.pointcloud-demo {
  width: min(100%, 88rem);
  margin-inline: auto;
  padding: clamp(3.75rem, 7vw, 7rem) clamp(1.25rem, 4vw, 4rem);
  border-top: 1px solid #d5e1e5;
  background: #f5f8f9;
}

.pointcloud-demo__header {
  display: grid;
  grid-template-columns: minmax(18rem, .8fr) minmax(20rem, 1.2fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.pointcloud-demo__header h2 {
  max-width: 38rem;
  margin: .65rem 0 0;
  color: #004b67;
  font-size: clamp(2rem, 3.3vw, 3.5rem);
  letter-spacing: -.045em;
  line-height: 1.04;
}

.pointcloud-demo__header > p {
  max-width: 42rem;
  margin: 0;
  color: #65757b;
  line-height: 1.7;
}

.pointcloud-demo__stage {
  position: relative;
  min-height: 39rem;
  overflow: hidden;
  background: #071f2a;
  border: 1px solid #adc2ca;
  box-shadow: 0 1.5rem 4rem rgba(2, 45, 61, .12);
}

.pointcloud-demo__canvas {
  display: block;
  width: 100%;
  height: 39rem;
  cursor: grab;
  touch-action: none;
}

.pointcloud-demo__canvas:active { cursor: grabbing; }

.pointcloud-demo__toolbar {
  position: absolute;
  z-index: 3;
  top: 1rem;
  left: 1rem;
  display: flex;
  padding: .3rem;
  gap: .25rem;
  background: rgba(4, 30, 41, .9);
  border: 1px solid rgba(144, 217, 225, .35);
  backdrop-filter: blur(10px);
}

.pointcloud-demo__toolbar button,
.pointcloud-demo__reset {
  min-height: 2.55rem;
  padding: .55rem .8rem;
  color: rgba(255, 255, 255, .72);
  background: transparent;
  border: 1px solid transparent;
  font: inherit;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  cursor: pointer;
}

.pointcloud-demo__controls {
  position: absolute;
  z-index: 3;
  top: 4.65rem;
  left: 1rem;
  width: min(22rem, calc(100% - 2rem));
  color: rgba(255, 255, 255, .78);
  background: rgba(4, 30, 41, .88);
  border: 1px solid rgba(144, 217, 225, .28);
  backdrop-filter: blur(10px);
}

.pointcloud-demo__controls summary {
  display: flex;
  min-height: 2.65rem;
  padding: .7rem .9rem;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  list-style: none;
  text-transform: uppercase;
  cursor: pointer;
}

.pointcloud-demo__controls summary::-webkit-details-marker { display: none; }

.pointcloud-demo__controls summary i {
  width: .55rem;
  height: .55rem;
  border-right: 2px solid #79e2e7;
  border-bottom: 2px solid #79e2e7;
  transform: rotate(45deg) translate(-.1rem, .1rem);
  transition: transform .18s ease;
}

.pointcloud-demo__controls[open] summary {
  border-bottom: 1px solid rgba(144, 217, 225, .2);
}

.pointcloud-demo__controls[open] summary i {
  transform: rotate(225deg) translate(-.1rem, .1rem);
}

.pointcloud-demo__controls-body {
  display: grid;
  padding: .75rem .9rem;
  gap: .65rem;
}

.pointcloud-demo__control {
  display: grid;
  grid-template-columns: 6.3rem 1fr 3.8rem;
  gap: .65rem;
  align-items: center;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .045em;
  text-transform: uppercase;
}

.pointcloud-demo__control input {
  width: 100%;
  accent-color: #79e2e7;
  cursor: pointer;
}

.pointcloud-demo__control output {
  color: #fff;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.pointcloud-demo__toolbar button[aria-pressed="true"] {
  color: #062f3e;
  background: #79e2e7;
  border-color: #79e2e7;
}

.pointcloud-demo__reset {
  position: absolute;
  z-index: 3;
  top: 1rem;
  right: 1rem;
  color: #fff;
  background: rgba(4, 30, 41, .9);
  border-color: rgba(144, 217, 225, .35);
}

.pointcloud-demo__status {
  position: absolute;
  z-index: 2;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  min-width: 14rem;
  padding: .8rem 1rem;
  color: rgba(255, 255, 255, .7);
  background: rgba(4, 30, 41, .86);
  border-left: 2px solid #00c7d5;
  font-size: .7rem;
  letter-spacing: .05em;
  line-height: 1.55;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}

.pointcloud-demo__status strong { color: #fff; }

.pointcloud-demo__hint {
  position: absolute;
  z-index: 2;
  bottom: 1rem;
  left: 1rem;
  margin: 0;
  color: rgba(255, 255, 255, .64);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.pointcloud-demo__legend {
  display: flex;
  flex-wrap: wrap;
  padding: 1rem 1.15rem;
  gap: 1rem 1.5rem;
  color: #5f7077;
  background: #fff;
  border: 1px solid #d5e1e5;
  border-top: 0;
  font-size: .76rem;
}

.pointcloud-demo__legend span { display: inline-flex; align-items: center; gap: .5rem; }
.pointcloud-demo__legend i { width: .65rem; height: .65rem; border-radius: 50%; }
.pointcloud-demo__legend i:first-child { background: #a7bcc3; }
.pointcloud-demo__legend span:nth-child(2) i { background: #00d8df; }
.pointcloud-demo__legend span:nth-child(3) i { background: #1478ff; }
.pointcloud-demo__legend small { margin-left: auto; color: #7d8b90; }

@media (max-width: 800px) {
  .pointcloud-demo { padding-inline: 1.25rem; }
  .pointcloud-demo__header { grid-template-columns: 1fr; }
  .pointcloud-demo__stage { min-height: 31rem; }
  .pointcloud-demo__canvas { height: 31rem; }
  .pointcloud-demo__toolbar {
    right: 1rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: hidden;
  }
  .pointcloud-demo__toolbar button {
    min-width: 0;
    padding-inline: .35rem;
    font-size: .61rem;
  }
  .pointcloud-demo__reset { top: 4.65rem; }
  .pointcloud-demo__controls {
    top: 8.3rem;
    right: 1rem;
    width: auto;
  }
  .pointcloud-demo__control { grid-template-columns: 5.5rem 1fr 3.6rem; }
  .pointcloud-demo__hint { display: none; }
  .pointcloud-demo__status { right: auto; left: 1rem; min-width: 0; }
  .pointcloud-demo__legend { display: grid; gap: .65rem; }
  .pointcloud-demo__legend small { margin-left: 0; }
}

/* Tablet controls stay compact so the measured building remains the focus. */
@media (min-width: 601px) and (max-width: 1024px) {
  .pointcloud-demo__stage { min-height: 34rem; }
  .pointcloud-demo__canvas { height: 34rem; }

  .pointcloud-demo__toolbar {
    top: .75rem;
    right: auto;
    left: .75rem;
    display: flex;
    width: auto;
    padding: .2rem;
    gap: .15rem;
  }

  .pointcloud-demo__toolbar button,
  .pointcloud-demo__reset {
    min-height: 2.25rem;
    padding: .4rem .6rem;
    font-size: .6rem;
  }

  .pointcloud-demo__reset {
    top: .75rem;
    right: .75rem;
  }

  .pointcloud-demo__controls {
    top: 3.55rem;
    right: auto;
    left: .75rem;
    width: 14rem;
  }

  .pointcloud-demo__controls[open] {
    width: min(20rem, calc(100% - 1.5rem));
  }

  .pointcloud-demo__controls summary {
    min-height: 2.25rem;
    padding: .52rem .7rem;
    font-size: .62rem;
  }

  .pointcloud-demo__controls-body {
    padding: .65rem .7rem;
    gap: .5rem;
  }

  .pointcloud-demo__status {
    right: auto;
    bottom: .75rem;
    left: .75rem;
    min-width: 0;
    padding: .62rem .75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pointcloud-demo__canvas { cursor: default; }
}