diff --git a/paramod.yaml b/paramod.yaml
index 13aa6ba..5213458 100644
--- a/paramod.yaml
+++ b/paramod.yaml
@@ -1,5 +1,6 @@
 default:
   loglevel: "DEBUG"
+  darkmode: true
 
 mqtt:
   broker: "192.168.178.2"
diff --git a/src/config.rs b/src/config.rs
index 7284ac4..0e7a9fa 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,21 @@
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct DefaultConfig {
+    pub loglevel: Option<String>,
+    pub darkmode: Option<bool>,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct ModbusConfig {
+    pub host: String,
+    pub port: u16,
+    pub max_coils_addr: Option<u16>,
+    pub max_input_addr: Option<u16>,
+    pub max_holding_addr: Option<u16>,
+}
+
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct MqttConfig {
     pub broker: String,
@@ -30,20 +45,6 @@ pub struct ModbusRegisterConfig {
     pub comment: Option<String>,
 }
 
-#[derive(Debug, Serialize, Deserialize, Clone)]
-pub struct ModbusConfig {
-    pub host: String,
-    pub port: u16,
-    pub max_coils_addr: Option<u16>,
-    pub max_input_addr: Option<u16>,
-    pub max_holding_addr: Option<u16>,
-}
-
-#[derive(Debug, Serialize, Deserialize, Clone)]
-pub struct DefaultConfig {
-    pub loglevel: Option<String>,
-}
-
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct AppConfig {
     pub default: DefaultConfig,
diff --git a/src/main.rs b/src/main.rs
index 20f742a..90045ba 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,3 @@
-
 use actix_web::{web, App, HttpResponse, HttpServer, Result};
 use actix_files as actix_fs;
 use std::sync::{Mutex, Arc};
@@ -12,9 +11,6 @@ mod modbus;
 use crate::config::{AppConfig, ModbusRegisterConfig, ModbusValueMaps};
 
 
-
-// ...existing code...
-
 struct AppState {
     config: Mutex<AppConfig>,
     value_maps: Arc<Mutex<ModbusValueMaps>>,
@@ -44,9 +40,6 @@ impl AppState {
     }
 }
 
-
-// ...existing code...
-
 async fn index(data: web::Data<AppState>) -> Result<HttpResponse> {
     let config = data.config.lock().unwrap();
     let value_maps = data.value_maps.lock().unwrap();
@@ -184,6 +177,11 @@ async fn save_settings(
     Ok(HttpResponse::Ok().body("success"))
 }
 
+async fn get_config(data: web::Data<AppState>) -> HttpResponse {
+    let config = data.config.lock().unwrap();
+    HttpResponse::Ok().json(&*config)
+}
+
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
 
@@ -215,6 +213,7 @@ async fn main() -> std::io::Result<()> {
             .route("/settings", web::get().to(settings_page))
             .route("/api/save", web::post().to(save_table))
             .route("/api/save-settings", web::post().to(save_settings))
+            .route("/api/config", web::get().to(get_config))
             .service(actix_fs::Files::new("/static", "./static"))
     })
     .bind("0.0.0.0:8080")?
diff --git a/static/script.js b/static/script.js
index 3739c6f..da594c6 100644
--- a/static/script.js
+++ b/static/script.js
@@ -1,11 +1,15 @@
 // Sortiere die Tabelle nach Adresse (addr) beim Laden der Seite
 document.addEventListener('DOMContentLoaded', function() {
-    // Darkmode-Status aus localStorage übernehmen
-    if (localStorage.getItem('darkmode') === 'true') {
-        document.body.classList.add('darkmode');
-    } else {
-        document.body.classList.remove('darkmode');
-    }
+    // Darkmode-Status aus Konfiguration übernehmen
+    fetch('/api/config')
+        .then(response => response.json())
+        .then(config => {
+            if (config && config.default && config.default.darkmode === true) {
+                document.body.classList.add('darkmode');
+            } else {
+                document.body.classList.remove('darkmode');
+            }
+        });
     const tableBody = document.getElementById('tableBody');
     if (tableBody) {
         // Extrahiere alle Zeilen und deren addr
diff --git a/static/settings.js b/static/settings.js
index 16f2493..9f6a08f 100644
--- a/static/settings.js
+++ b/static/settings.js
@@ -1,4 +1,44 @@
+// Setze den Wert des Darkmode-Schalters beim Laden der Seite, sobald das Element existiert
+document.addEventListener('DOMContentLoaded', function() {
+    fetch('/api/config')
+        .then(response => response.json())
+        .then(config => {
+            function setSwitch() {
+                const el = document.getElementById('darkmode_switch');
+                if (el) {
+                    if (config && config.default && (config.default.darkmode === true || config.default.darkmode === 'true')) {
+                        el.checked = true;
+                    } else {
+                        el.checked = false;
+                    }
+                } else {
+                    // Falls das Element noch nicht existiert, erneut versuchen
+                    setTimeout(setSwitch, 50);
+                }
+            }
+            setSwitch();
+        });
+});
 async function saveSettings() {
+    // Default (für [default])
+    const darkmode = document.getElementById('darkmode_switch')?.checked ?? null;
+    const defaultConfig = {
+        loglevel: document.getElementById('loglevel')?.value || null,
+        darkmode: darkmode
+    };
+
+    // Modbus
+    const modbus = {
+        host: document.getElementById('modbus_host').value,
+        port: parseInt(document.getElementById('modbus_port').value, 10),
+        max_coils_addr: parseInt(document.getElementById('modbus_max_coils_addr').value, 10) || null,
+        max_input_addr: parseInt(document.getElementById('modbus_max_input_addr').value, 10) || null,
+        max_holding_addr: parseInt(document.getElementById('modbus_max_holding_addr').value, 10) || null,
+        modbus_coils: null,
+        modbus_input_register: null,
+        modbus_holding_register: null
+    };
+
     // MQTT
     const mqtt = {
         broker: document.getElementById('mqtt_broker').value,
@@ -18,28 +58,11 @@ async function saveSettings() {
         measurement: document.getElementById('influxdb_measurement').value || null
     };
 
-    // Modbus
-    const modbus = {
-        host: document.getElementById('modbus_host').value,
-        port: parseInt(document.getElementById('modbus_port').value, 10),
-        max_coils_addr: parseInt(document.getElementById('modbus_max_coils_addr').value, 10) || null,
-        max_input_addr: parseInt(document.getElementById('modbus_max_input_addr').value, 10) || null,
-        max_holding_addr: parseInt(document.getElementById('modbus_max_holding_addr').value, 10) || null,
-        modbus_coils: null,
-        modbus_input_register: null,
-        modbus_holding_register: null
-    };
-
-    // Default (für [default])
-    const defaultConfig = {
-        loglevel: document.getElementById('loglevel')?.value || null
-    };
-
     const settings = {
         default: defaultConfig,
+        modbus,
         mqtt,
-        influxdb,
-        modbus
+        influxdb
     };
 
     try {
@@ -70,16 +93,3 @@ async function saveSettings() {
     }
 }
 
-// Darkmode Toggle
-document.addEventListener('DOMContentLoaded', function() {
-    const btn = document.getElementById('darkmode-toggle');
-    if (!btn) return;
-    // Initialer Zustand aus LocalStorage
-    if (localStorage.getItem('darkmode') === 'true') {
-        document.body.classList.add('darkmode');
-    }
-    btn.addEventListener('click', function() {
-        document.body.classList.toggle('darkmode');
-        localStorage.setItem('darkmode', document.body.classList.contains('darkmode'));
-    });
-});
diff --git a/templates/settings.html b/templates/settings.html
index 55c2c60..168f202 100644
--- a/templates/settings.html
+++ b/templates/settings.html
@@ -41,9 +41,37 @@
                     <option value="WARN">WARN</option>
                     <option value="ERROR">ERROR</option>
                 </select>
-                </div>
-                <div class="form-group" style="text-align:right;">
-                    <button id="darkmode-toggle" class="add-btn" type="button">🌙 Darkmode umschalten</button>
+            </div>
+            <div class="form-group" style="display: flex; align-items: center; gap: 12px;">
+                <label for="darkmode_switch">Darkmode:</label>
+                <label class="switch">
+                    <input type="checkbox" id="darkmode_switch">
+                    <span class="slider"></span>
+                </label>
+            </div>
+        </div>
+
+        <div class="settings-section">
+            <h2>Modbus Konfiguration</h2>
+            <div class="form-group">
+                <label for="modbus_host">Host:</label>
+                <input type="text" id="modbus_host" class="text-input" value="{{ modbus.host }}" />
+            </div>
+            <div class="form-group">
+                <label for="modbus_port">Port:</label>
+                <input type="text" id="modbus_port" class="text-input" value="{{ modbus.port }}" />
+            </div>
+            <div class="form-group">
+                <label for="modbus_max_coils_addr">Max Coils Addr:</label>
+                <input type="text" id="modbus_max_coils_addr" class="text-input" value="{{ modbus.max_coils_addr | default(value="") }}" />
+            </div>
+            <div class="form-group">
+                <label for="modbus_max_input_addr">Max Input Addr:</label>
+                <input type="text" id="modbus_max_input_addr" class="text-input" value="{{ modbus.max_input_addr | default(value="") }}" />
+            </div>
+            <div class="form-group">
+                <label for="modbus_max_holding_addr">Max Holding Addr:</label>
+                <input type="text" id="modbus_max_holding_addr" class="text-input" value="{{ modbus.max_holding_addr | default(value="") }}" />
             </div>
         </div>
 
@@ -99,30 +127,6 @@
             </div>
         </div>
 
-        <div class="settings-section">
-            <h2>Modbus Konfiguration</h2>
-            <div class="form-group">
-                <label for="modbus_host">Host:</label>
-                <input type="text" id="modbus_host" class="text-input" value="{{ modbus.host }}" />
-            </div>
-            <div class="form-group">
-                <label for="modbus_port">Port:</label>
-                <input type="text" id="modbus_port" class="text-input" value="{{ modbus.port }}" />
-            </div>
-            <div class="form-group">
-                <label for="modbus_max_coils_addr">Max Coils Addr:</label>
-                <input type="text" id="modbus_max_coils_addr" class="text-input" value="{{ modbus.max_coils_addr | default(value="") }}" />
-            </div>
-            <div class="form-group">
-                <label for="modbus_max_input_addr">Max Input Addr:</label>
-                <input type="text" id="modbus_max_input_addr" class="text-input" value="{{ modbus.max_input_addr | default(value="") }}" />
-            </div>
-            <div class="form-group">
-                <label for="modbus_max_holding_addr">Max Holding Addr:</label>
-                <input type="text" id="modbus_max_holding_addr" class="text-input" value="{{ modbus.max_holding_addr | default(value="") }}" />
-            </div>
-        </div>
-
         <button class="save-btn" onclick="saveSettings()">💾 Einstellungen speichern</button>
     </div>