.go-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  padding: 0;
  background-color: var(--bs-body-bg);
  border: 2px solid var(--bs-primary);
  color: var(--bs-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);

  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.go-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
}

.go-top-btn:hover {
  background-color: var(--bs-primary);
  color: var(--bs-body-bg);
}