diff --git a/client-gui/src/gui_app.rs b/client-gui/src/gui_app.rs
index 58c6b01..681179a 100644
--- a/client-gui/src/gui_app.rs
+++ b/client-gui/src/gui_app.rs
@@ -5,7 +5,7 @@ use client_network::{
 };
 use crossbeam_channel::{Receiver, Sender};
 use egui::{
-    Align, CentralPanel, CollapsingHeader, Color32, Context, CornerRadius, Frame, Layout,
+    Align, CentralPanel, CollapsingHeader, Color32, Context, CornerRadius, Frame, Id, Layout,
     ProgressBar, Response, ScrollArea, SidePanel, Stroke, TopBottomPanel, Ui, Vec2,
     ViewportCommand,
 };
@@ -372,8 +372,28 @@ impl eframe::App for P2PClientApp {
         }
 
         if self.show_choose_server_window {
+            let full_rect = ctx.input(|i| i.screen_rect());
+            let modal_size = egui::vec2(400.0, 160.0);
+            let modal_pos = (full_rect.center() - modal_size * 0.5).to_vec2();
+
+            // 1) blocker (background order) — captures input except modal area
+            egui::Area::new(Id::new("modal_blocker_bg"))
+                .order(egui::Order::Background)
+                .show(ctx, |ui| {
+                    let painter = ui.painter();
+                    painter.rect_filled(full_rect, 0.0, egui::Color32::from_black_alpha(160));
+
+                    // create an interactable that covers the full rect so clicks are eaten
+                    // but leave the modal rect uncovered by marking it non-interactive below.
+                    let sense = egui::Sense::click_and_drag();
+                    ui.allocate_exact_size(full_rect.size(), sense);
+                });
             egui::Window::new("Choose the server")
                 .resizable(false)
+                .collapsible(false)
+                .title_bar(true)
+                .anchor(egui::Align2::CENTER_CENTER, egui::Vec2::ZERO)
+                .fixed_size(modal_size)
                 .show(ctx, |ui| {
                     ScrollArea::vertical()
                         .auto_shrink([false; 2])