.whatsapp-contact {
  position: fixed;
  left: calc(24px + env(safe-area-inset-left, 0px));
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 4px 16px rgb(0 0 0 / 22%);
  text-decoration: none;
}

.whatsapp-contact .fa-whatsapp {
  color: #fff;
  font-size: 36px;
  line-height: 1;
  animation: whatsapp-wiggle 5s ease-in-out infinite;
}

.whatsapp-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid #25d366;
  border-radius: inherit;
  pointer-events: none;
  animation: whatsapp-pulse 2.5s ease-out infinite;
}

@keyframes whatsapp-pulse {
  0% {
    transform: scale(1);
    opacity: 0.65;
  }
  75%, 100% {
    transform: scale(1.55);
    opacity: 0;
  }
}

@keyframes whatsapp-wiggle {
  0%, 4%, 12%, 20%, 100% {
    transform: rotate(0deg);
  }
  6%, 14% {
    transform: rotate(-12deg);
  }
  10%, 18% {
    transform: rotate(12deg);
  }
}

.whatsapp-contact:hover::before,
.whatsapp-contact:focus::before,
.whatsapp-contact:hover .fa-whatsapp,
.whatsapp-contact:focus .fa-whatsapp {
  animation-play-state: paused;
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-contact::before,
  .whatsapp-contact .fa-whatsapp {
    animation: none;
  }

  .whatsapp-contact::before {
    display: none;
  }
}

.whatsapp-contact:hover,
.whatsapp-contact:focus,
.whatsapp-contact:active,
.whatsapp-contact:focus-visible {
  background: #128c7e;
  color: #fff;
}

.whatsapp-contact:visited {
  color: #fff;
}

.whatsapp-contact:focus-visible {
  outline: 3px solid #24272c;
  outline-offset: 4px;
}

@media (max-width: 767px) {
  .whatsapp-contact {
    left: calc(16px + env(safe-area-inset-left, 0px));
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    width: 56px;
    height: 56px;
  }
}