/**
 * WhatsApp Floating Button — First Aid Fast
 * UX Spec §Component Library › 6. WhatsApp Floating Button
 */

/* --------------------------------------------------------------------------
   BUTTON
   -------------------------------------------------------------------------- */
.whatsapp-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: var(--z-whatsapp);

  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);

  background: var(--color-whatsapp);
  color: #FFFFFF;
  text-decoration: none;
  cursor: pointer;

  box-shadow: var(--shadow-whatsapp);
  transition:
    background-color var(--transition-base),
    transform var(--transition-spring),
    box-shadow var(--transition-base);

  border: none;
  outline: none;
}

.whatsapp-btn:hover {
  background: var(--color-whatsapp-hover);
  transform: scale(1.08);
  box-shadow: var(--shadow-lg);
  color: #FFFFFF;
}

.whatsapp-btn:active {
  transform: scale(0.96);
  box-shadow: var(--shadow-sm);
}

.whatsapp-btn:focus-visible {
  outline: 3px solid var(--color-primary-500);
  outline-offset: 3px;
}

/* Icon */
.whatsapp-btn__icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   TOOLTIP (shown when WA number not yet configured)
   UX Spec: dark bg, white text, 3s auto-dismiss on mobile
   -------------------------------------------------------------------------- */
.whatsapp-btn__tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 12px);
  right: 0;
  background: var(--color-neutral-900);
  color: var(--color-white);
  font-size: 13px;
  font-family: var(--font-body);
  line-height: var(--leading-sm);
  white-space: nowrap;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  pointer-events: none;
}

/* Arrow */
.whatsapp-btn__tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  right: 18px;
  border: 6px solid transparent;
  border-top-color: var(--color-neutral-900);
}

/* Show tooltip on hover (desktop) */
.whatsapp-btn--unavailable:hover .whatsapp-btn__tooltip {
  display: block;
}

/* Show tooltip when .is-active (JS sets this on mobile tap, clears after 3s) */
.whatsapp-btn--unavailable.is-active .whatsapp-btn__tooltip {
  display: block;
}