:root {
  --av-control-ink: oklch(97% 0.006 260);
  --av-control-border: oklch(97% 0.006 260 / 0.78);
  --av-control-glass: oklch(97% 0.006 260 / 0.11);
  --av-control-glass-hover: oklch(97% 0.006 260 / 0.16);
  --av-control-glass-active: oklch(82% 0.18 67 / 0.24);
  --av-control-shadow: oklch(5% 0.01 260 / 0.55);
  --av-control-hot: oklch(82% 0.18 67);
  --av-control-active-text: oklch(10% 0.015 260);
  --av-control-muted: oklch(84% 0.018 260);
  --av-control-unit: clamp(2.85rem, 4.5vw, 4.1rem);
  --av-key-gap: clamp(0.17rem, 0.31vw, 0.26rem);
  --av-control-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html,
body {
  background: var(--av-viewer-bg, rgb(102 102 102));
}

#av-bumblebee-overlay {
  position: fixed;
  inset: 0;
  z-index: 12;
  pointer-events: none;
  color: var(--av-control-ink);
  font-family: 'Space Grotesk', 'Space Grotesk Fallback', "Avenir Next", "Segoe UI", sans-serif;
}

#av-bumblebee-overlay,
#av-bumblebee-overlay * {
  box-sizing: border-box;
}

.av-scan-switch {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  left: max(1rem, env(safe-area-inset-left));
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.28rem;
  border: 1px solid var(--av-control-border);
  border-radius: 999px;
  background: var(--av-control-glass);
  box-shadow: none;
  pointer-events: auto;
  backdrop-filter: blur(14px) saturate(1.18);
  -webkit-backdrop-filter: blur(14px) saturate(1.18);
}

.av-scan-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.58rem 0.82rem;
  border-radius: 999px;
  color: var(--av-control-ink);
  font-size: 0.76rem;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background 160ms var(--av-control-ease),
    color 160ms var(--av-control-ease),
    transform 160ms var(--av-control-ease);
}

.av-scan-link:hover {
  background: var(--av-control-glass-hover);
}

.av-scan-link:active {
  transform: translateY(2px);
}

.av-scan-link[aria-current="page"] {
  background: var(--av-control-ink);
  color: var(--av-control-active-text);
}

.av-scan-link:focus-visible,
.av-key-button:focus-visible,
.av-mouse-button:focus-visible {
  outline: 3px solid var(--av-control-hot);
  outline-offset: 5px;
}

.av-control-row {
  --av-key-size: calc((var(--av-control-unit) - (2 * var(--av-key-gap))) / 3);
  --av-stroke: 1.5px;
  position: fixed;
  right: max(1.1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.75rem, 2.1vw, 2rem);
  pointer-events: none;
}

.av-control-unit {
  position: relative;
  z-index: 1;
  display: grid;
  min-width: var(--av-control-unit);
  justify-items: center;
  gap: 0.78rem;
}

.av-glyph-box {
  display: grid;
  width: var(--av-control-unit);
  height: var(--av-control-unit);
  place-items: center;
  color: var(--av-control-ink);
}

.av-wasd-pad {
  display: grid;
  grid-template-columns: repeat(3, var(--av-key-size));
  grid-template-rows: repeat(2, var(--av-key-size));
  gap: var(--av-key-gap);
  align-content: center;
  justify-content: center;
}

.av-key-button,
.av-mouse-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  pointer-events: auto;
  -webkit-tap-highlight-color: transparent;
}

.av-key-button {
  display: grid;
  width: var(--av-key-size);
  height: var(--av-key-size);
  min-width: 0;
  min-height: 0;
  place-items: center;
  padding: 0;
  border: var(--av-stroke) solid var(--av-control-border);
  border-radius: 0.18rem;
  background: var(--av-control-glass);
  box-shadow: none;
  color: var(--av-control-ink);
  font-family: 'Space Grotesk', 'Space Grotesk Fallback', "Avenir Next", "Segoe UI", sans-serif;
  font-size: calc(var(--av-control-unit) * 0.198);
  font-weight: 800;
  line-height: 1;
  transition:
    background 160ms var(--av-control-ease),
    box-shadow 160ms var(--av-control-ease),
    color 160ms var(--av-control-ease),
    transform 160ms var(--av-control-ease);
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
}

.av-key-button[data-control="w"] {
  grid-column: 2;
  grid-row: 1;
}

.av-key-button[data-control="a"] {
  grid-column: 1;
  grid-row: 2;
}

.av-key-button[data-control="s"] {
  grid-column: 2;
  grid-row: 2;
}

.av-key-button[data-control="d"] {
  grid-column: 3;
  grid-row: 2;
}

.av-key-button:hover {
  background: var(--av-control-glass-hover);
}

.av-key-button.is-live,
.av-key-button:active {
  color: var(--av-control-hot);
  background: var(--av-control-glass-active);
  border-color: var(--av-control-hot);
  box-shadow: none;
  transform: translateY(3px);
}

.av-mouse-button {
  width: var(--av-control-unit);
  height: var(--av-control-unit);
  padding: 0;
}

.av-mouse-button:focus-visible {
  outline: 0;
}

.av-mouse-button:focus-visible .av-mouse-outline {
  border-color: var(--av-control-hot);
  box-shadow: none;
}

.av-mouse-outline {
  position: relative;
  display: block;
  width: 44.7%;
  height: 70.8%;
  margin: auto;
  border: var(--av-stroke) solid var(--av-control-border);
  border-radius: 48% 48% 42% 42% / 34% 34% 44% 44%;
  background: var(--av-control-glass);
  box-shadow: none;
  transition:
    background 160ms var(--av-control-ease),
    box-shadow 160ms var(--av-control-ease),
    border-color 160ms var(--av-control-ease),
    transform 160ms var(--av-control-ease);
}

.av-mouse-outline::before {
  content: "";
  position: absolute;
  inset-block-start: 10%;
  inset-inline-start: 50%;
  width: var(--av-stroke);
  height: 22%;
  border-radius: 999px;
  background: var(--av-control-border);
  opacity: 0.9;
  transform: translateX(-50%);
}

.av-mouse-outline::after {
  content: "";
  position: absolute;
  inset-block-start: 35%;
  inset-inline-start: 18%;
  inline-size: 64%;
  block-size: var(--av-stroke);
  background: var(--av-control-border);
  opacity: 0.34;
}

.av-mouse-button:hover:not(.is-live) .av-mouse-outline {
  background: var(--av-control-glass);
  box-shadow: none;
}

.av-mouse-button.is-live .av-mouse-outline,
.av-mouse-button:active .av-mouse-outline {
  border-color: var(--av-control-hot);
  background: var(--av-control-glass-active);
  box-shadow: none;
  transform: translateY(3px);
}

.av-caption {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.25rem;
  padding: 0.22rem 0.38rem;
  border: 1px solid var(--av-control-border);
  border-radius: 0.32rem;
  background: var(--av-control-glass);
  box-shadow: none;
  color: var(--av-control-ink);
  font-size: clamp(0.58rem, 0.7vw, 0.72rem);
  font-weight: 950;
  line-height: 1;
  text-align: center;
  text-transform: uppercase;
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
}

@media (max-width: 760px) {
  :root {
    --av-control-unit: clamp(2.8rem, 16vw, 3.5rem);
  }

  .av-scan-switch {
    left: 50%;
    transform: translateX(-50%);
  }

  .av-control-row {
    right: 50%;
    bottom: max(0.8rem, env(safe-area-inset-bottom));
    gap: 0.55rem;
    transform: translateX(50%);
  }

  .av-caption {
    min-height: 1.15rem;
    font-size: 0.58rem;
  }
}

@media (max-width: 430px) {
  :root {
    --av-control-unit: clamp(2.55rem, 15vw, 3.1rem);
  }

  .av-control-row {
    gap: 0.32rem;
  }

  .av-caption {
    font-size: 0.52rem;
  }

  .av-scan-link {
    min-height: 2.1rem;
    padding-inline: 0.64rem;
    font-size: 0.7rem;
  }
}

/* Su telefoni e tablet non ci sono tasti ne' mouse: si trascina e si pizzica (2026-09-29,
   iPhone 12 in orizzontale: la fila W A S D e mouse compariva sopra la scena). Via anche la
   scelta Default / Full Scan del Bumblebee: in alto al centro copriva l'HUD in verticale e i
   bottoni delle demo in orizzontale, e sul telefono il motore disegna al massimo 2 milioni di
   punti, quindi i 7,8 milioni (24,8 MB) della scansione completa pesano senza vedersi. */
@media (hover: none), (pointer: coarse) {
  .av-control-row,
  .av-scan-switch {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .av-scan-link,
  .av-key-button,
  .av-mouse-outline {
    transition-duration: 0.01ms !important;
  }
}