diff --git a/core/overlay_window.py b/core/overlay_window.py
index 97c182f..7820b1c 100644
--- a/core/overlay_window.py
+++ b/core/overlay_window.py
@@ -557,9 +557,11 @@ class OverlayWindow(QMainWindow):
             # Get icon name
             icon_name = get_plugin_icon_name(plugin.name)
             
-            # Create sidebar button
+            # Create sidebar button with proper callback capture
             btn = SidebarButton(plugin.name, icon_name, self.icon_manager)
-            btn.clicked.connect(lambda i=idx: self._on_plugin_selected(i))
+            # Use functools.partial to properly capture idx by value
+            from functools import partial
+            btn.clicked.connect(partial(self._on_plugin_selected, idx))
             
             # Insert before stretch
             self.sidebar_buttons_layout.insertWidget(idx, btn)
diff --git a/plugins/dashboard/plugin.py b/plugins/dashboard/plugin.py
index d514940..b8f8a88 100644
--- a/plugins/dashboard/plugin.py
+++ b/plugins/dashboard/plugin.py
@@ -159,7 +159,7 @@ class DashboardPlugin(BasePlugin):
             QPushButton {{
                 background-color: {EU_COLORS['bg_secondary']};
                 color: {EU_COLORS['text_secondary']};
-                border: 1px solid {EU_COLORS['border_subtle']};
+                border: 1px solid {EU_COLORS['border_default']};
                 border-radius: 4px;
                 padding: 8px 16px;
             }}
@@ -223,7 +223,7 @@ class DashboardPlugin(BasePlugin):
         card.setStyleSheet(f"""
             QFrame {{
                 background-color: {EU_COLORS['bg_secondary']};
-                border: 1px solid {EU_COLORS['border_subtle']};
+                border: 1px solid {EU_COLORS['border_default']};
                 border-radius: 8px;
             }}
         """)
@@ -287,7 +287,7 @@ class DashboardPlugin(BasePlugin):
             QListWidget {{
                 background-color: {EU_COLORS['bg_secondary']};
                 color: white;
-                border: 1px solid {EU_COLORS['border_subtle']};
+                border: 1px solid {EU_COLORS['border_default']};
             }}
             QListWidget::item {{
                 padding: 10px;