/* ==========================================================================
   Composants — bouton flottant WhatsApp
   ========================================================================== */

.whatsapp-float {
  position: fixed;
  bottom: var(--space-5);
  left: var(--space-5);
  z-index: var(--z-float);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-whatsapp);
  color: #0b2b18;
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
  /* Contrainte projet : compositing des éléments fixes */
  transform: translateZ(0);
  will-change: transform;
  transition: transform var(--duration-base) var(--ease-out-expo),
    box-shadow var(--duration-base) var(--ease-out-expo);
}

.whatsapp-float:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 16px 40px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.whatsapp-float::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid rgba(37, 211, 102, 0.6);
  animation: wa-pulse 2.4s var(--ease-out-expo) infinite;
  pointer-events: none;
}

@keyframes wa-pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  70%,
  100% {
    transform: scale(1.25);
    opacity: 0;
  }
}

@media (max-width: 640px) {
  .whatsapp-float span {
    display: none;
  }

  .whatsapp-float {
    padding: var(--space-3);
  }
}