Glass Dock

<div class="nuda-glass-dock" role="toolbar" aria-label="Application dock">
  <button class="nuda-glass-dock__app" aria-label="App one"></button>
  <button class="nuda-glass-dock__app" aria-label="App two"></button>
  <button class="nuda-glass-dock__app" aria-label="App three"></button>
  <button class="nuda-glass-dock__app" aria-label="App four"></button>
</div>

/* Glass Dock
   Frosted bottom dock; icons magnify on hover (macOS-style).
   Customize: --glass-dock-accent */

.nuda-glass-dock {
  --glass-dock-accent: #e4ff54;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.4);
}

.nuda-glass-dock__app {
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 11px;
  background: linear-gradient(135deg, #e4ff54, #a3c93a);
  cursor: pointer;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: bottom center;
  will-change: transform;
  padding: 0;
}

.nuda-glass-dock__app:nth-child(2) { background: linear-gradient(135deg, #7dd3fc, #38bdf8); }
.nuda-glass-dock__app:nth-child(3) { background: linear-gradient(135deg, #f0abfc, #d946ef); }
.nuda-glass-dock__app:nth-child(4) { background: linear-gradient(135deg, #fda4af, #fb7185); }

.nuda-glass-dock__app:hover,
.nuda-glass-dock__app:focus-visible {
  transform: scale(1.35) translateY(-6px);
  outline: none;
}

.nuda-glass-dock__app:focus-visible {
  box-shadow: 0 0 0 3px rgba(228, 255, 84, 0.6);
}

/* Neighbour gets a smaller lift for the magnify falloff. */
.nuda-glass-dock__app:hover + .nuda-glass-dock__app,
.nuda-glass-dock__app:focus-visible + .nuda-glass-dock__app {
  transform: scale(1.15) translateY(-3px);
}

@media (prefers-reduced-motion: reduce) {
  .nuda-glass-dock__app { transition: none; }
  .nuda-glass-dock__app:hover,
  .nuda-glass-dock__app:focus-visible { transform: scale(1.12); }
}