diff --git a/frontend/angular.json b/frontend/angular.json
index 6d8bb04..8c5cf7c 100644
--- a/frontend/angular.json
+++ b/frontend/angular.json
@@ -53,7 +53,12 @@
             ],
             "styles": [
               "src/styles.scss"
-            ]
+            ],
+            "stylePreprocessorOptions": {
+              "includePaths": [
+                "src"
+              ]
+            }
           },
           "configurations": {
             "production": {
diff --git a/frontend/src/app/design/index.ts b/frontend/src/app/design/index.ts
new file mode 100644
index 0000000..3c94005
--- /dev/null
+++ b/frontend/src/app/design/index.ts
@@ -0,0 +1,11 @@
+// ============================================================================
+// OpenClaw Control Center — Design System Barrel Export
+// ============================================================================
+// Import everything from '@app/design' for convenient access.
+//
+// Usage:
+//   import { CcTokens, CcThemeService, CcCssProps } from '@app/design';
+// ============================================================================
+
+export * from './tokens';
+export * from './theme.service';
\ No newline at end of file
diff --git a/frontend/src/app/design/theme.service.ts b/frontend/src/app/design/theme.service.ts
new file mode 100644
index 0000000..3fe1ae3
--- /dev/null
+++ b/frontend/src/app/design/theme.service.ts
@@ -0,0 +1,151 @@
+// ============================================================================
+// OpenClaw Control Center — Theme Service
+// ============================================================================
+// Angular service providing programmatic access to design tokens, theme
+// mode switching (dark/light), and runtime CSS custom property manipulation.
+//
+// Usage:
+//   constructor(private theme: CcThemeService) {}
+//
+//   // Read a token
+//   const primary = this.theme.getToken('--cc-color-primary');
+//
+//   // Set a token at runtime
+//   this.theme.setToken('--cc-color-primary', '#00ff00');
+//
+//   // Toggle theme
+//   this.theme.setMode('light');
+// ============================================================================
+
+import { Injectable, signal, computed, effect } from '@angular/core';
+import { CcCssProps, getStatusColor, setCssToken, getCssToken } from './tokens';
+
+// ---------------------------------------------------------------------------
+// Theme Mode Types
+// ---------------------------------------------------------------------------
+export type ThemeMode = 'dark' | 'light';
+
+// ---------------------------------------------------------------------------
+// Light theme overrides (future use)
+// ---------------------------------------------------------------------------
+const LIGHT_THEME_OVERRIDES: Record<string, string> = {
+  // Surface tokens
+  '--cc-surface-darkest':     '#F8FAFC',
+  '--cc-surface-dark':        '#FFFFFF',
+  '--cc-surface-medium':      '#F1F5F9',
+  '--cc-surface-light':       '#E2E8F0',
+  '--cc-surface-lighter':     '#CBD5E1',
+
+  // On-surface tokens
+  '--cc-on-surface':          '#0F172A',
+  '--cc-on-surface-variant':  '#475569',
+  '--cc-on-surface-muted':    '#94A3B8',
+
+  // Border
+  '--cc-surface-lighter-alt': '#E2E8F0',
+
+  // M3 system overrides for light
+  '--mat-sys-surface':                '#FFFFFF',
+  '--mat-sys-surface-container':      '#F1F5F9',
+  '--mat-sys-surface-container-high': '#E2E8F0',
+  '--mat-sys-on-surface':            '#0F172A',
+  '--mat-sys-on-surface-variant':    '#475569',
+  '--mat-sys-outline':               '#CBD5E1',
+  '--mat-sys-background':            '#F8FAFC',
+};
+
+// ---------------------------------------------------------------------------
+// Dark theme (matches the SCSS defaults)
+// ---------------------------------------------------------------------------
+const DARK_THEME_OVERRIDES: Record<string, string> = {
+  '--cc-surface-darkest':     '#0D0F12',
+  '--cc-surface-dark':        '#13161A',
+  '--cc-surface-medium':      '#1C2027',
+  '--cc-surface-light':       '#252B33',
+  '--cc-surface-lighter':     '#2D3748',
+
+  '--cc-on-surface':          '#E2E8F0',
+  '--cc-on-surface-variant':  '#8A9BB0',
+  '--cc-on-surface-muted':    '#64748B',
+
+  '--mat-sys-surface':                '#13161A',
+  '--mat-sys-surface-container':      '#1C2027',
+  '--mat-sys-surface-container-high': '#252B33',
+  '--mat-sys-on-surface':            '#E2E8F0',
+  '--mat-sys-on-surface-variant':    '#8A9BB0',
+  '--mat-sys-outline':               '#2D3748',
+  '--mat-sys-background':            '#0D0F12',
+};
+
+@Injectable({ providedIn: 'root' })
+export class CcThemeService {
+  // ---------------------------------------------------------------------------
+  // Signals for reactive theme state
+  // ---------------------------------------------------------------------------
+  private readonly _mode = signal<ThemeMode>(
+    (localStorage.getItem('cc-theme') as ThemeMode) ?? 'dark'
+  );
+
+  /** Current theme mode */
+  readonly mode = this._mode.asReadonly();
+
+  /** Computed: is the current mode dark? */
+  readonly isDark = computed(() => this._mode() === 'dark');
+
+  /** Computed: is the current mode light? */
+  readonly isLight = computed(() => this._mode() === 'light');
+
+  constructor() {
+    // Apply theme on init and whenever mode changes
+    effect(() => {
+      this.applyTheme(this._mode());
+    });
+  }
+
+  // ---------------------------------------------------------------------------
+  // Public API
+  // ---------------------------------------------------------------------------
+
+  /** Set the theme mode and persist to localStorage */
+  setMode(mode: ThemeMode): void {
+    this._mode.set(mode);
+    localStorage.setItem('cc-theme', mode);
+  }
+
+  /** Toggle between dark and light mode */
+  toggle(): void {
+    this.setMode(this._mode() === 'dark' ? 'light' : 'dark');
+  }
+
+  /** Read a CSS custom property from the document root */
+  getToken(property: string): string {
+    return getCssToken(property);
+  }
+
+  /** Set a CSS custom property on the document root */
+  setToken(property: string, value: string): void {
+    setCssToken(property, value);
+  }
+
+  /** Get status color set by agent status */
+  getStatusColors(status: string): { fg: string; bg: string; border: string } {
+    return getStatusColor(status);
+  }
+
+  // ---------------------------------------------------------------------------
+  // Internal
+  // ---------------------------------------------------------------------------
+
+  /** Apply a theme mode by setting all CSS custom properties */
+  private applyTheme(mode: ThemeMode): void {
+    const overrides = mode === 'dark' ? DARK_THEME_OVERRIDES : LIGHT_THEME_OVERRIDES;
+
+    // Set color-scheme for native form controls
+    document.documentElement.style.setProperty('color-scheme', mode);
+
+    // Apply all overrides
+    for (const [prop, value] of Object.entries(overrides)) {
+      document.documentElement.style.setProperty(prop, value);
+    }
+  }
+}
\ No newline at end of file
diff --git a/frontend/src/app/design/tokens.ts b/frontend/src/app/design/tokens.ts
new file mode 100644
index 0000000..1029c9b
--- /dev/null
+++ b/frontend/src/app/design/tokens.ts
@@ -0,0 +1,379 @@
+// ============================================================================
+// OpenClaw Control Center — Design Tokens (TypeScript)
+// ============================================================================
+// Typed representation of the design system tokens for programmatic access.
+// These mirror the SCSS tokens in styles/_tokens.scss and the CSS custom
+// properties emitted by styles/_css-properties.scss.
+//
+// Usage:
+//   import { CcTokens } from '@app/design/tokens';
+//   const primary = CcTokens.color.primary;
+//   const surface = CcTokens.surface.dark;
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// Color Palette
+// ---------------------------------------------------------------------------
+export const CcColors = {
+  primary: {
+    50:  '#ecfeff',
+    100: '#cffafe',
+    200: '#a5f3fc',
+    300: '#67e8f9',
+    400: '#22d3ee',
+    500: '#38bdf8',
+    600: '#0ea5e9',
+    700: '#0284c7',
+    800: '#0369a1',
+    900: '#075985',
+  },
+  secondary: {
+    50:  '#f0fdfa',
+    100: '#ccfbf1',
+    200: '#99f6e4',
+    300: '#5eead4',
+    400: '#2dd4bf',
+    500: '#14b8a6',
+    600: '#0d9488',
+    700: '#0f766e',
+    800: '#115e59',
+    900: '#134e4a',
+  },
+  accent: {
+    50:  '#f5f3ff',
+    100: '#ede9fe',
+    200: '#ddd6fe',
+    300: '#c4b5fd',
+    400: '#a78bfa',
+    500: '#8b5cf6',
+    600: '#7c3aed',
+    700: '#6d28d9',
+    800: '#5b21b6',
+    900: '#4c1d95',
+  },
+  danger: {
+    50:  '#fef2f2',
+    100: '#fee2e2',
+    200: '#fecaca',
+    300: '#fca5a5',
+    400: '#f87171',
+    500: '#ef4444',
+    600: '#dc2626',
+    700: '#b91c1c',
+    800: '#991b1b',
+    900: '#7f1d1d',
+  },
+} as const;
+
+// ---------------------------------------------------------------------------
+// Semantic Colors (Tactical Dark)
+// ---------------------------------------------------------------------------
+export const CcSemanticColors = {
+  surface: {
+    darkest: '#0D0F12',
+    dark:    '#13161A',
+    medium:  '#1C2027',
+    light:   '#252B33',
+    lighter: '#2D3748',
+  },
+  onSurface: {
+    primary:  '#E2E8F0',
+    variant:  '#8A9BB0',
+    muted:    '#64748B',
+  },
+} as const;
+
+// ---------------------------------------------------------------------------
+// Status Colors
+// ---------------------------------------------------------------------------
+export const CcStatusColors = {
+  active:   { fg: '#38bdf8', bg: 'rgba(56, 189, 248, 0.12)',  border: 'rgba(56, 189, 248, 0.40)' },
+  idle:     { fg: '#2dd4bf', bg: 'rgba(45, 212, 191, 0.12)',  border: 'rgba(45, 212, 191, 0.40)' },
+  thinking: { fg: '#a78bfa', bg: 'rgba(167, 139, 250, 0.12)', border: 'rgba(167, 139, 250, 0.40)' },
+  error:    { fg: '#f87171', bg: 'rgba(248, 113, 113, 0.12)', border: 'rgba(248, 113, 113, 0.40)' },
+  offline:  { fg: '#64748b', bg: 'rgba(100, 116, 139, 0.12)', border: 'rgba(100, 116, 139, 0.40)' },
+} as const;
+
+// ---------------------------------------------------------------------------
+// Typography
+// ---------------------------------------------------------------------------
+export const CcTypography = {
+  fontFamily: {
+    brand: "'Inter, Roboto, sans-serif'",
+    body:  "'Inter, Roboto, sans-serif'",
+    mono:  "'Roboto Mono, Cascadia Code, Fira Code, monospace'",
+  },
+  size: {
+    displayLarge:  '57px',
+    displayMedium: '45px',
+    displaySmall:  '36px',
+    headlineLarge: '32px',
+    headlineMedium: '28px',
+    headlineSmall:  '24px',
+    titleLarge:    '22px',
+    titleMedium:   '16px',
+    titleSmall:    '14px',
+    bodyLarge:     '16px',
+    bodyMedium:    '14px',
+    bodySmall:     '12px',
+    labelLarge:    '14px',
+    labelMedium:   '12px',
+    labelSmall:    '11px',
+  },
+  weight: {
+    regular: 400,
+    medium:  500,
+    bold:    600,
+    heavy:   700,
+  },
+  lineHeight: {
+    tight:   '1.2',
+    normal:  '1.5',
+    relaxed: '1.6',
+  },
+  letterSpacing: {
+    tight:  '-0.01em',
+    normal: '0em',
+    wide:   '0.02em',
+    mono:   '0.05em',
+  },
+} as const;
+
+// ---------------------------------------------------------------------------
+// Spacing (4px grid)
+// ---------------------------------------------------------------------------
+export const CcSpacing = {
+  0:  '0px',
+  1:  '4px',
+  2:  '8px',
+  3:  '12px',
+  4:  '16px',
+  5:  '20px',
+  6:  '24px',
+  7:  '28px',
+  8:  '32px',
+  9:  '36px',
+  10: '40px',
+  12: '48px',
+  14: '56px',
+  16: '64px',
+  20: '80px',
+} as const;
+
+// ---------------------------------------------------------------------------
+// Layout
+// ---------------------------------------------------------------------------
+export const CcLayout = {
+  navRailCollapsedWidth: '72px',
+  navRailExpandedWidth:  '256px',
+  headerHeight:          '64px',
+  bottomNavHeight:       '80px',
+  cardBorderRadius:      '16px',
+  cardMinWidth:          '320px',
+  badgeHeight:           '24px',
+  badgeBorderRadius:     '12px',
+  statusDotSize:         '10px',
+} as const;
+
+// ---------------------------------------------------------------------------
+// Breakpoints (M3 canonical)
+// ---------------------------------------------------------------------------
+export const CcBreakpoints = {
+  compact:  599,
+  medium:   767,
+  expanded: 1023,
+  large:    1439,
+} as const;
+
+// ---------------------------------------------------------------------------
+// Border Radius
+// ---------------------------------------------------------------------------
+export const CcRadius = {
+  none: '0px',
+  xs:   '4px',
+  sm:   '8px',
+  md:   '12px',
+  lg:   '16px',
+  xl:   '24px',
+  full: '9999px',
+} as const;
+
+// ---------------------------------------------------------------------------
+// Shadows (M3 elevation)
+// ---------------------------------------------------------------------------
+export const CcShadows = {
+  level0: 'none',
+  level1: '0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3)',
+  level2: '0 2px 6px 0 rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3)',
+  level3: '0 4px 12px 0 rgba(0, 0, 0, 0.3), 0 4px 8px -4px rgba(0, 0, 0, 0.3)',
+  level4: '0 8px 24px 0 rgba(0, 0, 0, 0.3), 0 8px 16px -8px rgba(0, 0, 0, 0.3)',
+} as const;
+
+// ---------------------------------------------------------------------------
+// Motion
+// ---------------------------------------------------------------------------
+export const CcMotion = {
+  duration: {
+    instant:   0,
+    fast:      100,
+    short:     150,
+    medium:    200,
+    standard: 300,
+    long:     500,
+  },
+  easing: {
+    standard:   'cubic-bezier(0.4, 0, 0.2, 1)',
+    decelerate: 'cubic-bezier(0, 0, 0.2, 1)',
+    accelerate: 'cubic-bezier(0.4, 0, 1, 1)',
+    sharp:     'cubic-bezier(0.4, 0, 0.6, 1)',
+  },
+} as const;
+
+// ---------------------------------------------------------------------------
+// Accessibility
+// ---------------------------------------------------------------------------
+export const CcA11y = {
+  focusRing: {
+    width:   '2px',
+    offset:  '2px',
+    color:   '#38bdf8',
+    style:   'solid',
+  },
+  minTouchTarget: 48,
+  minBodyFont:    16,
+} as const;
+
+// ---------------------------------------------------------------------------
+// Aggregate token object for convenient access
+// ---------------------------------------------------------------------------
+export const CcTokens = {
+  color: CcColors,
+  semantic: CcSemanticColors,
+  status: CcStatusColors,
+  typography: CcTypography,
+  spacing: CcSpacing,
+  layout: CcLayout,
+  breakpoints: CcBreakpoints,
+  radius: CcRadius,
+  shadows: CcShadows,
+  motion: CcMotion,
+  a11y: CcA11y,
+} as const;
+
+// ---------------------------------------------------------------------------
+// CSS Custom Property Names
+// ---------------------------------------------------------------------------
+// Use these constants when setting styles programmatically via Renderer2
+// or ElementRef.style, e.g.: el.style.setProperty(CcCssProps.colorPrimary, '#fff')
+// ---------------------------------------------------------------------------
+export const CcCssProps = {
+  // Color
+  colorPrimary:      '--cc-color-primary',
+  colorSecondary:    '--cc-color-secondary',
+  colorAccent:       '--cc-color-accent',
+  colorDanger:       '--cc-color-danger',
+
+  // Surface
+  surfaceDarkest:    '--cc-surface-darkest',
+  surfaceDark:       '--cc-surface-dark',
+  surfaceMedium:     '--cc-surface-medium',
+  surfaceLight:      '--cc-surface-light',
+  surfaceLighter:    '--cc-surface-lighter',
+
+  // On-surface
+  onSurface:         '--cc-on-surface',
+  onSurfaceVariant:  '--cc-on-surface-variant',
+  onSurfaceMuted:    '--cc-on-surface-muted',
+
+  // Status
+  statusActive:       '--cc-status-active',
+  statusIdle:         '--cc-status-idle',
+  statusThinking:    '--cc-status-thinking',
+  statusError:        '--cc-status-error',
+  statusOffline:      '--cc-status-offline',
+  statusActiveBg:     '--cc-status-active-bg',
+  statusIdleBg:       '--cc-status-idle-bg',
+  statusThinkingBg:   '--cc-status-thinking-bg',
+  statusErrorBg:      '--cc-status-error-bg',
+  statusOfflineBg:    '--cc-status-offline-bg',
+  statusActiveBorder:  '--cc-status-active-border',
+  statusIdleBorder:    '--cc-status-idle-border',
+  statusThinkingBorder: '--cc-status-thinking-border',
+  statusErrorBorder:   '--cc-status-error-border',
+  statusOfflineBorder: '--cc-status-offline-border',
+
+  // Typography
+  fontBrand: '--cc-font-brand',
+  fontBody:  '--cc-font-body',
+  fontMono:  '--cc-font-mono',
+
+  // Spacing
+  spacing2:  '--cc-spacing-2',
+  spacing4:  '--cc-spacing-4',
+  spacing6:  '--cc-spacing-6',
+  spacing8:  '--cc-spacing-8',
+  spacing12: '--cc-spacing-12',
+  spacing16: '--cc-spacing-16',
+
+  // Layout
+  navRailCollapsed: '--cc-nav-rail-collapsed',
+  navRailExpanded:  '--cc-nav-rail-expanded',
+  headerHeight:      '--cc-header-height',
+  bottomNavHeight:  '--cc-bottom-nav-height',
+  cardRadius:       '--cc-card-radius',
+  cardMinWidth:     '--cc-card-min-width',
+
+  // Radius
+  radiusNone: '--cc-radius-none',
+  radiusXs:   '--cc-radius-xs',
+  radiusSm:   '--cc-radius-sm',
+  radiusMd:   '--cc-radius-md',
+  radiusLg:   '--cc-radius-lg',
+  radiusXl:   '--cc-radius-xl',
+  radiusFull: '--cc-radius-full',
+
+  // Shadows
+  shadow0: '--cc-shadow-0',
+  shadow1: '--cc-shadow-1',
+  shadow2: '--cc-shadow-2',
+  shadow3: '--cc-shadow-3',
+  shadow4: '--cc-shadow-4',
+
+  // Motion
+  durationFast:     '--cc-duration-fast',
+  durationShort:    '--cc-duration-short',
+  durationMedium:   '--cc-duration-medium',
+  durationStandard: '--cc-duration-standard',
+  durationLong:     '--cc-duration-long',
+  easingStandard:   '--cc-easing-standard',
+  easingDecelerate: '--cc-easing-decelerate',
+  easingAccelerate: '--cc-easing-accelerate',
+
+  // Accessibility
+  focusWidth:  '--cc-focus-width',
+  focusOffset: '--cc-focus-offset',
+  focusColor:  '--cc-focus-color',
+  touchMin:    '--cc-touch-min',
+} as const;
+
+// ---------------------------------------------------------------------------
+// Utility: Read a CSS custom property from the document
+// ---------------------------------------------------------------------------
+export function getCssToken(propertyName: string): string {
+  return getComputedStyle(document.documentElement).getPropertyValue(propertyName).trim();
+}
+
+// ---------------------------------------------------------------------------
+// Utility: Set a CSS custom property on the document root
+// ---------------------------------------------------------------------------
+export function setCssToken(propertyName: string, value: string): void {
+  document.documentElement.style.setProperty(propertyName, value);
+}
+
+// ---------------------------------------------------------------------------
+// Utility: Get status color by agent status type
+// ---------------------------------------------------------------------------
+export function getStatusColor(status: string): { fg: string; bg: string; border: string } {
+  const statusMap: Record<string, { fg: string; bg: string; border: string }> = CcStatusColors;
+  return statusMap[status] ?? CcStatusColors.offline;
+}
\ No newline at end of file
diff --git a/frontend/src/styles.scss b/frontend/src/styles.scss
index a581a28..5a06940 100644
--- a/frontend/src/styles.scss
+++ b/frontend/src/styles.scss
@@ -1,10 +1,18 @@
 // ============================================================================
 // OpenClaw Control Center — M3 Tactical Dark Theme
 // ============================================================================
-// Material Design 3 theming with custom dark palette per design spec.
-// Section 5.1: Color Palette, Section 5.2: Typography
+// Main global stylesheet. Imports the design system token modules and
+// applies the M3 dark theme. All tokens are defined once in
+//   styles/_tokens.scss     — SCSS variables and mixins
+//   styles/_css-properties.scss — CSS custom property output
+//   styles/_utilities.scss  — utility mixins for components
+//
+// Components should @use these modules rather than hardcoding values.
 // ============================================================================
 
+@use 'styles/tokens' as tokens;
+@use 'styles/css-properties' as css-props;
+@use 'styles/utilities' as utils;
 @use '@angular/material' as mat;
 
 // ---------------------------------------------------------------------------
@@ -21,11 +29,11 @@ $dark-theme: mat.define-theme((
     tertiary: mat.$violet-palette,
   ),
   typography: (
-    brand-family: 'Inter, Roboto, sans-serif',
-    plain-family: 'Inter, Roboto, sans-serif',
-    bold-weight: 600,
-    medium-weight: 500,
-    regular-weight: 400,
+    brand-family: tokens.$font-family-brand,
+    plain-family: tokens.$font-family-body,
+    bold-weight: tokens.$font-weight-bold,
+    medium-weight: tokens.$font-weight-medium,
+    regular-weight: tokens.$font-weight-regular,
   ),
   density: (
     scale: 0,
@@ -42,68 +50,17 @@ html {
 }
 
 // ---------------------------------------------------------------------------
-// Custom CSS Custom Properties — Status Colors
+// Emit Design System CSS Custom Properties
 // ---------------------------------------------------------------------------
-// Per spec Section 5.1 "Status Colors (Semantic — outside M3 tonal system)"
-// These are NOT part of the M3 tonal palette; they are semantic overrides.
-// ---------------------------------------------------------------------------
-:root {
-  // --- Tactical Dark Mode color palette (CUB-47) ---
-  --color-surface: #0F172A;
-  --color-surface-light: #1E293B;
-  --color-primary: #38BDF8;
-  --color-secondary: #2DD4BF;
-  --color-accent: #A78BFA;
-  --color-danger: #F87171;
-  --color-text-primary: #FFFFFF;
-  --color-text-secondary: #94A3B8;
-  --color-border: #334155;
-
-  // --- Status colors ---
-  --status-active: #38BDF8;
-  --status-idle: #2DD4BF;
-  --status-thinking: #A78BFA;
-  --status-error: #F87171;
-  --status-offline: #64748B;
-
-  // --- Status background tints (12% opacity) ---
-  --status-active-bg: rgba(56, 189, 248, 0.12);
-  --status-idle-bg: rgba(45, 212, 191, 0.12);
-  --status-thinking-bg: rgba(167, 139, 250, 0.12);
-  --status-error-bg: rgba(248, 113, 113, 0.12);
-
-  // --- Surface overrides (tactical dark palette) ---
-  --cc-background: #0D0F12;
-  --cc-surface: #13161A;
-  --cc-surface-container: #1C2027;
-  --cc-surface-container-high: #252B33;
-  --cc-on-surface: #E2E8F0;
-  --cc-on-surface-variant: #8A9BB0;
-  --cc-outline: #2D3748;
-
-  // --- Mono font stack ---
-  --cc-font-mono: 'Roboto Mono', 'Cascadia Code', 'Fira Code', monospace;
-
-  // --- Layout constants ---
-  --cc-nav-rail-collapsed-width: 72px;
-  --cc-nav-rail-expanded-width: 256px;
-  --cc-header-height: 64px;
-  --cc-bottom-nav-height: 80px;
-  --cc-card-border-radius: 16px;
-  --cc-card-min-width: 320px;
-  --cc-card-gap: 16px;
-  --cc-card-padding: 20px;
-  --cc-section-padding: 24px;
-  --cc-spacing-unit: 8px;
-}
+@include css-props.emit-custom-properties;
 
 // ---------------------------------------------------------------------------
 // Global Body Styles
 // ---------------------------------------------------------------------------
 body {
-  background-color: var(--color-surface);
+  background-color: var(--cc-surface-darkest);
   color: var(--cc-on-surface);
-  font-family: 'Inter', 'Roboto', sans-serif;
+  font-family: var(--cc-font-body);
   margin: 0;
   height: 100%;
   min-height: 100vh;
@@ -111,37 +68,60 @@ body {
   -moz-osx-font-smoothing: grayscale;
 }
 
-// ---------------------------------------------------------------------------
-// M3 Surface Overrides
-// ---------------------------------------------------------------------------
-// Override M3 surface tokens to match our tactical dark palette
-// ---------------------------------------------------------------------------
-:root {
-  // Override M3 system color tokens to match custom palette
-  --mat-sys-surface: var(--cc-surface);
-  --mat-sys-surface-container: var(--cc-surface-container);
-  --mat-sys-surface-container-high: var(--cc-surface-container-high);
-  --mat-sys-on-surface: var(--cc-on-surface);
-  --mat-sys-on-surface-variant: var(--cc-on-surface-variant);
-  --mat-sys-outline: var(--cc-outline);
-  --mat-sys-background: var(--cc-background);
-}
-
 // ---------------------------------------------------------------------------
 // Typography Helpers
 // ---------------------------------------------------------------------------
 .text-mono {
   font-family: var(--cc-font-mono);
-  font-size: 13px;
-  font-weight: 400;
-  letter-spacing: 0.02em;
+  font-size: tokens.$font-size-body-medium;
+  font-weight: tokens.$font-weight-regular;
+  letter-spacing: tokens.$letter-spacing-mono;
+}
+
+.text-display-large {
+  font-size: tokens.$font-size-display-large;
+  font-weight: tokens.$font-weight-heavy;
+  line-height: tokens.$line-height-tight;
+  letter-spacing: tokens.$letter-spacing-tight;
+}
+
+.text-headline-medium {
+  font-size: tokens.$font-size-headline-medium;
+  font-weight: tokens.$font-weight-bold;
+  line-height: tokens.$line-height-tight;
+}
+
+.text-title-large {
+  font-size: tokens.$font-size-title-large;
+  font-weight: tokens.$font-weight-bold;
+}
+
+.text-title-medium {
+  font-size: tokens.$font-size-title-medium;
+  font-weight: tokens.$font-weight-medium;
+}
+
+.text-body-large {
+  font-size: tokens.$font-size-body-large;
+  font-weight: tokens.$font-weight-regular;
+  line-height: tokens.$line-height-normal;
+}
+
+.text-body-medium {
+  font-size: tokens.$font-size-body-medium;
+  font-weight: tokens.$font-weight-regular;
+  line-height: tokens.$line-height-normal;
+}
+
+.text-label-medium {
+  font-size: tokens.$font-size-label-medium;
+  font-weight: tokens.$font-weight-medium;
+  letter-spacing: tokens.$letter-spacing-wide;
 }
 
 // ---------------------------------------------------------------------------
 // Status Dot Pulse Animations
 // ---------------------------------------------------------------------------
-// Per spec Section 7.5: Animation Specs
-// ---------------------------------------------------------------------------
 @keyframes pulse-active {
   0%, 100% { opacity: 1; transform: scale(1); }
   50% { opacity: 0.7; transform: scale(1.15); }
@@ -158,35 +138,35 @@ body {
 }
 
 // ---------------------------------------------------------------------------
-// Utility Classes
+// Status Dot Utility Classes
 // ---------------------------------------------------------------------------
 .status-dot {
-  width: 10px;
-  height: 10px;
-  border-radius: 50%;
+  width: tokens.$status-dot-size;
+  height: tokens.$status-dot-size;
+  border-radius: tokens.$radius-full;
   display: inline-block;
 
   &--active {
-    background-color: var(--status-active);
-    animation: pulse-active 2s ease-in-out infinite;
+    background-color: var(--cc-status-active);
+    animation: pulse-active tokens.$duration-standard tokens.$easing-standard infinite;
   }
 
   &--idle {
-    background-color: var(--status-idle);
+    background-color: var(--cc-status-idle);
   }
 
   &--thinking {
-    background-color: var(--status-thinking);
-    animation: pulse-thinking 3s ease-in-out infinite;
+    background-color: var(--cc-status-thinking);
+    animation: pulse-thinking 3s tokens.$easing-standard infinite;
   }
 
   &--error {
-    background-color: var(--status-error);
-    animation: pulse-error 0.8s ease-in-out infinite;
+    background-color: var(--cc-status-error);
+    animation: pulse-error tokens.$duration-fast tokens.$easing-standard infinite;
   }
 
   &--offline {
-    background-color: var(--status-offline);
+    background-color: var(--cc-status-offline);
   }
 }
 
@@ -201,6 +181,27 @@ body {
   }
 }
 
+// ---------------------------------------------------------------------------
+// Screen-reader-only utility
+// ---------------------------------------------------------------------------
+.sr-only {
+  @include tokens.sr-only;
+}
+
+// ---------------------------------------------------------------------------
+// Truncate utility
+// ---------------------------------------------------------------------------
+.truncate {
+  @include tokens.truncate;
+}
+
+// ---------------------------------------------------------------------------
+// Focus ring utility
+// ---------------------------------------------------------------------------
+.focus-ring {
+  @include tokens.focus-ring;
+}
+
 // ---------------------------------------------------------------------------
 // Scrollbar Styling (Tactical Dark)
 // ---------------------------------------------------------------------------
@@ -210,11 +211,11 @@ body {
 }
 
 ::-webkit-scrollbar-track {
-  background: var(--cc-surface);
+  background: var(--cc-surface-dark);
 }
 
 ::-webkit-scrollbar-thumb {
-  background: var(--cc-outline);
+  background: var(--cc-surface-lighter);
   border-radius: 3px;
 
   &:hover {
diff --git a/frontend/src/styles/_css-properties.scss b/frontend/src/styles/_css-properties.scss
new file mode 100644
index 0000000..d067500
--- /dev/null
+++ b/frontend/src/styles/_css-properties.scss
@@ -0,0 +1,115 @@
+// ============================================================================
+// OpenClaw Control Center — CSS Custom Property Output
+// ============================================================================
+// This module emits ALL design tokens as CSS custom properties on :root.
+// Import this in styles.scss to make tokens available to all components.
+//
+// Tokens are namespaced with --cc- (Control Center) to avoid collisions
+// with Angular Material's --mat- variables.
+// ============================================================================
+
+@use 'tokens' as *;
+
+// ---------------------------------------------------------------------------
+// Emit all CSS custom properties
+// ---------------------------------------------------------------------------
+@mixin emit-custom-properties {
+  :root {
+    // --- Color tokens ---
+    --cc-color-primary:       #{$color-primary-500};
+    --cc-color-secondary:     #{$color-secondary-400};
+    --cc-color-accent:        #{$color-accent-400};
+    --cc-color-danger:        #{$color-danger-400};
+
+    // --- Surface tokens ---
+    --cc-surface-darkest:     #{$color-surface-darkest};
+    --cc-surface-dark:        #{$color-surface-dark};
+    --cc-surface-medium:      #{$color-surface-medium};
+    --cc-surface-light:       #{$color-surface-light};
+    --cc-surface-lighter:     #{$color-surface-lighter};
+
+    // --- On-surface tokens ---
+    --cc-on-surface:          #{$color-on-surface};
+    --cc-on-surface-variant:  #{$color-on-surface-variant};
+    --cc-on-surface-muted:    #{$color-on-surface-muted};
+
+    // --- Status tokens ---
+    --cc-status-active:       #{$status-active};
+    --cc-status-idle:         #{$status-idle};
+    --cc-status-thinking:     #{$status-thinking};
+    --cc-status-error:        #{$status-error};
+    --cc-status-offline:      #{$status-offline};
+
+    --cc-status-active-bg:    #{$status-active-bg};
+    --cc-status-idle-bg:      #{$status-idle-bg};
+    --cc-status-thinking-bg:  #{$status-thinking-bg};
+    --cc-status-error-bg:     #{$status-error-bg};
+    --cc-status-offline-bg:   #{$status-offline-bg};
+
+    --cc-status-active-border:  #{$status-active-border};
+    --cc-status-idle-border:    #{$status-idle-border};
+    --cc-status-thinking-border: #{$status-thinking-border};
+    --cc-status-error-border:   #{$status-error-border};
+    --cc-status-offline-border:  #{$status-offline-border};
+
+    // --- Typography tokens ---
+    --cc-font-brand:   #{$font-family-brand};
+    --cc-font-body:    #{$font-family-body};
+    --cc-font-mono:    #{$font-family-mono};
+
+    // --- Spacing tokens ---
+    --cc-spacing-0:   #{$spacing-0};
+    --cc-spacing-1:   #{$spacing-1};
+    --cc-spacing-2:   #{$spacing-2};
+    --cc-spacing-3:   #{$spacing-3};
+    --cc-spacing-4:   #{$spacing-4};
+    --cc-spacing-5:   #{$spacing-5};
+    --cc-spacing-6:   #{$spacing-6};
+    --cc-spacing-7:   #{$spacing-7};
+    --cc-spacing-8:   #{$spacing-8};
+    --cc-spacing-10:  #{$spacing-10};
+    --cc-spacing-12:  #{$spacing-12};
+    --cc-spacing-16:  #{$spacing-16};
+
+    // --- Layout tokens ---
+    --cc-nav-rail-collapsed:  #{$nav-rail-collapsed-width};
+    --cc-nav-rail-expanded:   #{$nav-rail-expanded-width};
+    --cc-header-height:        #{$header-height};
+    --cc-bottom-nav-height:   #{$bottom-nav-height};
+    --cc-card-radius:         #{$card-border-radius};
+    --cc-card-min-width:      #{$card-min-width};
+
+    // --- Radius tokens ---
+    --cc-radius-none:  #{$radius-none};
+    --cc-radius-xs:    #{$radius-xs};
+    --cc-radius-sm:    #{$radius-sm};
+    --cc-radius-md:    #{$radius-md};
+    --cc-radius-lg:    #{$radius-lg};
+    --cc-radius-xl:    #{$radius-xl};
+    --cc-radius-full:  #{$radius-full};
+
+    // --- Shadow tokens ---
+    --cc-shadow-0: #{$shadow-level-0};
+    --cc-shadow-1: #{$shadow-level-1};
+    --cc-shadow-2: #{$shadow-level-2};
+    --cc-shadow-3: #{$shadow-level-3};
+    --cc-shadow-4: #{$shadow-level-4};
+
+    // --- Motion tokens ---
+    --cc-duration-fast:     #{$duration-fast};
+    --cc-duration-short:    #{$duration-short};
+    --cc-duration-medium:   #{$duration-medium};
+    --cc-duration-standard: #{$duration-standard};
+    --cc-duration-long:     #{$duration-long};
+
+    --cc-easing-standard:   #{$easing-standard};
+    --cc-easing-decelerate: #{$easing-decelerate};
+    --cc-easing-accelerate: #{$easing-accelerate};
+
+    // --- Accessibility tokens ---
+    --cc-focus-width:  #{$focus-ring-width};
+    --cc-focus-offset: #{$focus-ring-offset};
+    --cc-focus-color:  #{$focus-ring-color};
+    --cc-touch-min:    #{$min-touch-target};
+  }
+}
\ No newline at end of file
diff --git a/frontend/src/styles/_tokens.scss b/frontend/src/styles/_tokens.scss
new file mode 100644
index 0000000..a430661
--- /dev/null
+++ b/frontend/src/styles/_tokens.scss
@@ -0,0 +1,437 @@
+// ============================================================================
+// OpenClaw Control Center — M3 Design Tokens
+// ============================================================================
+// Single source of truth for all design tokens.
+// Components should @use this module and reference tokens via variables or
+// the theme() mixin rather than hardcoding values.
+//
+// Token structure:
+//   1. Color tokens    — palette, semantic, status, surface
+//   2. Typography      — families, sizes, weights, line-heights
+//   3. Spacing         — 4px base grid, named steps
+//   4. Layout          — dimensions, breakpoints, radii, shadows
+//   5. Motion          — durations, easing curves
+//   6. Accessibility   — focus, reduced-motion
+// ============================================================================
+
+@use 'sass:map';
+@use 'sass:meta';
+
+// ============================================================================
+// 1. COLOR TOKENS
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// 1a. Primary Palette (M3 cyan-based)
+// ---------------------------------------------------------------------------
+$color-primary-50:  #ecfeff;
+$color-primary-100: #cffafe;
+$color-primary-200: #a5f3fc;
+$color-primary-300: #67e8f9;
+$color-primary-400: #22d3ee;
+$color-primary-500: #38bdf8;  // Brand primary
+$color-primary-600: #0ea5e9;
+$color-primary-700: #0284c7;
+$color-primary-800: #0369a1;
+$color-primary-900: #075985;
+
+// ---------------------------------------------------------------------------
+// 1b. Secondary Palette (M3 teal-based)
+// ---------------------------------------------------------------------------
+$color-secondary-50:  #f0fdfa;
+$color-secondary-100: #ccfbf1;
+$color-secondary-200: #99f6e4;
+$color-secondary-300: #5eead4;
+$color-secondary-400: #2dd4bf;  // Brand secondary
+$color-secondary-500: #14b8a6;
+$color-secondary-600: #0d9488;
+$color-secondary-700: #0f766e;
+$color-secondary-800: #115e59;
+$color-secondary-900: #134e4a;
+
+// ---------------------------------------------------------------------------
+// 1c. Accent / Tertiary Palette (M3 violet-based)
+// ---------------------------------------------------------------------------
+$color-accent-50:  #f5f3ff;
+$color-accent-100: #ede9fe;
+$color-accent-200: #ddd6fe;
+$color-accent-300: #c4b5fd;
+$color-accent-400: #a78bfa;  // Brand accent
+$color-accent-500: #8b5cf6;
+$color-accent-600: #7c3aed;
+$color-accent-700: #6d28d9;
+$color-accent-800: #5b21b6;
+$color-accent-900: #4c1d95;
+
+// ---------------------------------------------------------------------------
+// 1d. Danger / Error Palette
+// ---------------------------------------------------------------------------
+$color-danger-50:  #fef2f2;
+$color-danger-100: #fee2e2;
+$color-danger-200: #fecaca;
+$color-danger-300: #fca5a5;
+$color-danger-400: #f87171;  // Brand danger
+$color-danger-500: #ef4444;
+$color-danger-600: #dc2626;
+$color-danger-700: #b91c1c;
+$color-danger-800: #991b1b;
+$color-danger-900: #7f1d1d;
+
+// ---------------------------------------------------------------------------
+// 1e. Semantic Surface Tokens (Tactical Dark)
+// ---------------------------------------------------------------------------
+$color-surface-darkest:   #0D0F12;  // Page background
+$color-surface-dark:      #13161A;  // Card / container surface
+$color-surface-medium:     #1C2027;  // Container-elevated
+$color-surface-light:      #252B33;  // Container-high / hover
+$color-surface-lighter:    #2D3748;  // Border / divider zone
+
+$color-on-surface:         #E2E8F0;  // Primary text on dark surfaces
+$color-on-surface-variant: #8A9BB0;  // Secondary / muted text
+$color-on-surface-muted:   #64748B;  // Disabled / hint text
+
+// ---------------------------------------------------------------------------
+// 1f. Status Colors (Semantic — outside M3 tonal system)
+// ---------------------------------------------------------------------------
+$status-active:    #38bdf8;
+$status-idle:      #2dd4bf;
+$status-thinking:  #a78bfa;
+$status-error:     #f87171;
+$status-offline:   #64748b;
+
+// Status background tints (12% opacity for badges, pills, backgrounds)
+$status-active-bg:    rgba(56, 189, 248, 0.12);
+$status-idle-bg:      rgba(45, 212, 191, 0.12);
+$status-thinking-bg:  rgba(167, 139, 250, 0.12);
+$status-error-bg:     rgba(248, 113, 113, 0.12);
+$status-offline-bg:   rgba(100, 116, 139, 0.12);
+
+// Status border colors (40% opacity)
+$status-active-border: rgba(56, 189, 248, 0.40);
+$status-idle-border:   rgba(45, 212, 191, 0.40);
+$status-thinking-border: rgba(167, 139, 250, 0.40);
+$status-error-border:  rgba(248, 113, 113, 0.40);
+$status-offline-border: rgba(100, 116, 139, 0.40);
+
+// Map for iteration
+$status-colors: (
+  'active':   ('fg': $status-active,   'bg': $status-active-bg,   'border': $status-active-border),
+  'idle':     ('fg': $status-idle,     'bg': $status-idle-bg,     'border': $status-idle-border),
+  'thinking': ('fg': $status-thinking, 'bg': $status-thinking-bg,  'border': $status-thinking-border),
+  'error':    ('fg': $status-error,    'bg': $status-error-bg,     'border': $status-error-border),
+  'offline':  ('fg': $status-offline,   'bg': $status-offline-bg,   'border': $status-offline-border),
+);
+
+// ---------------------------------------------------------------------------
+// 1g. Full color map for programmatic access
+// ---------------------------------------------------------------------------
+$colors: (
+  'primary':       $color-primary-500,
+  'secondary':     $color-secondary-400,
+  'accent':        $color-accent-400,
+  'danger':        $color-danger-400,
+  'surface':       $color-surface-dark,
+  'surface-light': $color-surface-light,
+  'on-surface':    $color-on-surface,
+  'on-surface-variant': $color-on-surface-variant,
+  'border':        $color-surface-lighter,
+);
+
+// ============================================================================
+// 2. TYPOGRAPHY TOKENS
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// 2a. Font Families
+// ---------------------------------------------------------------------------
+$font-family-brand:  'Inter, Roboto, sans-serif';
+$font-family-body:   'Inter, Roboto, sans-serif';
+$font-family-mono:   'Roboto Mono, Cascadia Code, Fira Code, monospace';
+
+// ---------------------------------------------------------------------------
+// 2b. Font Sizes (M3 type scale)
+// ---------------------------------------------------------------------------
+$font-size-display-large:  57px;
+$font-size-display-medium: 45px;
+$font-size-display-small:  36px;
+$font-size-headline-large: 32px;
+$font-size-headline-medium: 28px;
+$font-size-headline-small:  24px;
+$font-size-title-large:     22px;
+$font-size-title-medium:    16px;
+$font-size-title-small:     14px;
+$font-size-body-large:      16px;
+$font-size-body-medium:     14px;
+$font-size-body-small:      12px;
+$font-size-label-large:     14px;
+$font-size-label-medium:    12px;
+$font-size-label-small:     11px;
+
+// ---------------------------------------------------------------------------
+// 2c. Font Weights
+// ---------------------------------------------------------------------------
+$font-weight-regular: 400;
+$font-weight-medium:   500;
+$font-weight-bold:     600;
+$font-weight-heavy:    700;
+
+// ---------------------------------------------------------------------------
+// 2d. Line Heights
+// ---------------------------------------------------------------------------
+$line-height-tight:   1.2;
+$line-height-normal:   1.5;
+$line-height-relaxed:  1.6;
+
+// ---------------------------------------------------------------------------
+// 2e. Letter Spacing
+// ---------------------------------------------------------------------------
+$letter-spacing-tight:    -0.01em;
+$letter-spacing-normal:    0em;
+$letter-spacing-wide:      0.02em;
+$letter-spacing-mono:      0.05em;
+
+// ---------------------------------------------------------------------------
+// 2f. Typography map
+// ---------------------------------------------------------------------------
+$typography: (
+  'font-family-brand':  $font-family-brand,
+  'font-family-body':   $font-family-body,
+  'font-family-mono':   $font-family-mono,
+  'size-display-large': $font-size-display-large,
+  'size-headline-medium': $font-size-headline-medium,
+  'size-title-large':    $font-size-title-large,
+  'size-title-medium':   $font-size-title-medium,
+  'size-body-large':     $font-size-body-large,
+  'size-body-medium':    $font-size-body-medium,
+  'size-body-small':     $font-size-body-small,
+  'size-label-large':    $font-size-label-large,
+  'size-label-medium':   $font-size-label-medium,
+  'weight-regular':      $font-weight-regular,
+  'weight-medium':       $font-weight-medium,
+  'weight-bold':         $font-weight-bold,
+);
+
+// ============================================================================
+// 3. SPACING TOKENS (4px grid)
+// ============================================================================
+
+$spacing-0:   0px;
+$spacing-1:   4px;
+$spacing-2:   8px;
+$spacing-3:   12px;
+$spacing-4:   16px;
+$spacing-5:   20px;
+$spacing-6:   24px;
+$spacing-7:   28px;
+$spacing-8:   32px;
+$spacing-9:   36px;
+$spacing-10:  40px;
+$spacing-12:  48px;
+$spacing-14:  56px;
+$spacing-16:  64px;
+$spacing-20:  80px;
+
+// Named semantic spacing
+$spacing-unit:        $spacing-2;    // 8px — base grid unit
+$spacing-card-gap:    $spacing-4;    // 16px
+$spacing-card-pad:    $spacing-5;    // 20px
+$spacing-section:     $spacing-6;    // 24px
+
+// ============================================================================
+// 4. LAYOUT TOKENS
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// 4a. Dimensions
+// ---------------------------------------------------------------------------
+$nav-rail-collapsed-width:  72px;
+$nav-rail-expanded-width:   256px;
+$header-height:              64px;
+$bottom-nav-height:          80px;
+$card-border-radius:         16px;
+$card-min-width:             320px;
+$badge-height:               24px;
+$badge-border-radius:        12px;
+$status-dot-size:            10px;
+
+// ---------------------------------------------------------------------------
+// 4b. Breakpoints (M3 canonical)
+// ---------------------------------------------------------------------------
+$breakpoint-compact:  599px;   // Mobile phone
+$breakpoint-medium:   767px;   // Tablet portrait
+$breakpoint-expanded:  1023px;  // Tablet landscape
+$breakpoint-large:    1439px;  // Desktop
+
+// Named breakpoint map for @media mixins
+$breakpoints: (
+  'compact':  $breakpoint-compact,
+  'medium':   $breakpoint-medium,
+  'expanded': $breakpoint-expanded,
+  'large':    $breakpoint-large,
+);
+
+// ---------------------------------------------------------------------------
+// 4c. Border Radius
+// ---------------------------------------------------------------------------
+$radius-none:   0px;
+$radius-xs:     4px;
+$radius-sm:     8px;
+$radius-md:     12px;
+$radius-lg:     16px;
+$radius-xl:     24px;
+$radius-full:    9999px;
+
+// ---------------------------------------------------------------------------
+// 4d. Shadows (M3 elevation)
+// ---------------------------------------------------------------------------
+$shadow-level-0: none;
+$shadow-level-1: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
+$shadow-level-2: 0 2px 6px 0 rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
+$shadow-level-3: 0 4px 12px 0 rgba(0, 0, 0, 0.3), 0 4px 8px -4px rgba(0, 0, 0, 0.3);
+$shadow-level-4: 0 8px 24px 0 rgba(0, 0, 0, 0.3), 0 8px 16px -8px rgba(0, 0, 0, 0.3);
+
+// ============================================================================
+// 5. MOTION TOKENS
+// ============================================================================
+
+$duration-instant:   0ms;      // No animation (reduced motion fallback)
+$duration-fast:      100ms;
+$duration-short:     150ms;
+$duration-medium:    200ms;
+$duration-standard:  300ms;
+$duration-long:       500ms;
+
+$easing-standard:  cubic-bezier(0.4, 0, 0.2, 1);   // M3 standard
+$easing-decelerate: cubic-bezier(0, 0, 0.2, 1);     // M3 decelerate (entering)
+$easing-accelerate: cubic-bezier(0.4, 0, 1, 1);     // M3 accelerate (exiting)
+$easing-sharp:     cubic-bezier(0.4, 0, 0.6, 1);    // M3 sharp
+
+// ============================================================================
+// 6. ACCESSIBILITY TOKENS
+// ============================================================================
+
+$focus-ring-width:    2px;
+$focus-ring-offset:   2px;
+$focus-ring-color:    $status-active;
+$focus-ring-style:    solid;
+
+$min-touch-target:    48px;
+$min-body-font:       16px;
+
+// ============================================================================
+// MIXINS
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// Responsive breakpoint mixin
+// Usage: @include tokens.respond-to('expanded') { ... }
+// ---------------------------------------------------------------------------
+@mixin respond-to($breakpoint) {
+  $value: map.get($breakpoints, $breakpoint);
+  @if $value {
+    @media (min-width: $value + 1) {
+      @content;
+    }
+  } @else {
+    @error "Unknown breakpoint: `#{$breakpoint}`. Valid: compact, medium, expanded, large";
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Below-breakpoint mixin (max-width)
+// Usage: @include tokens.below('expanded') { ... }
+// ---------------------------------------------------------------------------
+@mixin below($breakpoint) {
+  $value: map.get($breakpoints, $breakpoint);
+  @if $value {
+    @media (max-width: $value) {
+      @content;
+    }
+  } @else {
+    @error "Unknown breakpoint: `#{$breakpoint}`. Valid: compact, medium, expanded, large";
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Focus ring mixin
+// ---------------------------------------------------------------------------
+@mixin focus-ring($color: $focus-ring-color) {
+  &:focus-visible {
+    outline: $focus-ring-width $focus-ring-style $color;
+    outline-offset: $focus-ring-offset;
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Card surface mixin
+// ---------------------------------------------------------------------------
+@mixin card-surface {
+  background-color: $color-surface-medium;
+  border-radius: $card-border-radius;
+  border: 1px solid $color-surface-lighter;
+}
+
+// ---------------------------------------------------------------------------
+// Mono text mixin
+// ---------------------------------------------------------------------------
+@mixin mono-text($size: $font-size-body-medium) {
+  font-family: $font-family-mono;
+  font-size: $size;
+  letter-spacing: $letter-spacing-mono;
+}
+
+// ---------------------------------------------------------------------------
+// Status dot mixin
+// ---------------------------------------------------------------------------
+@mixin status-dot($status) {
+  $colors: map.get($status-colors, $status);
+  @if not $colors {
+    @error "Unknown status: `#{$status}`. Valid: active, idle, thinking, error, offline";
+  }
+  $fg: map.get($colors, 'fg');
+
+  width: $status-dot-size;
+  height: $status-dot-size;
+  border-radius: $radius-full;
+  background-color: $fg;
+
+  @if $status == 'active' {
+    animation: pulse-active $duration-standard $easing-standard infinite;
+  } @else if $status == 'thinking' {
+    animation: pulse-thinking 3s $easing-standard infinite;
+  } @else if $status == 'error' {
+    animation: pulse-error $duration-fast $easing-standard infinite;
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Truncate text mixin (single line)
+// ---------------------------------------------------------------------------
+@mixin truncate {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+// ---------------------------------------------------------------------------
+// Screen-reader-only mixin
+// ---------------------------------------------------------------------------
+@mixin sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  white-space: nowrap;
+  border: 0;
+}
+
+// ---------------------------------------------------------------------------
+// Touch target mixin — ensures minimum 48px touch area
+// ---------------------------------------------------------------------------
+@mixin touch-target($min-size: $min-touch-target) {
+  min-width: $min-size;
+  min-height: $min-size;
+}
\ No newline at end of file
diff --git a/frontend/src/styles/_utilities.scss b/frontend/src/styles/_utilities.scss
new file mode 100644
index 0000000..9901928
--- /dev/null
+++ b/frontend/src/styles/_utilities.scss
@@ -0,0 +1,170 @@
+// ============================================================================
+// OpenClaw Control Center — Utility Mixins
+// ============================================================================
+// Reusable patterns that enforce design-system consistency.
+// Components should @use this module and include mixins rather than
+// writing repetitive CSS blocks.
+// ============================================================================
+
+@use 'tokens' as *;
+
+// ---------------------------------------------------------------------------
+// Elevation / Surface Card
+// Applies consistent card styling using design tokens.
+// Usage: @include utils.card-surface();
+// ---------------------------------------------------------------------------
+@mixin card-surface($elevation: 1) {
+  background-color: var(--cc-surface-medium);
+  border-radius: var(--cc-card-radius);
+  border: 1px solid var(--cc-surface-lighter);
+  box-shadow: var(--cc-shadow-#{$elevation});
+  transition: box-shadow var(--cc-duration-short) var(--cc-easing-standard);
+}
+
+// ---------------------------------------------------------------------------
+// Elevated card on hover
+// ---------------------------------------------------------------------------
+@mixin card-hover($elevation: 2) {
+  &:hover {
+    box-shadow: var(--cc-shadow-#{$elevation});
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Status-aware left border
+// Applies colored left border based on agent status.
+// Usage: @include utils.status-border('active');
+// ---------------------------------------------------------------------------
+@mixin status-border($status) {
+  $status-map: (
+    'active':   var(--cc-status-active),
+    'idle':     var(--cc-status-idle),
+    'thinking': var(--cc-status-thinking),
+    'error':    var(--cc-status-error),
+    'offline':  var(--cc-status-offline),
+  );
+  $color: map-get($status-map, $status);
+  @if not $color {
+    $color: var(--cc-status-offline);
+  }
+  border-left: 4px solid $color;
+}
+
+// ---------------------------------------------------------------------------
+// Status badge / pill
+// ---------------------------------------------------------------------------
+@mixin status-badge($status) {
+  $fg-map: (
+    'active':   var(--cc-status-active),
+    'idle':     var(--cc-status-idle),
+    'thinking': var(--cc-status-thinking),
+    'error':    var(--cc-status-error),
+    'offline':  var(--cc-status-offline),
+  );
+  $bg-map: (
+    'active':   var(--cc-status-active-bg),
+    'idle':     var(--cc-status-idle-bg),
+    'thinking': var(--cc-status-thinking-bg),
+    'error':    var(--cc-status-error-bg),
+    'offline':  var(--cc-status-offline-bg),
+  );
+
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  height: $badge-height;
+  padding: 0 8px;
+  border-radius: $badge-border-radius;
+  background-color: map-get($bg-map, $status);
+  color: map-get($fg-map, $status);
+  font-size: $font-size-label-medium;
+  font-weight: $font-weight-medium;
+  white-space: nowrap;
+}
+
+// ---------------------------------------------------------------------------
+// Glass surface (frosted glass effect)
+// ---------------------------------------------------------------------------
+@mixin glass-surface {
+  background-color: rgba(19, 22, 26, 0.8);
+  backdrop-filter: blur(8px);
+  -webkit-backdrop-filter: blur(8px);
+  border: 1px solid var(--cc-surface-lighter);
+}
+
+// ---------------------------------------------------------------------------
+// Responsive grid
+// Creates a responsive grid that adapts from 1-col to 2-col.
+// ---------------------------------------------------------------------------
+@mixin responsive-grid($min-col-width: $card-min-width, $gap: $spacing-card-gap) {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax($min-col-width, 1fr));
+  gap: $gap;
+}
+
+// ---------------------------------------------------------------------------
+// Scroll container
+// ---------------------------------------------------------------------------
+@mixin scroll-container($direction: 'y') {
+  @if $direction == 'y' {
+    overflow-y: auto;
+    overflow-x: hidden;
+  } @else {
+    overflow-x: auto;
+    overflow-y: hidden;
+  }
+  -webkit-overflow-scrolling: touch;
+
+  // Custom scrollbar (tactical dark)
+  &::-webkit-scrollbar {
+    width: 6px;
+    height: 6px;
+  }
+  &::-webkit-scrollbar-track {
+    background: var(--cc-surface-dark);
+  }
+  &::-webkit-scrollbar-thumb {
+    background: var(--cc-surface-lighter);
+    border-radius: 3px;
+    &:hover {
+      background: var(--cc-on-surface-variant);
+    }
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Page container
+// Standard page padding and layout
+// ---------------------------------------------------------------------------
+@mixin page-container {
+  padding: $spacing-section;
+  min-height: 400px;
+  overflow-x: hidden;
+}
+
+// ---------------------------------------------------------------------------
+// Transition helpers
+// ---------------------------------------------------------------------------
+@mixin transition-colors($duration: $duration-short) {
+  transition: color #{$duration} $easing-standard,
+              background-color #{$duration} $easing-standard,
+              border-color #{$duration} $easing-standard;
+}
+
+@mixin transition-transform($duration: $duration-medium) {
+  transition: transform #{$duration} $easing-standard;
+}
+
+@mixin transition-opacity($duration: $duration-short) {
+  transition: opacity #{$duration} $easing-standard;
+}
+
+// ---------------------------------------------------------------------------
+// Reduced motion
+// Wraps content in a reduced-motion media query.
+// ---------------------------------------------------------------------------
+@mixin reduced-motion {
+  @media (prefers-reduced-motion: reduce) {
+    @content;
+  }
+}
\ No newline at end of file