diff --git a/src/main-window.ui b/src/main-window.ui
index 328e34f..9769c0f 100644
--- a/src/main-window.ui
+++ b/src/main-window.ui
@@ -72,10 +72,21 @@
               </object>
             </child>
 
-            <!-- 3-Column Layout: Sidebar | Request | Response -->
+            <!-- Vertical Paned: Main Content | History Panel -->
             <child>
-              <object class="GtkPaned" id="main_pane">
+              <object class="GtkPaned" id="vertical_pane">
+                <property name="orientation">vertical</property>
                 <property name="vexpand">True</property>
+                <property name="position">600</property>
+                <property name="shrink-start-child">False</property>
+                <property name="shrink-end-child">True</property>
+                <property name="resize-start-child">True</property>
+                <property name="resize-end-child">True</property>
+
+                <!-- START: Main Content Area -->
+                <property name="start-child">
+                  <!-- 3-Column Layout: Sidebar | Request | Response -->
+                  <object class="GtkPaned" id="main_pane">
                 <property name="orientation">horizontal</property>
                 <property name="position">250</property>
                 <property name="shrink-start-child">False</property>
@@ -220,15 +231,6 @@
                                 <property name="hexpand">True</property>
                               </object>
                             </child>
-
-                            <!-- History Toggle Button -->
-                            <child>
-                              <object class="GtkToggleButton" id="history_toggle_button">
-                                <property name="icon-name">view-list-symbolic</property>
-                                <property name="tooltip-text">Toggle History Panel</property>
-                                <signal name="toggled" handler="on_history_toggle_button_toggled"/>
-                              </object>
-                            </child>
                           </object>
                         </child>
                       </object>
@@ -236,18 +238,12 @@
                   </object>
                 </property>
               </object>
-            </child>
+                </property>
 
-            <!-- History Panel (Collapsible) -->
-            <child>
-              <object class="GtkRevealer" id="history_revealer">
-                <property name="reveal-child">False</property>
-                <property name="transition-type">slide-up</property>
-
-                <child>
+                <!-- END: History Panel -->
+                <property name="end-child">
                   <object class="GtkBox">
                     <property name="orientation">vertical</property>
-                    <property name="height-request">200</property>
 
                     <!-- History Header -->
                     <child>
@@ -268,14 +264,6 @@
                             </style>
                           </object>
                         </child>
-
-                        <child>
-                          <object class="GtkButton" id="hide_history_button">
-                            <property name="icon-name">go-down-symbolic</property>
-                            <property name="tooltip-text">Hide history</property>
-                            <signal name="clicked" handler="on_toggle_history"/>
-                          </object>
-                        </child>
                       </object>
                     </child>
 
@@ -283,6 +271,7 @@
                     <child>
                       <object class="GtkScrolledWindow">
                         <property name="vexpand">True</property>
+                        <property name="min-content-height">150</property>
 
                         <child>
                           <object class="GtkListBox" id="history_listbox">
@@ -294,7 +283,7 @@
                       </object>
                     </child>
                   </object>
-                </child>
+                </property>
               </object>
             </child>
           </object>
@@ -304,12 +293,6 @@
   </template>
 
   <menu id="primary_menu">
-    <section>
-      <item>
-        <attribute name="label" translatable="yes">Toggle History</attribute>
-        <attribute name="action">win.toggle-history</attribute>
-      </item>
-    </section>
     <section>
       <item>
         <attribute name="label" translatable="yes">_Preferences</attribute>
diff --git a/src/window.py b/src/window.py
index 97d8a34..cf14ad1 100644
--- a/src/window.py
+++ b/src/window.py
@@ -55,12 +55,9 @@ class RosterWindow(Adw.ApplicationWindow):
     # Status bar
     status_label = Gtk.Template.Child()
     time_label = Gtk.Template.Child()
-    history_toggle_button = Gtk.Template.Child()
 
     # History
-    history_revealer = Gtk.Template.Child()
     history_listbox = Gtk.Template.Child()
-    hide_history_button = Gtk.Template.Child()
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
@@ -100,9 +97,7 @@ class RosterWindow(Adw.ApplicationWindow):
 
     def _create_actions(self):
         """Create window-level actions."""
-        action = Gio.SimpleAction.new("toggle-history", None)
-        action.connect("activate", self.on_toggle_history)
-        self.add_action(action)
+        pass
 
     def _setup_method_dropdown(self):
         """Populate HTTP method dropdown."""
@@ -409,33 +404,6 @@ class RosterWindow(Adw.ApplicationWindow):
 
         self._show_toast("Request loaded from history")
 
-    @Gtk.Template.Callback()
-    def on_toggle_history(self, *args):
-        """Toggle history panel visibility (from menu)."""
-        current = self.history_revealer.get_reveal_child()
-        self.history_revealer.set_reveal_child(not current)
-
-        # Update toggle button state
-        self.history_toggle_button.set_active(not current)
-
-        # Update hide button icon
-        if not current:
-            self.hide_history_button.set_icon_name("go-down-symbolic")
-        else:
-            self.hide_history_button.set_icon_name("go-up-symbolic")
-
-    @Gtk.Template.Callback()
-    def on_history_toggle_button_toggled(self, button):
-        """Toggle history panel from bottom button."""
-        active = button.get_active()
-        self.history_revealer.set_reveal_child(active)
-
-        # Update hide button icon
-        if active:
-            self.hide_history_button.set_icon_name("go-down-symbolic")
-        else:
-            self.hide_history_button.set_icon_name("go-up-symbolic")
-
     def _show_toast(self, message):
         """Show a toast notification."""
         toast = Adw.Toast()