Invert parallax and keep background aspect

wwwroot/app.js

@@ -841,8 +841,9 @@ function setupBackgroundPan(config = {}) {
     const root = document.documentElement;
     const maxOffset = config.maxOffsetPx ?? 30;
     const ease = config.ease ?? 0.08;
-    if (config.scalePercent) {
-        root.style.setProperty("--bg-scale", config.scalePercent);
+    const scaleFactor = config.scaleFactor ?? 1.12;
+    if (scaleFactor) {
+        root.style.setProperty("--bg-scale", scaleFactor);
     }
     let targetX = 0;
     let targetY = 0;
@@ -865,7 +866,7 @@ function setupBackgroundPan(config = {}) {
     window.addEventListener("mousemove", (e) => {
         const nx = (e.clientX / window.innerWidth - 0.5) * 2;
         const ny = (e.clientY / window.innerHeight - 0.5) * 2;
-        setTarget(nx * maxOffset, ny * maxOffset);
+        setTarget(-nx * maxOffset, -ny * maxOffset);
     });
 
     window.addEventListener("mouseleave", () => setTarget(0, 0));
@@ -934,7 +935,7 @@ function scoreToEmoji(score) {
 }
 
 function neutralEmoji() {
-    return "😐";
+    return "⬅️";
 }
 
 function signatureSuggestions(list) {