diff --git a/app.py b/app.py
index ad79080..5701dea 100644
--- a/app.py
+++ b/app.py
@@ -771,7 +771,7 @@ def advanced_schedule():
 
 @app.route('/toggle_dark_mode')
 def toggle_dark_mode():
-    current_mode = session.get('dark_mode', False)
+    current_mode = session.get('dark_mode', True)
     session['dark_mode'] = not current_mode
     return redirect(request.referrer or url_for('index'))
 
diff --git a/templates/base.html b/templates/base.html
index 2b6ac70..e13abab 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="pl" class="{% if session.dark_mode %}dark-mode{% endif %}">
+<html lang="pl" class="{% if session.get('dark_mode', True) %}dark-mode{% endif %}">
 <head>
   <meta charset="UTF-8" />
   <title>Backup RouterOS App</title>
@@ -7,49 +7,135 @@
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css">
 
   <style>
+    /* Ogólne style trybu ciemnego */
     .dark-mode body {
-      background-color: #222;
+      background-color: #111111;
       color: #ffffff;
     }
-    .dark-mode a, .dark-mode a:hover {
+    .dark-mode a,
+    .dark-mode a:hover {
       color: #ddd;
     }
-    .dark-mode .navbar, .dark-mode .table {
+    
+    /* Nawigacja i menu */
+    .dark-mode .navbar,
+    .dark-mode .navbar-nav,
+    .dark-mode .dropdown-menu {
       background-color: #333 !important;
       color: #fff;
     }
+    .dark-mode .navbar-nav .nav-link {
+      color: #ddd !important;
+    }
+    .dark-mode .navbar-nav .nav-link:hover {
+      color: #fff !important;
+    }
+    
+    /* Tabele */
+    .dark-mode .table {
+      background-color: #333 !important;
+      border-color: #444;
+    }
+    .dark-mode .table thead th {
+      background-color: #444;
+      color: #fff;
+      border: 1px solid #555;
+    }
+    .dark-mode .table tbody td {
+      color: #ddd;
+      border: 1px solid #555;
+    }
+    
+    /* Pola formularzy */
+    .dark-mode input,
+    .dark-mode textarea,
+    .dark-mode select {
+      background-color: #333;
+      color: #fff;
+      border: 1px solid #555;
+    }
+    .dark-mode ::placeholder {
+      color: #ccc;
+    }
+    
+    /* Przyciski - poprawiony kontrast dla btn-warning */
+    .dark-mode .btn-warning {
+      background-color: #d39e00;
+      border-color: #b38600;
+      color: #fff;
+    }
+    .dark-mode .btn-secondary {
+      background-color: #444;
+      border-color: #555;
+      color: #fff;
+    }
+    
+    /* Bloki (np. zawartość kontenera, karty) */
+    .dark-mode .block, .dark-mode .card {
+      background-color: #171717;
+      color: #fff;
+    }
+    
+    /* Stopka */
+    .dark-mode footer {
+      background-color: #333 !important;
+      color: #fff !important;
+    }
+    
+
+    /* Alerty – pozostają bez zmian */
     .diff-add { color: green; }
     .diff-rem { color: red; }
-  </style>
 
-    <!-- Blok head umożliwiający dołączenie dodatkowych stylów -->
-    {% block head %}{% endblock %}
+    /* Dodatkowe nadpisanie styli diff2html w trybie ciemnym */
+    .dark-mode .d2h-wrapper,
+    .dark-mode .d2h-file-header,
+    .dark-mode .d2h-file-info,
+    .dark-mode .d2h-file-diff,
+    .dark-mode .d2h-diff-table,
+    .dark-mode .d2h-code-line,
+    .dark-mode .d2h-code-line-ctn,
+    .dark-mode .d2h-code-side-linenumber {
+      background-color: #333 !important;
+      color: #ddd !important;
+      border-color: #444 !important;
+    }
+
+
+</style>
+
+  <!-- Blok head umożliwiający dołączenie dodatkowych stylów -->
+  {% block head %}{% endblock %}
 </head>
 <body>
   <nav class="navbar navbar-expand navbar-dark bg-dark mb-4">
     <div class="container-fluid">
       <a href="{{ url_for('index') }}" class="navbar-brand">RouterOS Backup</a>
-      <div>
+      <div class="d-flex align-items-center">
         {% if session.user_id %}
           <a href="{{ url_for('dashboard') }}" class="btn btn-secondary me-2">Dashboard</a>
           <a href="{{ url_for('routers_list') }}" class="btn btn-secondary me-2">Urządzenia</a>
           <a href="{{ url_for('diff_selector') }}" class="btn btn-secondary me-2">Diff selector</a>
           <a href="{{ url_for('all_files') }}" class="btn btn-secondary me-2">Wszystkie pliki</a>
           <a href="{{ url_for('logs_page') }}" class="btn btn-secondary me-2">Logi</a>
-
           <a href="{{ url_for('settings_view') }}" class="btn btn-secondary me-2">Ustawienia</a>
-          <a href="{{ url_for('advanced_schedule') }}" class="btn btn-secondary me-2">Harmonogram</a> 
-
+          <a href="{{ url_for('advanced_schedule') }}" class="btn btn-secondary me-2">Harmonogram</a>
           <a href="{{ url_for('change_password') }}" class="btn btn-secondary me-2">Zmiana hasła</a>
+          <a href="{{ url_for('toggle_dark_mode') }}" class="btn btn-warning me-2">
+            {% if session.get('dark_mode', True) %}Jasny tryb{% else %}Ciemny tryb{% endif %}
+          </a>
           <a href="{{ url_for('logout') }}" class="btn btn-secondary me-2">Wyloguj</a>
         {% else %}
           <a href="{{ url_for('login') }}" class="btn btn-secondary me-2">Zaloguj</a>
           <a href="{{ url_for('register') }}" class="btn btn-secondary me-2">Utwórz konto</a>
+          <a href="{{ url_for('toggle_dark_mode') }}" class="btn btn-warning me-2">
+            {% if session.get('dark_mode', True) %}Jasny tryb{% else %}Ciemny tryb{% endif %}
+          </a>
         {% endif %}
-         <!--<a href="{{ url_for('toggle_dark_mode') }}" class="btn btn-warning">Toggle Dark Mode</a>-->
       </div>
     </div>
   </nav>
+
   <div class="container">
     {% with messages = get_flashed_messages() %}
       {% if messages %}
@@ -64,27 +150,26 @@
     {% block content %}{% endblock %}
   </div>
 
-
   <!-- Modal Test Połączenia -->
-<div class="modal fade" id="testConnectionModal" tabindex="-1" aria-labelledby="testConnectionModalLabel" aria-hidden="true">
-  <div class="modal-dialog modal-lg">
-    <div class="modal-content">
-      <div class="modal-header">
-        <h5 class="modal-title" id="testConnectionModalLabel">Test Połączenia</h5>
-        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Zamknij"></button>
-      </div>
-      <div class="modal-body" id="testConnectionModalBody">
-        <!-- Zawartość zostanie załadowana przez AJAX -->
+  <div class="modal fade" id="testConnectionModal" tabindex="-1" aria-labelledby="testConnectionModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-lg">
+      <div class="modal-content">
+        <div class="modal-header">
+          <h5 class="modal-title" id="testConnectionModalLabel">Test Połączenia</h5>
+          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Zamknij"></button>
+        </div>
+        <div class="modal-body" id="testConnectionModalBody">
+          <!-- Zawartość zostanie załadowana przez AJAX -->
+        </div>
       </div>
     </div>
   </div>
-</div>
 
-<footer class="footer bg-light py-3 mt-auto">
-  <div class="container text-center">
-    <span class="text-muted">&copy; 2025 RouterOS Backup</span>
-  </div>
-</footer>
+  <footer class="footer py-3 mt-auto">
+    <div class="container text-center">
+      <span>&copy; 2025 Mateusz Gruszczyński, linuxiarz.pl</span>
+    </div>
+  </footer>
 
   <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script>
   <script>
@@ -97,7 +182,6 @@
       .then(data => {
         if(data.status === "success"){
           alert("Eksport wykonany: " + data.message);
-          // Możesz też zaktualizować część strony dynamicznie
         } else {
           alert("Błąd eksportu: " + data.message);
         }
@@ -107,22 +191,22 @@
         alert("Wystąpił błąd.");
       });
     }
-    </script>
-    <script>
-      function openTestConnectionModal(routerId) {
-        fetch('/router/' + routerId + '/test_connection?modal=1')
-          .then(response => response.text())
-          .then(html => {
-            document.getElementById('testConnectionModalBody').innerHTML = html;
-            var myModal = new bootstrap.Modal(document.getElementById('testConnectionModal'));
-            myModal.show();
-          })
-          .catch(error => {
-            console.error("Błąd ładowania modalu: ", error);
-            alert("Wystąpił błąd podczas ładowania danych.");
-          });
-      }
-      </script>
+  </script>
+  <script>
+    function openTestConnectionModal(routerId) {
+      fetch('/router/' + routerId + '/test_connection?modal=1')
+        .then(response => response.text())
+        .then(html => {
+          document.getElementById('testConnectionModalBody').innerHTML = html;
+          var myModal = new bootstrap.Modal(document.getElementById('testConnectionModal'));
+          myModal.show();
+        })
+        .catch(error => {
+          console.error("Błąd ładowania modalu: ", error);
+          alert("Wystąpił błąd podczas ładowania danych.");
+        });
+    }
+  </script>
   <!-- Blok scripts umożliwiający dołączenie dodatkowych skryptów -->
   {% block scripts %}{% endblock %}
 </body>
diff --git a/templates/diff.html b/templates/diff.html
index 60b7993..df774b3 100644
--- a/templates/diff.html
+++ b/templates/diff.html
@@ -26,3 +26,4 @@
   });
 </script>
 {% endblock %}
+GET | 200 | 45 ms
\ No newline at end of file
