diff --git a/simplelogin-gui/Cargo.toml b/simplelogin-gui/Cargo.toml
index 396c343..2246fd9 100644
--- a/simplelogin-gui/Cargo.toml
+++ b/simplelogin-gui/Cargo.toml
@@ -6,6 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-gtk4 = { version = "0.7.3", features = ["blueprint"] }
+gtk4 = { version = "0.7.3", features = ["blueprint", "v4_12"] }
 simplelogin = { version = "0.1.0", path = "../simplelogin" }
 tokio = { version = "1.33.0", features = ["full"] }
diff --git a/simplelogin-gui/res.old/global.css b/simplelogin-gui/data/global.css
similarity index 100%
rename from simplelogin-gui/res.old/global.css
rename to simplelogin-gui/data/global.css
diff --git a/simplelogin-gui/data/im.zander.SimpleLogin.gschema.xml b/simplelogin-gui/data/im.zander.SimpleLogin.gschema.xml
index bf42b08..0e59605 100644
--- a/simplelogin-gui/data/im.zander.SimpleLogin.gschema.xml
+++ b/simplelogin-gui/data/im.zander.SimpleLogin.gschema.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <schemalist>
   <schema id="im.zander.SimpleLogin" path="/im/zander/SimpleLogin/">
-    <key name="api-key" type="s">
-      <default>""</default>
+    <key name="api-key" type="ms">
+      <default>nothing</default>
       <summary>Api key</summary>
       <description>The api key for the current user</description>
     </key>
diff --git a/simplelogin-gui/data/login_window.blp b/simplelogin-gui/data/login_window.blp
index fe14482..c2f8327 100644
--- a/simplelogin-gui/data/login_window.blp
+++ b/simplelogin-gui/data/login_window.blp
@@ -117,9 +117,6 @@ template $LoginWindow : ApplicationWindow {
             receives-default: true;
             truncate-multiline: true;
 
-            styles [
-            ]
-
             layout {
               column: "1";
               row: "1";
diff --git a/simplelogin-gui/src/application.rs b/simplelogin-gui/src/application.rs
index 4fe0b7d..769c5d8 100644
--- a/simplelogin-gui/src/application.rs
+++ b/simplelogin-gui/src/application.rs
@@ -1,20 +1,34 @@
 use crate::login_window::LoginWindow;
 
 use gtk4 as gtk;
-use gtk::{glib, gio, prelude::*, subclass::prelude::*};
+use gtk::{glib, gdk, gio, prelude::*, subclass::prelude::*};
 
 mod imp {
     use super::*;
+    use std::cell::RefCell;
     
-    #[derive(Debug)]
+    #[derive(Debug, glib::Properties)]
+    #[properties(wrapper_type = super::Application)]
     pub struct Application {
-        pub settings: gio::Settings,
+        #[property(name = "api-key", type = Option<String>,
+            get = Self::api_key, set = Self::set_api_key, nullable)]
+        pub settings: RefCell<gio::Settings>,
+    }
+
+    impl Application {
+        fn api_key(&self) -> Option<String> {
+            self.settings.borrow().value("api-key").get()
+        }
+
+        fn set_api_key(&self, value: Option<String>) {
+            _ = self.settings.borrow().set("api-key", value).unwrap();
+        }
     }
 
     impl Default for Application {
         fn default() -> Self {
             Self {
-                settings: gio::Settings::new(crate::APP_ID)
+                settings: RefCell::new(gio::Settings::new(crate::APP_ID)),
             }
         }
     }
@@ -28,11 +42,22 @@ mod imp {
 
     impl ApplicationImpl for Application {
         fn activate(&self) {
-            let login_window = LoginWindow::new(&self.obj());
-            login_window.present();
+        let css = gtk::CssProvider::new();
+        gtk::style_context_add_provider_for_display(
+            &gdk::Display::default().unwrap(),
+            &css, gtk::STYLE_PROVIDER_PRIORITY_APPLICATION
+        );
+        css.load_from_string(include_str!("../data/global.css"));
+            if self.api_key().is_none() {
+                let login_window = LoginWindow::new(&self.obj());
+                login_window.present();
+            } else {
+                todo!();
+            }
         }
     }
 
+    #[glib::derived_properties]
     impl ObjectImpl for Application {}
     impl GtkApplicationImpl for Application {}
 }
diff --git a/simplelogin-gui/src/main.rs b/simplelogin-gui/src/main.rs
index 90adb39..4b5ad30 100644
--- a/simplelogin-gui/src/main.rs
+++ b/simplelogin-gui/src/main.rs
@@ -4,15 +4,16 @@ mod application;
 
 use gtk4 as gtk;
 use gtk::prelude::*;
-use gtk::glib::{self, g_message};
+use gtk::glib::{self, g_info};
 
 const APP_ID: &str = "im.zander.SimpleLogin";
 
 fn main() -> glib::ExitCode {
-    if cfg!(debug_assertions) {
+    #[cfg(debug_assertions)] {
+        std::env::set_var("G_MESSAGES_DEBUG", "SimpleLogin");
         // allow us to use a test schema for debug runs
         let schema_dir = concat!(env!("OUT_DIR"), "/schemas/");
-        g_message!("SimpleLogin", "Using schema dir: \"{}\"", schema_dir);
+        g_info!("SimpleLogin", "Using schema dir: \"{}\"", schema_dir);
         std::env::set_var("GSETTINGS_SCHEMA_DIR", schema_dir);
     }
     let app = application::Application::new(APP_ID);