@keyframes flame-glow {
  0% { 
    box-shadow: 0 0 10px #ff4500, 0 0 20px #ff8c00, 0 0 30px #ffd700;
  }
  50% { 
    box-shadow: 0 0 25px #ff4500, 0 0 50px #ff8c00, 0 0 75px #ffd700;
  }
  100% { 
    box-shadow: 0 0 10px #ff4500, 0 0 20px #ff8c00, 0 0 30px #ffd700;
  }
}

.donation-artifact {
  animation: flame-glow 2.5s infinite ease-in-out;
  z-index: 10;
  overflow: visible !important;
}

@keyframes legendary-glow {
  0% { box-shadow: 0 0 5px #fd7e14; }
  50% { box-shadow: 0 0 20px #fd7e14; }
  100% { box-shadow: 0 0 5px #fd7e14; }
}

.donation-legendary {
  animation: legendary-glow 2s infinite ease-in-out;
}

@keyframes epic-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.donation-epic {
  background-image: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.2), rgba(255,255,255,0));
  background-size: 200% 100%;
  animation: epic-shimmer 3s infinite linear;
}