/* ===== BACK TO TOP ===== */
.back-on-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:50px;
  height:50px;
  border-radius:50%;
  background:rgba(15,15,30,.85);
  backdrop-filter:blur(14px);
  border:1px solid rgba(139,92,246,.35);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  cursor:pointer;
  z-index:9998;
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  opacity:0;
  visibility:hidden;
  transform:translateY(15px);
  transition:opacity .3s ease, transform .3s ease, visibility .3s ease, border-color .3s, box-shadow .3s;
}

.back-on-top.show{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

.back-on-top:hover{
  border-color:rgba(139,92,246,.7);
  box-shadow:0 0 30px rgba(139,92,246,.5);
  transform:translateY(-4px);
}

.back-on-top:active{
  transform:translateY(-1px) scale(.95);
}

@media(max-width:768px){
  .back-on-top{
    right:16px;
    bottom:16px;
    width:44px;
    height:44px;
    font-size:19px;
  }
}