/* サムネイル・ビューワー関連 */
.new-request-area .column.thumbnail-column {
  flex: 0 0 var(--nr-thumb-col-width);
  width: var(--nr-thumb-col-width);
  min-width: var(--nr-thumb-col-min);
  max-width: var(--nr-thumb-col-max);
  overflow-y: auto;
  height: 100%;
  scrollbar-width: thin;
  scrollbar-color: #b0b0b0 transparent;
  background: var(--ds-color-surface-muted);
}
.new-request-area[data-layout-mode="compact"] .thumbnail-square {
  width: 94%;
}

.new-request-area[data-layout-mode="constrained"] .thumbnail-square {
  width: 100%;
  margin: var(--ds-space-1) auto;
}

.new-request-area[data-layout-mode="constrained"] .thumbnail-square img {
  max-width: 84%;
  max-height: 84%;
}
.thumbnail-image {
  width: 100%;
  margin-bottom: var(--ds-space-2);
  cursor: pointer;
  border-radius: var(--ds-radius-sm);
  transition: outline 0.2s;
}
.thumbnail-column.dragover {
  outline: 2px dashed var(--ds-color-primary);
  background-color: var(--ds-color-primary-soft);
  transition: all 0.2s ease;
}
body.new-request-global-drop-active::before {
  content: 'アプリ画面内のどこでもドロップできます';
  position: fixed;
  inset: 12px 16px 16px;
  display: grid;
  place-items: center;
  border: 2px dashed var(--ds-color-primary);
  border-radius: calc(var(--ds-radius-lg) + 4px);
  background: rgba(231, 241, 255, 0.22);
  color: var(--ds-color-primary);
  font-size: var(--ds-font-lg);
  font-weight: 700;
  letter-spacing: 0.04em;
  pointer-events: none;
  z-index: 30;
}

body.new-request-global-drop-active .new-request-area:not(.approval-modal) {
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.18), var(--ds-shadow-soft);
}

.new-request-area.global-drop-active::after {
  content: 'ここへ書類をドロップ';
  position: absolute;
  inset: 10px;
  display: grid;
  place-items: center;
  border: 2px dashed var(--ds-color-primary);
  border-radius: calc(var(--ds-radius-lg) - 2px);
  background: rgba(231, 241, 255, 0.78);
  color: var(--ds-color-primary);
  font-size: var(--ds-font-lg);
  font-weight: 700;
  letter-spacing: 0.04em;
  pointer-events: none;
  z-index: 8;
}
.new-request-area.global-drop-active .column {
  background-color: rgba(231, 241, 255, 0.9);
}
.new-request-area .column.viewer-column {
  background-color: #fafafa !important;
  min-height: 100px;
  border-right: 2px solid #eee;
}
.thumbnail-square {
  width: 90%; /* 元に戻す */
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--ds-radius-sm);
  box-sizing: border-box;
  margin: var(--ds-space-2) auto;
  transition: border 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.thumbnail-square img {
  max-width: 80%; /* サムネイル本体を10%縮小 */
  max-height: 80%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 4px;
}

.thumbnail-square.selected {
  border: 2px solid var(--ds-color-primary);
  box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.2);
}

.thumbnail-square:not(.selected):hover {
  border: 1px solid #222;
}

.thumbnail-square:not(.selected) {
  border: none;
}

.thumbnail-square.checked {
  background: #c6ddff !important;
  transition: background 0.2s;
}

/* サムネイル下のファイル名を中央下部に表示・背景透明・省略 */
.thumbnail-filename-label {
  width: 100%;
  text-align: center;
  font-size: var(--ds-font-xs);
  line-height: var(--ds-line-compact);
  margin-top: var(--ds-space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: transparent;
  color: var(--ds-color-text-sub);
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  pointer-events: none;
}

/* 通し番号ラベルも背景透明 */
.thumbnail-number-label {
  background: transparent;
  color: var(--ds-color-text-sub);
  font-size: var(--ds-font-xs);
  line-height: var(--ds-line-compact);
  padding: 0 var(--ds-space-2);
  border-radius: var(--ds-radius-sm);
  position: absolute;
  top: var(--ds-space-1);
  left: var(--ds-space-2);
  z-index: 2;
  pointer-events: none;
}

/* ×ボタンの背景透明・ホバー時暗く */
.thumbnail-remove-btn {
  position: absolute;
  top: 2px;
  right: var(--ds-space-1);
  width: 22px;
  height: 22px;
  border: none;
  background: transparent;
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--ds-font-sm);
  z-index: 2;
  color: var(--ds-color-text-sub);
  transition: background 0.2s, color 0.2s;
}
.thumbnail-remove-btn:hover {
  background: #888;
  color: #fff;
}

/* チェックボタンのスタイル */
.thumbnail-check-btn {
  position: absolute;
  top: 3px !important;
  right: 32px;
  width: 24px;
  height: 24px;
  cursor: pointer;
  z-index: 2;
  background: transparent;
  border-radius: 50%;
  transition: background 0.2s;
}
.thumbnail-check-btn:hover {
  background: rgba(25, 118, 210, 0.1);
  border-radius: 50%;
}

/* Chrome, Edge, Safari用 */
.new-request-area .column.thumbnail-column::-webkit-scrollbar {
  width: 8px;
  background: transparent;
}
.new-request-area .column.thumbnail-column::-webkit-scrollbar-thumb {
  background: #b0b0b0;
  border-radius: 8px;
}
.new-request-area .column.thumbnail-column::-webkit-scrollbar-track {
  background: transparent;
}

/* サムネイルカラムのスクロールバーを透明に */
.thumbnail-column {
  scrollbar-color: transparent transparent; /* Firefox用 */
}
.thumbnail-column::-webkit-scrollbar {
  background: transparent !important;
}
.thumbnail-column::-webkit-scrollbar-thumb {
  background: #b0b0b0;
  border-radius: 8px;
}
.thumbnail-column::-webkit-scrollbar-track {
  background: transparent !important;
}