:root {
  color-scheme: dark;
  --bg: #0e131a;
  --panel: #171f29;
  --line: #2a3542;
  --text: #edf2f7;
  --muted: #9eafc1;
  --mint: #a2f4d0;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
header {
  max-width: 1600px;
  margin: auto;
  min-height: 96px;
  padding: 22px 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  text-decoration: none;
  color: var(--text);
  font-size: 22px;
  font-weight: 650;
}
.brand-icon {
  color: var(--mint);
  font-size: 30px;
}
.tag,
.eyebrow {
  font-size: 10px;
  letter-spacing: 1.7px;
  font-weight: 650;
  color: var(--muted);
}
.tag {
  border: 1px solid var(--line);
  padding: 6px 8px;
  border-radius: 5px;
  white-space: nowrap;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
#status {
  font-size: 12px;
  color: var(--mint);
  margin-right: 8px;
}
button,
select,
#mech-host {
  font: inherit;
  font-size: 13px;
  border: 1px solid var(--line);
  background: #202b38;
  color: var(--text);
  border-radius: 9px;
  padding: 11px 14px;
}
button {
  cursor: pointer;
  transition: background 0.15s;
}
button:hover {
  background: #334256;
}
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}
button:disabled {
  opacity: 0.4;
  cursor: default;
}
.primary {
  background: var(--mint);
  color: #133c2c;
  border-color: var(--mint);
  font-weight: 650;
}
.primary:hover {
  background: #c9ffe7;
}
main {
  max-width: 1600px;
  margin: auto;
  padding: 0 36px 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 22px;
}
.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  overflow: hidden;
}
.stage {
  position: relative;
  min-height: 600px;
  display: flex;
  flex-direction: column;
  background: radial-gradient(
    ellipse at 50% 45%,
    #263b46 0,
    #18242f 48%,
    #131c26 100%
  );
}
.stage-top,
.stage-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 26px 30px;
}
.pill {
  font-size: 12px;
  color: var(--mint);
  border: 1px solid #48695f;
  border-radius: 20px;
  padding: 6px 12px;
}
#eyes {
  width: 100%;
  height: auto;
  margin: auto;
  max-height: 420px;
  object-fit: contain;
}
.stage-copy {
  text-align: center;
  padding: 0 20px 35px;
}
h1 {
  font-size: clamp(25px, 3vw, 40px);
  letter-spacing: -1px;
  margin: 0 0 12px;
  line-height: 1.15;
}
.stage-copy p {
  color: #b3c4d2;
  font-size: 15px;
  margin: 0;
}
.stage-bottom {
  border-top: 1px solid #ffffff0a;
  font-size: 11px;
  color: var(--muted);
  padding: 18px 30px;
}
.stage-bottom i,
.connection-note i {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--mint);
  border-radius: 50%;
  margin-right: 7px;
}
aside {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.control {
  padding: 22px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 18px;
  letter-spacing: -0.2px;
}
.section-heading h2 {
  margin: 0;
}
.camera-wrap {
  position: relative;
  aspect-ratio: 16/10;
  background: #101720;
  border: 1px solid var(--line);
  border-radius: 11px;
  margin: 18px 0;
  overflow: hidden;
}
video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: scaleX(-1);
}
#camera-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
label.check {
  display: flex;
  gap: 7px;
  align-items: center;
  margin-top: -8px;
}
label.check input {
  accent-color: var(--mint);
}
#camera-empty {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}
#camera-empty small {
  font-size: 10px;
  color: #778b9e;
}
.camera-label {
  position: absolute;
  bottom: 9px;
  left: 10px;
  font-size: 9px;
  color: #b6c8d8;
  background: #0e131ab0;
  padding: 4px 7px;
  border-radius: 4px;
}
label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin: 12px 0 8px;
}
select,
#mech-host {
  width: 100%;
}
.button-row {
  display: flex;
  gap: 9px;
  margin-top: 12px;
}
.button-row button:first-child {
  flex: 1;
}
.hint {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  margin: 14px 0 0;
}
.slider-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
}
output {
  font-size: 11px;
  color: var(--mint);
}
input[type="range"] {
  width: 100%;
  accent-color: var(--mint);
}
.readings {
  padding: 25px 30px;
}
.readings h2 {
  margin-top: 8px;
}
.eye-readings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-top: 20px;
}
.eye-readings > div + div {
  border-left: 1px solid var(--line);
  padding-left: 36px;
}
h3 {
  font-size: 13px;
  color: var(--mint);
  font-weight: 550;
}
dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 9px;
  font-size: 12px;
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}
.connection-note {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 22px;
  font-size: 11px;
  color: var(--muted);
}
#record {
  margin-top: 20px;
  width: 100%;
}
footer {
  max-width: 1600px;
  margin: auto;
  padding: 0 36px 25px;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #6d8296;
}
.visitor .staff {
  display: none;
}
.visitor main {
  grid-template-columns: 1fr;
}
.visitor .stage {
  min-height: calc(100dvh - 125px);
}
.visitor #eyes {
  max-height: 60vh;
}
.visitor .stage-copy {
  padding-bottom: 45px;
}
@media (max-width: 1000px) {
  header {
    padding: 20px;
  }
  .brand .tag {
    display: none;
  }
  main {
    padding: 0 20px 20px;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 16px;
  }
  .control {
    padding: 18px;
  }
  .stage {
    min-height: 550px;
  }
  .section-heading {
    flex-wrap: wrap;
  }
}
@media (max-width: 760px) {
  header {
    flex-wrap: wrap;
    gap: 12px;
  }
  .header-actions {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }
  main {
    grid-template-columns: 1fr;
  }
  .stage {
    min-height: 420px;
  }
  .stage-copy {
    padding-bottom: 30px;
  }
  .stage-top {
    padding: 20px;
  }
  .eye-readings {
    gap: 20px;
  }
  .eye-readings > div + div {
    padding-left: 20px;
  }
  footer span {
    display: none;
  }
}
/* The exploration mode reuses the camera session, with an undelayed inspection view. */
.exploration {
  display: none;
}
.exploring .exploration {
  display: block;
}
.exploring .stage {
  display: none;
}
.exploring .playful-controls {
  display: none;
}
.exploration:not(.challenge-panel) {
  padding: 28px;
  align-self: start;
}
.exploration h1 {
  margin: 10px 0 0;
  font-size: 34px;
}
.tracking-steps {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 24px 0 18px;
}
.tracking-steps li {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px;
  background: #111b24;
}
.tracking-steps b {
  display: block;
  color: var(--mint);
  font-size: 12px;
  margin-bottom: 8px;
}
.tracking-steps span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}
#tracking-map {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  background: #101720;
}
.map-toolbar {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 9px;
}
.map-toolbar label {
  display: flex;
  gap: 7px;
  align-items: center;
  margin: 0;
  font-size: 11px;
}
.map-toolbar input {
  accent-color: var(--mint);
}
#explore-age {
  color: var(--muted);
  font-size: 10px;
  margin-left: auto;
}
.legend {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 11px;
  margin: 22px 0 16px;
}
.iris-key {
  color: #ffdb78;
}
.upper-key {
  color: #bdacff;
}
.lower-key {
  color: #69e5e0;
}
.eye-labs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.eye-labs article {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 15px;
  min-width: 0;
}
.eye-labs h2 {
  font-size: 14px;
}
.eye-labs canvas {
  width: 100%;
  height: auto;
  background: #101720;
  border-radius: 8px;
  margin-top: 14px;
}
.eye-status {
  font-size: 11px;
  color: var(--muted);
}
.eye-status[data-state="Open"] {
  color: var(--mint);
}
.eye-status[data-state="Closed"] {
  color: #bdacff;
}
.eye-status[data-state="Uncertain"] {
  color: #ffdb78;
}
.signal-values {
  font-size: 11px;
  line-height: 1.7;
  font-variant-numeric: tabular-nums;
  color: #dae4ee;
}
.iris-color {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.color-swatch {
  display: block;
  flex: 0 0 38px;
  height: 38px;
  border: 1px solid #80919e;
  border-radius: 50%;
}
.iris-color .eyebrow {
  font-size: 9px;
  letter-spacing: 1px;
}
.iris-color p {
  margin: 5px 0 0;
  font-size: 13px;
}
.exploration details {
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 12px;
}
.exploration summary {
  cursor: pointer;
  color: var(--mint);
}
.challenge-panel h2 {
  margin-top: 10px;
}
.challenge-panel .primary {
  width: 100%;
  margin-top: 18px;
}
.challenge-detected {
  color: var(--mint);
  font-size: 16px;
  margin: 20px 0 0;
  font-weight: 600;
}
.feedback-buttons {
  display: grid;
  gap: 8px;
  margin: 18px 0;
}
.attempts {
  padding-left: 16px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}
.attempts li {
  margin-bottom: 8px;
}
textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101720;
  color: var(--text);
  font: inherit;
  font-size: 12px;
  padding: 10px;
}
.header-actions {
  flex-wrap: wrap;
}
@media (max-width: 760px) {
  .exploration:not(.challenge-panel) {
    padding: 18px;
  }
  .tracking-steps {
    gap: 6px;
  }
  .tracking-steps li {
    padding: 9px;
  }
  .eye-labs {
    grid-template-columns: 1fr;
  }
  .exploration h1 {
    font-size: 28px;
  }
  #explore-age {
    margin-left: 0;
  }
  .header-actions #status {
    width: 100%;
  }
  .header-actions button {
    font-size: 12px;
    padding: 10px;
  }
  .map-toolbar {
    gap: 10px;
  }
}
.mechanism label.check {
  margin: 10px 0;
}
.mechanism code {
  font-size: 11px;
}
.mech-toggle {
  width: 100%;
  margin: 14px 0 6px;
  padding: 12px;
  font-size: 15px;
}
.mech-toggle[aria-pressed="true"] {
  background: #2c5a4a;
  border-color: var(--mint);
}
/* On the stage, so visitors as well as staff can see whether the robot is listening. */
.robot-link[data-level]:not([data-level="off"]) {
  font-size: 15px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid currentColor;
}
.robot-link[data-level]:not([data-level="off"]) i {
  width: 10px;
  height: 10px;
  background: currentColor;
}
.robot-link[data-level="following"],
.robot-link[data-level="ready"] {
  color: var(--mint);
}
.robot-link[data-level="connecting"] {
  color: #ffdb78;
}
.robot-link[data-level="refused"],
.robot-link[data-level="lost"] {
  color: #ff8f8f;
  background: #ff8f8f14;
}
.robot-link[data-level="following"] i,
.robot-link[data-level="lost"] i {
  animation: robot-pulse 1.2s ease-in-out infinite;
}
@keyframes robot-pulse {
  50% {
    opacity: 0.25;
  }
}
@media (prefers-reduced-motion: reduce) {
  .robot-link i {
    animation: none !important;
  }
}
#mech-status.warning,
#rate.warning {
  color: #ffdb78;
}
/* The visitor's only control: everything else is hidden on the play page. */
.play {
  display: none;
  margin-top: 18px;
  font-size: 15px;
  padding: 14px 26px;
}
.visitor .play {
  display: inline-block;
}
.visitor.exploring .play {
  display: none;
}
.play-note {
  display: none;
  margin: 14px auto 0;
  max-width: 460px;
  font-size: 13px;
  color: var(--muted);
}
.visitor .play-note {
  display: block;
}
.visitor.exploring .play-note {
  display: none;
}
/* The wink lab's challenges sit in the staff column, which the play page hides. While
   a visitor is exploring, show that column but only the challenges within it. */
.visitor.exploring aside.staff {
  display: block;
}
.visitor.exploring aside.staff > *:not(.exploration) {
  display: none;
}