phanpy/src/components/shortcuts.css

#shortcuts-button {
  position: fixed;
  bottom: 16px;
  bottom: max(16px, env(safe-area-inset-bottom));
  left: 16px;
  left: max(16px, env(safe-area-inset-left));
  padding: 16px;
  background-color: var(--bg-faded-blur-color);
  z-index: 101;
  transition: all 0.3s ease-in-out;
  border: var(--hairline-width) solid var(--bg-color);
  box-shadow: inset 0 -4px 16px -8px var(--button-bg-blur-color),
    0 3px 8px -1px var(--drop-shadow-color);
}
#shortcuts-button .icon {
  transform: translateY(2px); /* Balance the icon's vertical alignment */
}
#app:has(header[hidden]) #shortcuts-button,
#shortcuts-button[hidden] {
  transform: translateY(200%);
  pointer-events: none;
  user-select: none;
}
#shortcuts-button:is(:hover, :focus) {
  background-color: var(--bg-color);
  filter: none;
}
#shortcuts-button:active {
  transform: scale(0.95);
  transition: none;
}

@media (min-width: calc(40em + 56px + 8px)) {
  #shortcuts-button {
    right: 16px;
    right: max(16px, env(safe-area-inset-right));
    left: auto;
    top: 16px;
    top: max(16px, env(safe-area-inset-top));
    bottom: auto;
  }
  #app:has(header[hidden]) #shortcuts-button,
  #shortcuts-button[hidden] {
    transform: translateY(-200%);
  }
}