/* Tool Page Workspace Layout */
.tool-main {
  padding: 16px 0 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 12px;
  color: var(--c-text-muted);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--c-text-muted);
}

.breadcrumb a:hover {
  color: var(--c-primary);
}

/* Tool Header */
.tool-head-area {
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.tool-head-info h1 {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 6px 0;
  color: var(--c-text-main);
}

.tool-head-info p {
  font-size: 13px;
  color: var(--c-text-muted);
  margin: 0;
}

.tool-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tool-head-actions .btn-primary {
  padding: 8px 20px;
}

.tool-head-options {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-head-options .head-option-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-text-muted);
  white-space: nowrap;
}

.tool-head-options .head-option-item label {
  font-weight: 500;
}

.tool-head-options .option-select {
  padding: 6px 8px;
  font-size: 12px;
}

/* Tool Workspace Panels */
.tool-workspace {
  display: flex;
  gap: 16px;
  flex: 1;
  min-height: 400px;
}

@media (max-width: 992px) {
  .tool-workspace {
    flex-direction: column;
  }
}

.workspace-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: #f8fafc;
  border-bottom: 1px solid var(--c-border);
}

.panel-title {
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.panel-actions {
  display: flex;
  gap: 6px;
}

.panel-actions .btn-sm {
  padding: 3px 8px;
  font-size: 11px;
}

/* Editor Component (Custom High-Quality Textarea with Line Numbers) */
.editor-container {
  display: flex;
  flex: 1;
  position: relative;
  background: #fff;
  font-family: var(--font-code);
  font-size: 13px;
  line-height: 1.6;
}

.editor-linenos {
  width: 40px;
  padding: 12px 0;
  background: #f8fafc;
  border-right: 1px solid var(--c-border);
  color: #94a3b8;
  text-align: right;
  padding-right: 8px;
  user-select: none;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  overflow: hidden;
}

.editor-textarea {
  flex: 1;
  border: none;
  resize: none;
  padding: 12px;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: var(--c-text-main);
  background: transparent;
  outline: none;
  white-space: pre;
  overflow: auto;
}

.editor-textarea::placeholder {
  color: #cbd5e1;
}

.editor-wrap {
  flex: 1;
  position: relative;
  min-width: 0;
  display: flex;
}

.editor-diff-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.editor-wrap .editor-textarea {
  position: relative;
  z-index: 1;
  width: 100%;
}

.diff-bg-line {
  height: 1.6em;
  white-space: pre;
}

.diff-bg-removed {
  background: rgba(254, 202, 202, 0.45);
}

.diff-bg-added {
  background: rgba(187, 247, 208, 0.45);
}

.diff-bg-modified {
  background: rgba(254, 240, 138, 0.5);
}

.editor-linenos .diff-ln {
  display: inline-block;
  min-width: 24px;
  border-radius: 3px;
  padding-right: 4px;
}

.editor-linenos .diff-ln-removed {
  background: #fecaca;
  color: #b91c1c;
  font-weight: 600;
}

.editor-linenos .diff-ln-added {
  background: #bbf7d0;
  color: #15803d;
  font-weight: 600;
}

.editor-linenos .diff-ln-modified {
  background: #fef08a;
  color: #a16207;
  font-weight: 600;
}

.tool-workspace.dual-diff-mode .workspace-panel:last-child .panel-tabs,
.tool-workspace.dual-diff-mode .workspace-panel:last-child .panel-statusbar {
  display: none !important;
}

/* Tabs for Output View Modes (Code / Tree / Table / Preview) */
.panel-tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--c-border);
  background: #f8fafc;
  padding: 4px 12px 0;
}

.panel-tabs-left {
  display: flex;
  gap: 4px;
}

.panel-tabs-right {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 4px;
  margin-left: auto;
}

.preview-char-count {
  font-size: 12px;
  color: var(--c-text-muted);
  white-space: nowrap;
}

.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn-export svg {
  flex-shrink: 0;
}

.btn-export-pdf {
  background: #fff;
  color: var(--c-text-main);
  border: 1px solid var(--c-border);
}

.btn-export-pdf:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.btn-export-word {
  background: var(--c-primary);
  color: #fff;
  border: 1px solid var(--c-primary);
}

.btn-export-word:hover {
  filter: brightness(1.05);
}

.panel-tab {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--c-text-muted);
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
  background: transparent;
  margin-bottom: -1px;
}

.panel-tab:hover {
  color: var(--c-text-main);
}

.panel-tab.active {
  color: var(--c-primary);
  background: var(--c-surface);
  border-color: var(--c-border);
  font-weight: 600;
}

/* Output Tree / Grid View */
.output-view-area {
  flex: 1;
  padding: 16px;
  overflow: auto;
  display: none;
  background: #fff;
}

.output-view-area.active {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 0;
}

.output-view-area.active .preview-iframe {
  flex: 1;
  width: 100%;
  min-height: 360px;
  border: none;
  background: #fff;
}

.output-view-area.preview-html {
  padding: 20px;
  display: none;
}

.output-view-area.preview-html.active {
  display: block;
}

/* Interactive Tree Nodes */
.tree-node {
  font-family: var(--font-code);
  font-size: 13px;
  line-height: 1.6;
  padding-left: 16px;
  position: relative;
}

.tree-node-toggle {
  position: absolute;
  left: 0;
  top: 4px;
  width: 12px;
  height: 12px;
  cursor: pointer;
  color: var(--c-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.tree-node-toggle:hover {
  color: var(--c-primary);
}

.tree-key {
  color: #7c3aed; /* Purple key names */
  font-weight: 500;
}

.tree-val-string { color: #059669; } /* Green string values */
.tree-val-number { color: #d97706; } /* Orange numbers */
.tree-val-boolean { color: #2563eb; font-weight: bold; } /* Blue boolean */
.tree-val-null { color: #64748b; font-style: italic; }

/* Status Bar */
.panel-statusbar {
  padding: 4px 12px;
  background: #f8fafc;
  border-top: 1px solid var(--c-border);
  font-size: 11px;
  color: var(--c-text-muted);
  display: flex;
  justify-content: space-between;
}

/* Result Messaging Area */
.tool-message-bar {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.tool-message-bar.success {
  display: flex;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: var(--c-success);
}

.tool-message-bar.error {
  display: flex;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--c-error);
}

.message-text {
  font-weight: 500;
  flex: 1;
}

/* 标准工具操作栏（左：运行 / 右：选项，样式对齐格式化工具栏） */
.tool-action-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  padding: 10px 14px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.tool-action-toolbar-left,
.tool-action-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tool-action-toolbar-right {
  margin-left: auto;
}

.tool-btn-run {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  font-weight: 600;
}

.tool-btn-minify {
  padding: 7px 14px;
}

.tool-action-toolbar-right .tool-options-inline {
  justify-content: flex-end;
}

.tool-options-inline {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  margin-left: auto;
}

.tool-options-inline .tool-option-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-text-muted);
  white-space: nowrap;
}

.tool-options-inline .tool-option-item label {
  font-weight: 500;
  margin: 0;
}

.tool-options-inline .option-select {
  padding: 5px 8px;
  font-size: 12px;
  min-width: 100px;
}

.formatter-toolbar-right .tool-options-inline {
  padding-right: 8px;
  margin-right: 4px;
  border-right: 1px solid var(--c-border);
}

.option-select, .option-input {
  padding: 4px 8px;
  font-size: 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  outline: none;
  background: #fff;
}

.option-select:focus, .option-input:focus {
  border-color: var(--c-primary);
}

/* 自定义布局内嵌区块（如 Unix 时间戳） */
.options-section {
  margin-top: 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 16px;
}

.options-title {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 12px 0;
  color: var(--c-text-main);
}

/* 同分类快捷导航栏 Same-Category Sub-Navigation Bar */
#category-sub-nav-container:not(:empty) {
  margin-bottom: 12px;
}

.category-sub-nav {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  background: #f8fafc;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.sub-nav-items {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1 1 0;
  min-width: 0;
  overflow: visible;
}

.sub-nav-label {
  font-size: 12px;
  font-weight: 600;
  color: #64748b;
  margin-right: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  padding-top: 3px;
  line-height: 1.6;
}

.sub-nav-item {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 100px;
  color: #475569;
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--c-border);
  transition: all 0.2s ease;
  font-weight: 500;
  white-space: nowrap;
}

.sub-nav-item.pending {
  opacity: 0.55;
  border-style: dashed;
  cursor: not-allowed;
}

.sub-nav-item:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
  background: #f1f5f9;
}

.sub-nav-item.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  font-weight: 600;
}

/* ===== 格式化工具专用布局 (SQL/HTML/JS/CSS) ===== */
.formatter-toolbar-wrap {
  margin-bottom: 12px;
}

.formatter-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.formatter-toolbar-left,
.formatter-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.fmt-btn-format {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  font-weight: 600;
}

.fmt-btn-minify {
  padding: 7px 14px;
}

.fmt-icon-group {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 4px;
  padding-left: 8px;
  border-left: 1px solid var(--c-border);
}

.fmt-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: #fff;
  color: #64748b;
  cursor: pointer;
  transition: all 0.15s;
}

.fmt-icon-btn:hover {
  background: #f1f5f9;
  color: var(--c-text-main);
  border-color: #cbd5e1;
}

.fmt-auto-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-text-muted);
  cursor: pointer;
  user-select: none;
}

.fmt-auto-toggle input {
  width: 14px;
  height: 14px;
  accent-color: var(--c-primary);
}

.fmt-indent-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 4px;
}

.fmt-indent-label {
  font-size: 12px;
  color: var(--c-text-muted);
  margin-right: 2px;
}

.fmt-indent-btn {
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--c-text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.fmt-indent-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.fmt-indent-btn.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

.formatter-status-bar {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 8px;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
}

.formatter-status-bar.success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #15803d;
}

.formatter-status-bar.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
}

.fmt-status-main {
  font-weight: 600;
}

.fmt-status-size {
  font-size: 12px;
  opacity: 0.85;
}

.tool-workspace.formatter-mode {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-surface);
}

.tool-workspace.formatter-mode .workspace-panel {
  border: none;
  border-radius: 0;
}

.tool-workspace.formatter-mode .workspace-panel:first-child {
  border-right: 1px solid var(--c-border);
}

.tool-workspace.formatter-mode .panel-header {
  background: #fff;
  padding: 8px 12px;
}

.fmt-panel-actions {
  display: flex;
  gap: 4px;
}

.tool-workspace.formatter-mode .panel-tabs {
  border-bottom: 1px solid var(--c-border);
}

.formatter-toolbar-wrap ~ .tool-head-area .tool-head-actions {
  display: none;
}

/* JSON 表格视图 */
.json-table-view-wrap {
  padding: 12px;
  overflow: auto;
}

.json-table-view {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.json-table-view th,
.json-table-view td {
  border: 1px solid var(--c-border);
  padding: 6px 10px;
  text-align: left;
}

.json-table-view th {
  background: #f8fafc;
  font-weight: 600;
  color: #475569;
}

.json-table-view tbody tr:nth-child(even) {
  background: #fafbfc;
}

.json-table-view tbody tr:hover {
  background: #f1f5f9;
}