/* Jemný sněhový prach (vánoční téma) */
.snowflake {
  position: fixed;
  top: -1.5em;
  pointer-events: none;
  user-select: none;
  z-index: 10;
  will-change: transform, opacity;
}

.snowflake.snowball {
  width: var(--sz, 3px);
  height: var(--sz, 3px);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  box-shadow:
    0 0 2px rgba(255, 255, 255, 0.45),
    0 0 5px rgba(186, 230, 253, 0.2);
  animation-name: snow-fall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes snow-fall {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(var(--drift, 0vw), 108vh, 0);
  }
}