.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: var(--z-whatsapp);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--navy2);
  border: 1px solid var(--bd);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  text-decoration: none;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow:
    0 8px 28px rgba(0, 229, 255, 0.35),
    0 4px 24px rgba(0, 0, 0, 0.4);
}

.whatsapp-float:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.whatsapp-float-icon {
  width: 26px;
  height: 26px;
  fill: var(--accent);
  position: relative;
  z-index: 1;
  transition: fill var(--transition-fast);
}

.whatsapp-float:hover .whatsapp-float-icon,
.whatsapp-float:focus-visible .whatsapp-float-icon {
  fill: #020810;
}

.whatsapp-float-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0;
  animation: whatsapp-pulse 2.6s ease-out infinite;
  pointer-events: none;
}

@keyframes whatsapp-pulse {
  0% {
    transform: scale(1);
    opacity: 0.45;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

.whatsapp-float-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(4px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--w);
  background: var(--navy2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-btn);
  padding: 8px 14px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast);
}

.whatsapp-float:hover .whatsapp-float-tooltip,
.whatsapp-float:focus-visible .whatsapp-float-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

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

@media (max-width: 768px) {
  .whatsapp-float {
    right: 16px;
    bottom: 16px;
    width: 52px;
    height: 52px;
  }

  .whatsapp-float-tooltip {
    display: none;
  }
}