:root {
  --pulse-speed: 2.8s;       /* 🔧 change pulse speed */
  --glow-opacity: 0.45;      /* 🔧 glow strength */
}

.whatsapp-float {
  position: fixed;
  bottom: 22px;
  left: 16px;
  width: 54px;
  height: 54px;
  border-radius: 50%;

  display: flex;
  align-items: center;
  justify-content: center;

  /* Glass effect */
  background: rgba(37, 211, 102, 0.28);
  backdrop-filter: blur(12px);

  z-index: 9999;

  /* Hidden state */
  opacity: 0;
  transform: translateX(80px);
  pointer-events: none;

  transition: transform 0.45s ease, opacity 0.45s ease;
}

/* Show state */
.whatsapp-float.show {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;

  animation:
    pulseGlow var(--pulse-speed) infinite ease-in-out,
    floatSoft 3.5s infinite ease-in-out;
}

.whatsapp-float img {
  width: 28px;
  height: 28px;
}

/* Tooltip */
.wa-tooltip {
  position: absolute;
  right: 62px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 6px 10px;
  font-size: 13px;
  border-radius: 6px;
  white-space: nowrap;

  opacity: 0;
  transform: translateX(10px);
  transition: all 0.25s ease;
  pointer-events: none;
}

.whatsapp-float:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* Floating motion */
@keyframes floatSoft {
  0% { transform: translateX(0) translateY(0); }
  50% { transform: translateX(0) translateY(-6px); }
  100% { transform: translateX(0) translateY(0); }
}

/* Pulse + glow */
@keyframes pulseGlow {
  0% {
    box-shadow:
      0 10px 30px rgba(0,0,0,0.25),
      0 0 0 0 rgba(37, 211, 102, var(--glow-opacity));
  }
  70% {
    box-shadow:
      0 10px 30px rgba(0,0,0,0.25),
      0 0 0 14px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow:
      0 10px 30px rgba(0,0,0,0.25),
      0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* Mobile size */
@media (max-width: 600px) {
  .whatsapp-float {
    width: 48px;
    height: 48px;
  }

  .wa-tooltip {
    font-size: 12px;
  }
}