/* BlackBook v14.6.2 — persistent double-island navigation.
   Navigation islands remain mounted during internal workspace navigation; only
   the page region and page-specific topbar state are replaced. */
.bb-persistent-nav-v1462.bb-soft-nav-loading #navigationShell,
.bb-persistent-nav-v1462.bb-soft-nav-loading .bb-nav-orbit-v1442 {
  opacity: 1 !important;
  visibility: visible !important;
  filter: none !important;
}
.bb-persistent-nav-v1462 #pageContentRegion {
  min-height: calc(100vh - 110px);
}
.bb-persistent-nav-v1462 #pageContentRegion[aria-busy="true"] {
  cursor: progress;
}
.bb-persistent-nav-v1462 .bb-topbar::after {
  content: "";
  position: absolute;
  z-index: 5;
  left: 18px;
  right: 18px;
  bottom: -1px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--bb-domain-accent), transparent);
  opacity: 0;
  transform: scaleX(.22);
  transform-origin: center;
  pointer-events: none;
}
.bb-persistent-nav-v1462.bb-soft-nav-loading .bb-topbar::after {
  opacity: .72;
  animation: bb-soft-nav-progress-v1462 .85s ease-in-out infinite;
}
@keyframes bb-soft-nav-progress-v1462 {
  0% { transform: translateX(-28%) scaleX(.22); }
  50% { transform: translateX(0) scaleX(.62); }
  100% { transform: translateX(28%) scaleX(.22); }
}
@media (prefers-reduced-motion: reduce) {
  .bb-persistent-nav-v1462.bb-soft-nav-loading .bb-topbar::after { animation: none; transform: scaleX(.55); }
}