#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.3s ease-out;
  pointer-events: none;
  opacity: 1;
}

#loader.light {
  background-color: rgba(255, 255, 255, 0.95);
}

#loader.dark {
  background-color: rgba(0, 0, 0, 0.95);
}

#loader .spinner-image {
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
}

#loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}