:root {
  --scroll-height-vh: 700;
  --showroom-scroll-height-vh: 140;
  background: #000;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  margin: 0;
  padding: 0;
  overflow-x: clip;
  background: #000;
}

html {
  overscroll-behavior: none;
}

body {
  min-height: 100%;
  font-family: Arial, Helvetica, sans-serif;
}

#scroll-sequence {
  position: relative;
  height: calc((var(--scroll-height-vh) + var(--showroom-scroll-height-vh)) * 1vh);
  background: #000;
}

.sticky-stage {
  position: sticky;
  top: 0;
  width: 100vw;
  width: 100dvw;
  height: var(--stage-height, 100vh);
  overflow: hidden;
  background: #000;
}

#hero-canvas {
  position: relative;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.showroom-ui,
.showroom-dimmer,
.showroom-categories {
  position: absolute;
  inset: 0;
}

.showroom-ui {
  z-index: 1;
  pointer-events: none;
  --ui-opacity: 0;
  --dimmer-opacity: 0;
}

.showroom-dimmer {
  background: #000;
  opacity: var(--dimmer-opacity);
  transition: opacity 160ms linear;
}

.showroom-categories {
  opacity: var(--ui-opacity);
  transition: opacity 120ms linear;
}

.showroom-category {
  position: absolute;
  display: inline-flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.3rem 0;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  background: transparent;
  color: #fff;
  font: inherit;
  letter-spacing: 0.04em;
  text-align: left;
  cursor: pointer;
  opacity: calc(0.45 + (var(--number-reveal) * 0.55));
  transition: opacity 180ms ease, border-color 180ms ease, color 180ms ease;
}

.category-number {
  color: #e2231a;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  opacity: var(--number-reveal);
  transform: translateY(calc((1 - var(--number-reveal)) * 1rem));
  transition: opacity 160ms ease, transform 220ms ease;
}

.category-name {
  font-size: clamp(0.82rem, 1.05vw, 1rem);
  font-weight: 500;
  letter-spacing: 0.16em;
  opacity: var(--name-reveal);
  transform: translateY(calc((1 - var(--name-reveal)) * 1rem));
  transition: opacity 180ms ease, transform 260ms ease;
}

.showroom-category[data-category='residential'] {
  left: 9vw;
  top: 57%;
}

.showroom-category[data-category='industrial'] {
  left: 43.5vw;
  top: 37%;
}

.showroom-category[data-category='access-control'] {
  right: 8.5vw;
  top: 57%;
}

.showroom-ui.is-interactive {
  pointer-events: auto;
}

@media (hover: hover) and (pointer: fine) {
  .showroom-category:hover,
  .showroom-category:focus-visible,
  .showroom-category.is-selected {
    border-color: #e2231a;
    color: #fff;
    opacity: 1;
    outline: 0;
  }

  .showroom-ui.is-interactive:has(.showroom-category:hover) .showroom-dimmer,
  .showroom-ui.is-interactive:has(.showroom-category.is-selected) .showroom-dimmer {
    opacity: max(var(--dimmer-opacity), 0.16);
  }
}

@media (orientation: portrait) and (pointer: coarse) and (max-width: 767px) {
  .showroom-categories {
    inset: 0;
    display: block;
  }

  .showroom-category[data-category] {
    position: absolute;
    width: max-content;
    min-height: 2.6rem;
    gap: 0.75rem;
    touch-action: manipulation;
  }

  /* Align labels with the three physical showroom zones in the 9:16 composition. */
  .showroom-category[data-category='industrial'] {
    top: 42%;
    left: 50%;
    right: auto;
    bottom: auto;
    transform: translate(-50%, -50%);
  }

  .showroom-category[data-category='access-control'] {
    top: 33%;
    left: 8%;
    right: auto;
    bottom: auto;
  }

  .showroom-category[data-category='residential'] {
    top: 50%;
    right: 8%;
    left: auto;
    bottom: auto;
  }

  .category-name {
    font-size: 0.82rem;
    letter-spacing: 0.13em;
  }

  .showroom-category.is-selected {
    border-color: #e2231a;
    color: #fff;
    opacity: 1;
  }

  .showroom-ui.is-interactive:has(.showroom-category.is-selected) .showroom-category:not(.is-selected) {
    opacity: 0.4;
  }

  .showroom-ui.is-interactive:has(.showroom-category.is-selected) .showroom-dimmer {
    opacity: max(var(--dimmer-opacity), 0.16);
  }
}