/* Editor: a preview beside a settings panel (settings.css) */
.editor{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:16px;
  align-items:start;margin-top:4px;
}

/* Preview */
.preview{position:sticky;top:16px;padding:16px;display:flex;flex-direction:column;gap:12px}
.preview-stage{
  position:relative;
  display:flex;align-items:center;justify-content:center;
  min-height:240px;
  border-radius:10px;background:rgba(0,0,0,.25);
  padding:12px;
}
/* The page drawn by pdf.js */
.preview-stage canvas{
  display:block;max-width:100%;height:auto;
  border-radius:2px;
  box-shadow:0 10px 36px -12px rgba(0,0,0,.8);
}
.preview-note{
  position:absolute;left:12px;right:12px;bottom:12px;margin:0;
  padding:8px 10px;border-radius:8px;
  background:rgba(8,10,18,.85);border:1px solid var(--line);
  font-size:13px;color:var(--muted);text-align:center;
}
.preview-nav{display:flex;align-items:center;justify-content:center;gap:14px}
.preview-nav .icon-btn{width:34px;height:34px}
.preview-nav .icon-btn:disabled{opacity:.3;cursor:default}

@media (max-width:860px){
  .editor{grid-template-columns:1fr}
  .preview{position:static}
}