body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5); /* Adjust opacity to control dimness */
  z-index: 0;
  pointer-events: none; /* Allows clicks to pass through */
  backdrop-filter: blur(2px);
}

/* Make sure your content sits above the dim layer */
body > * {
  position: relative;
  z-index: 1;
}