Frontend Design Skill

Purpose

Provide design system knowledge, component patterns, and UI best practices for frontend development.

Capabilities

Design System Reference

Access to common design patterns:

• Component libraries (shadcn/ui, Radix, Headless UI)
• CSS frameworks (Tailwind, CSS Modules)
• Animation libraries (Framer Motion, CSS transitions)
• Icon systems (Lucide, Heroicons)

Component Patterns

// Card Pattern
<Card>
  <CardHeader>
    <CardTitle>Title</CardTitle>
    <CardDescription>Description</CardDescription>
  </CardHeader>
  <CardContent>Content</CardContent>
  <CardFooter>Actions</CardFooter>
</Card>

// Form Pattern
<Form onSubmit={handleSubmit}>
  <FormField>
    <FormLabel>Label</FormLabel>
    <FormInput />
    <FormError />
  </FormField>
  <Button type="submit">Submit</Button>
</Form>

Layout Patterns

// Page Layout
<div className="min-h-screen flex flex-col">
  <Header />
  <main className="flex-1">
    <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
      {children}
    </div>
  </main>
  <Footer />
</div>

// Sidebar Layout
<div className="flex h-screen">
  <aside className="w-64 border-r">Sidebar</aside>
  <main className="flex-1 overflow-auto">Content</main>
</div>

Spacing System

Name	Value	Use Case
space-1	4px	Tight grouping
space-2	8px	Related elements
space-4	16px	Section padding
space-6	24px	Card padding
space-8	32px	Section gaps
space-12	48px	Major sections

Color Usage

// Semantic Colors
text-foreground     // Primary text
text-muted-foreground // Secondary text
bg-background       // Page background
bg-card            // Card background
bg-primary         // Primary actions
bg-destructive     // Destructive actions
border             // Default borders
ring               // Focus rings

Typography Scale

// Headings
<h1 className="text-4xl font-bold tracking-tight">H1</h1>
<h2 className="text-3xl font-semibold">H2</h2>
<h3 className="text-2xl font-semibold">H3</h3>
<h4 className="text-xl font-semibold">H4</h4>

// Body
<p className="text-base leading-7">Body</p>
<p className="text-sm text-muted-foreground">Small</p>
<p className="text-xs">Extra small</p>

Interactive States

// Button States
<button className="
  bg-primary text-primary-foreground
  hover:bg-primary/90
  focus-visible:outline-none focus-visible:ring-2
  focus-visible:ring-ring focus-visible:ring-offset-2
  disabled:pointer-events-none disabled:opacity-50
  transition-colors
">
  Button
</button>

Animation Patterns

// Fade in
<motion.div
  initial={{ opacity: 0 }}
  animate={{ opacity: 1 }}
  transition={{ duration: 0.3 }}
>

// Slide up
<motion.div
  initial={{ opacity: 0, y: 20 }}
  animate={{ opacity: 1, y: 0 }}
>

// CSS Transition
<div className="transition-all duration-200 ease-in-out">

Responsive Patterns

// Mobile-first
<div className="
  flex flex-col
  sm:flex-row
  lg:grid lg:grid-cols-3
  gap-4 sm:gap-6 lg:gap-8
">

// Hide/Show
<div className="hidden md:block">Desktop only</div>
<div className="md:hidden">Mobile only</div>

Usage

// Access design tokens
skill.getSpacing('lg')      // Returns '32px'
skill.getColor('primary')   // Returns color value
skill.getComponent('Card')  // Returns component pattern

Integration

Used by:

• design-iterator agent for UI refinement
• design-implementation-reviewer for pattern checking
• /kreativreason:work for frontend tasks