/*!
 * saecanet-header.css
 *  - Back to top ボタン(Bootstrap の .btn .btn-primary .rounded-circle と併用)
 */

/* ------------------------------------------------------------
 * Back to top
 * ---------------------------------------------------------- */
#saecanet-back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  z-index: 1030;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  padding: 0;
  line-height: 1;

  /* 初期状態は非表示 */
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease,
    visibility 0.3s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease;
}

#saecanet-back-to-top.is-visible {
  opacity: 0.92;
  visibility: visible;
  transform: translateY(0);
}

#saecanet-back-to-top.is-visible:hover,
#saecanet-back-to-top.is-visible:focus-visible {
  opacity: 1;
  transform: translateY(-3px);
  box-shadow: 0 0.6rem 1.2rem rgba(15, 42, 67, 0.35) !important;
}

#saecanet-back-to-top svg {
  display: block;
  pointer-events: none;
}

@media (max-width: 575.98px) {
  #saecanet-back-to-top {
    right: 0.9rem;
    bottom: calc(0.9rem + env(safe-area-inset-bottom, 0px));
    width: 2.6rem;
    height: 2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  #saecanet-back-to-top {
    transition: opacity 0.01s linear, visibility 0.01s linear;
    transform: none;
  }
  #saecanet-back-to-top.is-visible:hover,
  #saecanet-back-to-top.is-visible:focus-visible {
    transform: none;
  }
}

@media print {
  #saecanet-back-to-top {
    display: none !important;
  }
}