disabled { opacity: 0.35; cursor: wait; box-shadow: none; }

#btnEnter,
#btnAutoTourIntro {
  color: var(--paper);
  background: rgba(9, 12, 16, 0.45);
  border: 1px solid rgba(232, 228, 218, 0.34);
}
#btnEnter:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--ice);
  color: var(--ice);
}
#btnAutoTourIntro { border-color: rgba(134, 215, 234, 0.44); color: var(--ice); }
#btnAutoTourIntro:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--amber);
  color: var(--amber);
}
#btnEnter:active:not(:disabled) { transform: translateY(0) scale(0.98); }

.intro-paper-link {
  margin-top: 0.85rem;
  color: rgba(232, 228, 218, 0.76);
  font-size: 0.62rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 228, 218, 0.26);
  padding-bottom: 0.16rem;
}
.intro-paper-link:hover { color: var(--ice); border-color: var(--ice); }

.intro-hint {
  margin-top: 0.8rem;
  font-size: 0.58rem;
  line-height: 1.6;
  color: rgba(139, 149, 160, 0.72);
}
.intro-hint--touch { display: none; }

/* A terse three-beat field guide beside the poster-like intro. It shares the
   opening surface instead of interrupting the live world with another modal. */
.opening-guide {
  width: min(23rem, 31vw);
  flex: 0 0 auto;
  align-self: center;
  padding: 1.15rem 0 1rem;
  border-top: 1px solid rgba(134, 215, 234, 0.44);
  border-bottom: 1px solid rgba(232, 228, 218, 0.18);
  background: linear-gradient(90deg, rgba(9, 12, 16, 0.76), rgba(9, 12, 16, 0.3));
  backdrop-filter: blur(8px);
}

.opening-guide__header,
.opening-guide__actions {
  display: flex;
  align-items: center;
  padding-inline: 0.9rem;
}

.opening-guide__header { justify-content: space-between; gap: 1rem; }
.opening-guide__eyebrow,
.opening-guide__count,
.opening-guide__index {
  color: var(--ice);
  font-size: 0.58rem;
  line-height: 1.45;
}

.opening-guide__count { color: var(--paper); white-space: nowrap; }
.opening-guide__count span { color: var(--amber); }

.opening-guide__track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.35rem;
  margin: 0.7rem 0.9rem 1.3rem;
}

.opening-guide__track span {
  height: 2px;
  background: rgba(232, 228, 218, 0.16);
  transition: background 0.22s ease, box-shadow 0.22s ease;
}

.opening-guide__track span.active {
  background: var(--amber);
  box-shadow: 0 0 12px rgba(227, 155, 45, 0.48);
}

.opening-guide__panels {
  min-height: 12.5rem;
  padding-inline: 0.9rem;
}

.opening-guide__panel[hidden] { display: none !important; }
.opening-guide__panel:not([hidden]) { animation: guide-panel-in 0.3s ease both; }
.opening-guide__panel h2 {
  max-width: 18rem;
  margin: 0.55rem 0 0.7rem;
  color: var(--paper);
  font-family: "Archivo Black", "Archivo", sans-serif;
  font-size: clamp(1.2rem, 1.8vw, 1.65rem);
  line-height: 1.04;
}

.opening-guide__panel > p:last-child {
  color: rgba(200, 204, 210, 0.9);
  font-size: 0.78rem;
  line-height: 1.58;
}

.opening-guide__keys {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.42rem 0.8rem;
  margin-top: 0.9rem;
}

.opening-guide__keys div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.65rem;
  padding-bottom: 0.24rem;
  border-bottom: 1px solid rgba(232, 228, 218, 0.14);
}

.opening-guide__keys dt { color: var(--amber); font-size: 0.58rem; }
.opening-guide__keys dd { color: var(--dim); font-size: 0.52rem; }

.opening-guide__actions {
  flex-wrap: wrap;
  gap: 0.48rem;
  margin-top: 1rem;
}

.opening-guide__actions button {
  border: 1px solid rgba(232, 228, 218, 0.24);
  border-radius: 999px;
  padding: 0.55rem 0.72rem;
  font-size: 0.56rem;
  cursor: pointer;
  transition: color 0.16s ease, border-color 0.16s ease,
    background 0.16s ease, transform 0.16s ease;
}
.opening-guide__actions button:disabled { opacity: 0.35; cursor: wait; }

.opening-guide__back { color: var(--dim); background: transparent; }
.opening-guide__back:disabled { cursor: default; }
.opening-guide__next {
  color: var(--night);
  background: var(--amber);
  border-color: var(--amber) !important;
}
.opening-guide__skip {
  flex-basis: 100%;
  width: max-content;
  color: rgba(232, 228, 218, 0.62);
  background: transparent;
  border-color: transparent !important;
  text-align: left;
}

.opening-guide__actions button:hover:not(:disabled) { border-color: var(--ice); color: var(--ice); }
.opening-guide__next:hover:not(:disabled) { color: var(--night) !important; background: var(--ice); }
.opening-guide__actions button:active:not(:disabled) { transform: scale(0.97); }
.opening-guide__actions button:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

@keyframes guide-panel-in {
  from { opacity: 0; transform: translateX(10px); }
  to { opacity: 1; transform: translateX(0); }
}

/* One world-edge question, not another dashboard panel. It changes at every
   station so the reader always knows what this exhibit is evidence for. */
.research-guide {
  position: fixed;
  top: 76px;
  left: 18px;
  z-index: 30;
  width: min(390px, calc(100vw - 380px));
  padding-left: 0.85rem;
  border-left: 2px solid var(--amber);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 0.35s, transform 0.35s;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.9);
}
.research-guide.show { opacity: 1; transform: translateY(0); }
/* Still not a dashboard panel — a scrim, not a card. The exhibits' own canvas
   boards are bright white text on black, and at several stations one lands
   directly behind this question; a text-shadow alone loses that fight. The
   gradient fades to nothing before its right edge, so the pasture still shows
   through and the guide keeps reading as part of the world. */
.research-guide::before {
  content: "";
  position: absolute;
  inset: -0.7rem -3rem -0.9rem -1.4rem;
  background: radial-gradient(115% 100% at 0% 50%,
    rgba(8, 11, 15, 0.86), rgba(8, 11, 15, 0) 76%);
  z-index: -1;
  pointer-events: none;
}
.research-guide__eyebrow {
  color: var(--ice);
  font-size: 0.56rem;
  margin-bottom: 0.32rem;
}
.research-guide__question {
  color: var(--paper);
  font-family: "Archivo", system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.2;
}
.research-guide__proof {
  margin-top: 0.3rem;
  color: rgba(200, 204, 210, 0.82);
  font-size: 0.58rem;
  line-height: 1.45;
}

/* One-shot controls reminder after the visitor commits to an entry mode. It
   stays below the research question, then leaves the scene chrome alone. */
.entry-toast {
  position: fixed;
  top: 172px;
  left: 18px;
  z-index: 44;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  width: min(440px, calc(100vw - 36px));
  padding: 0.85rem 0.9rem 0.78rem 1rem;
  color: var(--paper);
  background: rgba(9, 12, 16, 0.72);
  border: 1px solid rgba(134, 215, 234, 0.32);
  border-left: 2px solid var(--ice);
  border-radius: 10px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  opacity: 0;
  transform: translateY(-7px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.entry-toast.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.entry-toast > div { flex: 1; min-width: 0; }
.entry-toast__eyebrow { color: var(--amber); font-size: 0.58rem; }
.entry-toast__body {
  margin-top: 0.38rem;
  color: rgba(232, 228, 218, 0.9);
  font-size: 0.78rem;
  line-height: 1.5;
}
.entry-toast__keys {
  margin-top: 0.55rem;
  color: var(--ice);
  font-size: 0.54rem;
  line-height: 1.45;
}
.entry-toast button {
  flex: 0 0 auto;
  width: 1.8rem;
  height: 1.8rem;
  padding: 0;
  border: 1px solid rgba(232, 228, 218, 0.22);
  border-radius: 50%;
  color: var(--dim);
  background: rgba(9, 12, 16, 0.35);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}
.entry-toast button:hover { color: var(--paper); border-color: var(--ice); }
.entry-toast button:focus-visible { outline: 2px solid var(--ice); outline-offset: 2px; }

/* ---------- HUD chrome ---------- */

.station-chip {
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 30;
  font-size: 0.68rem;
  color: var(--amber);
  background: rgba(9, 12, 16, 0.72);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  opacity: 0;
  transition: opacity 0.4s;
  cursor: pointer;
}
.station-chip.show { opacity: 1; }
.station-chip:focus-visible { outline: 2px solid var(--ice); outline-offset: 3px; }
.station-chip[aria-expanded="true"] { border-color: rgba(134, 215, 234, 0.46); }

.dock {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  width: max-content;
  max-width: calc(100vw - 36px);
  padding: 0.34rem 0.5rem;
  border-radius: 999px;
  background: rgba(13, 16, 20, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.dock button {
  flex: 0 0 auto;
  cursor: pointer;
  background: transparent;
  color: var(--dim);
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.66rem;
  min-width: 2.5rem;
  min-height: 2.5rem;
  padding: 0.42rem 0.62rem;
  white-space: nowrap;
  transition: color 0.18s, border-color 0.18s, background 0.18s, transform 0.12s ease;
}

.dock button:hover { color: #fff; border-color: rgba(134, 215, 234, 0.5); }
.dock button:active { transform: scale(0.94); }

/* ---------- fullscreen toggle ---------- */
/* Fixed to the top-right corner, clear of the station panel (top: 72px) and of
   the centered page nav. It stays outside .dock on purpose: the dock is
   trimmed to AUTO EN during the narrated tour and hidden outright in Gaming
   mode, where race.css re-anchors this button instead (the race clock,
   minimap and item bar own the right edge). */
.fullscreen-btn {
  position: fixed;
  top: 16px;
  right: 18px;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  padding: 0;
  cursor: pointer;
  color: var(--dim);
  background: rgba(13, 16, 20, 0.72);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: color 0.18s, border-color 0.18s, background 0.18s, transform 0.12s ease;
}

/* display:flex above would beat the UA's [hidden] rule — fullscreen.js hides
   the button with that attribute when the browser has no element API */
.fullscreen-btn[hidden] { display: none !important; }
.fullscreen-btn:hover { color: #fff; border-color: rgba(134, 215, 234, 0.5); }
.fullscreen-btn:active { transform: scale(0.94); }
.fullscreen-btn:focus-visible { outline: 2px solid var(--ice); outline-offset: 3px; }
.fullscreen-btn[aria-pressed="true"] { color: var(--ice); border-color: rgba(134, 215, 234, 0.46); }

.fullscreen-btn__icon {
  width: 1.05rem;
  height: 1.05rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* swapped by state, not by :fullscreen — the prefixed Safari spelling never
   matches that pseudo-class, and fullscreenchange already syncs the attribute */
.fullscreen-btn__icon--exit { display: none; }
.fullscreen-btn[aria-pressed="true"] .fullscreen-btn__icon--enter { display: none; }
.fullscreen-btn[aria-pressed="true"] .fullscreen-btn__icon--exit { display: block; }

/* Once the presentation is running the toggle steps out of the frame on
   pointer devices: Esc and V both leave fullscreen and the browser shows its
   own exit hint, so a floating control is only clutter over the exhibit. Touch
   devices keep it — with no Esc key it is the way back. */
@media (hover: hover) and (pointer: fine) {
  .fullscreen-btn[aria-pressed="true"] { display: none; }
  html.is-presenting .hint--desktop { display: none; }
  html.is-presenting .hint--presenting { display: block; }
}
/* the way out, shown only while presenting on those same devices */
.hint--presenting { display: none; }

.dot.active {
  color: var(--night);
  background: var(--amber);
  border-color: var(--amber);
  font-weight: 700;
}

.hint {
  position: fixed;
  right: 18px;
  /* clears the dock: the two only miss each other past ~1720px wide, so at
     bottom: 18px this legend sat on top of dots 06-08 and 🐮 — and, being a
     real element, swallowed their clicks */
  bottom: 78px;
  z-index: 30;
  pointer-events: none;
  font-size: 0.6rem;
  color: rgba(139, 149, 160, 0.75);
  background: rgba(9, 12, 16, 0.6);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
}

/* the keyboard legend is the only one a pointer user needs — the touch copy
   surfaces solely in the ≤640px roam block below */
.hint--touch { display: none; }

/* ---------- station side panel ---------- */

#stationPanel {
  position: fixed;
  top: 72px;
  right: 18px;
  z-index: 30;
  width: min(300px, calc(100vw - 36px));
  max-height: min(58svh, 520px);
  overflow-y: auto;
  padding: 1.15rem 1.15rem 1.3rem;
  border-radius: 14px;
  background: rgba(11, 14, 18, 0.84);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  overscroll-behavior: contain;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(calc(100% + 26px));
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

#stationPanel.open {
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
}

.panel-close {
  position: sticky;
  top: 0;
  z-index: 2;
  float: right;
  width: 2rem;
  height: 2rem;
  margin: -0.35rem -0.35rem 0.25rem 0.5rem;
  border: 1px solid rgba(232, 228, 218, 0.22);
  border-radius: 50%;
  color: var(--dim);
  background: rgba(9, 12, 16, 0.78);
  cursor: pointer;
}
.panel-close:hover { color: var(--paper); border-color: var(--ice); }
.panel-close:focus-visible { outline: 2px solid var(--ice); outline-offset: 2px; }

.panel-kicker { font-size: 0.62rem; color: var(--ice); margin-bottom: 0.55rem; }

.panel-scope {
  display: inline-block;
  margin-bottom: 0.55rem;
  padding: 0.2rem 0.42rem;
  border: 1px solid rgba(134, 215, 234, 0.34);
  border-radius: 999px;
  color: rgba(134, 215, 234, 0.9);
  font-size: 0.58rem;
  line-height: 1.3;
}

#stationPanel h2 {
  font-family: "Archivo Black", "Archivo", sans-serif;
  font-size: 1.35rem;
  line-height: 1.1;
  margin-bottom: 0.6rem;
  text-wrap: balance;
}

.panel-body {
  max-width: 42ch;
  font-size: 0.82rem;
  line-height: 1.55;
  color: #c8ccd2;
  margin-bottom: 0.8rem;
}

.panel-try {
  margin: 0 0 0.7rem;
  color: var(--paper);
  font-size: 0.76rem;
  line-height: 1.45;
}
.panel-try span {
  color: var(--amber);
  font-size: 0.56rem;
  margin-right: 0.35rem;
}

.chip-row { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.8rem; }

.chip {
  font-size: 0.58rem;
  color: var(--amber);
  border: 1px solid rgba(227, 155, 45, 0.4);
  border-radius: 999px;
  padding: 0.22rem 0.5rem;
  white-space: normal;
  max-width: 100%;
  overflow-wrap: anywhere;
}

/* clickable feature-family chips (FEATURES station) */
.chip-btn {
  background: transparent;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, color 0.18s;
}

.chip-btn:hover {
  border-color: var(--ice);
  color: var(--ice);
  background: rgba(134, 215, 234, 0.08);
}
.chip-btn:active { transform: scale(0.97); }

.chip-btn.active {
  color: var(--night);
  background: var(--amber);
  border-color: var(--amber);
  font-weight: 700;
}

.panel-fig {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--line);
  margin-bottom: 0.7rem;
  background: #0c0f13;
}

/* pipeline intro rows (overview panel) */
.pipe-rows { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.9rem; }

.pipe-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-align: left;
  font-size: 0.66rem;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}

.pipe-row:hover { border-color: var(--ice); background: rgba(134, 215, 234, 0.08); }
.pipe-row:active { transform: scale(0.985); background: rgba(134, 215, 234, 0.13); }

.pipe-num {
  flex: none;
  font-family: "Archivo Black", "Archivo", sans-serif;
  font-size: 0.85rem;
  color: var(--amber);
  min-width: 1.1rem;
  text-align: center;
}

#btnStartTour {
  width: 100%;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--night);
  background: var(--amber);
  border: none;
  border-radius: 999px;
  padding: 0.65rem 1rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

#btnStartTour:hover { transform: translateY(-1px); box-shadow: 0 0 26px rgba(227, 155, 45, 0.45); }
#btnStartTour:active { transform: translateY(0) scale(0.985); box-shadow: 0 0 15px rgba(227, 155, 45, 0.34); }

.panel-links { display: flex; flex-direction: column; gap: 0.4rem; }

.panel-link {
  font-size: 0.66rem;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}

.panel-link:hover {
  color: var(--night);
  background: var(--amber);
  border-color: var(--amber);
}
.panel-link:active { filter: brightness(0.88); }

/* ---------- roam mode: calf speech bubble, camera flash, dock toggle ---------- */

.cow-bubble {
  max-width: 250px;
  font-size: 0.63rem;
  line-height: 1.5;
  text-align: center;
  color: var(--paper);
  background: rgba(9, 12, 16, 0.42);
  border: 1px solid rgba(227, 155, 45, 0.26);
  border-radius: 12px;
  padding: 0.45rem 0.65rem;
  white-space: normal;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.95), 0 0 8px rgba(0, 0, 0, 0.75);
  /* CSS2DRenderer writes an inline transform every frame — animate opacity only */
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.cow-bubble.show { opacity: 1; }

.cow-bubble::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 10px;
  height: 10px;
  transform: translateX(-50%) rotate(45deg);
  background: rgba(9, 12, 16, 0.42);
  border-right: 1px solid rgba(227, 155, 45, 0.26);
  border-bottom: 1px solid rgba(227, 155, 45, 0.26);
}

/* S1 easter egg: three synced "camera" flashes */
#roamFlash {
  position: fixed;
  inset: 0;
  z-index: 44;
  background: #fff;
  opacity: 0;
  pointer-events: none;
}

#roamFlash.go { animation: roam-flash 0.9s ease-out; }

@keyframes roam-flash {
  0%, 17%, 34%       { opacity: 0; }
  6%, 23%, 40%       { opacity: 0.85; }
  50%, 100%          { opacity: 0; }
}

#btnRoam { font-size: 0.98rem; }

#btnRoam.active {
  color: var(--night);
  background: var(--amber);
  border-color: var(--amber);
}

@media (prefers-reduced-motion: reduce) {
  #roamFlash.go { animation: none; }
}

/* ---------- tour mode hides all chrome ---------- */

body.tour .ui,
body.tour .labels,
body.tour #stationPanel { display: none !important; }

/* ---------- reduced motion / mobile ---------- */

@media (prefers-reduced-motion: reduce) {
  #intro, #stationPanel, .station-chip, .entry-toast, .opening-guide__track span { transition: none; }
  .opening-guide__panel:not([hidden]) { animation: none; }
  .dock button, .chip-btn, .pipe-row, #btnStartTour, .fullscreen-btn { transition: none; }
}

@media (max-width: 900px) {
  #intro {
    display: block;
    align-items: flex-start;
    overflow-y: auto;
  }
  .intro-copy { width: 100%; }
  .opening-guide {
    width: 100%;
    max-width: 38rem;
    margin-top: 1.5rem;
  }
  .opening-guide__panels { min-height: 9.5rem; }
}

@media (max-width: 640px) {
  body .global-nav--overlay {
    top: 8px;
    width: calc(100vw - 16px);
    max-width: none;
    flex-wrap: nowrap;
    gap: 0.15rem;
    padding: 0.12rem 0.28rem;
  }
  body .global-nav--overlay .global-nav__brand { display: none; }
  body .global-nav--overlay .global-nav__link {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 auto;
    min-height: 2.75rem;
    padding: 0.3rem 0.18rem;
    text-align: center;
    font-size: clamp(0.56rem, 2.25vw, 0.62rem);
  }

  #intro {
    align-items: flex-start;
    overflow-y: auto;
    padding: 4.8rem 1.15rem 1.2rem;
    background:
      linear-gradient(0deg, rgba(6, 9, 12, 0.98) 0%, rgba(6, 9, 12, 0.84) 54%, rgba(6, 9, 12, 0.16) 100%);
  }
  .intro-copy { width: 100%; }
  #intro h1 {
    max-width: 100%;
    font-size: clamp(2.35rem, 12.5vw, 3.2rem);
    letter-spacing: 0;
    margin-bottom: 0.65rem;
  }
  .intro-paper-title { font-size: 0.92rem; }
  .intro-authors { font-size: 0.68rem; margin-bottom: 0.65rem; }
  .intro-sub { font-size: 0.8rem; line-height: 1.45; margin-bottom: 0.55rem; }
  .intro-evidence { font-size: 0.62rem; margin-bottom: 0.35rem; }
  #introStatus { min-height: 1.3rem; font-size: 0.56rem; }
  .intro-actions { width: 100%; gap: 0.5rem; }
  #btnEnter, #btnExplore, #btnAutoTourIntro {
    flex: 1 1 auto;
    min-height: 2.75rem;
    font-size: 0.62rem;
    padding: 0.72rem 0.8rem;
  }
  .intro-hint--desktop { display: none; }
  .intro-hint--touch { display: block; }
  .opening-guide__panels { min-height: 0; }

  .research-guide {
    top: 102px;
    left: 12px;
    right: 12px;
    width: auto;
    padding: 0.5rem 0.65rem;
    border-left: 2px solid var(--amber);
    background: linear-gradient(90deg, rgba(9, 12, 16, 0.82), rgba(9, 12, 16, 0.18));
  }
  .research-guide__question { font-size: 0.8rem; }
  .research-guide__proof { display: none; }

  .entry-toast {
    top: 166px;
    left: 12px;
    width: calc(100vw - 24px);
  }
  .entry-toast__body { font-size: 0.72rem; }
  .entry-toast__keys { font-size: 0.5rem; }

  .panel-scope { font-size: 0.62rem; }

  #stationPanel {
    top: auto;
    right: 0;
    left: 0;
    bottom: 78px;
    width: 100%;
    max-height: 32svh;
    padding: 0.95rem 1rem 1.05rem;
    border-radius: 14px 14px 0 0;
    transform: translateY(calc(100% + 84px));
  }
  #stationPanel.open { transform: translateY(0); }
  .panel-close { width: 2.75rem; height: 2.75rem; }
  .hint { display: none; }
  /* One-line navigation leaves a stable second row for the station toggle. */
  .station-chip { bottom: auto; top: 62px; min-height: 2rem; }

  /* The final mobile invariant below lays out arrows, station dots, roam, and
     the optional auto-tour control without allowing a narrow viewport to
     collapse the dock into a clipped column. */
  .dock { bottom: 10px; gap: 0.18rem; padding: 0.35rem 0.38rem; }
  #dots { display: flex; gap: 0.12rem; }
  .dock button { min-width: 1.8rem; min-height: 2.75rem; padding: 0.42rem 0.12rem; }
  #btnRoam { min-width: 2.75rem; }

  /* roam is unplayable without a legend, and the keyboard one above is hidden
     here — give touch its own copy, parked below the chip so neither the
     wrapped nav nor the bottom sheet can bury it */
  body.roaming .hint--touch {
    display: block;
    right: 12px;
    left: 12px;
    bottom: auto;
    top: 102px;
    text-align: center;
    /* one line at 390px, and opaque enough to stay legible over the bright
       pasture and the station markers it floats above */
    font-size: 0.55rem;
    padding: 0.42rem 0.7rem;
    color: rgba(200, 206, 214, 0.92);
    background: rgba(9, 12, 16, 0.8);
  }

  /* The calf bubble and touch legend coach roam on phones. Keeping the
     station research guide at the same top edge creates a three-layer HUD. */
  body.roaming .research-guide { display: none; }
}

/* ---------- pipeline handoff chrome (travel caption · IN/OUT · dot links) ---------- */

/* Deliberately not `.ui`: the tour hides all chrome except this narration. */
.travel-caption {
  position: fixed;
  top: 62px;                /* below the global-nav pill (top: 12px) */
  left: 50%;
  transform: translateX(-50%);
  z-index: 55;              /* under the nav (60), over the canvas */
  max-width: min(92vw, 620px);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--amber);
  background: rgba(9, 12, 16, 0.72);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.42rem 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
}
.travel-caption.show { opacity: 1; }

/* panel footer: the station's place in the dataflow, both ends clickable */
.io-footer {
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.io-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  background: transparent;
  border: 0;
  padding: 0.1rem 0;
  font: 500 0.64rem 'IBM Plex Mono', monospace;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-align: left;
  color: var(--dim);
  cursor: pointer;
  transition: color 0.18s;
}
button.io-row:hover { color: #fff; }
button.io-row:active { color: var(--amber); }
.io-row--end { cursor: default; }
.io-tag { color: var(--ice); min-width: 2.2em; }
.io-arrow { color: var(--amber); }

/* thin connectors between the dock dots — one per pipeline leg.
   #dots needs flex here: the links are empty spans and only render as lines
   in a flex row (the phone block below hides them and keeps the old dock). */
#dots { display: inline-flex; align-items: center; gap: 0.25rem; }
.dot-link {
  flex: 0 0 auto;
  width: 0.55rem;
  height: 1px;
  background: var(--line);
  transition: background 0.25s, box-shadow 0.25s;
}
.dot-link.active {
  background: var(--amber);
  box-shadow: 0 0 6px rgba(227, 155, 45, 0.8);
}

/* the tour rides the world clock — a seek-and-capture recorder must not
   race a wall-clock fade, so the caption snaps in tour mode */
body.tour .travel-caption { transition: none; }

/* ---------- calf-guided evidence cargo ---------- */

.carry-status {
  position: fixed;
  left: 18px;
  bottom: 82px;
  z-index: 43;
  display: flex;
  align-items: center;
  gap: 0.62rem;
  min-width: 238px;
  padding: 0.58rem 0.76rem;
  color: var(--ice);
  background: rgba(9, 12, 16, 0.78);
  border: 1px solid rgba(134, 215, 234, 0.26);
  border-radius: 8px;
  overflow: hidden;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.24s ease, transform 0.32s cubic-bezier(.2,.8,.2,1),
    border-color 0.2s ease;
}
.carry-status.show { opacity: 1; transform: translateY(0); }
.carry-status.processing { border-color: rgba(227, 155, 45, 0.72); }
.carry-status.deposit { background: rgba(20, 16, 8, 0.82); }
.carry-status.waiting { border-color: rgba(227, 155, 45, 0.5); }
.carry-status.pickup { border-color: rgba(134, 215, 234, 0.8); }
.carry-status.confirmed {
  border-color: rgba(134, 215, 234, 0.92);
  box-shadow: 0 0 18px rgba(134, 215, 234, 0.2);
}
.carry-status.rejected {
  border-color: rgba(227, 155, 45, 0.92);
  animation: carry-reject 0.18s ease-in-out 2;
}
.carry-status::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 -42%;
  width: 34%;
  pointer-events: none;
  opacity: 0;
  transform: skewX(-18deg);
  background: linear-gradient(90deg, transparent, rgba(134, 215, 234, 0.32), transparent);
}
.carry-status.confirmed::after { animation: carry-confirm-sweep 0.62s ease-out both; }
.carry-status__mark {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border: 2px solid var(--ice);
  transform: rotate(45deg);
  box-shadow: 0 0 10px rgba(134, 215, 234, 0.55);
  transition: border-color 0.18s ease, background 0.18s ease,
    transform 0.18s ease, box-shadow 0.18s ease;
}
.carry-status.processing .carry-status__mark {
  border-color: var(--amber);
  animation: carry-spin 0.72s linear infinite;
  box-shadow: 0 0 13px rgba(227, 155, 45, 0.72);
}
.carry-status.pickup .carry-status__mark {
  border-color: var(--ice);
  animation: carry-pickup 0.56s ease-in-out infinite alternate;
  box-shadow: 0 0 15px rgba(134, 215, 234, 0.78);
}
.carry-status.confirmed .carry-status__mark {
  position: relative;
  border-color: var(--ice);
  background: var(--ice);
  transform: rotate(0) scale(1.08);
  animation: carry-confirm 0.36s cubic-bezier(.2,.9,.25,1.25) both;
  box-shadow: 0 0 16px rgba(134, 215, 234, 0.8);
}
.carry-status.confirmed .carry-status__mark::after {
  content: "✓";
  position: absolute;
  left: 50%;
  top: 50%;
  color: var(--night);
  font: 700 9px/1 system-ui, sans-serif;
  transform: translate(-50%, -52%);
}
.carry-status.rejected .carry-status__mark {
  border-color: var(--amber);
  box-shadow: 0 0 12px rgba(227, 155, 45, 0.7);
}
.carry-status__copy { display: grid; gap: 0.12rem; }
.carry-status strong {
  color: #edf3f5;
  font-size: 0.65rem;
  letter-spacing: 0.075em;
  font-weight: 500;
}
.carry-status small {
  color: var(--dim);
  font-size: 0.52rem;
  letter-spacing: 0.07em;
}
@keyframes carry-spin { to { transform: rotate(405deg); } }
@keyframes carry-pickup {
  from { transform: rotate(45deg) scale(0.9); }
  to { transform: rotate(135deg) scale(1.08); }
}
@keyframes carry-confirm {
  from { transform: rotate(0) scale(0.62); }
  to { transform: rotate(0) scale(1.08); }
}
@keyframes carry-confirm-sweep {
  0% { left: -42%; opacity: 0; }
  18% { opacity: 1; }
  100% { left: 112%; opacity: 0; }
}
@keyframes carry-reject {
  from { box-shadow: 0 0 0 rgba(227, 155, 45, 0); }
  to { box-shadow: 0 0 14px rgba(227, 155, 45, 0.34); }
}

@media (prefers-reduced-motion: reduce) {
  .travel-caption { transition: none; }
  .carry-status { transition: none; }
  .carry-status,
  .carry-status::after,
  .carry-status .carry-status__mark { animation: none !important; }
}
@media (max-width: 640px) {
  /* dock invariant (see ~line 455): ≤372px on a phone. The eight leg links
     would push it to ~440px and shove 🐮 off a 390px screen, so they are
     desktop-only — the ground chevrons and the caption still carry the leg. */
  .dot-link { display: none; }
  /* below the wrapped nav (bottom ~110px) and the relocated chip (top 118),
     wrapping to two lines instead of clipping a 60-char caption */
  .travel-caption {
    top: 156px;
    font-size: 0.58rem;
    max-width: 94vw;
    white-space: normal;
    line-height: 1.6;
    border-radius: 14px;
    text-overflow: clip;
  }
  .carry-status {
    left: 10px;
    bottom: 116px;
    min-width: 0;
    max-width: calc(100vw - 20px);
    padding: 0.48rem 0.62rem;
  }
}
@media (max-width: 380px) {
  /* 360-class phones: the 640px tier still leaves the dock at its historical
     372px (12 × 2rem buttons + gaps) — one more notch keeps 🐮 on-screen */
  .dock { gap: 0.15rem; padding: 0.3rem 0.3rem; }
  .dock button { min-width: 1.6rem; padding: 0.38rem 0.1rem; }
}

/* ---------- research tier-1: step scrubber · source crumbs · visited dots ---------- */

/* RECON REPLAY scrubber (stations 03/04, desktop dwell only). .ui on purpose:
   the ?tour=1 recorder must stay pure autoplay, and body.tour hides .ui. */
.step-scrubber {
  position: fixed;
  left: 50%;
  bottom: 128px;            /* clear of the dock pill AND the hint row */
  transform: translateX(-50%);
  z-index: 45;
  display: none;
  align-items: center;
  gap: 0.55rem;
  width: min(44vw, 440px);
  padding: 0.34rem 0.75rem;
  background: rgba(9, 12, 16, 0.72);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.58rem;
  letter-spacing: 0.07em;
  color: var(--dim);
}
.step-scrubber.show { display: flex; }
.scrub-play {
  background: transparent;
  border: 0;
  padding: 0 0.1rem;
  color: var(--ice);
  font: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  line-height: 1;
}
.scrub-play:hover { color: #fff; }
.scrub-play:active:not(:disabled) { transform: scale(0.9); }
.scrub-play:disabled { color: #6d747b; cursor: wait; }
.step-scrubber.is-loading .scrub-track { cursor: wait; opacity: 0.5; }
.scrub-tag { color: var(--amber); white-space: nowrap; }
.scrub-track {
  position: relative;
  flex: 1 1 auto;
  height: 14px;
  cursor: pointer;
  touch-action: none;
}
.scrub-track::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 3px;
  transform: translateY(-50%);
  background: var(--line);
  border-radius: 2px;
}
.scrub-tick {
  position: absolute;
  top: 50%;
  width: 1px;
  height: 7px;
  transform: translate(-50%, -50%);
  background: rgba(134, 215, 234, 0.4);
}
.scrub-tick--stage {
  height: 11px;
  width: 2px;
  background: var(--amber);
}
.scrub-head {
  position: absolute;
  top: 50%;
  left: 0;
  width: 9px;
  height: 9px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 6px rgba(227, 155, 45, 0.7);
  pointer-events: none;
}
.scrub-label { white-space: nowrap; min-width: 7.5em; text-align: right; color: var(--ice); }

/* the subject's three source views, pinned atop every station panel */
.crumb-strip {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  width: 100%;
  margin: 0 0 0.75rem;
  padding: 0.3rem 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.2s;
}
.crumb-strip--hot { opacity: 0.92; }
.crumb-strip:hover { opacity: 1; }
.crumb-strip:active { opacity: 0.78; }
.crumb-strip img {
  width: 44px;
  height: 30px;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--line);
}
.crumb-label {
  font: 500 0.56rem 'IBM Plex Mono', monospace;
  letter-spacing: 0.08em;
  color: var(--dim);
  margin-right: 0.25rem;
}

/* pipeline progress: visited stations fill in, walked legs solidify */
#dots .dot { opacity: 0.62; }
#dots .dot.visited:not(.active) { opacity: 1; border-color: rgba(227, 155, 45, 0.45); }
#dots .dot.active { opacity: 1; }
.dot-link.solid:not(.active) { background: rgba(227, 155, 45, 0.4); }

/* ≤1136px: the centered pill starts colliding with the right-side station
   panel once the panel's max-height clips it downward (1024×768 booth
   machines ate clicks at the overlap) — anchor it left of the panel */
@media (max-width: 1136px) {
  .step-scrubber { left: 18px; right: 366px; transform: none; width: auto; max-width: 440px; }
}

@media (max-width: 640px) {
  /* phones keep the auto loop — the dock and caption own this space */
  .step-scrubber { display: none !important; }
  .crumb-strip img { width: 36px; height: 25px; }
}

/* ---------- interruptible automatic field tour ---------- */

/* A single narration edge for the moving world: substantial enough to carry
   the paper story, translucent enough to keep the animal and exhibits live. */
.auto-tour-hud {
  --tour-progress: 0%;
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 52;
  width: min(620px, calc(100vw - 170px));
  padding: 1rem 1.08rem 0.9rem 1.18rem;
  border-left: 2px solid var(--amber);
  border-top: 1px solid rgba(232, 228, 218, 0.14);
  color: var(--paper);
  background:
    linear-gradient(100deg, rgba(9, 12, 16, 0.97), rgba(9, 12, 16, 0.84) 78%, rgba(9, 12, 16, 0.58));
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: auto-tour-hud-in 0.34s cubic-bezier(.2,.8,.2,1) both;
}
.auto-tour-hud[hidden] { display: none; }

.auto-tour-hud__header,
.auto-tour-hud__timeline,
.auto-tour-hud__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}
.auto-tour-hud__header {
  color: var(--dim);
  font-size: 0.56rem;
  line-height: 1.4;
}
.auto-tour-hud__mode {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--ice);
}
.auto-tour-hud__mode i {
  width: 0.45rem;
  height: 0.45rem;
  border: 1px solid var(--ice);
  background: rgba(134, 215, 234, 0.42);
  transform: rotate(45deg);
  box-shadow: 0 0 10px rgba(134, 215, 234, 0.65);
}
.auto-tour-hud__step { white-space: nowrap; }
.auto-tour-hud__step strong { color: var(--amber); font-weight: 700; }

.auto-tour-hud__narration { margin-top: 0.65rem; }
.auto-tour-hud__narration h2 {
  max-width: 36rem;
  font-family: "Archivo Black", "Archivo", sans-serif;
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0;
}
.auto-tour-hud__narration p {
  max-width: 36rem;
  margin-top: 0.42rem;
  color: rgba(240, 241, 238, 0.94);
  font-size: 0.92rem;
  line-height: 1.52;
}

.auto-tour-hud__timeline {
  margin-top: 0.72rem;
  color: var(--dim);
  font-size: 0.52rem;
}
#autoTourPhase {
  min-width: 0;
  overflow: hidden;
  color: var(--amber);
  text-overflow: ellipsis;
  white-space: nowrap;
}
#autoTourTime { flex: 0 0 auto; }
.auto-tour-hud__progress {
  position: relative;
  height: 2px;
  margin-top: 0.38rem;
  overflow: hidden;
  background: rgba(232, 228, 218, 0.16);
}
.auto-tour-hud__progress span {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--tour-progress);
  background: var(--amber);
  box-shadow: 0 0 8px rgba(227, 155, 45, 0.72);
  transition: width 0.18s linear;
}

.auto-tour-hud__actions { margin-top: 0.68rem; }
.auto-tour-hud__restart {
  color: rgba(139, 149, 160, 0.9);
  font-size: 0.5rem;
  white-space: nowrap;
}
.auto-tour-hud__restart kbd {
  display: inline-grid;
  place-items: center;
  min-width: 1.4rem;
  min-height: 1.4rem;
  margin-left: 0.2rem;
  padding-inline: 0.25rem;
  border: 1px solid rgba(134, 215, 234, 0.4);
  border-radius: 4px;
  color: var(--ice);
  background: rgba(9, 12, 16, 0.45);
  font: inherit;
}
.auto-tour-hud__buttons {
  display: inline-flex;
  align-items: center;
  gap: 0.48rem;
}
#autoTourTakeControl,
#autoTourVoice {
  min-height: 2.25rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--ice);
  border-radius: 999px;
  color: var(--night);
  background: var(--ice);
  font: 650 0.58rem/1 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.16s ease, background 0.16s ease, transform 0.12s ease;
}
#autoTourTakeControl:hover { color: var(--ice); background: rgba(9, 12, 16, 0.6); }
#autoTourVoice {
  min-width: 7.4rem;
  color: var(--ice);
  background: rgba(9, 12, 16, 0.64);
  border-color: rgba(134, 215, 234, 0.58);
}
#autoTourVoice[aria-pressed="true"]::before {
  content: "";
  display: inline-block;
  width: 0.42rem;
  height: 0.42rem;
  margin-right: 0.42rem;
  border-radius: 50%;
  background: var(--ice);
  box-shadow: 0 0 8px rgba(134, 215, 234, 0.78);
}
#autoTourVoice:hover:not(:disabled) { border-color: var(--amber); color: var(--amber); }
#autoTourVoice:disabled { opacity: 0.5; cursor: not-allowed; }
#autoTourTakeControl:active,
#autoTourVoice:active:not(:disabled) { transform: scale(0.97); }
#autoTourTakeControl:focus-visible,
#autoTourVoice:focus-visible,
#btnAutoTour:focus-visible,
#btnAutoTourIntro:focus-visible { outline: 2px solid var(--ice); outline-offset: 3px; }

/* Auto mode pares the manual chrome back to one restart shortcut. The module
   removes this body class on interruption, restoring the complete ranch UI. */
body.auto-tour-active :is(
  .labels, .station-chip, .carry-status, .research-guide, .entry-toast,
  #stationPanel, .hint, .travel-caption, .step-scrubber
) { display: none !important; }
body.auto-tour-active .dock {
  left: auto;
  right: 18px;
  transform: none;
  padding: 0.32rem;
}
body.auto-tour-active .dock > :not(#btnAutoTour):not(#dots) { display: none; }
#btnAutoTour {
  min-width: auto;
  padding-inline: 0.82rem;
  color: var(--ice);
  border-color: rgba(134, 215, 234, 0.45);
}
#btnAutoTour[hidden] { display: none !important; }
body.auto-tour-active #btnAutoTour {
  color: var(--night);
  background: var(--amber);
  border-color: var(--amber);
}

@keyframes auto-tour-hud-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .auto-tour-hud { animation: none; }
  .auto-tour-hud__progress span,
  #autoTourTakeControl,
  #autoTourVoice { transition: none; }
}

@media (max-width: 640px) {
  .auto-tour-hud {
    left: 10px;
    right: 10px;
    bottom: 70px;
    width: auto;
    max-height: 42svh;
    overflow-y: auto;
    padding: 0.72rem 0.78rem 0.68rem 0.88rem;
  }
  .auto-tour-hud__narration { margin-top: 0.5rem; }
  .auto-tour-hud__narration h2 { font-size: 0.92rem; }
  .auto-tour-hud__narration p { font-size: 0.8rem; line-height: 1.46; }
  .auto-tour-hud__timeline { margin-top: 0.55rem; }
  .auto-tour-hud__actions { margin-top: 0.56rem; }
  #autoTourTakeControl,
  #autoTourVoice { min-height: 2.75rem; padding-inline: 0.72rem; }
  #autoTourVoice { min-width: 6.8rem; }
  body.auto-tour-active .dock { right: 10px; bottom: 10px; }
  body.auto-tour-active #btnAutoTour { min-width: 4.5rem; padding-inline: 0.55rem; }
}

@media (max-height: 520px) and (min-width: 641px) {
  .auto-tour-hud { max-height: calc(100svh - 92px); overflow-y: auto; }
  .auto-tour-hud__narration p {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }
}

/* Final viewport invariants: keep the navigation controls inside the viewport
   even when a phone reports a narrow visual viewport or a font is still
   settling. The dock remains a compact, tappable layout rather than becoming
   a horizontally clipped pill. */
@media (prefers-reduced-motion: reduce) {
  #worldWrap { transition: none; }
}

@media (max-width: 640px) {
  .intro-sub { max-width: 34ch; }
  .intro-actions { align-items: stretch; }

  .dock {
    left: 10px;
    right: 10px;
    width: auto;
    max-width: none;
    transform: none;
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr) 2.5rem 2.7rem;
    grid-template-areas: "prev dots next roam" "tour tour tour tour";
    align-items: center;
    gap: 0.12rem;
    padding: 0.3rem;
  }
  #btnPrev { grid-area: prev; display: block; }
  #dots { grid-area: dots; }
  #btnNext { grid-area: next; display: block; }
  #btnRoam { grid-area: roam; }
  #btnAutoTour { grid-area: tour; width: 100%; min-width: 0; max-width: none; }
  #stationPanel { bottom: 112px; }
  .dock button {
    min-width: 0;
    max-width: none;
    min-height: 2.55rem;
    padding: 0.38rem 0.08rem;
  }
  #dots {
    display: flex;
    align-items: center;
    width: 100%;
    min-width: 0;
    gap: 0.08rem;
  }
  #dots .dot {
    flex: 1 1 1.28rem;
    min-width: 1.1rem;
    padding-inline: 0;
  }
  body.auto-tour-active .dock {
    left: auto;
    right: 10px;
    width: max-content;
    max-width: calc(100vw - 20px);
  }
  body.auto-tour-active #btnAutoTour { flex: 0 0 auto; max-width: none; }
}

@media (max-width: 380px) {
  .dock {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-areas: "prev next roam" "dots dots dots" "tour tour tour";
  }
  .dock button { min-width: 0; }
  #dots .dot { min-width: 1.2rem; }
  #stationPanel { bottom: 158px; }
}

/* Step navigation stays available in narrated mode on mouse and touch. */
body.auto-tour-active .auto-tour-hud { bottom: 82px; }
body.auto-tour-active .dock {
  display: flex; left: 50%; right: auto; bottom: 12px;
  transform: translateX(-50%); width: max-content; max-width: calc(100vw - 20px);
}
body.auto-tour-active #dots { display: flex; flex: 1 1 auto; width: auto; min-width: 0; }
body.auto-tour-active #dots .dot { flex: 1 1 30px; min-width: 26px; min-height: 40px; padding-inline: 3px; }
body.auto-tour-active #dots .dot-link { display: none; }
body.auto-tour-active #btnAutoTour { width: auto; }

/* ---------- fullscreen toggle on small screens ---------- */
/* Below the page nav, level with the station toggle: a phone nav pill wraps to
   two lines and spans nearly the whole width (measured 8..385 of 393 at Pixel
   5), which swallowed this button when it sat in the corner. */
@media (max-width: 640px) {
  .fullscreen-btn {
    top: calc(62px + env(safe-area-inset-top));
    right: 10px;
    width: 2.2rem;
    height: 2.2rem;
  }
}