#loadingOverlay {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(255, 255, 255, 0.7);
  z-index: 9999;
  text-align: center;
  font-size: 18px;
  color: #333;
}

#loadingOverlay .spinner-box {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#loadingOverlay .spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3b82f6;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

#loadingOverlay .spinner-text {
  margin: 0;
  line-height: 1.4;
}

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