diff --git a/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt b/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt
index 5b44941..1e57d40 100644
--- a/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt
+++ b/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt
@@ -257,7 +257,10 @@ fun PlacementGuideView(appState: AppState) {
                 modifier = Modifier
                     .fillMaxWidth()
                     .heightIn(min = 96.dp)   // 1.5× of current ~64dp natural height
-                    .background(hint1Bg.copy(alpha = 0.7f), RoundedCornerShape(16.dp))
+                    .background(
+                        if (waitingForStart) hint1Bg.copy(alpha = 0.7f) else Color.Transparent,
+                        RoundedCornerShape(16.dp)
+                    )
                     .padding(horizontal = 20.dp, vertical = 14.dp),
                 contentAlignment = Alignment.Center
             ) {
@@ -541,7 +544,10 @@ fun PlacementGuideView(appState: AppState) {
                 modifier = Modifier
                     .fillMaxWidth()
                     .heightIn(min = 102.dp)   // 1.5× of current ~68dp natural height
-                    .background(hintBg.copy(alpha = 0.7f), RoundedCornerShape(16.dp))
+                    .background(
+                        if (hint2Visible) hintBg.copy(alpha = 0.7f) else Color.Transparent,
+                        RoundedCornerShape(16.dp)
+                    )
                     .padding(horizontal = 20.dp, vertical = 14.dp),
                 contentAlignment = Alignment.Center
             ) {