diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index 38e862d..29396a9 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -398,6 +398,12 @@ void MainWindow::buildUi()
 
   m_splitter->addWidget(m_rightSidebar);
 
+  QFrame* hSeparator = new QFrame();
+  hSeparator->setFrameShape(QFrame::HLine);
+  hSeparator->setFrameShadow(QFrame::Plain);
+  hSeparator->setStyleSheet("color: rgba(128, 128, 128, 0.3);");
+  hSeparator->setFixedHeight(1);
+  mainLayout->addWidget(hSeparator);
   // ── Network detail widget (hidden by default) ──
 
   m_statusBar = new QStatusBar();