/* ===== タグセクション（共通） ===== */
/* knowledge-tags.ts / media-tags.ts の共通コンポーネント tag-section-ui.ts が使うスタイル */

.tag-section-container {
  padding: 4px 0 8px;
}

.tag-sections-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px 4px;
}

.tag-sections-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag-add-section-btn {
  font-size: 0.72rem;
  color: var(--color-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  transition:
    color 0.15s,
    background 0.15s;
}

.tag-add-section-btn:hover {
  color: var(--color-text);
  background: var(--color-hover);
}

/* セクション全体 */

.tag-section {
  margin-bottom: 2px;
}

.tag-section + .tag-section {
  margin-top: 4px;
}

/* セクションタイトル行 */

.tag-section-title {
  display: flex;
  align-items: center;
  gap: 2px;
  padding-right: 4px;
  background: var(--color-surface);
  border-radius: 4px;
}

.tag-section-toggle {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px 4px 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-muted);
  font-size: 0.8rem;
  font-weight: 500;
  text-align: left;
  border-radius: 4px;
  transition:
    color 0.15s,
    background 0.15s;
  min-width: 0;
}

.tag-section-toggle:hover {
  color: var(--color-text);
  background: var(--color-hover);
}

.tag-section-chevron {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  transition: transform 0.2s;
}

.tag-section.is-collapsed .tag-section-chevron {
  transform: rotate(-90deg);
}

.tag-section-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* セクション見出しの 編集 / 削除 ボタン (hover で表示) */
.tag-section-actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s;
}

.tag-section-title:hover .tag-section-actions {
  opacity: 1;
}

.tag-section-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  color: var(--color-muted);
  transition: background 0.15s;
}

.tag-section-action-btn:hover {
  background: var(--color-hover);
  color: var(--color-text);
}

.tag-section-action-btn--danger:hover {
  color: var(--color-danger);
}

/* セクション並び替えD&D */

.tag-section-title[draggable='true'] {
  cursor: grab;
}

.tag-section-title[draggable='true']:active {
  cursor: grabbing;
}

.tag-section-title.section-dragging {
  opacity: 0.4;
}

.tag-section-title.section-drag-over {
  outline: 1px dashed var(--color-accent-text);
  border-radius: 4px;
}

/* セクション内タグリスト */

.tag-section-tags {
  list-style: none;
  margin: 0;
  padding: 2px 0 0;
  min-height: 4px;
  border-radius: 4px;
  transition: background 0.15s;
}

.tag-section.is-collapsed .tag-section-tags {
  display: none;
}

/* セクション内タグアイテム */

.tag-section-tag-item {
  cursor: grab;
  display: flex;
  align-items: center;
  position: relative;
}

.tag-section-tag-item .sidebar__menu-link {
  flex: 1;
  width: auto;
  padding-right: 32px;
}

.tag-section-tag-item.is-dragging {
  opacity: 0.4;
}

/* D&D挿入インジケーター */

.tag-section-tag-item[data-drag-insert-pos='before']::before {
  content: '';
  position: absolute;
  top: 0;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.tag-section-tag-item[data-drag-insert-pos='after']::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.tag-section-tag-item .tag-context-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--animation-duration) ease;
}

@media (hover: hover) and (pointer: fine) {
  .tag-section-tag-item:hover .tag-context-btn {
    opacity: 1;
  }

  .tag-section-tag-item:hover .sidebar__menu-link {
    background: var(--color-target);
  }

  .tag-section-tag-item .tag-context-btn:hover {
    background: var(--color-target);
    color: var(--color-accent-strong);
  }
}

/* セクション追加フォーム */

.tag-add-section-form {
  padding: 6px 10px;
  border-top: 1px solid var(--color-border);
  margin-top: 4px;
}

.tag-add-section-input {
  width: 100%;
  padding: 5px 8px;
  background: var(--color-input-bg, var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text);
  font-size: 0.82rem;
  box-sizing: border-box;
  outline: none;
  transition: border-color 0.15s;
}

.tag-add-section-input:focus {
  border-color: var(--color-primary);
}

.tag-add-section-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  margin-top: 6px;
}

.tag-add-section-cancel,
.tag-add-section-save {
  padding: 3px 10px;
  font-size: 0.78rem;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.tag-add-section-cancel {
  background: var(--color-hover);
  color: var(--color-muted);
}

.tag-add-section-cancel:hover {
  background: var(--color-border);
}

.tag-add-section-save {
  background: var(--color-primary);
  color: #fff;
}

.tag-add-section-save:hover {
  opacity: 0.85;
}

/* コンテキストメニュー */

.tag-context-menu {
  position: fixed;
  z-index: 9000;
  min-width: 160px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  padding: 4px 0;
  overflow: hidden;
}

.tag-context-menu-group {
  padding-bottom: 4px;
}

.tag-context-menu-label {
  padding: 4px 12px 2px;
  font-size: 0.72rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tag-context-menu-divider {
  height: 1px;
  background: var(--color-border);
  margin: 4px 0;
}

.tag-context-menu-item {
  display: block;
  width: 100%;
  padding: 7px 14px;
  background: none;
  border: none;
  text-align: left;
  font-size: 0.83rem;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.12s;
}

.tag-context-menu-item:hover {
  background: var(--color-hover);
}

.tag-context-menu-item--danger {
  color: var(--color-error, #e53935);
}

.tag-context-menu-item--danger:hover {
  background: rgba(229, 57, 53, 0.08);
}

/* タグ色設定ポップオーバー */

.tag-color-picker-popover {
  position: fixed;
  z-index: 9001;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tag-color-picker-swatches {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag-color-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    transform 0.12s,
    border-color 0.12s;
  flex-shrink: 0;
}

.tag-color-swatch:hover {
  transform: scale(1.15);
}

.tag-color-swatch.is-selected {
  border-color: var(--color-text);
}

.tag-color-clear {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-muted);
  font-size: 0.78rem;
  padding: 4px 8px;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s;
}

.tag-color-clear:hover {
  background: var(--color-hover);
  color: var(--color-text);
}

/* タグ検索ボックス (タグが多い時だけ表示) */
.tag-search-box {
  padding: 4px 8px 6px;
}

.tag-search-input {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.8125rem;
  outline: none;
}

.tag-search-input:focus {
  border-color: var(--color-accent, #a4b2dd);
}

/* 検索中は折りたたみを一時展開する (保存状態は変えない) */
.tag-section-container.is-searching .tag-section.is-collapsed .tag-section-tags {
  display: block;
}