SEO: og:image/twitter:image, site_name, locale, hreflang und JSON-LD (WebApplication); Route fuer screenshot.png

- Neue Routen: /login, /stats, /logout
- Session-basierte Authentifizierung
- Umfassende Statistiken: Seitenaufrufe, Suchvorgänge, Quellen
- Environment-Variablen: ADMIN_PASSWORD, FLASK_SECRET_KEY
- Docker-Integration mit docker-compose.yml
- Responsive UI mit Charts und Aktivitätsprotokoll

.gitignore

@@ -1,6 +1,8 @@
 .venv/
 __pycache__/
 *.py[cod]
+# Logs
+logs/
 *.log
 .env
 .DS_Store

LOGGING.md

@@ -0,0 +1,86 @@
+# Logging-System
+
+Das Wordle-Helper Logging-System protokolliert Seitenaufrufe und Suchanfragen ohne personenbezogene Daten wie IP-Adressen.
+
+## Log-Datei
+
+- **Verzeichnis:** `logs/`
+- **Datei:** `logs/app.log`
+- **Format:** UTF-8
+- **Rotation:** Automatische Rotation nach 7 Tagen
+- **Backup:** Komprimierte Backup-Dateien (30 Tage aufbewahrt)
+- **Verzeichnis:** Wird automatisch erstellt, falls es nicht existiert
+
+## Protokollierte Ereignisse
+
+### 1. Seitenaufrufe (PAGE_VIEW)
+
+```
+2024-01-01 12:00:00 - INFO - PAGE_VIEW: index | User-Agent: Mozilla/5.0...
+2024-01-01 12:00:01 - INFO - PAGE_VIEW: manifest | User-Agent: Mozilla/5.0...
+2024-01-01 12:00:02 - INFO - PAGE_VIEW: service_worker | User-Agent: Mozilla/5.0...
+```
+
+### 2. Suchanfragen (SEARCH)
+
+```
+2024-01-01 12:00:05 - INFO - SEARCH: pos='hallo' includes='' excludes='' sources=['OT'] | User-Agent: Mozilla/5.0...
+2024-01-01 12:00:10 - INFO - SEARCH: pos='' includes='aei' excludes='rst' sources=['OT', 'WF'] | User-Agent: Mozilla/5.0...
+```
+
+## Log-Format
+
+- **Zeitstempel:** ISO-Format (YYYY-MM-DD HH:MM:SS)
+- **Ereignistyp:** PAGE_VIEW oder SEARCH
+- **Details:** Spezifische Informationen je nach Ereignistyp
+- **User-Agent:** Gekürzt auf 100 Zeichen (ohne IP-Adressen)
+
+## Datenschutz
+
+- **Keine IP-Adressen** werden protokolliert
+- **Keine persönlichen Daten** werden gespeichert
+- **User-Agent** wird gekürzt und anonymisiert
+- **Logs** werden nicht ins Git-Repository übertragen (`.gitignore`)
+
+## Konfiguration
+
+Das Logging ist in `app.py` konfiguriert:
+
+```python
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s - %(levelname)s - %(message)s',
+    handlers=[
+        logging.FileHandler(logs_dir / 'app.log', encoding='utf-8'),
+        logging.StreamHandler()
+    ]
+)
+```
+
+## Automatische Log-Bereinigung
+
+Das System bereinigt automatisch alte Log-Dateien:
+
+- **Rotation:** Nach 7 Tagen wird die aktuelle Log-Datei komprimiert
+- **Backup:** Komprimierte Dateien werden 30 Tage aufbewahrt
+- **Format:** Backup-Dateien: `app_YYYYMMDD_HHMMSS.log.gz`
+- **Trigger:** Bereinigung wird bei jedem Seitenaufruf geprüft
+- **Fehlerbehandlung:** Fehler bei der Bereinigung werden geloggt
+
+## Log-Analyse
+
+Die Log-Datei kann mit Standard-Tools analysiert werden:
+
+```bash
+# Alle Suchanfragen anzeigen
+grep "SEARCH:" logs/app.log
+
+# Seitenaufrufe zählen
+grep "PAGE_VIEW:" logs/app.log | wc -l
+
+# Häufigste Suchparameter
+grep "SEARCH:" logs/app.log | cut -d'|' -f1
+
+# Logs-Verzeichnis anzeigen
+ls -la logs/
+```

README.md

@@ -5,31 +5,57 @@ Hilfs‑Web‑App für deutsche Wordle‑Rätsel. Nutzer geben bekannte Buchstab
 ## Features
 
 - Filter nach Positionen (1–5), enthaltenen und ausgeschlossenen Buchstaben
+- Enthaltene/Ausgeschlossene Buchstaben per Ein‑Zeichen‑Eingabe und „+“-Button hinzufügen
+- Ausgewählte Buchstaben werden als Badges angezeigt, Klick entfernt den Buchstaben wieder
+- Alphabetische Sortierung der ausgewählten Buchstaben (deutsche Locale)
+- Drag‑and‑Drop: Buchstaben aus „Enthalten“ direkt auf die Felder `pos1`–`pos5` ziehen
 - Deutsche Wortliste (nur 5 Buchstaben), aus OpenThesaurus und wordfreq gemerged
 - Quellen‑Badges je Treffer (OT/WF)
 - Zugängliche UI (A11y: Fieldset/Legend, ARIA‑Hinweise, Skip‑Link, semantische Liste)
 - SEO‑Metas (Description, Canonical, Open Graph, Twitter)
 - Docker‑Image mit Gunicorn
 
+## Demo
+
+![Screenshot](./screenshot.png)
+
+Wordle-Cheater live bei [https://wh.elpatron.me](https://wh.elpatron.me).
+
+
 ## Projektstruktur
 
-```
+```text
-app.py                         # Flask‑App
+wordle-helper/
-scripts/generate_wordlist.py   # Generator für Wortliste + Quellen‑JSON
+├── app.py                        # Flask‑App
-templates/index.html           # UI (Jinja2‑Template)
+├── scripts/
-static/favicon.svg             # Favicon (SVG)
+│   └── generate_wordlist.py      # Generator für Wortliste + Quellen‑JSON
-data/openthesaurus.txt         # Quelle OpenThesaurus (Text)
+├── templates/
-data/words_de_5.txt           # generierte Wortliste
+│   └── index.html                # UI (Jinja2‑Template)
-data/words_de_5_sources.json   # Wort→Quellen (ot/wf)
+├── static/
-Dockerfile                     # Produktionsimage (Gunicorn)
+│   └── favicon.svg               # Favicon (SVG)
-requirements.txt               # Python‑Abhängigkeiten
+├── data/
-LICENSE                        # MIT‑Lizenz
+│   ├── openthesaurus.txt         # Quelle OpenThesaurus (Text)
-```
+│   ├── words_de_5.txt            # generierte Wortliste
+│   └── words_de_5_sources.json   # Wort→Quellen (ot/wf)
+├── Dockerfile                    # Produktionsimage (Gunicorn)
+├── requirements.txt              # Python‑Abhängigkeiten
 
----
+```
 
 ## Für Sysadmins (Betrieb)
 
+### Environment-Variablen
+
+Für das Admin-Dashboard müssen folgende Variablen gesetzt werden:
+
+```bash
+# Flask Secret Key (für Sessions)
+export FLASK_SECRET_KEY="your-super-secret-key-change-this-in-production"
+
+# Admin-Passwort für das Statistik-Dashboard
+export ADMIN_PASSWORD="your-secure-admin-password"
+```
+
 ### Docker (empfohlen)
 
 - Build:
@@ -45,8 +71,10 @@ docker run --rm -p 8000:8000 wordle-cheater
 ```
 
 - Health‑Check (lokal): `http://localhost:8000/`
+- Admin‑Dashboard: `http://localhost:8000/stats` (passwortgeschützt)
 
 Hinweise:
+
 - Das Image generiert die Wortliste beim Build. Wird `data/openthesaurus.txt` aktualisiert, Image neu bauen.
 - Gunicorn startet mit 3 Worker (`gthread`, 2 Threads). Passen Sie Worker/Threads an Ihre CPU an.
 - Hinter einem Reverse Proxy (z. B. Nginx) betreiben; Beispiel:
@@ -61,6 +89,7 @@ location / {
 ```
 
 ### Ohne Docker (Service)
+
 - Python 3.12 bereitstellen
 - Virtuelle Umgebung erstellen, Abhängigkeiten installieren (siehe Entwickler‑Setup)
 - Start per Gunicorn:

app.py

@@ -1,9 +1,166 @@
 from pathlib import Path
 import json
+import logging
+import os
+from datetime import datetime, timedelta
 from typing import Tuple, Dict, List
-from flask import Flask, render_template, request
+from flask import Flask, render_template, request, send_from_directory, session, redirect, url_for, flash
+from functools import wraps
 
 app = Flask(__name__)
+app.secret_key = os.environ.get('FLASK_SECRET_KEY', 'dev-secret-key-change-in-production')
+
+# Admin-Passwort aus Environment-Variable
+ADMIN_PASSWORD = os.environ.get('ADMIN_PASSWORD', 'admin123')
+
+# Logging konfigurieren
+
+# Logs-Verzeichnis erstellen, falls es nicht existiert
+logs_dir = Path(__file__).parent / "logs"
+logs_dir.mkdir(exist_ok=True)
+
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s - %(levelname)s - %(message)s',
+    handlers=[
+        logging.FileHandler(logs_dir / 'app.log', encoding='utf-8'),
+        logging.StreamHandler()
+    ]
+)
+logger = logging.getLogger(__name__)
+
+def log_page_view(page: str, user_agent: str = None):
+    """Protokolliert Seitenaufrufe ohne IP-Adressen"""
+    timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+    user_agent_clean = user_agent[:100] if user_agent else 'Unknown'
+    logger.info(f"PAGE_VIEW: {page} | User-Agent: {user_agent_clean}")
+
+def log_search_query(search_params: dict, user_agent: str = None):
+    """Protokolliert Suchanfragen ohne IP-Adressen"""
+    timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+    user_agent_clean = user_agent[:100] if user_agent else 'Unknown'
+    
+    # Suchparameter für Logging vorbereiten
+    pos_str = ''.join(search_params.get('pos', [''] * 5))
+    includes = search_params.get('includes', '')
+    excludes = search_params.get('excludes', '')
+    sources = []
+    if search_params.get('use_ot'):
+        sources.append('OT')
+    if search_params.get('use_wf'):
+        sources.append('WF')
+    
+    logger.info(f"SEARCH: pos='{pos_str}' includes='{includes}' excludes='{excludes}' sources={sources} | User-Agent: {user_agent_clean}")
+
+def login_required(f):
+    """Decorator für passwortgeschützte Routen"""
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        if not session.get('logged_in'):
+            return redirect(url_for('login'))
+        return f(*args, **kwargs)
+    return decorated_function
+
+def get_statistics():
+    """Liest und analysiert die Log-Dateien für Statistiken"""
+    stats = {
+        'total_page_views': 0,
+        'total_searches': 0,
+        'page_views_by_page': {},
+        'searches_by_source': {'OT': 0, 'WF': 0, 'Both': 0},
+        'recent_activity': [],
+        'top_search_patterns': {}
+    }
+    
+    try:
+        # Aktuelle Log-Datei lesen
+        log_file = logs_dir / 'app.log'
+        if log_file.exists():
+            with open(log_file, 'r', encoding='utf-8') as f:
+                for line in f:
+                    if 'PAGE_VIEW:' in line:
+                        stats['total_page_views'] += 1
+                        # Seite extrahieren
+                        if 'PAGE_VIEW: ' in line:
+                            page = line.split('PAGE_VIEW: ')[1].split(' |')[0]
+                            stats['page_views_by_page'][page] = stats['page_views_by_page'].get(page, 0) + 1
+                    
+                    elif 'SEARCH:' in line:
+                        stats['total_searches'] += 1
+                        # Quellen extrahieren
+                        if 'sources=[' in line:
+                            sources_part = line.split('sources=')[1].split(']')[0]
+                            if 'OT' in sources_part and 'WF' in sources_part:
+                                stats['searches_by_source']['Both'] += 1
+                            elif 'OT' in sources_part:
+                                stats['searches_by_source']['OT'] += 1
+                            elif 'WF' in sources_part:
+                                stats['searches_by_source']['WF'] += 1
+                        
+                        # Suchmuster extrahieren
+                        if 'pos=' in line:
+                            pos_part = line.split('pos=\'')[1].split('\'')[0]
+                            if pos_part:
+                                stats['top_search_patterns'][pos_part] = stats['top_search_patterns'].get(pos_part, 0) + 1
+                    
+                    # Letzte 10 Aktivitäten
+                    if len(stats['recent_activity']) < 10:
+                        timestamp = line.split(' - ')[0] if ' - ' in line else ''
+                        if timestamp:
+                            stats['recent_activity'].append({
+                                'timestamp': timestamp,
+                                'line': line.strip()
+                            })
+        
+        # Backup-Dateien auch durchsuchen
+        for backup_file in logs_dir.glob("app_*.log.gz"):
+            try:
+                import gzip
+                with gzip.open(backup_file, 'rt', encoding='utf-8') as f:
+                    for line in f:
+                        if 'PAGE_VIEW:' in line:
+                            stats['total_page_views'] += 1
+                        elif 'SEARCH:' in line:
+                            stats['total_searches'] += 1
+            except Exception as e:
+                logger.error(f"Fehler beim Lesen der Backup-Datei {backup_file}: {e}")
+                
+    except Exception as e:
+        logger.error(f"Fehler beim Lesen der Statistiken: {e}")
+    
+    return stats
+
+def cleanup_old_logs():
+    """Bereinigt Log-Dateien älter als 7 Tage"""
+    try:
+        log_file = logs_dir / 'app.log'
+        if log_file.exists():
+            # Prüfe Datei-Alter
+            file_age = datetime.now() - datetime.fromtimestamp(log_file.stat().st_mtime)
+            if file_age > timedelta(days=7):
+                # Log-Datei komprimieren und umbenennen
+                backup_name = f"app_{datetime.now().strftime('%Y%m%d_%H%M%S')}.log.gz"
+                backup_path = logs_dir / backup_name
+                
+                # Komprimiere mit gzip (falls verfügbar)
+                import gzip
+                with open(log_file, 'rb') as f_in:
+                    with gzip.open(backup_path, 'wb') as f_out:
+                        f_out.writelines(f_in)
+                
+                # Lösche alte Log-Datei
+                log_file.unlink()
+                logger.info(f"Log-Datei komprimiert und gesichert: {backup_name}")
+                
+                # Lösche alte Backup-Dateien (älter als 30 Tage)
+                for backup_file in logs_dir.glob("app_*.log.gz"):
+                    backup_age = datetime.now() - datetime.fromtimestamp(backup_file.stat().st_mtime)
+                    if backup_age > timedelta(days=30):
+                        backup_file.unlink()
+                        logger.info(f"Alte Backup-Datei gelöscht: {backup_file.name}")
+                        
+    except Exception as e:
+        logger.error(f"Fehler bei der Log-Bereinigung: {e}")
 
 
 def load_words() -> Tuple[List[str], Dict[str, List[str]]]:
@@ -50,11 +207,19 @@ def filter_words(words: List[str], position_letters: List[str], includes_text: s
 
 @app.route("/", methods=["GET", "POST"])
 def index():
+	# Log-Bereinigung bei jedem Seitenaufruf prüfen (nur alle 24h)
+	cleanup_old_logs()
+	
+	# Seitenaufruf protokollieren
+	log_page_view("index", request.headers.get('User-Agent'))
+	
 	all_words, sources_map = load_words()
-    results: List[str] | None = None
+	results_display: List[str] | None = None
 	pos: List[str] = ["", "", "", "", ""]
 	includes: str = ""
 	excludes: str = ""
+	use_ot: bool = True
+	use_wf: bool = False
 	if request.method == "POST":
 		pos = [
 			(request.form.get("pos1") or "").strip().lower(),
@@ -65,17 +230,103 @@ def index():
 		]
 		includes = (request.form.get("includes") or "").strip()
 		excludes = (request.form.get("excludes") or "").strip()
-        results = filter_words(all_words, pos, includes, excludes)
+		use_ot = request.form.get("use_ot") is not None
+		use_wf = request.form.get("use_wf") is not None
+		# Falls keine Quelle gewählt ist, standardmäßig OpenThesaurus aktivieren
+		if not use_ot and not use_wf:
+			use_ot = True
+
+		# Suchanfrage protokollieren
+		search_params = {
+			'pos': pos,
+			'includes': includes,
+			'excludes': excludes,
+			'use_ot': use_ot,
+			'use_wf': use_wf
+		}
+		log_search_query(search_params, request.headers.get('User-Agent'))
+
+		# 1) Buchstaben-/Positionssuche über alle Wörter
+		matched = filter_words(all_words, pos, includes, excludes)
+		# 2) Quellen-Filter nur auf Ergebnisansicht anwenden
+		allowed = set()
+		if use_ot:
+			allowed.add("ot")
+		if use_wf:
+			allowed.add("wf")
+		if allowed:
+			results_display = [w for w in matched if any(src in allowed for src in sources_map.get(w, []))]
+		else:
+			# Keine Quelle gewählt → leere Anzeige (Suche wurde dennoch ausgeführt)
+			results_display = []
 	return render_template(
 		"index.html",
-        results=results,
+		results=results_display,
 		pos=pos,
 		includes=includes,
 		excludes=excludes,
 		words_count=len(all_words),
 		sources_map=sources_map,
+		use_ot=use_ot,
+		use_wf=use_wf,
+		error_message=None,
 	)
 
 
+@app.route('/manifest.webmanifest')
+def manifest_file():
+	log_page_view("manifest", request.headers.get('User-Agent'))
+	return send_from_directory(Path(__file__).parent / 'static', 'manifest.webmanifest', mimetype='application/manifest+json')
+
+
+@app.route('/sw.js')
+def service_worker():
+	# Service Worker muss auf Top-Level liegen
+	log_page_view("service_worker", request.headers.get('User-Agent'))
+	return send_from_directory(Path(__file__).parent / 'static', 'sw.js', mimetype='application/javascript')
+@app.route('/screenshot.png')
+def screenshot_image():
+    """Liefert das OpenGraph/Twitter Vorschaubild aus dem Projektstamm."""
+    log_page_view("screenshot", request.headers.get('User-Agent'))
+    return send_from_directory(Path(__file__).parent, 'screenshot.png', mimetype='image/png')
+
+
+
+@app.route('/login', methods=['GET', 'POST'])
+def login():
+    """Login-Seite für das Admin-Dashboard"""
+    if request.method == 'POST':
+        password = request.form.get('password')
+        logger.info(f"Login-Versuch: Passwort-Länge: {len(password) if password else 0}, ADMIN_PASSWORD gesetzt: {bool(ADMIN_PASSWORD)}")
+        if password == ADMIN_PASSWORD:
+            session['logged_in'] = True
+            flash('Erfolgreich angemeldet!', 'success')
+            logger.info("Login erfolgreich")
+            return redirect(url_for('stats'))
+        else:
+            flash('Falsches Passwort!', 'error')
+            logger.warning(f"Login fehlgeschlagen - eingegebenes Passwort: '{password}', erwartetes: '{ADMIN_PASSWORD}'")
+    
+    return render_template('login.html')
+
+
+@app.route('/logout')
+def logout():
+    """Logout-Funktion"""
+    session.pop('logged_in', None)
+    flash('Erfolgreich abgemeldet!', 'success')
+    return redirect(url_for('index'))
+
+
+@app.route('/stats')
+@login_required
+def stats():
+    """Statistik-Dashboard (passwortgeschützt)"""
+    log_page_view("stats", request.headers.get('User-Agent'))
+    statistics = get_statistics()
+    return render_template('stats.html', stats=statistics)
+
+
 if __name__ == "__main__":
+	logger.info(f"App gestartet - ADMIN_PASSWORD gesetzt: {bool(ADMIN_PASSWORD)}, Länge: {len(ADMIN_PASSWORD) if ADMIN_PASSWORD else 0}")
 	app.run(debug=True)

docker-compose.yml

@@ -0,0 +1,31 @@
+services:
+    wordle-helper:
+      build: .
+      ports:
+        - "8000:8000"
+      volumes:
+        # Logs-Verzeichnis als Volume mounten
+        - ./logs:/app/logs
+        # Optional: Statische Dateien für Entwicklung
+        - ./static:/app/static:ro
+      environment:
+        - PYTHONUNBUFFERED=1
+        - FLASK_ENV=production
+        - FLASK_SECRET_KEY=${FLASK_SECRET_KEY:-your-secret-key-change-this}
+        - ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin123}
+      restart: unless-stopped
+      # Container läuft als nicht-root User für bessere Sicherheit
+      user: "1000:1000"
+      # Healthcheck für Container-Status
+      healthcheck:
+        test: ["CMD", "curl", "-f", "http://localhost:8000/"]
+        interval: 30s
+        timeout: 10s
+        retries: 3
+        start_period: 40s
+
+volumes:
+  # Explizite Volume-Definition für Logs
+  logs:
+    driver: local
+      

robots.txt

@@ -0,0 +1,8 @@
+User-agent: *
+Allow: /
+
+# Sitemap
+Sitemap: https://wh.elpatron.me/sitemap.xml
+
+# Crawl-delay für freundliches Crawling
+Crawl-delay: 1

sitemap.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+    <url>
+        <loc>https://wh.elpatron.me/</loc>
+        <lastmod>2024-01-01</lastmod>
+        <changefreq>weekly</changefreq>
+        <priority>1.0</priority>
+    </url>
+</urlset>

static/manifest.webmanifest

@@ -0,0 +1,18 @@
+{
+  "name": "Wordle‑Cheater",
+  "short_name": "W‑Cheater",
+  "description": "Hilft bei der Lösung deutschsprachiger Wordle‑Rätsel mit Positions- und Buchstabenfiltern.",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "background_color": "#0b1220",
+  "theme_color": "#0b1220",
+  "icons": [
+    {
+      "src": "/static/favicon.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "any maskable"
+    }
+  ]
+}

static/sw.js

@@ -0,0 +1,39 @@
+const CACHE_NAME = 'wordle-cheater-v1';
+const APP_SHELL = [
+  '/',
+  '/static/favicon.svg',
+];
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(APP_SHELL))
+  );
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) => Promise.all(
+      keys.map((k) => (k === CACHE_NAME ? null : caches.delete(k)))
+    ))
+  );
+});
+
+self.addEventListener('fetch', (event) => {
+  const { request } = event;
+  // Netzwerk zuerst für HTML, sonst Cache-First
+  if (request.mode === 'navigate') {
+    event.respondWith(
+      fetch(request).catch(() => caches.match('/'))
+    );
+    return;
+  }
+  event.respondWith(
+    caches.match(request).then((cached) =>
+      cached || fetch(request).then((resp) => {
+        const copy = resp.clone();
+        caches.open(CACHE_NAME).then((cache) => cache.put(request, copy));
+        return resp;
+      })
+    )
+  );
+});

templates/index.html

@@ -11,43 +11,100 @@
     <meta property="og:title" content="Wordle‑Cheater (DE)" />
     <meta property="og:description" content="Finde deutsche 5‑Buchstaben‑Wörter mit Positions- und Buchstabenfiltern. Quellen: OpenThesaurus & wordfreq." />
     <meta property="og:url" content="{{ request.url_root }}" />
+    <meta property="og:site_name" content="Wordle‑Cheater (DE)" />
+    <meta property="og:locale" content="de_DE" />
+    <meta property="og:image" content="{{ url_for('screenshot_image', _external=True) }}" />
     <meta name="twitter:card" content="summary" />
     <meta name="twitter:title" content="Wordle‑Cheater (DE)" />
     <meta name="twitter:description" content="Finde deutsche 5‑Buchstaben‑Wörter mit Positions- und Buchstabenfiltern. Quellen: OpenThesaurus & wordfreq." />
+    <meta name="twitter:image" content="{{ url_for('screenshot_image', _external=True) }}" />
+    <link rel="alternate" hreflang="de" href="{{ request.url_root }}" />
     <link rel="icon" type="image/svg+xml" href="{{ url_for('static', filename='favicon.svg') }}" />
+    <link rel="manifest" href="/manifest.webmanifest" />
+    <meta name="theme-color" content="#0b1220" />
+    <meta name="color-scheme" content="light dark" />
+    <script>
+        (function() {
+            try {
+                var saved = localStorage.getItem('theme');
+                var prefersDark = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
+                var theme = saved || (prefersDark ? 'dark' : 'light');
+                document.documentElement.setAttribute('data-theme', theme);
+            } catch (e) {}
+        })();
+    </script>
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "WebApplication",
+      "name": "Wordle‑Cheater (DE)",
+      "url": "{{ request.url_root }}",
+      "applicationCategory": "UtilitiesApplication",
+      "operatingSystem": "Web",
+      "description": "Finde deutsche 5‑Buchstaben‑Wörter anhand bekannter Buchstaben und Positionen. Quellen: OpenThesaurus & wordfreq.",
+      "inLanguage": "de",
+      "offers": { "@type": "Offer", "price": "0", "priceCurrency": "EUR" }
+    }
+    </script>
     <style>
+        :root { --bg:#ffffff; --text:#111827; --muted:#6b7280; --badge-bg:#e5e7eb; --badge-text:#111827; --border:#e5e7eb; --skip-bg:#111827; --skip-text:#ffffff; --button-bg:#111827; --button-text:#ffffff; --input-bg:#ffffff; --input-text:#111827; --error:#b91c1c; }
+        [data-theme="dark"] { --bg:#0b1220; --text:#e5e7eb; --muted:#9ca3af; --badge-bg:#374151; --badge-text:#f9fafb; --border:#334155; --skip-bg:#e5e7eb; --skip-text:#111827; --button-bg:#e5e7eb; --button-text:#111827; --input-bg:#111827; --input-text:#e5e7eb; --error:#ef4444; }
+        html, body { background: var(--bg); color: var(--text); }
         body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin: 2rem; }
         .container { max-width: 800px; margin: 0 auto; }
+        .page-header { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
+        .page-header h1 { margin: 0; }
+        @media (max-width: 480px) { .page-header h1 { font-size: 1.5rem; } }
         .grid { display: grid; grid-template-columns: repeat(5, 3rem); gap: .5rem; }
-        .grid input { text-align: center; font-size: 1.25rem; padding: .4rem; }
+        .grid input { text-align: center; font-size: 1.25rem; padding: .4rem; background: var(--input-bg); color: var(--input-text); border: 1px solid var(--border); border-radius: .375rem; font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace; text-transform: uppercase; }
+        .grid input.filled { background: #6baa64; color: #ffffff; }
+        .text-input { font-size: 1.1rem; padding: .5rem; background: var(--input-bg); color: var(--input-text); border: 1px solid var(--border); border-radius: .375rem; width: 100%; box-sizing: border-box; font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace; text-transform: uppercase; }
+        .letter-input { width: calc(1ch + 2rem); padding: .5rem 1rem; font-size: 1rem; line-height: 1; background: var(--input-bg); color: var(--input-text); border: 1px solid var(--border); border-radius: .5rem; text-align: center; text-transform: uppercase; font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace; }
+        .plus-button { width: calc(1ch + 2rem); text-align: center; line-height: 1; display: inline-flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace; }
         label { font-weight: 600; display: block; margin-top: 1rem; margin-bottom: .25rem; }
         .results { margin-top: 1.5rem; }
-        .badge { display: inline-block; padding: .25rem .5rem; background: #e5e7eb; color: #111827; border-radius: .375rem; margin-right: .25rem; margin-bottom: .25rem; }
+        .results-box { border: 1px solid var(--border); border-radius: .5rem; padding: .75rem; }
+        .badge { display: inline-block; padding: .25rem .5rem; background: var(--badge-bg); color: var(--badge-text); border-radius: .375rem; margin-right: .25rem; margin-bottom: .25rem; }
+        .badge .letter { display: inline-block; }
+        .badge .letter.included { background: #ffc100; color: #ffffff; border-radius: .25rem; padding: 0 .1rem; }
+        #includes-list .badge, #excludes-list .badge { cursor: pointer; }
+        #includes-list .badge { background: #ffc100; color: #ffffff; }
         .source { font-size: .75rem; padding: .1rem .35rem; border-radius: .25rem; margin-left: .25rem; }
         .source.ot { background: #dbeafe; color: #1e40af; }
         .source.wf { background: #dcfce7; color: #065f46; }
-        button { margin-top: 1rem; padding: .5rem 1rem; font-size: 1rem; }
+        button { margin-top: 1rem; padding: .5rem 1rem; font-size: 1rem; margin-right: 0.5rem; background: var(--button-bg); color: var(--button-text); border: 1px solid var(--border); border-radius: .5rem; cursor: pointer; }
+        .reset-button { background: var(--muted); }
         summary { cursor: pointer; }
-        .footer { margin-top: 2rem; font-size: .9rem; color: #6b7280; }
+        .footer { margin-top: 2rem; font-size: .9rem; color: var(--muted); }
         .footer a { color: inherit; text-decoration: underline; }
         .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 1px, 1px); white-space: nowrap; border: 0; }
         .skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
-        .skip-link:focus { position: static; width: auto; height: auto; padding: .5rem .75rem; background: #111827; color: #ffffff; border-radius: .25rem; }
+        .skip-link:focus { position: static; width: auto; height: auto; padding: .5rem .75rem; background: var(--skip-bg); color: var(--skip-text); border-radius: .25rem; }
-        .hint { margin-top: .25rem; color: #374151; font-size: .9rem; }
+        .hint { margin-top: .25rem; color: var(--muted); font-size: .9rem; }
+        .inline-controls { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
+        .filter-box { border: 1px solid var(--border); border-radius: .5rem; padding: .5rem .75rem; margin: .5rem 0 1rem; }
         .word-list { list-style: none; padding: 0; margin: 0; }
+        #includes-list, #excludes-list { margin-top: .75rem; }
         .word-list li { display: inline-block; margin: 0 .25rem .25rem 0; }
-        fieldset { border: 1px solid #e5e7eb; border-radius: .5rem; padding: .75rem; }
+        fieldset { border: 1px solid var(--border); border-radius: .5rem; padding: .75rem; }
         legend { font-weight: 700; padding: 0 .25rem; }
+        .theme-toggle { background: var(--button-bg); color: var(--button-text); border: 1px solid var(--border); border-radius: .5rem; padding: .4rem .6rem; font-size: .95rem; margin-top: 0; }
+        .theme-toggle:focus { outline: 2px solid #3b82f6; outline-offset: 2px; }
+        .inline-controls .plus-button { margin-top: 0; margin-right: 0; }
+        .drop-target { outline: 2px dashed #3b82f6; outline-offset: 2px; }
     </style>
 </head>
 <body>
     <a href="#results" class="skip-link">Zum Ergebnisbereich springen</a>
     <div class="container">
+        <header class="page-header">
+            <button id="theme-toggle" class="theme-toggle" aria-pressed="false" aria-label="Theme umschalten" title="Theme umschalten">🌞/🌙</button>
             <h1>Wordle‑Cheater (Deutsch)</h1>
+        </header>
         <p>Wortliste geladen: <strong>{{ words_count }}</strong> Wörter</p>
 
         <main id="main" role="main">
-            <form method="post" aria-describedby="form-hint">
+            <form id="search-form" method="post" aria-describedby="form-hint">
                 <p id="form-hint" class="hint">Gib bekannte Buchstaben ein. Leere Felder werden ignoriert.</p>
 
                 <fieldset>
@@ -59,23 +116,48 @@
                         <input id="pos4" name="pos4" maxlength="1" aria-label="Position 4" inputmode="text" autocomplete="off" pattern="[A-Za-zÄÖÜäöüß]" value="{{ pos[3] }}" />
                         <input id="pos5" name="pos5" maxlength="1" aria-label="Position 5" inputmode="text" autocomplete="off" pattern="[A-Za-zÄÖÜäöüß]" value="{{ pos[4] }}" />
                     </div>
-                    <p id="pos-hint" class="hint">Je Feld genau ein Buchstabe. Umlaute (ä, ö, ü) und ß sind erlaubt.</p>
+                    <p id="pos-hint" class="hint">Je Feld ein Buchstabe. Ziehe einen Buchstaben heraus, wenn du ihn löschen möchtest.</p>
                 </fieldset>
 
-                <label for="includes">Weitere enthaltene Buchstaben (beliebige Reihenfolge)</label>
+                <label for="includes-input-one">Weitere enthaltene Buchstaben (beliebige Reihenfolge)</label>
-                <input id="includes" name="includes" aria-describedby="includes-hint" inputmode="text" autocomplete="off" value="{{ includes }}" />
+                <div class="inline-controls" aria-describedby="includes-hint">
-                <p id="includes-hint" class="hint">Mehrere Buchstaben ohne Trennzeichen eingeben (z. B. „aei“).</p>
+                    <input id="includes-input-one" maxlength="1" aria-label="Buchstabe hinzufügen (enthalten)" inputmode="text" autocomplete="off" pattern="[A-Za-zÄÖÜäöüß]" class="letter-input" />
+                    <button type="button" id="includes-add-button" class="plus-button" aria-label="Buchstabe zu 'Enthalten' hinzufügen">+</button>
+                    <input type="hidden" id="includes" name="includes" value="{{ includes }}" />
+                </div>
+                <ul id="includes-list" class="word-list" aria-live="polite"></ul>
+                <p id="includes-hint" class="hint">Gib einen Buchstaben ein und füge ihn mit „+“ zur Liste hinzu. Ziehe ihn auf ein Positionsfeld, wenn er dort passen würde.</p>
 
-                <label for="excludes">Ausgeschlossene Buchstaben</label>
+                <label for="excludes-input-one">Ausgeschlossene Buchstaben</label>
-                <input id="excludes" name="excludes" aria-describedby="excludes-hint" inputmode="text" autocomplete="off" value="{{ excludes }}" />
+                <div class="inline-controls" aria-describedby="excludes-hint">
-                <p id="excludes-hint" class="hint">Buchstaben, die nicht vorkommen (z. B. „rst“).</p>
+                    <input id="excludes-input-one" maxlength="1" aria-label="Buchstabe hinzufügen (ausschließen)" inputmode="text" autocomplete="off" pattern="[A-Za-zÄÖÜäöüß]" class="letter-input" />
+                    <button type="button" id="excludes-add-button" class="plus-button" aria-label="Buchstabe zu 'Ausschließen' hinzufügen">+</button>
+                    <input type="hidden" id="excludes" name="excludes" value="{{ excludes }}" />
+                </div>
+                <ul id="excludes-list" class="word-list" aria-live="polite"></ul>
+                <p id="excludes-hint" class="hint">Gib einen Buchstaben ein und füge ihn mit „+“ zur Liste hinzu.</p>
 
                 <button type="submit">Suchen</button>
+                <button type="button" id="reset-button" class="reset-button">Zurücksetzen</button>
             </form>
 
             {% if results is not none %}
                 <div class="results" id="results" role="region" aria-labelledby="results-title">
-                    <h2 id="results-title">Vorschläge ({{ results|length }})</h2>
+                    <h2 id="results-title">Vorschläge (<span id="visible-count">{{ results|length }}</span>)</h2>
+                    <fieldset class="filter-box" role="group">
+                        <legend>Wortquellen‑Filter</legend>
+                        <div class="inline-controls">
+                            <label><input id="filter-ot" type="checkbox" name="use_ot" form="search-form" {% if use_ot %}checked{% endif %}/> OT (OpenThesaurus)</label>
+                            <label><input id="filter-wf" type="checkbox" name="use_wf" form="search-form" {% if use_wf %}checked{% endif %}/> WF (wordfreq)</label>
+                        </div>
+                    </fieldset>
+                    <fieldset class="filter-box" role="group">
+                        <legend>Umlaute</legend>
+                        <div class="inline-controls">
+                            <label><input id="filter-umlaut" type="checkbox" /> Umlaute einbeziehen (ä, ö, ü, ß)</label>
+                        </div>
+                    </fieldset>
+                    <div class="results-box">
                         {% if results|length == 0 %}
                             <p>Keine Treffer. Bitte Bedingungen anpassen.</p>
                         {% else %}
@@ -83,9 +165,17 @@
                                 <summary>Liste anzeigen</summary>
                                 <ul class="word-list">
                                     {% for w in results %}
-                                    <li>
-                                        <span class="badge">{{ w }}
                                         {% set srcs = sources_map.get(w, []) %}
+                                        {% set has_umlaut = ('ä' in w or 'ö' in w or 'ü' in w or 'ß' in w) %}
+                                        <li data-sources="{{ srcs|join(' ') }}" data-umlaut="{{ 1 if has_umlaut else 0 }}">
+                                            <span class="badge">
+                                                {% for ch in w %}
+                                                    {% if ch in includes|lower %}
+                                                        <span class="letter included">{{ ch }}</span>
+                                                    {% else %}
+                                                        <span class="letter">{{ ch }}</span>
+                                                    {% endif %}
+                                                {% endfor %}
                                                 {% for s in srcs %}
                                                     {% if s == 'ot' %}
                                                         <span class="source ot">OT</span>
@@ -99,18 +189,277 @@
                                 </ul>
                             </details>
                         {% endif %}
+                    </div>
                     <p>
                         <strong>Legende:</strong>
-                        <span class="source wf">WF</span> = Wordfreq,
+                        <span class="source wf">WF</span> = <a href="https://pypi.org/project/wordfreq/" target="_blank" rel="noopener noreferrer">Wordfreq</a>,
-                        <span class="source ot">OT</span> = OpenThesaurus
+                        <span class="source ot">OT</span> = <a href="https://www.openthesaurus.de" target="_blank" rel="noopener noreferrer">OpenThesaurus</a>
                     </p>
                 </div>
             {% endif %}
         </main>
 
         <footer class="footer">
-            Made in 2025 with ❤️ and ☕ by <a href="mailto:elpatron@mailbox.org">Markus F.J. Busche</a>
+            Yet another <a href="https://gitea.elpatron.me/elpatron/wordle-cheater" rel="noopener noreferrer">Open Source Project</a>, vibe coded in less than 4 hours by <a href="mailto:elpatron@mailbox.org">Markus F.J. Busche</a>
         </footer>
     </div>
+
+    <script>
+        (function() {
+            var btn = document.getElementById('theme-toggle');
+            if (!btn) return;
+            function currentTheme() { return document.documentElement.getAttribute('data-theme') || 'light'; }
+            function setTheme(theme) {
+                document.documentElement.setAttribute('data-theme', theme);
+                try { localStorage.setItem('theme', theme); } catch (e) {}
+                btn.setAttribute('aria-pressed', theme === 'dark');
+                btn.textContent = theme === 'dark' ? '🌙' : '🌞';
+                btn.title = 'Theme umschalten (' + (theme === 'dark' ? 'Dunkel' : 'Hell') + ')';
+            }
+            setTheme(currentTheme());
+            btn.addEventListener('click', function() {
+                var next = currentTheme() === 'dark' ? 'light' : 'dark';
+                setTheme(next);
+            });
+        })();
+    </script>
+    <script>
+        function applyFilters() {
+            var ot = document.getElementById('filter-ot');
+            var wf = document.getElementById('filter-wf');
+            var uml = document.getElementById('filter-umlaut');
+            if (!ot || !wf) return;
+            var allowed = [];
+            if (ot.checked) allowed.push('ot');
+            if (wf.checked) allowed.push('wf');
+            var items = document.querySelectorAll('.word-list li');
+            var visible = 0;
+            items.forEach(function(li) {
+                var sources = (li.dataset.sources || '').split(/\s+/).filter(Boolean);
+                var hasUmlaut = li.dataset.umlaut === '1';
+                var showSource = allowed.length === 0 ? false : sources.some(function(s){ return allowed.indexOf(s) !== -1; });
+                var showUmlaut = uml && uml.checked ? true : !hasUmlaut; // an => alle, aus => ohne Umlaute
+                var show = showSource && showUmlaut;
+                li.style.display = show ? '' : 'none';
+                if (show) visible++;
+            });
+            var countEl = document.getElementById('visible-count');
+            if (countEl) countEl.textContent = String(visible);
+        }
+        function updateLettersList(listElementId, lettersString) {
+            var ul = document.getElementById(listElementId);
+            if (!ul) return;
+            while (ul.firstChild) ul.removeChild(ul.firstChild);
+            var letters = (lettersString || '')
+                .split('')
+                .filter(function(ch){ return !!ch; })
+                .map(function(ch){ return ch.toLowerCase(); })
+                .sort(function(a,b){ return a.localeCompare(b, 'de'); });
+            letters.forEach(function(ch){
+                var li = document.createElement('li');
+                var badge = document.createElement('span');
+                badge.className = 'badge';
+                var lower = ch.toLowerCase();
+                badge.textContent = lower.toUpperCase();
+                badge.setAttribute('data-letter', lower);
+                badge.title = 'Zum Entfernen klicken';
+                badge.setAttribute('aria-label', "Buchstabe '" + lower.toUpperCase() + "' entfernen");
+                // Drag & Drop für Includes-Liste aktivieren
+                if (listElementId === 'includes-list') {
+                    badge.draggable = true;
+                    badge.addEventListener('dragstart', function(e){
+                        try {
+                            e.dataTransfer.setData('text/plain', lower);
+                            e.dataTransfer.setData('text/list', listElementId);
+                            e.dataTransfer.effectAllowed = 'move';
+                        } catch (err) {}
+                    });
+                }
+                li.appendChild(badge);
+                ul.appendChild(li);
+            });
+        }
+        function removeLetterFromList(hiddenId, listId, letter) {
+            var hidden = document.getElementById(hiddenId);
+            if (!hidden) return;
+            var current = hidden.value || '';
+            var next = (current || '').split('').filter(function(ch){ return ch !== letter; }).join('');
+            hidden.value = next;
+            updateLettersList(listId, next);
+        }
+        function addLetterFromInput(inputId, hiddenId, listId) {
+            var input = document.getElementById(inputId);
+            var hidden = document.getElementById(hiddenId);
+            if (!input || !hidden) return;
+            var raw = (input.value || '').trim();
+            if (!raw) return;
+            var ch = raw[0];
+            if (!/[A-Za-zÄÖÜäöüß]/.test(ch)) { input.value = ''; return; }
+            var lower = ch.toLowerCase();
+            var current = hidden.value || '';
+            if (current.indexOf(lower) === -1) {
+                hidden.value = current + lower;
+                updateLettersList(listId, hidden.value);
+            }
+            input.value = '';
+            input.focus();
+        }
+        // Drag-Status für Positionsfelder
+        var dragSourcePosInput = null;
+        var dragAccepted = false;
+        window.addEventListener('load', function() {
+            var ot = document.getElementById('filter-ot');
+            var wf = document.getElementById('filter-wf');
+            var uml = document.getElementById('filter-umlaut');
+            if (ot) ot.addEventListener('change', applyFilters);
+            if (wf) wf.addEventListener('change', applyFilters);
+            if (uml) uml.addEventListener('change', applyFilters);
+            applyFilters();
+            // Status der Positionsfelder (filled) initial setzen und bei Eingaben aktualisieren
+            function updatePosFilledState() {
+                for (var i = 1; i <= 5; i++) {
+                    var el = document.getElementById('pos' + i);
+                    if (!el) continue;
+                    if ((el.value || '').trim()) el.classList.add('filled');
+                    else el.classList.remove('filled');
+                }
+            }
+            updatePosFilledState();
+            for (var i = 1; i <= 5; i++) {
+                (function(idx){
+                    var el = document.getElementById('pos' + idx);
+                    if (!el) return;
+                    el.addEventListener('input', updatePosFilledState);
+                    el.addEventListener('change', updatePosFilledState);
+                })(i);
+            }
+            // Listen initial aus Hidden-Feldern rendern
+            var hiddenInc = document.getElementById('includes');
+            var hiddenExc = document.getElementById('excludes');
+            updateLettersList('includes-list', hiddenInc ? hiddenInc.value : '');
+            updateLettersList('excludes-list', hiddenExc ? hiddenExc.value : '');
+            // Add-Buttons verdrahten
+            var addIncBtn = document.getElementById('includes-add-button');
+            if (addIncBtn) addIncBtn.addEventListener('click', function(){ addLetterFromInput('includes-input-one', 'includes', 'includes-list'); });
+            var addExcBtn = document.getElementById('excludes-add-button');
+            if (addExcBtn) addExcBtn.addEventListener('click', function(){ addLetterFromInput('excludes-input-one', 'excludes', 'excludes-list'); });
+            // Enter-Handling in den Ein-Feld-Eingaben
+            var incInputOne = document.getElementById('includes-input-one');
+            if (incInputOne) incInputOne.addEventListener('keydown', function(e){ if (e.key === 'Enter') { e.preventDefault(); addLetterFromInput('includes-input-one', 'includes', 'includes-list'); } });
+            var excInputOne = document.getElementById('excludes-input-one');
+            if (excInputOne) excInputOne.addEventListener('keydown', function(e){ if (e.key === 'Enter') { e.preventDefault(); addLetterFromInput('excludes-input-one', 'excludes', 'excludes-list'); } });
+            // Entfernen per Klick auf Badge (Event Delegation)
+            var incList = document.getElementById('includes-list');
+            if (incList) incList.addEventListener('click', function(e){
+                var t = e.target;
+                if (t && t.classList && t.classList.contains('badge')) {
+                    var letter = (t.getAttribute('data-letter') || t.textContent || '').trim().toLowerCase();
+                    if (letter) removeLetterFromList('includes', 'includes-list', letter);
+                }
+            });
+            var excList = document.getElementById('excludes-list');
+            if (excList) excList.addEventListener('click', function(e){
+                var t = e.target;
+                if (t && t.classList && t.classList.contains('badge')) {
+                    var letter = (t.getAttribute('data-letter') || t.textContent || '').trim().toLowerCase();
+                    if (letter) removeLetterFromList('excludes', 'excludes-list', letter);
+                }
+            });
+            // Drop-Ziele für Positionsfelder (pos1..pos5)
+            for (var i = 1; i <= 5; i++) {
+                (function(idx){
+                    var input = document.getElementById('pos' + idx);
+                    if (!input) return;
+                    // Als Drag-Quelle nutzbar machen
+                    input.draggable = true;
+                    input.addEventListener('dragstart', function(e){
+                        var val = (input.value || '').trim().toLowerCase();
+                        if (!val) { try { e.preventDefault(); } catch (err) {} return; }
+                        dragSourcePosInput = input;
+                        dragAccepted = false;
+                        try {
+                            e.dataTransfer.setData('text/plain', val);
+                            e.dataTransfer.setData('text/source', 'pos');
+                            e.dataTransfer.effectAllowed = 'move';
+                        } catch (err) {}
+                    });
+                    input.addEventListener('dragend', function(){
+                        if (dragSourcePosInput === input && !dragAccepted) {
+                            input.value = '';
+                            input.classList.remove('filled');
+                        }
+                        dragSourcePosInput = null;
+                        dragAccepted = false;
+                    });
+                    input.addEventListener('dragover', function(e){
+                        e.preventDefault();
+                        try { e.dataTransfer.dropEffect = 'move'; } catch (err) {}
+                        input.classList.add('drop-target');
+                    });
+                    input.addEventListener('dragleave', function(){ input.classList.remove('drop-target'); });
+                    input.addEventListener('drop', function(e){
+                        e.preventDefault();
+                        input.classList.remove('drop-target');
+                        var letter = (e.dataTransfer.getData('text/plain') || '').trim().toLowerCase();
+                        var sourceList = e.dataTransfer.getData('text/list') || '';
+                        var sourceType = e.dataTransfer.getData('text/source') || '';
+                        if (letter && /[a-zäöüß]/i.test(letter) && (sourceList === 'includes-list' || sourceType === 'pos')) {
+                            dragAccepted = true;
+                            input.value = letter;
+                            if ((input.value || '').trim()) input.classList.add('filled');
+                            if (sourceList === 'includes-list') {
+                                removeLetterFromList('includes', 'includes-list', letter);
+                            }
+                            if (sourceType === 'pos' && dragSourcePosInput && dragSourcePosInput !== input) {
+                                dragSourcePosInput.value = '';
+                                dragSourcePosInput.classList.remove('filled');
+                            }
+                            input.focus();
+                        }
+                    });
+                })(i);
+            }
+            
+            // Reset-Button Funktionalität
+            var resetButton = document.getElementById('reset-button');
+            if (resetButton) {
+                resetButton.addEventListener('click', function() {
+                    // Alle Positionsfelder zurücksetzen
+                    for (var i = 1; i <= 5; i++) {
+                        var posField = document.getElementById('pos' + i);
+                        if (posField) { posField.value = ''; posField.classList.remove('filled'); }
+                    }
+                    
+                    // Weitere Felder zurücksetzen
+                    var includesField = document.getElementById('includes');
+                    if (includesField) includesField.value = '';
+                    var includesList = document.getElementById('includes-list');
+                    if (includesList) includesList.innerHTML = '';
+                    var incInput = document.getElementById('includes-input-one');
+                    if (incInput) incInput.value = '';
+                    
+                    var excludesField = document.getElementById('excludes');
+                    if (excludesField) excludesField.value = '';
+                    var excludesList = document.getElementById('excludes-list');
+                    if (excludesList) excludesList.innerHTML = '';
+                    var excInput = document.getElementById('excludes-input-one');
+                    if (excInput) excInput.value = '';
+                    
+                    // Suchergebnisse ausblenden
+                    var resultsDiv = document.getElementById('results');
+                    if (resultsDiv) {
+                        resultsDiv.style.display = 'none';
+                    }
+                });
+            }
+        });
+    </script>
+    <script>
+        if ('serviceWorker' in navigator) {
+            window.addEventListener('load', function() {
+                navigator.serviceWorker.register('/sw.js');
+            });
+        }
+    </script>
 </body>
 </html>

templates/login.html

@@ -0,0 +1,117 @@
+<!doctype html>
+<html lang="de">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>Admin Login - Wordle‑Cheater</title>
+    <meta name="robots" content="noindex,nofollow" />
+    <style>
+        :root { --bg:#ffffff; --text:#111827; --muted:#6b7280; --border:#e5e7eb; --button-bg:#111827; --button-text:#ffffff; --error:#b91c1c; --success:#065f46; }
+        [data-theme="dark"] { --bg:#0b1220; --text:#e5e7eb; --muted:#9ca3af; --border:#334155; --button-bg:#e5e7eb; --button-text:#111827; --error:#ef4444; --success:#10b981; }
+        
+        html, body { background: var(--bg); color: var(--text); margin: 0; padding: 0; height: 100vh; }
+        body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; display: flex; align-items: center; justify-content: center; }
+        
+        .login-container { 
+            background: var(--bg); 
+            border: 1px solid var(--border); 
+            border-radius: 0.5rem; 
+            padding: 2rem; 
+            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
+            max-width: 400px;
+            width: 90%;
+        }
+        
+        .login-header { text-align: center; margin-bottom: 2rem; }
+        .login-header h1 { margin: 0; color: var(--text); }
+        .login-header p { color: var(--muted); margin: 0.5rem 0 0 0; }
+        
+        .form-group { margin-bottom: 1.5rem; }
+        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: var(--text); }
+        .form-group input { 
+            width: 100%; 
+            padding: 0.75rem; 
+            border: 1px solid var(--border); 
+            border-radius: 0.375rem; 
+            background: var(--bg); 
+            color: var(--text); 
+            font-size: 1rem;
+            box-sizing: border-box;
+        }
+        
+        .form-group input:focus { 
+            outline: none; 
+            border-color: #3b82f6; 
+            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1); 
+        }
+        
+        .submit-btn { 
+            width: 100%; 
+            padding: 0.75rem; 
+            background: var(--button-bg); 
+            color: var(--button-text); 
+            border: none; 
+            border-radius: 0.375rem; 
+            font-size: 1rem; 
+            font-weight: 600; 
+            cursor: pointer; 
+            transition: opacity 0.2s; 
+        }
+        
+        .submit-btn:hover { opacity: 0.9; }
+        .submit-btn:active { transform: translateY(1px); }
+        
+        .flash-messages { margin-bottom: 1.5rem; }
+        .flash { 
+            padding: 0.75rem; 
+            border-radius: 0.375rem; 
+            margin-bottom: 0.5rem; 
+            font-weight: 500; 
+        }
+        .flash.error { background: var(--error); color: white; }
+        .flash.success { background: var(--success); color: white; }
+        
+        .back-link { 
+            text-align: center; 
+            margin-top: 1.5rem; 
+        }
+        .back-link a { 
+            color: var(--muted); 
+            text-decoration: none; 
+            font-size: 0.9rem; 
+        }
+        .back-link a:hover { text-decoration: underline; }
+    </style>
+</head>
+<body>
+    <div class="login-container">
+        <div class="login-header">
+            <h1>🔐 Admin Login</h1>
+            <p>Statistik-Dashboard</p>
+        </div>
+        
+        {% with messages = get_flashed_messages(with_categories=true) %}
+            {% if messages %}
+                <div class="flash-messages">
+                    {% for category, message in messages %}
+                        <div class="flash {{ category }}">{{ message }}</div>
+                    {% endfor %}
+                </div>
+            {% endif %}
+        {% endwith %}
+        
+        <form method="POST">
+            <div class="form-group">
+                <label for="password">Passwort:</label>
+                <input type="password" id="password" name="password" required autocomplete="current-password">
+            </div>
+            
+            <button type="submit" class="submit-btn">Anmelden</button>
+        </form>
+        
+        <div class="back-link">
+            <a href="{{ url_for('index') }}">← Zurück zur Hauptseite</a>
+        </div>
+    </div>
+</body>
+</html>

templates/stats.html

@@ -0,0 +1,244 @@
+<!doctype html>
+<html lang="de">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>Statistiken - Wordle‑Cheater</title>
+    <meta name="robots" content="noindex,nofollow" />
+    <style>
+        :root { --bg:#ffffff; --text:#111827; --muted:#6b7280; --border:#e5e7eb; --button-bg:#111827; --button-text:#ffffff; --accent:#3b82f6; --success:#10b981; --warning:#f59e0b; }
+        [data-theme="dark"] { --bg:#0b1220; --text:#e5e7eb; --muted:#9ca3af; --border:#334155; --button-bg:#e5e7eb; --button-text:#111827; --accent:#60a5fa; --success:#34d399; --warning:#fbbf24; }
+        
+        html, body { background: var(--bg); color: var(--text); margin: 0; padding: 0; }
+        body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; line-height: 1.6; }
+        
+        .container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
+        
+        .header { 
+            display: flex; 
+            justify-content: space-between; 
+            align-items: center; 
+            margin-bottom: 2rem; 
+            padding-bottom: 1rem; 
+            border-bottom: 1px solid var(--border); 
+        }
+        
+        .header h1 { margin: 0; color: var(--text); }
+        .header .actions { display: flex; gap: 1rem; }
+        
+        .btn { 
+            padding: 0.5rem 1rem; 
+            background: var(--button-bg); 
+            color: var(--button-text); 
+            border: none; 
+            border-radius: 0.375rem; 
+            text-decoration: none; 
+            font-size: 0.9rem; 
+            cursor: pointer; 
+        }
+        
+        .btn:hover { opacity: 0.9; }
+        .btn.secondary { background: var(--muted); }
+        
+        .stats-grid { 
+            display: grid; 
+            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
+            gap: 1.5rem; 
+            margin-bottom: 2rem; 
+        }
+        
+        .stat-card { 
+            background: var(--bg); 
+            border: 1px solid var(--border); 
+            border-radius: 0.5rem; 
+            padding: 1.5rem; 
+            box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
+        }
+        
+        .stat-card h3 { margin: 0 0 1rem 0; color: var(--text); font-size: 1.1rem; }
+        .stat-number { font-size: 2.5rem; font-weight: bold; color: var(--accent); margin-bottom: 0.5rem; }
+        .stat-description { color: var(--muted); font-size: 0.9rem; }
+        
+        .chart-container { 
+            background: var(--bg); 
+            border: 1px solid var(--border); 
+            border-radius: 0.5rem; 
+            padding: 1.5rem; 
+            margin-bottom: 1.5rem; 
+        }
+        
+        .chart-container h3 { margin: 0 0 1rem 0; color: var(--text); }
+        
+        .bar-chart { display: flex; align-items: end; gap: 0.5rem; height: 200px; }
+        .bar { 
+            background: var(--accent); 
+            min-width: 40px; 
+            border-radius: 0.25rem 0.25rem 0 0; 
+            position: relative; 
+            display: flex; 
+            flex-direction: column; 
+            align-items: center; 
+        }
+        
+        .bar-label { 
+            position: absolute; 
+            bottom: -25px; 
+            font-size: 0.8rem; 
+            color: var(--muted); 
+            transform: rotate(-45deg); 
+            transform-origin: top left; 
+        }
+        
+        .bar-value { 
+            position: absolute; 
+            top: -25px; 
+            font-size: 0.8rem; 
+            color: var(--text); 
+            font-weight: 600; 
+        }
+        
+        .recent-activity { 
+            background: var(--bg); 
+            border: 1px solid var(--border); 
+            border-radius: 0.5rem; 
+            padding: 1.5rem; 
+        }
+        
+        .recent-activity h3 { margin: 0 0 1rem 0; color: var(--text); }
+        .activity-item { 
+            padding: 0.5rem 0; 
+            border-bottom: 1px solid var(--border); 
+            font-family: monospace; 
+            font-size: 0.85rem; 
+        }
+        .activity-item:last-child { border-bottom: none; }
+        
+        .activity-timestamp { color: var(--accent); font-weight: 600; }
+        
+        .search-patterns { 
+            background: var(--bg); 
+            border: 1px solid var(--border); 
+            border-radius: 0.5rem; 
+            padding: 1.5rem; 
+        }
+        
+        .search-patterns h3 { margin: 0 0 1rem 0; color: var(--text); }
+        .pattern-item { 
+            display: flex; 
+            justify-content: space-between; 
+            padding: 0.5rem 0; 
+            border-bottom: 1px solid var(--border); 
+        }
+        .pattern-item:last-child { border-bottom: none; }
+        .pattern-text { font-family: monospace; color: var(--text); }
+        .pattern-count { color: var(--accent); font-weight: 600; }
+        
+        .no-data { 
+            text-align: center; 
+            color: var(--muted); 
+            padding: 2rem; 
+            font-style: italic; 
+        }
+        
+        @media (max-width: 768px) {
+            .container { padding: 1rem; }
+            .header { flex-direction: column; gap: 1rem; align-items: stretch; }
+            .stats-grid { grid-template-columns: 1fr; }
+            .bar-chart { height: 150px; }
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="header">
+            <h1>📊 Statistik-Dashboard</h1>
+            <div class="actions">
+                <a href="{{ url_for('index') }}" class="btn secondary">← Hauptseite</a>
+                <a href="{{ url_for('logout') }}" class="btn">Abmelden</a>
+            </div>
+        </div>
+        
+        <div class="stats-grid">
+            <div class="stat-card">
+                <h3>📈 Gesamte Seitenaufrufe</h3>
+                <div class="stat-number">{{ stats.total_page_views }}</div>
+                <div class="stat-description">Alle protokollierten Seitenaufrufe</div>
+            </div>
+            
+            <div class="stat-card">
+                <h3>🔍 Gesamte Suchvorgänge</h3>
+                <div class="stat-number">{{ stats.total_searches }}</div>
+                <div class="stat-description">Alle durchgeführten Wortsuche</div>
+            </div>
+            
+            <div class="stat-card">
+                <h3>📱 Seitenaufrufe pro Seite</h3>
+                {% if stats.page_views_by_page %}
+                    {% for page, count in stats.page_views_by_page.items() %}
+                        <div style="margin-bottom: 0.5rem;">
+                            <strong>{{ page }}:</strong> {{ count }}
+                        </div>
+                    {% endfor %}
+                {% else %}
+                    <div class="no-data">Keine Daten verfügbar</div>
+                {% endif %}
+            </div>
+        </div>
+        
+        <div class="chart-container">
+            <h3>🔍 Suchvorgänge nach Quellen</h3>
+            {% if stats.searches_by_source and (stats.searches_by_source.OT > 0 or stats.searches_by_source.WF > 0 or stats.searches_by_source.Both > 0) %}
+                <div class="bar-chart">
+                    {% set max_count = [stats.searches_by_source.OT, stats.searches_by_source.WF, stats.searches_by_source.Both] | max %}
+                    {% if stats.searches_by_source.OT > 0 %}
+                        <div class="bar" style="height: {{ (stats.searches_by_source.OT / max_count * 150) + 50 }}px;">
+                            <div class="bar-value">{{ stats.searches_by_source.OT }}</div>
+                            <div class="bar-label">OpenThesaurus</div>
+                        </div>
+                    {% endif %}
+                    {% if stats.searches_by_source.WF > 0 %}
+                        <div class="bar" style="height: {{ (stats.searches_by_source.WF / max_count * 150) + 50 }}px;">
+                            <div class="bar-value">{{ stats.searches_by_source.WF }}</div>
+                            <div class="bar-label">Wordfreq</div>
+                        </div>
+                    {% endif %}
+                    {% if stats.searches_by_source.Both > 0 %}
+                        <div class="bar" style="height: {{ (stats.searches_by_source.Both / max_count * 150) + 50 }}px;">
+                            <div class="bar-value">{{ stats.searches_by_source.Both }}</div>
+                            <div class="bar-label">Beide</div>
+                        </div>
+                    {% endif %}
+                </div>
+            {% else %}
+                <div class="no-data">Keine Suchdaten verfügbar</div>
+            {% endif %}
+        </div>
+        
+        {% if stats.top_search_patterns %}
+        <div class="search-patterns">
+            <h3>🎯 Häufigste Suchmuster (Positionen)</h3>
+            {% for pattern, count in stats.top_search_patterns.items() | sort(attribute='1', reverse=true) %}
+                <div class="pattern-item">
+                    <span class="pattern-text">{{ pattern or '(leer)' }}</span>
+                    <span class="pattern-count">{{ count }}</span>
+                </div>
+            {% endfor %}
+        </div>
+        {% endif %}
+        
+        <div class="recent-activity">
+            <h3>⏰ Letzte Aktivitäten</h3>
+            {% if stats.recent_activity %}
+                {% for activity in stats.recent_activity %}
+                    <div class="activity-item">
+                        <span class="activity-timestamp">{{ activity.timestamp }}</span>
+                        <span>{{ activity.line.split(' - ', 2)[2] if ' - ' in activity.line else activity.line }}</span>
+                    </div>
+                {% endfor %}
+            {% else %}
+                <div class="no-data">Keine Aktivitäten verfügbar</div>
+            {% endif %}
+        </div>
+    </div>
+</body>
+</html>