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

:root {
  --bg: #030405;
  --ink: rgba(248, 245, 235, 0.94);
  --muted: rgba(248, 245, 235, 0.66);
  --quiet: rgba(248, 245, 235, 0.42);
  --cyan: #84f9ff;
  --green: #9affbe;
  --rose: #ff7cbc;
  --panel: rgba(4, 6, 7, 0.66);
  --line: rgba(132, 249, 255, 0.24);
  --pin: 42px;
  --radius: 6px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

button {
  font: inherit;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

#camera,
#demo-surface,
#mapper-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}

#camera {
  z-index: 0;
  object-fit: cover;
  background: #000;
}

#demo-surface {
  z-index: 0;
  display: none;
  overflow: hidden;
  background:
    radial-gradient(circle at 52% 42%, rgba(132, 249, 255, 0.12), transparent 26%),
    linear-gradient(116deg, #15191b 0 48%, #07090a 48% 52%, #101315 52% 100%);
}

.demo-mode #camera {
  display: none;
}

.demo-mode #demo-surface {
  display: block;
}

.demo-plane {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.7;
}

.plane-a {
  clip-path: polygon(0 0, 48% 0, 52% 100%, 0 100%);
}

.plane-b {
  clip-path: polygon(48% 0, 100% 0, 100% 100%, 52% 100%);
  transform: skewY(-3deg);
  opacity: 0.52;
}

.demo-object {
  position: absolute;
  left: 57%;
  top: 46%;
  width: min(24vw, 130px);
  aspect-ratio: 1;
  border: 1px solid rgba(248,245,235,0.22);
  background:
    linear-gradient(135deg, rgba(248,245,235,0.12), rgba(132,249,255,0.04)),
    rgba(0,0,0,0.18);
  box-shadow: 42px 34px 48px rgba(0,0,0,0.48);
  transform: rotate(8deg);
}

#mapper-canvas {
  z-index: 2;
  pointer-events: none;
  opacity: 0;
}

.started #mapper-canvas {
  opacity: 1;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.46), transparent 20%, transparent 60%, rgba(0,0,0,0.62)),
    radial-gradient(circle at 20% 18%, rgba(132,249,255,0.09), transparent 26%),
    radial-gradient(circle at 88% 60%, rgba(255,124,188,0.08), transparent 30%);
}

.pin {
  position: fixed;
  z-index: 8;
  left: 0;
  top: 0;
  width: var(--pin);
  height: var(--pin);
  margin-left: calc(var(--pin) / -2);
  margin-top: calc(var(--pin) / -2);
  border: 1px solid rgba(132,249,255,0.74);
  border-radius: 50%;
  background: rgba(2, 8, 10, 0.62);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.32), 0 0 22px rgba(132,249,255,0.22);
  cursor: grab;
  touch-action: none;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
}

.started .pin {
  opacity: 1;
  pointer-events: auto;
}

.pin span {
  color: var(--cyan);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.pin.active {
  cursor: grabbing;
  transform: scale(1.18);
  border-color: var(--green);
}

.guide-hidden .pin {
  opacity: 0;
  pointer-events: none;
}

#landing {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, min(430px, 100%));
  align-content: center;
  justify-content: center;
  justify-items: center;
  gap: 18px;
  padding: 28px;
  background:
    radial-gradient(circle at 50% 36%, rgba(132,249,255,0.13), transparent 28%),
    rgba(3, 4, 5, 0.9);
  text-align: center;
  overflow: hidden;
  transition: opacity 0.32s, visibility 0.32s;
}

#landing > * {
  min-width: 0;
}

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

.eyebrow {
  color: var(--cyan);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

#landing h1 {
  width: min(100%, 300px);
  font-size: clamp(2.1rem, 10vw, 2.6rem);
  line-height: 1;
  overflow-wrap: anywhere;
}

#landing p {
  width: min(100%, 270px);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.56;
}

.landing-actions {
  display: grid;
  gap: 10px;
  width: min(260px, 100%);
  justify-self: center;
  margin-top: 4px;
}

.primary-action,
.quiet-action,
#controls button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(4, 8, 10, 0.58);
  color: var(--ink);
  font-weight: 750;
  cursor: pointer;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.primary-action {
  border-color: transparent;
  color: #021012;
  background: linear-gradient(135deg, var(--cyan), var(--green));
}

.quiet-action {
  color: var(--muted);
}

.privacy-note {
  justify-self: center;
  color: var(--quiet) !important;
  font-size: 0.78rem !important;
}

#insight {
  position: fixed;
  left: 14px;
  right: 14px;
  top: calc(14px + env(safe-area-inset-top));
  z-index: 10;
  max-width: 620px;
  margin: 0 auto;
  padding: 12px 14px;
  border: 1px solid rgba(248,245,235,0.14);
  border-radius: var(--radius);
  background: rgba(3, 4, 5, 0.44);
  color: rgba(248,245,235,0.78);
  font-size: 0.88rem;
  line-height: 1.35;
  text-align: center;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.32s, transform 0.32s;
}

.started #insight {
  opacity: 1;
  transform: none;
}

#status {
  position: fixed;
  left: 50%;
  top: calc(68px + env(safe-area-inset-top));
  z-index: 12;
  max-width: calc(100% - 30px);
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(3,4,5,0.64);
  color: var(--quiet);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: translateX(-50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s;
}

#status.visible {
  opacity: 1;
}

#controls {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  display: grid;
  gap: 9px;
  padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, transparent, rgba(3,4,5,0.42) 10%, rgba(3,4,5,0.76));
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.32s, transform 0.32s;
}

.started #controls {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.mode-row,
.tool-row {
  display: grid;
  gap: 8px;
}

.mode-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tool-row {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

#controls button {
  min-width: 0;
  padding: 0 9px;
  overflow: hidden;
  font-size: 0.74rem;
  white-space: nowrap;
  text-overflow: ellipsis;
}

#controls .mode-btn {
  color: var(--muted);
}

#controls .mode-btn.active {
  border-color: rgba(132,249,255,0.8);
  color: var(--cyan);
  background: rgba(132,249,255,0.1);
}

@media (min-width: 760px) {
  #landing h1 {
    font-size: 3.4rem;
  }

  #controls {
    left: 50%;
    right: auto;
    width: min(720px, calc(100% - 32px));
    transform: translate(-50%, 16px);
    border: 1px solid rgba(248,245,235,0.12);
    border-radius: 8px 8px 0 0;
    background: rgba(3,4,5,0.62);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
  }

  .started #controls {
    transform: translate(-50%, 0);
  }
}

@media (max-width: 430px) {
  #landing h1 {
    font-size: 2.28rem;
  }

  #insight {
    font-size: 0.82rem;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}