Initial commit

.dockerignore

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+node_modules
+npm-debug.log
+.git
+.gitignore
+README.md

.gitignore

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+.env
+*.log
+dist/

Dockerfile

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+FROM node:20-alpine
+WORKDIR /app
+
+# Nur package.json zuerst – npm install cached bleiben wenn sich nur Code ändert
+COPY package.json package-lock.json ./
+RUN npm ci --omit=dev
+
+# Danach erst den Rest kopieren (node_modules wird NICHT kopiert dank .dockerignore)
+COPY server.js ./
+COPY public ./public
+
+EXPOSE 3000
+CMD ["node", "server.js"]

README.md

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+# LinkedIn Post Formatter
+
+![Node.js](https://img.shields.io/badge/Node.js-20+-339933?logo=node.js&logoColor=white)
+![Docker](https://img.shields.io/badge/Docker-ready-2496ED?logo=docker&logoColor=white)
+![License](https://img.shields.io/badge/License-MIT-green)
+![Self-hosted](https://img.shields.io/badge/Self--hosted-yes-blueviolet)
+
+**Self-hosted Alternative zu Taplio & AuthoredUp — kostenlos, kein Login, kein Abo.**
+
+LinkedIn unterstützt keine echte Textformatierung. Dieser Formatter löst das Problem mit Unicode-Mathematik-Zeichen, die in jedem Browser und auf jedem Gerät korrekt dargestellt werden — inklusive Zeilenumbruch-Fix für den LinkedIn-Editor.
+
+---
+
+## Features
+
+- **6 Schriftvarianten** als LinkedIn-Karten-Vorschau (Sans, Bold, Italic, Bold Italic, Monospace, Plain)
+- **Copy text** — ein Klick, fertig — Text direkt in LinkedIn einfügen
+- **Zeilenumbruch-Fix** — Leerzeilen überleben den Paste in LinkedIn (Zero-Width-Space-Trick)
+- **Zeichen-Counter** mit Farbindikator (LinkedIn-Limit: 3000 Zeichen)
+- **25+ Emoji-Schnellauswahl** für IT- und Business-Posts
+- **Keyboard Shortcuts** — `Strg+B`, `Strg+I`, `Strg+Enter`
+- **Keine externen Abhängigkeiten** im Frontend — reines HTML/CSS/JS
+- **HTTPS-ready** — Clipboard API funktioniert hinter jedem Reverse Proxy mit SSL
+
+---
+
+## Schnellstart
+
+### Node.js
+
+```bash
+git clone https://github.com/DEIN-USERNAME/linkedin-formatter.git
+cd linkedin-formatter
+npm install
+npm start
+# → http://localhost:3000
+```
+
+### Docker
+
+```bash
+docker compose up -d
+# → http://localhost:3000
+```
+
+### Eigener Port
+
+```bash
+PORT=8080 node server.js
+```
+
+---
+
+## Formatting-Syntax
+
+| Eingabe          | Ausgabe             |
+|-----------------|---------------------|
+| `**fett**`      | 𝗨𝗻𝗶𝗰𝗼𝗱𝗲 𝗕𝗼𝗹𝗱       |
+| `_kursiv_`      | 𝘜𝘯𝘪𝘤𝘰𝘥𝘦 𝘐𝘵𝘢𝘭𝘪𝘤     |
+| Leerzeile       | Absatz in LinkedIn  |
+| `Strg+B`        | Selektion fett      |
+| `Strg+I`        | Selektion kursiv    |
+| `Strg+Enter`    | Vorschau generieren |
+
+---
+
+## Hinter Reverse Proxy (Zoraxy / nginx / Traefik)
+
+Port 3000 proxyen, SSL terminieren — fertig. Die Clipboard API (`navigator.clipboard`) erfordert HTTPS oder `localhost`.
+
+**Zoraxy Beispiel:** Proxy Rule auf `localhost:3000`, TLS über Let's Encrypt aktivieren.
+
+---
+
+## Warum kein Markdown / HTML in LinkedIn?
+
+LinkedIn akzeptiert ausschließlich Unicode-Plaintext. Fettschrift funktioniert über mathematische Unicode-Blöcke (z.B. `U+1D5D4`–`U+1D5ED` für Sans-Serif Bold), die LinkedIn wie normale Zeichen behandelt — aber im Feed fett dargestellt werden. Zeilenumbrüche werden beim Einfügen über die Zwischenablage von LinkedIn normalisiert; der eingesetzte Zero-Width-Space (`U+200B`) verhindert das.
+
+---
+
+## Stack
+
+- **Backend:** Node.js + Express (1 Datei, ~20 Zeilen)
+- **Frontend:** Vanilla HTML/CSS/JS, keine Frameworks, keine npm-Abhängigkeiten im Browser
+- **Container:** Alpine-based Docker Image (~180 MB)
+
+---
+
+## License
+
+MIT — fork it, self-host it, ship it.

docker-compose.yml

@@ -0,0 +1,7 @@
+services:
+  linkedin-formatter:
+    build: .
+    container_name: linkedin-formatter
+    ports:
+      - "3000:3000"
+    restart: unless-stopped

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+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.4.0"
+      }
+    },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,12 @@
+{
+  "name": "linkedin-formatter",
+  "version": "1.1.0",
+  "description": "LinkedIn Post Formatter - self-hosted",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2"
+  }
+}

public/index.html

@@ -0,0 +1,288 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>LinkedIn Post Formatter</title>
+<style>
+*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
+:root{
+  --bg:#f3f2ef;--surface:#fff;--border:#e0ddd6;--border2:#c8c5be;
+  --text:#1a1a18;--muted:#666;--radius:8px;--radius-lg:12px;
+}
+body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column;}
+header{background:#fff;border-bottom:1px solid var(--border);padding:13px 24px;display:flex;align-items:center;gap:12px;}
+.li-logo{width:28px;height:28px;background:#0077b5;border-radius:5px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;flex-shrink:0;}
+header h1{font-size:16px;font-weight:600;}
+header span{font-size:13px;color:var(--muted);margin-left:auto;}
+.layout{display:flex;flex:1;overflow:hidden;max-height:calc(100vh - 54px);}
+.left{width:360px;flex-shrink:0;display:flex;flex-direction:column;border-right:1px solid var(--border);background:#fff;}
+.panel-hd{padding:11px 16px;border-bottom:1px solid var(--border);font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;}
+.toolbar{padding:8px 12px;border-bottom:1px solid var(--border);display:flex;flex-wrap:wrap;gap:4px;background:#fafaf8;}
+.toolbar button{font-size:13px;padding:4px 10px;border:1px solid var(--border2);background:#fff;color:var(--text);border-radius:var(--radius);cursor:pointer;font-family:inherit;}
+.toolbar button:hover{background:var(--border);}
+.sep{width:1px;background:var(--border2);margin:2px 2px;align-self:stretch;}
+textarea{flex:1;width:100%;padding:16px;font-size:15px;line-height:1.75;border:none;outline:none;resize:none;background:#fff;color:var(--text);font-family:inherit;}
+.left-foot{padding:9px 16px;border-top:1px solid var(--border);display:flex;align-items:center;gap:8px;}
+.counter{font-size:13px;color:var(--muted);}
+.counter strong{color:var(--text);}
+.counter.warn strong{color:#b45309;}
+.counter.danger strong{color:#c0392b;}
+.prog{flex:1;height:4px;background:var(--border);border-radius:2px;overflow:hidden;}
+.prog-fill{height:100%;background:#2d7a3a;border-radius:2px;transition:width .15s,background .15s;}
+button.gen{background:#0a66c2;color:#fff;border:none;border-radius:var(--radius);font-size:13px;font-weight:500;padding:6px 16px;cursor:pointer;font-family:inherit;white-space:nowrap;}
+button.gen:hover{background:#094fa3;}
+.right{flex:1;overflow-y:auto;padding:20px;}
+.hint{font-size:13px;color:var(--muted);margin-bottom:16px;}
+.hint kbd{background:#eee;padding:1px 5px;border-radius:4px;font-size:12px;border:1px solid var(--border2);}
+.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:14px;}
+.variant-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden;}
+.variant-label{padding:7px 13px;font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid var(--border);background:#fafaf8;}
+.li-post{padding:12px 13px 10px;}
+.li-post-header{display:flex;align-items:center;gap:9px;margin-bottom:9px;}
+.li-avatar{width:36px;height:36px;border-radius:50%;background:#0077b5;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px;flex-shrink:0;}
+.li-name{font-size:13px;font-weight:600;line-height:1.3;}
+.li-sub{font-size:11px;color:var(--muted);}
+.li-text{font-size:13px;line-height:1.6;white-space:pre-wrap;word-break:break-word;color:#1a1a18;max-height:200px;overflow:hidden;position:relative;}
+.li-text.expanded{max-height:none;}
+.li-fade{position:absolute;bottom:0;left:0;right:0;height:36px;background:linear-gradient(transparent,#fff);}
+.li-more{font-size:12px;color:#0a66c2;cursor:pointer;margin-top:3px;}
+.card-foot{display:flex;align-items:center;justify-content:space-between;padding:8px 13px;border-top:1px solid var(--border);}
+.li-actions{display:flex;gap:0;}
+.li-act{font-size:11px;color:var(--muted);padding:3px 7px;border-radius:4px;cursor:pointer;}
+.li-act:hover{background:var(--bg);}
+.copy-btn{font-size:12px;padding:5px 11px;border:1px solid var(--border2);background:#fff;color:var(--text);border-radius:var(--radius);cursor:pointer;font-family:inherit;display:flex;align-items:center;gap:4px;}
+.copy-btn:hover{background:var(--bg);}
+.copy-btn.copied{background:#d1fae5;color:#065f46;border-color:#6ee7b7;}
+.empty-state{text-align:center;padding:80px 20px;color:var(--muted);}
+.empty-state p{font-size:15px;margin-bottom:8px;color:var(--text);}
+.empty-state small{font-size:13px;}
+@media(max-width:768px){
+  .layout{flex-direction:column;max-height:none;overflow:visible;}
+  .left{width:100%;}
+  .right{padding:14px;}
+}
+</style>
+</head>
+<body>
+<header>
+  <div class="li-logo">in</div>
+  <h1>LinkedIn Post Formatter</h1>
+  <span>self-hosted · kostenlos · kein Login</span>
+</header>
+<div class="layout">
+  <div class="left">
+    <div class="panel-hd">Eingabe</div>
+    <div class="toolbar">
+      <button onclick="wrapSel('**','**')"><b>B</b> Fett</button>
+      <button onclick="wrapSel('_','_')"><i>I</i> Kursiv</button>
+      <div class="sep"></div>
+      <button onclick="ins('• ')">•</button>
+      <button onclick="ins('→ ')">→</button>
+      <div class="sep"></div>
+      <button onclick="ins('👉 ')">👉</button>
+      <button onclick="ins('✅ ')">✅</button>
+      <button onclick="ins('❌ ')">❌</button>
+      <button onclick="ins('⚠️ ')">⚠️</button>
+      <button onclick="ins('💡')">💡</button>
+      <button onclick="ins('🔥')">🔥</button>
+      <button onclick="ins('🚀')">🚀</button>
+      <button onclick="ins('⚡')">⚡</button>
+      <button onclick="ins('📌')">📌</button>
+      <button onclick="ins('🎯')">🎯</button>
+      <button onclick="ins('📊')">📊</button>
+      <button onclick="ins('🔧')">🔧</button>
+      <button onclick="ins('💰')">💰</button>
+      <button onclick="ins('📈')">📈</button>
+      <button onclick="ins('🤝')">🤝</button>
+      <button onclick="ins('👀')">👀</button>
+      <button onclick="ins('💬')">💬</button>
+      <button onclick="ins('✍️')">✍️</button>
+      <button onclick="ins('🏆')">🏆</button>
+      <button onclick="ins('❓')">❓</button>
+      <button onclick="ins('1️⃣ ')">1️⃣</button>
+      <button onclick="ins('2️⃣ ')">2️⃣</button>
+      <button onclick="ins('3️⃣ ')">3️⃣</button>
+      <button onclick="ins('🧠')">🧠</button>
+      <button onclick="ins('📣')">📣</button>
+      <button onclick="ins('🔑')">🔑</button>
+      <button onclick="ins('👆 ')">👆</button>
+      <button onclick="ins('☑️ ')">☑️</button>
+      <button onclick="ins('🌍')">🌍</button>
+      <button onclick="ins('⏰')">⏰</button>
+      <button onclick="ins('💎')">💎</button>
+      <div class="sep"></div>
+      <button onclick="clearAll()">✕</button>
+    </div>
+    <textarea id="ta" placeholder="Text eingeben...
+
+**Doppelstern** = Fett
+_Unterstrich_ = Kursiv
+
+Leerzeile = Absatz in LinkedIn"></textarea>
+    <div class="left-foot">
+      <div class="counter" id="ctr"><strong>0</strong>&nbsp;/ 3000</div>
+      <div class="prog"><div class="prog-fill" id="bar" style="width:0%"></div></div>
+      <button class="gen" onclick="generate()">Vorschau ↗</button>
+    </div>
+  </div>
+
+  <div class="right" id="right">
+    <div class="empty-state">
+      <p>Text eingeben → „Vorschau" klicken</p>
+      <small>6 Schriftvarianten als LinkedIn-Karten — direkt per „Copy text" in die Zwischenablage</small>
+    </div>
+  </div>
+</div>
+
+<script>
+const B={A:'𝗔',B:'𝗕',C:'𝗖',D:'𝗗',E:'𝗘',F:'𝗙',G:'𝗚',H:'𝗛',I:'𝗜',J:'𝗝',K:'𝗞',L:'𝗟',M:'𝗠',N:'𝗡',O:'𝗢',P:'𝗣',Q:'𝗤',R:'𝗥',S:'𝗦',T:'𝗧',U:'𝗨',V:'𝗩',W:'𝗪',X:'𝗫',Y:'𝗬',Z:'𝗭',a:'𝗮',b:'𝗯',c:'𝗰',d:'𝗱',e:'𝗲',f:'𝗳',g:'𝗴',h:'𝗵',i:'𝗶',j:'𝗷',k:'𝗸',l:'𝗹',m:'𝗺',n:'𝗻',o:'𝗼',p:'𝗽',q:'𝗾',r:'𝗿',s:'𝘀',t:'𝘁',u:'𝘂',v:'𝘃',w:'𝘄',x:'𝘅',y:'𝘆',z:'𝘇','0':'𝟬','1':'𝟭','2':'𝟮','3':'𝟯','4':'𝟰','5':'𝟱','6':'𝟲','7':'𝟳','8':'𝟴','9':'𝟵'};
+const I={A:'𝘈',B:'𝘉',C:'𝘊',D:'𝘋',E:'𝘌',F:'𝘍',G:'𝘎',H:'𝘏',I:'𝘐',J:'𝘑',K:'𝘒',L:'𝘓',M:'𝘔',N:'𝘕',O:'𝘖',P:'𝘗',Q:'𝘘',R:'𝘙',S:'𝘚',T:'𝘛',U:'𝘜',V:'𝘝',W:'𝘞',X:'𝘟',Y:'𝘠',Z:'𝘡',a:'𝘢',b:'𝘣',c:'𝘤',d:'𝘥',e:'𝘦',f:'𝘧',g:'𝘨',h:'𝘩',i:'𝘪',j:'𝘫',k:'𝘬',l:'𝘭',m:'𝘮',n:'𝘯',o:'𝘰',p:'𝘱',q:'𝘲',r:'𝘳',s:'𝘴',t:'𝘵',u:'𝘶',v:'𝘷',w:'𝘸',x:'𝘹',y:'𝘺',z:'𝘻'};
+const BI={A:'𝘼',B:'𝘽',C:'𝘾',D:'𝘿',E:'𝙀',F:'𝙁',G:'𝙂',H:'𝙃',I:'𝙄',J:'𝙅',K:'𝙆',L:'𝙇',M:'𝙈',N:'𝙉',O:'𝙊',P:'𝙋',Q:'𝙌',R:'𝙍',S:'𝙎',T:'𝙏',U:'𝙐',V:'𝙑',W:'𝙒',X:'𝙓',Y:'𝙔',Z:'𝙕',a:'𝙖',b:'𝙗',c:'𝙘',d:'𝙙',e:'𝙚',f:'𝙛',g:'𝙜',h:'𝙝',i:'𝙞',j:'𝙟',k:'𝙠',l:'𝙡',m:'𝙢',n:'𝙣',o:'𝙤',p:'𝙥',q:'𝙦',r:'𝙧',s:'𝙨',t:'𝙩',u:'𝙪',v:'𝙫',w:'𝙬',x:'𝙭',y:'𝙮',z:'𝙯'};
+const MN={A:'𝙰',B:'𝙱',C:'𝙲',D:'𝙳',E:'𝙴',F:'𝙵',G:'𝙶',H:'𝙷',I:'𝙸',J:'𝙹',K:'𝙺',L:'𝙻',M:'𝙼',N:'𝙽',O:'𝙾',P:'𝙿',Q:'𝚀',R:'𝚁',S:'𝚂',T:'𝚃',U:'𝚄',V:'𝚅',W:'𝚆',X:'𝚇',Y:'𝚈',Z:'𝚉',a:'𝚊',b:'𝚋',c:'𝚌',d:'𝚍',e:'𝚎',f:'𝚏',g:'𝚐',h:'𝚑',i:'𝚒',j:'𝚓',k:'𝚔',l:'𝚕',m:'𝚖',n:'𝚗',o:'𝚘',p:'𝚙',q:'𝚚',r:'𝚛',s:'𝚜',t:'𝚝',u:'𝚞',v:'𝚟',w:'𝚠',x:'𝚡',y:'𝚢',z:'𝚣'};
+
+function mp(s,m){return s.split('').map(c=>m[c]||c).join('');}
+
+function applyInline(t){
+  t=t.replace(/\*\*(.+?)\*\*/g,(_,m)=>mp(m,B));
+  t=t.replace(/_(.+?)_/g,(_,m)=>mp(m,I));
+  return t;
+}
+function mapAll(t,m){
+  // map every char but preserve newlines & emojis
+  return t.split('').map(c=>m[c]||c).join('');
+}
+function stripMarkers(t){
+  return t.replace(/\*\*(.+?)\*\*/g,'$1').replace(/_(.+?)_/g,'$1');
+}
+// LinkedIn paragraph fix: blank lines get a zero-width space so they survive paste
+function liParagraph(t){
+  return t.replace(/\n\n/g,'\n\u200b\n');
+}
+
+function buildVariants(raw){
+  const plain = stripMarkers(raw);
+  return [
+    {label:'Sans (Standard)',        text: liParagraph(applyInline(raw))},
+    {label:'Bold Sans',              text: liParagraph(mapAll(applyInline(raw),B))},
+    {label:'Italic Sans',            text: liParagraph(mapAll(applyInline(raw),I))},
+    {label:'Bold Italic Sans',       text: liParagraph(mapAll(applyInline(raw),BI))},
+    {label:'Monospace',              text: liParagraph(mapAll(plain,MN))},
+    {label:'Sans (ohne Formatierung)',text: liParagraph(plain)},
+  ];
+}
+
+let _variants=[];
+
+function generate(){
+  const raw=document.getElementById('ta').value;
+  if(!raw.trim())return;
+  _variants=buildVariants(raw);
+  const right=document.getElementById('right');
+  right.innerHTML='<p class="hint">Variante wählen → <b>Copy text</b> → direkt in LinkedIn einfügen. Zeilenumbrüche bleiben erhalten.</p><div class="cards-grid" id="grid"></div>';
+  const grid=document.getElementById('grid');
+
+  _variants.forEach((v,i)=>{
+    const d=document.createElement('div');
+    d.className='variant-card';
+    d.innerHTML=`
+      <div class="variant-label">${v.label}</div>
+      <div class="li-post">
+        <div class="li-post-header">
+          <div class="li-avatar">JH</div>
+          <div><div class="li-name">Joachim Hummel</div><div class="li-sub">Senior IT Consultant · Automatisierung</div></div>
+        </div>
+        <div class="li-text" id="t${i}">${esc(v.text)}</div>
+        <div class="li-more" id="m${i}" onclick="exp(${i})" style="display:none">… mehr anzeigen</div>
+      </div>
+      <div class="card-foot">
+        <div class="li-actions">
+          <div class="li-act">👍 Like</div>
+          <div class="li-act">💬 Kommentar</div>
+        </div>
+        <button class="copy-btn" id="cb${i}" onclick="cp(${i})">
+          <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><rect x="9" y="9" width="13" height="13" rx="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg>
+          Copy text
+        </button>
+      </div>`;
+    grid.appendChild(d);
+    setTimeout(()=>{
+      const el=document.getElementById('t'+i);
+      if(el&&el.scrollHeight>el.clientHeight+4){
+        const f=document.createElement('div');f.className='li-fade';el.appendChild(f);
+        document.getElementById('m'+i).style.display='block';
+      }
+    },60);
+  });
+}
+
+function exp(i){
+  const el=document.getElementById('t'+i);
+  el.classList.add('expanded');
+  const f=el.querySelector('.li-fade');if(f)f.remove();
+  document.getElementById('m'+i).style.display='none';
+}
+function cp(i){
+  const btn=document.getElementById('cb'+i);
+  const text=_variants[i].text;
+  if(navigator.clipboard&&window.isSecureContext){
+    navigator.clipboard.writeText(text).then(()=>flash(btn)).catch(()=>legacyCopy(text,btn));
+  } else {
+    legacyCopy(text,btn);
+  }
+}
+function legacyCopy(text,btn){
+  const ta=document.createElement('textarea');
+  ta.value=text;
+  ta.style.cssText='position:fixed;top:0;left:0;width:2px;height:2px;opacity:0.01;border:none;outline:none;';
+  document.body.appendChild(ta);
+  ta.focus();ta.select();ta.setSelectionRange(0,text.length);
+  try{ document.execCommand('copy'); flash(btn); }
+  catch(e){ alert('Kopieren fehlgeschlagen – bitte manuell kopieren (Strg+A, Strg+C) aus dem Vorschau-Feld.'); }
+  document.body.removeChild(ta);
+}
+function flash(btn){
+  btn.textContent='✓ Kopiert!';btn.classList.add('copied');
+  setTimeout(()=>{
+    btn.innerHTML='<svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><rect x="9" y="9" width="13" height="13" rx="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg> Copy text';
+    btn.classList.remove('copied');
+  },2000);
+}
+function esc(s){return s.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');}
+
+document.getElementById('ta').addEventListener('input',()=>{
+  const len=document.getElementById('ta').value.length;
+  const el=document.getElementById('ctr');
+  const bar=document.getElementById('bar');
+  el.querySelector('strong').textContent=len.toLocaleString('de-DE');
+  const pct=Math.min(len/3000*100,100);
+  bar.style.width=pct+'%';
+  bar.style.background=pct>=100?'#c0392b':pct>=80?'#b45309':'#2d7a3a';
+  el.className='counter'+(pct>=100?' danger':pct>=80?' warn':'');
+});
+document.getElementById('ta').addEventListener('keydown',e=>{
+  if((e.ctrlKey||e.metaKey)&&e.key==='b'){e.preventDefault();wrapSel('**','**');}
+  if((e.ctrlKey||e.metaKey)&&e.key==='i'){e.preventDefault();wrapSel('_','_');}
+  if((e.ctrlKey||e.metaKey)&&e.key==='Enter'){e.preventDefault();generate();}
+});
+function wrapSel(b,a){
+  const ta=document.getElementById('ta');
+  const s=ta.selectionStart,e=ta.selectionEnd,v=ta.value;
+  ta.value=v.slice(0,s)+b+v.slice(s,e)+a+v.slice(e);
+  ta.selectionStart=s+b.length;ta.selectionEnd=e+b.length;ta.focus();
+}
+function ins(ch){
+  const ta=document.getElementById('ta');
+  const s=ta.selectionStart,v=ta.value;
+  ta.value=v.slice(0,s)+ch+v.slice(s);
+  ta.selectionStart=ta.selectionEnd=s+ch.length;ta.focus();
+}
+function clearAll(){
+  document.getElementById('ta').value='';
+  document.getElementById('ctr').querySelector('strong').textContent='0';
+  document.getElementById('bar').style.width='0%';
+  document.getElementById('right').innerHTML='<div class="empty-state"><p>Text eingeben → „Vorschau" klicken</p><small>6 Schriftvarianten als LinkedIn-Karten — direkt per „Copy text" kopieren</small></div>';
+}
+</script>
+</body>
+</html>

server.js

@@ -0,0 +1,16 @@
+'use strict';
+
+const express = require('express');
+const path    = require('path');
+const app     = express();
+const PORT    = process.env.PORT || 3000;
+
+app.use(express.static(path.join(__dirname, 'public')));
+
+app.get('/', (req, res) => {
+  res.sendFile(path.join(__dirname, 'public', 'index.html'));
+});
+
+app.listen(PORT, () => {
+  console.log(`LinkedIn Formatter läuft auf http://localhost:${PORT}`);
+});