/* Top bar: history arrows, current passage (opens the navigator), menus. */
.topbar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: var(--safe-t) calc(6px + var(--safe-r)) 0 calc(6px + var(--safe-l));
  color: var(--text-dim);
  z-index: 2;
}

.topbar__btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex: none;
}
.topbar__btn:disabled { opacity: .25; cursor: default; }
.topbar__btn:not(:disabled):active { background: var(--surface); }

.topbar__title {
  flex: 1;
  min-width: 0;
  height: 40px;
  border-radius: 20px;
  text-align: center;
}
.topbar__title:active { background: var(--surface); }

.topbar__ref {
  display: block;
  overflow: hidden;
  font-size: 14px;
  letter-spacing: .02em;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--text-dim);
}

.topbar { position: relative; }

/* sync problem: a small dot on the menu button */
.topbar__btn { position: relative; }
.topbar__btn.has-alert::after {
  content: "";
  position: absolute;
  top: 9px; right: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--danger);
}