name: design-system description: RemoteViewer.Client design system with spacing, colors, typography, and components. Use when building UI, styling components, or working with Avalonia XAML.

Design System

The client uses a comprehensive design system with markup extensions, design tokens, and reusable components. All UI should use these tokens instead of hardcoded values.

Markup Extensions

Located in Themes/ folder. Add xmlns:theme="using:RemoteViewer.Client.Themes" to use.

Spacing (Margin/Padding)

Padding="{theme:Spacing MD}"              <!-- All sides: 12 -->
Margin="{theme:Spacing X=LG, Y=SM}"       <!-- Horizontal: 16, Vertical: 8 -->
Margin="{theme:Spacing Top=XL, Right=MD}" <!-- Individual sides -->

Values: None=0, XXS=2, XS=4, SM=8, MD=12, LG=16, XL=24, XXL=32

The same extension works for Spacing (double) and GridLength properties:

<StackPanel Spacing="{theme:Spacing SM}">           <!-- 8px between items -->
<ColumnDefinition Width="{theme:Spacing SM}"/>      <!-- 8px spacer column -->

Design Tokens

Colors (use DynamicResource for theme support)

• Muted text: SystemControlDisabledBaseMediumLowBrush (Avalonia built-in)
• Accent: AccentButtonBackground, AccentButtonForeground (Avalonia built-in)
• Surfaces: SurfaceElevatedBrush, SurfaceOverlayBrush, CardBackgroundBrush
• Semantic: SuccessBrush, ErrorBrush, WarningBrush

Typography Classes

Apply via Classes="class-name" on TextBlock:

• Headings: h1 (22px Bold), h2 (15px SemiBold), h3 (13px SemiBold)
• Small text: m1 (12px), m2 (10px)
• Special: credential (18px Bold monospace)
• Color modifier: muted

Button Styles

All buttons automatically get CornerRadius="6" from the base style.

<Button>                             <!-- Default button (uses Avalonia defaults) -->
<Button Classes="accent">            <!-- Accent/primary button (Avalonia built-in) -->
<Button Classes="icon-button">       <!-- 32x32 transparent icon button for toolbars -->

Card Component (Controls/Card.axaml)

A flexible card container with size options.

<controls:Card>                <!-- Default: 8px radius, 14px padding -->
<controls:Card Size="Large">   <!-- 12px radius, 16px padding -->
<controls:Card Size="XLarge">  <!-- 20px radius, 32x28 padding (for overlays) -->
<controls:Card Size="ListItem"><!-- Uses SurfaceOverlayBrush background -->

Icon Component (Controls/Icon.axaml)

A unified icon control with optional badge mode.

<controls:Icon Kind="Check" Size="MD"/>                    <!-- 24px icon -->
<controls:Icon Kind="Check" Size="LG" ShowAsBadge="True"/> <!-- Icon in circular badge -->

Properties:

• Kind: MaterialIconKind enum value
• Size: XXS (12px), XS (16px), SM (20px), MD (24px), LG (32px), XL (40px), XXL (48px)
• ShowAsBadge: When true, displays icon in a circular background
• BadgeBackground: Custom badge background brush (defaults to BadgeBackgroundBrush)

Components

• Card: Flexible container with size options (Controls/Card.axaml)
• Icon: Unified icon with size presets and optional badge mode (Controls/Icon.axaml)
• DialogHeader: Standardized dialog header with icon, title, subtitle (Controls/DialogHeader.axaml)