@keyframes whatsapp-breath{0%{transform:scale(1);box-shadow:0 0 rgba(37,211,102,.8)}70%{transform:scale(1.15);box-shadow:0 0 0 20px rgba(37,211,102,0)}to{transform:scale(1);box-shadow:0 0 rgba(37,211,102,0)}}.whatsapp-float{position:fixed;right:max(.5rem,2vw);bottom:max(.5rem,2vh);z-index:999;font-size:clamp(2rem,4vw,2.5rem);line-height:1;cursor:pointer}.whatsapp-float__icon{padding:.5rem .5rem .2rem;background-color:#25d366;color:#fff;border:2px solid #fff;border-radius:50%;display:inline-block;transition:all .3s ease;box-shadow:0 2px 8px rgba(0,0,0,.15)}.whatsapp-float__icon--breathing{animation:whatsapp-breath 2s infinite cubic-bezier(.4,0,.2,1)}.whatsapp-float__icon:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(37,211,102,.35)}.chat-window{position:fixed;right:.5rem;bottom:4.5rem;z-index:1;width:260px;height:380px;max-width:calc(100vw - 1rem);max-height:calc(100vh - 8rem);border-radius:.75rem;background-color:#fff;box-shadow:0 4px 20px rgba(0,0,0,.15);overflow:hidden;transition:all .3s ease-in-out;transform:scale(0);transform-origin:bottom right}.chat-window--visible{transform:scale(1)}.chat-window__header{display:flex;justify-content:space-between;background-color:#25d366;color:#fff;padding:.75rem 1rem}.chat-window__title{font-weight:600;line-height:2}.chat-window__close{line-height:2;cursor:pointer}.chat-window__body{height:calc(100% - 56px);overflow-y:auto;padding:.5rem 0}.chat-item__link{display:flex;color:#333;padding:.75rem 1rem;border-bottom:#f1f1f1 1px solid;transition:background-color .2s ease}.chat-item__link:hover{background-color:#f8f9fa}.chat-item__icon{margin-right:.5rem;font-size:2rem;color:#25d366;background-color:#fff;border-radius:50%}.chat-item__content{display:flex;flex-direction:column}.chat-item__name{font-weight:600}.chat-item__number{font-size:.85rem;color:#666}