# Personal Website - AI Assistant Rules

## Project Overview
This is a professional personal website and academic portfolio built with Next.js 15, TypeScript, Tailwind CSS, and shadcn/ui components. The site showcases academic achievements, research publications, projects, and professional experience. This is a content-focused static website where accuracy, professionalism, and accessibility are paramount.

## Core Development Principles

### 1. Content-First Approach
- **Priority**: Accuracy and professionalism over flashy features
- **Content Integrity**: All information must be factually accurate and match CV/resume
- **User Experience**: Clean, accessible, and intuitive navigation
- **Performance**: Fast loading times and optimal Core Web Vitals
- **Accessibility**: WCAG compliant design for all users

### 2. Type Safety & Code Quality
- **TypeScript**: Use strict TypeScript for all new code
- **Static Typing**: Define interfaces for all data structures
- **Validation**: Validate all external data sources
- **Error Boundaries**: Implement proper error handling at all levels

## Tech Stack Guidelines

### Frontend (Next.js 15 + App Router)
- Use App Router patterns consistently
- Implement proper loading states and error boundaries
- Follow Next.js 15 best practices for performance
- Use React Server Components where appropriate
- Leverage static generation for optimal performance

### Content Management (Static Data)
- Store content data in `src/lib/data.ts`
- Use TypeScript interfaces for all content types
- Implement proper data validation
- Maintain content accuracy across all pages

### Styling & UI (Tailwind CSS + shadcn/ui)
- Use shadcn/ui components as the foundation
- Follow Tailwind CSS utility-first approach
- Implement responsive design (mobile-first)
- Support system-based dark mode

### Development Tools
- Use ESLint and Prettier for code formatting
- Use TypeScript for type safety
- Run lints and typechecks when helpful
- Avoid starting development servers unless absolutely necessary

## Component Architecture

### UI Components (shadcn/ui)
- Use shadcn/ui components as the foundation
- Follow existing component patterns
- Use `cn()` utility for conditional className merging
- Maintain consistent spacing (4px grid system)

### Component Organization
- **Base UI Components**: `src/components/ui/` - Pure, portable shadcn/ui components
- **Project Components**: `src/components/` - Project-specific reusable components
- **Page Components**: Page-specific components within respective page files

### UI Component Rules

#### What Belongs in `src/components/ui/` (Portable)
- **Pure shadcn/ui components**: button, input, select, dialog, etc.
- **Generic layout components**: card, skeleton, progress
- **Basic form components**: input, textarea, checkbox, switch
- **Navigation components**: breadcrumb, tabs
- **Feedback components**: badge, toast
- **Data display**: table, skeleton, progress
- **Overlay components**: dialog, sheet, popover, dropdown-menu

#### What Should Stay in `src/components/` (Project-Specific)
- **Navigation**: Navigation, Sidebar, PageBreadcrumb, BreadcrumbWrapper
- **Content Display**: AccessibleVideo, Footer
- **Layout**: Any site-specific layout components
- **Feature Components**: CV PDF viewer, project cards, publication lists

#### Component Design Principles
- **High Reusability**: Components should accept props for customization
- **Composition over Inheritance**: Use children props and render props
- **Default Values**: Provide sensible defaults for all optional props
- **Type Safety**: Use TypeScript interfaces for all props
- **Accessibility**: Include proper ARIA labels and keyboard navigation
- **Responsive Design**: Mobile-first approach with responsive variants

#### Component Props Pattern
```typescript
interface ComponentProps {
  // Required props
  title: string;

  // Optional props with defaults
  variant?: "default" | "secondary" | "outline";
  size?: "sm" | "md" | "lg";

  // Styling props
  className?: string;

  // Event handlers
  onClick?: () => void;
  onChange?: (value: string) => void;

  // Content
  children?: React.ReactNode;

  // Accessibility
  "aria-label"?: string;
}
```

### Styling Guidelines
- **Primary Color**: Use consistent primary color for branding
- **Typography**: Professional typography hierarchy
- **Tailwind CSS**: Use utility classes consistently
- **Dark Mode**: System preference-based dark mode support
- **Responsive Design**: Mobile-first approach

## Content Management Patterns

### Data Structure (src/lib/data.ts)
```typescript
// Follow this pattern for all content types
interface Project {
  title: string;
  description: string;
  longDescription?: string;
  image?: string;
  imageAlt?: string;
  link?: string;
  tags: string[];
  featured: boolean;
}

interface Publication {
  title: string;
  authors: string[];
  venue: string;
  year: number;
  type: "conference" | "journal" | "workshop" | "thesis";
  abstract?: string;
  paperUrl?: string;
  doi?: string;
}
```

### Content Accuracy Rules
- **CV Synchronization**: All content must match the current CV/resume
- **Factual Accuracy**: No embellishments or inaccurate information
- **Professional Tone**: Maintain academic and professional language
- **Regular Updates**: Keep content current with latest achievements

### External Content Integration
- **PDF Documents**: Use secure proxy for GitHub-hosted PDFs
- **Media Files**: Optimize images and videos for web delivery
- **External Links**: Validate all external links regularly
- **Citations**: Proper citation format for publications

## Page Structure Patterns

### Standard Page Header
All pages should follow this consistent header pattern:
```typescript
<section className="prose prose-zinc dark:prose-invert max-w-none">
  <div className="flex items-start gap-3">
    <IconComponent className="h-8 w-8 text-primary" />
    <div>
      <h1 className="mb-2 text-2xl font-bold">Page Title</h1>
    </div>
  </div>
  <p className="mt-2 text-lg text-muted-foreground">
    Page description
  </p>
</section>
```

### Navigation Consistency
- **Icons**: Use consistent icons between navigation and breadcrumbs
- **Routing**: Follow Next.js App Router conventions
- **Active States**: Clear indication of current page
- **Mobile Navigation**: Responsive mobile menu

### Content Sections
- **Consistent Spacing**: Use standardized spacing between sections
- **Loading States**: Implement skeleton loaders for dynamic content
- **Empty States**: Handle cases with no content gracefully
- **Error States**: Provide clear error messages and recovery options

## Icon System

### Navigation Icons (Lucide React)
- **Home**: `Home` icon
- **Articles**: `Newspaper` icon
- **Projects**: `FolderGit2` icon
- **Publications**: `BookOpenText` icon
- **Travel**: `Plane` icon
- **CV**: `FileText` icon
- **Accessibility**: `Accessibility` icon

### Icon Usage Rules
- Use consistent icon sizes (h-8 w-8 for headers, h-4 w-4 for small elements)
- Apply `text-primary` class for header icons
- Maintain consistency between navigation and breadcrumbs
- Use semantic icons that clearly represent content

## File Naming Conventions

### Pages & Components
- **Pages**: kebab-case (e.g., `latex-intro/page.tsx`)
- **Components**: PascalCase (e.g., `AccessibleVideo.tsx`)
- **Layouts**: `layout.tsx` (Next.js convention)
- **API Routes**: `route.ts` (Next.js convention)

### Assets & Content
- **Images**: kebab-case (e.g., `project-thumbnail.jpg`)
- **Videos**: kebab-case (e.g., `latex-intro.mp4`)
- **Documents**: kebab-case (e.g., `academic-cv.pdf`)
- **Data Files**: camelCase (e.g., `publications.bib`)

### Utilities & Helpers
- **Utilities**: camelCase (e.g., `formatDate.ts`)
- **Constants**: UPPER_SNAKE_CASE
- **Types**: PascalCase (e.g., `ProjectType`)

## Development Workflow

### Adding New Content
1. **Data Update**: Update content in `src/lib/data.ts`
2. **Type Definitions**: Update TypeScript interfaces
3. **UI Implementation**: Create/update components
4. **Page Integration**: Implement in appropriate pages
5. **Testing**: Verify functionality and accessibility

### Code Quality
- **ESLint**: Follow existing linting rules
- **Prettier**: Consistent code formatting
- **TypeScript**: Strict type checking
- **Performance**: Optimize images and components

## Content Types & Management

### Publications
- **BibTeX Integration**: Parse and display academic publications
- **Citation Formats**: Proper academic citation formatting
- **DOI Links**: Link to official publication sources
- **PDF Access**: Secure hosting and viewing of papers

### Projects
- **Featured Projects**: Highlight most important work
- **Project Categories**: Academic, professional, and personal projects
- **Media Integration**: Screenshots, videos, and demonstrations
- **Technology Tags**: Clear indication of technologies used

### CV/Resume Management
- **PDF Rendering**: High-quality PDF.js implementation
- **Version Control**: Track CV updates with timestamps
- **Multiple Formats**: Support both academic CV and professional resume
- **Download Options**: Easy access to latest versions

### Travel & Personal Content
- **Image Optimization**: Compress and optimize travel photos
- **Content Curation**: Select meaningful and professional content
- **Privacy Considerations**: Avoid overly personal information

## Performance Guidelines

### Image Optimization
- Use Next.js Image component for all images
- Implement proper alt text for accessibility
- Compress images for web delivery
- Use responsive image loading

### Loading Performance
- Implement skeleton loading states
- Use React.memo for expensive components
- Optimize bundle size with proper imports
- Leverage Next.js static optimization

### Accessibility
- **WCAG Compliance**: Follow WCAG 2.1 AA guidelines
- **Keyboard Navigation**: Ensure full keyboard accessibility
- **Screen Readers**: Proper ARIA labels and semantic HTML
- **Color Contrast**: Maintain sufficient contrast ratios
- **Focus Management**: Clear focus indicators

## Security & Privacy

### Content Security
- **External Links**: Validate all external links
- **PDF Security**: Secure proxy for document access
- **Personal Information**: Limit exposure of personal details
- **Professional Boundaries**: Maintain professional presentation

### Performance Security
- **Content Validation**: Validate all external content
- **Safe Rendering**: Prevent XSS in dynamic content
- **External Resources**: Use trusted CDNs and sources

## SEO & Meta Data

### Page Metadata
- **Title Tags**: Descriptive and professional titles
- **Meta Descriptions**: Clear page descriptions
- **Open Graph**: Proper social media previews
- **Structured Data**: Academic and professional markup

### Content Optimization
- **URL Structure**: Clean and descriptive URLs
- **Internal Linking**: Proper cross-page navigation
- **Content Hierarchy**: Clear heading structure
- **Loading Speed**: Optimize for search engine performance

## Testing & Quality Assurance

### Manual Testing Checklist
- [ ] All navigation links work correctly
- [ ] Responsive design on all screen sizes
- [ ] Dark mode functions properly
- [ ] PDF viewing works correctly
- [ ] All external links are functional
- [ ] Accessibility features work as expected
- [ ] Content accuracy verified against CV

### Code Review Guidelines
- Check for proper error handling
- Verify type safety and TypeScript compliance
- Ensure consistent styling and spacing
- Review accessibility implementation
- Validate content accuracy

## Content Update Procedures

### Regular Maintenance
- **Content Review**: Quarterly review of all content
- **Link Validation**: Check all external links monthly
- **CV Synchronization**: Update website when CV changes
- **Performance Monitoring**: Regular performance audits

### Publication Updates
- **New Publications**: Add to publications.bib immediately
- **Citation Updates**: Maintain proper citation formats
- **PDF Updates**: Update hosted documents as needed
- **Archive Management**: Maintain historical accuracy

## Common Patterns & Anti-Patterns

### ✅ Do's
- Keep content accurate and professional
- Use consistent component patterns
- Implement proper loading states
- Follow accessibility guidelines
- Maintain responsive design
- Use semantic HTML and proper TypeScript

### ❌ Don'ts
- Don't add inaccurate or embellished content
- Don't skip accessibility considerations
- Don't ignore responsive design
- Don't use hardcoded content where data structures exist
- Don't skip proper error handling
- Don't start unnecessary development servers

## Emergency Procedures

### Content Issues
- **Inaccurate Information**: Immediate correction required
- **Broken Links**: Priority fix for external resources
- **Performance Issues**: Optimize images and components
- **Accessibility Problems**: High priority accessibility fixes

### Technical Issues
- **Build Failures**: Check TypeScript and ESLint errors
- **Performance Degradation**: Audit and optimize components
- **Browser Compatibility**: Test across major browsers

## Remember
This is a professional academic and personal website where accuracy, accessibility, and professional presentation are critical. Every decision should prioritize these values over development convenience or flashy features.

- Exclusively use bun, not any other runtime. no npm commands.
- Don't create demo content unless absolutely necessary
- Don't add inaccurate or embellished information
- Don't run builds unless absolutely necessary
- Don't start new dev servers unless asked
- Always verify content accuracy against source documents
- Maintain professional and academic standards in all content