cleanup

frontend/src/styles/preview/preview-zoom.css

@@ -74,60 +74,6 @@
   align-items: flex-start;
 }
 
-.preview-zoom__nav {
-  position: absolute;
-  bottom: 1em;
-  left: 50%;
-  transform: translateX(-50%);
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  gap: 0.9rem;
-  opacity: 0;
-  transition: opacity 0.18s ease;
-  pointer-events: none;
-}
-
-.preview-zoom__stage:hover .preview-zoom__nav,
-.preview-zoom__stage:focus-within .preview-zoom__nav {
-  opacity: 1;
-  pointer-events: auto;
-}
-
-.preview-zoom__nav-button {
-  width: 2.8rem;
-  height: 2.8rem;
-  border: none;
-  border-radius: 999px;
-  background: var(--preview-nav-bg);
-  color: var(--preview-nav-fg);
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  cursor: pointer;
-  z-index: 1;
-  transition: background 0.15s ease, transform 0.15s ease;
-  box-shadow: 0 12px 28px var(--shadow-strong);
-}
-
-.preview-zoom__nav-button:hover {
-  background: var(--preview-nav-bg-hover);
-}
-
-.preview-zoom__nav-button:focus-visible {
-  outline: 2px solid var(--accent);
-  outline-offset: 3px;
-}
-
-.preview-zoom__nav-button svg {
-  width: 1.5rem;
-  height: 1.5rem;
-}
-
-.preview-zoom__nav-button[disabled] {
-  opacity: 0.35;
-  cursor: default;
-}
 
 .preview-zoom__pdf {
   width: 100%;