.page-controls {
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.95);
  padding: 0.5rem;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
}
.page:hover .page-controls {
  opacity: 1;
}
.loading-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255, 255, 255, 0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  font-size: 1.2rem;
  display: none;
}