Frontend Development

Use when creating or modifying Next.js pages, React components, Tailwind CSS styles, API integration, hooks, or i18n.

Before Writing Code

1. Read docs/agent/architecture/frontend-workflow.md for user flow
2. Read docs/agent/design/style-guide.md for Swiss International Style (REQUIRED)
3. Read docs/agent/coding-standards.md for conventions
4. Check existing components in apps/frontend/components/

Non-Negotiable Rules

1. Swiss International Style - ALL UI changes must follow it
2. rounded-none everywhere - no rounded corners, ever
3. Hard shadows - shadow-[4px_4px_0px_0px_#000000], never soft shadows
4. Run npm run lint before committing
5. Run npm run format before committing
6. Enter key handling on all textareas

Swiss International Style Quick Reference

Element	Value
Canvas bg	#F0F0E8 / bg-[#F0F0E8]
Ink text	#000000
Hyper Blue	#1D4ED8 / text-blue-700
Signal Green	#15803D / text-green-700
Alert Red	#DC2626 / text-red-600
Headers	font-serif
Body	font-sans
Labels	font-mono text-sm uppercase tracking-wider
Borders	rounded-none border-2 border-black
Shadows	shadow-[4px_4px_0px_0px_#000000]
Hover	hover:translate-y-[1px] hover:translate-x-[1px] hover:shadow-none

Anti-Patterns (NEVER)

• rounded-* (except rounded-none)
• Gradients or blur shadows
• Colors outside the palette
• Pastel or soft colors
• Decorative icons without function

Patterns

New Component

'use client';

interface MyComponentProps {
  title: string;
  onAction: () => void;
}

export function MyComponent({ title, onAction }: MyComponentProps) {
  return (
    <div className="bg-white border-2 border-black shadow-[4px_4px_0px_0px_#000000] p-6">
      <h3 className="font-serif text-xl mb-4">{title}</h3>
      <button
        onClick={onAction}
        className="rounded-none border-2 border-black px-4 py-2 bg-blue-700 text-white shadow-[2px_2px_0px_0px_#000000] hover:translate-y-[1px] hover:translate-x-[1px] hover:shadow-none transition-all"
      >
        Action
      </button>
    </div>
  );
}

Textarea (Enter key fix)

const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
  if (e.key === 'Enter') e.stopPropagation();
};

<textarea onKeyDown={handleKeyDown} className="w-full rounded-none border-2 border-black p-3 font-sans" />

Bundle Optimization

// Direct icon import (NOT barrel import)
import FileText from 'lucide-react/dist/esm/icons/file-text';

// Dynamic import for heavy components
import dynamic from 'next/dynamic';
const PDFViewer = dynamic(() => import('./PDFViewer'), { ssr: false });

API Integration

// Use Promise.all for independent fetches
const [resumes, jobs] = await Promise.all([
  api.get('/api/v1/resumes'),
  api.get('/api/v1/jobs'),
]);

Checklist

• npm run lint passes
• npm run format run
• rounded-none on all elements
• Hard shadows, Swiss palette only
• Correct typography (serif headers, mono labels, sans body)
• Textareas have Enter key handler
• Icons imported directly, heavy components use next/dynamic
• Independent fetches use Promise.all()