.flying-heart {
  position: fixed;
  font-size: 24px;
  animation: heartFly 0.9s ease forwards;
  pointer-events: none;
}

@keyframes heartFly {
  0%   { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-60px) scale(1.6); opacity: 0; }
}