v3.11.0

feat(dees-appui-tabs): improve horizontal tabs UX with scroll fades, hover scrollbar, and smooth scroll-to-selected
v3.10.0
2025-12-30 10:27:34 +00:00 · 2025-12-30 10:27:34 +00:00 · 2025-12-29 23:33:38 +00:00 · 2025-12-29 23:33:38 +00:00 · 2025-12-29 22:45:39 +00:00 · 2025-12-29 22:45:39 +00:00
81 changed files with 2179 additions and 834 deletions
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,90 @@
 # Changelog

+## 2025-12-30 - 3.11.0 - feat(dees-appui-tabs)
+improve horizontal tabs UX with scroll fades, hover scrollbar, and smooth scroll-to-selected
+
+- Add reactive scroll state (canScrollLeft / canScrollRight) and updateScrollState to track horizontal overflow.
+- Introduce scroll-fade gradient elements and CSS to indicate overflow on left/right edges.
+- Show a thin, styled scrollbar on hover (webkit + Firefox styling) instead of hiding it completely.
+- Auto-scroll selected tab into view using scrollTabIntoView and smooth scroll when selecting a tab.
+- Set up a ResizeObserver to recompute scroll state on container size changes and clean it up on disconnect.
+- Ensure lifecycle hooks call updateScrollState (firstUpdated/updated) so indicators stay in sync after render/fonts ready.
+
+## 2025-12-29 - 3.10.0 - feat(appui-tabs)
+add closeable tabs and auto-hide behavior for content tabs, plus API and events to control them
+
+- Add closeable tab support: IMenuItem.closeable & IMenuItem.onClose; dees-appui-tabs renders a close button, invokes onClose, and emits a 'tab-close' event.
+- Add auto-hide feature: dees-appui-tabs (autoHide, autoHideThreshold) and corresponding properties in dees-appui-maincontent/dees-appui-base to hide tabs when count ≤ threshold.
+- Expose new API: dees-appui-base.setContentTabsAutoHide(enabled, threshold) and update appconfig interface to include setContentTabsAutoHide.
+- Re-emit 'tab-close' events from dees-appui-maincontent and dees-appui-base so parent components can react to tab closures.
+- Add interactive demos (demo-closeable-tabs, demo-autohide-tabs) demonstrating the new closeable and auto-hide behaviors and controls.
+
+## 2025-12-29 - 3.9.0 - feat(dees-appui-mainmenu)
+add status badges to main menu items with theme-aware styling
+
+- Introduce .badge element and layout (min-width, height, padding, font-size, weight, border-radius) to display counts/status on menu items.
+- Add four badge variants: default, success, warning, error, using cssManager.bdTheme for light/dark color pairs.
+- Render the badge element conditionally in the menu item template when tabArg.badge is provided; hide badges when host has [collapsed] attribute.
+
+## 2025-12-29 - 3.8.0 - feat(dees-appui-base)
+add interactive demo controls to manipulate appui via view activation context
+
+- Store IViewActivationContext on the demo element (this.ctx) during onActivate
+- Add a new "Context Actions" UI section with buttons that call ctx.appui methods (toggle main/secondary menus, content tabs, collapse/expand main menu, set breadcrumbs, navigate to views, add activity entry, set/clear menu badges)
+- Include styles for ctx-actions and button variants (success, danger, hover states)
+- Change is limited to the demo file (dees-appui-base.demo.ts) and is non-breaking
+
+## 2025-12-29 - 3.7.1 - fix(dees-appui-maincontent)
+migrate main content layout to CSS Grid and enable topbar collapse transitions
+
+- Replace absolute positioning with CSS Grid on :host and .maincontainer to enable natural document flow
+- Make .topbar a grid and animate collapse via grid-template-rows; switch :host([notabs]) to grid-template-rows: 0fr instead of display:none to allow transitions
+- Set .maincontainer to display:contents and add min-height:0 on content areas and topbar children to fix overflow/scrolling and flex/grid height issues
+- Remove positional styles (position:absolute/top/left/right/bottom) so content scrolls correctly and layout is more robust
+
+## 2025-12-29 - 3.7.0 - feat(dees-contextmenu,dees-appui-tabs,test)
+Prevent double-destruction of context menus, await window layer teardown, update destroyAll behavior, remove tabs content slot, and adjust tests
+
+- Add isDestroying guard in DeesContextmenu.destroy to avoid double-destruction.
+- Await windowLayer.destroy() to ensure the window layer is fully torn down before continuing.
+- Ensure submenu timeouts are cleared and submenu.destroy() is awaited during teardown.
+- Change destroyAll to locate the root/top-level menu and destroy from the root to cascade teardown reliably.
+- Remove the .content wrapper and the <slot> output from dees-appui-tabs (demo updated to render content outside the component) — this is a breaking change to the tabs API (slotted content no longer rendered).
+- Increase test timeout in test.contextmenu-nested-close.browser.ts to 600ms to account for ~300ms windowLayer destruction + ~100ms context menu delay.
+
+## 2025-12-29 - 3.6.1 - fix(readme)
+document new App UI APIs to control main/secondary menu and content tabs visibility
+
+- Added docs for setMainMenuCollapsed(), setMainMenuVisible(), setSecondaryMenuCollapsed(), setSecondaryMenuVisible(), and setContentTabsVisible() programmatic APIs.
+- Included a TypeScript example showing how to hide secondary menu, hide content tabs, and collapse the main menu in a view's onActivate hook.
+
+## 2025-12-29 - 3.6.0 - feat(dees-appui)
+add visibility toggles for main/secondary menus and ability to show/hide content tabs; expose corresponding setters and appconfig entries
+
+- ts_web/elements/00group-appui/dees-appui-base: added boolean properties mainmenuVisible, secondarymenuVisible, maincontentTabsVisible; render main and secondary menus conditionally; pass showTabs to dees-appui-maincontent; added setter methods: setMainMenuVisible, setSecondaryMenuCollapsed, setSecondaryMenuVisible, setContentTabsVisible.
+- ts_web/elements/00group-appui/dees-appui-maincontent: added showTabs property, support for a notabs attribute via styles, updated() and firstUpdated() to apply notabs state so tabs can be hidden/shown dynamically.
+- ts_web/elements/interfaces/appconfig.ts: expanded appconfig interface to include setMainMenuVisible, setSecondaryMenuCollapsed, setSecondaryMenuVisible, setContentTabsVisible so host app can control visibility programmatically.
+- No breaking changes: defaults preserve existing behavior (menus and tabs remain visible by default).
+
+## 2025-12-29 - 3.5.1 - fix(dees-appui-view)
+remove DeesAppuiView component, its demo, documentation snippet, and related exports
+
+- Deleted component implementation: ts_web/elements/00group-appui/dees-appui-view/dees-appui-view.ts
+- Deleted demo file: ts_web/elements/00group-appui/dees-appui-view/dees-appui-view.demo.ts
+- Removed index re-export: ts_web/elements/00group-appui/dees-appui-view/index.ts (deleted) and removed export from ts_web/elements/00group-appui/index.ts
+- Removed documentation section for DeesAppuiView from readme.md
+- Breaking change: any consumers using the <dees-appui-view> component or its public API (selectTab, getMenuItems, getTabs) must be migrated to alternate components/approach
+
+## 2025-12-29 - 3.5.0 - feat(theme,interfaces)
+Introduce a global theming system and unify menu/tab interfaces; migrate components to use themeDefaultStyles and update APIs accordingly
+
+- Add a new theme module and component (00theme.ts + dees-theme) that provides CSS tokens and themeDefaultStyles to import into components
+- Migrate many components to include themeDefaultStyles in their static styles and add TODOs to replace hardcoded values with CSS variables
+- Rename ITab -> IMenuItem and replace group.tabs with group.items across interfaces and components (IMenuGroup shape changed) — this is a breaking API change
+- Remove legacy interfaces (ISecondaryMenuGroup, ISelectionOption) and update method and property types in DeesAppui* components and app config to use IMenuItem/IMenuGroup
+- Move @design.estate/dees-wcctools from dependencies to devDependencies and bump its version to ^3.3.0
+- Add numerous demo files and expand README with usage, examples and theme documentation
+
 ## 2025-12-19 - 3.4.0 - feat(dees-appui-base)
 overhaul AppUI core: replace simple view rendering with a full-featured ViewRegistry (caching, hide/show lifecycle, async lazy-loading), introduce view lifecycle hooks and activation context, add activity log API/component, remove built-in router and state manager, and update configuration interfaces and demos

--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@design.estate/dees-catalog",
-  "version": "3.4.0",
+  "version": "3.11.0",
  "private": false,
  "description": "A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.",
  "main": "dist_ts_web/index.js",
@@ -18,7 +18,6 @@
  "dependencies": {
    "@design.estate/dees-domtools": "^2.3.6",
    "@design.estate/dees-element": "^2.1.3",
-    "@design.estate/dees-wcctools": "^3.1.0",
    "@fortawesome/fontawesome-svg-core": "^7.1.0",
    "@fortawesome/free-brands-svg-icons": "^7.1.0",
    "@fortawesome/free-regular-svg-icons": "^7.1.0",
@@ -45,6 +44,7 @@
    "xterm-addon-fit": "^0.8.0"
  },
  "devDependencies": {
+    "@design.estate/dees-wcctools": "^3.3.0",
    "@git.zone/tsbuild": "^4.0.2",
    "@git.zone/tsbundle": "^2.6.3",
    "@git.zone/tstest": "^3.1.3",
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -15,8 +15,8 @@ importers:
        specifier: ^2.1.3
        version: 2.1.3
      '@design.estate/dees-wcctools':
-        specifier: ^3.1.0
-        version: 3.1.0
+        specifier: ^3.3.0
+        version: 3.3.0
      '@fortawesome/fontawesome-svg-core':
        specifier: ^7.1.0
        version: 7.1.0
@@ -350,8 +350,8 @@ packages:
  '@design.estate/dees-wcctools@1.3.0':
    resolution: {integrity: sha512-+yd8c1gTIKNRQYCvG0xu6Am8dHsRm7ymluX2gnoBQN4aFOpZgIBi/v9CvGyPhTD1p/VRouIBz1wsUCejnwrFCA==}

-  '@design.estate/dees-wcctools@3.1.0':
-    resolution: {integrity: sha512-EZsgvZZ736PORt8FkHvzKzsmsHDkYOngcWfL1eBEutT3HBQq4PW5X6PVWSHXFzbhI6rt3O07GJHEIa+xU2mSkQ==}
+  '@design.estate/dees-wcctools@3.3.0':
+    resolution: {integrity: sha512-ZOxG5LkbLLsqDQWO+JCOjFkL77l9FuLDa7LBuZRkTSX0jRoYG6ICI1UoI9i6twxm4JKSzQ4iHjL/F5mHbQiKTg==}

  '@emnapi/core@1.7.1':
    resolution: {integrity: sha512-o1uhUASyo921r2XtHYOHy7gdkGLge8ghBEQHMWmyJFoXlpU58kIrhhN3w26lpQb6dspetweapMn2CSNwQ8I4wg==}
@@ -5409,7 +5409,7 @@ snapshots:
      - supports-color
      - vue

-  '@design.estate/dees-wcctools@3.1.0':
+  '@design.estate/dees-wcctools@3.3.0':
    dependencies:
      '@design.estate/dees-domtools': 2.3.6
      '@design.estate/dees-element': 2.1.3
@@ -6805,20 +6805,17 @@ snapshots:
    transitivePeerDependencies:
      - '@aws-sdk/credential-providers'
      - '@mongodb-js/zstd'
-      - '@nuxt/kit'
      - aws-crt
      - bare-abort-controller
      - bufferutil
      - gcp-metadata
      - kerberos
      - mongodb-client-encryption
-      - react
      - react-native-b4a
      - snappy
      - socks
      - supports-color
      - utf-8-validate
-      - vue

  '@push.rocks/taskbuffer@3.5.0':
    dependencies:
--- a/readme.md
+++ b/readme.md
@@ -1,32 +1,71 @@
 # @design.estate/dees-catalog
-A comprehensive web components library built with TypeScript and LitElement, providing 75+ UI components for building modern web applications with consistent design and behavior.

-## Development Guide
-For developers working on this library, please refer to the [UI Components Playbook](readme.playbook.md) for comprehensive patterns, best practices, and architectural guidelines.
+A comprehensive web components library built with TypeScript and LitElement, providing **75+ UI components** for building modern web applications with consistent design and behavior. 🚀

-## Install
-To install the `@design.estate/dees-catalog` library, you can use npm or any other compatible JavaScript package manager:
+[![TypeScript](https://img.shields.io/badge/TypeScript-5.0+-blue.svg)](https://www.typescriptlang.org/)
+[![LitElement](https://img.shields.io/badge/LitElement-4.0+-orange.svg)](https://lit.dev/)
+
+## Issue Reporting and Security
+
+For reporting bugs, issues, or security vulnerabilities, please visit [community.foss.global/](https://community.foss.global/). This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a [code.foss.global/](https://code.foss.global/) account to submit Pull Requests directly.
+
+## ✨ Features
+
+- 🎨 **Consistent Design System** - Beautiful, cohesive components following modern UI/UX principles
+- 🌙 **Dark/Light Theme Support** - All components automatically adapt to your theme
+- ⌨️ **Keyboard Accessible** - Full keyboard navigation and ARIA support
+- 📱 **Responsive** - Mobile-first design that works across all screen sizes
+- 🔧 **TypeScript-First** - Fully typed APIs with excellent IDE support
+- 🧩 **Modular** - Use only what you need, tree-shakeable architecture
+
+## 📦 Installation

 ```bash
 npm install @design.estate/dees-catalog
+# or
+pnpm add @design.estate/dees-catalog
 ```

-## Components Overview
+## 🚀 Quick Start
+
+```typescript
+import { html, DeesElement, customElement } from '@design.estate/dees-element';
+import '@design.estate/dees-catalog';
+
+@customElement('my-app')
+class MyApp extends DeesElement {
+  render() {
+    return html`
+      <dees-button type="highlighted" @click=${() => alert('Hello!')}>
+        Click me!
+      </dees-button>
+    `;
+  }
+}
+```
+
+## 📖 Development Guide
+
+For developers working on this library, please refer to the [UI Components Playbook](readme.playbook.md) for comprehensive patterns, best practices, and architectural guidelines.
+
+## 📚 Components Overview

 | Category | Components |
 |----------|------------|
-| Core UI | [`DeesButton`](#deesbutton), [`DeesButtonExit`](#deesbuttonexit), [`DeesButtonGroup`](#deesbuttongroup), [`DeesBadge`](#deesbadge), [`DeesChips`](#deeschips), [`DeesHeading`](#deesheading), [`DeesHint`](#deeshint), [`DeesIcon`](#deesicon), [`DeesLabel`](#deeslabel), [`DeesPanel`](#deespanel), [`DeesSearchbar`](#deessearchbar), [`DeesSpinner`](#deesspinner), [`DeesToast`](#deestoast), [`DeesWindowcontrols`](#deeswindowcontrols) |
-| Forms | [`DeesForm`](#deesform), [`DeesInputText`](#deesinputtext), [`DeesInputCheckbox`](#deesinputcheckbox), [`DeesInputDropdown`](#deesinputdropdown), [`DeesInputRadiogroup`](#deesinputradiogroup), [`DeesInputFileupload`](#deesinputfileupload), [`DeesInputIban`](#deesinputiban), [`DeesInputPhone`](#deesinputphone), [`DeesInputQuantitySelector`](#deesinputquantityselector), [`DeesInputMultitoggle`](#deesinputmultitoggle), [`DeesInputTags`](#deesinputtags), [`DeesInputTypelist`](#deesinputtypelist), [`DeesInputRichtext`](#deesinputrichtext), [`DeesInputWysiwyg`](#deesinputwysiwyg), [`DeesInputDatepicker`](#deesinputdatepicker), [`DeesInputSearchselect`](#deesinputsearchselect), [`DeesFormSubmit`](#deesformsubmit) |
-| Layout | [`DeesAppuiBase`](#deesappuibase), [`DeesAppuiMainmenu`](#deesappuimainmenu), [`DeesAppuiMainselector`](#deesappuimainselector), [`DeesAppuiMaincontent`](#deesappuimaincontent), [`DeesAppuiAppbar`](#deesappuiappbar), [`DeesAppuiActivitylog`](#deesappuiactivitylog), [`DeesAppuiProfiledropdown`](#deesappuiprofiledropdown), [`DeesAppuiTabs`](#deesappuitabs), [`DeesAppuiView`](#deesappuiview), [`DeesMobileNavigation`](#deesmobilenavigation), [`DeesDashboardGrid`](#deesdashboardgrid) |
-| Data Display | [`DeesTable`](#deestable), [`DeesDataviewCodebox`](#deesdataviewcodebox), [`DeesDataviewStatusobject`](#deesdataviewstatusobject), [`DeesPdf`](#deespdf), [`DeesStatsGrid`](#deesstatsgrid), [`DeesPagination`](#deespagination) |
-| Visualization | [`DeesChartArea`](#deeschartarea), [`DeesChartLog`](#deeschartlog) |
-| Dialogs & Overlays | [`DeesModal`](#deesmodal), [`DeesContextmenu`](#deescontextmenu), [`DeesSpeechbubble`](#deesspeechbubble), [`DeesWindowlayer`](#deeswindowlayer) |
-| Navigation | [`DeesStepper`](#deesstepper), [`DeesProgressbar`](#deesprogressbar) |
-| Development | [`DeesEditor`](#deeseditor), [`DeesEditorMarkdown`](#deeseditormarkdown), [`DeesEditorMarkdownoutlet`](#deeseditormarkdownoutlet), [`DeesTerminal`](#deesterminal), [`DeesUpdater`](#deesupdater) |
-| Auth & Utilities | [`DeesSimpleAppdash`](#deessimpleappdash), [`DeesSimpleLogin`](#deessimplelogin) |
-| Shopping | [`DeesShoppingProductcard`](#deesshoppingproductcard) |
+| **Core UI** | [`DeesButton`](#deesbutton), [`DeesButtonExit`](#deesbuttonexit), [`DeesButtonGroup`](#deesbuttongroup), [`DeesBadge`](#deesbadge), [`DeesChips`](#deeschips), [`DeesHeading`](#deesheading), [`DeesHint`](#deeshint), [`DeesIcon`](#deesicon), [`DeesLabel`](#deeslabel), [`DeesPanel`](#deespanel), [`DeesSearchbar`](#deessearchbar), [`DeesSpinner`](#deesspinner), [`DeesToast`](#deestoast), [`DeesWindowcontrols`](#deeswindowcontrols) |
+| **Forms** | [`DeesForm`](#deesform), [`DeesInputText`](#deesinputtext), [`DeesInputCheckbox`](#deesinputcheckbox), [`DeesInputDropdown`](#deesinputdropdown), [`DeesInputRadiogroup`](#deesinputradiogroup), [`DeesInputFileupload`](#deesinputfileupload), [`DeesInputIban`](#deesinputiban), [`DeesInputPhone`](#deesinputphone), [`DeesInputQuantitySelector`](#deesinputquantityselector), [`DeesInputMultitoggle`](#deesinputmultitoggle), [`DeesInputTags`](#deesinputtags), [`DeesInputTypelist`](#deesinputtypelist), [`DeesInputRichtext`](#deesinputrichtext), [`DeesInputWysiwyg`](#deesinputwysiwyg), [`DeesInputDatepicker`](#deesinputdatepicker), [`DeesInputSearchselect`](#deesinputsearchselect), [`DeesFormSubmit`](#deesformsubmit) |
+| **Layout** | [`DeesAppuiBase`](#deesappuibase), [`DeesAppuiMainmenu`](#deesappuimainmenu), [`DeesAppuiSecondarymenu`](#deesappuisecondarymenu), [`DeesAppuiMaincontent`](#deesappuimaincontent), [`DeesAppuiAppbar`](#deesappuiappbar), [`DeesAppuiActivitylog`](#deesappuiactivitylog), [`DeesAppuiProfiledropdown`](#deesappuiprofiledropdown), [`DeesAppuiTabs`](#deesappuitabs), [`DeesMobileNavigation`](#deesmobilenavigation), [`DeesDashboardGrid`](#deesdashboardgrid) |
+| **Data Display** | [`DeesTable`](#deestable), [`DeesDataviewCodebox`](#deesdataviewcodebox), [`DeesDataviewStatusobject`](#deesdataviewstatusobject), [`DeesPdf`](#deespdf), [`DeesStatsGrid`](#deesstatsgrid), [`DeesPagination`](#deespagination) |
+| **Visualization** | [`DeesChartArea`](#deeschartarea), [`DeesChartLog`](#deeschartlog) |
+| **Dialogs & Overlays** | [`DeesModal`](#deesmodal), [`DeesContextmenu`](#deescontextmenu), [`DeesSpeechbubble`](#deesspeechbubble), [`DeesWindowlayer`](#deeswindowlayer) |
+| **Navigation** | [`DeesStepper`](#deesstepper), [`DeesProgressbar`](#deesprogressbar) |
+| **Development** | [`DeesEditor`](#deeseditor), [`DeesEditorMarkdown`](#deeseditormarkdown), [`DeesEditorMarkdownoutlet`](#deeseditormarkdownoutlet), [`DeesTerminal`](#deesterminal), [`DeesUpdater`](#deesupdater) |
+| **Auth & Utilities** | [`DeesSimpleAppdash`](#deessimpleappdash), [`DeesSimpleLogin`](#deessimplelogin) |
+| **Shopping** | [`DeesShoppingProductcard`](#deesshoppingproductcard) |

-## Detailed Component Documentation
+---
+
+## 🎯 Detailed Component Documentation

 ### Core UI Components

@@ -84,7 +123,7 @@ Display icons from FontAwesome and Lucide icon libraries with library prefixes.
  color="#22c55e"       // Optional: custom color
 ></dees-icon>

-// Lucide icons - use 'lucide:' prefix  
+// Lucide icons - use 'lucide:' prefix
 <dees-icon
  icon="lucide:menu"    // Lucide icon with lucide: prefix
  iconSize="24"         // Size in pixels
@@ -148,16 +187,9 @@ const toast = await DeesToast.show({

 // Later dismiss programmatically
 toast.dismiss();
-
-// Component usage (not typically used directly)
-<dees-toast
-  message="Changes saved"
-  type="success"
-  duration="3000"
-></dees-toast>
 ```

-Key Features:
+**Key Features:**
 - Multiple toast types with distinct icons and colors
 - 6 position options for flexible placement
 - Auto-dismiss with visual progress indicator
@@ -254,6 +286,8 @@ Window control buttons (minimize, maximize, close) for desktop-like applications
 ></dees-windowcontrols>
 ```

+---
+
 ### Form Components

 #### `DeesForm`
@@ -427,7 +461,7 @@ Tag input component for managing lists of tags with auto-complete and validation
 ></dees-input-tags>
 ```

-Key Features:
+**Key Features:**
 - Add tags by pressing Enter or typing comma/semicolon
 - Remove tags with click or backspace
 - Auto-complete suggestions with keyboard navigation
@@ -464,7 +498,7 @@ Date and time picker component with calendar interface and manual typing support
  minDate="2025-01-01"          // Minimum selectable date
  maxDate="2025-12-31"          // Maximum selectable date
  .disabledDates=${[            // Array of disabled dates
-    '2025-01-10', 
+    '2025-01-10',
    '2025-01-11'
  ]}
  weekStartsOn={1}              // 0 = Sunday, 1 = Monday
@@ -473,7 +507,7 @@ Date and time picker component with calendar interface and manual typing support
 ></dees-input-datepicker>
 ```

-Key Features:
+**Key Features:**
 - Interactive calendar popup
 - Manual date typing with multiple formats
 - Optional time selection
@@ -487,7 +521,7 @@ Key Features:
 - Theme-aware styling
 - Live parsing and validation

-Manual Input Formats:
+**Manual Input Formats:**
 ```typescript
 // Date formats supported
 "2023-12-20"     // ISO format (YYYY-MM-DD)
@@ -500,8 +534,6 @@ Manual Input Formats:
 "12/20/2023 16:00"
 ```

-The component automatically parses and validates input as you type, updating the internal date value when a valid date is recognized.
-
 #### `DeesInputSearchselect`
 Search-enabled dropdown selection component.

@@ -535,7 +567,7 @@ Rich text editor with formatting toolbar powered by TipTap.
 ></dees-input-richtext>
 ```

-Key Features:
+**Key Features:**
 - Full formatting toolbar (bold, italic, underline, strike, etc.)
 - Heading levels (H1-H6)
 - Lists (bullet, ordered)
@@ -560,7 +592,7 @@ Advanced block-based editor with slash commands and rich content blocks.
 ></dees-input-wysiwyg>
 ```

-Key Features:
+**Key Features:**
 - Slash commands for quick formatting
 - Block-based editing (paragraphs, headings, lists, etc.)
 - Drag and drop block reordering
@@ -579,6 +611,8 @@ Submit button component specifically designed for `DeesForm`.
 >Submit Form</dees-form-submit>
 ```

+---
+
 ### Layout Components

 #### `DeesAppuiBase`
@@ -632,49 +666,62 @@ class MyApp extends DeesElement {
 - `navigateToView(viewId, params?)` - Navigate between views
 - `setAppBarMenus()`, `setBreadcrumbs()`, `setUser()` - Control the app bar
 - `setMainMenu()`, `setMainMenuSelection()`, `setMainMenuBadge()` - Control main navigation
- `setSecondaryMenu()`, `setContentTabs()` - Control view-specific UI
+- `setMainMenuCollapsed()`, `setMainMenuVisible()` - Control main menu visibility
+- `setSecondaryMenu()`, `setSecondaryMenuCollapsed()`, `setSecondaryMenuVisible()` - Control secondary menu
+- `setContentTabs()`, `setContentTabsVisible()` - Control view-specific UI
 - `activityLog.add()`, `activityLog.addMany()`, `activityLog.clear()` - Manage activity entries

+**View Visibility Control:**
+```typescript
+// In your view's onActivate hook
+onActivate(context: IViewActivationContext) {
+  // Hide secondary menu for a fullscreen view
+  context.appui.setSecondaryMenuVisible(false);
+
+  // Hide content tabs
+  context.appui.setContentTabsVisible(false);
+
+  // Collapse main menu to give more space
+  context.appui.setMainMenuCollapsed(true);
+}
+```
+
 #### `DeesAppuiMainmenu`
 Main navigation menu component for application-wide navigation.

 ```typescript
 <dees-appui-mainmenu
-  .menuItems=${[
+  .menuGroups=${[
    {
-      key: 'dashboard',
-      label: 'Dashboard',
-      icon: 'home',
-      action: () => handleNavigation('dashboard')
-    },
-    {
-      key: 'settings',
-      label: 'Settings',
-      icon: 'cog',
-      action: () => handleNavigation('settings')
+      name: 'Main',
+      items: [
+        { key: 'dashboard', iconName: 'lucide:home', action: () => navigate('dashboard') },
+        { key: 'settings', iconName: 'lucide:settings', action: () => navigate('settings') }
+      ]
    }
  ]}
  collapsed           // Optional: show collapsed version
-  position="left"     // Options: left, right
 ></dees-appui-mainmenu>
 ```

-#### `DeesAppuiMainselector`
-Secondary navigation component for sub-section selection.
+#### `DeesAppuiSecondarymenu`
+Secondary navigation component for sub-section selection with collapsible groups and badges.

 ```typescript
-<dees-appui-mainselector
-  .items=${[
+<dees-appui-secondarymenu
+  .heading=${'Projects'}
+  .groups=${[
    {
-      key: 'section1',
-      label: 'Section 1',
-      icon: 'folder',
-      action: () => selectSection('section1')
+      name: 'Active',
+      iconName: 'lucide:folder',
+      items: [
+        { key: 'Frontend App', iconName: 'lucide:code', action: () => select('frontend'), badge: 3, badgeVariant: 'warning' },
+        { key: 'API Server', iconName: 'lucide:server', action: () => select('api') }
+      ]
    }
  ]}
-  selectedKey="section1"  // Currently selected section
-  @selection-change=${handleSectionChange}
-></dees-appui-mainselector>
+  @item-select=${handleSectionChange}
+></dees-appui-secondarymenu>
 ```

 #### `DeesAppuiMaincontent`
@@ -683,16 +730,13 @@ Main content area with tab management support.
 ```typescript
 <dees-appui-maincontent
  .tabs=${[
-    {
-      key: 'tab1',
-      label: 'Tab 1',
-      content: html`<div>Tab 1 Content</div>`,
-      action: () => handleTabAction('tab1')
-    }
+    { key: 'Overview', iconName: 'lucide:home', action: () => selectTab('overview') },
+    { key: 'Details', iconName: 'lucide:info', action: () => selectTab('details') }
  ]}
-  selectedTab="tab1"     // Currently active tab
-  @tab-change=${handleTabChange}
-></dees-appui-maincontent>
+  @tab-select=${handleTabChange}
+>
+  <!-- Content goes here -->
+</dees-appui-maincontent>
 ```

 #### `DeesAppuiAppbar`
@@ -705,91 +749,65 @@ Professional application bar component with hierarchical menus, breadcrumb navig
      name: 'File',
      action: async () => {},  // No-op for parent menu items
      submenu: [
-        { 
-          name: 'New File', 
-          shortcut: 'Cmd+N', 
-          iconName: 'file-plus', 
-          action: async () => handleNewFile() 
+        {
+          name: 'New File',
+          shortcut: 'Cmd+N',
+          iconName: 'file-plus',
+          action: async () => handleNewFile()
        },
-        { 
-          name: 'Open...', 
-          shortcut: 'Cmd+O', 
-          iconName: 'folder-open', 
-          action: async () => handleOpen() 
+        {
+          name: 'Open...',
+          shortcut: 'Cmd+O',
+          iconName: 'folder-open',
+          action: async () => handleOpen()
        },
        { divider: true },  // Menu separator
-        { 
-          name: 'Save', 
-          shortcut: 'Cmd+S', 
-          iconName: 'save', 
+        {
+          name: 'Save',
+          shortcut: 'Cmd+S',
+          iconName: 'save',
          action: async () => handleSave(),
          disabled: true  // Disabled state
        }
      ]
-    },
-    {
-      name: 'Edit',
-      action: async () => {},
-      submenu: [
-        { name: 'Undo', shortcut: 'Cmd+Z', iconName: 'undo', action: async () => handleUndo() },
-        { name: 'Redo', shortcut: 'Cmd+Shift+Z', iconName: 'redo', action: async () => handleRedo() }
-      ]
    }
  ]}
-  .breadcrumbs=${'Project > src > components > AppBar.ts'}
-  .breadcrumbSeparator=${' > '}
+  .breadcrumbs=${'Project > src > components'}
  .showWindowControls=${true}
  .showSearch=${true}
-  .theme=${'dark'}  // Options: 'light' | 'dark'
  .user=${{
    name: 'John Doe',
-    avatar: '/path/to/avatar.jpg',  // Optional
+    avatar: '/path/to/avatar.jpg',
    status: 'online'  // Options: 'online' | 'offline' | 'busy' | 'away'
  }}
  @menu-select=${(e) => handleMenuSelect(e.detail.item)}
  @breadcrumb-navigate=${(e) => handleBreadcrumbClick(e.detail)}
-  @search-click=${() => handleSearchClick()}
-  @user-menu-open=${() => handleUserMenuOpen()}
 ></dees-appui-appbar>
 ```

-Key Features:
- **Hierarchical Menu System**
-  - Top-level text-only menus (following desktop UI standards)
-  - Dropdown submenus with icons and keyboard shortcuts
-  - Support for nested submenus
-  - Menu dividers for visual grouping
-  - Disabled state support
-  
- **Keyboard Navigation**
-  - Tab navigation between top-level items
-  - Arrow keys for dropdown navigation (Up/Down in dropdowns, Left/Right between top items)
-  - Enter to select items
-  - Escape to close dropdowns
-  - Home/End keys for first/last item
-  
- **Breadcrumb Navigation**
-  - Customizable breadcrumb trail
-  - Configurable separator
-  - Click events for navigation
-  
- **User Account Section**
-  - User avatar with fallback to initials
-  - Status indicator (online, offline, busy, away)
-  - Click handler for user menu
-  
- **Visual Features**
-  - Light and dark theme support
-  - Smooth animations and transitions
-  - Window controls integration
-  - Search icon with click handler
-  - Responsive layout using CSS Grid
-  
- **Accessibility**
-  - Full ARIA support (menubar, menuitem roles)
-  - Keyboard navigation
-  - Focus management
-  - Screen reader compatible
+**Key Features:**
+- **Hierarchical Menu System** - Top-level menus with dropdown submenus, icons, and keyboard shortcuts
+- **Keyboard Navigation** - Full keyboard support (Tab, Arrow keys, Enter, Escape)
+- **Breadcrumb Navigation** - Customizable breadcrumb trail with click events
+- **User Account Section** - Avatar with status indicator
+- **Accessibility** - Full ARIA support with menubar roles
+
+#### `DeesAppuiTabs`
+Reusable tab component with horizontal/vertical layout support.
+
+```typescript
+<dees-appui-tabs
+  .tabs=${[
+    { key: 'Home', iconName: 'lucide:home', action: () => console.log('Home') },
+    { key: 'Settings', iconName: 'lucide:settings', action: () => console.log('Settings') }
+  ]}
+  tabStyle="horizontal"  // Options: horizontal, vertical
+  showTabIndicator={true}
+  @tab-select=${handleTabSelect}
+></dees-appui-tabs>
+```
+
+---

 ### Data Display Components

@@ -825,9 +843,7 @@ Advanced table component with sorting, filtering, and action support.
 ></dees-table>
 ```

-##### DeesTable (Updated)
-
-Newer features available in `dees-table`:
+**Advanced Features:**
 - Schema-first columns or `displayFunction` rendering
 - Sorting via header clicks with `aria-sort` + `sortChange`
 - Global search with Lucene-like syntax; modes: `table`, `data`, `server`
@@ -846,9 +862,9 @@ Code display component with syntax highlighting and line numbers.
  progLang="typescript"  // Programming language for syntax highlighting
  .codeToDisplay=${`
    import { html } from '@design.estate/dees-element';
-    
+
    export const myComponent = () => {
-      return html`<div>Hello World</div>`;
+      return html\`<div>Hello World</div>\`;
    };
  `}
 ></dees-dataview-codebox>
@@ -865,18 +881,8 @@ Status display component for complex objects with nested status indicators.
    combinedStatus: 'partly_ok',
    combinedStatusText: 'Partially OK',
    details: [
-      {
-        name: 'Database',
-        value: 'Connected',
-        status: 'ok',
-        statusText: 'OK'
-      },
-      {
-        name: 'API Service',
-        value: 'Degraded',
-        status: 'partly_ok',
-        statusText: 'Partially OK'
-      }
+      { name: 'Database', value: 'Connected', status: 'ok', statusText: 'OK' },
+      { name: 'API Service', value: 'Degraded', status: 'partly_ok', statusText: 'Partially OK' }
    ]
  }}
 ></dees-dataview-statusobject>
@@ -890,19 +896,13 @@ PDF viewer component with navigation and zoom controls.
  source="path/to/document.pdf"  // URL or base64 encoded PDF
  page={1}            // Current page number
  scale={1.0}         // Zoom level
-  .controls=${[       // Optional: customize available controls
-    'zoom',
-    'download',
-    'print',
-    'navigation'
-  ]}
+  .controls=${['zoom', 'download', 'print', 'navigation']}
  @page-change=${handlePageChange}
-  @document-loaded=${handleDocumentLoaded}
 ></dees-pdf>
 ```

 #### `DeesStatsGrid`
-A responsive grid component for displaying statistical data with various visualization types including numbers, gauges, percentages, and trends.
+A responsive grid component for displaying statistical data with various visualization types.

 ```typescript
 <dees-statsgrid
@@ -915,23 +915,7 @@ A responsive grid component for displaying statistical data with various visuali
      type: 'number',
      icon: 'faDollarSign',
      description: '+12.5% from last month',
-      color: '#22c55e',
-      actions: [
-        {
-          name: 'View Details',
-          iconName: 'faChartLine',
-          action: async () => {
-            console.log('Viewing revenue details');
-          }
-        },
-        {
-          name: 'Export Data',
-          iconName: 'faFileExport',
-          action: async () => {
-            console.log('Exporting revenue data');
-          }
-        }
-      ]
+      color: '#22c55e'
    },
    {
      id: 'cpu',
@@ -940,8 +924,7 @@ A responsive grid component for displaying statistical data with various visuali
      type: 'gauge',
      icon: 'faMicrochip',
      gaugeOptions: {
-        min: 0,
-        max: 100,
+        min: 0, max: 100,
        thresholds: [
          { value: 0, color: '#22c55e' },
          { value: 60, color: '#f59e0b' },
@@ -949,15 +932,6 @@ A responsive grid component for displaying statistical data with various visuali
        ]
      }
    },
-    {
-      id: 'storage',
-      title: 'Storage Used',
-      value: 65,
-      type: 'percentage',
-      icon: 'faHardDrive',
-      description: '650 GB of 1 TB',
-      color: '#3b82f6'
-    },
    {
      id: 'requests',
      title: 'API Requests',
@@ -966,35 +940,10 @@ A responsive grid component for displaying statistical data with various visuali
      type: 'trend',
      icon: 'faServer',
      trendData: [45, 52, 38, 65, 72, 68, 75, 82, 79, 85, 88, 92]
-    },
-    {
-      id: 'uptime',
-      title: 'System Uptime',
-      value: '99.95%',
-      type: 'text',
-      icon: 'faCheckCircle',
-      color: '#22c55e',
-      description: 'Last 30 days'
    }
  ]}
-  .gridActions=${[
-    {
-      name: 'Refresh',
-      iconName: 'faSync',
-      action: async () => {
-        console.log('Refreshing stats...');
-      }
-    },
-    {
-      name: 'Export Report',
-      iconName: 'faFileExport',
-      action: async () => {
-        console.log('Exporting stats report...');
-      }
-    }
-  ]}
-  .minTileWidth=${250}  // Minimum tile width in pixels
-  .gap=${16}            // Gap between tiles in pixels
+  .minTileWidth=${250}
+  .gap=${16}
 ></dees-statsgrid>
 ```

@@ -1006,11 +955,13 @@ Pagination component for navigating through large datasets.
  totalItems={500}
  itemsPerPage={20}
  currentPage={1}
-  maxVisiblePages={7}  // Maximum page numbers to display
+  maxVisiblePages={7}
  @page-change=${handlePageChange}
 ></dees-pagination>
 ```

+---
+
 ### Visualization Components

 #### `DeesChartArea`
@@ -1018,7 +969,7 @@ Area chart component built on ApexCharts for visualizing time-series data.

 ```typescript
 <dees-chart-area
-  label="System Usage"    // Chart title
+  label="System Usage"
  .series=${[
    {
      name: 'CPU',
@@ -1027,14 +978,6 @@ Area chart component built on ApexCharts for visualizing time-series data.
        { x: '2025-01-15T07:00:00', y: 30 },
        { x: '2025-01-15T11:00:00', y: 20 }
      ]
-    },
-    {
-      name: 'Memory',
-      data: [
-        { x: '2025-01-15T03:00:00', y: 10 },
-        { x: '2025-01-15T07:00:00', y: 12 },
-        { x: '2025-01-15T11:00:00', y: 10 }
-      ]
    }
  ]}
 ></dees-chart-area>
@@ -1047,22 +990,16 @@ Specialized chart component for visualizing log data and events.
 <dees-chart-log
  label="System Events"
  .data=${[
-    {
-      timestamp: '2025-01-15T03:00:00',
-      event: 'Server Start',
-      type: 'info'
-    },
-    {
-      timestamp: '2025-01-15T03:15:00',
-      event: 'Error Detected',
-      type: 'error'
-    }
+    { timestamp: '2025-01-15T03:00:00', event: 'Server Start', type: 'info' },
+    { timestamp: '2025-01-15T03:15:00', event: 'Error Detected', type: 'error' }
  ]}
-  .filters=${['info', 'warning', 'error']}  // Event types to display
+  .filters=${['info', 'warning', 'error']}
  @event-click=${handleEventClick}
 ></dees-chart-log>
 ```

+---
+
 ### Dialogs & Overlays Components

 #### `DeesModal`
@@ -1074,36 +1011,14 @@ DeesModal.createAndShow({
  heading: 'Confirm Action',
  content: html`
    <dees-form>
-      <dees-input-text
-        .label=${'Enter reason'}
-      ></dees-input-text>
+      <dees-input-text .label=${'Enter reason'}></dees-input-text>
    </dees-form>
  `,
  menuOptions: [
-    {
-      name: 'Cancel',
-      action: async (modal) => {
-        modal.destroy();
-        return null;
-      }
-    },
-    {
-      name: 'Confirm',
-      action: async (modal) => {
-        // Handle confirmation
-        modal.destroy();
-        return null;
-      }
-    }
+    { name: 'Cancel', action: async (modal) => { modal.destroy(); return null; } },
+    { name: 'Confirm', action: async (modal) => { /* handle */ modal.destroy(); return null; } }
  ]
 });
-
-// Component usage
-<dees-modal
-  heading="Settings"
-  .content=${settingsContent}
-  .menuOptions=${actions}
-></dees-modal>
 ```

 #### `DeesContextmenu`
@@ -1112,19 +1027,10 @@ Context menu component for right-click actions.
 ```typescript
 <dees-contextmenu
  .items=${[
-    {
-      label: 'Edit',
-      icon: 'edit',
-      action: () => handleEdit()
-    },
-    {
-      label: 'Delete',
-      icon: 'trash',
-      action: () => handleDelete()
-    }
+    { label: 'Edit', icon: 'edit', action: () => handleEdit() },
+    { label: 'Delete', icon: 'trash', action: () => handleDelete() }
  ]}
-  position="right"    // Options: right, left, auto
-  @item-click=${handleMenuItemClick}
+  position="right"
 ></dees-contextmenu>
 ```

@@ -1134,39 +1040,22 @@ Tooltip-style speech bubble component for contextual information.
 ```typescript
 // Programmatic usage
 const bubble = await DeesSpeechbubble.createAndShow(
-  referenceElement,    // Element to attach to
+  referenceElement,
  'Helpful information about this feature'
 );
-
-// Component usage
-<dees-speechbubble
-  .reffedElement=${targetElement}
-  text="Click here to continue"
-></dees-speechbubble>
 ```

 #### `DeesWindowlayer`
 Base overlay component used by modal dialogs and other overlay components.

 ```typescript
-// Programmatic usage
 const layer = await DeesWindowLayer.createAndShow({
-  blur: true,    // Enable backdrop blur
+  blur: true,
 });
-
-// Component usage
-<dees-windowlayer
-  .options=${{
-    blur: true
-  }}
-  @clicked=${handleOverlayClick}
->
-  <div class="content">
-    <!-- Overlay content -->
-  </div>
-</dees-windowlayer>
 ```

+---
+
 ### Navigation Components

 #### `DeesStepper`
@@ -1175,23 +1064,9 @@ Multi-step navigation component for guided user flows.
 ```typescript
 <dees-stepper
  .steps=${[
-    {
-      key: 'personal',
-      label: 'Personal Info',
-      content: html`<div>Personal Information Form</div>`,
-      validation: () => validatePersonalInfo()
-    },
-    {
-      key: 'address',
-      label: 'Address',
-      content: html`<div>Address Form</div>`,
-      validation: () => validateAddress()
-    },
-    {
-      key: 'confirm',
-      label: 'Confirmation',
-      content: html`<div>Review and Confirm</div>`
-    }
+    { key: 'personal', label: 'Personal Info', content: html`<div>Form 1</div>` },
+    { key: 'address', label: 'Address', content: html`<div>Form 2</div>` },
+    { key: 'confirm', label: 'Confirmation', content: html`<div>Review</div>` }
  ]}
  currentStep="personal"
  @step-change=${handleStepChange}
@@ -1204,15 +1079,16 @@ Progress indicator component for tracking completion status.

 ```typescript
 <dees-progressbar
-  value={75}           // Current progress (0-100)
-  label="Uploading"    // Optional label
-  showPercentage      // Display percentage
+  value={75}
+  label="Uploading"
+  showPercentage
  type="determinate"  // Options: determinate, indeterminate
  status="normal"     // Options: normal, success, warning, error
-  @progress=${handleProgress}
 ></dees-progressbar>
 ```

+---
+
 ### Development Components

 #### `DeesEditor`
@@ -1239,12 +1115,7 @@ Markdown editor component with live preview.
 <dees-editor-markdown
  .value=${markdown}
  @change=${handleMarkdownChange}
-  .options=${{
-    preview: true,
-    toolbar: true,
-    spellcheck: true,
-    autosave: true
-  }}
+  .options=${{ preview: true, toolbar: true, spellcheck: true }}
 ></dees-editor-markdown>
 ```

@@ -1254,9 +1125,8 @@ Markdown preview component for rendering markdown content.
 ```typescript
 <dees-editor-markdownoutlet
  .markdown=${markdownContent}
-  .theme=${'github'}  // Options: github, dark, custom
-  .plugins=${['mermaid', 'highlight']}  // Optional plugins
-  allowHtml={false}   // Security: disable raw HTML
+  .theme=${'github'}
+  allowHtml={false}
 ></dees-editor-markdownoutlet>
 ```

@@ -1271,8 +1141,6 @@ Terminal emulator component for command-line interface.
  }}
  .prompt=${'$'}
  .welcomeMessage=${'Welcome! Type "help" for available commands.'}
-  .historySize=${100}
-  .autoFocus={true}
 ></dees-terminal>
 ```

@@ -1282,13 +1150,14 @@ Component for managing application updates and version control.
 ```typescript
 <dees-updater
  .currentVersion=${'1.5.2'}
-  .checkInterval=${3600000}  // Check every hour
+  .checkInterval=${3600000}
  .autoUpdate=${false}
  @update-available=${handleUpdateAvailable}
-  @update-progress=${handleUpdateProgress}
 ></dees-updater>
 ```

+---
+
 ### Auth & Utilities Components

 #### `DeesSimpleAppdash`
@@ -1301,10 +1170,7 @@ Simple application dashboard component for quick prototyping.
    { name: 'Dashboard', icon: 'home', route: '/dashboard' },
    { name: 'Settings', icon: 'settings', route: '/settings' }
  ]}
-  .user=${{
-    name: 'John Doe',
-    role: 'Administrator'
-  }}
+  .user=${{ name: 'John Doe', role: 'Administrator' }}
  @menu-select=${handleMenuSelect}
 >
  <!-- Dashboard content -->
@@ -1319,7 +1185,7 @@ Simple login form component with validation and customization.
  .appName=${'My Application'}
  .logo=${'./assets/logo.png'}
  .backgroundImage=${'./assets/background.jpg'}
-  .fields=${['username', 'password']}  // Options: username, email, password
+  .fields=${['username', 'password']}
  showForgotPassword
  showRememberMe
  @login=${handleLogin}
@@ -1327,6 +1193,8 @@ Simple login form component with validation and customization.
 ></dees-simple-login>
 ```

+---
+
 ### Shopping Components

 #### `DeesShoppingProductcard`
@@ -1339,37 +1207,61 @@ Product card component for e-commerce applications.
    category: 'Electronics',
    description: 'High-quality wireless headphones with noise cancellation',
    price: 199.99,
-    originalPrice: 249.99,  // Shows strikethrough price
+    originalPrice: 249.99,
    currency: '$',
    inStock: true,
-    stockText: 'In Stock',  // Custom stock text
-    imageUrl: '/images/headphones.jpg',
-    iconName: 'lucide:headphones' // Fallback icon if no image
+    imageUrl: '/images/headphones.jpg'
  }}
-  quantity={1}               // Current quantity
-  showQuantitySelector={true} // Show quantity selector
-  selectable={false}         // Enable selection mode
-  selected={false}           // Selection state
-  @quantityChange=${(e) => handleQuantityChange(e.detail)}
-  @selectionChange=${(e) => handleSelectionChange(e.detail)}
+  quantity={1}
+  showQuantitySelector={true}
+  @quantityChange=${handleQuantityChange}
 ></dees-shopping-productcard>
 ```

+---
+
+## 🔧 TypeScript Interfaces
+
+The library exports unified interfaces for consistent API patterns:
+
+```typescript
+// Base menu item interface (used by tabs, menus, etc.)
+interface IMenuItem {
+  key: string;
+  iconName?: string;
+  action: () => void;
+  badge?: string | number;
+  badgeVariant?: 'default' | 'success' | 'warning' | 'error';
+}
+
+// Menu group interface for organized menus
+interface IMenuGroup {
+  name: string;
+  items: IMenuItem[];
+  collapsed?: boolean;
+  iconName?: string;
+}
+```
+
+---
+
 ## License and Legal Information

-This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the license file within this repository.
+This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the [LICENSE](./LICENSE) file.

-Please note: The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.
+**Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.

 ### Trademarks

-This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH and are not included within the scope of the MIT license granted herein. Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines, and any usage must be approved in writing by Task Venture Capital GmbH.
+This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH or third parties, and are not included within the scope of the MIT license granted herein.
+
+Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines or the guidelines of the respective third-party owners, and any usage must be approved in writing. Third-party trademarks used herein are the property of their respective owners and used only in a descriptive manner, e.g. for an implementation of an API or similar.

 ### Company Information

 Task Venture Capital GmbH
-Registered at District court Bremen HRB 35230 HB, Germany
+Registered at District Court Bremen HRB 35230 HB, Germany

-For any legal inquiries or if you require further information, please contact us via email at hello@task.vc.
+For any legal inquiries or further information, please contact us via email at hello@task.vc.

 By using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.
--- a/test/test.contextmenu-nested-close.browser.ts
+++ b/test/test.contextmenu-nested-close.browser.ts
@@ -76,8 +76,8 @@ tap.test('should close all parent menus when clicking action in nested submenu',
  expect(childItem).toBeTruthy();
  childItem!.click();
  
-  // Wait for menus to close
-  await new Promise(resolve => setTimeout(resolve, 200));
+  // Wait for menus to close (windowLayer destruction takes 300ms + context menu 100ms)
+  await new Promise(resolve => setTimeout(resolve, 600));
  
  // Verify action was called
  expect(actionCalled).toEqual(true);
--- a/ts_web/00_commitinfo_data.ts
+++ b/ts_web/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
 */
 export const commitinfo = {
  name: '@design.estate/dees-catalog',
-  version: '3.4.0',
+  version: '3.11.0',
  description: 'A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.'
 }
--- a/ts_web/elements/00group-appui/dees-appui-activitylog/dees-appui-activitylog.demo.ts
+++ b/ts_web/elements/00group-appui/dees-appui-activitylog/dees-appui-activitylog.demo.ts
@@ -0,0 +1,45 @@
+import { html, cssManager } from '@design.estate/dees-element';
+import '@design.estate/dees-wcctools/demotools';
+import type { DeesAppuiActivitylog } from './dees-appui-activitylog.js';
+
+export const demoFunc = () => {
+  // Create the activity log element
+  const activityLog = document.createElement('dees-appui-activitylog') as DeesAppuiActivitylog;
+
+  // Add demo entries after the element is connected
+  setTimeout(() => {
+    activityLog.addMany([
+      { type: 'login', user: 'John Doe', message: 'logged in from Chrome on macOS' },
+      { type: 'create', user: 'John Doe', message: 'created a new project "Frontend App"' },
+      { type: 'update', user: 'Jane Smith', message: 'updated API documentation' },
+      { type: 'view', user: 'John Doe', message: 'viewed dashboard analytics' },
+      { type: 'delete', user: 'Admin', message: 'removed deprecated endpoint' },
+      { type: 'custom', user: 'System', message: 'scheduled backup completed', iconName: 'lucide:database' },
+      { type: 'logout', user: 'Alice Brown', message: 'logged out' },
+      { type: 'create', user: 'Jane Smith', message: 'created invoice #1234' },
+    ]);
+
+    // Subscribe to updates
+    activityLog.entries$.subscribe((entries) => {
+      console.log('Activity log updated:', entries.length, 'entries');
+    });
+  }, 100);
+
+  return html`
+    <dees-demowrapper>
+      <style>
+        .demo-container {
+          display: flex;
+          justify-content: center;
+          align-items: center;
+          height: 600px;
+          background: ${cssManager.bdTheme('#f4f4f5', '#09090b')};
+          padding: 32px;
+        }
+      </style>
+      <div class="demo-container">
+        ${activityLog}
+      </div>
+    </dees-demowrapper>
+  `;
+};
--- a/ts_web/elements/00group-appui/dees-appui-activitylog/dees-appui-activitylog.ts
+++ b/ts_web/elements/00group-appui/dees-appui-activitylog/dees-appui-activitylog.ts
@@ -12,53 +12,14 @@ import {
 import * as domtools from '@design.estate/dees-domtools';
 import { DeesContextmenu } from '../../dees-contextmenu/dees-contextmenu.js';
 import '../../dees-icon/dees-icon.js';
-import '@design.estate/dees-wcctools/demotools';
 import type { IActivityEntry, IActivityLogAPI } from '../../interfaces/appconfig.js';
+import { demoFunc } from './dees-appui-activitylog.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-appui-activitylog')
 export class DeesAppuiActivitylog extends DeesElement implements IActivityLogAPI {
  // STATIC
-  public static demo = () => {
-    // Create the activity log element
-    const activityLog = document.createElement('dees-appui-activitylog') as DeesAppuiActivitylog;
-
-    // Add demo entries after the element is connected
-    setTimeout(() => {
-      activityLog.addMany([
-        { type: 'login', user: 'John Doe', message: 'logged in from Chrome on macOS' },
-        { type: 'create', user: 'John Doe', message: 'created a new project "Frontend App"' },
-        { type: 'update', user: 'Jane Smith', message: 'updated API documentation' },
-        { type: 'view', user: 'John Doe', message: 'viewed dashboard analytics' },
-        { type: 'delete', user: 'Admin', message: 'removed deprecated endpoint' },
-        { type: 'custom', user: 'System', message: 'scheduled backup completed', iconName: 'lucide:database' },
-        { type: 'logout', user: 'Alice Brown', message: 'logged out' },
-        { type: 'create', user: 'Jane Smith', message: 'created invoice #1234' },
-      ]);
-
-      // Subscribe to updates
-      activityLog.entries$.subscribe((entries) => {
-        console.log('Activity log updated:', entries.length, 'entries');
-      });
-    }, 100);
-
-    return html`
-      <dees-demowrapper>
-        <style>
-          .demo-container {
-            display: flex;
-            justify-content: center;
-            align-items: center;
-            height: 600px;
-            background: ${cssManager.bdTheme('#f4f4f5', '#09090b')};
-            padding: 32px;
-          }
-        </style>
-        <div class="demo-container">
-          ${activityLog}
-        </div>
-      </dees-demowrapper>
-    `;
-  };
+  public static demo = demoFunc;

  // INSTANCE PROPERTIES
  @state()
@@ -75,8 +36,10 @@ export class DeesAppuiActivitylog extends DeesElement implements IActivityLogAPI

  // STYLES
  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('#09090b', '#fafafa')};
        position: relative;
--- a/ts_web/elements/00group-appui/dees-appui-base/dees-appui-base.demo.ts
+++ b/ts_web/elements/00group-appui/dees-appui-base/dees-appui-base.demo.ts
@@ -9,7 +9,10 @@ class DemoDashboardView extends DeesElement {
  @state()
  accessor activated: boolean = false;

+  private ctx: IViewActivationContext;
+
  onActivate(context: IViewActivationContext) {
+    this.ctx = context;
    this.activated = true;
    console.log('Dashboard activated with context:', context);

@@ -75,6 +78,52 @@ class DemoDashboardView extends DeesElement {
        .metric { font-size: 32px; font-weight: 700; color: #fafafa; }
        .status { display: inline-block; padding: 2px 8px; border-radius: 9px; font-size: 12px; }
        .status.active { background: #14532d; color: #4ade80; }
+
+        .ctx-actions {
+          margin-top: 32px;
+          padding: 24px;
+          background: rgba(255,255,255,0.02);
+          border: 1px solid rgba(255,255,255,0.08);
+          border-radius: 8px;
+        }
+        .ctx-actions h2 { color: #fafafa; font-size: 16px; font-weight: 600; margin-bottom: 16px; }
+        .button-grid {
+          display: flex;
+          flex-wrap: wrap;
+          gap: 8px;
+        }
+        .ctx-btn {
+          background: rgba(59, 130, 246, 0.1);
+          border: 1px solid rgba(59, 130, 246, 0.3);
+          color: #60a5fa;
+          padding: 8px 16px;
+          border-radius: 6px;
+          cursor: pointer;
+          font-size: 13px;
+          transition: all 0.15s ease;
+        }
+        .ctx-btn:hover {
+          background: rgba(59, 130, 246, 0.2);
+          border-color: rgba(59, 130, 246, 0.5);
+        }
+        .ctx-btn.danger {
+          background: rgba(239, 68, 68, 0.1);
+          border-color: rgba(239, 68, 68, 0.3);
+          color: #f87171;
+        }
+        .ctx-btn.danger:hover {
+          background: rgba(239, 68, 68, 0.2);
+          border-color: rgba(239, 68, 68, 0.5);
+        }
+        .ctx-btn.success {
+          background: rgba(34, 197, 94, 0.1);
+          border-color: rgba(34, 197, 94, 0.3);
+          color: #4ade80;
+        }
+        .ctx-btn.success:hover {
+          background: rgba(34, 197, 94, 0.2);
+          border-color: rgba(34, 197, 94, 0.5);
+        }
      </style>
      <h1>Dashboard</h1>
      <p>Welcome back! Here's an overview of your system.</p>
@@ -95,8 +144,48 @@ class DemoDashboardView extends DeesElement {
          <p style="color: #737373; font-size: 12px; margin: 0;">All systems operational</p>
        </div>
      </div>
+
+      <div class="ctx-actions">
+        <h2>Context Actions (ctx.appui)</h2>
+        <div class="button-grid">
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setMainMenuVisible(false)}>Hide Main Menu</button>
+          <button class="ctx-btn success" @click=${() => this.ctx?.appui.setMainMenuVisible(true)}>Show Main Menu</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setSecondaryMenuVisible(false)}>Hide Secondary Menu</button>
+          <button class="ctx-btn success" @click=${() => this.ctx?.appui.setSecondaryMenuVisible(true)}>Show Secondary Menu</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setContentTabsVisible(false)}>Hide Content Tabs</button>
+          <button class="ctx-btn success" @click=${() => this.ctx?.appui.setContentTabsVisible(true)}>Show Content Tabs</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setMainMenuCollapsed(true)}>Collapse Main Menu</button>
+          <button class="ctx-btn success" @click=${() => this.ctx?.appui.setMainMenuCollapsed(false)}>Expand Main Menu</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setBreadcrumbs(['Dashboard', 'Overview', 'Stats'])}>Set Breadcrumbs</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.navigateToView('projects')}>Go to Projects</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.navigateToView('settings', { section: 'security' })}>Go to Settings/Security</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.activityLog.add({ type: 'custom', user: 'Demo User', message: 'Button clicked from ctx!', iconName: 'lucide:mouse-pointer-click' })}>Add Activity Entry</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setMainMenuBadge('tasks', 99)}>Set Tasks Badge to 99</button>
+          <button class="ctx-btn danger" @click=${() => this.ctx?.appui.clearMainMenuBadge('tasks')}>Clear Tasks Badge</button>
+          <button class="ctx-btn" @click=${() => this.ctx?.appui.setContentTabsAutoHide(true, 1)}>Auto-hide Tabs (≤1)</button>
+          <button class="ctx-btn danger" @click=${() => this.ctx?.appui.setContentTabsAutoHide(false)}>Disable Auto-hide</button>
+          <button class="ctx-btn success" @click=${() => this.addCloseableTab()}>Add Closeable Tab</button>
+        </div>
+      </div>
    `;
  }
+
+  private tabCounter = 0;
+
+  private addCloseableTab() {
+    if (!this.ctx) return;
+    this.tabCounter++;
+    const tabKey = `Tab ${this.tabCounter}`;
+    this.ctx.appui.addContentTab({
+      key: tabKey,
+      iconName: 'lucide:file',
+      action: () => console.log(`Selected ${tabKey}`),
+      closeable: true,
+      onClose: () => {
+        this.ctx?.appui.removeContentTab(tabKey);
+      }
+    });
+  }
 }

 // Settings view with route params and canDeactivate guard
--- a/ts_web/elements/00group-appui/dees-appui-base/dees-appui-base.ts
+++ b/ts_web/elements/00group-appui/dees-appui-base/dees-appui-base.ts
@@ -16,6 +16,7 @@ import type { DeesAppuiSecondarymenu } from '../dees-appui-secondarymenu/dees-ap
 import type { DeesAppuiMaincontent } from '../dees-appui-maincontent/dees-appui-maincontent.js';
 import type { DeesAppuiActivitylog } from '../dees-appui-activitylog/dees-appui-activitylog.js';
 import { demoFunc } from './dees-appui-base.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 // View registry for managing views
 import { ViewRegistry } from './view.registry.js';
@@ -84,23 +85,23 @@ export class DeesAppuiBase extends DeesElement {
  accessor mainmenuGroups: interfaces.IMenuGroup[] = [];

  @property({ type: Array })
-  accessor mainmenuBottomTabs: interfaces.ITab[] = [];
+  accessor mainmenuBottomTabs: interfaces.IMenuItem[] = [];

  @property({ type: Array })
-  accessor mainmenuTabs: interfaces.ITab[] = [];
+  accessor mainmenuTabs: interfaces.IMenuItem[] = [];

  @property({ type: Object })
-  accessor mainmenuSelectedTab: interfaces.ITab | undefined = undefined;
+  accessor mainmenuSelectedTab: interfaces.IMenuItem | undefined = undefined;

  // Properties for secondarymenu
  @property({ type: String })
  accessor secondarymenuHeading: string = '';

  @property({ type: Array })
-  accessor secondarymenuGroups: interfaces.ISecondaryMenuGroup[] = [];
+  accessor secondarymenuGroups: interfaces.IMenuGroup[] = [];

  @property({ type: Object })
-  accessor secondarymenuSelectedItem: interfaces.ISecondaryMenuItem | undefined = undefined;
+  accessor secondarymenuSelectedItem: interfaces.IMenuItem | undefined = undefined;

  // Collapse states
  @property({ type: Boolean })
@@ -109,12 +110,28 @@ export class DeesAppuiBase extends DeesElement {
  @property({ type: Boolean })
  accessor secondarymenuCollapsed: boolean = false;

+  // Visibility states
+  @property({ type: Boolean })
+  accessor mainmenuVisible: boolean = true;
+
+  @property({ type: Boolean })
+  accessor secondarymenuVisible: boolean = true;
+
+  @property({ type: Boolean })
+  accessor maincontentTabsVisible: boolean = true;
+
+  @property({ type: Boolean })
+  accessor contentTabsAutoHide: boolean = false;
+
+  @property({ type: Number })
+  accessor contentTabsAutoHideThreshold: number = 0;
+
  // Properties for maincontent
  @property({ type: Array })
-  accessor maincontentTabs: interfaces.ITab[] = [];
+  accessor maincontentTabs: interfaces.IMenuItem[] = [];

  @property({ type: Object })
-  accessor maincontentSelectedTab: interfaces.ITab | undefined = undefined;
+  accessor maincontentSelectedTab: interfaces.IMenuItem | undefined = undefined;

  // References to child components
  @state()
@@ -142,8 +159,10 @@ export class DeesAppuiBase extends DeesElement {
  private searchCallback: ((query: string) => void) | null = null;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        position: absolute;
        height: 100%;
@@ -210,29 +229,37 @@ export class DeesAppuiBase extends DeesElement {
        @profile-menu-select=${(e: CustomEvent) => this.handleAppbarProfileMenuSelect(e)}
      ></dees-appui-appbar>
      <div class="maingrid">
-        <dees-appui-mainmenu
-          .logoIcon=${this.mainmenuLogoIcon}
-          .logoText=${this.mainmenuLogoText}
-          .menuGroups=${this.mainmenuGroups}
-          .bottomTabs=${this.mainmenuBottomTabs}
-          .tabs=${this.mainmenuTabs}
-          .selectedTab=${this.mainmenuSelectedTab}
-          .collapsed=${this.mainmenuCollapsed}
-          @tab-select=${(e: CustomEvent) => this.handleMainmenuTabSelect(e)}
-          @collapse-change=${(e: CustomEvent) => this.handleMainmenuCollapseChange(e)}
-        ></dees-appui-mainmenu>
-        <dees-appui-secondarymenu
-          .heading=${this.secondarymenuHeading}
-          .groups=${this.secondarymenuGroups}
-          .selectedItem=${this.secondarymenuSelectedItem}
-          .collapsed=${this.secondarymenuCollapsed}
-          @item-select=${(e: CustomEvent) => this.handleSecondarymenuItemSelect(e)}
-          @collapse-change=${(e: CustomEvent) => this.handleSecondarymenuCollapseChange(e)}
-        ></dees-appui-secondarymenu>
+        ${this.mainmenuVisible ? html`
+          <dees-appui-mainmenu
+            .logoIcon=${this.mainmenuLogoIcon}
+            .logoText=${this.mainmenuLogoText}
+            .menuGroups=${this.mainmenuGroups}
+            .bottomTabs=${this.mainmenuBottomTabs}
+            .tabs=${this.mainmenuTabs}
+            .selectedTab=${this.mainmenuSelectedTab}
+            .collapsed=${this.mainmenuCollapsed}
+            @tab-select=${(e: CustomEvent) => this.handleMainmenuTabSelect(e)}
+            @collapse-change=${(e: CustomEvent) => this.handleMainmenuCollapseChange(e)}
+          ></dees-appui-mainmenu>
+        ` : ''}
+        ${this.secondarymenuVisible ? html`
+          <dees-appui-secondarymenu
+            .heading=${this.secondarymenuHeading}
+            .groups=${this.secondarymenuGroups}
+            .selectedItem=${this.secondarymenuSelectedItem}
+            .collapsed=${this.secondarymenuCollapsed}
+            @item-select=${(e: CustomEvent) => this.handleSecondarymenuItemSelect(e)}
+            @collapse-change=${(e: CustomEvent) => this.handleSecondarymenuCollapseChange(e)}
+          ></dees-appui-secondarymenu>
+        ` : ''}
        <dees-appui-maincontent
          .tabs=${this.maincontentTabs}
          .selectedTab=${this.maincontentSelectedTab}
+          .showTabs=${this.maincontentTabsVisible}
+          .tabsAutoHide=${this.contentTabsAutoHide}
+          .tabsAutoHideThreshold=${this.contentTabsAutoHideThreshold}
          @tab-select=${(e: CustomEvent) => this.handleContentTabSelect(e)}
+          @tab-close=${(e: CustomEvent) => this.handleContentTabClose(e)}
        >
          <div class="view-container"></div>
          <slot name="maincontent"></slot>
@@ -370,12 +397,12 @@ export class DeesAppuiBase extends DeesElement {
  /**
   * Add a menu item to a specific group
   */
-  public addMainMenuItem(groupName: string, tab: interfaces.ITab): void {
+  public addMainMenuItem(groupName: string, tab: interfaces.IMenuItem): void {
    this.mainmenuGroups = this.mainmenuGroups.map(group => {
      if (group.name === groupName) {
        return {
          ...group,
-          tabs: [...(group.tabs || []), tab],
+          items: [...(group.items || []), tab],
        };
      }
      return group;
@@ -390,7 +417,7 @@ export class DeesAppuiBase extends DeesElement {
      if (group.name === groupName) {
        return {
          ...group,
-          tabs: (group.tabs || []).filter(t => t.key !== tabKey),
+          items: (group.items || []).filter(t => t.key !== tabKey),
        };
      }
      return group;
@@ -402,7 +429,7 @@ export class DeesAppuiBase extends DeesElement {
   */
  public setMainMenuSelection(tabKey: string): void {
    for (const group of this.mainmenuGroups) {
-      const tab = group.tabs?.find(t => t.key === tabKey);
+      const tab = group.items?.find(t => t.key === tabKey);
      if (tab) {
        this.mainmenuSelectedTab = tab;
        return;
@@ -422,13 +449,51 @@ export class DeesAppuiBase extends DeesElement {
    this.mainmenuCollapsed = collapsed;
  }

+  /**
+   * Set main menu visibility
+   */
+  public setMainMenuVisible(visible: boolean): void {
+    this.mainmenuVisible = visible;
+  }
+
+  /**
+   * Set secondary menu collapsed state
+   */
+  public setSecondaryMenuCollapsed(collapsed: boolean): void {
+    this.secondarymenuCollapsed = collapsed;
+  }
+
+  /**
+   * Set secondary menu visibility
+   */
+  public setSecondaryMenuVisible(visible: boolean): void {
+    this.secondarymenuVisible = visible;
+  }
+
+  /**
+   * Set content tabs visibility
+   */
+  public setContentTabsVisible(visible: boolean): void {
+    this.maincontentTabsVisible = visible;
+  }
+
+  /**
+   * Set content tabs auto-hide behavior
+   * @param enabled - Enable auto-hide feature
+   * @param threshold - Hide when tabs.length <= threshold (default 0 = hide when no tabs)
+   */
+  public setContentTabsAutoHide(enabled: boolean, threshold: number = 0): void {
+    this.contentTabsAutoHide = enabled;
+    this.contentTabsAutoHideThreshold = threshold;
+  }
+
  /**
   * Set a badge on a main menu item
   */
  public setMainMenuBadge(tabKey: string, badge: string | number): void {
    this.mainmenuGroups = this.mainmenuGroups.map(group => ({
      ...group,
-      tabs: (group.tabs || []).map(tab =>
+      items: (group.items || []).map(tab =>
        tab.key === tabKey ? { ...tab, badge } : tab
      ),
    }));
@@ -444,7 +509,7 @@ export class DeesAppuiBase extends DeesElement {
  public clearMainMenuBadge(tabKey: string): void {
    this.mainmenuGroups = this.mainmenuGroups.map(group => ({
      ...group,
-      tabs: (group.tabs || []).map(tab => {
+      items: (group.items || []).map(tab => {
        if (tab.key === tabKey) {
          const { badge, ...rest } = tab;
          return rest;
@@ -469,7 +534,7 @@ export class DeesAppuiBase extends DeesElement {
  /**
   * Set the secondary menu configuration
   */
-  public setSecondaryMenu(config: { heading?: string; groups: interfaces.ISecondaryMenuGroup[] }): void {
+  public setSecondaryMenu(config: { heading?: string; groups: interfaces.IMenuGroup[] }): void {
    if (config.heading !== undefined) {
      this.secondarymenuHeading = config.heading;
    }
@@ -479,7 +544,7 @@ export class DeesAppuiBase extends DeesElement {
  /**
   * Update a specific secondary menu group
   */
-  public updateSecondaryMenuGroup(groupName: string, update: Partial<interfaces.ISecondaryMenuGroup>): void {
+  public updateSecondaryMenuGroup(groupName: string, update: Partial<interfaces.IMenuGroup>): void {
    this.secondarymenuGroups = this.secondarymenuGroups.map(group =>
      group.name === groupName ? { ...group, ...update } : group
    );
@@ -490,7 +555,7 @@ export class DeesAppuiBase extends DeesElement {
   */
  public addSecondaryMenuItem(
    groupName: string,
-    item: interfaces.ISecondaryMenuGroup['items'][0]
+    item: interfaces.IMenuGroup['items'][0]
  ): void {
    this.secondarymenuGroups = this.secondarymenuGroups.map(group => {
      if (group.name === groupName) {
@@ -532,7 +597,7 @@ export class DeesAppuiBase extends DeesElement {
  /**
   * Set the content tabs
   */
-  public setContentTabs(tabs: interfaces.ITab[]): void {
+  public setContentTabs(tabs: interfaces.IMenuItem[]): void {
    this.maincontentTabs = [...tabs];
    if (tabs.length > 0 && !this.maincontentSelectedTab) {
      this.maincontentSelectedTab = tabs[0];
@@ -542,7 +607,7 @@ export class DeesAppuiBase extends DeesElement {
  /**
   * Add a content tab
   */
-  public addContentTab(tab: interfaces.ITab): void {
+  public addContentTab(tab: interfaces.IMenuItem): void {
    this.maincontentTabs = [...this.maincontentTabs, tab];
  }

@@ -569,7 +634,7 @@ export class DeesAppuiBase extends DeesElement {
  /**
   * Get the currently selected content tab
   */
-  public getSelectedContentTab(): interfaces.ITab | undefined {
+  public getSelectedContentTab(): interfaces.IMenuItem | undefined {
    return this.maincontentSelectedTab;
  }

@@ -779,7 +844,7 @@ export class DeesAppuiBase extends DeesElement {

    return config.mainMenu.sections.map((section) => ({
      name: section.name,
-      tabs: section.views
+      items: section.views
        .map((viewId) => {
          const view = this.viewRegistry.get(viewId);
          if (!view) {
@@ -791,13 +856,13 @@ export class DeesAppuiBase extends DeesElement {
            iconName: view.iconName,
            action: () => this.navigateToView(viewId),
            badge: view.badge,
-          } as interfaces.ITab;
+          } as interfaces.IMenuItem;
        })
-        .filter(Boolean) as interfaces.ITab[],
+        .filter(Boolean) as interfaces.IMenuItem[],
    }));
  }

-  private buildBottomTabsFromItems(items: string[]): interfaces.ITab[] {
+  private buildBottomTabsFromItems(items: string[]): interfaces.IMenuItem[] {
    return items
      .map((viewId) => {
        const view = this.viewRegistry.get(viewId);
@@ -809,9 +874,9 @@ export class DeesAppuiBase extends DeesElement {
          key: view.id,
          iconName: view.iconName,
          action: () => this.navigateToView(viewId),
-        } as interfaces.ITab;
+        } as interfaces.IMenuItem;
      })
-      .filter(Boolean) as interfaces.ITab[];
+      .filter(Boolean) as interfaces.IMenuItem[];
  }

  private async loadView(
@@ -974,4 +1039,12 @@ export class DeesAppuiBase extends DeesElement {
      composed: true
    }));
  }
+
+  private handleContentTabClose(e: CustomEvent) {
+    this.dispatchEvent(new CustomEvent('content-tab-close', {
+      detail: e.detail,
+      bubbles: true,
+      composed: true
+    }));
+  }
 }
--- a/ts_web/elements/00group-appui/dees-appui-maincontent/dees-appui-maincontent.ts
+++ b/ts_web/elements/00group-appui/dees-appui-maincontent/dees-appui-maincontent.ts
@@ -13,6 +13,7 @@ import {
 import * as domtools from '@design.estate/dees-domtools';
 import '../dees-appui-tabs/dees-appui-tabs.js';
 import type { DeesAppuiTabs } from '../dees-appui-tabs/dees-appui-tabs.js';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-appui-maincontent')
 export class DeesAppuiMaincontent extends DeesElement {
@@ -35,45 +36,59 @@ export class DeesAppuiMaincontent extends DeesElement {
  @property({
    type: Array,
  })
-  accessor tabs: interfaces.ITab[] = [
+  accessor tabs: interfaces.IMenuItem[] = [
    { key: '⚠️ Please set tabs', action: () => console.warn('No tabs configured for maincontent') },
  ];

  @property({ type: Object })
-  accessor selectedTab: interfaces.ITab | null = null;
+  accessor selectedTab: interfaces.IMenuItem | null = null;
+
+  @property({ type: Boolean })
+  accessor showTabs: boolean = true;
+
+  @property({ type: Boolean })
+  accessor tabsAutoHide: boolean = false;
+
+  @property({ type: Number })
+  accessor tabsAutoHideThreshold: number = 0;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('#333', '#fff')};
-        display: block;
+        display: grid;
+        grid-template-rows: auto 1fr;
        width: 100%;
        height: 100%;
-        position: relative;
        background: ${cssManager.bdTheme('#ffffff', '#161616')};
      }
+
      .maincontainer {
-        position: absolute;
-        height: 100%;
-        right: 0px;
-        top: 0px;
-        width: 100%;
+        display: contents;
      }

      .topbar {
-        position: absolute;
-        width: 100%;
+        display: grid;
+        grid-template-rows: 1fr;
+        overflow: hidden;
        user-select: none;
+        transition: grid-template-rows 0.3s ease;
+      }
+
+      .topbar > * {
+        min-height: 0;
      }

      .content-area {
-        position: absolute;
-        top: 60px;
-        left: 0;
-        right: 0;
-        bottom: 0;
        overflow: auto;
+        min-height: 0;
+      }
+
+      :host([notabs]) .topbar {
+        grid-template-rows: 0fr;
      }
    `,
  ];
@@ -87,7 +102,10 @@ export class DeesAppuiMaincontent extends DeesElement {
            .selectedTab=${this.selectedTab}
            .showTabIndicator=${true}
            .tabStyle=${'horizontal'}
+            .autoHide=${this.tabsAutoHide}
+            .autoHideThreshold=${this.tabsAutoHideThreshold}
            @tab-select=${(e: CustomEvent) => this.handleTabSelect(e)}
+            @tab-close=${(e: CustomEvent) => this.handleTabClose(e)}
          ></dees-appui-tabs>
        </div>
        <div class="content-area">
@@ -100,7 +118,7 @@ export class DeesAppuiMaincontent extends DeesElement {

  private handleTabSelect(e: CustomEvent) {
    this.selectedTab = e.detail.tab;
-    
+
    // Re-emit the event
    this.dispatchEvent(new CustomEvent('tab-select', {
      detail: e.detail,
@@ -109,8 +127,32 @@ export class DeesAppuiMaincontent extends DeesElement {
    }));
  }

+  private handleTabClose(e: CustomEvent) {
+    // Re-emit the event
+    this.dispatchEvent(new CustomEvent('tab-close', {
+      detail: e.detail,
+      bubbles: true,
+      composed: true
+    }));
+  }
+
+  updated(changedProperties: Map<string | number | symbol, unknown>) {
+    super.updated(changedProperties);
+    if (changedProperties.has('showTabs')) {
+      if (this.showTabs) {
+        this.removeAttribute('notabs');
+      } else {
+        this.setAttribute('notabs', '');
+      }
+    }
+  }
+
  async firstUpdated(_changedProperties: Map<string | number | symbol, unknown>) {
    await super.firstUpdated(_changedProperties);
+    // Apply initial notabs state
+    if (!this.showTabs) {
+      this.setAttribute('notabs', '');
+    }
    // Tab selection is now handled by the dees-appui-tabs component
    // But we need to ensure the tabs component is ready
    const tabsComponent = this.shadowRoot.querySelector('dees-appui-tabs') as DeesAppuiTabs;
--- a/ts_web/elements/00group-appui/dees-appui-mainmenu/dees-appui-mainmenu.ts
+++ b/ts_web/elements/00group-appui/dees-appui-mainmenu/dees-appui-mainmenu.ts
@@ -13,6 +13,7 @@ import {
 } from '@design.estate/dees-element';
 import { DeesContextmenu } from '../../dees-contextmenu/dees-contextmenu.js';
 import { demoFunc } from './dees-appui-mainmenu.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 /**
 * the most left menu
@@ -37,21 +38,23 @@ export class DeesAppuiMainmenu extends DeesElement {

  // Bottom tabs (pinned to bottom)
  @property({ type: Array })
-  accessor bottomTabs: interfaces.ITab[] = [];
+  accessor bottomTabs: interfaces.IMenuItem[] = [];

  // Legacy tabs property (for backward compatibility)
  @property({ type: Array })
-  accessor tabs: interfaces.ITab[] = [];
+  accessor tabs: interfaces.IMenuItem[] = [];

  @property()
-  accessor selectedTab: interfaces.ITab;
+  accessor selectedTab: interfaces.IMenuItem;

  @property({ type: Boolean, reflect: true })
  accessor collapsed: boolean = false;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        --menu-width-expanded: 200px;
        --menu-width-collapsed: 56px;
@@ -333,6 +336,44 @@ export class DeesAppuiMainmenu extends DeesElement {
        transition-delay: 1s;
      }

+      /* Badge styles */
+      .badge {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        min-width: 18px;
+        height: 18px;
+        padding: 0 6px;
+        font-size: 11px;
+        font-weight: 600;
+        border-radius: 9px;
+        margin-left: auto;
+      }
+
+      .badge.default {
+        background: ${cssManager.bdTheme('#f4f4f5', '#27272a')};
+        color: ${cssManager.bdTheme('#3f3f46', '#a1a1aa')};
+      }
+
+      .badge.success {
+        background: ${cssManager.bdTheme('#dcfce7', '#14532d')};
+        color: ${cssManager.bdTheme('#166534', '#4ade80')};
+      }
+
+      .badge.warning {
+        background: ${cssManager.bdTheme('#fef3c7', '#451a03')};
+        color: ${cssManager.bdTheme('#92400e', '#fbbf24')};
+      }
+
+      .badge.error {
+        background: ${cssManager.bdTheme('#fee2e2', '#450a0a')};
+        color: ${cssManager.bdTheme('#991b1b', '#f87171')};
+      }
+
+      :host([collapsed]) .badge {
+        display: none;
+      }
+
      /* Bottom Section */
      .bottomSection {
        flex-shrink: 0;
@@ -390,7 +431,7 @@ export class DeesAppuiMainmenu extends DeesElement {
        <div class="menuGroup">
          ${group.name ? html`<div class="groupHeader">${group.name}</div>` : ''}
          <div class="groupTabs">
-            ${group.tabs.map((tabArg) => this.renderTab(tabArg))}
+            ${group.items.map((tabArg) => this.renderTab(tabArg))}
          </div>
        </div>
      `)}
@@ -407,7 +448,7 @@ export class DeesAppuiMainmenu extends DeesElement {
    `;
  }

-  private renderTab(tabArg: interfaces.ITab): TemplateResult {
+  private renderTab(tabArg: interfaces.IMenuItem): TemplateResult {
    return html`
      <div
        class="tab ${tabArg === this.selectedTab ? 'selectedTab' : ''}"
@@ -417,20 +458,23 @@ export class DeesAppuiMainmenu extends DeesElement {
      >
        <dees-icon .icon="${tabArg.iconName || ''}"></dees-icon>
        <span class="tabLabel">${tabArg.key}</span>
+        ${tabArg.badge !== undefined ? html`
+          <span class="badge ${tabArg.badgeVariant || 'default'}">${tabArg.badge}</span>
+        ` : ''}
        <span class="tab-tooltip">${tabArg.key}</span>
      </div>
    `;
  }

-  private getAllTabs(): interfaces.ITab[] {
+  private getAllTabs(): interfaces.IMenuItem[] {
    if (this.menuGroups.length > 0) {
-      const groupTabs = this.menuGroups.flatMap(group => group.tabs);
+      const groupTabs = this.menuGroups.flatMap(group => group.items);
      return [...groupTabs, ...this.bottomTabs];
    }
    return [...this.tabs, ...this.bottomTabs];
  }

-  updateTab(tabArg: interfaces.ITab) {
+  updateTab(tabArg: interfaces.IMenuItem) {
    this.selectedTab = tabArg;
    this.selectedTab.action();

--- a/ts_web/elements/00group-appui/dees-appui-profiledropdown/dees-appui-profiledropdown.ts
+++ b/ts_web/elements/00group-appui/dees-appui-profiledropdown/dees-appui-profiledropdown.ts
@@ -11,6 +11,7 @@ import {
  cssManager,
  state,
 } from '@design.estate/dees-element';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-appui-profiledropdown')
 export class DeesAppuiProfileDropdown extends DeesElement {
@@ -53,8 +54,10 @@ export class DeesAppuiProfileDropdown extends DeesElement {
  accessor position: 'top-right' | 'top-left' | 'bottom-right' | 'bottom-left' = 'top-right';

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        position: absolute;
--- a/ts_web/elements/00group-appui/dees-appui-secondarymenu/dees-appui-secondarymenu.demo.ts
+++ b/ts_web/elements/00group-appui/dees-appui-secondarymenu/dees-appui-secondarymenu.demo.ts
@@ -44,7 +44,7 @@ export const demoFunc = () => html`
            { key: 'Integrations', iconName: 'plug', action: () => console.log('Integrations'), badge: 5, badgeVariant: 'error' },
          ]
        }
-      ] as interfaces.ISecondaryMenuGroup[]}
+      ] as interfaces.IMenuGroup[]}
      @item-select=${(e: CustomEvent) => console.log('Selected:', e.detail)}
    ></dees-appui-secondarymenu>
    <div class="spacer"></div>
--- a/ts_web/elements/00group-appui/dees-appui-secondarymenu/dees-appui-secondarymenu.ts
+++ b/ts_web/elements/00group-appui/dees-appui-secondarymenu/dees-appui-secondarymenu.ts
@@ -15,6 +15,7 @@ import {
  cssManager,
 } from '@design.estate/dees-element';
 import { demoFunc } from './dees-appui-secondarymenu.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 /**
 * Secondary navigation menu for sub-navigation within MainMenu views
@@ -32,15 +33,15 @@ export class DeesAppuiSecondarymenu extends DeesElement {

  /** Grouped items with collapse support */
  @property({ type: Array })
-  accessor groups: interfaces.ISecondaryMenuGroup[] = [];
+  accessor groups: interfaces.IMenuGroup[] = [];

  /** Legacy flat list support for backward compatibility */
  @property({ type: Array })
-  accessor selectionOptions: (interfaces.ISelectionOption | { divider: true })[] = [];
+  accessor selectionOptions: (interfaces.IMenuItem | { divider: true })[] = [];

  /** Currently selected item */
  @property({ type: Object })
-  accessor selectedItem: interfaces.ISecondaryMenuItem | null = null;
+  accessor selectedItem: interfaces.IMenuItem | null = null;

  /** Internal state for collapsed groups */
  @state()
@@ -51,8 +52,10 @@ export class DeesAppuiSecondarymenu extends DeesElement {
  accessor collapsed: boolean = false;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        --sidebar-width-expanded: 240px;
        --sidebar-width-collapsed: 56px;
@@ -482,7 +485,7 @@ export class DeesAppuiSecondarymenu extends DeesElement {
    `;
  }

-  private renderMenuItem(item: interfaces.ISecondaryMenuItem, group?: interfaces.ISecondaryMenuGroup): TemplateResult {
+  private renderMenuItem(item: interfaces.IMenuItem, group?: interfaces.IMenuGroup): TemplateResult {
    const isSelected = this.selectedItem?.key === item.key;
    return html`
      <div
@@ -507,7 +510,7 @@ export class DeesAppuiSecondarymenu extends DeesElement {
          if ('divider' in option && option.divider) {
            return html`<div class="divider"></div>`;
          }
-          const item = option as interfaces.ISelectionOption;
+          const item = option as interfaces.IMenuItem;
          return this.renderMenuItem({
            key: item.key,
            iconName: item.iconName,
@@ -537,7 +540,7 @@ export class DeesAppuiSecondarymenu extends DeesElement {
    }));
  }

-  private selectItem(item: interfaces.ISecondaryMenuItem, group?: interfaces.ISecondaryMenuGroup): void {
+  private selectItem(item: interfaces.IMenuItem, group?: interfaces.IMenuGroup): void {
    this.selectedItem = item;
    item.action();

@@ -548,7 +551,7 @@ export class DeesAppuiSecondarymenu extends DeesElement {
    }));
  }

-  private handleContextMenu(event: MouseEvent, item: interfaces.ISecondaryMenuItem): void {
+  private handleContextMenu(event: MouseEvent, item: interfaces.IMenuItem): void {
    DeesContextmenu.openContextMenuWithOptions(event, [
      {
        name: 'View details',
@@ -582,7 +585,7 @@ export class DeesAppuiSecondarymenu extends DeesElement {
      }
    } else if (this.selectionOptions.length > 0) {
      // Legacy mode: select first non-divider option
-      const firstOption = this.selectionOptions.find(opt => !('divider' in opt)) as interfaces.ISelectionOption;
+      const firstOption = this.selectionOptions.find(opt => !('divider' in opt)) as interfaces.IMenuItem;
      if (firstOption && !this.selectedItem) {
        this.selectItem({
          key: firstOption.key,
--- a/ts_web/elements/00group-appui/dees-appui-tabs/dees-appui-tabs.demo.ts
+++ b/ts_web/elements/00group-appui/dees-appui-tabs/dees-appui-tabs.demo.ts
@@ -0,0 +1,306 @@
+import { html, cssManager, css, DeesElement, customElement, state } from '@design.estate/dees-element';
+import * as interfaces from '../../interfaces/index.js';
+import type { DeesAppuiTabs } from './dees-appui-tabs.js';
+
+// Interactive demo component for closeable tabs
+@customElement('demo-closeable-tabs')
+class DemoCloseableTabs extends DeesElement {
+  @state()
+  accessor tabs: interfaces.IMenuItem[] = [
+    { key: 'Main', iconName: 'lucide:home', action: () => console.log('Main clicked') },
+  ];
+
+  @state()
+  accessor tabCounter: number = 0;
+
+  static styles = [
+    css`
+      :host {
+        display: block;
+      }
+      .controls {
+        display: flex;
+        gap: 8px;
+        margin-top: 16px;
+      }
+      button {
+        background: ${cssManager.bdTheme('rgba(59, 130, 246, 0.1)', 'rgba(59, 130, 246, 0.1)')};
+        border: 1px solid ${cssManager.bdTheme('rgba(59, 130, 246, 0.3)', 'rgba(59, 130, 246, 0.3)')};
+        color: ${cssManager.bdTheme('#3b82f6', '#60a5fa')};
+        padding: 8px 16px;
+        border-radius: 6px;
+        cursor: pointer;
+        font-size: 13px;
+        transition: all 0.15s ease;
+      }
+      button:hover {
+        background: ${cssManager.bdTheme('rgba(59, 130, 246, 0.2)', 'rgba(59, 130, 246, 0.2)')};
+      }
+      .info {
+        margin-top: 16px;
+        padding: 12px 16px;
+        background: ${cssManager.bdTheme('rgba(0,0,0,0.02)', 'rgba(255,255,255,0.02)')};
+        border-radius: 6px;
+        font-size: 13px;
+        color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};
+      }
+    `
+  ];
+
+  private addTab() {
+    this.tabCounter++;
+    const tabKey = `Document ${this.tabCounter}`;
+    this.tabs = [
+      ...this.tabs,
+      {
+        key: tabKey,
+        iconName: 'lucide:file',
+        action: () => console.log(`${tabKey} clicked`),
+        closeable: true,
+        onClose: () => this.removeTab(tabKey)
+      }
+    ];
+  }
+
+  private removeTab(tabKey: string) {
+    this.tabs = this.tabs.filter(t => t.key !== tabKey);
+  }
+
+  render() {
+    return html`
+      <dees-appui-tabs
+        .tabs=${this.tabs}
+        @tab-close=${(e: CustomEvent) => this.removeTab(e.detail.tab.key)}
+      ></dees-appui-tabs>
+      <div class="controls">
+        <button @click=${() => this.addTab()}>+ Add New Tab</button>
+      </div>
+      <div class="info">
+        Click the X button on tabs to close them. The "Main" tab is not closeable.
+        <br>Current tabs: ${this.tabs.length}
+      </div>
+    `;
+  }
+}
+
+// Interactive demo for auto-hide feature
+@customElement('demo-autohide-tabs')
+class DemoAutoHideTabs extends DeesElement {
+  @state()
+  accessor tabs: interfaces.IMenuItem[] = [
+    { key: 'Tab 1', iconName: 'lucide:file', action: () => console.log('Tab 1') },
+    { key: 'Tab 2', iconName: 'lucide:file', action: () => console.log('Tab 2') },
+  ];
+
+  @state()
+  accessor autoHide: boolean = true;
+
+  @state()
+  accessor threshold: number = 1;
+
+  static styles = [
+    css`
+      :host {
+        display: block;
+      }
+      .tabs-container {
+        min-height: 60px;
+        border: 1px dashed ${cssManager.bdTheme('#e5e7eb', '#27272a')};
+        border-radius: 6px;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+      }
+      .tabs-container dees-appui-tabs {
+        width: 100%;
+      }
+      .placeholder {
+        color: ${cssManager.bdTheme('#a1a1aa', '#71717a')};
+        font-size: 13px;
+        font-style: italic;
+      }
+      .controls {
+        display: flex;
+        gap: 8px;
+        margin-top: 16px;
+        flex-wrap: wrap;
+      }
+      button {
+        background: ${cssManager.bdTheme('rgba(59, 130, 246, 0.1)', 'rgba(59, 130, 246, 0.1)')};
+        border: 1px solid ${cssManager.bdTheme('rgba(59, 130, 246, 0.3)', 'rgba(59, 130, 246, 0.3)')};
+        color: ${cssManager.bdTheme('#3b82f6', '#60a5fa')};
+        padding: 8px 16px;
+        border-radius: 6px;
+        cursor: pointer;
+        font-size: 13px;
+        transition: all 0.15s ease;
+      }
+      button:hover {
+        background: ${cssManager.bdTheme('rgba(59, 130, 246, 0.2)', 'rgba(59, 130, 246, 0.2)')};
+      }
+      button.danger {
+        background: ${cssManager.bdTheme('rgba(239, 68, 68, 0.1)', 'rgba(239, 68, 68, 0.1)')};
+        border-color: ${cssManager.bdTheme('rgba(239, 68, 68, 0.3)', 'rgba(239, 68, 68, 0.3)')};
+        color: ${cssManager.bdTheme('#ef4444', '#f87171')};
+      }
+      button.danger:hover {
+        background: ${cssManager.bdTheme('rgba(239, 68, 68, 0.2)', 'rgba(239, 68, 68, 0.2)')};
+      }
+      .info {
+        margin-top: 16px;
+        padding: 12px 16px;
+        background: ${cssManager.bdTheme('rgba(0,0,0,0.02)', 'rgba(255,255,255,0.02)')};
+        border-radius: 6px;
+        font-size: 13px;
+        color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};
+      }
+    `
+  ];
+
+  private tabCounter = 2;
+
+  private addTab() {
+    this.tabCounter++;
+    this.tabs = [...this.tabs, {
+      key: `Tab ${this.tabCounter}`,
+      iconName: 'lucide:file',
+      action: () => console.log(`Tab ${this.tabCounter}`)
+    }];
+  }
+
+  private removeLastTab() {
+    if (this.tabs.length > 0) {
+      this.tabs = this.tabs.slice(0, -1);
+    }
+  }
+
+  private clearTabs() {
+    this.tabs = [];
+  }
+
+  render() {
+    const shouldHide = this.autoHide && this.tabs.length <= this.threshold;
+
+    return html`
+      <div class="tabs-container">
+        ${shouldHide
+          ? html`<span class="placeholder">Tabs hidden (${this.tabs.length} tabs ≤ threshold ${this.threshold})</span>`
+          : html`<dees-appui-tabs
+              .tabs=${this.tabs}
+              .autoHide=${this.autoHide}
+              .autoHideThreshold=${this.threshold}
+            ></dees-appui-tabs>`
+        }
+      </div>
+      <div class="controls">
+        <button @click=${() => this.addTab()}>+ Add Tab</button>
+        <button class="danger" @click=${() => this.removeLastTab()}>- Remove Tab</button>
+        <button class="danger" @click=${() => this.clearTabs()}>Clear All</button>
+        <button @click=${() => { this.threshold = 0; }}>Threshold: 0</button>
+        <button @click=${() => { this.threshold = 1; }}>Threshold: 1</button>
+        <button @click=${() => { this.threshold = 2; }}>Threshold: 2</button>
+      </div>
+      <div class="info">
+        Auto-hide: ${this.autoHide ? 'ON' : 'OFF'} | Threshold: ${this.threshold} | Tabs: ${this.tabs.length}
+        <br>Tabs will hide when count ≤ threshold.
+      </div>
+    `;
+  }
+}
+
+export const demoFunc = () => {
+  const horizontalTabs: interfaces.IMenuItem[] = [
+    { key: 'Home', iconName: 'lucide:home', action: () => console.log('Home clicked') },
+    { key: 'Analytics Dashboard', iconName: 'lucide:lineChart', action: () => console.log('Analytics clicked') },
+    { key: 'Reports', iconName: 'lucide:fileText', action: () => console.log('Reports clicked') },
+    { key: 'User Settings', iconName: 'lucide:settings', action: () => console.log('Settings clicked') },
+    { key: 'Help', iconName: 'lucide:helpCircle', action: () => console.log('Help clicked') },
+  ];
+
+  const verticalTabs: interfaces.IMenuItem[] = [
+    { key: 'Profile', iconName: 'lucide:user', action: () => console.log('Profile clicked') },
+    { key: 'Security', iconName: 'lucide:shield', action: () => console.log('Security clicked') },
+    { key: 'Notifications', iconName: 'lucide:bell', action: () => console.log('Notifications clicked') },
+    { key: 'Integrations', iconName: 'lucide:link', action: () => console.log('Integrations clicked') },
+    { key: 'Advanced', iconName: 'lucide:code', action: () => console.log('Advanced clicked') },
+  ];
+
+  const noIndicatorTabs: interfaces.IMenuItem[] = [
+    { key: 'All', action: () => console.log('All clicked') },
+    { key: 'Active', action: () => console.log('Active clicked') },
+    { key: 'Completed', action: () => console.log('Completed clicked') },
+    { key: 'Archived', action: () => console.log('Archived clicked') },
+  ];
+
+  const demoContent = (text: string) => html`
+    <div style="padding: 24px; color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};">
+      ${text}
+    </div>
+  `;
+
+  return html`
+    <style>
+      .demo-container {
+        display: flex;
+        flex-direction: column;
+        gap: 32px;
+        padding: 48px;
+        background: ${cssManager.bdTheme('#f8f9fa', '#0a0a0a')};
+        min-height: 100vh;
+      }
+
+      .section {
+        background: ${cssManager.bdTheme('#ffffff', '#18181b')};
+        border: 1px solid ${cssManager.bdTheme('#e5e7eb', '#27272a')};
+        border-radius: 8px;
+        padding: 24px;
+        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+      }
+
+      .section-title {
+        font-size: 18px;
+        font-weight: 600;
+        margin-bottom: 16px;
+        color: ${cssManager.bdTheme('#09090b', '#fafafa')};
+      }
+
+      .two-column {
+        display: grid;
+        grid-template-columns: 200px 1fr;
+        gap: 24px;
+        align-items: start;
+      }
+    </style>
+    <div class="demo-container">
+      <div class="section">
+        <div class="section-title">Horizontal Tabs with Animated Indicator</div>
+        <dees-appui-tabs .tabs=${horizontalTabs}></dees-appui-tabs>
+        ${demoContent('Select a tab to see the smooth sliding animation of the indicator. The indicator automatically adjusts its width to match the tab content with minimal padding.')}
+      </div>
+
+      <div class="section">
+        <div class="section-title">Closeable Tabs (Browser-style)</div>
+        <demo-closeable-tabs></demo-closeable-tabs>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Auto-hide Tabs</div>
+        <demo-autohide-tabs></demo-autohide-tabs>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Vertical Tabs Layout</div>
+        <div class="two-column">
+          <dees-appui-tabs .tabStyle=${'vertical'} .tabs=${verticalTabs}></dees-appui-tabs>
+          ${demoContent('Vertical tabs work great for settings pages and navigation menus. The animated indicator smoothly transitions between selections.')}
+        </div>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Without Indicator</div>
+        <dees-appui-tabs .showTabIndicator=${false} .tabs=${noIndicatorTabs}></dees-appui-tabs>
+        ${demoContent('Tabs can also be used without the animated indicator by setting showTabIndicator to false.')}
+      </div>
+    </div>
+  `;
+};
--- a/ts_web/elements/00group-appui/dees-appui-tabs/dees-appui-tabs.ts
+++ b/ts_web/elements/00group-appui/dees-appui-tabs/dees-appui-tabs.ts
@@ -4,6 +4,7 @@ import {
  DeesElement,
  type TemplateResult,
  property,
+  state,
  customElement,
  html,
  css,
@@ -11,106 +12,21 @@ import {
 } from '@design.estate/dees-element';

 import * as domtools from '@design.estate/dees-domtools';
+import { demoFunc } from './dees-appui-tabs.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-appui-tabs')
 export class DeesAppuiTabs extends DeesElement {
-  public static demo = () => {
-    const horizontalTabs: interfaces.ITab[] = [
-      { key: 'Home', iconName: 'lucide:home', action: () => console.log('Home clicked') },
-      { key: 'Analytics Dashboard', iconName: 'lucide:lineChart', action: () => console.log('Analytics clicked') },
-      { key: 'Reports', iconName: 'lucide:fileText', action: () => console.log('Reports clicked') },
-      { key: 'User Settings', iconName: 'lucide:settings', action: () => console.log('Settings clicked') },
-      { key: 'Help', iconName: 'lucide:helpCircle', action: () => console.log('Help clicked') },
-    ];
-
-    const verticalTabs: interfaces.ITab[] = [
-      { key: 'Profile', iconName: 'lucide:user', action: () => console.log('Profile clicked') },
-      { key: 'Security', iconName: 'lucide:shield', action: () => console.log('Security clicked') },
-      { key: 'Notifications', iconName: 'lucide:bell', action: () => console.log('Notifications clicked') },
-      { key: 'Integrations', iconName: 'lucide:link', action: () => console.log('Integrations clicked') },
-      { key: 'Advanced', iconName: 'lucide:code', action: () => console.log('Advanced clicked') },
-    ];
-
-    const noIndicatorTabs: interfaces.ITab[] = [
-      { key: 'All', action: () => console.log('All clicked') },
-      { key: 'Active', action: () => console.log('Active clicked') },
-      { key: 'Completed', action: () => console.log('Completed clicked') },
-      { key: 'Archived', action: () => console.log('Archived clicked') },
-    ];
-
-    const demoContent = (text: string) => html`
-      <div style="padding: 24px; color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};">
-        ${text}
-      </div>
-    `;
-
-    return html`
-      <style>
-        .demo-container {
-          display: flex;
-          flex-direction: column;
-          gap: 32px;
-          padding: 48px;
-          background: ${cssManager.bdTheme('#f8f9fa', '#0a0a0a')};
-          min-height: 100vh;
-        }
-        
-        .section {
-          background: ${cssManager.bdTheme('#ffffff', '#18181b')};
-          border: 1px solid ${cssManager.bdTheme('#e5e7eb', '#27272a')};
-          border-radius: 8px;
-          padding: 24px;
-          box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
-        }
-        
-        .section-title {
-          font-size: 18px;
-          font-weight: 600;
-          margin-bottom: 16px;
-          color: ${cssManager.bdTheme('#09090b', '#fafafa')};
-        }
-        
-        .two-column {
-          display: grid;
-          grid-template-columns: 200px 1fr;
-          gap: 24px;
-          align-items: start;
-        }
-      </style>
-      <div class="demo-container">
-        <div class="section">
-          <div class="section-title">Horizontal Tabs with Animated Indicator</div>
-          <dees-appui-tabs .tabs=${horizontalTabs}>
-            ${demoContent('Select a tab to see the smooth sliding animation of the indicator. The indicator automatically adjusts its width to match the tab content with minimal padding.')}
-          </dees-appui-tabs>
-        </div>
-        
-        <div class="section">
-          <div class="section-title">Vertical Tabs Layout</div>
-          <div class="two-column">
-            <dees-appui-tabs .tabStyle=${'vertical'} .tabs=${verticalTabs}></dees-appui-tabs>
-            ${demoContent('Vertical tabs work great for settings pages and navigation menus. The animated indicator smoothly transitions between selections.')}
-          </div>
-        </div>
-        
-        <div class="section">
-          <div class="section-title">Without Indicator</div>
-          <dees-appui-tabs .showTabIndicator=${false} .tabs=${noIndicatorTabs}>
-            ${demoContent('Tabs can also be used without the animated indicator by setting showTabIndicator to false.')}
-          </dees-appui-tabs>
-        </div>
-      </div>
-    `;
-  };
+  public static demo = demoFunc;

  // INSTANCE
  @property({
    type: Array,
  })
-  accessor tabs: interfaces.ITab[] = [];
+  accessor tabs: interfaces.IMenuItem[] = [];

  @property({ type: Object })
-  accessor selectedTab: interfaces.ITab | null = null;
+  accessor selectedTab: interfaces.IMenuItem | null = null;

  @property({ type: Boolean })
  accessor showTabIndicator: boolean = true;
@@ -118,28 +34,80 @@ export class DeesAppuiTabs extends DeesElement {
  @property({ type: String })
  accessor tabStyle: 'horizontal' | 'vertical' = 'horizontal';

+  @property({ type: Boolean })
+  accessor autoHide: boolean = false;
+
+  @property({ type: Number })
+  accessor autoHideThreshold: number = 0;
+
+  // Scroll state for fade indicators
+  @state()
+  private accessor canScrollLeft: boolean = false;
+
+  @state()
+  private accessor canScrollRight: boolean = false;
+
+  private resizeObserver: ResizeObserver | null = null;
+
  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        position: relative;
        width: 100%;
+        min-width: 0;
+        overflow: hidden;
      }

      .tabs-wrapper {
        position: relative;
+        min-width: 0;
      }

      .tabs-wrapper.horizontal-wrapper {
        height: 48px;
        border-bottom: 1px solid ${cssManager.bdTheme('#e5e7eb', '#27272a')};
        box-sizing: border-box;
+        overflow: hidden;
+      }
+
+      /* Scroll fade indicators */
+      .scroll-fade {
+        position: absolute;
+        top: 0;
+        bottom: 1px;
+        width: 48px;
+        pointer-events: none;
+        opacity: 0;
+        transition: opacity 0.2s ease;
+        z-index: 10;
+      }
+
+      .scroll-fade-left {
+        left: 0;
+        background: linear-gradient(to right,
+          ${cssManager.bdTheme('#ffffff', '#161616')} 0%,
+          ${cssManager.bdTheme('rgba(255,255,255,0)', 'rgba(22,22,22,0)')} 100%);
+      }
+
+      .scroll-fade-right {
+        right: 0;
+        background: linear-gradient(to left,
+          ${cssManager.bdTheme('#ffffff', '#161616')} 0%,
+          ${cssManager.bdTheme('rgba(255,255,255,0)', 'rgba(22,22,22,0)')} 100%);
+      }
+
+      .scroll-fade.visible {
+        opacity: 1;
      }

      .tabsContainer {
        position: relative;
        user-select: none;
+        min-width: 0;
      }

      .tabsContainer.horizontal {
@@ -147,14 +115,39 @@ export class DeesAppuiTabs extends DeesElement {
        align-items: center;
        font-size: 14px;
        overflow-x: auto;
-        scrollbar-width: none;
+        overflow-y: hidden;
+        scrollbar-width: thin;
+        scrollbar-color: transparent transparent;
        height: 100%;
        padding: 0 16px;
        gap: 4px;
      }

+      /* Show scrollbar on hover */
+      .tabs-wrapper:hover .tabsContainer.horizontal {
+        scrollbar-color: ${cssManager.bdTheme('rgba(0,0,0,0.2)', 'rgba(255,255,255,0.2)')} transparent;
+      }
+
      .tabsContainer.horizontal::-webkit-scrollbar {
-        display: none;
+        height: 4px;
+      }
+
+      .tabsContainer.horizontal::-webkit-scrollbar-track {
+        background: transparent;
+      }
+
+      .tabsContainer.horizontal::-webkit-scrollbar-thumb {
+        background: transparent;
+        border-radius: 2px;
+        transition: background 0.2s ease;
+      }
+
+      .tabs-wrapper:hover .tabsContainer.horizontal::-webkit-scrollbar-thumb {
+        background: ${cssManager.bdTheme('rgba(0,0,0,0.2)', 'rgba(255,255,255,0.2)')};
+      }
+
+      .tabs-wrapper:hover .tabsContainer.horizontal::-webkit-scrollbar-thumb:hover {
+        background: ${cssManager.bdTheme('rgba(0,0,0,0.35)', 'rgba(255,255,255,0.35)')};
      }

      .tabsContainer.vertical {
@@ -282,18 +275,51 @@ export class DeesAppuiTabs extends DeesElement {
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
      }

-      .content {
-        padding: 32px 24px;
+      /* Close button */
+      .tab-close {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        width: 16px;
+        height: 16px;
+        border-radius: 4px;
+        margin-left: 8px;
+        opacity: 0.4;
+        transition: opacity 0.15s, background 0.15s;
+        color: ${cssManager.bdTheme('#71717a', '#71717a')};
+      }
+
+      .tab:hover .tab-close {
+        opacity: 0.7;
+      }
+
+      .tab-close:hover {
+        opacity: 1;
+        background: ${cssManager.bdTheme('rgba(0,0,0,0.1)', 'rgba(255,255,255,0.1)')};
+        color: ${cssManager.bdTheme('#ef4444', '#f87171')};
+      }
+
+      .tab.selectedTab .tab-close {
+        opacity: 0.5;
+      }
+
+      .tab.selectedTab:hover .tab-close {
+        opacity: 0.8;
+      }
+
+      .tab.selectedTab .tab-close:hover {
+        opacity: 1;
      }
    `,
  ];

  public render(): TemplateResult {
+    // Auto-hide when enabled and tab count is at or below threshold
+    if (this.autoHide && this.tabs.length <= this.autoHideThreshold) {
+      return html``;
+    }
    return html`
      ${this.renderTabsWrapper()}
-      <div class="content">
-        <slot></slot>
-      </div>
    `;
  }

@@ -302,6 +328,19 @@ export class DeesAppuiTabs extends DeesElement {
    const wrapperClass = isHorizontal ? 'tabs-wrapper horizontal-wrapper' : 'vertical-wrapper';
    const containerClass = `tabsContainer ${this.tabStyle}`;

+    if (isHorizontal) {
+      return html`
+        <div class="${wrapperClass}">
+          <div class="scroll-fade scroll-fade-left ${this.canScrollLeft ? 'visible' : ''}"></div>
+          <div class="${containerClass}" @scroll=${this.handleScroll}>
+            ${this.tabs.map(tab => this.renderTab(tab, isHorizontal))}
+          </div>
+          <div class="scroll-fade scroll-fade-right ${this.canScrollRight ? 'visible' : ''}"></div>
+          ${this.showTabIndicator ? html`<div class="tabIndicator"></div>` : ''}
+        </div>
+      `;
+    }
+
    return html`
      <div class="${wrapperClass}">
        <div class="${containerClass}">
@@ -312,18 +351,26 @@ export class DeesAppuiTabs extends DeesElement {
    `;
  }

-  private renderTab(tab: interfaces.ITab, isHorizontal: boolean): TemplateResult {
+  private renderTab(tab: interfaces.IMenuItem, isHorizontal: boolean): TemplateResult {
    const isSelected = tab === this.selectedTab;
    const classes = `tab ${isSelected ? 'selectedTab' : ''}`;
-    
+
+    const closeButton = tab.closeable ? html`
+      <span class="tab-close" @click="${(e: Event) => this.closeTab(e, tab)}">
+        <dees-icon .icon=${'lucide:x'} style="font-size: 12px;"></dees-icon>
+      </span>
+    ` : '';
+
    const content = isHorizontal ? html`
      <span class="tab-content">
        ${this.renderTabIcon(tab)}
        ${tab.key}
      </span>
+      ${closeButton}
    ` : html`
      ${this.renderTabIcon(tab)}
      ${tab.key}
+      ${closeButton}
    `;

    return html`
@@ -336,14 +383,19 @@ export class DeesAppuiTabs extends DeesElement {
    `;
  }

-  private renderTabIcon(tab: interfaces.ITab): TemplateResult | '' {
+  private renderTabIcon(tab: interfaces.IMenuItem): TemplateResult | '' {
    return tab.iconName ? html`<dees-icon .icon=${tab.iconName}></dees-icon>` : '';
  }

-  private selectTab(tabArg: interfaces.ITab) {
+  private selectTab(tabArg: interfaces.IMenuItem) {
    this.selectedTab = tabArg;
    tabArg.action();
-    
+
+    // Scroll selected tab into view
+    requestAnimationFrame(() => {
+      this.scrollTabIntoView(tabArg);
+    });
+
    // Emit tab-select event
    this.dispatchEvent(new CustomEvent('tab-select', {
      detail: { tab: tabArg },
@@ -352,19 +404,107 @@ export class DeesAppuiTabs extends DeesElement {
    }));
  }

+  private closeTab(e: Event, tab: interfaces.IMenuItem) {
+    e.stopPropagation();  // Don't select tab when closing
+
+    // Call the tab's onClose callback if defined
+    if (tab.onClose) {
+      tab.onClose();
+    }
+
+    // Also emit event for parent components
+    this.dispatchEvent(new CustomEvent('tab-close', {
+      detail: { tab },
+      bubbles: true,
+      composed: true
+    }));
+  }
+
  firstUpdated() {
    if (this.tabs && this.tabs.length > 0) {
      this.selectTab(this.tabs[0]);
    }
+
+    // Set up ResizeObserver for scroll state updates
+    this.setupResizeObserver();
+
+    // Initial scroll state check
+    requestAnimationFrame(() => {
+      this.updateScrollState();
+    });
+  }
+
+  async disconnectedCallback() {
+    await super.disconnectedCallback();
+    if (this.resizeObserver) {
+      this.resizeObserver.disconnect();
+      this.resizeObserver = null;
+    }
+  }
+
+  private setupResizeObserver() {
+    if (this.tabStyle !== 'horizontal') return;
+
+    this.resizeObserver = new ResizeObserver(() => {
+      this.updateScrollState();
+    });
+
+    const container = this.shadowRoot?.querySelector('.tabsContainer.horizontal');
+    if (container) {
+      this.resizeObserver.observe(container);
+    }
+  }
+
+  private handleScroll = () => {
+    this.updateScrollState();
+  };
+
+  private updateScrollState() {
+    const container = this.shadowRoot?.querySelector('.tabsContainer.horizontal') as HTMLElement;
+    if (!container) return;
+
+    const scrollLeft = container.scrollLeft;
+    const scrollWidth = container.scrollWidth;
+    const clientWidth = container.clientWidth;
+
+    // Small threshold to account for rounding
+    const threshold = 2;
+
+    this.canScrollLeft = scrollLeft > threshold;
+    this.canScrollRight = scrollLeft < scrollWidth - clientWidth - threshold;
+  }
+
+  private scrollTabIntoView(tab: interfaces.IMenuItem) {
+    if (this.tabStyle !== 'horizontal') return;
+
+    const tabIndex = this.tabs.indexOf(tab);
+    if (tabIndex === -1) return;
+
+    const container = this.shadowRoot?.querySelector('.tabsContainer.horizontal') as HTMLElement;
+    const tabElement = container?.querySelector(`.tab:nth-child(${tabIndex + 1})`) as HTMLElement;
+
+    if (tabElement && container) {
+      const containerRect = container.getBoundingClientRect();
+      const tabRect = tabElement.getBoundingClientRect();
+
+      // Check if tab is fully visible
+      const isFullyVisible =
+        tabRect.left >= containerRect.left &&
+        tabRect.right <= containerRect.right;
+
+      if (!isFullyVisible) {
+        tabElement.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'nearest' });
+      }
+    }
  }

  async updated(changedProperties: Map<string, any>) {
    super.updated(changedProperties);
-    
+
    if (changedProperties.has('tabs') && this.tabs && this.tabs.length > 0 && !this.selectedTab) {
      this.selectTab(this.tabs[0]);
    }
-    
+
    if (changedProperties.has('selectedTab') || changedProperties.has('tabs')) {
      await this.updateComplete;
      // Wait for fonts to load on first update
@@ -373,6 +513,7 @@ export class DeesAppuiTabs extends DeesElement {
      }
      requestAnimationFrame(() => {
        this.updateTabIndicator();
+        this.updateScrollState();
      });
    }
  }
--- a/ts_web/elements/00group-appui/dees-appui-view/dees-appui-view.ts
+++ b/ts_web/elements/00group-appui/dees-appui-view/dees-appui-view.ts
@@ -1,192 +0,0 @@
-import * as interfaces from '../../interfaces/index.js';
-
-import {
-  DeesElement,
-  type TemplateResult,
-  property,
-  customElement,
-  html,
-  css,
-  cssManager,
-  state,
-} from '@design.estate/dees-element';
-
-import '../dees-appui-tabs/dees-appui-tabs.js';
-import type { DeesAppuiTabs } from '../dees-appui-tabs/dees-appui-tabs.js';
-
-export interface IAppViewTab extends interfaces.ITab {
-  content?: TemplateResult | (() => TemplateResult);
-}
-
-export interface IAppView {
-  id: string;
-  name: string;
-  description?: string;
-  iconName?: string;
-  tabs: IAppViewTab[];
-  menuItems?: interfaces.ISelectionOption[];
-}
-
-@customElement('dees-appui-view')
-export class DeesAppuiView extends DeesElement {
-  public static demo = () => html`
-    <dees-appui-view
-      .viewConfig=${{
-        id: 'demo-view',
-        name: 'Demo View',
-        description: 'A demonstration view',
-        iconName: 'lucide:home',
-        tabs: [
-          {
-            key: 'overview',
-            iconName: 'lucide:lineChart',
-            action: () => console.log('Overview tab'),
-            content: html`<div style="padding: 20px;">Overview Content</div>`
-          },
-          {
-            key: 'details',
-            iconName: 'lucide:fileText',
-            action: () => console.log('Details tab'),
-            content: html`<div style="padding: 20px;">Details Content</div>`
-          }
-        ],
-        menuItems: [
-          { key: 'General', action: () => console.log('General') },
-          { key: 'Advanced', action: () => console.log('Advanced') },
-        ]
-      }}
-    ></dees-appui-view>
-  `;
-
-  // INSTANCE
-  @property({ type: Object })
-  accessor viewConfig: IAppView;
-
-  @state()
-  accessor selectedTab: IAppViewTab | null = null;
-
-  @state()
-  accessor tabs: DeesAppuiTabs;
-
-  public static styles = [
-    cssManager.defaultStyles,
-    css`
-      :host {
-        display: block;
-        position: relative;
-        width: 100%;
-        height: 100%;
-        background: #161616;
-      }
-
-      .view-container {
-        position: relative;
-        width: 100%;
-        height: 100%;
-        display: flex;
-        flex-direction: column;
-      }
-
-      .view-header {
-        background: #000000;
-        border-bottom: 1px solid #333;
-        flex-shrink: 0;
-      }
-
-      .view-content {
-        flex: 1;
-        position: relative;
-        overflow: hidden;
-      }
-
-      .tab-content {
-        position: absolute;
-        top: 0;
-        left: 0;
-        right: 0;
-        bottom: 0;
-        overflow: auto;
-        opacity: 0;
-        transition: opacity 0.2s;
-      }
-
-      .tab-content.active {
-        opacity: 1;
-      }
-
-      dees-appui-tabs {
-        height: 60px;
-      }
-    `,
-  ];
-
-  public render(): TemplateResult {
-    if (!this.viewConfig) {
-      return html`<div>No view configuration provided</div>`;
-    }
-
-    return html`
-      <div class="view-container">
-        <div class="view-header">
-          <dees-appui-tabs
-            .tabs=${this.viewConfig.tabs}
-            .selectedTab=${this.selectedTab}
-            @tab-select=${(e: CustomEvent) => this.handleTabSelect(e)}
-          ></dees-appui-tabs>
-        </div>
-        <div class="view-content">
-          ${this.viewConfig.tabs.map((tab) => {
-            const isActive = tab === this.selectedTab;
-            const content = typeof tab.content === 'function' ? tab.content() : tab.content;
-            return html`
-              <div class="tab-content ${isActive ? 'active' : ''}">
-                ${content || html`<slot name="${tab.key}"></slot>`}
-              </div>
-            `;
-          })}
-        </div>
-      </div>
-    `;
-  }
-
-  async firstUpdated() {
-    this.tabs = this.shadowRoot.querySelector('dees-appui-tabs');
-    
-    if (this.viewConfig?.tabs?.length > 0) {
-      this.selectedTab = this.viewConfig.tabs[0];
-    }
-  }
-
-  private handleTabSelect(e: CustomEvent) {
-    this.selectedTab = e.detail.tab;
-    
-    // Re-emit the event with view context
-    this.dispatchEvent(new CustomEvent('view-tab-select', {
-      detail: {
-        view: this.viewConfig,
-        tab: e.detail.tab
-      },
-      bubbles: true,
-      composed: true
-    }));
-  }
-
-  // Public methods for external control
-  public selectTab(tabKey: string) {
-    const tab = this.viewConfig.tabs.find(t => t.key === tabKey);
-    if (tab) {
-      this.selectedTab = tab;
-      if (this.tabs) {
-        this.tabs.selectedTab = tab;
-      }
-    }
-  }
-
-  public getMenuItems(): interfaces.ISelectionOption[] {
-    return this.viewConfig?.menuItems || [];
-  }
-
-  public getTabs(): IAppViewTab[] {
-    return this.viewConfig?.tabs || [];
-  }
-}
--- a/ts_web/elements/00group-appui/dees-appui-view/index.ts
+++ b/ts_web/elements/00group-appui/dees-appui-view/index.ts
@@ -1 +0,0 @@
-export * from './dees-appui-view.js';
--- a/ts_web/elements/00group-appui/index.ts
+++ b/ts_web/elements/00group-appui/index.ts
@@ -7,4 +7,3 @@ export * from './dees-appui-mainmenu/index.js';
 export * from './dees-appui-secondarymenu/index.js';
 export * from './dees-appui-profiledropdown/index.js';
 export * from './dees-appui-tabs/index.js';
-export * from './dees-appui-view/index.js';
--- a/ts_web/elements/00group-button/dees-button-group/dees-button-group.ts
+++ b/ts_web/elements/00group-button/dees-button-group/dees-button-group.ts
@@ -10,6 +10,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-button-group.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -33,8 +34,10 @@ export class DeesButtonGroup extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: inline-block;
      }
--- a/ts_web/elements/00group-button/dees-button/dees-button.ts
+++ b/ts_web/elements/00group-button/dees-button/dees-button.ts
@@ -12,6 +12,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-button.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -79,8 +80,10 @@ export class DeesButton extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: inline-block;
        box-sizing: border-box;
--- a/ts_web/elements/00group-chart/dees-chart-log/dees-chart-log.ts
+++ b/ts_web/elements/00group-chart/dees-chart-log/dees-chart-log.ts
@@ -10,6 +10,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-chart-log.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';


 declare global {
@@ -50,8 +51,10 @@ export class DeesChartLog extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        font-family: 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
        color: ${cssManager.bdTheme('hsl(0 0% 3.9%)', 'hsl(0 0% 98%)')};
--- a/ts_web/elements/00group-dataview/dees-dataview-statusobject/dees-dataview-statusobject.ts
+++ b/ts_web/elements/00group-dataview/dees-dataview-statusobject/dees-dataview-statusobject.ts
@@ -16,6 +16,7 @@ import {

 import * as tsclass from '@tsclass/tsclass';
 import { DeesContextmenu } from '../../dees-contextmenu/dees-contextmenu.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -30,8 +31,10 @@ export class DeesDataviewStatusobject extends DeesElement {
  @property({ type: Object }) accessor statusObject: tsclass.code.IStatusObject;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
      }
--- a/ts_web/elements/00group-editor/dees-editor-markdown/dees-editor-markdown.ts
+++ b/ts_web/elements/00group-editor/dees-editor-markdown/dees-editor-markdown.ts
@@ -8,6 +8,7 @@ import {
  cssManager,
  domtools
 } from '@design.estate/dees-element';
+import { themeDefaultStyles } from '../../00theme.js';

 const deferred = domtools.plugins.smartpromise.defer();

@@ -22,8 +23,10 @@ export class DeesEditorMarkdown extends DeesElement {
  public static demo = () => html`<dees-editormarkdown></dees-editormarkdown>`;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      .gridcontainer {
        position: absolute;
        height: 100%;
--- a/ts_web/elements/00group-editor/dees-editor/dees-editor.ts
+++ b/ts_web/elements/00group-editor/dees-editor/dees-editor.ts
@@ -9,6 +9,7 @@ import {
 } from '@design.estate/dees-element';
 import * as domtools from '@design.estate/dees-domtools';
 import { MONACO_VERSION } from './version.js';
+import { themeDefaultStyles } from '../../00theme.js';

 import type * as monaco from 'monaco-editor';

@@ -51,8 +52,10 @@ export class DeesEditor extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
      }

--- a/ts_web/elements/00group-form/dees-form-submit/dees-form-submit.ts
+++ b/ts_web/elements/00group-form/dees-form-submit/dees-form-submit.ts
@@ -8,6 +8,7 @@ import {
  property,
 } from '@design.estate/dees-element';
 import type { DeesForm } from '../dees-form/dees-form.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -39,7 +40,9 @@ export class DeesFormSubmit extends DeesElement {
    super();
  }
  
-  public static styles = [cssManager.defaultStyles, css``];
+  public static styles = [themeDefaultStyles, cssManager.defaultStyles, css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
+    `];

  public render() {
    return html`
--- a/ts_web/elements/00group-input/dees-input-checkbox/dees-input-checkbox.ts
+++ b/ts_web/elements/00group-input/dees-input-checkbox/dees-input-checkbox.ts
@@ -9,6 +9,7 @@ import {
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import { demoFunc } from './dees-input-checkbox.demo.js';
 import { cssGeistFontFamily } from '../../00fonts.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -38,9 +39,11 @@ export class DeesInputCheckbox extends DeesInputBase<DeesInputCheckbox> {
  }

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+        /* TODO: Migrate hardcoded values to --dees-* CSS variables */
        * {
          box-sizing: border-box;
        }
--- a/ts_web/elements/00group-input/dees-input-dropdown/dees-input-dropdown.ts
+++ b/ts_web/elements/00group-input/dees-input-dropdown/dees-input-dropdown.ts
@@ -11,6 +11,7 @@ import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-input-dropdown.demo.js';
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import { cssGeistFontFamily } from '../../00fonts.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -60,9 +61,11 @@ export class DeesInputDropdown extends DeesInputBase<DeesInputDropdown> {
  accessor searchValue: string = '';

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      * {
        box-sizing: border-box;
      }
--- a/ts_web/elements/00group-input/dees-input-iban/dees-input-iban.ts
+++ b/ts_web/elements/00group-input/dees-input-iban/dees-input-iban.ts
@@ -11,6 +11,7 @@ import * as domtools from '@design.estate/dees-domtools';
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import * as ibantools from 'ibantools';
 import { demoFunc } from './dees-input-iban.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-input-iban')
 export class DeesInputIban extends DeesInputBase<DeesInputIban> {
@@ -30,9 +31,11 @@ export class DeesInputIban extends DeesInputBase<DeesInputIban> {
  accessor value = '';

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      /* IBAN input specific styles can go here */
    `,
  ];
--- a/ts_web/elements/00group-input/dees-input-list/dees-input-list.ts
+++ b/ts_web/elements/00group-input/dees-input-list/dees-input-list.ts
@@ -11,6 +11,7 @@ import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import '../../dees-icon/dees-icon.js';
 import '../../00group-button/dees-button/dees-button.js';
 import { demoFunc } from './dees-input-list.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -64,9 +65,11 @@ export class DeesInputList extends DeesInputBase<DeesInputList> {
  accessor dragOverIndex: number = -1;

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
--- a/ts_web/elements/00group-input/dees-input-multitoggle/dees-input-multitoggle.ts
+++ b/ts_web/elements/00group-input/dees-input-multitoggle/dees-input-multitoggle.ts
@@ -11,6 +11,7 @@ import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import * as colors from '../../00colors.js'

 import { demoFunc } from './dees-input-multitoggle.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -67,9 +68,11 @@ export class DeesInputMultitoggle extends DeesInputBase<DeesInputMultitoggle> {
  }

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('#09090b', '#fafafa')};
        user-select: none;
--- a/ts_web/elements/00group-input/dees-input-phone/dees-input-phone.ts
+++ b/ts_web/elements/00group-input/dees-input-phone/dees-input-phone.ts
@@ -10,6 +10,7 @@ import {
 import * as domtools from '@design.estate/dees-domtools';
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import { demoFunc } from './dees-input-phone.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -33,9 +34,11 @@ export class DeesInputPhone extends DeesInputBase<DeesInputPhone> {
  accessor placeholder: string = '+1 (555) 123-4567';

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      /* Phone input specific styles can go here */
    `,
  ];
--- a/ts_web/elements/00group-input/dees-input-quantityselector/dees-input-quantityselector.ts
+++ b/ts_web/elements/00group-input/dees-input-quantityselector/dees-input-quantityselector.ts
@@ -2,6 +2,7 @@ import { customElement, property, html, type TemplateResult, css, cssManager } f
 import * as domtools from '@design.estate/dees-domtools';
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import { demoFunc } from './dees-input-quantityselector.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -23,14 +24,16 @@ export class DeesInputQuantitySelector extends DeesInputBase<DeesInputQuantitySe


  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+        /* TODO: Migrate hardcoded values to --dees-* CSS variables */
        :host {
          width: auto;
          user-select: none;
        }
-        
+
        .quantity-container {
          transition: all 0.15s ease;
          font-size: 14px;
--- a/ts_web/elements/00group-input/dees-input-radiogroup/dees-input-radiogroup.ts
+++ b/ts_web/elements/00group-input/dees-input-radiogroup/dees-input-radiogroup.ts
@@ -8,6 +8,7 @@ import {
 } from '@design.estate/dees-element';
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import { demoFunc } from './dees-input-radiogroup.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -59,9 +60,11 @@ export class DeesInputRadiogroup extends DeesInputBase<string | object> {
  }

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      * {
        box-sizing: border-box;
      }
--- a/ts_web/elements/00group-input/dees-input-tags/dees-input-tags.ts
+++ b/ts_web/elements/00group-input/dees-input-tags/dees-input-tags.ts
@@ -10,6 +10,7 @@ import {
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import '../../dees-icon/dees-icon.js';
 import { demoFunc } from './dees-input-tags.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -48,9 +49,11 @@ export class DeesInputTags extends DeesInputBase<DeesInputTags> {
  accessor validationText: string = '';

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
--- a/ts_web/elements/00group-input/dees-input-text/dees-input-text.ts
+++ b/ts_web/elements/00group-input/dees-input-text/dees-input-text.ts
@@ -11,6 +11,7 @@ import {
  cssManager,
  css,
 } from '@design.estate/dees-element';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -56,9 +57,11 @@ export class DeesInputText extends DeesInputBase {
  accessor validationFunction: (value: string) => boolean;

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      * {
        box-sizing: border-box;
      }
--- a/ts_web/elements/00group-input/dees-input-typelist/dees-input-typelist.ts
+++ b/ts_web/elements/00group-input/dees-input-typelist/dees-input-typelist.ts
@@ -11,6 +11,7 @@ import * as domtools from '@design.estate/dees-domtools';
 import { DeesInputBase } from '../dees-input-base/dees-input-base.js';

 import { demoFunc }  from './dees-input-typelist.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-input-typelist')
 export class DeesInputTypelist extends DeesInputBase<DeesInputTypelist> {
@@ -27,9 +28,11 @@ export class DeesInputTypelist extends DeesInputBase<DeesInputTypelist> {


  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('#333', '#fff')};
      }
--- a/ts_web/elements/00group-input/dees-input-wysiwyg/dees-formatting-menu.ts
+++ b/ts_web/elements/00group-input/dees-input-wysiwyg/dees-formatting-menu.ts
@@ -10,6 +10,7 @@ import {
 import { zIndexRegistry } from '../../00zindex.js';

 import { WysiwygFormatting } from './wysiwyg.formatting.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -41,8 +42,10 @@ export class DeesFormattingMenu extends DeesElement {
  private callback: ((command: string) => void | Promise<void>) | null = null;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        position: fixed;
        pointer-events: none;
--- a/ts_web/elements/00group-input/dees-input-wysiwyg/dees-input-wysiwyg.ts
+++ b/ts_web/elements/00group-input/dees-input-wysiwyg/dees-input-wysiwyg.ts
@@ -28,6 +28,7 @@ import {
  DeesSlashMenu,
  DeesFormattingMenu
 } from './index.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -86,6 +87,7 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
  private history: WysiwygHistory;

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    wysiwygStyles
--- a/ts_web/elements/00group-input/dees-input-wysiwyg/dees-slash-menu.ts
+++ b/ts_web/elements/00group-input/dees-input-wysiwyg/dees-slash-menu.ts
@@ -12,6 +12,7 @@ import '../../dees-icon/dees-icon.js';

 import { type ISlashMenuItem } from './wysiwyg.types.js';
 import { WysiwygShortcuts } from './wysiwyg.shortcuts.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -49,8 +50,10 @@ export class DeesSlashMenu extends DeesElement {
  private callback: ((type: string) => void) | null = null;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        position: fixed;
        pointer-events: none;
--- a/ts_web/elements/00group-input/dees-input-wysiwyg/dees-wysiwyg-block.ts
+++ b/ts_web/elements/00group-input/dees-input-wysiwyg/dees-wysiwyg-block.ts
@@ -15,6 +15,7 @@ import { BlockRegistry, type IBlockEventHandlers } from './blocks/index.js';
 import './wysiwyg.blockregistration.js';
 import { WysiwygShortcuts } from './wysiwyg.shortcuts.js';
 import '../../dees-contextmenu/dees-contextmenu.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -82,8 +83,10 @@ export class DeesWysiwygBlock extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
      }
--- a/ts_web/elements/00group-input/profilepicture/dees-input-profilepicture.ts
+++ b/ts_web/elements/00group-input/profilepicture/dees-input-profilepicture.ts
@@ -12,6 +12,7 @@ import '../../dees-icon/dees-icon.js';
 import '../../dees-label/dees-label.js';
 import { ProfilePictureModal } from './profilepicture.modal.js';
 import { demoFunc } from './dees-input-profilepicture.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -67,9 +68,11 @@ export class DeesInputProfilePicture extends DeesInputBase<DeesInputProfilePictu
  private modalInstance: ProfilePictureModal | null = null;

  public static styles = [
+    themeDefaultStyles,
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        position: relative;
--- a/ts_web/elements/00group-input/profilepicture/profilepicture.modal.ts
+++ b/ts_web/elements/00group-input/profilepicture/profilepicture.modal.ts
@@ -17,6 +17,7 @@ import '../../dees-windowlayer/dees-windowlayer.js';
 import { DeesWindowLayer } from '../../dees-windowlayer/dees-windowlayer.js';
 import { ImageCropper } from './profilepicture.cropper.js';
 import type { ProfileShape } from './dees-input-profilepicture.js';
+import { themeDefaultStyles } from '../../00theme.js';

@customElement('dees-profilepicture-modal')
 export class ProfilePictureModal extends DeesElement {
@@ -46,8 +47,10 @@ export class ProfilePictureModal extends DeesElement {
  private zIndex: number = 0;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        font-family: ${cssGeistFontFamily};
        color: ${cssManager.bdTheme('#333', '#fff')};
--- a/ts_web/elements/00group-simple/dees-simple-appdash/dees-simple-appdash.ts
+++ b/ts_web/elements/00group-simple/dees-simple-appdash/dees-simple-appdash.ts
@@ -15,6 +15,7 @@ import {
 } from '@design.estate/dees-element';
 import '../../dees-icon/dees-icon.js';
 import type { DeesTerminal } from '../../dees-terminal/dees-terminal.js';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -48,8 +49,10 @@ export class DeesSimpleAppDash extends DeesElement {


  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 90%)')};
        user-select: none;
--- a/ts_web/elements/00group-simple/dees-simple-login/dees-simple-login.ts
+++ b/ts_web/elements/00group-simple/dees-simple-login/dees-simple-login.ts
@@ -9,6 +9,7 @@ import {
  cssManager,
  css,
 } from '@design.estate/dees-element';
+import { themeDefaultStyles } from '../../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -26,8 +27,10 @@ export class DeesSimpleLogin extends DeesElement {
  accessor name: string = 'Application';

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('hsl(0 0% 3.9%)', 'hsl(0 0% 98%)')};
        user-select: none;
--- a/ts_web/elements/00theme.ts
+++ b/ts_web/elements/00theme.ts
@@ -0,0 +1,218 @@
+import { css, type CSSResult } from '@design.estate/dees-element';
+
+// ============================================
+// Theme Token Type Definitions
+// ============================================
+
+export interface IThemeColors {
+  bgPrimary: string;
+  bgSecondary: string;
+  bgTertiary: string;
+  textPrimary: string;
+  textSecondary: string;
+  textMuted: string;
+  borderDefault: string;
+  borderSubtle: string;
+  borderStrong: string;
+  accentPrimary: string;
+  accentSuccess: string;
+  accentWarning: string;
+  accentError: string;
+}
+
+export interface IThemeSpacing {
+  xs: string;
+  sm: string;
+  md: string;
+  lg: string;
+  xl: string;
+  '2xl': string;
+  '3xl': string;
+}
+
+export interface IThemeRadius {
+  xs: string;
+  sm: string;
+  md: string;
+  lg: string;
+  xl: string;
+  full: string;
+}
+
+export interface IThemeShadows {
+  xs: string;
+  sm: string;
+  md: string;
+  lg: string;
+}
+
+export interface IThemeTransitions {
+  fast: string;
+  default: string;
+  slow: string;
+  slower: string;
+}
+
+export interface IThemeControlHeights {
+  sm: string;
+  md: string;
+  lg: string;
+  xl: string;
+}
+
+export interface ITheme {
+  colors: {
+    light: IThemeColors;
+    dark: IThemeColors;
+  };
+  spacing: IThemeSpacing;
+  radius: IThemeRadius;
+  shadows: IThemeShadows;
+  transitions: IThemeTransitions;
+  controlHeights: IThemeControlHeights;
+}
+
+// ============================================
+// Default Theme Values (TypeScript Object)
+// ============================================
+
+export const themeDefaults: ITheme = {
+  colors: {
+    light: {
+      bgPrimary: '#ffffff',
+      bgSecondary: '#fafafa',
+      bgTertiary: '#f4f4f5',
+      textPrimary: '#09090b',
+      textSecondary: '#374151',
+      textMuted: '#71717a',
+      borderDefault: '#e5e7eb',
+      borderSubtle: '#f4f4f5',
+      borderStrong: '#d1d5db',
+      accentPrimary: '#3b82f6',
+      accentSuccess: '#22c55e',
+      accentWarning: '#f59e0b',
+      accentError: '#ef4444',
+    },
+    dark: {
+      bgPrimary: '#09090b',
+      bgSecondary: '#0a0a0a',
+      bgTertiary: '#18181b',
+      textPrimary: '#fafafa',
+      textSecondary: '#d4d4d8',
+      textMuted: '#a1a1aa',
+      borderDefault: '#27272a',
+      borderSubtle: '#1a1a1a',
+      borderStrong: '#3f3f46',
+      accentPrimary: '#3b82f6',
+      accentSuccess: '#22c55e',
+      accentWarning: '#f59e0b',
+      accentError: '#ef4444',
+    },
+  },
+  spacing: {
+    xs: '4px',
+    sm: '8px',
+    md: '12px',
+    lg: '16px',
+    xl: '24px',
+    '2xl': '32px',
+    '3xl': '48px',
+  },
+  radius: {
+    xs: '2px',
+    sm: '4px',
+    md: '6px',
+    lg: '8px',
+    xl: '12px',
+    full: '999px',
+  },
+  shadows: {
+    xs: '0 1px 2px 0 rgb(0 0 0 / 0.05)',
+    sm: '0 1px 3px rgba(0, 0, 0, 0.1)',
+    md: '0 2px 8px rgba(0, 0, 0, 0.15)',
+    lg: '0 4px 12px rgba(0, 0, 0, 0.15)',
+  },
+  transitions: {
+    fast: '0.1s',
+    default: '0.15s',
+    slow: '0.2s',
+    slower: '0.3s',
+  },
+  controlHeights: {
+    sm: '32px',
+    md: '36px',
+    lg: '40px',
+    xl: '48px',
+  },
+};
+
+// ============================================
+// CSS Block for Component Import
+// ============================================
+
+/**
+ * Default theme styles to be imported into every component's static styles array.
+ * Provides CSS custom properties for spacing, radius, shadows, transitions, and control heights.
+ *
+ * Usage:
+ * ```typescript
+ * import { themeDefaultStyles } from '../00theme.js';
+ *
+ * @customElement('my-component')
+ * export class MyComponent extends DeesElement {
+ *   public static styles = [
+ *     themeDefaultStyles,
+ *     cssManager.defaultStyles,
+ *     css`...`
+ *   ];
+ * }
+ * ```
+ */
+export const themeDefaultStyles: CSSResult = css`
+  :host {
+    /* ========================================
+     * Spacing Scale
+     * ======================================== */
+    --dees-spacing-xs: 4px;
+    --dees-spacing-sm: 8px;
+    --dees-spacing-md: 12px;
+    --dees-spacing-lg: 16px;
+    --dees-spacing-xl: 24px;
+    --dees-spacing-2xl: 32px;
+    --dees-spacing-3xl: 48px;
+
+    /* ========================================
+     * Border Radius Scale
+     * ======================================== */
+    --dees-radius-xs: 2px;
+    --dees-radius-sm: 4px;
+    --dees-radius-md: 6px;
+    --dees-radius-lg: 8px;
+    --dees-radius-xl: 12px;
+    --dees-radius-full: 999px;
+
+    /* ========================================
+     * Shadow Elevation Scale
+     * ======================================== */
+    --dees-shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
+    --dees-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
+    --dees-shadow-md: 0 2px 8px rgba(0, 0, 0, 0.15);
+    --dees-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
+
+    /* ========================================
+     * Transition Duration Scale
+     * ======================================== */
+    --dees-transition-fast: 0.1s;
+    --dees-transition-default: 0.15s;
+    --dees-transition-slow: 0.2s;
+    --dees-transition-slower: 0.3s;
+
+    /* ========================================
+     * Control Height Scale
+     * ======================================== */
+    --dees-control-height-sm: 32px;
+    --dees-control-height-md: 36px;
+    --dees-control-height-lg: 40px;
+    --dees-control-height-xl: 48px;
+  }
+`;
--- a/ts_web/elements/dees-badge/dees-badge.ts
+++ b/ts_web/elements/dees-badge/dees-badge.ts
@@ -11,6 +11,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-badge.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -37,8 +38,10 @@ export class DeesBadge extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: inline-block;
      }
--- a/ts_web/elements/dees-chips/dees-chips.ts
+++ b/ts_web/elements/dees-chips/dees-chips.ts
@@ -12,6 +12,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-chips.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -51,8 +52,10 @@ export class DeesChips extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        box-sizing: border-box;
--- a/ts_web/elements/dees-contextmenu/dees-contextmenu.ts
+++ b/ts_web/elements/dees-contextmenu/dees-contextmenu.ts
@@ -16,6 +16,7 @@ import * as domtools from '@design.estate/dees-domtools';
 import { DeesWindowLayer } from '../dees-windowlayer/dees-windowlayer.js';
 import { zIndexLayers } from '../00zindex.js';
 import '../dees-icon/dees-icon.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -133,6 +134,7 @@ export class DeesContextmenu extends DeesElement {
  private submenu: DeesContextmenu | null = null;
  private submenuTimeout: any = null;
  private parentMenu: DeesContextmenu | null = null;
+  private isDestroying: boolean = false;

  constructor() {
    super();
@@ -143,8 +145,10 @@ export class DeesContextmenu extends DeesElement {
   * STATIC STYLES
   */
  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        transition: opacity 0.2s, transform 0.2s;
@@ -413,27 +417,33 @@ export class DeesContextmenu extends DeesElement {
  }

  public async destroy() {
+    // Guard against double-destruction
+    if (this.isDestroying) {
+      return;
+    }
+    this.isDestroying = true;
+
    // Clear timeout
    if (this.submenuTimeout) {
      clearTimeout(this.submenuTimeout);
      this.submenuTimeout = null;
    }
-    
+
    // Destroy submenu first
    if (this.submenu) {
      await this.submenu.destroy();
      this.submenu = null;
    }
-    
+
    // Only destroy window layer if this is not a submenu
    if (this.windowLayer && !this.parentMenu) {
-      this.windowLayer.destroy();
+      await this.windowLayer.destroy();
    }
-    
+
    this.style.opacity = '0';
    this.style.transform = 'scale(0.95) translateY(-10px)';
    await domtools.plugins.smartdelay.delayFor(100);
-    
+
    if (this.parentElement) {
      this.parentElement.removeChild(this);
    }
@@ -443,13 +453,14 @@ export class DeesContextmenu extends DeesElement {
   * Destroys this menu and all parent menus in the chain
   */
  public async destroyAll() {
-    // First destroy parent menus if they exist
-    if (this.parentMenu) {
-      await this.parentMenu.destroyAll();
-    } else {
-      // If we're at the top level, just destroy this menu
-      await this.destroy();
+    // Find the root menu (top-level parent)
+    let rootMenu: DeesContextmenu = this;
+    while (rootMenu.parentMenu) {
+      rootMenu = rootMenu.parentMenu;
    }
+
+    // Destroy from the root - this will cascade through all submenus
+    await rootMenu.destroy();
  }
 }

--- a/ts_web/elements/dees-heading/dees-heading.ts
+++ b/ts_web/elements/dees-heading/dees-heading.ts
@@ -11,6 +11,7 @@ import {

 import { demoFunc } from './dees-heading.demo.js';
 import { cssCalSansFontFamily } from '../00fonts.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -32,8 +33,10 @@ export class DeesHeading extends DeesElement {

  // STATIC STYLES
  public static styles: CSSResult[] = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      /* Heading styles */
      h1, h2, h3, h4, h5, h6 {
        margin: 16px 0 8px;
--- a/ts_web/elements/dees-hint/dees-hint.ts
+++ b/ts_web/elements/dees-hint/dees-hint.ts
@@ -11,6 +11,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { demoFunc } from './dees-hint.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -30,7 +31,9 @@ export class DeesHint extends DeesElement {
    domtools.elementBasic.setup();
  }

-  public static styles = [cssManager.defaultStyles, css``];
+  public static styles = [themeDefaultStyles, cssManager.defaultStyles, css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
+    `];

  public render(): TemplateResult {
    return html` <div class="mainbox"></div> `;
--- a/ts_web/elements/dees-icon/dees-icon.ts
+++ b/ts_web/elements/dees-icon/dees-icon.ts
@@ -9,6 +9,7 @@ import {
 } from '@design.estate/dees-element';

 import * as domtools from '@design.estate/dees-domtools';
+import { themeDefaultStyles } from '../00theme.js';

 import { icon, type IconDefinition } from '@fortawesome/fontawesome-svg-core';
 import {
@@ -325,8 +326,10 @@ export class DeesIcon extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: inline-flex;
        align-items: center;
@@ -334,7 +337,7 @@ export class DeesIcon extends DeesElement {
        line-height: 1;
        vertical-align: middle;
      }
-      
+
      /* Improve rendering performance */
      #iconContainer svg {
        display: block;
--- a/ts_web/elements/dees-label/dees-label.ts
+++ b/ts_web/elements/dees-label/dees-label.ts
@@ -13,6 +13,7 @@ import {
 } from '@design.estate/dees-element';

 import { demoFunc } from './dees-label.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

@customElement('dees-label')
 export class DeesLabel extends DeesElement {
@@ -39,8 +40,10 @@ export class DeesLabel extends DeesElement {
  accessor required: boolean = false;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
      }
--- a/ts_web/elements/dees-mobilenavigation/dees-mobilenavigation.ts
+++ b/ts_web/elements/dees-mobilenavigation/dees-mobilenavigation.ts
@@ -14,6 +14,7 @@ import {
 } from '@design.estate/dees-element';
 import { DeesWindowLayer } from '../dees-windowlayer/dees-windowlayer.js';
 import '../dees-icon/dees-icon.js';
+import { themeDefaultStyles } from '../00theme.js';

@customElement('dees-mobilenavigation')
 export class DeesMobilenavigation extends DeesElement {
@@ -111,8 +112,10 @@ export class DeesMobilenavigation extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        font-family: ${cssGeistFontFamily};
      }
--- a/ts_web/elements/dees-modal/dees-modal.ts
+++ b/ts_web/elements/dees-modal/dees-modal.ts
@@ -21,6 +21,7 @@ import {
 import * as domtools from '@design.estate/dees-domtools';
 import { DeesWindowLayer } from '../dees-windowlayer/dees-windowlayer.js';
 import '../dees-icon/dees-icon.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -115,8 +116,10 @@ export class DeesModal extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        font-family: ${cssGeistFontFamily};
        color: ${cssManager.bdTheme('#333', '#fff')};
--- a/ts_web/elements/dees-pagination/dees-pagination.ts
+++ b/ts_web/elements/dees-pagination/dees-pagination.ts
@@ -1,5 +1,6 @@
 import { customElement, html, DeesElement, property, css, cssManager, type TemplateResult } from '@design.estate/dees-element';
 import { demoFunc } from './dees-pagination.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -23,8 +24,10 @@ export class DeesPagination extends DeesElement {
  accessor total = 1;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: inline-flex;
        align-items: center;
--- a/ts_web/elements/dees-panel/dees-panel.ts
+++ b/ts_web/elements/dees-panel/dees-panel.ts
@@ -9,6 +9,7 @@ import {
 } from '@design.estate/dees-element';
 import { demoFunc } from './dees-panel.demo.js';
 import { cssGeistFontFamily } from '../00fonts.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -36,8 +37,10 @@ export class DeesPanel extends DeesElement {
  accessor runAfterRender: ((elementArg: HTMLElement) => void | Promise<void>) | undefined = undefined;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        font-family: ${cssGeistFontFamily};
--- a/ts_web/elements/dees-progressbar/dees-progressbar.ts
+++ b/ts_web/elements/dees-progressbar/dees-progressbar.ts
@@ -16,6 +16,7 @@ import {
 } from '@design.estate/dees-element';

 import * as domtools from '@design.estate/dees-domtools';
+import { themeDefaultStyles } from '../00theme.js';

@customElement('dees-progressbar')
 export class DeesProgressbar extends DeesElement {
@@ -29,8 +30,10 @@ export class DeesProgressbar extends DeesElement {
  accessor percentage = 0;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme(colors.bright.text, colors.dark.text)};
      }
--- a/ts_web/elements/dees-searchbar/dees-searchbar.ts
+++ b/ts_web/elements/dees-searchbar/dees-searchbar.ts
@@ -13,6 +13,7 @@ import {

 import * as colors from '../00colors.js';
 import { demoFunc } from './dees-searchbar.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -27,8 +28,10 @@ export class DeesSearchbar extends DeesElement {

  // STATIC
  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        padding: 40px;
        font-family: Dees Sans;
--- a/ts_web/elements/dees-shopping-productcard/dees-shopping-productcard.ts
+++ b/ts_web/elements/dees-shopping-productcard/dees-shopping-productcard.ts
@@ -8,6 +8,7 @@ import {
  DeesElement,
 } from '@design.estate/dees-element';
 import { demoFunc } from './dees-shopping-productcard.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -51,8 +52,10 @@ export class DeesShoppingProductcard extends DeesElement {
  accessor selected: boolean = false;

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
      }
--- a/ts_web/elements/dees-speechbubble/dees-speechbubble.ts
+++ b/ts_web/elements/dees-speechbubble/dees-speechbubble.ts
@@ -17,6 +17,7 @@ import {
  unsafeHTML,
 } from '@design.estate/dees-element';
 import { DeesWindowLayer } from '../dees-windowlayer/dees-windowlayer.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -78,8 +79,10 @@ export class DeesSpeechbubble extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        box-sizing: border-box;
        color: ${cssManager.bdTheme('#333', '#fff')};
--- a/ts_web/elements/dees-spinner/dees-spinner.ts
+++ b/ts_web/elements/dees-spinner/dees-spinner.ts
@@ -11,6 +11,7 @@ import {
 } from '@design.estate/dees-element';

 import * as domtools from '@design.estate/dees-domtools';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -46,8 +47,10 @@ export class DeesSpinner extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
      }
--- a/ts_web/elements/dees-statsgrid/dees-statsgrid.ts
+++ b/ts_web/elements/dees-statsgrid/dees-statsgrid.ts
@@ -16,6 +16,7 @@ import type { TemplateResult } from '@design.estate/dees-element';
 import '../dees-icon/dees-icon.js';
 import '../dees-contextmenu/dees-contextmenu.js';
 import '../00group-button/dees-button/dees-button.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -75,8 +76,10 @@ export class DeesStatsGrid extends DeesElement {
  accessor contextMenuActions: plugins.tsclass.website.IMenuItem[] = [];

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        width: 100%;
--- a/ts_web/elements/dees-stepper/dees-stepper.ts
+++ b/ts_web/elements/dees-stepper/dees-stepper.ts
@@ -15,6 +15,7 @@ import {

 import * as domtools from '@design.estate/dees-domtools';
 import { stepperDemo } from './dees-stepper.demo.js';
+import { themeDefaultStyles } from '../00theme.js';

 export interface IStep {
  title: string;
@@ -50,8 +51,10 @@ export class DeesStepper extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        position: absolute;
        width: 100%;
--- a/ts_web/elements/dees-table/dees-table.ts
+++ b/ts_web/elements/dees-table/dees-table.ts
@@ -14,6 +14,7 @@ import {
  getViewData as getViewDataFn,
 } from './data.js';
 import { compileLucenePredicate } from './lucene.js';
+import { themeDefaultStyles } from '../00theme.js';

 export type { Column, ITableAction, ITableActionDataArg, TDisplayFunction } from './types.js';

--- a/ts_web/elements/dees-table/styles.ts
+++ b/ts_web/elements/dees-table/styles.ts
@@ -1,9 +1,12 @@
 import { cssManager, css, type CSSResult } from '@design.estate/dees-element';
 import { cssGeistFontFamily } from '../00fonts.js';
+import { themeDefaultStyles } from '../00theme.js';

 export const tableStyles: CSSResult[] = [
+  themeDefaultStyles,
  cssManager.defaultStyles,
  css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        width: 100%;
--- a/ts_web/elements/dees-terminal/dees-terminal.ts
+++ b/ts_web/elements/dees-terminal/dees-terminal.ts
@@ -13,6 +13,7 @@ import * as webcontainer from '@webcontainer/api';

 import { Terminal } from 'xterm';
 import { FitAddon } from 'xterm-addon-fit';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -57,8 +58,10 @@ export class DeesTerminal extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        padding: 20px;
        background: var(--dees-terminal-background, #000000);
--- a/ts_web/elements/dees-theme/dees-theme.demo.ts
+++ b/ts_web/elements/dees-theme/dees-theme.demo.ts
@@ -0,0 +1,275 @@
+import { html, css, cssManager } from '@design.estate/dees-element';
+
+export const demoFunc = () => html`
+  <style>
+    .demo-container {
+      display: flex;
+      flex-direction: column;
+      gap: 32px;
+      padding: 48px;
+      background: ${cssManager.bdTheme('#f8f9fa', '#0a0a0a')};
+      min-height: 100vh;
+    }
+
+    .section {
+      background: ${cssManager.bdTheme('#ffffff', '#18181b')};
+      border: 1px solid ${cssManager.bdTheme('#e5e7eb', '#27272a')};
+      border-radius: 8px;
+      padding: 24px;
+    }
+
+    .section-title {
+      font-size: 18px;
+      font-weight: 600;
+      margin-bottom: 16px;
+      color: ${cssManager.bdTheme('#09090b', '#fafafa')};
+    }
+
+    .section-description {
+      font-size: 14px;
+      color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};
+      margin-bottom: 24px;
+    }
+
+    .token-grid {
+      display: grid;
+      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
+      gap: 16px;
+    }
+
+    .token-item {
+      background: ${cssManager.bdTheme('#f4f4f5', '#27272a')};
+      border-radius: 6px;
+      padding: 16px;
+    }
+
+    .token-name {
+      font-family: 'Intel One Mono', monospace;
+      font-size: 12px;
+      color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};
+      margin-bottom: 8px;
+    }
+
+    .token-value {
+      font-size: 14px;
+      font-weight: 500;
+      color: ${cssManager.bdTheme('#09090b', '#fafafa')};
+    }
+
+    .spacing-demo {
+      display: flex;
+      align-items: flex-end;
+      gap: 8px;
+      flex-wrap: wrap;
+    }
+
+    .spacing-box {
+      background: ${cssManager.bdTheme('#3b82f6', '#3b82f6')};
+      border-radius: 4px;
+    }
+
+    .radius-demo {
+      display: flex;
+      gap: 16px;
+      flex-wrap: wrap;
+    }
+
+    .radius-box {
+      width: 60px;
+      height: 60px;
+      background: ${cssManager.bdTheme('#3b82f6', '#3b82f6')};
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      color: white;
+      font-size: 11px;
+      font-weight: 500;
+    }
+
+    .shadow-demo {
+      display: flex;
+      gap: 24px;
+      flex-wrap: wrap;
+    }
+
+    .shadow-box {
+      width: 100px;
+      height: 100px;
+      background: ${cssManager.bdTheme('#ffffff', '#27272a')};
+      border-radius: 8px;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      font-size: 12px;
+      font-weight: 500;
+      color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};
+    }
+
+    .height-demo {
+      display: flex;
+      gap: 16px;
+      align-items: flex-end;
+      flex-wrap: wrap;
+    }
+
+    .height-box {
+      background: ${cssManager.bdTheme('#3b82f6', '#3b82f6')};
+      width: 120px;
+      border-radius: 6px;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      color: white;
+      font-size: 12px;
+      font-weight: 500;
+    }
+  </style>
+  <div class="demo-container">
+    <dees-theme>
+      <div class="section">
+        <div class="section-title">Spacing Scale</div>
+        <div class="section-description">
+          CSS variables: --dees-spacing-xs through --dees-spacing-3xl
+        </div>
+        <div class="spacing-demo">
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-xs); height: var(--dees-spacing-xs);"></div>
+            <div class="token-name">xs (4px)</div>
+          </div>
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-sm); height: var(--dees-spacing-sm);"></div>
+            <div class="token-name">sm (8px)</div>
+          </div>
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-md); height: var(--dees-spacing-md);"></div>
+            <div class="token-name">md (12px)</div>
+          </div>
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-lg); height: var(--dees-spacing-lg);"></div>
+            <div class="token-name">lg (16px)</div>
+          </div>
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-xl); height: var(--dees-spacing-xl);"></div>
+            <div class="token-name">xl (24px)</div>
+          </div>
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-2xl); height: var(--dees-spacing-2xl);"></div>
+            <div class="token-name">2xl (32px)</div>
+          </div>
+          <div>
+            <div class="spacing-box" style="width: var(--dees-spacing-3xl); height: var(--dees-spacing-3xl);"></div>
+            <div class="token-name">3xl (48px)</div>
+          </div>
+        </div>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Border Radius Scale</div>
+        <div class="section-description">
+          CSS variables: --dees-radius-xs through --dees-radius-full
+        </div>
+        <div class="radius-demo">
+          <div>
+            <div class="radius-box" style="border-radius: var(--dees-radius-xs);">xs</div>
+            <div class="token-name">2px</div>
+          </div>
+          <div>
+            <div class="radius-box" style="border-radius: var(--dees-radius-sm);">sm</div>
+            <div class="token-name">4px</div>
+          </div>
+          <div>
+            <div class="radius-box" style="border-radius: var(--dees-radius-md);">md</div>
+            <div class="token-name">6px</div>
+          </div>
+          <div>
+            <div class="radius-box" style="border-radius: var(--dees-radius-lg);">lg</div>
+            <div class="token-name">8px</div>
+          </div>
+          <div>
+            <div class="radius-box" style="border-radius: var(--dees-radius-xl);">xl</div>
+            <div class="token-name">12px</div>
+          </div>
+          <div>
+            <div class="radius-box" style="border-radius: var(--dees-radius-full);">full</div>
+            <div class="token-name">999px</div>
+          </div>
+        </div>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Shadow Elevation Scale</div>
+        <div class="section-description">
+          CSS variables: --dees-shadow-xs through --dees-shadow-lg
+        </div>
+        <div class="shadow-demo">
+          <div>
+            <div class="shadow-box" style="box-shadow: var(--dees-shadow-xs);">xs</div>
+            <div class="token-name">minimal</div>
+          </div>
+          <div>
+            <div class="shadow-box" style="box-shadow: var(--dees-shadow-sm);">sm</div>
+            <div class="token-name">subtle</div>
+          </div>
+          <div>
+            <div class="shadow-box" style="box-shadow: var(--dees-shadow-md);">md</div>
+            <div class="token-name">medium</div>
+          </div>
+          <div>
+            <div class="shadow-box" style="box-shadow: var(--dees-shadow-lg);">lg</div>
+            <div class="token-name">prominent</div>
+          </div>
+        </div>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Control Height Scale</div>
+        <div class="section-description">
+          CSS variables: --dees-control-height-sm through --dees-control-height-xl
+        </div>
+        <div class="height-demo">
+          <div>
+            <div class="height-box" style="height: var(--dees-control-height-sm);">sm</div>
+            <div class="token-name">32px</div>
+          </div>
+          <div>
+            <div class="height-box" style="height: var(--dees-control-height-md);">md</div>
+            <div class="token-name">36px</div>
+          </div>
+          <div>
+            <div class="height-box" style="height: var(--dees-control-height-lg);">lg</div>
+            <div class="token-name">40px</div>
+          </div>
+          <div>
+            <div class="height-box" style="height: var(--dees-control-height-xl);">xl</div>
+            <div class="token-name">48px</div>
+          </div>
+        </div>
+      </div>
+
+      <div class="section">
+        <div class="section-title">Transition Durations</div>
+        <div class="section-description">
+          CSS variables: --dees-transition-fast through --dees-transition-slower
+        </div>
+        <div class="token-grid">
+          <div class="token-item">
+            <div class="token-name">--dees-transition-fast</div>
+            <div class="token-value">0.1s</div>
+          </div>
+          <div class="token-item">
+            <div class="token-name">--dees-transition-default</div>
+            <div class="token-value">0.15s</div>
+          </div>
+          <div class="token-item">
+            <div class="token-name">--dees-transition-slow</div>
+            <div class="token-value">0.2s</div>
+          </div>
+          <div class="token-item">
+            <div class="token-name">--dees-transition-slower</div>
+            <div class="token-value">0.3s</div>
+          </div>
+        </div>
+      </div>
+    </dees-theme>
+  </div>
+`;
--- a/ts_web/elements/dees-theme/dees-theme.ts
+++ b/ts_web/elements/dees-theme/dees-theme.ts
@@ -0,0 +1,224 @@
+import {
+  DeesElement,
+  type TemplateResult,
+  property,
+  customElement,
+  html,
+  css,
+  cssManager,
+} from '@design.estate/dees-element';
+
+import {
+  type ITheme,
+  type IThemeColors,
+  type IThemeSpacing,
+  type IThemeRadius,
+  type IThemeShadows,
+  type IThemeTransitions,
+  type IThemeControlHeights,
+  themeDefaults,
+  themeDefaultStyles,
+} from '../00theme.js';
+
+import { demoFunc } from './dees-theme.demo.js';
+
+/**
+ * A theme provider component that wraps children and provides CSS custom properties.
+ * Can be used at the app root or around specific sections to customize theming.
+ *
+ * Usage:
+ * ```html
+ * <dees-theme>
+ *   <my-app></my-app>
+ * </dees-theme>
+ * ```
+ *
+ * With custom overrides:
+ * ```html
+ * <dees-theme .customSpacing=${{ lg: '20px' }}>
+ *   <my-section></my-section>
+ * </dees-theme>
+ * ```
+ */
+@customElement('dees-theme')
+export class DeesTheme extends DeesElement {
+  public static demo = demoFunc;
+
+  // ============================================
+  // Properties for theme overrides
+  // ============================================
+
+  @property({ type: Object })
+  accessor customSpacing: Partial<IThemeSpacing> | null = null;
+
+  @property({ type: Object })
+  accessor customRadius: Partial<IThemeRadius> | null = null;
+
+  @property({ type: Object })
+  accessor customShadows: Partial<IThemeShadows> | null = null;
+
+  @property({ type: Object })
+  accessor customTransitions: Partial<IThemeTransitions> | null = null;
+
+  @property({ type: Object })
+  accessor customControlHeights: Partial<IThemeControlHeights> | null = null;
+
+  // ============================================
+  // Styles
+  // ============================================
+
+  public static styles = [
+    themeDefaultStyles,
+    cssManager.defaultStyles,
+    css`
+      :host {
+        display: contents;
+      }
+    `,
+  ];
+
+  // ============================================
+  // Render
+  // ============================================
+
+  public render(): TemplateResult {
+    return html`
+      <style>
+        ${this.generateCustomStyles()}
+      </style>
+      <slot></slot>
+    `;
+  }
+
+  // ============================================
+  // Private Methods
+  // ============================================
+
+  private generateCustomStyles(): string {
+    const styles: string[] = [':host {'];
+
+    // Custom spacing
+    if (this.customSpacing) {
+      for (const [key, value] of Object.entries(this.customSpacing)) {
+        if (value) {
+          styles.push(`  --dees-spacing-${key}: ${value};`);
+        }
+      }
+    }
+
+    // Custom radius
+    if (this.customRadius) {
+      for (const [key, value] of Object.entries(this.customRadius)) {
+        if (value) {
+          styles.push(`  --dees-radius-${key}: ${value};`);
+        }
+      }
+    }
+
+    // Custom shadows
+    if (this.customShadows) {
+      for (const [key, value] of Object.entries(this.customShadows)) {
+        if (value) {
+          styles.push(`  --dees-shadow-${key}: ${value};`);
+        }
+      }
+    }
+
+    // Custom transitions
+    if (this.customTransitions) {
+      for (const [key, value] of Object.entries(this.customTransitions)) {
+        if (value) {
+          const cssKey = key === 'default' ? 'default' : key;
+          styles.push(`  --dees-transition-${cssKey}: ${value};`);
+        }
+      }
+    }
+
+    // Custom control heights
+    if (this.customControlHeights) {
+      for (const [key, value] of Object.entries(this.customControlHeights)) {
+        if (value) {
+          styles.push(`  --dees-control-height-${key}: ${value};`);
+        }
+      }
+    }
+
+    styles.push('}');
+    return styles.join('\n');
+  }
+
+  // ============================================
+  // Public API Methods
+  // ============================================
+
+  /**
+   * Set a spacing value dynamically
+   */
+  public setSpacing(key: keyof IThemeSpacing, value: string): void {
+    this.customSpacing = { ...this.customSpacing, [key]: value };
+  }
+
+  /**
+   * Set a radius value dynamically
+   */
+  public setRadius(key: keyof IThemeRadius, value: string): void {
+    this.customRadius = { ...this.customRadius, [key]: value };
+  }
+
+  /**
+   * Set a shadow value dynamically
+   */
+  public setShadow(key: keyof IThemeShadows, value: string): void {
+    this.customShadows = { ...this.customShadows, [key]: value };
+  }
+
+  /**
+   * Set a transition value dynamically
+   */
+  public setTransition(key: keyof IThemeTransitions, value: string): void {
+    this.customTransitions = { ...this.customTransitions, [key]: value };
+  }
+
+  /**
+   * Set a control height value dynamically
+   */
+  public setControlHeight(key: keyof IThemeControlHeights, value: string): void {
+    this.customControlHeights = { ...this.customControlHeights, [key]: value };
+  }
+
+  /**
+   * Get the current theme configuration (defaults + overrides)
+   */
+  public getTheme(): ITheme {
+    return {
+      colors: themeDefaults.colors,
+      spacing: { ...themeDefaults.spacing, ...this.customSpacing },
+      radius: { ...themeDefaults.radius, ...this.customRadius },
+      shadows: { ...themeDefaults.shadows, ...this.customShadows },
+      transitions: { ...themeDefaults.transitions, ...this.customTransitions },
+      controlHeights: { ...themeDefaults.controlHeights, ...this.customControlHeights },
+    };
+  }
+
+  /**
+   * Reset all custom overrides to defaults
+   */
+  public resetToDefaults(): void {
+    this.customSpacing = null;
+    this.customRadius = null;
+    this.customShadows = null;
+    this.customTransitions = null;
+    this.customControlHeights = null;
+  }
+
+  /**
+   * Apply a complete theme object
+   */
+  public applyTheme(theme: Partial<ITheme>): void {
+    if (theme.spacing) this.customSpacing = theme.spacing;
+    if (theme.radius) this.customRadius = theme.radius;
+    if (theme.shadows) this.customShadows = theme.shadows;
+    if (theme.transitions) this.customTransitions = theme.transitions;
+    if (theme.controlHeights) this.customControlHeights = theme.controlHeights;
+  }
+}
--- a/ts_web/elements/dees-theme/index.ts
+++ b/ts_web/elements/dees-theme/index.ts
@@ -0,0 +1 @@
+export * from './dees-theme.js';
--- a/ts_web/elements/dees-toast/dees-toast.ts
+++ b/ts_web/elements/dees-toast/dees-toast.ts
@@ -4,6 +4,7 @@ import * as domtools from '@design.estate/dees-domtools';
 import { zIndexLayers } from '../00zindex.js';
 import { demoFunc } from './dees-toast.demo.js';
 import { cssGeistFontFamily } from '../00fonts.js';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -148,8 +149,10 @@ export class DeesToast extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        display: block;
        pointer-events: auto;
--- a/ts_web/elements/dees-updater/dees-updater.ts
+++ b/ts_web/elements/dees-updater/dees-updater.ts
@@ -11,6 +11,7 @@ import { demoFunc } from './dees-updater.demo.js';

 import '../dees-windowlayer/dees-windowlayer.js';
 import { css, cssManager } from '@design.estate/dees-element';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -44,8 +45,10 @@ export class DeesUpdater extends DeesElement {
  }

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      .modalContainer {
        will-change: transform;
        position: relative;
--- a/ts_web/elements/dees-windowcontrols/dees-windowcontrols.ts
+++ b/ts_web/elements/dees-windowcontrols/dees-windowcontrols.ts
@@ -10,6 +10,7 @@ import {
  css,
  cssManager,
 } from '@design.estate/dees-element';
+import { themeDefaultStyles } from '../00theme.js';

 declare global {
  interface HTMLElementTagNameMap {
@@ -34,8 +35,10 @@ export class DeesWindowControls extends DeesElement {
  accessor position: 'left' | 'right' = 'left';

  public static styles = [
+    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        position: relative;
        display: block;
--- a/ts_web/elements/index.ts
+++ b/ts_web/elements/index.ts
@@ -1,4 +1,5 @@
 export * from './00zindex.js';
+export * from './00theme.js';

 // Component Groups
 export * from './00group-appui/index.js';
@@ -37,3 +38,4 @@ export * from './dees-toast/index.js';
 export * from './dees-updater/index.js';
 export * from './dees-windowcontrols/index.js';
 export * from './dees-windowlayer/index.js';
+export * from './dees-theme/index.js';
--- a/ts_web/elements/interfaces/appconfig.ts
+++ b/ts_web/elements/interfaces/appconfig.ts
@@ -1,7 +1,6 @@
 import type { TemplateResult } from '@design.estate/dees-element';
 import type { IAppBarMenuItem } from './appbarmenuitem.js';
-import type { ITab } from './tab.js';
-import type { ISecondaryMenuGroup } from './secondarymenu.js';
+import type { IMenuItem } from './tab.js';
 import type { IMenuGroup } from './menugroup.js';

 // Forward declaration for circular reference
@@ -15,22 +14,27 @@ export type TDeesAppuiBase = HTMLElement & {
  setWindowControlsVisible: (visible: boolean) => void;
  setMainMenu: (config: IMainMenuConfig) => void;
  updateMainMenuGroup: (groupName: string, update: Partial<IMenuGroup>) => void;
-  addMainMenuItem: (groupName: string, tab: ITab) => void;
+  addMainMenuItem: (groupName: string, tab: IMenuItem) => void;
  removeMainMenuItem: (groupName: string, tabKey: string) => void;
  setMainMenuSelection: (tabKey: string) => void;
  setMainMenuCollapsed: (collapsed: boolean) => void;
+  setMainMenuVisible: (visible: boolean) => void;
+  setSecondaryMenuCollapsed: (collapsed: boolean) => void;
+  setSecondaryMenuVisible: (visible: boolean) => void;
+  setContentTabsVisible: (visible: boolean) => void;
+  setContentTabsAutoHide: (enabled: boolean, threshold?: number) => void;
  setMainMenuBadge: (tabKey: string, badge: string | number) => void;
  clearMainMenuBadge: (tabKey: string) => void;
-  setSecondaryMenu: (config: { heading?: string; groups: ISecondaryMenuGroup[] }) => void;
-  updateSecondaryMenuGroup: (groupName: string, update: Partial<ISecondaryMenuGroup>) => void;
-  addSecondaryMenuItem: (groupName: string, item: ISecondaryMenuGroup['items'][0]) => void;
+  setSecondaryMenu: (config: { heading?: string; groups: IMenuGroup[] }) => void;
+  updateSecondaryMenuGroup: (groupName: string, update: Partial<IMenuGroup>) => void;
+  addSecondaryMenuItem: (groupName: string, item: IMenuGroup['items'][0]) => void;
  setSecondaryMenuSelection: (itemKey: string) => void;
  clearSecondaryMenu: () => void;
-  setContentTabs: (tabs: ITab[]) => void;
-  addContentTab: (tab: ITab) => void;
+  setContentTabs: (tabs: IMenuItem[]) => void;
+  addContentTab: (tab: IMenuItem) => void;
  removeContentTab: (tabKey: string) => void;
  selectContentTab: (tabKey: string) => void;
-  getSelectedContentTab: () => ITab | undefined;
+  getSelectedContentTab: () => IMenuItem | undefined;
  activityLog: IActivityLogAPI;
  navigateToView: (viewId: string, params?: Record<string, string>) => Promise<boolean>;
  getCurrentView: () => IViewDefinition | undefined;
@@ -132,9 +136,9 @@ export interface IViewDefinition {
    | (() => TemplateResult)
    | (() => Promise<string | (new () => HTMLElement) | (() => TemplateResult)>);
  /** Secondary menu items specific to this view */
-  secondaryMenu?: ISecondaryMenuGroup[];
+  secondaryMenu?: IMenuGroup[];
  /** Content tabs specific to this view */
-  contentTabs?: ITab[];
+  contentTabs?: IMenuItem[];
  /** Optional route path (defaults to id). Supports params like 'settings/:section' */
  route?: string;
  /** Badge to show on menu item */
@@ -169,7 +173,7 @@ export interface IMainMenuConfig {
  /** Bottom pinned items (view IDs or tabs) */
  bottomItems?: string[];
  /** Bottom tabs */
-  bottomTabs?: ITab[];
+  bottomTabs?: IMenuItem[];
 }

 /**
--- a/ts_web/elements/interfaces/index.ts
+++ b/ts_web/elements/interfaces/index.ts
@@ -1,6 +1,4 @@
 export * from './tab.js';
-export * from './selectionoption.js';
 export * from './appbarmenuitem.js';
 export * from './menugroup.js';
-export * from './secondarymenu.js';
 export * from './appconfig.js';
--- a/ts_web/elements/interfaces/menugroup.ts
+++ b/ts_web/elements/interfaces/menugroup.ts
@@ -1,6 +1,8 @@
-import type { ITab } from './tab.js';
+import type { IMenuItem } from './tab.js';

 export interface IMenuGroup {
-  name?: string;
-  tabs: ITab[];
+  name: string;
+  items: IMenuItem[];
+  collapsed?: boolean;
+  iconName?: string;
 }
--- a/ts_web/elements/interfaces/secondarymenu.ts
+++ b/ts_web/elements/interfaces/secondarymenu.ts
@@ -1,20 +0,0 @@
-/**
- * Interface for individual menu items in the secondary menu
- */
-export interface ISecondaryMenuItem {
-  key: string;
-  iconName?: string;
-  action: () => void;
-  badge?: string | number;
-  badgeVariant?: 'default' | 'success' | 'warning' | 'error';
-}
-
-/**
- * Interface for collapsible groups in the secondary menu
- */
-export interface ISecondaryMenuGroup {
-  name: string;
-  items: ISecondaryMenuItem[];
-  collapsed?: boolean;
-  iconName?: string;
-}
--- a/ts_web/elements/interfaces/selectionoption.ts
+++ b/ts_web/elements/interfaces/selectionoption.ts
@@ -1,5 +0,0 @@
-export interface ISelectionOption {
-  key: string;
-  iconName?: string;
-  action: () => void;
-}
--- a/ts_web/elements/interfaces/tab.ts
+++ b/ts_web/elements/interfaces/tab.ts
@@ -1,7 +1,9 @@
-export interface ITab {
+export interface IMenuItem {
  key: string;
  iconName?: string;
  action: () => void;
  badge?: string | number;
  badgeVariant?: 'default' | 'success' | 'warning' | 'error';
+  closeable?: boolean;
+  onClose?: () => void;
 }
Author	SHA1	Message	Date
Juergen Kunz	540f1c2431	v3.11.0 Some checks failed Default (tags) / security (push) Failing after 15s Details Default (tags) / test (push) Failing after 15s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-30 10:27:34 +00:00
Juergen Kunz	af1df1b3d6	feat(dees-appui-tabs): improve horizontal tabs UX with scroll fades, hover scrollbar, and smooth scroll-to-selected	2025-12-30 10:27:34 +00:00
Juergen Kunz	34ed47e535	v3.10.0 Some checks failed Default (tags) / security (push) Failing after 16s Details Default (tags) / test (push) Failing after 12s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 23:33:38 +00:00
Juergen Kunz	5f67bcfb71	feat(appui-tabs): add closeable tabs and auto-hide behavior for content tabs, plus API and events to control them	2025-12-29 23:33:38 +00:00
Juergen Kunz	7b39c871f3	v3.9.0 Some checks failed Default (tags) / security (push) Failing after 14s Details Default (tags) / test (push) Failing after 15s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 22:45:39 +00:00
Juergen Kunz	6f9bebf0f8	feat(dees-appui-mainmenu): add status badges to main menu items with theme-aware styling	2025-12-29 22:45:39 +00:00
Juergen Kunz	e51c906adb	v3.8.0 Some checks failed Default (tags) / security (push) Failing after 14s Details Default (tags) / test (push) Failing after 15s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 12:03:11 +00:00
Juergen Kunz	0626889bef	feat(dees-appui-base): add interactive demo controls to manipulate appui via view activation context	2025-12-29 12:03:11 +00:00
Juergen Kunz	3c1456c0c1	v3.7.1 Some checks failed Default (tags) / security (push) Failing after 13s Details Default (tags) / test (push) Failing after 14s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 11:44:16 +00:00
Juergen Kunz	cc71f232d2	fix(dees-appui-maincontent): migrate main content layout to CSS Grid and enable topbar collapse transitions	2025-12-29 11:44:16 +00:00
Juergen Kunz	8a4d69694c	v3.7.0 Some checks failed Default (tags) / security (push) Failing after 14s Details Default (tags) / test (push) Failing after 14s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 11:30:49 +00:00
Juergen Kunz	e45810dd06	feat(dees-contextmenu,dees-appui-tabs,test): Prevent double-destruction of context menus, await window layer teardown, update destroyAll behavior, remove tabs content slot, and adjust tests	2025-12-29 11:30:49 +00:00
Juergen Kunz	45a2743312	v3.6.1 Some checks failed Default (tags) / security (push) Failing after 14s Details Default (tags) / test (push) Failing after 15s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 03:04:39 +00:00
Juergen Kunz	c5b50f3eb0	fix(readme): document new App UI APIs to control main/secondary menu and content tabs visibility	2025-12-29 03:04:39 +00:00
Juergen Kunz	aedd4a041c	v3.6.0 Some checks failed Default (tags) / security (push) Failing after 17s Details Default (tags) / test (push) Failing after 11s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 02:55:03 +00:00
Juergen Kunz	1f37474d3f	feat(dees-appui): add visibility toggles for main/secondary menus and ability to show/hide content tabs; expose corresponding setters and appconfig entries	2025-12-29 02:55:03 +00:00
Juergen Kunz	76748a81c9	v3.5.1 Some checks failed Default (tags) / security (push) Failing after 13s Details Default (tags) / test (push) Failing after 15s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 02:09:09 +00:00
Juergen Kunz	1e432ca92e	fix(dees-appui-view): remove DeesAppuiView component, its demo, documentation snippet, and related exports	2025-12-29 02:09:09 +00:00
Juergen Kunz	965d328559	v3.5.0 Some checks failed Default (tags) / security (push) Failing after 15s Details Default (tags) / test (push) Failing after 15s Details Default (tags) / release (push) Has been skipped Details Default (tags) / metadata (push) Has been skipped Details	2025-12-29 01:20:24 +00:00
Juergen Kunz	e38d3cd42a	feat(theme,interfaces): Introduce a global theming system and unify menu/tab interfaces; migrate components to use themeDefaultStyles and update APIs accordingly	2025-12-29 01:20:24 +00:00