/* ============================================================
   BlockFloatToc 公開側スタイル（常時読込・自己完結・テーマ非依存）
   フローティング目次（追従ホバー目次）。画面端に position:fixed で留まり、
   タブのホバー/タップでパネルが展開する。編集モード(.bkftoc-editing)では
   position:fixed を外しインラインのプレビューとして表示する。
   ============================================================ */
.bkftoc-root{
  --bkftoc-accent: var(--tm-brand, #2f6f8f);
  --bkftoc-accent-soft: rgba(47,111,143,.12);
  --bkftoc-ink: #26333d;
  --bkftoc-sub: #64707a;
  --bkftoc-bg: #ffffff;
  --bkftoc-border: #e2e6ea;
  position: fixed;
  top: 50%;
  z-index: 900; /* 高すぎない値。ヘッダー/ドロワー(1000超)やチャットウィジェット等より下 */
  display: flex;
  align-items: center;
  transform: translateY(-50%);
  max-width: 100%;
  box-sizing: border-box;
  font-family: inherit;
  line-height: 1.5;
}
.bkftoc-root *{ box-sizing: border-box; }
.bkftoc-root.bkftoc-pos-right{ right: 0; flex-direction: row-reverse; }
.bkftoc-root.bkftoc-pos-left{ left: 0; flex-direction: row; }

/* --- タブ（普段の見た目） --- */
.bkftoc-tab{
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 0;
  background: var(--bkftoc-accent);
  color: #fff;
  padding: 11px 13px;
  font-size: 12.5px;
  font-weight: 800;
  font-family: inherit;
  letter-spacing: .02em;
  cursor: pointer;
  min-height: 44px;
  box-shadow: 0 4px 16px rgba(20,30,40,.22);
  transition: filter .15s ease;
  white-space: nowrap;
}
.bkftoc-pos-right .bkftoc-tab{ border-radius: 12px 0 0 12px; }
.bkftoc-pos-left .bkftoc-tab{ border-radius: 0 12px 12px 0; }
.bkftoc-tab:hover{ filter: brightness(1.06); }
.bkftoc-tab:focus-visible{ outline: 2px solid #fff; outline-offset: -4px; }
.bkftoc-tab-icon{ display: inline-flex; line-height: 0; }
.bkftoc-tab-text{ max-width: 120px; overflow: hidden; text-overflow: ellipsis; }
.bkftoc-tab-dot{
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,.55);
  transition: background .2s ease, transform .2s ease;
  flex: none;
}
.bkftoc-root.bkftoc-has-active .bkftoc-tab-dot{ background: #fff; transform: scale(1.3); }
.bkftoc-root.is-open .bkftoc-tab{ filter: brightness(.96); }

/* --- パネル（展開時） --- */
.bkftoc-panel{
  position: absolute;
  top: 50%;
  transform: translateY(-50%) scale(.98);
  width: 240px;
  max-width: 78vw;
  max-height: 68vh;
  background: var(--bkftoc-bg);
  border: 1px solid var(--bkftoc-border);
  border-radius: 14px;
  box-shadow: 0 16px 44px rgba(20,30,40,.2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
}
.bkftoc-pos-right .bkftoc-panel{ right: calc(100% + 10px); }
.bkftoc-pos-left .bkftoc-panel{ left: calc(100% + 10px); }
.bkftoc-root.bkftoc-trig-hover:hover .bkftoc-panel,
.bkftoc-root.bkftoc-trig-hover:focus-within .bkftoc-panel,
.bkftoc-root.is-open .bkftoc-panel{
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}
.bkftoc-root.bkftoc-trig-hover:hover .bkftoc-tab,
.bkftoc-root.bkftoc-trig-hover:focus-within .bkftoc-tab{ filter: brightness(.96); }

.bkftoc-panel-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 8px 11px 14px;
  background: var(--bkftoc-accent);
  color: #fff;
  flex: none;
}
.bkftoc-panel-title{
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: .02em;
  overflow-wrap: break-word;
  word-break: break-word;
  min-width: 0;
}
.bkftoc-close{
  flex: none;
  min-width: 32px;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #fff;
  cursor: pointer;
  opacity: .85;
  transition: background .15s, opacity .15s;
}
.bkftoc-close:hover{ background: rgba(255,255,255,.2); opacity: 1; }
.bkftoc-close:focus-visible{ outline: 2px solid #fff; outline-offset: 1px; }

.bkftoc-nav{
  overflow-y: auto;
  padding: 8px 8px 10px;
  flex: 1 1 auto;
  -webkit-overflow-scrolling: touch;
}
.bkftoc-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.bkftoc-list li{ margin: 0; padding: 0; }
.bkftoc-link{
  display: block;
  padding: 8px 10px;
  border-left: 3px solid transparent;
  border-radius: 0 8px 8px 0;
  color: var(--bkftoc-ink);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
  overflow-wrap: break-word;
  word-break: break-word;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.bkftoc-link:hover{ background: rgba(20,30,40,.05); }
.bkftoc-link:focus-visible{ outline: 2px solid var(--bkftoc-accent); outline-offset: -2px; border-radius: 6px; }
.bkftoc-list li[data-bkftoc-level="3"] .bkftoc-link{ padding-left: 22px; font-size: 12.5px; font-weight: 600; color: var(--bkftoc-sub); }
.bkftoc-list li[data-bkftoc-level="4"] .bkftoc-link{ padding-left: 34px; font-size: 12px; font-weight: 500; color: var(--bkftoc-sub); }
.bkftoc-link.is-active{
  color: var(--bkftoc-accent);
  border-left-color: var(--bkftoc-accent);
  background: var(--bkftoc-accent-soft);
  font-weight: 800;
}
.bkftoc-list li[data-bkftoc-level="3"] .bkftoc-link.is-active,
.bkftoc-list li[data-bkftoc-level="4"] .bkftoc-link.is-active{ color: var(--bkftoc-accent); }

.bkftoc-empty-msg{
  margin: 6px 4px;
  padding: 14px 10px;
  text-align: center;
  color: var(--bkftoc-sub);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.7;
}

/* 見出しが0件のページでは常設タブごと非表示にする（編集プレビュー中は除く） */
.bkftoc-root.bkftoc-no-headings:not(.bkftoc-editing){ display: none !important; }

/* --- 編集モード: 固定表示を外し、その場にインラインでプレビュー表示 --- */
.bkftoc-root.bkftoc-editing{
  position: relative !important;
  top: auto !important;
  left: auto !important;
  right: auto !important;
  transform: none !important;
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 4px auto;
  z-index: 1;
}
.bkftoc-root.bkftoc-editing .bkftoc-tab{ display: none; }
.bkftoc-root.bkftoc-editing .bkftoc-panel{
  position: static;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
  width: 100%;
  max-width: none;
  max-height: 340px;
  box-shadow: 0 4px 18px rgba(20,30,40,.14);
}
.bkftoc-editnote{
  margin-top: 8px;
  text-align: center;
  color: #8a5000;
  font-size: 11.5px;
  font-weight: 700;
  line-height: 1.7;
}

@media (max-width: 768px){
  .bkftoc-root.bkftoc-hide-mobile:not(.bkftoc-editing){ display: none !important; }
}
@media (max-width: 480px){
  .bkftoc-root:not(.bkftoc-editing) .bkftoc-panel{ width: min(76vw, 260px); }
  .bkftoc-root:not(.bkftoc-editing) .bkftoc-tab{ padding: 10px 11px; font-size: 12px; }
  .bkftoc-root:not(.bkftoc-editing) .bkftoc-tab-text{ max-width: 84px; }
}
@media (prefers-reduced-motion: reduce){
  .bkftoc-panel{ transition: none; }
  .bkftoc-tab{ transition: none; }
}