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Co-authored-by: Copilot <copilot@github.com>

app/static/css/styles.css

@@ -300,6 +300,24 @@ body {
     z-index: 4;
 }
 
+.layer-foreground {
+    z-index: 5;
+    pointer-events: none; /* Allow clicks to pass through to controls below */
+}
+
+/* Layer transform modifiers */
+.layer-flip-horizontal {
+    transform: scaleX(-1);
+}
+
+.layer-flip-vertical {
+    transform: scaleY(-1);
+}
+
+.layer-flip-both {
+    transform: scale(-1, -1);
+}
+
 .config-preview-notice {
     position: absolute;
     bottom: 10px;