@keyframes currencyRain {
  0% {
    transform: translateY(-60px) rotate(0deg) translateZ(0);
    opacity: 0;
  }
  5% {
    opacity: 0.9;
  }
  95% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(calc(100vh + 120px)) rotate(360deg) translateZ(0);
    opacity: 0;
  }
}

.currency-rain {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 5;
  will-change: auto;
}

.currency {
  position: absolute;
  display: inline-block;
  color: rgba(255, 255, 255, 0.85);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
  pointer-events: none;
  animation: currencyRain linear infinite;
  will-change: transform, opacity;
  backface-visibility: hidden;
  transform: translateZ(0);
  font-weight: 500;
}