.header-tools { display:flex; align-items:center; gap:12px; }
.display-action { display:inline-flex; align-items:center; justify-content:center; gap:6px; border-radius:8px; }
.topbar .display-action[hidden] { display:none; }
.topbar .quiet-action { display:inline-flex; align-items:center; justify-content:center; text-decoration:none; }
.topbar nav { gap:4px; }
@media(max-width:600px) {
  body[data-page="workspace"] .topbar { height:auto; min-height:64px; padding-block:10px; flex-wrap:wrap; gap:4px 12px; }
  body[data-page="workspace"] .topbar nav { flex-wrap:wrap; justify-content:flex-end; margin-left:auto; }
  .display-action [data-fullscreen-label] { display:none; }
}