#ping-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.7); /* or rgba(0,0,0,0.5) for dark overlay */
  z-index: 9998;
}
#ping-spinner {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  /* rest of spinner styles */
  z-index: 9999;
}
#ping-spinner::before {
  content: '';
  width: 50px;
  height: 50px;
  border: 5px solid rgba(0,0,0,0.1);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: block;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}