/* ============================================
   JSONLab - Editor / Tool Workspace
   ============================================ */

/* ===== Tool workspace layout ===== */
.tool-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr;
  gap: var(--space-4);
  position: relative;
  min-width: 0;
  width: 100%;
}

@media (min-width: 768px) {
  .tool-workspace {
    height: calc(100vh - var(--header-height) - 104px);
    min-height: 500px;
  }
}

body.tool-page .tool-workspace {
  margin-bottom: var(--space-8) !important;
}

.tool-workspace.single {
  grid-template-columns: 1fr;
}

.tool-pane {
  display: flex;
  flex-direction: column;
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-height: 0;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  flex-shrink: 0;
}

.pane-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
}

.pane-title .badge {
  font-size: 0.625rem;
}

.pane-actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.pane-actions .btn-icon {
  width: 28px;
  height: 28px;
}

.pane-actions .btn-icon svg {
  width: 14px;
  height: 14px;
}

.pane-body {
  flex: 1 1 0%;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* ===== Code editor (textarea + highlights) ===== */
.editor-wrap {
  position: relative;
  flex: 1 1 0%;
  display: flex;
  min-height: 0;
  overflow: hidden;
}

.editor-textarea,
.editor-output {
  flex: 1;
  width: 100%;
  border: none;
  outline: none;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  background: var(--bg-elevated);
  color: var(--text-primary);
  resize: none;
  white-space: pre;
  overflow: auto;
  tab-size: 2;
  -moz-tab-size: 2;
}

.editor-textarea::placeholder {
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.editor-output {
  background: var(--bg-code);
  cursor: auto;
}

.editor-output.readonly {
  cursor: default;
}

/* ===== Syntax highlighted output ===== */
.json-render {
  flex: 1;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  overflow: auto;
  background: var(--bg-code);
  white-space: pre;
  color: var(--text-primary);
}

/* Token classes — global scope for input + output */
.tok-key {
  color: var(--syntax-key);
  font-weight: 500;
}

.tok-string {
  color: var(--syntax-string);
}

.tok-number {
  color: var(--syntax-number);
}

.tok-boolean {
  color: var(--syntax-boolean);
}

.tok-null {
  color: var(--syntax-null);
  font-style: italic;
}

.tok-punct {
  color: var(--syntax-punctuation);
}

.tok-property {
  color: var(--syntax-property);
}

/* Legacy scoped rules (backward compat) */
.json-render .tok-key {
  color: var(--syntax-key);
  font-weight: 500;
}

.json-render .tok-string {
  color: var(--syntax-string);
}

.json-render .tok-number {
  color: var(--syntax-number);
}

.json-render .tok-boolean {
  color: var(--syntax-boolean);
}

.json-render .tok-null {
  color: var(--syntax-null);
  font-style: italic;
}

.json-render .tok-punct {
  color: var(--syntax-punctuation);
}

.json-render .tok-property {
  color: var(--syntax-property);
}

/* ===== Input syntax highlighting overlay ===== */
.editor-wrap-highlighted {
  position: relative;
}

.editor-wrap-highlighted .editor-highlight {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  white-space: pre;
  overflow: auto;
  pointer-events: none;
  color: var(--text-primary);
  background: transparent;
  border: none;
  z-index: 0;
}

.editor-wrap-highlighted .editor-textarea {
  position: relative;
  background: transparent;
  color: transparent;
  caret-color: var(--text-primary);
  z-index: 1;
}

.editor-wrap-highlighted .editor-textarea::selection {
  background: rgba(88, 166, 255, 0.3);
  color: transparent;
}

[data-theme="dark"] .editor-wrap-highlighted .editor-textarea::selection {
  background: rgba(88, 166, 255, 0.3);
}

.json-render .collapsible-toggle {
  display: inline-block;
  width: 16px;
  cursor: pointer;
  user-select: none;
  color: var(--text-tertiary);
  text-align: center;
}

.json-render .collapsible-toggle:hover {
  color: var(--brand-primary);
}

.json-render .collapsed {
  display: inline-block;
}

.json-render .collapsed-content {
  display: none;
}

.json-render .line {
  display: block;
}

.json-render .line-number {
  display: inline-block;
  width: 3em;
  padding-right: 1em;
  text-align: right;
  color: var(--text-tertiary);
  user-select: none;
  border-right: 1px solid var(--border-primary);
  margin-right: 1em;
}

/* ===== Tree view ===== */
.tree-view {
  flex: 1;
  padding: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  overflow: auto;
  background: var(--bg-code);
  line-height: 1.75;
}

.tree-node {
  position: relative;
}

.tree-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  cursor: default;
  transition: background var(--transition-fast);
}

.tree-row:hover {
  background: var(--bg-hover);
}

.tree-row.has-children {
  cursor: pointer;
}

.tree-toggle {
  width: 16px;
  height: 16px;
  display: inline-grid;
  place-items: center;
  color: var(--text-tertiary);
  font-size: 0.625rem;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.tree-node.collapsed>.tree-row .tree-toggle {
  transform: rotate(-90deg);
}

.tree-key {
  color: var(--syntax-property);
  font-weight: 500;
}

.tree-colon {
  color: var(--syntax-punctuation);
  margin: 0 4px;
}

.tree-value {
  color: var(--syntax-string);
}

.tree-value.number {
  color: var(--syntax-number);
}

.tree-value.boolean {
  color: var(--syntax-boolean);
}

.tree-value.null {
  color: var(--syntax-null);
  font-style: italic;
}

.tree-value.key-only {
  color: var(--text-tertiary);
}

.tree-type-badge {
  font-size: 0.625rem;
  color: var(--text-tertiary);
  background: var(--bg-secondary);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  margin-left: var(--space-2);
}

.tree-children {
  margin-left: 20px;
  border-left: 1px solid var(--border-primary);
  padding-left: var(--space-2);
}

.tree-node.collapsed>.tree-children {
  display: none;
}

.tree-preview {
  color: var(--text-tertiary);
  font-size: 0.75rem;
  margin-left: var(--space-2);
}

/* ===== Diff view ===== */
.diff-view {
  flex: 1;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  overflow: auto;
  background: var(--bg-code);
  line-height: 1.7;
}

.diff-line {
  display: flex;
  gap: var(--space-2);
  padding: 0 var(--space-2);
  white-space: pre;
}

.diff-line.added {
  background: var(--success-bg);
  color: var(--success);
}

.diff-line.removed {
  background: var(--error-bg);
  color: var(--error);
}

.diff-line.unchanged {
  color: var(--text-secondary);
}

.diff-line.info {
  background: var(--info-bg);
  color: var(--info);
  font-weight: 500;
}

.diff-line-prefix {
  width: 20px;
  flex-shrink: 0;
  color: inherit;
  opacity: 0.7;
}

.diff-line-content {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-summary {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  font-size: 0.75rem;
  flex-wrap: wrap;
}

.diff-stat {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.diff-stat .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.diff-stat.added .dot {
  background: var(--success);
}

.diff-stat.removed .dot {
  background: var(--error);
}

.diff-stat.unchanged .dot {
  background: var(--text-tertiary);
}

/* ===== Toolbar ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.toolbar-group+.toolbar-group {
  border-left: 1px solid var(--border-primary);
  padding-left: var(--space-3);
  margin-left: var(--space-1);
}

.toolbar-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.toolbar .select {
  width: auto;
  padding: var(--space-2) var(--space-3);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
}

/* ===== Status bar ===== */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  font-size: 0.6875rem;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.status-bar .status-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.status-bar .status-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.status-dot.success {
  background: var(--success);
}

.status-dot.error {
  background: var(--error);
}

.status-dot.warning {
  background: var(--warning);
}

/* ===== Splitter (resizable) ===== */
.splitter {
  width: 6px;
  background: transparent;
  cursor: col-resize;
  position: relative;
  flex-shrink: 0;
  margin: 0 -3px;
  z-index: 5;
}

.splitter::after {
  content: '';
  position: absolute;
  top: 20%;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: var(--border-primary);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.splitter:hover::after,
.splitter.active::after {
  background: var(--brand-primary);
}

/* ===== Empty state ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-4);
  text-align: center;
  color: var(--text-tertiary);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state h4 {
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  font-weight: 500;
}

.empty-state p {
  font-size: 0.8125rem;
  max-width: 320px;
}

/* ===== Drop zone ===== */
.drop-zone {
  position: relative;
  border: 2px dashed var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--brand-primary);
  background: var(--bg-selected);
}

.drop-zone svg {
  width: 40px;
  height: 40px;
  margin: 0 auto var(--space-3);
  color: var(--text-tertiary);
}

.drop-zone.dragover svg {
  color: var(--brand-primary);
}

/* ===== Search results ===== */
.search-results {
  flex: 1;
  padding: var(--space-3);
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--bg-code);
}

.search-result {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  margin-bottom: var(--space-1);
}

.search-result:hover {
  background: var(--bg-hover);
}

.search-result .path {
  color: var(--text-tertiary);
  font-size: 0.75rem;
  margin-bottom: 2px;
}

.search-result .value {
  color: var(--syntax-string);
}

.search-result mark {
  background: var(--warning-bg);
  color: var(--warning);
  padding: 0 2px;
  border-radius: 2px;
}

/* ===== Converter options ===== */
.options-panel {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.option-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.option-item .label {
  margin: 0;
  display: inline;
}

/* ===== Output toolbar ===== */
.output-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-primary);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.output-tab {
  padding: var(--space-2) var(--space-4);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.output-tab:hover {
  color: var(--text-primary);
}

.output-tab.active {
  color: var(--brand-primary);
  border-bottom-color: var(--brand-primary);
}

/* ===== Editor with line numbers ===== */
.editor-with-lines {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

.line-numbers {
  padding: var(--space-4) var(--space-2);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-primary);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-tertiary);
  text-align: right;
  user-select: none;
  overflow: hidden;
  white-space: pre;
  flex-shrink: 0;
  min-width: 48px;
}

/* ===== Dark mode IDE enhancements ===== */
[data-theme="dark"] .tool-pane {
  border-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .pane-header {
  background: #161b22;
  border-bottom-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .editor-textarea,
[data-theme="dark"] .editor-output {
  background: #0d1117;
  color: #e6edf3;
}

[data-theme="dark"] .editor-textarea::placeholder {
  color: #6e7681;
}

[data-theme="dark"] .editor-output {
  background: #161b22;
}

[data-theme="dark"] .json-render {
  background: #161b22;
}

[data-theme="dark"] .tree-view {
  background: #161b22;
}

[data-theme="dark"] .diff-view {
  background: #161b22;
}

[data-theme="dark"] .toolbar {
  background: #161b22;
  border-bottom-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .status-bar {
  background: #161b22;
  border-top-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .search-results {
  background: #161b22;
}

[data-theme="dark"] .options-panel {
  background: #161b22;
}

[data-theme="dark"] .output-tabs {
  background: #161b22;
  border-bottom-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .output-tab.active {
  color: #58a6ff;
  border-bottom-color: #58a6ff;
}

[data-theme="dark"] .line-numbers {
  background: #161b22;
  border-right-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .json-render .line-number {
  border-right-color: rgba(240, 246, 252, 0.08);
}

[data-theme="dark"] .splitter:hover::after,
[data-theme="dark"] .splitter.active::after {
  background: #58a6ff;
}

[data-theme="dark"] .diff-line.added {
  background: rgba(63, 185, 80, 0.12);
  color: #3fb950;
}

[data-theme="dark"] .diff-line.removed {
  background: rgba(248, 81, 73, 0.12);
  color: #f85149;
}

[data-theme="dark"] .diff-line.info {
  background: rgba(88, 166, 255, 0.12);
  color: #58a6ff;
}

[data-theme="dark"] .tree-children {
  border-left-color: rgba(240, 246, 252, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tool-pane {
    border-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .pane-header {
    background: #161b22;
    border-bottom-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .editor-textarea,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .editor-output {
    background: #0d1117;
    color: #e6edf3;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .editor-textarea::placeholder {
    color: #6e7681;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .editor-output {
    background: #161b22;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .json-render {
    background: #161b22;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .tree-view {
    background: #161b22;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .diff-view {
    background: #161b22;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .toolbar {
    background: #161b22;
    border-bottom-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .status-bar {
    background: #161b22;
    border-top-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .search-results {
    background: #161b22;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .options-panel {
    background: #161b22;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .output-tabs {
    background: #161b22;
    border-bottom-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .output-tab.active {
    color: #58a6ff;
    border-bottom-color: #58a6ff;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .line-numbers {
    background: #161b22;
    border-right-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .json-render .line-number {
    border-right-color: rgba(240, 246, 252, 0.08);
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .splitter:hover::after,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .splitter.active::after {
    background: #58a6ff;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .diff-line.added {
    background: rgba(63, 185, 80, 0.12);
    color: #3fb950;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .diff-line.removed {
    background: rgba(248, 81, 73, 0.12);
    color: #f85149;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .diff-line.info {
    background: rgba(88, 166, 255, 0.12);
    color: #58a6ff;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .tree-children {
    border-left-color: rgba(240, 246, 252, 0.08);
  }
}