:root {
  --bird-shell-safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Let each opt-in surface reclaim the space its fixed dock normally reserves. */
html[data-bird-nav-visible="false"] {
  --toolbar-h: 0px !important;
  --bottom-h: 0px !important;
  --classic-bottom: 0px !important;
  --dock-height: 0px !important;
}

[data-bird-context-dock][hidden],
html[data-bird-nav-visible="false"] [data-bird-context-dock] {
  display: none !important;
}

[data-bird-context-dock] {
  transition: opacity .18s ease, filter .18s ease, transform .18s ease;
}

[data-bird-context-dock][data-nav-locked="true"] {
  opacity: .68;
  filter: grayscale(.34) saturate(.72);
}

[data-bird-context-dock][data-nav-locked="true"] a,
[data-bird-context-dock][data-nav-locked="true"] button {
  cursor: not-allowed !important;
  pointer-events: none !important;
}

[data-bird-nav-controls] {
  display: grid;
  gap: .55rem;
  margin-block: .8rem;
  padding-block: .8rem;
  border-block: 1px solid rgba(192, 241, 222, .18);
}

[data-bird-nav-controls]::before {
  color: currentColor;
  content: "Bird navigation";
  font-size: .74rem;
  font-weight: 900;
  letter-spacing: .12em;
  opacity: .72;
  text-transform: uppercase;
}

[data-bird-nav-controls] button {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: .72rem .8rem;
  border: 1px solid rgba(192, 241, 222, .25);
  border-radius: 14px;
  color: #fff9e9;
  background: rgba(17, 62, 64, .72);
  font: inherit;
  font-weight: 800;
  text-align: left;
  touch-action: manipulation;
}

[data-bird-nav-controls] button[aria-pressed="true"] {
  border-color: #8cf0d0;
  color: #061b20;
  background: #8cf0d0;
}

[data-bird-nav-controls] button strong {
  flex: 0 0 auto;
  font-size: .82rem;
}

[data-bird-care-hold][data-holding="true"] {
  box-shadow: 0 0 0 4px rgba(140, 240, 208, .3), 0 7px 18px rgba(77, 58, 29, .2) !important;
}

@media (prefers-reduced-motion: reduce) {
  [data-bird-context-dock] { transition: none; }
}