# CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

## Project Overview

Personal portfolio website for Dennis Konkol (dk0.dev). Built with Next.js 15 (App Router), TypeScript, Tailwind CSS, and Framer Motion. Uses a "Liquid Editorial Bento" design system with soft gradient colors and glassmorphism effects.

## Tech Stack

- **Framework**: Next.js 15 (App Router), TypeScript 5.9, React 19
- **Styling**: Tailwind CSS 3.4 with custom `liquid-*` color tokens
- **Theming**: `next-themes` for Dark Mode support (system/light/dark)
- **Animations**: Framer Motion 12
- **3D**: Three.js + React Three Fiber + `@shadergradient/react` (shader gradient background)
- **Database**: PostgreSQL via Prisma ORM
- **Cache**: Redis (optional)
- **CMS**: Directus (self-hosted, GraphQL only, optional)
- **Automation**: n8n webhooks (status, chat, hardcover, image generation)
- **i18n**: next-intl (EN + DE), message files in `messages/`
- **Deployment**: Docker + Nginx, CI via Gitea Actions (`output: "standalone"`)

## Commands

```bash
npm run dev          # Full dev environment (Docker + Next.js)
npm run dev:simple   # Next.js only (no Docker)
npm run dev:next     # Plain Next.js dev server
npm run build        # Production build
npm run lint         # ESLint (0 errors required, warnings OK)
npm run lint:fix     # Auto-fix lint issues
npm run test         # All Jest unit tests
npx jest path/to/test.tsx  # Run a single test file
npm run test:watch   # Watch mode
npm run test:e2e     # Playwright E2E tests
npm run db:generate  # Regenerate Prisma client after schema changes
```

## Architecture

### Server/Client Component Split

The homepage uses a **server component orchestrator** pattern:

- `app/_ui/HomePageServer.tsx` — async server component, fetches all translations in parallel via `Promise.all`, renders Hero directly, wraps below-fold sections in `ScrollFadeIn`
- `app/components/Hero.tsx` — **server component** (no `"use client"`), uses `getTranslations()` from `next-intl/server`
- `app/components/ClientWrappers.tsx` — exports `AboutClient`, `ProjectsClient`, `ContactClient`, `FooterClient`; each wraps its component in a scoped `NextIntlClientProvider` with only the needed translation namespace
- `app/components/ClientProviders.tsx` — root client wrapper, defers Three.js/WebGL via `requestIdleCallback` (5s timeout) to avoid blocking LCP

### SSR Animation Safety

**Never use Framer Motion's `initial={{ opacity: 0 }}` on SSR-rendered elements** — it bakes `style="opacity:0"` into HTML, making content invisible if JS hydration fails or is slow.

Use `ScrollFadeIn` (`app/components/ScrollFadeIn.tsx`) instead: renders no inline style during SSR, applies opacity+transform only after `hasMounted` check via IntersectionObserver + CSS transitions.

`AnimatePresence` is fine for modals/overlays that only render after user interaction.

### Data Source Fallback Chain

Every data fetch degrades gracefully — the site never crashes:

1. **Directus CMS** (if `DIRECTUS_STATIC_TOKEN` configured) → 2. **PostgreSQL** → 3. **JSON files** (`messages/*.json`) → 4. **Hardcoded defaults** → 5. **i18n key itself**

### CMS Integration (Directus)

- GraphQL via `lib/directus.ts` — no Directus SDK, uses `directusRequest()` with 2s timeout
- Returns `null` on failure, never throws
- Collections: `tech_stack_categories`, `tech_stack_items`, `hobbies`, `content_pages`, `projects`, `book_reviews`
- Translations use Directus native M2O system; locale mapping: `en` → `en-US`, `de` → `de-DE`
- API routes must export `runtime = 'nodejs'`, `dynamic = 'force-dynamic'`, and include a `source` field in the response (`"directus"` | `"fallback"` | `"error"`)

### n8n Integration

- Webhook proxies in `app/api/n8n/` (status, chat, hardcover, generate-image)
- Auth via `N8N_SECRET_TOKEN` and/or `N8N_API_KEY` headers
- All endpoints have rate limiting and 10s timeout
- Hardcover reading data cached 5 minutes

## Design System

Custom Tailwind colors prefixed with `liquid-`:
- `liquid-sky`, `liquid-mint`, `liquid-lavender`, `liquid-pink`
- `liquid-rose`, `liquid-peach`, `liquid-coral`, `liquid-teal`, `liquid-lime`

Cards: `bg-gradient-to-br from-liquid-*/15 via-liquid-*/10 to-liquid-*/15` with `backdrop-blur-sm`, `border-2`, `rounded-xl`.

Typography: Headlines uppercase, `tracking-tighter`, accent dot at end (`<span className="text-emerald-600">.</span>`).

Accessibility: Use `text-stone-600 dark:text-stone-400` (not `text-stone-400` alone) for body text — contrast ratio must be ≥4.5:1.

## Conventions

- **TypeScript**: No `any` — use interfaces from `lib/directus.ts` or `types/`
- **Components**: PascalCase files in `app/components/`; every async component needs a Skeleton loading state
- **API routes**: kebab-case directories in `app/api/`
- **i18n**: Always add keys to both `messages/en.json` and `messages/de.json`; `useTranslations()` in client, `getTranslations()` in server components
- **Error logging**: `console.error` only when `process.env.NODE_ENV === "development"`
- **Commit messages**: Conventional Commits (`feat:`, `fix:`, `chore:`)
- **No emojis** in code unless explicitly requested

## Testing Notes

- Jest with JSDOM; `jest.setup.ts` mocks `window.matchMedia`, `IntersectionObserver`, and `NextResponse`
- ESM modules (react-markdown, remark-*, etc.) handled via `transformIgnorePatterns` in `jest.config.ts`
- Server component tests: `const resolved = await Component({ props }); render(resolved)`
- Test mocks for `next/image`: use `eslint-disable-next-line @next/next/no-img-element` on the `<img>` tag

## Deployment & CI/CD

- `output: "standalone"` in `next.config.ts`
- Entrypoint: `scripts/start-with-migrate.js` — waits for DB, runs migrations (non-fatal), starts server
- CI/CD: `.gitea/workflows/ci.yml` — `test-build` (all branches), `deploy-dev` (dev branch only), `deploy-production` (production branch only)
- **Branches**: `dev` → testing.dk0.dev | `production` → dk0.dev
- Dev and production share the same PostgreSQL and Redis instances

## Key Environment Variables

```bash
DIRECTUS_URL=https://cms.dk0.dev
DIRECTUS_STATIC_TOKEN=...
N8N_WEBHOOK_URL=https://n8n.dk0.dev
N8N_SECRET_TOKEN=...
N8N_API_KEY=...
DATABASE_URL=postgresql://...
REDIS_URL=redis://...  # optional
```

## Adding a CMS-managed Section

1. Define GraphQL query + types in `lib/directus.ts`
2. Create API route `app/api/<name>/route.ts` with `runtime='nodejs'`, `dynamic='force-dynamic'`, and `source` field in response
3. Create component `app/components/<Name>.tsx` with Skeleton loading state
4. Add i18n keys to both `messages/en.json` and `messages/de.json`
5. Create `<Name>Client` wrapper in `app/components/ClientWrappers.tsx` with scoped `NextIntlClientProvider`
6. Add to `app/_ui/HomePageServer.tsx` wrapped in `<ScrollFadeIn>`