.whatsapp-float{position:fixed;bottom:24px;right:24px;width:56px;height:56px;background:var(--whatsapp-green);color:#fff;border-radius:16px;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);transition:all .2s ease;z-index:1000}.whatsapp-float:hover{background:var(--whatsapp-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(37,211,102,.3)}.whatsapp-float:active{transform:translateY(0)}.whatsapp-float-icon{width:28px;height:28px}@media (max-width:640px){.whatsapp-float{bottom:20px;right:20px;width:52px;height:52px}.whatsapp-float-icon{width:26px;height:26px}}