# Component Design Specifications

This directory contains detailed design specifications for each component in the leptos-shadcn-ui library. Each design file is kept under 300 lines for optimal LLM comprehension and maintainability.

## Design File Structure

Each component follows this standardized design template:

```
component-name.md
├── Overview & Purpose
├── API Specification  
├── Behavioral Requirements
├── Accessibility Requirements
├── Styling & Theming
├── Testing Strategy
├── Implementation Notes
└── Examples & Usage
```

## Component Categories

### Core Components (Priority 1)
- [Button](button.md) - Primary interaction element
- [Input](input.md) - Form input with validation  
- [Label](label.md) - Accessible form labels
- [Card](card.md) - Content container
- [Badge](badge.md) - Status indicators

### Form Components (Priority 2)  
- [Checkbox](checkbox.md) - Boolean form inputs
- [Switch](switch.md) - Toggle controls
- [Radio Group](radio-group.md) - Single-choice selections
- [Select](select.md) - Dropdown selections
- [Textarea](textarea.md) - Multi-line text input

### Layout Components (Priority 3)
- [Separator](separator.md) - Visual dividers
- [Tabs](tabs.md) - Tabbed interfaces  
- [Accordion](accordion.md) - Collapsible content
- [Table](table.md) - Data presentation
- [Grid](grid.md) - Layout system

### Overlay Components (Priority 4)
- [Dialog](dialog.md) - Modal dialogs
- [Popover](popover.md) - Contextual overlays
- [Tooltip](tooltip.md) - Hover information
- [Sheet](sheet.md) - Side panels
- [Toast](toast.md) - Notifications

## Design Principles

### 1. Accessibility First
All components must meet WCAG 2.1 AA standards:
- Keyboard navigation support
- Screen reader compatibility  
- Focus management
- Semantic HTML structure
- ARIA attributes where needed

### 2. Performance Optimized
- Lazy loading where appropriate
- Minimal bundle size impact
- Efficient re-rendering
- Memory leak prevention

### 3. Developer Experience
- Type-safe APIs with comprehensive TypeScript/Rust types
- Clear error messages
- Extensive documentation
- Consistent prop patterns

### 4. Responsive & Themeable
- Mobile-first responsive design
- Dark/light mode support
- Customizable design tokens
- CSS-in-Rust styling approach

## Implementation Status

| Component | Design | Implementation | Tests | Documentation | Status |
|-----------|---------|---------------|-------|---------------|---------|
| Button | ✅ | ⚠️ Partial | ❌ Stubs | ❌ Missing | In Progress |
| Input | ✅ | ⚠️ Partial | ❌ Stubs | ❌ Missing | In Progress |  
| Card | ✅ | ❌ Stub | ❌ Stubs | ❌ Missing | Not Started |
| Badge | ✅ | ✅ Complete | ⚠️ Basic | ❌ Missing | Ready |
| Label | ✅ | ✅ Complete | ⚠️ Basic | ❌ Missing | Ready |

### Legend
- ✅ Complete and production ready
- ⚠️ Partial implementation or needs improvement  
- ❌ Missing or stub implementation

## Quality Gates

Before marking a component as "Complete":

### Design Phase
- [ ] Design spec under 300 lines
- [ ] API specification defined
- [ ] Accessibility requirements documented
- [ ] Test strategy outlined
- [ ] Examples provided

### Implementation Phase  
- [ ] Component renders correctly
- [ ] All props work as specified
- [ ] Event handlers function properly
- [ ] Styling matches design system
- [ ] No accessibility violations

### Testing Phase
- [ ] Unit tests cover all functionality
- [ ] Integration tests verify behavior  
- [ ] Accessibility tests pass
- [ ] Performance benchmarks meet targets
- [ ] Cross-browser testing complete

### Documentation Phase
- [ ] API documentation complete
- [ ] Usage examples provided
- [ ] Storybook entries created
- [ ] Migration guides written (if applicable)

## Contributing

When adding new component designs:

1. Use the [Component Design Template](template.md)
2. Keep files under 300 lines
3. Follow accessibility guidelines
4. Include comprehensive test strategies
5. Provide realistic usage examples

## Review Process

All design specs require review from:
- **Design Lead**: UX/UI consistency and usability
- **Accessibility Expert**: WCAG compliance and inclusive design
- **Staff Engineer**: Technical feasibility and architecture
- **Product Manager**: Feature completeness and user needs
