.whatsapp-button{position:fixed;bottom:30px;right:30px;background:#25D366;width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:white;font-size:30px;text-decoration:none;box-shadow:0 4px 20px rgba(37,211,102,.3);transition:all .3s ease;z-index:9999}.whatsapp-button:before{content:"";position:absolute;width:100%;height:100%;background:#25D366;border-radius:50%;opacity:.7;animation:pulse 2s ease-out infinite}.whatsapp-button:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(37,211,102,.4)}.whatsapp-button__tooltip{position:absolute;right:80px;background:rgba(0,0,0,.8);color:white;padding:8px 15px;border-radius:4px;font-size:14px;white-space:nowrap;opacity:0;visibility:hidden;transition:all .3s ease}.whatsapp-button__tooltip:after{content:"";position:absolute;right:-8px;top:50%;transform:translateY(-50%);border:4px solid transparent;border-left-color:rgba(0,0,0,.8)}.whatsapp-button:hover .whatsapp-button__tooltip{opacity:1;visibility:visible;right:75px}@keyframes pulse{0%{transform:scale(1);opacity:.7}70%{transform:scale(1.3);opacity:0}to{transform:scale(1.3);opacity:0}}@media (max-width:768px){.whatsapp-button{bottom:20px;right:20px;width:50px;height:50px;font-size:25px}}