/* Lightweight winter snow effect */
.snow-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 9999;
}
.snowflake {
  position: absolute;
  top: -20px;
  color: rgba(255,255,255,.85);
  font-size: 10px;
  opacity: .75;
  animation: snowfall linear infinite;
  filter: blur(.1px);
}
@keyframes snowfall {
  0% { transform: translate3d(0,-20px,0) rotate(0deg); }
  100% { transform: translate3d(40px,110vh,0) rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
  .snowflake { animation: none; display:none; }
}