/* ==========================================================================
   WhatsApp Widget
   Fixed floating action button, visible site-wide. UI only in Phase 1 —
   the href is a placeholder until the client confirms their WhatsApp
   Business number for Phase 2.
   ========================================================================== */

.whatsapp-widget {
  position: fixed;
  right: clamp(1.25rem, 3vw, 2rem);
  bottom: clamp(1.25rem, 3vw, 2rem);
  z-index: var(--z-overlay);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.whatsapp-widget__tooltip {
  background: var(--color-ink-teal);
  color: var(--color-white);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard);
  pointer-events: none;
}

.whatsapp-widget:hover .whatsapp-widget__tooltip {
  opacity: 1;
  transform: translateX(0);
}

.whatsapp-widget__button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(37, 211, 102, 0.9);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-lg);
  color: var(--color-white);
  transition: transform var(--dur-fast) var(--ease-standard),
    background var(--dur-fast) var(--ease-standard);
}

.whatsapp-widget__button:hover {
  transform: translateY(-3px) scale(1.04);
  background: #25d366;
}

.whatsapp-widget__button svg {
  width: 28px;
  height: 28px;
  position: relative;
  z-index: 2;
}

.whatsapp-widget__pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(37, 211, 102, 0.6);
  animation: whatsapp-pulse 3.5s ease-out infinite;
}

@keyframes whatsapp-pulse {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }

  70% {
    transform: scale(1.7);
    opacity: 0;
  }

  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-widget__pulse {
    animation: none;
    display: none;
  }
}

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

  .whatsapp-widget__button {
    width: 52px;
    height: 52px;
  }

  .whatsapp-widget__button svg {
    width: 24px;
    height: 24px;
  }
}