diff --git a/src/ui/widgets.rs b/src/ui/widgets.rs
index 06a2cd8..0e910fc 100644
--- a/src/ui/widgets.rs
+++ b/src/ui/widgets.rs
@@ -209,18 +209,6 @@ pub fn show_crash_dialog(
         .map(|c| c.to_string())
         .unwrap_or_else(|| "unknown".to_string());
 
-    let body = format!("{}\n\nExit code: {}", explanation, exit_str);
-
-    let dialog = adw::AlertDialog::builder()
-        .heading(&format!("{} failed to start", app_name))
-        .body(&body)
-        .close_response("close")
-        .default_response("close")
-        .prefer_wide_layout(true)
-        .build();
-    dialog.set_content_width(700);
-    dialog.set_content_height(500);
-
     // Build the full text that gets copied
     let full_error = format!(
         "App: {}\nExit code: {}\n\n{}\n\nError output:\n{}",
@@ -230,19 +218,42 @@ pub fn show_crash_dialog(
         stderr.trim(),
     );
 
-    // Extra content: scrollable text view with full stderr + copy button
-    if !stderr.trim().is_empty() {
-        let vbox = gtk::Box::builder()
-            .orientation(gtk::Orientation::Vertical)
-            .spacing(8)
-            .build();
+    // Use adw::Dialog (not AlertDialog) for full size control
+    let dialog = adw::Dialog::builder()
+        .title(&format!("{} failed to start", app_name))
+        .content_width(900)
+        .content_height(550)
+        .build();
 
+    let toolbar = adw::ToolbarView::new();
+    let header = adw::HeaderBar::new();
+    toolbar.add_top_bar(&header);
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(16)
+        .margin_bottom(16)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Explanation
+    let explanation_label = gtk::Label::builder()
+        .label(&format!("{}\n\nExit code: {}", explanation, exit_str))
+        .wrap(true)
+        .xalign(0.0)
+        .build();
+    content.append(&explanation_label);
+
+    // Error output
+    if !stderr.trim().is_empty() {
         let heading = gtk::Label::builder()
             .label("Error output:")
             .xalign(0.0)
             .build();
         heading.add_css_class("heading");
-        vbox.append(&heading);
+        content.append(&heading);
 
         let text_view = gtk::TextView::builder()
             .editable(false)
@@ -259,11 +270,9 @@ pub fn show_crash_dialog(
 
         let scrolled = gtk::ScrolledWindow::builder()
             .child(&text_view)
-            .min_content_height(250)
-            .max_content_height(500)
             .vexpand(true)
             .build();
-        vbox.append(&scrolled);
+        content.append(&scrolled);
 
         let copy_btn = gtk::Button::builder()
             .label("Copy to clipboard")
@@ -277,12 +286,11 @@ pub fn show_crash_dialog(
             btn.set_label("Copied!");
             btn.set_sensitive(false);
         });
-        vbox.append(&copy_btn);
-
-        dialog.set_extra_child(Some(&vbox));
+        content.append(&copy_btn);
     }
 
-    dialog.add_response("close", "Close");
+    toolbar.set_content(Some(&content));
+    dialog.set_child(Some(&toolbar));
     dialog.present(Some(parent));
 }