.site-whatsapp-button {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 56px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: #1f9d61;
  color: #fff !important;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none !important;
  box-shadow: 0 14px 38px rgba(4, 28, 22, 0.3);
  transition: transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.site-whatsapp-button::before {
  content: "";
  position: absolute;
  inset: -6px;
  z-index: -1;
  border: 1px solid rgba(37, 211, 102, 0.34);
  border-radius: inherit;
  animation: whatsapp-soft-pulse 2.5s ease-out infinite;
}

.site-whatsapp-button:hover {
  background: #168251;
  color: #fff !important;
  transform: translateY(-3px);
  box-shadow: 0 18px 44px rgba(4, 28, 22, 0.36);
}

.site-whatsapp-button:focus-visible {
  outline: 3px solid rgba(37, 211, 102, 0.38);
  outline-offset: 4px;
}

.site-whatsapp-button svg {
  flex: 0 0 auto;
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes whatsapp-soft-pulse {
  0%, 55% { opacity: 0; transform: scale(0.96); }
  75% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.12); }
}

@media (max-width: 600px) {
  .site-whatsapp-button {
    right: 14px;
    bottom: 14px;
    width: 54px;
    min-height: 54px;
    padding: 0;
    justify-content: center;
  }

  .site-whatsapp-button span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-whatsapp-button,
  .site-whatsapp-button::before {
    animation: none;
    transition: none;
  }
}