.site-communication-buttons {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-communication-button {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 2px solid #fff;
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 4px 14px rgb(0 0 0 / 24%);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.site-communication-button:hover,
.site-communication-button:focus-visible {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 7px 20px rgb(0 0 0 / 28%);
}

.site-communication-button:focus-visible {
  outline: 3px solid #171717;
  outline-offset: 3px;
}

.site-communication-button--whatsapp { background: #25d366; }
.site-communication-button--messenger { background: #0866ff; }

.site-communication-button svg {
  display: block;
  width: 29px;
  height: 29px;
  fill: currentColor;
}

@media (max-width: 480px) {
  .site-communication-buttons {
    right: max(14px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
    gap: 10px;
  }

  .site-communication-button {
    width: 50px;
    height: 50px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-communication-button { transition: none; }
}