diff --git a/src/app_security.cpp b/src/app_security.cpp
index aa8a8ee..029d97f 100644
--- a/src/app_security.cpp
+++ b/src/app_security.cpp
@@ -808,8 +808,14 @@ void App::renderLockScreen() {
     ImVec2 cardMin(cardX, cardY);
     ImVec2 cardMax(cardX + cardW, cardY + cardH);
 
-    ImU32 cardBg = ui::material::SurfaceVariant();
-    dl->AddRectFilled(cardMin, cardMax, cardBg, 16.0f);
+    // Match the dialog cards: the same glass panel BeginOverlayDialog draws (renders opaque-dark on
+    // the blur via the sole-consumer fallback), instead of a flat light SurfaceVariant fill.
+    GlassPanelSpec cardGlass;
+    cardGlass.rounding = 16.0f;
+    cardGlass.fillAlpha = 35;
+    cardGlass.borderAlpha = 50;
+    cardGlass.borderWidth = 1.0f;
+    DrawGlassPanel(dl, cardMin, cardMax, cardGlass);
 
     float cy = cardY + 24.0f;