/* Clean, intuitive TOC editing styles
 * 
 * UX Design:
 * - Double-click to edit any TOC item
 * - Delete key or button to remove item
 * - + button to add sibling items, Ctrl+N to add child items
 * - Minimal, non-intrusive button UI with subtle hover effects
 * - Clean, natural interaction pattern for document outline editing
 */

/* Toolbar at the top of the TOC */
.tocToolbar {
  display: flex;
  gap: 12px;
  padding: 4px 6px;
  border-bottom: 1px solid var(--toolbar-border-color, rgb(184 184 184));
  background-color: var(--sidebar-toolbar-bg-color, rgb(245 246 247));
  margin-bottom: 4px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  align-items: center;
}

/* Search container */
.tocSearchContainer {
  flex: 1;
  display: flex;
  min-width: 0;
}

.tocSearchInput {
  flex: 1;
  padding: 2px 8px;
  border: 1px solid var(--field-border-color, rgb(187 187 188));
  background: var(--field-bg-color, rgb(255 255 255));
  border-radius: 2px;
  font-size: 11px;
  line-height: 1.2;
  height: 20px;
  color: var(--field-color, rgb(6 6 6));
  font-family: inherit;
  outline: none;
  transition: all 0.15s ease;
}

.tocSearchInput:focus {
  border-color: var(--field-border-color, rgb(187 187 188));
  box-shadow: 0 0 0 1px var(--field-border-color, rgb(187 187 188));
}

.tocSearchInput::placeholder {
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  opacity: 0.5;
}

.outline-editing-mode .treeItem {
  display: block;
  padding: 2px 0;
  margin: 1px 0;
  border-left: 2px solid transparent;
  transition: all 0.15s ease;
  line-height: 1.4;
  overflow: hidden;
  pointer-events: auto;
  position: relative;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
}

/* Item content container - contains title, page number, and buttons */
.outline-editing-mode .treeItem > .treeItemContent {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-left: 4px;
}

.treeItemToggler {
  width: 16px !important;
  height: 16px !important;
  min-width: 16px !important;
  min-height: 16px !important;
  cursor: pointer;
  margin-right: 4px;
}

.treeItemToggler::before {
  position: absolute;
  left: 0;
  top: 0;
  width: 16px;
  height: 16px;
  content: "";
  background-color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  mask-image: var(--treeitem-expanded-icon);
  mask-size: cover;
  -webkit-mask-image: var(--treeitem-expanded-icon);
  -webkit-mask-size: cover;
}

.treeItemToggler.treeItemsHidden::before {
  mask-image: var(--treeitem-collapsed-icon);
  -webkit-mask-image: var(--treeitem-collapsed-icon);
  transform: scaleX(var(--dir-factor));
}

.treeItemTogglerSpacer {
  width: 16px;
  height: 16px;
  min-width: 16px;
  min-height: 16px;
  margin-right: 4px;
  float: left;
}

.outline-editing-mode .treeItemToggler {
  float: left;
  margin-right: 4px;
}

.outline-editing-mode .treeItem:hover {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  border-radius: 2px;
  color: var(--treeitem-hover-color, rgb(0 0 0 / 0.9));
}

.outline-editing-mode .treeItem.selected {
  background-color: var(--treeitem-selected-bg-color, rgb(0 0 0 / 0.25));
  border-radius: 2px;
  color: var(--treeitem-selected-color, rgb(0 0 0 / 0.9));
  font-weight: 500;
}

.outline-editing-mode .treeItem.highlighted {
  background-color: rgba(33, 150, 243, 0.2);
  border-left-color: #2196f3;
  color: #2196f3;
}

.outline-editing-mode .treeItem.highlighted a {
  color: #2196f3;
  font-weight: 500;
}

.outline-editing-mode .treeItem:focus-within {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  border-radius: 2px;
}

/* Inline edit input */
.treeItemEditInput {
  display: inline-block;
  min-width: 100px;
  padding: 4px 8px;
  border: 1px solid var(--field-border-color, rgb(187 187 188));
  border-radius: 2px;
  font-size: 13px;
  font-family: inherit;
  background: var(--field-bg-color, rgb(255 255 255));
  color: var(--field-color, rgb(6 6 6));
  outline: none;
}

.treeItemEditInput:focus {
  border-color: var(--field-border-color, rgb(187 187 188));
  box-shadow: 0 0 0 1px var(--field-border-color, rgb(187 187 188));
}

/* Page number display */
.treeItemPageNumber {
  display: inline-block;
  margin-left: auto;
  padding: 1px 4px;
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  border-radius: 2px;
  font-size: 11px;
  font-weight: normal;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.treeItemPageNumber:hover {
  background-color: var(--treeitem-selected-bg-color, rgb(0 0 0 / 0.25));
  color: var(--treeitem-hover-color, rgb(0 0 0 / 0.9));
}

/* Page number edit input */
.treeItemPageEditInput {
  display: inline-block;
  width: 60px;
  padding: 2px 4px;
  border: 1px solid var(--field-border-color, rgb(187 187 188));
  border-radius: 2px;
  font-size: 12px;
  font-family: inherit;
  background: var(--field-bg-color, rgb(255 255 255));
  color: var(--field-color, rgb(6 6 6));
  outline: none;
  text-align: center;
}

.treeItemPageEditInput:focus {
  border-color: var(--field-border-color, rgb(187 187 188));
  box-shadow: 0 0 0 1px var(--field-border-color, rgb(187 187 188));
}

/* Tree item link text - with clipping */
.outline-editing-mode .treeItem a {
  display: inline-block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  overflow: hidden;
  flex: 1;
  min-width: 0;
  padding: 1px 3px;
  font-size: 13px;
}

.outline-editing-mode .treeItem a:hover {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  color: var(--treeitem-hover-color, rgb(0 0 0 / 0.9));
}

/* Level 1 items (file names) - enhanced border styling */
.outline-editing-mode .treeItemLevel1 {
  border-left: 3px solid var(--treeitem-level1-border-color, rgb(10 132 255)) !important;
  margin-bottom: 4px;
}

.outline-editing-mode .treeItemLevel1 > .treeItemContent {
  padding-left: 8px;
}

.outline-editing-mode .treeItemLevel1 a {
  font-weight: 600;
}

/* Control buttons toolbar - hidden since buttons are in top toolbar now */
.treeItemControls {
  display: none;
}

/* Empty state messaging */
.tocEmptyState {
  padding: 16px;
  text-align: center;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  opacity: 0.6;
  font-size: 13px;
  line-height: 1.5;
}

/* Menu button with three dots */
.treeItemMenuButton {
  padding: 2px 4px;
  border: 1px solid var(--field-border-color, rgb(187 187 188));
  background: var(--field-bg-color, rgb(255 255 255));
  border-radius: 2px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  width: 22px;
  height: 18px;
  transition: all 0.15s ease;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
}

.treeItemMenuButton:hover {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  color: var(--treeitem-hover-color, rgb(0 0 0 / 0.9));
  border-color: var(--field-border-color, rgb(187 187 188));
  opacity: 1;
}

.treeItemMenuButton:active {
  transform: scale(0.95);
}

/* Dropdown menu */
.treeItemMenu {
  position: fixed;
  background: var(--doorhanger-bg-color, rgb(255 255 255));
  border: 1px solid var(--doorhanger-border-color, rgb(12 12 13 / 0.2));
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  min-width: 120px;
  padding: 4px 0;
}

.treeItemMenuItem {
  padding: 6px 12px;
  cursor: pointer;
  font-size: 12px;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  transition: background-color 0.15s ease;
}

.treeItemMenuItem:hover {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
}

.treeItemMenuItemDanger {
  color: rgb(220 38 38);
}

.treeItemMenuItemDanger:hover {
  background-color: rgba(220, 38, 38, 0.1);
}

/* Make tree items keyboard accessible */
.outline-editing-mode .treeItem {
  cursor: pointer;
  outline: none;
}

.outline-editing-mode .treeItem:focus {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  border-radius: 2px;
  outline: none;
}

/* Nested items styling - YAML style tree structure with clear indentation */
.outline-editing-mode .treeItems {
  margin-left: 16px;
  padding-left: 6px;
  border-left: 1px solid var(--separator-color, rgb(0 0 0 / 0.3));
  margin-top: 1px;
  margin-bottom: 2px;
  opacity: 0.8;
}

/* Additional indentation levels */
.outline-editing-mode .treeItems .treeItems {
  margin-left: 16px;
  padding-left: 6px;
  border-left: 1px solid var(--separator-color, rgb(0 0 0 / 0.3));
}

/* Index button styling */
.treeItemIndexButton {
  padding: 2px 6px;
  border: 1px solid var(--field-border-color, rgb(187 187 188));
  background: var(--field-bg-color, rgb(255 255 255));
  border-radius: 2px;
  cursor: pointer;
  font-size: 11px;
  line-height: 1.2;
  min-width: 0;
  width: 80px;
  height: 32px;
  transition: all 0.15s ease;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  flex-shrink: 0;
  font-weight: normal;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-family: inherit;
  position: relative;
  overflow: visible;
}

.treeItemIndexButtonText {
  text-align: center;
  line-height: 1.2;
  font-size: 11px;
}

.treeItemIndexButton:hover:not(:disabled):not(.cancelable) {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15));
  color: var(--treeitem-hover-color, rgb(0 0 0 / 0.9));
  border-color: var(--field-border-color, rgb(187 187 188));
}

.treeItemIndexButton:active:not(:disabled) {
  transform: scale(0.95);
}

.treeItemIndexButton:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  border-color: var(--separator-color, rgb(0 0 0 / 0.3));
}

.treeItemIndexButton.indexing {
  opacity: 0.9;
}

/* Show X icon on hover when cancelable */
.treeItemIndexButton.cancelable {
  position: relative !important;
  cursor: pointer !important;
  pointer-events: auto !important;
  overflow: visible !important;
}

.treeItemIndexButton.cancelable:disabled {
  opacity: 0.9 !important;
  cursor: pointer !important;
  pointer-events: auto !important;
}

/* Override default hover styles for cancelable button - use very high specificity */
.tocToolbar button.treeItemIndexButton.cancelable:hover,
.tocToolbar button.treeItemIndexButton.cancelable:hover:disabled,
button.treeItemIndexButton.cancelable:hover,
button.treeItemIndexButton.cancelable:hover:disabled,
.treeItemIndexButton.cancelable:hover,
.treeItemIndexButton.cancelable:hover:disabled {
  background-color: var(--treeitem-bg-color, rgb(0 0 0 / 0.15)) !important;
  border-color: var(--field-border-color, rgb(187 187 188)) !important;
  cursor: pointer !important;
  box-shadow: 0 0 0 1px rgba(220, 53, 69, 0.3) !important;
  overflow: visible !important;
}

/* X icon - make sure it's visible and not covered */
.tocToolbar button.treeItemIndexButton.cancelable:hover::after,
.tocToolbar button.treeItemIndexButton.cancelable:hover:disabled::after,
button.treeItemIndexButton.cancelable:hover::after,
button.treeItemIndexButton.cancelable:hover:disabled::after,
.treeItemIndexButton.cancelable:hover::after,
.treeItemIndexButton.cancelable:hover:disabled::after {
  content: "✕" !important;
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  font-size: 18px !important;
  color: #dc3545 !important;
  font-weight: bold !important;
  font-family: Arial, sans-serif !important;
  pointer-events: none !important;
  z-index: 99999 !important;
  line-height: 1 !important;
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
}

/* Hide button text and spinner when hovering cancelable button */
.tocToolbar button.treeItemIndexButton.cancelable:hover .treeItemIndexButtonText,
.tocToolbar button.treeItemIndexButton.cancelable:hover:disabled .treeItemIndexButtonText,
button.treeItemIndexButton.cancelable:hover .treeItemIndexButtonText,
button.treeItemIndexButton.cancelable:hover:disabled .treeItemIndexButtonText,
.treeItemIndexButton.cancelable:hover .treeItemIndexButtonText,
.treeItemIndexButton.cancelable:hover:disabled .treeItemIndexButtonText {
  opacity: 0 !important;
  visibility: hidden !important;
  display: none !important;
  position: absolute !important;
  z-index: -1 !important;
}

.tocToolbar button.treeItemIndexButton.cancelable:hover .treeItemIndexButtonSpinner,
.tocToolbar button.treeItemIndexButton.cancelable:hover:disabled .treeItemIndexButtonSpinner,
button.treeItemIndexButton.cancelable:hover .treeItemIndexButtonSpinner,
button.treeItemIndexButton.cancelable:hover:disabled .treeItemIndexButtonSpinner,
.treeItemIndexButton.cancelable:hover .treeItemIndexButtonSpinner,
.treeItemIndexButton.cancelable:hover:disabled .treeItemIndexButtonSpinner {
  opacity: 0 !important;
  visibility: hidden !important;
  display: none !important;
  position: absolute !important;
  z-index: -1 !important;
}

/* Index button spinner */
.treeItemIndexButtonSpinner {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--treeitem-color, rgb(0 0 0 / 0.8));
  border-top-color: transparent;
  border-radius: 50%;
  animation: treeItemIndexButtonSpin 0.8s linear infinite;
}

.treeItemIndexButton:disabled .treeItemIndexButtonSpinner {
  border-color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  border-top-color: transparent;
}

/* Indexing progress bar */
.indexingProgressContainer {
  width: 100%;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--toolbar-border-color, rgb(184 184 184));
  background-color: var(--sidebar-toolbar-bg-color, rgb(245 246 247));
}

/* Item-specific indexing progress bar (below individual outline items) */
.itemIndexingProgressContainer {
  width: 100%;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--toolbar-border-color, rgb(184 184 184));
  background-color: var(--sidebar-toolbar-bg-color, rgb(245 246 247));
}

.itemIndexingCancelButton {
  padding: 4px 8px;
  border: 1px solid var(--field-border-color, rgb(187 187 188));
  background: var(--field-bg-color, rgb(255 255 255));
  border-radius: 2px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  min-width: 24px;
  height: 20px;
  color: #dc3545;
  font-weight: bold;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.itemIndexingCancelButton:hover {
  background-color: rgba(220, 53, 69, 0.1);
  border-color: #dc3545;
}

.itemIndexingCancelButton:active {
  transform: scale(0.95);
}

.indexingProgressBar {
  flex: 1;
  height: 4px;
  background-color: var(--progressBar-bg-color, rgb(221 221 222));
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.indexingProgressBar::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--progress-width, 0%);
  background-color: var(--progressBar-color, rgb(10 132 255));
  transition: width 0.3s ease;
  border-radius: 2px;
}

.indexingProgressText {
  font-size: 10px;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  white-space: nowrap;
  min-width: 80px;
  text-align: left;
}

/* Extraction progress bar (compact, next to button) */
.extractionProgressContainer {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
}

.extractionProgressBar {
  width: 120px;
  height: 4px;
  background-color: var(--progressBar-bg-color, rgb(221 221 222));
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.extractionProgressBar::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--progress-width, 0%);
  background-color: var(--progressBar-color, rgb(10 132 255));
  transition: width 0.3s ease;
  border-radius: 2px;
}

.extractionProgressText {
  font-size: 10px;
  color: var(--treeitem-color, rgb(0 0 0 / 0.8));
  white-space: nowrap;
  min-width: 60px;
}

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

/* Skeleton loading animation */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.tocSkeletonLoading {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skeletonItem {
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fadeIn 0.3s ease;
}

.skeletonLine {
  height: 16px;
  background: linear-gradient(
    90deg,
    #e0e0e0 0%,
    #f0f0f0 50%,
    #e0e0e0 100%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: 4px;
  flex: 1;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}