.dommine-back-to-top {
  position: fixed;
  right: 10px;
  bottom: 25px;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  cursor: pointer;
  visibility: hidden;
  background: #fff;
  border: 0;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgb(0 0 0 / 15%);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s, box-shadow 0.2s ease;
}

.dommine-back-to-top.is-visible {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.dommine-back-to-top.is-visible:hover {
  box-shadow: 0 4px 14px rgb(0 0 0 / 18%);
  transform: translateY(-2px);
}

.dommine-back-to-top__arrow {
  width: 10px;
  height: 10px;
  border-top: 2px solid #333;
  border-left: 2px solid #333;
  transform: rotate(45deg) translate(2px, 2px);
}

@media (prefers-reduced-motion: reduce) {
  .dommine-back-to-top {
    transition: none;
  }
}