/* =============================================================
   BBI - Back to top (site-wide)
   assets/css/back-to-top.css
   ============================================================= */

.bbi-back-to-top {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  right: var(--site-chrome-inline);
  bottom: 24px;
  z-index: var(--z-sticky);
  width: 42px;
  height: 50px;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity var(--transition-fast),
    visibility var(--transition-fast),
    transform var(--transition-fast);
}

.bbi-back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.bbi-back-to-top:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 4px;
}

.bbi-back-to-top__icon {
  display: flex;
  line-height: 0;
}

.bbi-back-to-top__icon svg {
  display: block;
  width: 42px;
  height: 50px;
}