.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.loader {
  width: 40px;
  height: 40px;
  border: 3px solid #e0e0e0; /* light gray track */
  border-top: 3px solid #333; /* dark accent */
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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