/* ===================================
   WHATSAPP FLOATING ACTION BUTTON
   =================================== */

.whatsapp-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: var(--z-modal);

  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: var(--radius-full);
  background-color: #25d366;
  color: #ffffff;
  text-decoration: none;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45), 0 2px 8px rgba(0, 0, 0, 0.15);

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

  /* For tooltip positioning */
  isolation: isolate;
}

.whatsapp-fab:hover {
  background-color: #20ba59;
  transform: translateY(-3px) scale(1.06);
  box-shadow: 0 10px 32px rgba(37, 211, 102, 0.55), 0 4px 12px rgba(0, 0, 0, 0.18);
}

.whatsapp-fab:active {
  transform: translateY(-1px) scale(1.02);
}

/* ---- Icon ---- */
.whatsapp-fab__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

/* ---- Pulse ring animation ---- */
.whatsapp-fab__pulse {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-full);
  background-color: #25d366;
  opacity: 0;
  animation: whatsapp-pulse 2.4s ease-out infinite;
  pointer-events: none;
}

@keyframes whatsapp-pulse {
  0% {
    opacity: 0.5;
    transform: scale(1);
  }
  70% {
    opacity: 0;
    transform: scale(1.55);
  }
  100% {
    opacity: 0;
    transform: scale(1.55);
  }
}

/* ---- Tooltip ---- */
.whatsapp-fab__tooltip {
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%);

  background-color: #1a2535;
  color: #ffffff;
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  pointer-events: none;

  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
  transform: translateY(-50%) translateX(6px);
}

/* Tooltip arrow */
.whatsapp-fab__tooltip::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 100%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #1a2535;
}

.whatsapp-fab:hover .whatsapp-fab__tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Adapt tooltip for dark theme */
[data-theme="dark"] .whatsapp-fab__tooltip {
  background-color: #e8edf5;
  color: #0d1117;
}

[data-theme="dark"] .whatsapp-fab__tooltip::after {
  border-left-color: #e8edf5;
}

/* Hide tooltip on very small screens */
@media (max-width: 480px) {
  .whatsapp-fab {
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
  }

  .whatsapp-fab__tooltip {
    display: none;
  }
}