.whatsapp-bubble {
  position: fixed;
  right: max(24px, env(safe-area-inset-right));
  bottom: calc(24px + env(safe-area-inset-bottom));
  z-index: 2001;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #d0feb0;
  color: #002d4b;
  box-shadow: 0 5px 20px rgba(0, 45, 75, .22);
  text-decoration: none;
  transition: background .2s ease, box-shadow .2s ease;
}
.whatsapp-bubble svg { width: 32px; height: 32px; }
.whatsapp-bubble:hover,
.whatsapp-bubble:focus-visible {
  background: #bff297;
  box-shadow: 0 7px 24px rgba(0, 45, 75, .3);
}
.whatsapp-bubble:focus-visible { outline: 3px solid #002d4b; outline-offset: 4px; }
.whatsapp-bubble__label {
  position: absolute;
  right: calc(100% + 12px);
  padding: 12px 16px;
  border-radius: 12px;
  background: #002d4b;
  color: #fff;
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0, 45, 75, .16);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, visibility .2s ease;
}
.whatsapp-bubble:hover .whatsapp-bubble__label,
.whatsapp-bubble:focus-visible .whatsapp-bubble__label { opacity: 1; visibility: visible; }
@media (max-width: 600px) {
  .whatsapp-bubble {
    width: 56px;
    height: 56px;
    right: max(16px, env(safe-area-inset-right));
    bottom: calc(16px + env(safe-area-inset-bottom));
  }
  .whatsapp-bubble__label { font-size: 12px; padding: 10px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-bubble, .whatsapp-bubble__label { transition: none; }
}