.center {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

#splash-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#splash {
  margin-bottom: 20px;
}

.loader {
  border: 4px solid #f3f3f3;
  border-radius: 50%;
  border-top: 4px solid #3498db;
  width: 40px;
  height: 40px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

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

@media (prefers-color-scheme: dark) {
  .loader {
    border-top: 4px solid #90caf9; /* A lighter blue for dark mode */
  }
}