/**
 * Full-screen navigation loading overlay (WebView / in-app browser UX).
 */

.ms-nav-loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  pointer-events: none;
}

html.ms-nav-loading-active .ms-nav-loading-overlay {
  display: flex;
}

.ms-nav-loading-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 2rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

@media (prefers-color-scheme: dark) {
  .ms-nav-loading-inner {
    background: rgba(30, 41, 59, 0.95);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  }

  .ms-nav-loading-text {
    color: #e2e8f0;
  }
}

.ms-nav-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(100, 116, 139, 0.35);
  border-top-color: #f59e0b;
  border-radius: 50%;
  animation: ms-nav-spin 0.75s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .ms-nav-loading-spinner {
    animation: none;
    border-color: rgba(245, 158, 11, 0.35);
    border-top-color: #f59e0b;
    opacity: 0.9;
  }
}

@keyframes ms-nav-spin {
  to {
    transform: rotate(360deg);
  }
}

.ms-nav-loading-text {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: #334155;
  letter-spacing: 0.02em;
}