Change footer text

- Add footer with 'Open Source Software' link to Gitea repository
- Link to https://gitea.elpatron.me/elpatron/emoji-suche
- Attribution to Markus F.J. Busche with emojipedia reference
- Responsive footer styling with hover effects
- Opens in new tab with security attributes

templates/index.html

@@ -162,6 +162,27 @@
             font-size: 14px;
         }
 
+        .footer {
+            text-align: center;
+            margin-top: 40px;
+            padding: 20px 0;
+            color: #666;
+            font-size: 14px;
+            border-top: 1px solid #e0e0e0;
+        }
+
+        .footer a {
+            color: #667eea;
+            text-decoration: none;
+            font-weight: 500;
+            transition: color 0.3s ease;
+        }
+
+        .footer a:hover {
+            color: #764ba2;
+            text-decoration: underline;
+        }
+
         @media (max-width: 768px) {
             .container {
                 padding: 20px;
@@ -179,6 +200,12 @@
             .emoji-display {
                 font-size: 3em;
             }
+
+            .footer {
+                font-size: 12px;
+                margin-top: 30px;
+                padding: 15px 0;
+            }
         }
     </style>
 </head>
@@ -198,6 +225,10 @@
         <div id="noResults" class="no-results" style="display: none;">
             Keine Emojis gefunden. Versuche einen anderen Suchbegriff!
         </div>
+        
+        <footer class="footer">
+            Privacy friendly<a href="https://gitea.elpatron.me/elpatron/emoji-suche" target="_blank" rel="noopener noreferrer">Open Source Software</a> vibe coded in 2025 by Markus F.J. Busche. 💀 emojipedia!
+        </footer>
     </div>
 
     <script>