:root {
  --whatsapp-green: #25d366;
  --whatsapp-green-dark: #1fb857;
  --whatsapp-shadow: 0 16px 34px rgba(37, 211, 102, 0.28);
}

.whatsapp-float {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 1200;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--whatsapp-green), var(--whatsapp-green-dark));
  color: #ffffff;
  box-shadow: var(--whatsapp-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  animation: whatsapp-float-in 0.5s ease-out both;
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 20px 36px rgba(37, 211, 102, 0.34);
  filter: saturate(1.04);
}

.whatsapp-float:focus-visible {
  outline: 3px solid rgba(37, 211, 102, 0.24);
  outline-offset: 4px;
}

.whatsapp-float svg {
  width: 31px;
  height: 31px;
  fill: currentColor;
}

@keyframes whatsapp-float-in {
  from {
    opacity: 0;
    transform: translate3d(0, 16px, 0) scale(0.92);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

@media (max-width: 767px) {
  .whatsapp-float {
    width: 56px;
    height: 56px;
    right: max(14px, env(safe-area-inset-right));
    bottom: max(14px, env(safe-area-inset-bottom));
  }

  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}