:root {
  color-scheme: dark;
  --bg: #07090a;
  --panel: rgba(17, 21, 23, 0.82);
  --panel-strong: rgba(30, 36, 39, 0.9);
  --line: rgba(223, 234, 232, 0.16);
  --text: #eef5f2;
  --muted: #a8b6b1;
  --green: #6ddf81;
  --gold: #ffcd58;
  --cyan: #8ce8ff;
  --red: #ff6f6f;
  --observation-stroke-opacity: 0;
  --observation-corner-radius: 24px;
  --observation-edge-feather: 24px;
  --observation-edge-feather-outset: 42px;
  --observation-edge-feather-mask: 62px;
  --observation-edge-feather-opacity: 1;
  --observation-blur-radius: 7px;
  --observation-tint-rgb: 0, 0, 0;
  --observation-tint-opacity: 0.33;
  --observation-text-fade: 28px;
  --observation-text-rgb: 238, 245, 242;
  --observation-glass-opacity: 0;
  --observation-text-opacity: 0;
  --observation-spatial-opacity: 0;
  --font-ui: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-story: "EB Garamond", Garamond, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
}

button,
input,
select {
  font: inherit;
}

#app {
  position: fixed;
  inset: 0;
  min-width: 320px;
  background: #07090a;
}

#sim {
  display: block;
  width: 100vw;
  height: 100vh;
  cursor: default;
  touch-action: none;
}

#sim:active {
  cursor: default;
}

.start-screen {
  position: absolute;
  z-index: 10;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: #000;
  opacity: 1;
  pointer-events: auto;
}

.start-screen.is-running {
  pointer-events: none;
}

.start-screen.is-complete {
  visibility: hidden;
  pointer-events: none;
}

.ending-fade-overlay {
  position: absolute;
  z-index: 8;
  inset: 0;
  background: #000;
  opacity: 0;
  pointer-events: none;
}

.ending-countdown-layer {
  position: absolute;
  z-index: 9;
  inset: 0;
  opacity: 0;
  pointer-events: none;
}

.ending-countdown {
  position: absolute;
  bottom: 10px;
  color: rgba(238, 245, 242, 0.24);
  font-family: var(--font-ui);
  font-size: 0.48rem;
  font-variant-numeric: tabular-nums;
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.12);
}

.ending-countdown.left {
  left: 10px;
}

.ending-countdown.right {
  right: 10px;
}

.start-screen-copy {
  position: relative;
  width: min(720px, calc(100vw - 48px));
  height: clamp(170px, 30vh, 240px);
  text-align: center;
}

.start-screen-title,
.start-screen-intro-line {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-family: var(--font-story);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-transform: lowercase;
}

.start-screen-title {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  font-size: clamp(1.25rem, 4.6vw, 2.6rem);
  text-transform: none;
}

.start-screen-intro-line {
  position: absolute;
  top: clamp(70px, 12vh, 102px);
  right: 0;
  left: 0;
  min-height: 1.25em;
  opacity: 0;
  font-size: clamp(0.86rem, 2.5vw, 1.16rem);
}

.start-screen-intro-ellipsis {
  display: inline-flex;
  gap: 0.18em;
  margin-left: 0.24em;
}

.start-screen-intro-dot {
  opacity: 0;
}

.start-screen-action {
  position: absolute;
  top: clamp(126px, 21vh, 172px);
  right: 0;
  left: 0;
  display: grid;
  place-items: center;
  min-height: 38px;
}

.start-screen-status {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-family: var(--font-story);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: lowercase;
}

.start-screen-status,
.start-button {
  grid-area: 1 / 1;
  width: 104px;
  min-height: 38px;
}

.start-screen-status {
  display: grid;
  place-items: center;
  pointer-events: none;
}

.start-screen-status.error {
  width: min(520px, calc(100vw - 48px));
  color: var(--red);
  line-height: 1.45;
  text-align: center;
}

.start-button {
  appearance: none;
  -webkit-appearance: none;
  padding: 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
  font-family: var(--font-story);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  line-height: 1;
  opacity: 0;
  outline: none;
  pointer-events: none;
  position: relative;
  z-index: 1;
  -webkit-tap-highlight-color: transparent;
  -webkit-text-fill-color: currentColor;
  text-transform: lowercase;
}

.start-button:focus,
.start-button:focus-visible {
  outline: none;
  box-shadow: none;
}

.start-button:active {
  transform: none;
}

.start-button[hidden] {
  display: none;
}

.start-screen-status[hidden] {
  display: none;
}

.start-button:disabled,
.start-screen.is-armed .start-button {
  pointer-events: none;
}

.annotation-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.annotation-layer {
  z-index: 2;
  overflow: hidden;
}

.observation-callout {
  position: absolute;
  width: min(230px, calc(100vw - 28px));
  height: 126px;
  padding: 10px 12px 11px;
  border: 1.5px solid rgba(255, 255, 255, calc(var(--observation-stroke-opacity) * var(--observation-glass-opacity) * var(--observation-spatial-opacity)));
  border-radius: var(--observation-corner-radius);
  background: transparent;
  box-shadow: none;
  font-family: var(--font-story);
  isolation: isolate;
  opacity: 0;
  overflow: visible;
  pointer-events: none;
  transform: translateZ(0);
  user-select: none;
  -webkit-user-select: none;
}

.observation-callout.is-visible {
  opacity: 1;
}

.observation-callout::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: calc(-1 * var(--observation-edge-feather-outset));
  border-radius: calc(var(--observation-corner-radius) + var(--observation-edge-feather-outset));
  background: rgba(var(--observation-tint-rgb), var(--observation-tint-opacity));
  /* Feather the backdrop-filtered layer itself; a plain blurred fill leaves a hard blur edge. */
  backdrop-filter: blur(var(--observation-blur-radius)) saturate(1.12);
  -webkit-backdrop-filter: blur(var(--observation-blur-radius)) saturate(1.12);
  -webkit-mask-image:
    linear-gradient(to right, transparent, #000 var(--observation-edge-feather-mask), #000 calc(100% - var(--observation-edge-feather-mask)), transparent),
    linear-gradient(to bottom, transparent, #000 var(--observation-edge-feather-mask), #000 calc(100% - var(--observation-edge-feather-mask)), transparent);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent, #000 var(--observation-edge-feather-mask), #000 calc(100% - var(--observation-edge-feather-mask)), transparent),
    linear-gradient(to bottom, transparent, #000 var(--observation-edge-feather-mask), #000 calc(100% - var(--observation-edge-feather-mask)), transparent);
  mask-composite: intersect;
  opacity: calc(var(--observation-edge-feather-opacity) * var(--observation-glass-opacity) * var(--observation-spatial-opacity));
  pointer-events: none;
}

.observation-tail {
  position: absolute;
  z-index: 2;
  width: 0;
  height: 1.5px;
  background: rgba(255, 255, 255, calc(var(--observation-stroke-opacity) * var(--observation-glass-opacity) * var(--observation-spatial-opacity)));
  opacity: 0;
  pointer-events: none;
  transform-origin: 0 50%;
}

.observation-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  opacity: calc(var(--observation-text-opacity) * var(--observation-spatial-opacity));
  position: relative;
  z-index: 3;
}

.observation-callout p {
  flex: 1 1 auto;
  margin: 0;
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: contain;
  padding: 2px 5px 2px 0;
  color: rgba(var(--observation-text-rgb), 0.88);
  font-size: 1.17rem;
  line-height: 1.35;
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent,
    #000 var(--observation-text-fade),
    #000 calc(100% - var(--observation-text-fade)),
    transparent
  );
  mask-image: linear-gradient(
    to bottom,
    transparent,
    #000 var(--observation-text-fade),
    #000 calc(100% - var(--observation-text-fade)),
    transparent
  );
  scrollbar-width: none;
}

.observation-text-roll {
  display: block;
  will-change: transform;
}

.observation-line {
  display: block;
  min-height: 1.35em;
  overflow: hidden;
  white-space: nowrap;
  will-change: mask-position, -webkit-mask-position;
}

.observation-callout p::-webkit-scrollbar {
  display: none;
}

.panel {
  position: absolute;
  z-index: 4;
  top: 16px;
  left: 16px;
  width: min(460px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  overflow: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
}

.sound-check-panel {
  position: absolute;
  z-index: 5;
  top: 64px;
  right: 16px;
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100vh - 88px);
  overflow: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
}

.sound-check-panel[hidden] {
  display: none;
}

/* Touch-only triple-tap target for opening/closing the parameters panel on
   phones. Above the panel (z beats .panel/.sound-check-panel) so it can close
   a full-screen panel; below the diagnostics overlay (z 99999). Pointer input
   only, so it never steals a corner of the pointer from desktop OrbitControls. */
#panelTouchToggle {
  display: none;
}

@media (pointer: coarse) {
  #panelTouchToggle {
    display: block;
    position: fixed;
    z-index: 100;
    right: 0;
    bottom: 0;
    width: max(60px, env(safe-area-inset-right));
    height: max(60px, env(safe-area-inset-bottom));
    min-width: 60px;
    min-height: 60px;
    background: transparent;
  }
}

#app[data-panels-visible="false"] .panel,
#app[data-panels-visible="false"] .sound-check-panel {
  display: none;
}

.sound-check-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.sound-check-head h2 {
  margin: 0;
  color: var(--text);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.sound-check-grid {
  display: grid;
  gap: 8px;
}

.sound-check-row {
  display: grid;
  grid-template-columns: minmax(140px, 1.15fr) 68px minmax(136px, 0.9fr) 72px minmax(104px, 0.45fr) minmax(104px, 0.45fr);
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 7px;
  background: rgba(8, 11, 12, 0.42);
}

.sound-file-label {
  min-width: 0;
  overflow: hidden;
  color: var(--text);
  font-size: 0.74rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sound-check-row button {
  min-width: 0;
  padding: 0 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sound-volume-cell {
  display: grid;
  grid-template-columns: 28px minmax(72px, 1fr) 44px;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.sound-volume-cell span,
.sound-loop-cell span,
.sound-time-cell span {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
}

.sound-volume-cell output {
  color: var(--text);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

.sound-loop-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.sound-loop-cell input {
  width: 16px;
  height: 16px;
  accent-color: var(--gold);
}

.sound-time-cell {
  display: grid;
  grid-template-columns: 24px minmax(68px, 1fr);
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.sound-time-cell input,
.sound-compressor-control input[type="number"] {
  width: 100%;
  min-width: 0;
  min-height: 28px;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-strong);
  color: var(--text);
  font: inherit;
  font-variant-numeric: tabular-nums;
}

.sound-check-row button.is-loading {
  color: var(--muted);
}

.sound-check-row button.is-active {
  border-color: rgba(109, 223, 129, 0.55);
  color: var(--green);
}

.sound-compressor-panel {
  display: grid;
  gap: 10px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.sound-compressor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.sound-compressor-head h3 {
  margin: 0;
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.sound-compressor-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.sound-compressor-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--gold);
}

.sound-compressor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 12px;
}

.sound-compressor-control {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) 48px;
  align-items: center;
  gap: 7px;
  min-width: 0;
}

.sound-compressor-control span {
  overflow: hidden;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.sound-compressor-control output {
  color: var(--text);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.panel-tools {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.panel.is-collapsed {
  overflow: hidden;
}

.panel.is-collapsed .panel-body {
  display: none;
}

h1 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.15;
  letter-spacing: 0;
}

p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
}

.icon-button,
button,
select {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-strong);
  color: var(--text);
  cursor: pointer;
}

button:not(.start-button):hover {
  border-color: rgba(140, 232, 255, 0.45);
  background: rgba(44, 55, 58, 0.92);
}

button:active {
  transform: translateY(1px);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
  gap: 8px;
  margin: 14px 0;
}

.preset-stack {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
}

.preset-control {
  display: grid;
  grid-template-columns: minmax(88px, 0.55fr) minmax(0, 1fr);
  align-items: center;
  gap: 10px;
}

.preset-control label {
  min-width: 0;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.preset-control select {
  min-width: 0;
  width: 100%;
}

.agent-history {
  margin: -4px 0 14px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(8, 11, 12, 0.54);
}

.agent-history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.agent-history-head output {
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.history-chart {
  display: block;
  width: 100%;
  height: 76px;
}

#agentGrowthChart {
  height: 54px;
  margin-top: 8px;
}

#agentAccelerationChart {
  height: 54px;
  margin-top: 8px;
}

.stats > div {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(8, 11, 12, 0.54);
}

.stats strong,
.stats span {
  display: block;
  white-space: nowrap;
}

.stats strong {
  overflow: hidden;
  color: var(--cyan);
  font-size: clamp(0.9rem, 7vw, 1.22rem);
  line-height: 1.05;
  text-overflow: ellipsis;
}

.stats span {
  margin-top: 3px;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  text-transform: uppercase;
}

.controls {
  display: grid;
  gap: 12px;
}

.control-group {
  display: grid;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.control-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.control-group h2 {
  margin: 0 0 2px;
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.control-row {
  display: grid;
  grid-template-columns: 124px minmax(112px, 1fr) 56px;
  align-items: center;
  gap: 10px;
  min-height: 30px;
  color: var(--muted);
  font-size: 0.78rem;
}

.control-copy {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 6px;
}

.control-copy strong {
  min-width: 0;
  overflow: visible;
  color: var(--muted);
  font-weight: 600;
  line-height: 1.15;
  text-overflow: clip;
  white-space: normal;
}

.help-tip {
  position: relative;
  display: inline-grid;
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  place-items: center;
  border: 1px solid rgba(255, 205, 88, 0.55);
  border-radius: 50%;
  color: var(--gold);
  cursor: help;
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1;
}

.help-tip > span {
  position: absolute;
  top: 50%;
  left: calc(100% + 8px);
  z-index: 10;
  width: max-content;
  max-width: 220px;
  padding: 7px 8px;
  border: 1px solid rgba(255, 205, 88, 0.28);
  border-radius: 6px;
  background: rgba(8, 10, 9, 0.96);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.42);
  color: var(--text);
  font-size: 0.68rem;
  font-weight: 500;
  line-height: 1.25;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%);
  transition: opacity 120ms ease;
  visibility: hidden;
  white-space: normal;
}

.help-tip:hover > span,
.help-tip:focus > span,
.help-tip:focus-visible > span {
  opacity: 1;
  visibility: visible;
}

.help-tip:focus-visible {
  outline: 2px solid rgba(255, 205, 88, 0.5);
  outline-offset: 2px;
}

output {
  min-width: 0;
  overflow: hidden;
  color: var(--text);
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

input[type="range"] {
  width: 100%;
  min-width: 0;
  accent-color: var(--gold);
}

input[type="color"] {
  width: 42px;
  height: 28px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-strong);
  cursor: pointer;
}

.toggle-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 30px;
}

.toggle-control input {
  width: 18px;
  height: 18px;
  accent-color: var(--gold);
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}

.actions button {
  min-width: 0;
  padding: 0 8px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.camera-readout {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: grid;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
}

.camera-readout-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 12px;
  margin: 0;
}

.camera-readout-grid div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
}

.camera-readout-grid dt {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.camera-readout-grid dd {
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  margin: 0;
  text-align: right;
}

.camera-pose-command {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(238, 245, 242, 0.78);
  font-family: var(--font-ui);
  font-size: 0.62rem;
  line-height: 1.35;
  margin: 0;
  max-height: 64px;
  overflow: hidden;
  padding: 7px 8px;
  white-space: pre-wrap;
  word-break: break-all;
}

.error {
  color: var(--red);
}

@media (max-width: 560px) {
  .panel {
    top: max(10px, env(safe-area-inset-top));
    left: max(10px, env(safe-area-inset-left));
    width: calc(100vw - max(10px, env(safe-area-inset-left)) - max(10px, env(safe-area-inset-right)));
    padding: 12px;
  }

  .control-row {
    grid-template-columns: 108px minmax(72px, 1fr) 48px;
    gap: 8px;
  }

  .help-tip > span {
    max-width: 170px;
  }

  .sound-check-panel {
    top: calc(48px + max(10px, env(safe-area-inset-top)));
    right: max(10px, env(safe-area-inset-right));
    width: calc(100vw - max(10px, env(safe-area-inset-left)) - max(10px, env(safe-area-inset-right)));
    max-height: calc(100vh - 68px - env(safe-area-inset-bottom));
    padding: 12px;
  }

  .sound-check-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sound-file-label,
  .sound-volume-cell,
  .sound-check-row button {
    grid-column: 1 / -1;
  }

  .sound-loop-cell,
  .sound-time-cell {
    justify-content: start;
  }

  .sound-compressor-grid {
    grid-template-columns: 1fr;
  }
}