.itk-file-explorer {
  box-sizing: border-box;
  color: #111827;
  font-family: "Segoe UI", "Yu Gothic UI", sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  height: 100%;
  border: 1px solid #d7dce2;
  border-radius: 10px;
  background: #ffffff;
  overflow: hidden;
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.08);
}

.itk-fe-toolbar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px;
  background: #f8fafc;
  border-bottom: 1px solid #d7dce2;
}

.itk-fe-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.itk-fe-left,
.itk-fe-center,
.itk-fe-right {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.itk-fe-center {
  flex: 1 1 auto;
}

.itk-fe-btn {
  height: 32px;
  min-width: 34px;
  padding: 0 10px;
  cursor: pointer;
}

.itk-fe-icon-btn {
  width: 34px;
  padding: 0;
  text-align: center;
}

.itk-fe-fa {
  display: none;
  width: 1em;
  text-align: center;
  pointer-events: none;
}

.itk-fe-fontawesome-loaded .itk-fe-fa {
  display: inline-block;
}

.itk-fe-fontawesome-loaded .itk-fe-icon-fallback {
  display: none;
}

.itk-fe-icon-fallback {
  display: inline-block;
  min-width: 1em;
  text-align: center;
  pointer-events: none;
}

.itk-fe-select {
  height: 32px;
  min-width: 112px;
  padding: 0 8px;
}

.itk-fe-search {
  height: 32px;
  flex: 1 1 auto;
  min-width: 160px;
  padding: 0 10px;
}

.itk-fe-breadcrumb {
  height: 32px;
  flex: 1 1 auto;
  min-width: 150px;
  padding: 0 10px;
  border: 1px solid #cfd6df;
  border-radius: 8px;
  background: #fff;
  display: flex;
  align-items: center;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: #334155;
  font-size: 13px;
}

.itk-fe-content {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
}

.itk-fe-tree-pane,
.itk-fe-preview-pane {
  position: relative;
  flex: 0 0 auto;
  background: #f8fafc;
  overflow: auto;
}

.itk-fe-tree-pane {
  width: 245px;
  border-right: 1px solid #d7dce2;
}

.itk-fe-preview-pane {
  width: 330px;
  border-left: 1px solid #d7dce2;
}

.itk-fe-preview-pane.is-hidden {
  display: none;
}

.itk-fe-main-pane {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}

.itk-fe-title {
  padding: 10px 12px;
  font-weight: 600;
  color: #334155;
  border-bottom: 1px solid #e5e7eb;
}

.itk-fe-tree {
  padding: 8px;
}

.itk-fe-tree-node {
  display: flex;
  gap: 6px;
  padding: 7px 8px;
  border-radius: 8px;
  cursor: pointer;
  color: #334155;
}

.itk-fe-tree-node:hover,
.itk-fe-tree-node.is-active {
  background: #e0f2fe;
  color: #075985;
}

.itk-fe-file-area {
  height: 100%;
  overflow: auto;
}

.itk-fe-empty {
  padding: 28px;
  color: #64748b;
}

.itk-fe-detail-table {
  width: auto;
  min-width: 0;
  border-collapse: collapse;
  table-layout: fixed;
}

.itk-fe-detail-table th,
.itk-fe-detail-table td {
  border-bottom: 1px solid #e5e7eb;
  padding: 8px 10px;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.itk-fe-detail-table th {
  position: relative;
  background: #f8fafc;
  color: #475569;
  font-weight: 600;
  text-align: left;
}

.itk-fe-entry {
  cursor: default;
}

.itk-fe-entry:hover,
.itk-fe-entry.is-selected {
  background: #eff6ff;
}

.itk-fe-col-resizer {
  position: absolute;
  top: 0;
  right: -3px;
  width: 6px;
  height: 100%;
  cursor: col-resize;
}

.itk-fe-list-view {
  padding: 8px;
}

.itk-fe-list-row {
  display: flex;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 8px;
}

.itk-fe-icon-view {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 10px;
  padding: 12px;
}

.itk-fe-icon-tile {
  width: 112px;
  height: 96px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: center;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 10px;
  text-align: center;
}

.itk-fe-icon {
  font-size: 22px;
}

.itk-fe-name {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.itk-fe-inline-input {
  width: 160px;
  height: 26px;
  border: 1px solid #2563eb;
  border-radius: 5px;
  padding: 0 6px;
}

.itk-fe-preview-body,
.itk-fe-meta-body {
  padding: 12px;
}

.itk-fe-preview-empty {
  color: #64748b;
  border: 1px dashed #cbd5e1;
  border-radius: 8px;
  padding: 12px;
}

.itk-fe-preview-text {
  white-space: pre-wrap;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
}

.itk-fe-preview-image {
  max-width: 100%;
  border-radius: 8px;
}

.itk-fe-statusbar {
  min-height: 30px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #d7dce2;
  background: #f8fafc;
  color: #64748b;
  font-size: 12px;
}

.itk-fe-resize-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 12px;
  cursor: col-resize;
  z-index: 5;
}

.itk-fe-resize-handle::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 4px;
  height: 56px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.24);
  transform: translateY(-50%);
}

.itk-fe-tree-pane .itk-fe-resize-handle {
  right: -6px;
}

.itk-fe-tree-pane .itk-fe-resize-handle::after {
  left: 4px;
}

.itk-fe-preview-pane .itk-fe-resize-handle {
  left: -6px;
}

.itk-fe-preview-pane .itk-fe-resize-handle::after {
  right: 4px;
}

.itk-dialog-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
}

.itk-dialog-row label {
  flex: 0 0 90px;
}

.itk-fe-bc-btn {
  border: 0;
  background: transparent;
  color: #2563eb;
  cursor: pointer;
  padding: 2px 3px;
  border-radius: 4px;
  font-size: 13px;
}

.itk-fe-bc-btn:hover {
  background: #e0f2fe;
}

.itk-fe-bc-sep {
  color: #94a3b8;
  padding: 0 2px;
}

.itk-fe-tree-indent,
.itk-fe-tree-toggle,
.itk-fe-tree-icon,
.itk-fe-tree-label {
  flex: 0 0 auto;
}

.itk-fe-tree-toggle {
  width: 16px;
  text-align: center;
  color: #64748b;
}

.itk-fe-tree-label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.itk-fe-tree-node.is-drop-hover,
.itk-fe-entry.is-drop-hover,
.itk-fe-file-area.is-drop-hover-area {
  outline: 2px solid #0ea5e9;
  outline-offset: -2px;
  background: #e0f2fe;
}

.itk-fe-sortable-th {
  cursor: pointer;
  user-select: none;
}

.itk-fe-list-row {
  align-items: center;
}

.itk-fe-list-row .itk-fe-name {
  flex: 1 1 auto;
  min-width: 0;
}

.itk-fe-list-meta {
  flex: 0 0 auto;
  color: #64748b;
  font-size: 12px;
}

.itk-fe-icon-tile .itk-fe-name {
  width: 100%;
  font-size: 12px;
  line-height: 1.3;
}

.itk-fe-drag-helper {
  opacity: 0.82;
  border: 1px solid #93c5fd;
  background: #eff6ff;
  border-radius: 8px;
  padding: 8px 10px;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
}

.itk-fe-context-menu {
  position: absolute;
  z-index: 20000;
  display: none;
  min-width: 190px;
  padding: 6px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}

.itk-fe-context-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  border: 0;
  background: transparent;
  color: #111827;
  text-align: left;
  padding: 7px 9px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
}

.itk-fe-context-item .itk-fe-fa,
.itk-fe-context-item .itk-fe-icon-fallback {
  flex: 0 0 16px;
}

.itk-fe-context-label {
  flex: 1 1 auto;
}

.itk-fe-context-item:hover:not(:disabled) {
  background: #eff6ff;
}

.itk-fe-context-item:disabled {
  color: #94a3b8;
  cursor: default;
}

.itk-fe-context-sep {
  height: 1px;
  margin: 5px 2px;
  background: #e5e7eb;
}

.itk-fe-properties div,
.itk-fe-meta-body div {
  margin: 4px 0;
  word-break: break-all;
}

@media (max-width: 920px) {
  .itk-fe-tree-pane {
    width: 190px;
  }

  .itk-fe-preview-pane {
    display: none;
  }

  .itk-fe-row {
    flex-wrap: wrap;
  }
}

.itk-picker-dialog,
.itk-saver-dialog {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  gap: 8px;
}

.itk-dialog-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.itk-dialog-toolbar select,
.itk-dialog-toolbar button,
.itk-dialog-row input,
.itk-dialog-row select {
  border: 1px solid #cbd5e1;
  border-radius: 7px;
  padding: 6px 8px;
  background: #fff;
}

.itk-picker-path,
.itk-saver-path {
  flex: 1 1 auto;
  color: #475569;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}


.itk-dialog-browser {
  display: grid;
  grid-template-columns: var(--itk-dialog-tree-width, 220px) minmax(0, 1fr);
  gap: 8px;
  flex: 1 1 auto;
  min-height: 0;
}

.itk-dialog-browser.itk-dialog-no-tree {
  display: flex;
}

.itk-dialog-browser.itk-dialog-no-tree .itk-dialog-tree-pane {
  display: none;
}

.itk-dialog-browser.itk-dialog-no-tree .itk-picker-list,
.itk-dialog-browser.itk-dialog-no-tree .itk-saver-list {
  flex: 1 1 auto;
}

.itk-dialog-tree-pane {
  display: flex;
  flex-direction: column;
  min-width: 160px;
  min-height: 0;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #fff;
}

.itk-dialog-tree-title {
  flex: 0 0 auto;
  padding: 8px 10px;
  color: #475569;
  font-size: 12px;
  font-weight: 600;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
}

.itk-dialog-tree {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 4px 0;
}

.itk-dialog-tree-empty {
  padding: 10px;
  color: #94a3b8;
  font-size: 12px;
}

.itk-dialog-tree-node {
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 28px;
  padding: 4px 8px;
  cursor: default;
  color: #334155;
  font-size: 13px;
  white-space: nowrap;
}

.itk-dialog-tree-node:hover,
.itk-dialog-tree-node.is-active {
  background: #eff6ff;
}

.itk-dialog-tree-node.is-root {
  font-weight: 600;
}

.itk-dialog-tree-indent {
  flex: 0 0 auto;
  height: 1px;
}

.itk-dialog-tree-toggle {
  flex: 0 0 16px;
  width: 16px;
  color: #64748b;
  text-align: center;
  cursor: pointer;
}

.itk-dialog-tree-icon {
  flex: 0 0 auto;
  width: 18px;
  text-align: center;
}

.itk-dialog-tree-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 720px) {
  .itk-dialog-browser {
    grid-template-columns: 1fr;
  }

  .itk-dialog-tree-pane {
    max-height: 180px;
  }
}

.itk-picker-list,
.itk-saver-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #fff;
}

.itk-picker-entry,
.itk-saver-entry {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  cursor: default;
  border-bottom: 1px solid #f1f5f9;
}

.itk-picker-entry:hover,
.itk-saver-entry:hover,
.itk-picker-entry.is-selected {
  background: #eff6ff;
}

.itk-picker-entry.is-disabled {
  color: #94a3b8;
}

.itk-picker-entry span:nth-child(2),
.itk-saver-entry span:nth-child(2) {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.itk-picker-meta,
.itk-picker-selection {
  color: #64748b;
  font-size: 12px;
}


.itk-file-explorer *,
.itk-file-explorer *::before,
.itk-file-explorer *::after,
.itk-picker-dialog *,
.itk-picker-dialog *::before,
.itk-picker-dialog *::after,
.itk-saver-dialog *,
.itk-saver-dialog *::before,
.itk-saver-dialog *::after,
.itk-fe-context-menu *,
.itk-fe-context-menu *::before,
.itk-fe-context-menu *::after {
  box-sizing: border-box;
}

.itk-picker-dialog,
.itk-saver-dialog,
.itk-fe-context-menu {
  color: #111827;
  font-family: "Segoe UI", "Yu Gothic UI", sans-serif;
}

.itk-file-explorer.itk-fe-no-tree .itk-fe-main {
  grid-template-columns: 1fr var(--itk-fe-preview-width, 280px);
}

.itk-file-explorer.itk-fe-no-tree .itk-fe-tree-pane {
  display: none;
}

.itk-file-explorer button:disabled,
.itk-fe-context-menu li.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.itk-fe-file-area.is-native-drop-hover {
  outline: 2px dashed #94a3b8;
  outline-offset: -8px;
  background: #f8fafc;
}

/* dialog integration helpers */
.itk-dialog-help {
  padding: 6px 8px;
  color: #64748b;
  font-size: 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.itk-dialog-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 24px;
  color: #64748b;
  font-size: 12px;
}

.itk-dialog-message {
  margin-left: auto;
  text-align: right;
}

.itk-dialog-warning {
  color: #b45309;
}

.itk-picker-entry.is-folder,
.itk-saver-entry.is-folder {
  font-weight: 600;
}

.itk-saver-entry:not(.is-folder) {
  cursor: pointer;
}

.itk-dialog-row label {
  min-width: 86px;
  color: #475569;
  font-size: 13px;
}

.itk-dialog-row input[data-role="fileName"],
.itk-dialog-row select[data-role="type"] {
  flex: 1 1 auto;
}



/* v1.9.4-fix1 dialog main-area priority layout */
.itk-picker-dialog.itk-dialog-maximize-main,
.itk-saver-dialog.itk-dialog-maximize-main {
  --itk-dialog-tree-width: 190px;
  --itk-dialog-tree-min-width: 150px;
  --itk-dialog-main-min-height: 380px;
}

.itk-picker-dialog.itk-dialog-compact,
.itk-saver-dialog.itk-dialog-compact {
  gap: 6px;
}

.itk-dialog-compact .itk-dialog-row {
  flex: 0 0 auto;
  gap: 7px;
  margin: 3px 0;
}

.itk-dialog-compact .itk-dialog-toolbar {
  min-height: 34px;
}

.itk-dialog-compact .itk-dialog-toolbar select,
.itk-dialog-compact .itk-dialog-toolbar button,
.itk-dialog-compact .itk-dialog-row input,
.itk-dialog-compact .itk-dialog-row select {
  min-height: 32px;
  padding: 5px 8px;
}

.itk-dialog-compact .itk-dialog-help {
  flex: 0 0 auto;
  min-height: 24px;
  padding: 4px 8px;
  line-height: 1.25;
}

.itk-dialog-maximize-main .itk-dialog-browser {
  flex: 1 1 auto;
  min-height: var(--itk-dialog-main-min-height, 380px);
  grid-template-columns: var(--itk-dialog-tree-width, 190px) minmax(0, 1fr);
}

.itk-dialog-maximize-main .itk-dialog-tree-pane {
  min-width: var(--itk-dialog-tree-min-width, 150px);
}

.itk-dialog-compact .itk-dialog-tree-title {
  padding: 6px 9px;
}

.itk-dialog-compact .itk-dialog-tree-node {
  min-height: 25px;
  padding: 3px 7px;
}

.itk-dialog-compact .itk-picker-entry,
.itk-dialog-compact .itk-saver-entry {
  min-height: 38px;
  padding: 7px 10px;
}

.itk-dialog-compact-footer .itk-dialog-footer {
  flex: 0 0 auto;
  min-height: 18px;
}

.itk-dialog-compact .itk-dialog-row label {
  flex: 0 0 78px;
  min-width: 78px;
}

/* v1.3 sidecar services: recent/favorite shortcuts, metadata badges, and thumbnails */
.itk-fe-quick-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 8px;
  border-bottom: 1px solid #e2e8f0;
}

.itk-fe-quick-btn {
  width: 100%;
  padding: 7px 8px;
  border: 1px solid #dbe3ef;
  border-radius: 8px;
  color: #334155;
  background: #f8fafc;
  text-align: left;
  cursor: pointer;
}

.itk-fe-quick-btn:hover {
  background: #eef2f7;
}

.itk-fe-fav-mark {
  display: inline-block;
  margin-right: 4px;
  color: #92400e;
  font-size: 13px;
  line-height: 1;
  vertical-align: middle;
}

.itk-fe-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 3px;
  margin-left: 8px;
  vertical-align: middle;
}

.itk-fe-tag {
  display: inline-block;
  max-width: 96px;
  padding: 1px 6px;
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  color: #475569;
  background: #f8fafc;
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.itk-fe-tile-icon-wrap {
  position: relative;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.itk-fe-tile-icon-wrap .itk-fe-fav-mark {
  position: absolute;
  top: 0;
  right: 4px;
  margin-right: 0;
}

.itk-fe-thumb {
  max-width: 64px;
  max-height: 52px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  object-fit: contain;
  background: #fff;
}

.itk-fe-meta-action {
  margin: 10px 0;
}

.itk-fe-meta-form {
  display: grid;
  gap: 10px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #e2e8f0;
}

.itk-fe-meta-form label {
  display: grid;
  gap: 4px;
  color: #475569;
  font-size: 12px;
}

.itk-fe-meta-form textarea,
.itk-fe-meta-form input {
  width: 100%;
  min-height: 32px;
  padding: 6px 8px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font: inherit;
}

.itk-fe-meta-form textarea {
  min-height: 82px;
  resize: vertical;
}

/* v1.4 browser-local file system mount and progress feedback */
.itk-fe-progress {
    display: none;
    position: relative;
    flex: 0 0 160px;
    height: 6px;
    border: 1px solid #d6dbe2;
    border-radius: 999px;
    background: #f5f7fa;
    overflow: hidden;
}

.itk-fe-progress.is-active {
    display: inline-block;
}

.itk-fe-progress > span {
    display: block;
    width: 0;
    height: 100%;
    background: #5f6f89;
    transition: width 0.16s ease;
}

.itk-fe-mount-hint {
    margin: 48px auto;
    max-width: 420px;
    padding: 28px;
    text-align: center;
    border: 1px dashed #cbd3df;
    border-radius: 12px;
    background: #fbfcfe;
}

.itk-fe-mount-icon {
    font-size: 42px;
    line-height: 1.1;
    margin-bottom: 10px;
}

.itk-fe-mount-title {
    font-weight: 600;
    margin-bottom: 6px;
}

.itk-fe-mount-text {
    color: #5b6472;
    line-height: 1.55;
    margin-bottom: 16px;
}

/* v1.6 ZIP/native package inspection */
.itk-fe-package-preview {
    display: block;
    font-size: 12px;
    color: #253044;
}

.itk-fe-package-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.itk-fe-package-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.itk-fe-package-summary span {
    display: inline-block;
    padding: 4px 8px;
    border: 1px solid #d8e0eb;
    border-radius: 999px;
    background: #f8fafc;
}

.itk-fe-package-manifest {
    margin-bottom: 12px;
    padding: 10px;
    border: 1px solid #dbe3ee;
    border-radius: 8px;
    background: #ffffff;
    line-height: 1.6;
}

.itk-fe-package-manifest.is-empty {
    color: #64748b;
    background: #f8fafc;
}

.itk-fe-package-manifest pre {
    max-height: 160px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
    margin: 8px 0 0;
    font-size: 11px;
}

.itk-fe-package-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
}

.itk-fe-package-table th,
.itk-fe-package-table td {
    padding: 6px 8px;
    border-bottom: 1px solid #e6ebf2;
    text-align: left;
    vertical-align: top;
}

.itk-fe-package-table th {
    color: #475569;
    background: #f8fafc;
    font-weight: 600;
}

.itk-fe-package-more {
    margin-top: 8px;
    color: #64748b;
}

.itk-fe-package-dialog .itk-fe-package-preview {
    max-height: 100%;
    overflow: auto;
}

/* v1.8.2: Windows 11 inspired flat theme and toolbar New menu */
.itk-file-explorer.itk-fe-theme-windows11 {
    --itk-fe-bg: #ffffff;
    --itk-fe-panel-bg: #f7f9fc;
    --itk-fe-border: #e2e6ed;
    --itk-fe-command-bg: #f8fafc;
    --itk-fe-command-hover: #edf3fb;
    --itk-fe-selected: #eaf4ff;
    background: var(--itk-fe-bg);
    border-color: #d8dee8;
    border-radius: 8px;
    box-shadow: none;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-toolbar {
    background: #f6f8fb;
    border-bottom: 1px solid var(--itk-fe-border);
    padding: 8px 10px 5px;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-row {
    gap: 10px;
    min-height: 40px;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-btn,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-select,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-search,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-breadcrumb {
    border: 1px solid transparent;
    border-radius: 6px;
    background: var(--itk-fe-command-bg);
    box-shadow: none;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-btn:hover,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-select:hover {
    border-color: #d3d9e3;
    background: var(--itk-fe-command-hover);
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-icon-btn {
    width: 36px;
    height: 34px;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-tree-pane,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-preview-pane {
    background: var(--itk-fe-panel-bg);
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-title {
    background: transparent;
    border-bottom: 1px solid var(--itk-fe-border);
    font-weight: 600;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-quick-btn,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-tree-row {
    border-radius: 8px;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-entry.is-selected,
.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-tree-row.is-selected {
    background: var(--itk-fe-selected);
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-detail-table th {
    background: #ffffff;
    border-bottom: 1px solid var(--itk-fe-border);
    font-weight: 500;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-detail-table td {
    border-bottom: 1px solid #eef2f6;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-detail-table tr:hover td {
    background: #f2f7ff;
}

.itk-fe-new-menu-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.itk-fe-new-menu-button {
    min-width: 112px;
    padding: 0 12px;
    gap: 7px;
}

.itk-fe-btn-label,
.itk-fe-menu-chevron,
.itk-fe-new-menu-label {
    display: inline-block;
    vertical-align: middle;
}

.itk-fe-menu-chevron {
    margin-left: 4px;
    color: #506070;
    font-size: 12px;
}

.itk-fe-new-menu {
    position: absolute;
    left: 0;
    top: calc(100% + 4px);
    z-index: 3000;
    min-width: 190px;
    padding: 6px;
    display: none;
    background: #ffffff;
    border: 1px solid #d8dee8;
    border-radius: 8px;
    box-shadow: 0 10px 28px rgba(31, 41, 55, 0.18);
}

.itk-fe-new-menu.is-open {
    display: block;
}

.itk-fe-new-menu-item {
    display: flex;
    align-items: center;
    width: 100%;
    height: 34px;
    gap: 9px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: #17233c;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
}

.itk-fe-new-menu-item:hover {
    background: #edf3fb;
}

.itk-fe-column-resizing,
.itk-fe-column-resizing * {
    cursor: col-resize !important;
    user-select: none !important;
}

/* v1.8.3 - Inline rename */
.itk-fe-entry.is-inline-renaming {
    background: #eff6ff;
}

.itk-fe-entry .itk-fe-name {
    cursor: text;
}

.itk-fe-detail-table .itk-fe-inline-input {
    width: calc(100% - 8px);
    max-width: 360px;
}

.itk-fe-list-row .itk-fe-inline-input {
    flex: 1 1 auto;
    min-width: 120px;
}

.itk-fe-icon-tile .itk-fe-inline-input {
    width: 96px;
    text-align: center;
}

.itk-fe-inline-input.is-busy {
    opacity: 0.7;
}

/* v1.8.4 - Explorer interaction enhancement */
.itk-fe-entry.is-selected {
  outline: 1px solid rgba(37, 99, 235, 0.28);
  outline-offset: -1px;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-entry.is-selected {
  outline-color: rgba(0, 95, 184, 0.32);
}

.itk-fe-drag-helper {
  position: relative;
}

.itk-fe-drag-count {
  position: absolute;
  right: -8px;
  top: -8px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  background: #2563eb;
  color: #ffffff;
  font-size: 12px;
  line-height: 20px;
  text-align: center;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.22);
}

.itk-fe-file-area:focus {
  outline: none;
}

.itk-file-explorer:focus {
  outline: 1px solid rgba(37, 99, 235, 0.28);
  outline-offset: -1px;
}


/* v1.8.5 - File type icon colors and inline rename polish */
.itk-fe-entry .itk-fe-icon .itk-fe-fa-folder,
.itk-fe-picker-entry .itk-fe-icon .itk-fe-fa-folder,
.itk-fe-saver-entry .itk-fe-icon .itk-fe-fa-folder {
  color: #f5b92e;
}

.itk-fe-entry .itk-fe-icon .itk-fe-fa-text,
.itk-fe-entry .itk-fe-icon .itk-fe-fa-file {
  color: #64748b;
}

.itk-fe-entry .itk-fe-icon .itk-fe-fa-image {
  color: #2563eb;
}

.itk-fe-entry .itk-fe-icon .itk-fe-fa-pdf {
  color: #dc2626;
}

.itk-fe-entry .itk-fe-icon .itk-fe-fa-archive {
  color: #a855f7;
}

.itk-fe-inline-input {
  box-sizing: border-box;
  font: inherit;
  color: #111827;
  background: #ffffff;
  outline: 2px solid rgba(37, 99, 235, 0.15);
  outline-offset: 0;
}

.itk-fe-list-row.is-inline-renaming,
.itk-fe-detail-table tr.is-inline-renaming td,
.itk-fe-icon-tile.is-inline-renaming {
  background: #eff6ff;
}

.itk-file-explorer.itk-fe-theme-windows11 .itk-fe-entry .itk-fe-icon .itk-fe-fa-folder {
  color: #f7c242;
}

/* v1.9 preview enhancements */
.itk-fe-preview-json {
    tab-size: 2;
}
.itk-fe-preview-markdown {
    padding: 12px;
    line-height: 1.55;
    color: #1f2937;
}
.itk-fe-preview-markdown h1,
.itk-fe-preview-markdown h2,
.itk-fe-preview-markdown h3 {
    margin: 0 0 8px 0;
    font-weight: 600;
}
.itk-fe-preview-markdown p {
    margin: 0 0 8px 0;
}
.itk-fe-preview-markdown ul {
    margin: 0 0 8px 20px;
    padding: 0;
}
.itk-fe-preview-warning {
    margin: 8px;
    padding: 8px 10px;
    border: 1px solid #f4bf75;
    background: #fff8e6;
    color: #8a5a00;
    border-radius: 4px;
}
.itk-fe-preview-image-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 160px;
    padding: 8px;
}
.itk-fe-preview-pdf,
.itk-fe-preview-html {
    width: 100%;
    height: 460px;
    min-height: 260px;
    border: 0;
    background: #fff;
}

/* v1.9.3-fix2 - Windows-like inline rename polish */
.itk-fe-inline-measure {
  display: inline-block;
}

.itk-fe-entry.is-inline-renaming {
  cursor: text;
}

.itk-fe-detail-table td[data-col="name"] {
  vertical-align: middle;
}

.itk-fe-detail-table .itk-fe-inline-input,
.itk-fe-list-row .itk-fe-inline-input,
.itk-fe-icon-tile .itk-fe-inline-input {
  box-sizing: border-box;
  display: inline-block;
  height: 24px;
  min-width: 96px;
  max-width: 100%;
  margin: -2px 0;
  padding: 1px 4px;
  border: 1px solid #111827;
  border-radius: 0;
  outline: 1px solid #ffffff;
  outline-offset: -2px;
  background: #ffffff;
  color: #111827;
  font: inherit;
  line-height: 20px;
  vertical-align: middle;
}

.itk-fe-icon-tile .itk-fe-inline-input {
  width: calc(100% - 12px);
  text-align: center;
}

.itk-fe-entry.is-inline-renaming .itk-fe-icon,
.itk-fe-entry.is-inline-renaming .itk-fe-fav-mark {
  vertical-align: middle;
}

/* v1.9.4-fix3: keep splitter drag behavior predictable in flex panes. */
.itk-file-explorer.is-pane-resizing,
body.itk-fe-resizing {
  cursor: col-resize;
  user-select: none;
}

.itk-file-explorer.is-pane-resizing iframe,
.itk-file-explorer.is-pane-resizing img {
  pointer-events: none;
}

.itk-fe-tree-pane.is-resizing,
.itk-fe-preview-pane.is-resizing {
  transition: none;
}

/* v1.9.5 - command-driven context menu and toolbar state. */
.itk-fe-context-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.itk-fe-context-label {
  flex: 1 1 auto;
  text-align: left;
}

.itk-fe-context-shortcut {
  flex: 0 0 auto;
  color: #64748b;
  font-size: 12px;
  padding-left: 16px;
}

.itk-fe-btn.is-command-checked {
  background: #e0f2fe;
  color: #075985;
}

.itk-fe-btn.is-command-hidden {
  display: none;
}

/* v1.9.7 Google Drive practical UI enhancements */
.itk-fe-progress-panel {
    position: absolute;
    right: 18px;
    bottom: 34px;
    z-index: 40;
    display: none;
    width: 320px;
    max-width: calc(100% - 36px);
    pointer-events: none;
}

.itk-file-explorer .itk-fe-progress-panel.is-active {
    display: block;
}

.itk-fe-progress-card {
    padding: 12px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
    color: #1f2937;
}

.itk-fe-progress-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 600;
}

.itk-fe-progress-card-detail {
    min-height: 18px;
    margin-bottom: 8px;
    color: #64748b;
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.itk-fe-progress-card-bar {
    height: 6px;
    border-radius: 999px;
    overflow: hidden;
    background: #e2e8f0;
}

.itk-fe-progress-card-bar > span {
    display: block;
    height: 100%;
    background: #64748b;
    transition: width 0.16s ease;
}

.itk-fe-progress-card.is-error {
    border-color: #fecaca;
    background: #fff7f7;
}

.itk-fe-progress-card.is-finished {
    border-color: #bbf7d0;
    background: #f7fff9;
}

.itk-fe-conflict-dialog p,
.itk-fe-export-dialog p {
    margin-top: 0;
    line-height: 1.6;
}

.itk-fe-export-dialog select {
    width: 100%;
}

/* v1.9.8: Picker preview / workflow layout extensions */
.itk-picker-list-panel {
    min-width: 0;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
}

.itk-picker-preview-pane {
    width: var(--itk-picker-preview-width, 300px);
    min-width: 220px;
    max-width: 420px;
    border-left: 1px solid #e5e7eb;
    background: #fafafa;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.itk-picker-preview-title {
    flex: 0 0 auto;
    padding: 7px 10px;
    font-weight: 600;
    border-bottom: 1px solid #e5e7eb;
    background: #f3f4f6;
}

.itk-picker-preview-body {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    padding: 8px;
}

.itk-dialog-toolbar [data-act="recent"],
.itk-dialog-toolbar [data-act="favorites"] {
    margin-left: 4px;
}

.itk-saver-dialog[data-workflow="export"] .ui-dialog-title,
.itk-saver-dialog[data-workflow="packageSave"] .ui-dialog-title {
    font-weight: 600;
}

.itk-dialog-browser.itk-dialog-has-preview {
    grid-template-columns: var(--itk-dialog-tree-width, 220px) minmax(0, 1fr) var(--itk-picker-preview-width, 300px);
}

.itk-dialog-browser.itk-dialog-no-tree.itk-dialog-has-preview {
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--itk-picker-preview-width, 300px);
}

.itk-dialog-browser.itk-dialog-no-tree.itk-dialog-has-preview .itk-dialog-tree-pane {
    display: none;
}

/* v1.9.8-fix2: dialog-internal scrolling and picker preview target */
.ui-dialog-content.itk-picker-dialog,
.ui-dialog-content.itk-saver-dialog {
  overflow: hidden !important;
}

.itk-picker-dialog .itk-dialog-browser,
.itk-saver-dialog .itk-dialog-browser {
  min-height: 0;
  overflow: hidden;
}

.itk-picker-list-panel,
.itk-saver-list,
.itk-dialog-tree-pane,
.itk-picker-preview-pane {
  min-height: 0;
  overflow: hidden;
}

.itk-picker-list,
.itk-saver-list,
.itk-dialog-tree,
.itk-picker-preview-body {
  min-height: 0;
  max-height: 100%;
  overflow: auto;
}

.itk-picker-entry.is-preview-target:not(.is-selected) {
  background: #f8fafc;
  outline: 1px solid #bfdbfe;
  outline-offset: -1px;
}

.itk-picker-preview-summary {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: #334155;
  font-size: 13px;
}

.itk-picker-preview-summary-icon {
  font-size: 32px;
  line-height: 1.2;
  text-align: center;
}

.itk-picker-preview-summary-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid #e5e7eb;
}

.itk-picker-preview-summary-row span {
  color: #64748b;
}

.itk-picker-preview-summary-row strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 500;
  color: #111827;
}

/* v1.9.9-fix3: sample Host preview provider card styling. */
.itk-fe-host-preview-card {
    border: 1px solid #d6e2f3;
    border-radius: 10px;
    padding: 14px 16px;
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.itk-fe-host-preview-card h3 {
    margin: 0 0 8px 0;
    font-size: 16px;
}

.itk-fe-host-preview-card p {
    margin: 0 0 10px 0;
    color: #53647e;
    line-height: 1.5;
}

.itk-fe-host-preview-card small {
    color: #7b8aa2;
}


/* v2.1 metadata and capability UI */
.itk-fe-meta-summary {
    margin-bottom: 8px;
}
.itk-fe-permission-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin: 6px 0 8px 0;
}
.itk-fe-permission-badge {
    border: 1px solid #d0d7de;
    border-radius: 12px;
    padding: 2px 8px;
    font-size: 11px;
    background: #f6f8fa;
    color: #24292f;
}
.itk-fe-permission-badge.level-warning {
    background: #fff8c5;
    border-color: #eac54f;
}
.itk-fe-permission-badge.level-info {
    background: #ddf4ff;
    border-color: #54aeef;
}
.itk-fe-meta-form-extended label {
    display: block;
    margin: 6px 0;
    font-size: 12px;
}
.itk-fe-meta-form-extended input,
.itk-fe-meta-form-extended textarea {
    box-sizing: border-box;
    width: 100%;
    margin-top: 2px;
}
.itk-fe-meta-form-extended textarea[data-role="metaCustom"] {
    min-height: 80px;
    font-family: Consolas, Monaco, monospace;
    font-size: 12px;
}
.itk-saver-workflow-row,
.itk-saver-export-row {
    align-items: center;
}
.itk-saver-workflow-row select,
.itk-saver-export-row select {
    min-width: 180px;
}