/* =================================================================
   Floating actions — the back-to-top button pinned to the bottom
   inline-end corner. Hidden until the page is scrolled
   (.floating-actions--visible, set by js/components/floating-actions.js).
   While hidden it is also visibility: hidden, so the keyboard can't land
   on an invisible button (visibility switches after the fade-out).
   ================================================================= */

.floating-actions {
  position: fixed;
  bottom: 2.4rem;
  inset-inline-end: 2rem;
  z-index: var(--z-floating);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(1.2rem);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s linear 0.3s;
}

.floating-actions--visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition-delay: 0s;
}

.floating-actions__button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.8rem;
  height: 4.8rem;
  border: 0.15rem solid var(--color-border);
  border-radius: 50%;
  /* White with a shadow, so it stands out over light and dark sections alike */
  background: var(--color-paper);
  color: var(--color-teal-deep);
  box-shadow: 0 0.6rem 1.6rem rgb(var(--color-ink-rgb) / 0.3);
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.floating-actions__button:hover {
  border-color: var(--color-amber);
  background: var(--color-amber);
  color: var(--color-ink);
  transform: translateY(-0.2rem);
}

.floating-actions__icon { width: 2rem; height: 2rem; }