/*--------------------------------------------------------------
# Back to Top Button - Premium Style
--------------------------------------------------------------*/

.back-to-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 20px;
  bottom: 20px;
  z-index: 996;
  background: linear-gradient(135deg, #47b2e4, #73c5eb);
  width: 50px;
  height: 50px;
  border-radius: 14px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 25px rgba(71, 178, 228, 0.35);
}

.back-to-top i {
  font-size: 26px;
  color: #fff;
  line-height: 0;
}

.back-to-top:hover {
  background: linear-gradient(135deg, #37a2d4, #63b5db);
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(71, 178, 228, 0.45);
}

.back-to-top:focus {
  outline: none;
}

.back-to-top.active {
  visibility: visible;
  opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .back-to-top {
    right: 15px;
    bottom: 15px;
    width: 45px;
    height: 45px;
    border-radius: 12px;
  }

  .back-to-top i {
    font-size: 24px;
  }
}