.fixed-action button {
  position: relative;
  animation: cta-breathe 1.45s ease-in-out infinite;
  filter: drop-shadow(0 0 2px rgba(255, 219, 97, 0.75));
}

.fixed-action button::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 6px 17px;
  border-radius: 28px;
  background: rgba(255, 74, 13, 0.62);
  box-shadow: 0 0 7px #ffcd55, 0 0 16px rgba(255, 75, 9, 0.9);
  animation: cta-glow 1.45s ease-in-out infinite;
}

.fixed-action button::after {
  content: "";
  position: absolute;
  z-index: 2;
  top: 6px;
  bottom: 6px;
  left: 21px;
  width: 42px;
  border-radius: 50%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.72), transparent);
  filter: blur(1px);
  transform: skewX(-18deg);
  animation: cta-shine 2.15s ease-in-out infinite;
  pointer-events: none;
}

.fixed-action img {
  position: relative;
  z-index: 1;
}

@keyframes cta-breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.035); }
}

@keyframes cta-glow {
  0%, 100% { opacity: 0.45; transform: scale(0.97); }
  50% { opacity: 1; transform: scale(1.035); }
}

@keyframes cta-shine {
  0%, 18% { left: 21px; opacity: 0; }
  28% { opacity: 1; }
  58%, 100% { left: 272px; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .fixed-action button,
  .fixed-action button::before,
  .fixed-action button::after {
    animation: none;
  }
}