:root {
  color-scheme: dark;
  --bg: #071016;
  --panel: rgba(8, 20, 27, 0.82);
  --panel-strong: rgba(8, 20, 27, 0.94);
  --line: rgba(184, 226, 240, 0.18);
  --line-strong: rgba(184, 226, 240, 0.32);
  --text: #f4fbfd;
  --muted: #91a8b2;
  --accent: #56e7ff;
  --accent-strong: #a0f3ff;
  --x: #ff6f83;
  --y: #a6ed61;
  --z: #72a7ff;
  --danger: #ff8b91;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  min-width: 320px;
  background:
    radial-gradient(circle at 50% 15%, rgba(39, 131, 151, 0.18), transparent 34rem),
    linear-gradient(160deg, #0a1820 0%, var(--bg) 58%);
  color: var(--text);
  overflow-x: hidden;
}

button {
  font: inherit;
}

button:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 3px;
}

#xr-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.app-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: min(100%, 38rem);
  min-height: 100svh;
  margin: 0 auto;
  padding:
    max(1rem, env(safe-area-inset-top))
    max(1rem, env(safe-area-inset-right))
    max(1rem, env(safe-area-inset-bottom))
    max(1rem, env(safe-area-inset-left));
}

.topbar,
.panel-heading,
.brand,
.status-badge,
.measurement-controls {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  min-height: 4.25rem;
}

.brand {
  gap: 0.8rem;
}

.brand-mark {
  position: relative;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.8rem;
  background: rgba(9, 28, 37, 0.74);
  box-shadow: inset 0 0 1.4rem rgba(86, 231, 255, 0.1);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span::before,
.brand-mark span::after {
  position: absolute;
  width: 0.58rem;
  height: 0.58rem;
  border-color: var(--accent);
  border-style: solid;
  content: "";
}

.brand-mark::before {
  inset: 0.48rem auto auto 0.48rem;
  border-width: 2px 0 0 2px;
}

.brand-mark::after {
  inset: 0.48rem 0.48rem auto auto;
  border-width: 2px 2px 0 0;
}

.brand-mark span::before {
  inset: auto auto 0.48rem 0.48rem;
  border-width: 0 0 2px 2px;
}

.brand-mark span::after {
  inset: auto 0.48rem 0.48rem auto;
  border-width: 0 2px 2px 0;
}

.eyebrow {
  margin: 0 0 0.2rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.icon-button {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--text);
}

.icon-button svg {
  width: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.75;
}

.measure-panel {
  align-self: center;
  width: 100%;
  padding: clamp(1.15rem, 4vw, 1.7rem);
  border: 1px solid var(--line);
  border-radius: 1.65rem;
  background: var(--panel);
  box-shadow: 0 1.6rem 5rem rgba(0, 0, 0, 0.3), inset 0 1px rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(18px) saturate(125%);
  -webkit-backdrop-filter: blur(18px) saturate(125%);
}

.panel-heading {
  justify-content: space-between;
  gap: 1rem;
}

.status-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.status-badge {
  flex: 0 0 auto;
  gap: 0.45rem;
  padding: 0.55rem 0.68rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.09em;
}

.status-dot {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: currentColor;
}

.status-badge.is-active {
  color: var(--accent);
}

.status-badge.is-active .status-dot {
  box-shadow: 0 0 0 0.3rem rgba(86, 231, 255, 0.14), 0 0 1rem var(--accent);
  animation: pulse 1.8s ease-in-out infinite;
}

.total-readout {
  margin: clamp(1.9rem, 7vw, 3.25rem) 0 clamp(1.5rem, 5vw, 2.4rem);
  text-align: center;
}

.readout-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.16em;
}

.total-readout div {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
}

#distance-total {
  font-variant-numeric: tabular-nums;
  font-size: clamp(3.5rem, 18vw, 6.5rem);
  font-weight: 250;
  line-height: 0.95;
  letter-spacing: -0.075em;
  text-shadow: 0 0 2.5rem rgba(86, 231, 255, 0.18);
}

.unit {
  color: var(--accent);
  font-size: 1.35rem;
  font-weight: 650;
}

.axis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.axis-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  min-width: 0;
  padding: 0.85rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: rgba(190, 235, 248, 0.045);
}

.axis-label {
  align-self: center;
  width: 1.35rem;
  height: 1.35rem;
  margin-right: 0.35rem;
  border-radius: 0.36rem;
  color: #071016;
  font-size: 0.73rem;
  font-weight: 850;
  line-height: 1.35rem;
  text-align: center;
}

.axis-x .axis-label {
  background: var(--x);
}

.axis-y .axis-label {
  background: var(--y);
}

.axis-z .axis-label {
  background: var(--z);
}

.axis-card strong {
  overflow: hidden;
  font-size: clamp(1rem, 4.5vw, 1.45rem);
  font-variant-numeric: tabular-nums;
  font-weight: 520;
  letter-spacing: -0.035em;
  text-overflow: clip;
}

.axis-unit {
  margin-left: 0.18rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.controls {
  margin-top: 1.5rem;
}

.primary-button,
.secondary-button {
  min-height: 3.65rem;
  border-radius: 1rem;
  font-size: 1rem;
  font-weight: 720;
  cursor: pointer;
  touch-action: manipulation;
}

.primary-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 0.7rem;
  border: 1px solid rgba(160, 243, 255, 0.68);
  background: linear-gradient(135deg, #a4f4ff, #52d8ee);
  color: #062029;
  box-shadow: 0 0.9rem 2.4rem rgba(50, 203, 225, 0.18);
}

.primary-button svg {
  width: 1.3rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.75;
}

.secondary-button {
  flex: 0 0 38%;
  border: 1px solid var(--line-strong);
  background: rgba(229, 248, 252, 0.06);
  color: var(--text);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: not-allowed;
  filter: saturate(0.25);
  opacity: 0.45;
}

.measurement-controls {
  gap: 0.7rem;
}

.measurement-controls .primary-button {
  flex: 1 1 auto;
}

.button-dot,
.button-square {
  width: 0.72rem;
  height: 0.72rem;
  background: currentColor;
}

.button-dot {
  border-radius: 50%;
}

.button-square {
  display: inline-block;
  margin-right: 0.45rem;
  border-radius: 0.12rem;
}

.support-message {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
  text-align: center;
}

.support-message.is-error {
  color: var(--danger);
}

.help-text {
  padding: 1.4rem 0 0.25rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
  text-align: center;
}

.help-text p {
  margin: 0.2rem 0;
}

.is-hidden {
  display: none !important;
}

body.xr-active {
  background: transparent;
}

body.xr-active .app-shell {
  pointer-events: none;
}

body.xr-active .topbar,
body.xr-active .measure-panel {
  pointer-events: auto;
}

body.xr-active .measure-panel {
  align-self: end;
  margin-bottom: 0.4rem;
  padding: 1rem;
  border-radius: 1.25rem;
  background: rgba(5, 17, 23, 0.69);
}

body.xr-active .topbar {
  min-height: 3rem;
}

body.xr-active .brand-mark,
body.xr-active .brand .eyebrow,
body.xr-active .help-text,
body.xr-active .support-message,
body.xr-active .panel-heading .eyebrow {
  display: none;
}

body.xr-active .total-readout {
  margin: 0.65rem 0 1rem;
}

body.xr-active #distance-total {
  font-size: clamp(3rem, 15vw, 5rem);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

@media (max-height: 650px) {
  .app-shell {
    grid-template-rows: auto auto auto;
  }

  .measure-panel {
    margin-top: 0.75rem;
  }

  .total-readout {
    margin: 1.25rem 0;
  }

  .help-text {
    padding-top: 0.8rem;
  }
}

@media (max-width: 370px) {
  .app-shell {
    padding-inline: 0.7rem;
  }

  .axis-card {
    grid-template-columns: auto 1fr;
    padding: 0.75rem 0.55rem;
  }

  .axis-unit {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .status-badge.is-active .status-dot {
    animation: none;
  }
}