Add sitemap.xml and robots.txt for SEO optimization

README.md

@@ -42,7 +42,7 @@ Diese moderne Python-Webanwendung (Flask) ermöglicht verschiedene Datumsberechn
 
 Datumsrechner Live: [https://date.elpatron.me](https://date.elpatron.me)
 
-![App Screenshot](./assets/image-20250725095959116.png)
+[![App Screenshot](./assets/image-20250725095959116.png)](https://date.elpatron.me)
 
 **[Lighthouse](https://en.wikipedia.org/wiki/Lighthouse_(software))-Performance-Score:** 
 

app.py

@@ -503,6 +503,12 @@ def api_docs():
     response = make_response(render_template('swagger.html'))
     return add_cache_headers(response)
 
+@app.route('/sitemap.xml')
+def sitemap():
+    """Serviert die Sitemap für Suchmaschinen"""
+    from flask import send_file
+    return send_file('sitemap.xml', mimetype='application/xml')
+
 
 if __name__ == '__main__':
     app.run(debug=True, host="0.0.0.0")

robots.txt

@@ -1,2 +1,14 @@
 User-agent: *
 Allow: /
+
+# Sitemap
+Sitemap: https://date.elpatron.me/sitemap.xml
+
+# Disallow private areas
+Disallow: /stats
+Disallow: /log/
+Disallow: /htmlcov/
+
+# Allow API endpoints for documentation
+Allow: /api-docs
+Allow: /static/swagger.json 

sitemap.xml

@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <!-- Hauptseite -->
+  <url>
+    <loc>https://date.elpatron.me/</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>1.0</priority>
+  </url>
+  
+  <!-- API-Dokumentation -->
+  <url>
+    <loc>https://date.elpatron.me/api-docs</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+  </url>
+  
+  <!-- Statische Ressourcen -->
+  <url>
+    <loc>https://date.elpatron.me/static/favicon.ico</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>yearly</changefreq>
+    <priority>0.1</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/static/favicon.png</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>yearly</changefreq>
+    <priority>0.1</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/static/favicon.svg</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>yearly</changefreq>
+    <priority>0.1</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/static/logo.svg</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>yearly</changefreq>
+    <priority>0.1</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/static/manifest.json</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.3</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/static/service-worker.js</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.3</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/static/swagger.json</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.5</priority>
+  </url>
+  
+  <!-- Sprachversionen der Hauptseite -->
+  <url>
+    <loc>https://date.elpatron.me/?lang=de</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.9</priority>
+  </url>
+  
+  <url>
+    <loc>https://date.elpatron.me/?lang=en</loc>
+    <lastmod>2025-08-03</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.9</priority>
+  </url>
+</urlset> 

templates/index.html

@@ -498,9 +498,9 @@ button:focus, .accordion-header:focus {
     position: absolute;
     top: 0.5em;
     right: 0.5em;
-    background: rgba(37, 99, 235, 0.15);
-    color: var(--primary-dark);
-    border: 1px solid var(--border);
+    background: #ffffff;
+    color: #000000;
+    border: 2px solid #000000;
     border-radius: 4px;
     padding: 0.3em 0.6em;
     font-size: 0.8em;
@@ -514,19 +514,20 @@ button:focus, .accordion-header:focus {
     z-index: 5;
 }
 .read-aloud-btn:hover {
-    background: rgba(37, 99, 235, 0.25);
-    border-color: var(--primary);
+    background: #f0f0f0;
+    border-color: #333333;
 }
 .read-aloud-btn:focus {
     outline: 3px solid #facc15;
     outline-offset: 2px;
     box-shadow: 0 0 0 4px #1e293b;
-    background: rgba(37, 99, 235, 0.25);
-    border-color: var(--primary);
+    background: #f0f0f0;
+    border-color: #333333;
 }
 .read-aloud-btn.playing {
-    background: var(--primary);
-    color: white;
+    background: #000000;
+    color: #ffffff;
+    border-color: #000000;
 }
 .accordion {
     border-radius: 12px;
@@ -1499,7 +1500,7 @@ footer br + a {
                             {% if request.form.get('werktage') %}
                                 {{ _('Anzahl der Werktage zwischen') }} <b>{{ format_date(request.form.get('start1', '')) }}</b> {{ _('und') }} <b>{{ format_date(request.form.get('end1', '')) }}:</b>{% if request.form.get('bundesland') %} {{ _('(Feiertage:') }} {{ request.form.get('bundesland') }}){% endif %}: {{ tage }}
                             {% else %}
-                                {{ _('Anzahl der Tage zwischen') }} <b>{{ format_date(request.form.get('start1', '')) }}</b> {{ _('und') }} <b>{{ format_date(request.form.get('end1', '')) }}</b>: {{ tage }}.
+                                {{ _('Anzahl der Tage zwischen') }} <b>{{ format_date(request.form.get('start1', '')) }}</b> {{ _('und') }} <b>{{ format_date(request.form.get('end1', '')) }}</b>: {{ tage }}
                             {% endif %}
                             {% if wochenendtage_anzahl is not none or (feiertage_anzahl is not none and request.form.get('bundesland')) %}
                                 <br>