diff --git a/examples/generic.html b/examples/generic.html
index 1a27404..b45ae82 100644
--- a/examples/generic.html
+++ b/examples/generic.html
@@ -33,7 +33,10 @@
         var alertInstance = new y2kAlert(
           "Storage Warning",
           Y2K.TYPE_WARNING,
-          "Disk space is running low."
+          "Disk space is running low.",
+          {
+            closeOnBackdropClick: true
+          }
         );
 
         alertInstance.addEventListener("submit", function (event) {
diff --git a/js/y2k-alert.js b/js/y2k-alert.js
index 97782cc..8c445b2 100644
--- a/js/y2k-alert.js
+++ b/js/y2k-alert.js
@@ -10,7 +10,9 @@
             this.title = title || "Alert";
             this.type = type || Y2K.TYPE_INFO;
             this.message = message || "";
-            this.options = options || {};
+            this.options = Object.assign({
+                closeOnBackdropClick: false
+            }, options || {});
             this.isVisible = false;
             this.inputElement = null;
             this.overlayElement = null;
@@ -101,6 +103,16 @@
                 self.submit();
             });
 
+            this.overlayElement.addEventListener("click", function (event) {
+                if (!self.options.closeOnBackdropClick) {
+                    return;
+                }
+
+                if (event.target === self.overlayElement) {
+                    self.close("backdrop");
+                }
+            });
+
             if (this.inputElement) {
                 this.inputElement.addEventListener("keydown", function (event) {
                     if (event.key === "Enter") {
diff --git a/package.json b/package.json
index a339048..9212698 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,13 @@
   "style": "dist/y2k-alerts.css",
   "scripts": {
     "build": "node scripts/build.js",
+    "watch": "node scripts/watch.js",
     "test": "npm run build"
+  },
+  "devDependencies": {
+    "browser-sync": "^3.0.3",
+    "chokidar": "^3.6.0",
+    "clean-css": "^5.3.3",
+    "terser": "^5.31.2"
   }
 }
diff --git a/scripts/build.js b/scripts/build.js
index 5ad8d9d..d446e49 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -1,5 +1,7 @@
 const fs = require("fs");
 const path = require("path");
+const CleanCSS = require("clean-css");
+const { minify } = require("terser");
 
 const ROOT_DIR = path.resolve(__dirname, "..");
 const DIST_DIR = path.join(ROOT_DIR, "dist");
@@ -20,24 +22,8 @@ function readFiles(folder, files) {
         .join("\n\n");
 }
 
-function minifyCss(css) {
-    return css
-        .replace(/\/\*[\s\S]*?\*\//g, "")
-        .replace(/\s+/g, " ")
-        .replace(/\s*([{}:;,])\s*/g, "$1")
-        .replace(/;}/g, "}")
-        .trim();
-}
-
-function minifyJs(js) {
-    return js
-        .replace(/\/\*[\s\S]*?\*\//g, "")
-        .replace(/^\s*\/\/.*$/gm, "")
-        .replace(/\s+/g, " ")
-        .trim();
-}
-
 function buildCss() {
+    const cssMinifier = new CleanCSS({ level: 2 });
     const baseCss = readFiles(BASE_CSS_DIR, BASE_CSS_FILES);
     const themeFolders = fs
         .readdirSync(THEMES_DIR, { withFileTypes: true })
@@ -57,9 +43,14 @@ function buildCss() {
 
         const distFile = path.join(DIST_DIR, `y2k-alerts-${themeName}.css`);
         const distMinFile = path.join(DIST_DIR, `y2k-alerts-${themeName}.min.css`);
+        const minified = cssMinifier.minify(output);
+
+        if (minified.errors.length > 0) {
+            throw new Error(`CSS minification failed for ${themeName}: ${minified.errors.join(", ")}`);
+        }
 
         fs.writeFileSync(distFile, output, "utf8");
-        fs.writeFileSync(distMinFile, minifyCss(output), "utf8");
+        fs.writeFileSync(distMinFile, minified.styles, "utf8");
     });
 
     const genericFile = path.join(DIST_DIR, "y2k-alerts-generic.css");
@@ -74,20 +65,40 @@ function buildCss() {
     }
 }
 
-function buildJs() {
+async function buildJs() {
     const jsBundle = readFiles(JS_DIR, JS_FILES);
     const distFile = path.join(DIST_DIR, "y2k-alerts.js");
     const distMinFile = path.join(DIST_DIR, "y2k-alerts.min.js");
+    const minified = await minify(jsBundle, {
+        compress: true,
+        mangle: true,
+        format: {
+            comments: false
+        }
+    });
+
+    if (!minified.code) {
+        throw new Error("JS minification failed: terser returned empty output.");
+    }
 
     fs.writeFileSync(distFile, jsBundle, "utf8");
-    fs.writeFileSync(distMinFile, minifyJs(jsBundle), "utf8");
+    fs.writeFileSync(distMinFile, minified.code, "utf8");
 }
 
-function build() {
+async function build() {
     ensureDir(DIST_DIR);
     buildCss();
-    buildJs();
+    await buildJs();
     console.log("Built y2k-alerts assets in dist/");
 }
 
-build();
+if (require.main === module) {
+    build().catch((error) => {
+        console.error(error);
+        process.exit(1);
+    });
+}
+
+module.exports = {
+    build
+};
diff --git a/scripts/watch.js b/scripts/watch.js
new file mode 100644
index 0000000..c581e39
--- /dev/null
+++ b/scripts/watch.js
@@ -0,0 +1,69 @@
+const path = require("path");
+const chokidar = require("chokidar");
+const browserSync = require("browser-sync").create();
+const { build } = require("./build");
+
+const ROOT_DIR = path.resolve(__dirname, "..");
+const SOURCE_GLOBS = [
+    path.join(ROOT_DIR, "css/**/*.css"),
+    path.join(ROOT_DIR, "js/**/*.js")
+];
+const EXAMPLE_GLOBS = [
+    path.join(ROOT_DIR, "examples/**/*.html")
+];
+
+let isBuilding = false;
+let hasPendingBuild = false;
+
+async function queueBuild(trigger) {
+    if (isBuilding) {
+        hasPendingBuild = true;
+        return;
+    }
+
+    isBuilding = true;
+
+    try {
+        await build();
+        console.log(`[watch] Built after ${trigger}`);
+        browserSync.reload();
+    } catch (error) {
+        console.error("[watch] Build failed");
+        console.error(error);
+    } finally {
+        isBuilding = false;
+    }
+
+    if (hasPendingBuild) {
+        hasPendingBuild = false;
+        await queueBuild("queued change");
+    }
+}
+
+async function start() {
+    await build();
+
+    browserSync.init({
+        server: ROOT_DIR,
+        startPath: "examples/generic.html",
+        notify: false,
+        open: false
+    });
+
+    chokidar.watch(SOURCE_GLOBS, { ignoreInitial: true }).on("all", (event, filePath) => {
+        const relativePath = path.relative(ROOT_DIR, filePath);
+        queueBuild(`${event}: ${relativePath}`);
+    });
+
+    chokidar.watch(EXAMPLE_GLOBS, { ignoreInitial: true }).on("all", () => {
+        browserSync.reload();
+    });
+
+    console.log("[watch] Watching css/, js/, and examples/.");
+}
+
+start().catch((error) => {
+    console.error("[watch] Failed to start");
+    console.error(error);
+    process.exit(1);
+});