/* 三栏布局使用 minmax(0, …) 防止长文件名和代码撑破视口。 */
:root {
  color-scheme: light;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  color: #18243a;
  background: #fff;
  font-size: 14px;
  --border: #e5eaf1;
  --muted: #7a8598;
  --blue: #2869ed;
}
* {
  box-sizing: border-box;
}
/* 页面高度固定为视口，各面板自行滚动，防止长预览撑高整页。 */
body {
  margin: 0;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
button, input, select {
  font: inherit;
}
button, select {
  cursor: pointer;
}
button, select, input {
  border: 1px solid #dae1ec;
  border-radius: 7px;
  background: white;
  color: inherit;
}
button {
  padding: 8px 12px;
}
button:hover {
  background: #eff5ff;
}
button:disabled {
  opacity: .4;
  cursor: default;
}
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
[hidden] {
  display: none !important;
}
h1, h2, h3, p {
  margin: 0;
}
h1 {
  font-size: 24px;
  letter-spacing: 1px;
}
h2 {
  font-size: 17px;
}
.page-header {
  height: 90px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  gap: 18px;
  align-items: center;
}
.brand-icon {
  display: block;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}
.brand p {
  color: var(--muted);
  margin-top: 3px;
}
.scan-time {
  padding: 10px 14px;
  background: #fafbfe;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: #647089;
  font-size: 12px;
}
.page-header, .status-bar {
  flex-shrink: 0;
}
.workspace {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.directory-sidebar {
  width: var(--directory-width, 240px);
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  padding: 22px 12px;
  overflow: auto;
  overscroll-behavior: contain;
}
.directory-sidebar h2 {
  margin: 0 14px 22px;
}
/* 分隔条使用独立命中区域；拖动时通过指针捕获保持连续操作。 */
.directory-resizer {
  position: relative;
  flex: 0 0 6px;
  margin-left: -3px;
  margin-right: -3px;
  z-index: 2;
  cursor: col-resize;
  touch-action: none;
  outline-offset: -2px;
}
.directory-resizer::after {
  content: '';
  position: absolute;
  inset: 0 2px;
  background: transparent;
  transition: background 120ms ease;
}
.directory-resizer:hover::after, .directory-resizer:focus-visible::after, body.resizing-directory .directory-resizer::after {
  background: #6796ee;
}
body.resizing-directory, body.resizing-directory * {
  cursor: col-resize !important;
  user-select: none !important;
}
.tree-row {
  display: flex;
  align-items: center;
  min-height: 36px;
  border-radius: 6px;
}
.tree-row.active {
  background: #eaf2ff;
  color: #205ac6;
}
/* 箭头使用 CSS 绘制，避免不同系统的字符字形、基线与粗细不一致。 */
.tree-toggle {
  display: grid;
  place-items: center;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 0;
  color: #7b879b;
  background: transparent;
}
.tree-toggle::before {
  content: '';
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 150ms ease;
}
.tree-toggle[aria-expanded="true"]::before {
  transform: translateY(-2px) rotate(45deg);
}
.tree-toggle:disabled {
  opacity: 1;
}
.tree-toggle:disabled::before {
  visibility: hidden;
}
.tree-toggle:hover:not(:disabled) {
  color: var(--blue);
  background: #dceaff;
}
.tree-name {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
  border: 0;
  background: transparent;
  padding: 9px 6px;
  text-align: left;
}
.tree-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tree-folder-icon {
  display: inline-block;
  flex: 0 0 20px;
  width: 20px;
  height: 18px;
  background: url('./folder.svg') center / contain no-repeat;
}
.tree-children {
  padding-left: 16px;
}
.folder-symbol {
  color: #3887ee;
  margin-right: 7px;
}
.file-panel {
  flex: 1;
  min-width: 0;
  min-height: 0;
  padding: 24px;
  overflow: auto;
  overscroll-behavior: contain;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  margin-bottom: 22px;
}
.breadcrumbs button {
  border: 0;
  padding: 2px;
  color: #6d7a90;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.section-heading h2 {
  font-size: 28px;
}
.section-heading p {
  color: var(--muted);
  margin-top: 7px;
}
.toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}
.search-field {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  border: 1px solid #dae1ec;
  border-radius: 8px;
  padding: 0 14px;
  flex: 1;
  min-width: 0;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
/* 聚焦反馈放在整个搜索控件上，输入框内部不再叠加第二层边框。 */
.search-field:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px #2869ed18;
}
.search-field > span {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  border: 1.5px solid #8a96aa;
  border-radius: 50%;
  font-size: 0;
}
.search-field > span::after {
  content: '';
  position: absolute;
  right: -4px;
  bottom: -3px;
  width: 6px;
  height: 1.5px;
  background: #8a96aa;
  transform: rotate(45deg);
  border-radius: 1px;
}
.search-field input {
  flex: 1;
  min-width: 0;
  width: 100%;
  padding: 11px 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
.search-field input:focus-visible {
  outline: none;
}
.search-field input::placeholder {
  color: #8b96a8;
}
/* 箭头由外层伪元素绘制，不依赖图片加载；点击仍交给原生 select。 */
.type-filter-field {
  position: relative;
  flex-shrink: 0;
}
.type-filter-field::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 16px;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid #6b7890;
  border-bottom: 1.5px solid #6b7890;
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
select {
  appearance: none;
  min-height: 44px;
  padding: 10px 38px 10px 14px;
  max-width: 180px;
  border-radius: 8px;
  width: 100%;
}
select:hover {
  border-color: #aebed5;
}
@media (prefers-reduced-motion: reduce) {
  .tree-toggle::before, .search-field {
    transition: none;
  }
}
.table-scroll {
  overflow-x: auto;
}
.file-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  white-space: nowrap;
}
.file-table thead {
  background: #f5f7fa;
  font-size: 12px;
}
.file-table th {
  color: #58647a;
  font-weight: 600;
  padding: 12px 10px;
}
.file-table th button {
  border: 0;
  padding: 0;
  background: transparent;
  font-weight: inherit;
}
.file-table td {
  border-bottom: 1px solid #edf0f5;
  /* 34px 图标配合上下各 10px 留白，普通行约 55px；搜索路径可自然增高。 */
  padding: 10px;
  vertical-align: middle;
  color: #657188;
  font-size: 13px;
}
.file-table tr.selected {
  background: #e6f0ff;
}
.file-table tbody tr:hover {
  background: #f4f8ff;
}
.file-name-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.file-name {
  display: flex;
  min-width: 0;
  gap: 11px;
  align-items: center;
  border: 0;
  background: transparent;
  padding: 0;
  color: #18243a;
  text-align: left;
}
/* 宽度约束阻止表格被长名称撑开，原始名称通过 title 和复制操作完整保留。 */
.file-label {
  display: block;
  width: max-content;
  max-width: clamp(90px, 20vw, 320px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
body.preview-open .file-label {
  max-width: clamp(90px, 14vw, 220px);
}
.search-path {
  display: block;
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
.copy-name-button {
  position: relative;
  flex: 0 0 26px;
  width: 26px;
  height: 28px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #8b99af;
}
.copy-name-button::before, .copy-name-button::after {
  content: '';
  position: absolute;
  width: 9px;
  height: 11px;
  border: 1.3px solid currentColor;
  border-radius: 2px;
}
.copy-name-button::before {
  top: 6px;
  left: 7px;
}
.copy-name-button::after {
  top: 10px;
  left: 11px;
  background: #fff;
}
.copy-name-button:hover {
  color: var(--blue);
  background: transparent;
}
.file-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #e8efff;
  color: #4274d7;
  width: 30px;
  height: 34px;
  border-radius: 5px;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}
.file-icon.directory {
  width: 30px;
  height: 34px;
  border-radius: 0;
  /* 占位与其他文件图标一致；补偿 SVG 内部留白，让文件夹外轮廓接近 30px 宽。 */
  background: url('./folder.svg') center / 34px 31px no-repeat;
}
.file-icon.image {
  background: #e8f5ed;
  color: #388661;
}
.file-icon.text {
  background: #eeeaff;
  color: #7557c9;
}
/* 行内操作保持可见，触屏与键盘用户无需悬停即可发现。 */
.file-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.file-action {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 9px;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: #3267bd;
  font-size: 12px;
  text-decoration: none;
  white-space: nowrap;
}
.file-action:hover {
  background: transparent;
  color: #174fac;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.file-actions .file-action:first-child {
  padding-left: 0;
}
.action-feedback {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  max-width: min(90vw, 560px);
  padding: 12px 18px;
  border-radius: 8px;
  background: #22324d;
  color: #fff;
  box-shadow: 0 6px 24px #18243a24;
  overflow-wrap: anywhere;
}
.clipboard-fallback {
  position: fixed;
  left: -9999px;
  top: 0;
}
.empty-message {
  color: var(--muted);
  text-align: center;
  padding: 70px 20px;
}
/* 预览区使用独立的工具栏、信息卡、内容画布与状态栏。内容只在画布内滚动。 */
.preview-panel {
  position: fixed;
  inset: 0 0 0 auto;
  width: var(--preview-width, clamp(380px, 46vw, 820px));
  height: 100dvh;
  min-width: 0;
  z-index: 5;
  box-shadow: -6px 0 24px #2036530a;
  min-height: 0;
  border-left: 1px solid #dfe6f0;
  background: #f5f7fb;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.preview-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: #fff;
}
.preview-heading, .preview-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.preview-heading h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
}
.preview-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #578aef;
}
.preview-header button {
  padding: 7px 10px;
  color: #62708a;
  font-size: 12px;
  border-color: transparent;
  background: #f4f6fa;
}
.preview-header button:hover {
  color: #245fc7;
  background: #e9f0ff;
}
#close-preview {
  background: transparent;
  font-size: 16px;
  padding: 4px 7px;
}
.preview-information {
  flex-shrink: 0;
  max-height: 32%;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 12px 16px 8px;
  border-bottom: 1px solid var(--border);
  background: #fff;
}
.preview-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.preview-file-icon {
  display: grid;
  place-items: center;
  flex: 0 0 34px;
  height: 38px;
  border: 1px solid #dfe7fb;
  border-radius: 10px;
  background: #edf2ff;
  color: #5473b7;
  font: 700 11px Consolas, monospace;
}
.preview-file-icon[data-category="image"] {
  color: #33836e;
  background: #eaf6f0;
  border-color: #d3ece1;
}
.preview-file-icon[data-category="pdf"] {
  color: #bd6464;
  background: #fff0ef;
  border-color: #f5dddb;
}
.preview-file-heading {
  min-width: 0;
  flex: 1;
}
.preview-file-heading h3 {
  font-size: 15px;
  line-height: 1.4;
  font-weight: 600;
  overflow-wrap: anywhere;
}
.preview-file-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-top: 4px;
  color: #8390a5;
  font-size: 11px;
  line-height: 1.7;
}
#preview-metadata {
  margin: 0;
  font-size: inherit;
}
.preview-modified-label {
  white-space: nowrap;
}
#preview-modified {
  color: #77869d;
  font-variant-numeric: tabular-nums;
}
.preview-path-card {
  padding: 10px 12px;
  border: 1px solid #e7ecf4;
  border-radius: 8px;
  background: #f8fafd;
}
.preview-path-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: #8a96a9;
  font-size: 11px;
  margin-bottom: 5px;
}
.preview-path-heading button {
  border: 0;
  padding: 2px 4px;
  color: #4e76bd;
  background: transparent;
  font-size: 11px;
}
#preview-path {
  color: #5b6c86;
  font: 11px/1.75 Consolas, "Microsoft YaHei", monospace;
  overflow-wrap: anywhere;
  user-select: all;
}
.primary-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  background: var(--blue);
  color: white;
  text-decoration: none;
  padding: 9px 16px;
  border-radius: 7px;
  white-space: nowrap;
  font-size: 12px;
}
.primary-button:hover {
  background: #1d57cf;
}
.preview-header .primary-button {
  margin: 0;
  padding: 7px 10px;
  font-size: 12px;
}
/* 详情入口与文件标题同行，详细信息使用原生模态框，不挤占预览高度。 */
.preview-information .preview-title {
  margin-bottom: 0;
}
.details-text-button {
  border: 0;
  background: transparent;
  color: #4e76bd;
  font-size: 12px;
  white-space: nowrap;
  padding: 6px;
}
.file-details-dialog {
  width: min(580px, calc(100vw - 32px));
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 1px solid #e1e7f0;
  border-radius: 12px;
  color: #334763;
  box-shadow: 0 24px 90px #172a4c30;
  overflow: auto;
}
.file-details-dialog::backdrop {
  background: #192a4659;
}
.details-dialog-header {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.details-dialog-header h2 {
  font-size: 16px;
}
.details-dialog-header button {
  border: 0;
  background: transparent;
  color: #8390a5;
}
.details-dialog-body {
  padding: 20px;
}
.details-dialog-body .preview-file-details {
  border: 0;
  padding: 0;
  margin: 0;
  font-size: 12px;
  gap: 12px 20px;
}
.details-dialog-address {
  border-top: 1px solid var(--border);
  margin-top: 18px;
  padding-top: 16px;
}
/* 标签与值分列，长文件名和路径自动换行；信息区仍受高度上限约束。 */
.preview-file-details {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 8px 14px;
  margin: 0 0 12px;
  padding: 12px;
  border: 1px solid #e7ecf4;
  border-radius: 8px;
  font-size: 11px;
  line-height: 1.7;
}
.preview-file-details dt {
  color: #8a96a9;
}
.preview-file-details dd {
  margin: 0;
  color: #5b6c86;
  overflow-wrap: anywhere;
  user-select: text;
}
.preview-content {
  margin: 8px 8px 0;
  flex: 1;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  border: 1px solid #e3e9f2;
  border-radius: 10px;
  background: #fff;
  position: relative;
  box-shadow: 0 2px 6px #273c5c04;
}
.preview-content pre {
  margin: 0;
  padding: 16px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #394c68;
  font: 13px/1.8 Consolas, "Microsoft YaHei", monospace;
  tab-size: 2;
}
/* 媒体与文档独享画布，避免把 PDF 的高度设为整个视口导致双重滚动。 */
.preview-content[data-category="image"], .preview-content[data-category="audio"], .preview-content[data-category="video"] {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #edf1f7;
}
.preview-content img, .preview-content video {
  display: block;
  max-width: 100%;
  max-height: 100%;
  margin: auto;
  object-fit: contain;
  flex-shrink: 0;
}
.preview-content audio {
  width: calc(100% - 40px);
  margin: 24px auto;
}
.preview-content[data-category="pdf"] {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  scrollbar-gutter: auto;
}
.preview-content iframe {
  flex: 1;
  width: 100%;
  min-height: 0;
  border: 0;
  background: white;
}
.preview-message {
  padding: 30px 24px;
  color: #7a879b;
  font-size: 13px;
  line-height: 1.9;
  overflow-wrap: anywhere;
}
.preview-content[data-category="pdf"] > .preview-message {
  flex-shrink: 0;
  padding: 8px 12px;
  font-size: 11px;
  border-top: 1px solid var(--border);
  background: #fff;
}
.preview-message button {
  display: block;
  margin-top: 16px;
  color: #3267bd;
}
.preview-footer {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  padding: 6px 16px;
  color: #94a0b3;
  font-size: 11px;
}
.status-bar {
  min-height: 46px;
  padding: 13px 24px;
  border-top: 1px solid var(--border);
  color: #758198;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
#catalog-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  min-width: 0;
  line-height: 1.7;
}
/* 页面内全屏：面板覆盖页面视口，不进入浏览器原生全屏。 */
body.preview-expanded {
  overflow: hidden;
}
.preview-panel.expanded {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: none;
  min-width: 0;
  z-index: 10;
  height: 100dvh;
  border: 0;
}
.preview-panel.expanded .preview-content {
  min-height: 0;
}
.preview-panel.expanded .preview-information {
  max-height: 34%;
}
/* 右侧预览从页面顶部延伸到底部，不再受页头、底栏高度约束。
   桌面预留对应宽度，避免浮层挡住列表；窄屏沿用覆盖式预览。 */
body.preview-open {
  --preview-width: clamp(380px, 46vw, 820px);
}
body.preview-open .workspace, body.preview-open .page-header, body.preview-open .status-bar {
  margin-right: var(--preview-width);
}
/* 预览打开时减少列表列项，为名称和常用操作留出空间；关闭后自动恢复。 */
body.preview-open .file-panel th:nth-child(2), body.preview-open .file-panel td:nth-child(2), body.preview-open .file-panel th:nth-child(4), body.preview-open .file-panel td:nth-child(4) {
  display: none;
}
@media (max-width: 1100px) {
  .directory-sidebar {
    width: 200px;
  }
  body.preview-open {
    --preview-width: min(680px, 70vw);
  }
  body.preview-open .workspace, body.preview-open .page-header, body.preview-open .status-bar {
    margin-right: 0;
  }
}
/* 自定义宽度优先于断点中的默认宽度，限制由拖动逻辑按可用空间计算。 */
body.directory-width-custom .directory-sidebar {
  width: var(--directory-width);
}
.mobile-directory-button {
  display: none;
}
.mobile-directory-dialog {
  position: fixed;
  inset: 0 auto 0 0;
  margin: 0;
  padding: 0;
  width: min(320px, 88vw);
  max-width: none;
  height: 100dvh;
  max-height: none;
  border: 0;
  background: #fff;
  color: inherit;
}
.mobile-directory-dialog::backdrop {
  background: #192a4666;
}
.mobile-directory-content {
  height: calc(100% - 72px);
}
body .mobile-directory-content .directory-sidebar {
  width: 100%;
  height: 100%;
  border: 0;
}
/* 手机采用独立目录抽屉与两行文件条目，防止表格挤出水平滚动。 */
@media (max-width: 650px) {
  body.preview-open {
    --preview-width: 100vw;
  }
  .mobile-directory-dialog {
    inset: 0;
    width: 100vw;
    height: 100dvh;
  }
  .mobile-directory-dialog .details-dialog-header {
    padding-top: max(12px, env(safe-area-inset-top));
  }
  .mobile-directory-dialog[open] {
    display: flex;
    flex-direction: column;
  }
  .mobile-directory-dialog .details-dialog-header {
    flex-shrink: 0;
  }
  .mobile-directory-content {
    flex: 1;
    min-height: 0;
    height: auto;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .page-header {
    padding: max(10px, env(safe-area-inset-top)) 14px 10px;
    gap: 10px;
  }
  .scan-time {
    display: none;
  }
  .section-heading h2 {
    font-size: 22px;
  }
  .status-bar {
    flex-direction: column;
  }
  .brand {
    gap: 10px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
  }
  .brand h1 {
    font-size: 19px;
  }
  .brand p {
    font-size: 11px;
  }
  .mobile-directory-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 56px;
    min-height: 44px;
  }
  .directory-resizer {
    display: none;
  }
  .directory-sidebar h2 {
    display: none;
  }
  .tree-row {
    min-height: 44px;
  }
  .tree-toggle {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
  }
  .tree-name {
    min-height: 44px;
  }
  .file-panel {
    padding: 14px 12px;
  }
  .breadcrumbs {
    flex-wrap: nowrap;
    overflow-x: auto;
    white-space: nowrap;
    margin-bottom: 14px;
  }
  .breadcrumbs button {
    flex-shrink: 0;
    min-height: 36px;
  }
  .section-heading {
    margin-bottom: 14px;
  }
  #parent-directory {
    min-height: 40px;
    font-size: 12px;
  }
  .toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 116px;
    gap: 8px;
    margin-bottom: 12px;
  }
  .search-field {
    padding: 0 10px;
  }
  .search-field input, select {
    font-size: 16px;
  }
  select {
    padding: 10px 26px 10px 8px;
  }
  .type-filter-field::after {
    right: 12px;
  }
  .table-scroll {
    overflow: visible;
  }
  .file-table, .file-table thead, .file-table tbody {
    display: block;
    width: 100%;
  }
  .file-table thead tr {
    display: flex;
    justify-content: space-between;
    padding: 0 8px;
  }
  .file-table th {
    display: block;
    padding: 8px 0;
  }
  .file-table th:nth-child(2), .file-table th:nth-child(4), .file-table th:nth-child(5), .file-table td:nth-child(2), .file-table td:nth-child(4) {
    display: none;
  }
  .file-table tbody tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 8px;
    /* 移动端保持两行布局和操作触控高度，仅收紧顶部留白。 */
    padding: 8px 8px 2px;
    border-bottom: 1px solid var(--border);
    border-radius: 6px;
  }
  .file-table td {
    display: block;
    padding: 0;
    border: 0;
    min-width: 0;
  }
  .file-table td:first-child {
    grid-column: 1;
  }
  .file-table td:nth-child(3) {
    grid-column: 2;
    font-size: 11px;
  }
  .file-table td:nth-child(5) {
    grid-column: 1 / -1;
  }
  .file-name-row {
    min-width: 0;
  }
  .file-name {
    max-width: calc(100% - 34px);
  }
  .file-label, body.preview-open .file-label {
    max-width: 100%;
    width: auto;
  }
  .copy-name-button {
    width: 32px;
    height: 40px;
    flex-basis: 32px;
  }
  .copy-name-button::before {
    top: 12px;
  }
  .copy-name-button::after {
    top: 16px;
  }
  .file-actions {
    justify-content: flex-end;
    gap: 12px;
  }
  .file-action {
    min-height: 42px;
    padding: 8px 6px;
  }
  .search-path {
    max-width: 100%;
  }
  .status-bar {
    padding: 8px 14px max(8px, env(safe-area-inset-bottom));
    font-size: 11px;
    gap: 2px;
  }
  .preview-header {
    padding: max(8px, env(safe-area-inset-top)) 12px 8px;
  }
  .preview-header-actions {
    gap: 5px;
  }
  .preview-header button, .preview-header .primary-button {
    min-height: 40px;
  }
  #close-preview {
    min-width: 40px;
  }
  #fullscreen {
    display: none;
  }
  .preview-information {
    padding: 10px 12px;
  }
  .preview-title {
    gap: 8px;
    flex-wrap: wrap;
  }
  .preview-file-heading {
    flex-basis: calc(100% - 54px);
  }
  .details-text-button {
    min-height: 36px;
  }
  .preview-content {
    margin: 4px 6px 0;
    scrollbar-gutter: auto;
  }
  .preview-content pre {
    font-size: 13px;
    padding: 12px;
  }
  .preview-footer {
    padding-bottom: max(6px, env(safe-area-inset-bottom));
  }
  .file-details-dialog {
    max-height: calc(100dvh - 32px);
    width: calc(100vw - 24px);
  }
  .details-dialog-header {
    padding: 12px 16px;
  }
  .details-dialog-header button {
    min-width: 40px;
    min-height: 40px;
  }
  .details-dialog-body {
    padding: 16px;
  }
  .details-dialog-body .preview-file-details {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 10px;
  }
  .preview-path-heading button {
    min-height: 40px;
  }
}
.load-more-files {
  display: block;
  margin: 20px auto;
  color: var(--blue);
}
.tree-more {
  border: 0;
  background: transparent;
  color: var(--blue);
  font-size: 12px;
  margin: 4px 0 4px 24px;
}