/* Bouton WhatsApp flottant */
.astellia-whatsapp-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background-color: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  z-index: 999;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.astellia-whatsapp-btn svg {
  width: 28px;
  height: 28px;
}
.astellia-whatsapp-btn:hover,
.astellia-whatsapp-btn:focus-visible {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
}
.astellia-whatsapp-btn:focus-visible {
  outline: 3px solid #0c233f;
  outline-offset: 3px;
}
/* Ordinateur : centré sous la colonne des réseaux sociaux (50px, collée à droite) */
@media (min-width: 769px) {
  .astellia-whatsapp-btn {
    width: 50px;
    height: 50px;
    right: 0;
  }
}
@media (max-width: 768px) {
  .astellia-whatsapp-btn {
    width: 48px;
    height: 48px;
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    right: calc(18px + env(safe-area-inset-right, 0px));
  }
  .astellia-whatsapp-btn svg {
    width: 24px;
    height: 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .astellia-whatsapp-btn { transition: none; }
  .astellia-whatsapp-btn:hover, .astellia-whatsapp-btn:focus-visible { transform: none; }
}
@media print {
  .astellia-whatsapp-btn { display: none; }
}