/* ==================================
  PAGE TOP（PC・背景/枠なし）
================================== */

.wp-custom-pagetop {
  --width: 64px;
  --height: 160px;
  --color-main: #980000;

  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 9999;

  /* 初期非表示 */
  opacity: 0;
  pointer-events: none;

  transition: opacity .25s ease;
}

/* 表示 */
.wp-custom-pagetop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ===============================
  ボタン本体
================================ */
.wp-custom-pagetop__btn {
  width: var(--width);
  height: var(--height);

  background: transparent !important;
  border: none !important;
  box-shadow: none !important;

  cursor: pointer;
  padding: 8px 4px;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;

  color: var(--color-main) !important;
}

/* フォーカス */
.wp-custom-pagetop__btn:focus-visible {
  outline: 2px solid rgba(152,0,0,.4);
  outline-offset: 3px;
}

/* ===============================
  飛行機
================================ */
.wp-custom-pagetop__icon {
  width: 24px;
  height: auto;
  margin-bottom: 18px;

  /* hover専用 */
  transition: transform .25s ease;
}

/* hover時：飛行機だけ上へ */
.wp-custom-pagetop__btn:hover .wp-custom-pagetop__icon,
.wp-custom-pagetop__btn:focus-visible .wp-custom-pagetop__icon {
  transform: translateY(-8px);
}

/* ===============================
  縦書き PAGE TOP
================================ */
.wp-custom-pagetop__text {
  writing-mode: vertical-rl;
  text-orientation: mixed;

  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-main) !important;
}