.spinner-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

.spinner-container.core-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.38), rgba(255, 255, 255, 0.18));
}

/* Spinner style */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-top: 4px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
#pageContent {
  position: relative;
  transition: opacity 0.16s ease, transform 0.16s ease;
  will-change: opacity, transform;
}

body.core-language-switching #pageContent {
  transition: none;
  animation: none;
  will-change: auto;
}

body.core-language-switching #pageContent.core-transition-out,
body.core-language-switching #pageContent.core-transition-in {
  opacity: 1;
  transform: none;
  animation: none;
}

body.core-language-switching #pageContent .spinner-container.core-overlay {
  background: transparent;
}

#pageContent.core-transition-out {
  opacity: 0.55;
  transform: translateY(4px);
}

#pageContent.core-transition-in {
  animation: pageContentIn 0.2s ease both;
}

@keyframes pageContentIn {
  0% {
    opacity: 0.7;
    transform: translateY(7px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
li.nav-item > span {
  cursor: pointer;
}

/* Keep modal and backdrop layering stable across dynamic content transitions. */
.modal-backdrop {
  z-index: 1050 !important;
}

.modal {
  z-index: 1055 !important;
}

.modal .modal-dialog {
  position: relative;
  z-index: 1056;
}