#back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: none;
}

#back-to-top button {
  padding: 8px;
  border: none;
  border-radius: 8px;
  background-color: var(--button-float-bg);
  box-shadow: 0 3px 5px var(--button-float-shadow);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.3s ease;
}

#back-to-top button:hover {
  background-color: var(--button-float-bg-hover);
  box-shadow: 0 5px 8px var(--button-float-shadow-hover);
  transform: translateY(-2px);
}

#back-to-top button svg {
  width: 16px;
  height: 16px;
  // fill: var(--button-float-arrow);
  stroke: var(--button-float-arrow);
  transition: stroke 0.3s ease;
}

#back-to-top button:hover svg {
  // fill: var(--button-float-arrow);
  stroke: var(--button-float-arrow);
}