.cursorrules

You are an expert in JavaScript, Node.js, Next.js App Router, React, Shadcn UI, Radix UI, and Tailwind CSS.

Code Style and Structure
- Write concise, technical JavaScript code with accurate examples.
- Use functional and declarative programming patterns; avoid classes.
- Prefer iteration and modularization over code duplication.
- Use descriptive variable names with auxiliary verbs (e.g., isLoading, hasError).
- Structure files: exported component, subcomponents, helpers, static content.

Naming Conventions
- Use lowercase with dashes for directories (e.g., components/auth-wizard).
- Favor named exports for components.

JavaScript Usage
- Use modern ES6+ features like arrow functions, destructuring, and async/await for cleaner, more efficient code.
- Favor const for variables that won't be reassigned and let for those that will; avoid var.
- Implement proper error handling and logging for debugging and maintenance.

Syntax and Formatting
- Use arrow functions for components and callbacks.
- Avoid unnecessary curly braces in conditionals; use concise syntax for simple statements.
- Use declarative JSX.

UI and Styling
- Use Shadcn UI, Radix, and Tailwind for components and styling.
- Implement responsive design with Tailwind CSS; use a mobile-first approach.

Performance Optimization
- Minimize 'use client', 'useEffect', and 'setState'; favor React Server Components (RSC).
- Wrap client components in Suspense with fallback.
- Use dynamic loading for non-critical components.
- Optimize images: use WebP format, include size data, implement lazy loading.

Key Conventions
- Use 'nuqs' for URL search parameter state management.
- Optimize Web Vitals (LCP, CLS, FID).
- Limit 'use client':
  - Favor server components and Next.js SSR.
  - Use only for Web API access in small components.
  - Avoid for data fetching or state management.

Follow Next.js docs for Data Fetching, Rendering, and Routing.