/* メディア添付機能 */
.attach-media-button {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all var(--animation-duration) ease;
}

.attach-media-button:hover {
  background: var(--color-hover);
  color: var(--color-primary);
}

/* 添付メニューコンテナ (flex 子: 左端配置 + popup の絶対配置基準のため relative、 縦位置は wrapper の align-items: center) */
.attach-menu-container {
  position: relative;
  order: -1;
  flex-shrink: 0;
}

/* 添付メニューポップアップ */
.attach-menu-popup {
  position: absolute;
  bottom: calc(100% + 16px);
  left: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  z-index: 100;
  min-width: 140px;
  overflow: hidden;
}

.attach-menu-popup.hidden {
  display: none;
}

.attach-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  font-size: 0.9rem;
  transition: background 0.15s ease;
  text-align: left;
}

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

.attach-menu-item:first-child {
  border-bottom: 1px solid var(--color-border);
}

.attach-menu-item svg {
  flex-shrink: 0;
  color: var(--color-muted);
}

.attach-menu-item:hover svg {
  color: var(--color-accent-text);
}

.media-preview-container {
  display: flex;
  gap: 8px;
  padding: 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
  max-height: 200px;
  overflow-y: auto;
}

.media-preview-container.hidden {
  display: none;
}

.media-preview-item {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: 4px;
  overflow: hidden;
  border: 2px solid var(--color-border);
}

.media-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-preview-item .file-preview {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-alt);
  padding: 8px;
  gap: 4px;
}

.media-preview-item .file-icon {
  font-size: 1.5rem;
}

.media-preview-item .file-name {
  font-size: 0.5625rem;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
  color: var(--color-text);
}

.media-preview-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(0, 0, 0, 0.7);
  color: var(--color-button-text);
  border: none;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  transition: background var(--animation-duration) ease;
}

.media-preview-remove:hover {
  background: var(--color-status-off);
}

/* メッセージ内メディア表示 */
.message-media {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.message-media-item {
  position: relative;
  max-width: 300px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--animation-duration) ease;
}

.message-media-item:hover {
  transform: scale(1.02);
}

.message-media-item img {
  width: 100%;
  height: auto;
  min-height: 80px;
  max-height: 300px;
  object-fit: contain;
  display: block;
  background: var(--color-surface-alt);
}

.message-media-actions {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.message-media-item:hover .message-media-actions,
.message-media-item:focus-within .message-media-actions {
  opacity: 1;
}

/* ノート閲覧中の画像 hover に出す「詳細」ボタン (media-detail-hover.ts が 1 個だけ生成し、
   hover 中の画像の右上に fixed で重ねる。本文 DOM には挿入しない)。
   見た目はチャットの添付画像の hover アクション (.message-media-action-btn) と同一部品で、
   ここでは配置の上書きだけを持つ */
.media-detail-hover-btn {
  position: fixed;
  transform: translateX(-100%);
  z-index: 1200;
}

.media-detail-hover-btn:hover {
  /* 共通部品の scale(1.1) は translateX と競合するため、fixed 配置ではそのまま */
  transform: translateX(-100%);
}

.message-media-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--color-button-text);
}

.message-media-action-btn:hover {
  background: rgba(0, 0, 0, 0.9);
  transform: scale(1.1);
}

.message-media-action-btn svg {
  display: block;
}

/* ファイル添付表示 */
.message-file-item {
  display: flex;
  align-items: center;
  padding: 12px;
  background: var(--color-surface-alt);
  min-height: 60px;
  /* 画像用の max-width: 300px (.message-media-item) はファイル box には狭すぎて
   * 長いファイル名が何行も折り返すため上書き解除。 bubble の自然な最大幅まで広がる */
  max-width: none;
}

.message-file-item .file-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
  cursor: pointer;
}

.message-file-item .file-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-text);
  flex-shrink: 0;
}

.message-file-item .file-name {
  flex: 1;
  min-width: 0;
  font-size: 0.875rem;
  color: var(--color-text);
  /* 全文表示 + 自然な折り返し:
   * - word-break: normal で「M26040023_」 等の連続英数字を途中で切らない
   * - overflow-wrap: break-word で box からはみ出す時だけ単語境界で折り返す
   * - 日本語は word-break:normal でも文字単位で自然に折り返される
   * 省略 (ellipsis / line-clamp) は使わない、 ファイル名は省略せず全部見せる */
  word-break: normal;
  overflow-wrap: break-word;
}

/* メディアライブラリ */
.media-panel {
  display: none;
  padding: 24px;
  background: var(--color-background);
}

.media-panel.active {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--header-height, 80px));
  overflow-y: auto;
}

.media-library-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    transform var(--animation-duration) ease,
    box-shadow var(--animation-duration) ease;
}

.media-library-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.media-library-item--selected {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.media-library-item-checkbox {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 4px;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.media-library-item-checkbox input[type='checkbox'] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  margin: 0;
  border: 1px solid var(--color-border);
}

.media-library-item img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.media-library-item .file-icon-preview {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  background: var(--color-bg-hover);
  color: var(--color-muted);
}

/* SVGアイコン表示用スタイル */
.media-library-item .file-icon-preview--svg {
  padding: 20%;
  transition: all 0.2s ease;
  color: var(--file-icon-color, var(--color-muted));
}

.media-library-item .file-icon-preview--svg:hover {
  background: var(--color-surface-alt);
  transform: scale(1.02);
}

.media-library-item .file-icon-preview--svg svg {
  width: 100%;
  height: 100%;
  max-width: 80px;
  max-height: 80px;
}

/* モバイル向けSVGアイコンサイズ調整 */
@media (max-width: 768px) {
  .media-library-item .file-icon-preview--svg {
    padding: 15%;
  }

  .media-library-item .file-icon-preview--svg svg {
    max-width: 60px;
    max-height: 60px;
  }

  .file-icon-preview--clickable svg {
    width: 80px;
    height: 80px;
  }
}

@media (max-width: 480px) {
  .media-library-item .file-icon-preview--svg {
    padding: 12%;
  }

  .media-library-item .file-icon-preview--svg svg {
    max-width: 48px;
    max-height: 48px;
  }

  .file-icon-preview--clickable svg {
    width: 64px;
    height: 64px;
  }

  .file-icon-preview--clickable {
    padding: 24px;
  }
}

/* 編集モーダル内のファイルアイコン */
.file-icon-preview--clickable {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--file-icon-color, var(--color-muted));
  border-radius: 8px;
}

.file-icon-preview--clickable:hover {
  background: var(--color-surface-alt);
  transform: scale(1.02);
}

.file-icon-preview--clickable svg {
  width: 120px;
  height: 120px;
  margin-bottom: 12px;
}

.file-icon-label {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 8px;
}

.file-icon-preview--clickable:hover .file-icon-label {
  color: var(--color-text);
}

.media-library-item-info {
  padding: 8px;
}

.media-library-item-name {
  font-size: 0.85rem;
  color: var(--color-text);
  margin: 0 0 4px 0;
  display: flex;
  min-width: 0;
}

.media-library-item-basename {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.media-library-item-ext {
  white-space: nowrap;
  flex-shrink: 0;
  color: var(--color-muted);
}

.media-library-item-meta {
  font-size: 0.65rem;
  color: var(--color-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  /* 文字を大きくすると 2 項目が横に並びきらなくなる。 その時は折り返して
     カードの外にはみ出さないようにする */
  flex-wrap: wrap;
  gap: 0 6px;
}

.media-library-item-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  padding: 0;
}

.media-library-item-actions button {
  flex: 1;
  padding: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--animation-duration) ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-library-item-actions button:hover {
  background: var(--color-hover);
  border-color: var(--color-accent-text);
}

.media-library-item-actions button.delete {
  color: var(--color-status-off);
}

.media-library-item-actions button.delete:hover {
  background: var(--color-status-off);
  color: var(--color-button-text);
  border-color: var(--color-status-off);
}

.media-library-item-actions button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--color-surface);
  border-color: var(--color-border);
}

.media-library-item-actions button:disabled:hover {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.media-scroll-sentinel {
  height: 1px;
  width: 100%;
}

.media-library-item-actions button {
  position: relative;
}

.media-library-item-actions button::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  background-color: currentColor;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.media-library-item-actions button[data-action='download']::before {
  -webkit-mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Cpath d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"%3E%3C/path%3E%3Cpolyline points="7 10 12 15 17 10"%3E%3C/polyline%3E%3Cline x1="12" y1="15" x2="12" y2="3"%3E%3C/line%3E%3C/svg%3E');
  mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Cpath d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"%3E%3C/path%3E%3Cpolyline points="7 10 12 15 17 10"%3E%3C/polyline%3E%3Cline x1="12" y1="15" x2="12" y2="3"%3E%3C/line%3E%3C/svg%3E');
}

.media-library-item-actions button[data-action='copy-image']::before {
  -webkit-mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Crect x="9" y="9" width="13" height="13" rx="2" ry="2"%3E%3C/rect%3E%3Cpath d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"%3E%3C/path%3E%3C/svg%3E');
  mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Crect x="9" y="9" width="13" height="13" rx="2" ry="2"%3E%3C/rect%3E%3Cpath d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"%3E%3C/path%3E%3C/svg%3E');
}

.media-library-item-actions button[data-action='edit-media']::before {
  -webkit-mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Cpath d="M17 3a2.83 2.83 0 1 1 4 4L7.5 20.5 2 22l1.5-5.5L17 3z"%3E%3C/path%3E%3C/svg%3E');
  mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Cpath d="M17 3a2.83 2.83 0 1 1 4 4L7.5 20.5 2 22l1.5-5.5L17 3z"%3E%3C/path%3E%3C/svg%3E');
}

.media-library-item-actions button[data-action='delete']::before {
  -webkit-mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Cpolyline points="3 6 5 6 21 6"%3E%3C/polyline%3E%3Cpath d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"%3E%3C/path%3E%3C/svg%3E');
  mask-image: url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"%3E%3Cpolyline points="3 6 5 6 21 6"%3E%3C/polyline%3E%3Cpath d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"%3E%3C/path%3E%3C/svg%3E');
}

/* ========================================
   メディアピッカーモーダル
   ======================================== */

/* プラグイン設定モーダル等 (.confirm-dialog: z-index 10200) からサブモーダルとして開かれるため、 親より上のレイヤーに置く */
.popup-overlay#media-picker-modal {
  z-index: 10300;
}

.media-picker-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.media-picker-tab {
  padding: 12px 24px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.media-picker-tab:hover {
  color: var(--color-text);
  background: var(--color-bg-hover);
}

.media-picker-tab--active {
  color: var(--color-accent-text);
  border-bottom-color: var(--color-accent-text);
}

/* プラグイン由来のアクションボタン (画像生成など)。タブと区別するため塗りつぶしで右寄せ。
   薄い accent-base だと背景画像に埋もれるため、濃い primary を使う */
.media-picker-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  align-self: center;
  padding: 8px 16px;
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 6px;
  color: #fff;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.media-picker-action svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.media-picker-action + .media-picker-action {
  margin-left: 8px;
}

.media-picker-action:hover {
  filter: brightness(0.9);
}

.media-picker-panel {
  display: none;
}

.media-picker-panel--active {
  display: block;
}

.media-picker-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0 8px;
  margin-bottom: 16px;
}

/* 絞り込み中チップの行（フィルタバーとグリッドの間、空なら共通CSSで非表示） */
.media-active-filters {
  margin: -8px 8px 16px;
}

/* AIファイル名の候補選択ダイアログ */
.media-filename-candidate-dialog {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  min-width: 300px;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.media-filename-candidate-dialog__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.media-filename-candidate-dialog__note {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  margin: 0 0 4px;
}

.media-filename-candidate {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  cursor: pointer;
  text-align: left;
}

.media-filename-candidate:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-alt);
}

.media-filename-candidate__label {
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1px 8px;
}

.media-filename-candidate__value {
  word-break: break-all;
}

.media-filename-candidate-dialog__cancel {
  margin-top: 6px;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
  cursor: pointer;
}

.media-filename-candidate-dialog__cancel:hover {
  color: var(--color-text);
}

/* タグ・アップした人フィルタ箱（select-search、同じ行の select・ソートボタンと高さ40pxで揃える） */
.media-filter-box {
  flex-shrink: 0;
}

.media-filter-box .select-search__trigger {
  height: 40px;
  border-radius: 6px;
  font-size: 0.9rem;
}

#media-picker-filter-container {
  align-items: center;
}
#media-view-search {
  max-height: 40px;
}
#media-view-filter,
#media-view-period {
  padding: 12px;
}

input[type='text'].media-picker-search {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9rem;
}

.media-picker-select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9rem;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
}

.media-picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  min-height: 300px;
  max-height: 400px;
  overflow-y: auto;
  padding: 8px;
}

/* Media view specific - larger grid items and more visible area */
#media-view .media-picker-grid {
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  max-height: none;
  gap: 16px;
}

/* ドラッグオーバー時のスタイル */
#media-view.media-view--dragover {
  position: relative;
}

#media-view.media-view--dragover::before {
  content: 'ここにファイルをドロップ';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(var(--color-primary-rgb, 59, 130, 246), 0.1);
  border: 3px dashed var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  z-index: 1000;
  pointer-events: none;
}

.media-picker-item {
  position: relative;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--color-surface);
}

.media-picker-item:hover {
  border-color: var(--color-accent-text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.media-picker-item--selected {
  border-color: var(--color-accent-text);
  background: rgba(var(--color-accent-rgb), 0.1);
}

.media-picker-item--selected::after {
  content: '';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  background: var(--color-accent-text);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 14px 14px;
  z-index: 1;
}

.media-picker-item-preview {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.media-picker-item-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-picker-file-icon {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
}

.media-picker-item-name {
  font-size: 0.85rem;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

.media-picker-upload-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.media-picker-dropzone {
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  padding: 60px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--color-surface);
}

.media-picker-dropzone:hover,
.media-picker-dropzone--active {
  border-color: var(--color-accent-text);
  background: rgba(var(--color-accent-rgb), 0.05);
}

.media-picker-dropzone svg {
  margin: 0 auto 16px;
  color: var(--color-muted);
}

.media-picker-dropzone p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.media-picker-upload-preview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.btn {
  padding: 8px 16px;
  border-radius: 5px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background: var(--color-accent-bg);
  color: var(--color-button-text);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.btn-primary:disabled {
  background: var(--color-muted);
  cursor: not-allowed;
  opacity: 0.5;
}

.btn:not(.btn-primary):not(.btn-danger):not(.btn-warning) {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn:not(.btn-primary):not(.btn-danger):not(.btn-warning):hover {
  background: var(--color-bg-hover);
}

/* さらに読み込むボタン */
.load-more-btn {
  width: auto;
  padding: 6px 16px;
  margin: 8px auto;
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 400;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  opacity: 0.7;
}

.load-more-btn:hover {
  opacity: 1;
  background: var(--color-surface);
  border-color: var(--color-accent);
}

.load-more-btn:active {
  transform: scale(0.98);
}

.load-more-btn:disabled {
  background: transparent;
  color: var(--color-muted);
  cursor: not-allowed;
  opacity: 0.4;
}

/* 参加者モーダル */
.participants-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.participant-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: var(--color-surface);
  border-radius: 8px;
  border: 1px solid var(--color-border);
  transition: background 0.2s ease;
}

.participant-item:hover {
  background: var(--color-bg-hover);
}

.participant-item-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-accent-bg);
  color: var(--color-button-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 600;
  flex-shrink: 0;
}

.participant-item-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.participant-item-info {
  flex: 1;
  display: flex;
  justify-content: space-between;
}

.participant-item-name {
  font-weight: 500;
  color: var(--color-text);
}

.participant-item-role {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.participant-item-remove-btn {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 6px;
  flex-shrink: 0;
}

.participant-item-remove-btn.delete {
  color: var(--color-status-off);
}

.participant-item-remove-btn:hover {
  background: var(--color-hover);
  border-color: var(--color-accent-text);
}

.participant-item-remove-btn.delete:hover {
  background: var(--color-status-off);
  color: var(--color-button-text);
  border-color: var(--color-status-off);
}

.participants-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.participants-action-btn {
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: transparent;
  color: var(--color-text);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.participants-action-btn:hover {
  background: var(--color-surface);
  border-color: var(--color-accent-text);
}

.participants-action-btn svg {
  width: 18px;
  height: 18px;
}

/* メンバー追加モーダル */
.username-suggestions {
  margin-top: 8px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  max-height: 320px;
  overflow-y: auto;
  display: none;
}

.username-suggestions:not(:empty) {
  display: block;
}

.username-suggestion-item {
  padding: 12px 14px;
  cursor: pointer;
  transition: background 0.2s ease;
  line-height: 1.4;
}

.username-suggestion-item:hover {
  background: var(--color-hover);
}

.username-suggestion-item:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

/* popup-actions はui.cssに統一（重複定義を解消） */

/* 返信引用表示 */
.reply-quote {
  background: var(--color-surface-alt);
  border: 1px solid rgba(var(--color-accent-rgb, 101, 116, 205), 0.5);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
  position: relative;
  z-index: 10;
}

.reply-quote__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.reply-quote__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
}

.reply-quote__close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background 0.2s ease;
}

.reply-quote__close:hover {
  background: var(--color-hover);
}

.reply-quote__body {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.03);
}

/* メッセージ内の返信引用表示（LINEスタイル） */
.message-reply-quote {
  padding: 8px 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: background 0.2s;
}

.message-reply-quote:hover {
  background: rgba(0, 0, 0, 0.05);
}

.message-reply-quote__header {
  font-weight: 600;
  font-size: 0.7rem;
  color: var(--bubble-text);
  opacity: 0.85;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.message-reply-quote__body {
  font-size: 0.75rem;
  color: var(--bubble-text);
  opacity: 0.65;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-word;
}

/* メッセージハイライト（返信元へのジャンプ時） */
.message--highlight {
  animation: messageHighlight 2s ease-in-out;
}

@keyframes messageHighlight {
  0%,
  100% {
    background: transparent;
  }
  50% {
    background: rgba(var(--color-primary-rgb, 79, 70, 229), 0.1);
  }
}

/* Password field wrapper */
.password-field-wrapper {
  position: relative;
  display: inline-block;
  width: 100%;
}

/* Password toggle button */
.password-toggle-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  transition: color 0.2s ease;
  z-index: 10;
}

.password-toggle-btn:hover {
  color: var(--color-text);
}

.password-toggle-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.password-toggle-btn .eye-icon {
  display: block;
}

.password-toggle-btn .eye-icon.hidden {
  display: none;
}

/* Activity Logs Modal */
#activity-logs-modal .popup-container {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#activity-logs-modal .popup-body {
  overflow-y: auto;
}

#log-filter-reset:hover {
  background: var(--color-bg);
  border-color: var(--color-accent-text);
}

#activity-logs-table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.15s ease;
}

#activity-logs-table tbody tr:hover {
  background: var(--color-bg);
}

#activity-logs-table tbody tr:nth-child(even) {
  background: var(--color-bg);
}

#activity-logs-table tbody tr:nth-child(even):hover {
  background: var(--color-surface-alt);
}

#activity-logs-table tbody td {
  padding: 14px 16px;
  color: var(--color-text);
  font-size: 0.9rem;
  line-height: 1.5;
}

#activity-logs-table tbody td:first-child {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  white-space: nowrap;
}

#log-page-prev:not(:disabled),
#log-page-next:not(:disabled) {
  opacity: 1;
  cursor: pointer;
}

#log-page-prev:not(:disabled):hover,
#log-page-next:not(:disabled):hover {
  background: var(--color-surface);
  border-color: var(--color-accent-text);
}

#log-page-prev:disabled,
#log-page-next:disabled {
  cursor: not-allowed;
}

/* Recent Activity Items */
#recent-activity .activity-item {
  transition: background-color 0.15s ease;
}

#recent-activity .activity-item:hover {
  background: var(--color-bg);
}

#recent-activity .activity-item:last-child {
  border-bottom: none;
}

#recent-activity .activity-item[onclick] {
  cursor: pointer;
}

#recent-activity .activity-item[onclick]:active {
  background: var(--color-surface-alt);
}

/* ========================================
   管理者メニュー
   ======================================== */

.media-admin-panel {
  padding: 20px;
}

.media-admin-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
}

.media-admin-section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 8px 0;
}

.media-admin-section-description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0 0 20px 0;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-bg);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent-bg), var(--color-accent-hover));
  transition: width 0.3s ease;
  border-radius: 4px;
}

.success-message {
  padding: 12px 16px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 6px;
  color: rgb(21, 128, 61);
  font-size: 0.9rem;
}

.success-message p {
  margin: 4px 0;
}

.success-message details {
  margin-top: 8px;
  cursor: pointer;
}

.success-message summary {
  font-weight: 500;
  user-select: none;
  padding: 4px 0;
}

.success-message summary:hover {
  color: rgb(34, 197, 94);
}

.error-message {
  padding: 12px 16px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 6px;
  color: rgb(185, 28, 28);
  font-size: 0.9rem;
}

.btn--primary {
  background: var(--color-accent-bg);
  color: var(--color-button-text);
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn--primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn--primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ========================================
   処理中モーダル
   ======================================== */

.processing-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.processing-modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.processing-modal__content {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 48px 40px;
  max-width: 500px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.processing-modal__spinner {
  width: 60px;
  height: 60px;
  margin: 0 auto 24px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-accent-bg);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.processing-modal__title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 12px 0;
}

.processing-modal__message {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin: 0 0 24px 0;
}

.processing-modal__progress {
  margin-bottom: 24px;
}

.processing-modal__progress-bar {
  width: 100%;
  height: 12px;
  background: var(--color-bg);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 12px;
}

.processing-modal__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent-bg), var(--color-accent-hover));
  transition: width 0.5s ease;
  border-radius: 6px;
}

.processing-modal__progress-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.processing-modal__warning {
  font-size: 0.9rem;
  color: #f59e0b;
  margin: 0;
  padding: 12px 16px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 8px;
}

/* ========================================
   Note Picker (ノートピッカー)
   ======================================== */

/* ノートピッカーフィルタ（メディアピッカーと統一） */
.note-picker-filter {
  display: flex;
  gap: 12px;
  padding: 0 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* ノートピッカーグリッド（3列ベース、レスポンシブ） */
.note-picker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  min-height: 350px;
  max-height: 450px;
  overflow-y: auto;
  overscroll-behavior: contain; /* スクロール伝播を防止 */
  padding: 8px;
}

/* レスポンシブ対応 */
@media (max-width: 800px) {
  .note-picker-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 550px) {
  .note-picker-grid {
    grid-template-columns: 1fr;
  }
}

/* ノートピッカー内のknowledge-itemスタイル調整 */
.note-picker-grid .knowledge-item {
  border: 2px solid var(--color-border);
  cursor: pointer;
  min-width: 0; /* グリッドに収まるように */
  overflow: hidden;
  height: fit-content; /* 高さを内容に合わせる */
  max-height: 180px; /* 最大高さを制限 */
  align-self: start; /* グリッド内で上揃え */
  position: relative; /* チェックマーク用 */
}

.note-picker-grid .knowledge-item:hover {
  border-color: var(--color-accent-text);
}

/* 選択状態のチェックマーク */
.note-picker-grid .note-picker-item.selected::after {
  content: '';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  background: var(--color-accent-text);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 14px 14px;
}

/* ノートピッカー内のタイトルを折り返し可能に */
.note-picker-grid .knowledge-item-title {
  white-space: normal;
  word-break: break-word;
  -webkit-line-clamp: 2;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ノートピッカー内のメタ情報を縦並びに */
.note-picker-grid .knowledge-item-meta {
  flex-wrap: wrap;
  gap: 4px 8px;
}

/* 選択状態 */
.note-picker-grid .note-picker-item.selected {
  border-color: var(--color-accent-text);
  background: rgba(var(--color-accent-rgb), 0.08);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.15);
}

/* ノートピッカーフッター */
.note-picker-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px;
  border-top: 1px solid var(--color-border);
}

/* 新規作成エリア */
.note-picker-create-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.note-picker-create-message {
  text-align: center;
  color: var(--color-muted);
}

.note-picker-create-message svg {
  margin-bottom: 16px;
  opacity: 0.6;
}

.note-picker-create-message p {
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.note-picker-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-muted);
  grid-column: 1 / -1;
}

/* ノートプレビュー（送信前） */
.note-preview-container {
  display: none;
  padding: 8px;
  border-bottom: 1px solid var(--color-border);
  max-height: 200px;
  overflow-y: auto;
}

.note-preview-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.note-preview-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: 6px;
  color: var(--color-button-text);
}

.note-preview-icon svg {
  width: 16px;
  height: 16px;
}

.note-preview-info {
  flex: 1;
  min-width: 0;
}

.note-preview-title {
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-preview-meta {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.note-preview-remove {
  background: transparent;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.note-preview-remove:hover {
  background: var(--color-error);
  color: var(--color-button-text);
}

/* メッセージ内ノートカード */
.message-note-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: var(--color-self);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-top: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.message-note-card:hover {
  opacity: 0.85;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.message-note-card:hover .message-note-card-arrow {
  transform: translateX(2px);
}

.message-note-card--not-found {
  cursor: default;
  opacity: 0.75;
}

.message-note-card--not-found:hover {
  opacity: 0.75;
  box-shadow: none;
}

.message-note-card-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: 6px;
  color: var(--color-button-text);
}

.message-note-card-icon svg {
  width: 14px;
  height: 14px;
}

.message-note-card-content {
  flex: 1;
  min-width: 0;
}

.message-note-card-title {
  font-weight: normal;
  font-size: 0.9rem;
  color: var(--color-text);
}

.message-note-card-preview {
  font-size: 0.85rem;
  color: var(--color-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.message-note-card-link {
  font-size: 0.8rem;
  color: var(--color-accent-text);
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.message-note-card-arrow {
  flex-shrink: 0;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  transition: transform 0.2s ease;
}

/* ========================================
   メディアが見つからない場合の表示
   ======================================== */

.message-media-item--not-found {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: default;
  opacity: 0.75;
}

.message-media-item--not-found:hover {
  transform: none;
  opacity: 0.75;
}

.message-media-not-found-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: 6px;
  color: var(--color-button-text);
}

.message-media-not-found-icon svg {
  width: 14px;
  height: 14px;
}

.message-media-not-found-text {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ========================================
   メディアの閲覧権限がない場合の表示
   ======================================== */

/* 申請ボタンを内包するため全体の opacity は下げない (押せる要素が薄いと操作可能に見えない)。
   「見られない状態」であることは本文テキストの色 (--color-text-secondary) で示す。
   吹き出し幅が狭い場合はボタン / 状態表示を次の行へ折り返す (本文が 1 文字ずつ縦に割れるのを防ぐ) */
.message-media-item--restricted {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 10px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: default;
}

.message-media-item--restricted:hover {
  transform: none;
}

.message-media-item--restricted .message-media-restricted-text {
  color: var(--color-text-secondary);
  /* 本文はこの幅を下回るなら折り返さず、ボタン / 状態表示を次の行へ落とす */
  flex: 1 1 11em;
  min-width: 11em;
}

.message-media-restricted-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: 6px;
  color: var(--color-button-text);
}

.message-media-restricted-icon svg {
  width: 14px;
  height: 14px;
}

.message-media-restricted-text {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* 閲覧を申請するボタン / 申請中の状態表示 (設計 2026-07-25)
   主役はメッセージ本文なので、 塗りボタンにせず控えめなテキストボタンにする
   (既存 .btn-text と同じ流儀: 背景なし + 下線でクリック可能を示す) */
.message-media-request-btn {
  flex-shrink: 0;
  margin-left: auto;
  white-space: nowrap;
  padding: 2px 4px;
  font-size: 0.8rem;
  font-family: inherit;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: 4px;
  text-decoration: underline;
  cursor: pointer;
}

.message-media-request-btn:hover {
  color: var(--color-text);
}

.message-media-request-btn:focus-visible {
  outline: 2px solid var(--color-accent-bg);
  outline-offset: 2px;
}

.message-media-restricted-state {
  flex-shrink: 0;
  margin-left: auto;
  white-space: nowrap;
  padding: 2px 4px;
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

/* ========================================
   詳細設定（Progressive Disclosure）
   ======================================== */

.media-advanced-settings {
  margin-top: 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.media-info-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  margin: 0 0 12px;
  background: var(--color-surface-alt, #f0f2f5);
  border-radius: 6px;
  font-size: 0.6875rem;
  color: var(--color-text-secondary, #6b7280);
}

.media-info-item {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
}

.media-info-item svg {
  opacity: 0.6;
}

.media-info-divider {
  width: 1px;
  height: 12px;
  background: var(--color-border, #d1d5db);
}

.media-info-uploader {
  cursor: pointer;
  gap: 4px;
}

.media-info-uploader:hover {
  opacity: 0.8;
}

.media-info-uploader__avatar {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 50%;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary, rgba(255, 255, 255, 0.08));
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--color-muted);
  flex-shrink: 0;
  vertical-align: middle;
}

.media-info-uploader__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-preview-edit-row {
  display: flex;
  justify-content: center;
  padding: 4px 0 8px;
}

.media-preview-edit-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border: 1px solid var(--color-border, #d1d5db);
  border-radius: 4px;
  background: none;
  color: var(--color-text-secondary, #6b7280);
  font-size: 0.75rem;
  cursor: pointer;
  transition:
    background 0.15s,
    color 0.15s;
}

.media-preview-edit-btn:hover {
  background: var(--color-surface-alt, #f0f2f5);
  color: var(--color-text, #2c3e50);
}

.media-advanced-settings-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
  color: var(--color-text);
  transition: background 0.2s ease;
  list-style: none;
}

.media-advanced-settings-toggle::-webkit-details-marker {
  display: none;
}

.media-advanced-settings-toggle::before {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-muted);
  border-bottom: 2px solid var(--color-muted);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
  margin-right: 8px;
}

.media-advanced-settings[open] .media-advanced-settings-toggle::before {
  transform: rotate(45deg);
}

.media-advanced-settings-toggle:hover {
  background: var(--color-hover);
}

.media-advanced-settings-hint {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-muted);
}

.media-advanced-settings-content {
  padding: 16px;
  border-top: 1px solid var(--color-border);
}

.media-advanced-settings-content .media-edit-field {
  margin-bottom: 16px;
}

.media-advanced-settings-content .media-edit-field:last-child {
  margin-bottom: 0;
}

/* ========================================
   公開範囲（Visibility）
   ======================================== */

/* カードのバッジ */
.media-visibility-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  color: #fff;
  z-index: 2;
  pointer-events: none;
}

.media-visibility-badge--private {
  background: var(--color-error, #e74c3c);
}

.media-visibility-badge--role {
  background: var(--color-warning, #f39c12);
}

.media-visibility-badge--shared {
  background: var(--color-info, #3498db);
}

.media-visibility-badge--team {
  background: var(--color-success, #27ae60);
}

.media-library-item {
  position: relative;
}

/* チャット添付プレビュー: 「全員に公開」ラベル (非公開チャットに public のまま添付する時の可視化) */
.media-preview-public-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1px 2px;
  font-size: 0.5625rem;
  line-height: 1.3;
  text-align: center;
  color: #fff;
  background: rgba(0, 0, 0, 0.65);
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 2;
}

/* 編集モーダル: 公開範囲セレクト */
.media-edit-select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg-secondary, var(--color-bg));
  color: var(--color-text);
  font-size: 14px;
  cursor: pointer;
}

.media-edit-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-alpha, rgba(59, 130, 246, 0.2));
}

.media-edit-sub-field {
  margin-top: 8px;
}

.media-edit-checkbox-list {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px;
  background: var(--color-bg-secondary, var(--color-bg));
}

.media-edit-checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px;
  cursor: pointer;
  border-radius: 4px;
  font-size: 14px;
  color: var(--color-text);
}

.media-edit-checkbox-item:hover {
  background: var(--color-hover);
}

.media-edit-checkbox-item input[type='checkbox'] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.media-edit-hint {
  color: var(--color-muted);
  font-size: 13px;
  padding: 4px;
}

/* 申請により許可した相手の読み取り専用表示 (設計 2026-07-25 の 8.3)
   公開範囲のチェックボックスとは別レイヤーの許可なので、 枠を分けて示す */
.media-edit-access-grants:not(:empty) {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
}

.media-edit-access-grants__label {
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.media-edit-access-grants__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.media-edit-access-grants__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 0;
}

.media-edit-access-grants__name {
  font-size: 13px;
  color: var(--color-text);
  word-break: break-word;
}

/* 取り消しは破壊的操作。 実行系より控えめな見た目にして誤操作を防ぐ */
.media-edit-access-grants__revoke {
  flex-shrink: 0;
  background: none;
  border: none;
  padding: 4px 6px;
  font-size: 12px;
  color: var(--color-muted);
  cursor: pointer;
  border-radius: 4px;
}

.media-edit-access-grants__revoke:hover:not(:disabled) {
  color: var(--color-danger);
  background: rgba(var(--color-bg-rgb), 0.6);
}

.media-edit-access-grants__revoke:disabled {
  opacity: 0.5;
  cursor: default;
}

/* メディア重複警告モーダル (アップロード時) */
.media-duplicate-summary {
  margin: 0 0 16px 0;
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
}

.media-duplicate-details {
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.media-duplicate-summary-toggle {
  cursor: pointer;
  color: var(--color-link, var(--color-primary));
  font-size: 13px;
  user-select: none;
  padding: 4px 0;
  list-style: none;
}

.media-duplicate-summary-toggle::-webkit-details-marker {
  display: none;
}

.media-duplicate-summary-toggle::before {
  content: '▶';
  display: inline-block;
  margin-right: 6px;
  font-size: 10px;
  transition: transform 0.15s ease;
}

.media-duplicate-details[open] .media-duplicate-summary-toggle::before {
  transform: rotate(90deg);
}

.media-duplicate-list {
  list-style: none;
  margin: 8px 0 0 0;
  padding: 0;
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.media-duplicate-list-item {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text);
}

.media-duplicate-list-item:last-child {
  border-bottom: none;
}

.media-duplicate-list-item-name {
  font-weight: 600;
  word-break: break-all;
}

.media-duplicate-list-item-meta {
  color: var(--color-muted);
  font-size: 12px;
  margin-top: 2px;
  word-break: break-all;
}

/* 重複チェック (管理者メニュー) */
.media-duplicate-scan-status {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--color-surface-alt);
  border-left: 3px solid var(--color-accent-strong);
  border-radius: 4px;
  font-size: 13px;
  color: var(--color-text);
}

.media-duplicate-scan-result {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.media-duplicate-group-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px 14px;
  background: var(--color-surface);
}

.media-duplicate-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.media-duplicate-group-summary-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.media-duplicate-group-summary {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.media-duplicate-group-preset-hint {
  font-size: 12px;
  color: var(--color-muted);
  word-break: break-all;
}

.media-duplicate-group-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.media-duplicate-group-details {
  margin-top: 12px;
  border-top: 1px solid var(--color-border);
  padding-top: 8px;
}

.media-duplicate-group-summary-toggle {
  cursor: pointer;
  color: var(--color-link, var(--color-primary));
  font-size: 13px;
  padding: 4px 0;
  user-select: none;
  list-style: none;
}

.media-duplicate-group-summary-toggle::-webkit-details-marker {
  display: none;
}

.media-duplicate-group-summary-toggle::before {
  content: '▶';
  display: inline-block;
  margin-right: 6px;
  font-size: 10px;
  transition: transform 0.15s ease;
}

.media-duplicate-group-details[open] .media-duplicate-group-summary-toggle::before {
  transform: rotate(90deg);
}

.media-duplicate-item-list {
  list-style: none;
  margin: 8px 0 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.media-duplicate-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg);
}

.media-duplicate-item-checkbox {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.media-duplicate-item-thumb {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-alt);
  border-radius: 4px;
  overflow: hidden;
  font-size: 10px;
  color: var(--color-muted);
}

.media-duplicate-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-duplicate-item-thumb--placeholder {
  font-weight: 600;
  text-transform: uppercase;
}

.media-duplicate-item-info {
  flex: 1;
  min-width: 0;
}

.media-duplicate-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  word-break: break-all;
}

.media-duplicate-item-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--color-accent-strong);
  color: var(--color-button-text, #fff);
  font-size: 10px;
  font-weight: 600;
}

.media-duplicate-item-meta {
  font-size: 11px;
  color: var(--color-muted);
  margin-top: 2px;
}

.media-duplicate-custom-delete {
  margin-top: 10px;
}