.whatsapp-float{position:fixed;bottom:20px;right:20px;z-index:1000;display:flex;align-items:center;gap:15px}.serena-label{display:flex;flex-direction:column;background:linear-gradient(135deg,#7c3aed,#6d28d9);padding:12px 20px;border-radius:15px;box-shadow:0 4px 20px rgba(124,58,237,.4);opacity:0;transform:translateX(20px);transition:all .4s ease;pointer-events:none;white-space:nowrap}.whatsapp-float:hover .serena-label{opacity:1;transform:translateX(0)}.serena-label-text{font-size:11px;color:rgba(255,255,255,.8);font-weight:500;letter-spacing:.5px;text-transform:uppercase}.serena-label-name{font-size:18px;color:white;font-weight:700;line-height:1.2;margin:2px 0}.serena-label-subtitle{font-size:11px;color:rgba(255,255,255,.7);font-weight:400}.serena-robot-btn{display:flex;align-items:center;justify-content:center;width:75px;height:75px;background:transparent;border-radius:50%;box-shadow:0 4px 25px rgba(139,92,246,.3);text-decoration:none;color:white;transition:all .3s ease;animation:serena-pulse 2.5s infinite;position:relative}.serena-robot-btn:before{content:"";position:absolute;inset:-5px;background:radial-gradient(circle,rgba(139,92,246,.15),transparent);border-radius:50%;z-index:-1;opacity:0;transition:opacity .3s ease}.serena-robot-btn:hover:before{opacity:1}.serena-robot-btn:hover{transform:scale(1.15) rotate(5deg);box-shadow:0 6px 35px rgba(139,92,246,.5);color:white;text-decoration:none}.serena-robot-btn:active{transform:scale(.95) rotate(0deg)}.serena-robot-icon{filter:drop-shadow(0 2px 4px rgba(0,0,0,.2));transition:transform .3s ease}.serena-robot-btn:hover .serena-robot-icon{transform:scale(1.05);animation:robot-wave .6s ease}@keyframes serena-pulse{0%{box-shadow:0 4px 25px rgba(139,92,246,.3)}50%{box-shadow:0 4px 25px rgba(139,92,246,.3),0 0 0 15px rgba(139,92,246,.1),0 0 0 30px rgba(139,92,246,.05)}to{box-shadow:0 4px 25px rgba(139,92,246,.3)}}@keyframes robot-wave{0%,to{transform:rotate(0deg)}25%{transform:rotate(-10deg)}75%{transform:rotate(10deg)}}@media (max-width:768px){.whatsapp-float{bottom:15px;right:15px;gap:10px}.serena-robot-btn{width:60px;height:60px}.serena-robot-icon{width:38px;height:38px}.serena-label{padding:10px 15px;border-radius:12px}.serena-label-text{font-size:9px}.serena-label-name{font-size:15px}.serena-label-subtitle{font-size:9px}}@media (max-width:480px){.serena-label{display:none}.serena-robot-btn{width:55px;height:55px}.serena-robot-icon{width:35px;height:35px}}