.global-scroll-top-btn {
  position: fixed;
  right: 16px;
  bottom: 74px;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #3b82f6;
  color: #ffffff;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  z-index: 180;
  display: grid;
  place-items: center;
}

.global-scroll-top-btn:hover {
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.3);
}

.global-scroll-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.global-scroll-top-btn:focus-visible {
  outline: 2px solid #1e40af;
  outline-offset: 2px;
}