/* Global page loading overlay */
#appPageLoader {
  position: fixed;
  inset: 0;
  z-index: 200000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(2px);
}
#appPageLoader.show { display: flex; }
#appPageLoader .loader-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 18px 40px rgba(15,23,42,.25);
  display: flex;
  align-items: center;
  gap: .85rem;
  min-width: 190px;
}
#appPageLoader .spinner {
  width: 28px;
  height: 28px;
  border: 3px solid #e2e8f0;
  border-top-color: var(--sf-accent, #0f766e);
  border-radius: 50%;
  animation: appSpin .7s linear infinite;
}
@keyframes appSpin { to { transform: rotate(360deg); } }
button.is-loading, .btn.is-loading {
  position: relative;
  pointer-events: none;
  opacity: .85;
}