Refactor URL handling and improve navigation: Updated .htaccess for cleaner URL structure by removing .php extensions and redirecting to clean URLs. Modified various pages to use absolute paths for links, enhancing consistency and user experience. Updated error pages and footer links accordingly.

public/.htaccess

@@ -23,19 +23,26 @@
     RewriteCond %{HTTP_HOST} ^(www\.)?hexahost\.de$ [NC]
     RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
     
-    # HTML zu PHP Weiterleitungen
+    # PHP-Endung aus URLs entfernen
+    # Schritt 1: Wenn .php in URL, weiterleiten auf saubere URL (301)
+    RewriteCond %{THE_REQUEST} \s/([^.]+)\.php[\s?] [NC]
+    RewriteCond %{REQUEST_URI} !^/(contact-handler|config/)
+    RewriteRule ^(.+)\.php$ /$1 [R=301,L]
+    
+    # Schritt 2: index.php zur Startseite weiterleiten
+    RewriteCond %{THE_REQUEST} \s/index\.php[\s?] [NC]
+    RewriteRule ^index\.php$ / [R=301,L]
+    
+    # Schritt 3: Saubere URLs intern auf .php-Dateien umleiten
     RewriteCond %{REQUEST_FILENAME} !-f
     RewriteCond %{REQUEST_FILENAME} !-d
-    RewriteRule ^([^\.]+)\.html$ $1.php [L,R=301]
+    RewriteCond %{REQUEST_FILENAME}.php -f
+    RewriteRule ^(.+)$ $1.php [L]
     
-    # Direkte HTML zu PHP Weiterleitungen für bekannte Seiten
-    RewriteRule ^index\.html$ index.php [L,R=301]
-    RewriteRule ^about\.html$ about.php [L,R=301]
-    RewriteRule ^contact\.html$ contact.php [L,R=301]
-    RewriteRule ^vpc\.html$ vpc.php [L,R=301]
-    RewriteRule ^vps\.html$ vps.php [L,R=301]
-    RewriteRule ^webhosting\.html$ webhosting.php [L,R=301]
-    RewriteRule ^mail-gateway\.html$ mail-gateway.php [L,R=301]
+    # HTML zu PHP Weiterleitungen (Legacy-Support)
+    RewriteCond %{REQUEST_FILENAME} !-f
+    RewriteCond %{REQUEST_FILENAME} !-d
+    RewriteRule ^([^\.]+)\.html$ $1 [L,R=301]
 </IfModule>
 
 # Konfigurationsdateien schützen