.back-to-top{position:fixed;bottom:30px;right:30px;width:45px;height:45px;background:#08080ad9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:none;border-radius:50%;color:var(--primary, #0083c9);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:scale(.8);transition:all .3s cubic-bezier(.4,0,.2,1);z-index:999;box-shadow:0 4px 15px #0000004d}.back-to-top.show{opacity:1;visibility:visible;transform:scale(1)}.back-to-top:hover{background:#08080af2;box-shadow:0 6px 25px #0083c966;transform:scale(1.05)}.back-to-top:active{transform:scale(.95)}.progress-ring{position:absolute;top:0;left:0;width:100%;height:100%;transform:rotate(-90deg)}.progress-ring-circle{transition:stroke-dashoffset .1s linear;stroke-linecap:round}.arrow-icon{position:relative;z-index:1;color:#fff}.back-to-top:hover .arrow-icon{animation:arrowBounce .6s ease-in-out infinite}@keyframes arrowBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}@media(max-width:768px){.back-to-top{bottom:20px;right:20px;width:40px;height:40px}.arrow-icon{width:14px;height:14px}}