diff --git a/.gitignore b/.gitignore
index 77c630a..a82c3ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 /.idea/*
 dist/*
+/node_modules/*
+/package-lock.json
diff --git a/3-styles/ingeli-std/1-behaviors/style.behavior.css b/3-styles/ingeli-std/1-behaviors/style.behavior.css
new file mode 100644
index 0000000..ec682b1
--- /dev/null
+++ b/3-styles/ingeli-std/1-behaviors/style.behavior.css
@@ -0,0 +1,7 @@
+.istd-sty-fill {
+    width: 100%;
+}
+
+.istd-sty-fill > * {
+    width: 100%;
+}
diff --git a/4-clients/1-demo/client.config.json b/4-clients/1-demo/client.config.json
new file mode 100644
index 0000000..5f2b373
--- /dev/null
+++ b/4-clients/1-demo/client.config.json
@@ -0,0 +1,13 @@
+{
+  "name": "1-demo",
+
+  "csharpRoot": "../../ingeli/ingelistd",
+
+  "applications": [
+    {
+      "name": "WebDemo",
+      "deployPath": "IngeliStdBlazorWebDemo",
+      "variants": ["blank", "ingeli"]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/5-build/build-css.js b/5-build/build-css.js
index 391b989..c469c6d 100644
--- a/5-build/build-css.js
+++ b/5-build/build-css.js
@@ -1,12 +1,6 @@
 import fs from "fs";
 import path from "path";
-
-function stripBOM(str) {
-    if (str.charCodeAt(0) === 0xFEFF) {
-        return str.slice(1);
-    }
-    return str;
-}
+import { stripBOM } from "./utils/fs-utils.js";
 
 const [ , , clientName, variantName ] = process.argv;
 
diff --git a/5-build/deploy-all.js b/5-build/deploy-all.js
new file mode 100644
index 0000000..87aa1fc
--- /dev/null
+++ b/5-build/deploy-all.js
@@ -0,0 +1,107 @@
+import fs from "fs";
+import path from "path";
+import { execSync } from "child_process";
+import { stripBOM } from "./utils/fs-utils.js";
+
+const [, , clientName] = process.argv;
+
+if (!clientName) {
+    console.error("❌ Usage: node deploy-all.js <client>");
+    process.exit(1);
+}
+
+const ROOT = process.cwd();
+
+const CLIENT_DIR = path.join(ROOT, "4-clients", clientName);
+const CONFIG_FILE = path.join(CLIENT_DIR, "client.config.json");
+const VARIANTS_DIR = path.join(CLIENT_DIR, "2-variants");
+
+if (!fs.existsSync(CONFIG_FILE)) {
+    console.error(`❌ Config not found: ${CONFIG_FILE}`);
+    process.exit(1);
+}
+
+const raw = fs.readFileSync(CONFIG_FILE, "utf8");
+const config = JSON.parse(stripBOM(raw));
+
+console.log(`🚀 Deploy ALL for client: ${clientName}`);
+
+// --------------------------------------------------
+// Collect variants + validate existence
+// --------------------------------------------------
+const variantsSet = new Set();
+const invalidVariants = new Set();
+
+for (const app of config.applications) {
+    for (const variant of app.variants) {
+        const variantPath = path.join(VARIANTS_DIR, variant);
+
+        if (!fs.existsSync(variantPath)) {
+            console.error(
+                `❌ Variant "${variant}" declared but not found:\n   ${variantPath}`
+            );
+            invalidVariants.add(variant);
+        } else {
+            variantsSet.add(variant);
+        }
+    }
+}
+
+const validVariants = Array.from(variantsSet);
+
+if (validVariants.length === 0) {
+    console.error("\n🚨 No valid variants to deploy. Aborting.");
+    process.exit(1);
+}
+
+if (invalidVariants.size > 0) {
+    console.warn(
+        `\n⚠️  ${invalidVariants.size} invalid variant(s) will be skipped`
+    );
+}
+
+// ==================================================
+// PHASE 1 — BUILD (once per valid variant)
+// ==================================================
+console.log("\n🔨 Phase 1 — Build variants");
+
+for (const variant of validVariants) {
+    console.log(`\n▶ build variant: ${variant}`);
+    execSync(
+        `node 5-build/build-css.js ${clientName} ${variant}`,
+        { stdio: "inherit" }
+    );
+}
+
+// ==================================================
+// PHASE 2 — DEPLOY (application × variant)
+// ==================================================
+console.log("\n📤 Phase 2 — Deploy");
+
+for (const app of config.applications) {
+    console.log(`\n📦 Application: ${app.name}`);
+
+    for (const variant of app.variants) {
+        if (invalidVariants.has(variant)) {
+            console.warn(`  ⏭️  skipped ${variant} (not found)`);
+            continue;
+        }
+
+        console.log(`  ▶ deploy ${app.name} / ${variant}`);
+        execSync(
+            `node 5-build/deploy.js ${clientName} ${app.name} ${variant}`,
+            { stdio: "inherit" }
+        );
+    }
+}
+
+// --------------------------------------------------
+if (invalidVariants.size > 0) {
+
+    console.error(
+        `❌  Completed with ${invalidVariants.size} invalid variant(s)`
+    );
+}
+else {
+    console.log("\n✅ Deploy ALL completed");
+}
diff --git a/5-build/deploy-one.js b/5-build/deploy-one.js
new file mode 100644
index 0000000..c8e2519
--- /dev/null
+++ b/5-build/deploy-one.js
@@ -0,0 +1,81 @@
+import fs from "fs";
+import path from "path";
+import { stripBOM } from "./utils/fs-utils.js";
+
+const [ , , clientName, appName, variantName ] = process.argv;
+
+if (!clientName || !appName || !variantName) {
+    console.error("❌ Usage: node deploy.js <client> <application> <variant>");
+    process.exit(1);
+}
+
+const ROOT = process.cwd();
+
+const CONFIG_FILE = path.join(
+    ROOT,
+    "4-clients",
+    clientName,
+    "client.config.json"
+);
+
+if (!fs.existsSync(CONFIG_FILE)) {
+    console.error(`❌ Config not found: ${CONFIG_FILE}`);
+    process.exit(1);
+}
+
+const rawConfig = fs.readFileSync(CONFIG_FILE, "utf8");
+const config = JSON.parse(stripBOM(rawConfig));
+
+const app = config.applications.find(a => a.name === appName);
+
+if (!app) {
+    console.error(`❌ Application "${appName}" not found for client "${clientName}"`);
+    process.exit(1);
+}
+
+if (!app.variants.includes(variantName)) {
+    console.error(
+        `❌ Variant "${variantName}" not defined for application "${appName}"`
+    );
+    process.exit(1);
+}
+
+const DIST_DIR = path.join(
+    ROOT,
+    "dist",
+    clientName,
+    variantName
+);
+
+if (!fs.existsSync(DIST_DIR)) {
+    console.error(`❌ Build output not found: ${DIST_DIR}`);
+    process.exit(1);
+}
+
+const TARGET_DIR = path.join(
+    ROOT,
+    config.csharpRoot,
+    app.deployPath,
+    "wwwroot",
+    "themes",
+    variantName
+);
+
+console.log("📤 Deploy");
+console.log(`   Client      : ${clientName}`);
+console.log(`   Application : ${appName}`);
+console.log(`   Variant     : ${variantName}`);
+console.log(`   From        : ${DIST_DIR}`);
+console.log(`   To          : ${TARGET_DIR}`);
+
+fs.mkdirSync(TARGET_DIR, { recursive: true });
+
+for (const file of fs.readdirSync(DIST_DIR)) {
+    const src = path.join(DIST_DIR, file);
+    const dest = path.join(TARGET_DIR, file);
+
+    fs.copyFileSync(src, dest);
+    console.log(`   ✔ ${file}`);
+}
+
+console.log("✅ Deploy finished");
diff --git a/5-build/live-dev.js b/5-build/live-dev.js
new file mode 100644
index 0000000..40878c5
--- /dev/null
+++ b/5-build/live-dev.js
@@ -0,0 +1,51 @@
+import chokidar from "chokidar";
+import { execSync } from "child_process";
+
+const [ , , clientName, appName, variantName ] = process.argv;
+
+if (!clientName || !appName || !variantName) {
+    console.error("❌ Usage: node watch.js <client> <application> <variant>");
+    process.exit(1);
+}
+
+console.log("👀 Watch mode");
+console.log(`   Client      : ${clientName}`);
+console.log(`   Application : ${appName}`);
+console.log(`   Variant     : ${variantName}`);
+
+const WATCH_PATHS = [
+    "2-tokens",
+    "3-styles",
+    `4-clients/${clientName}`
+];
+
+let timeout = null;
+
+function rebuild() {
+    console.log("\n🔄 Change detected");
+
+    try {
+        execSync(
+            `node 5-build/build-css.js ${clientName} ${variantName}`,
+            { stdio: "inherit" }
+        );
+
+        execSync(
+            `node 5-build/deploy.js ${clientName} ${appName} ${variantName}`,
+            { stdio: "inherit" }
+        );
+
+        console.log("✅ Rebuild + deploy done");
+    } catch (err) {
+        console.error("❌ Error during rebuild/deploy");
+    }
+}
+
+const watcher = chokidar.watch(WATCH_PATHS, {
+    ignoreInitial: true
+});
+
+watcher.on("all", () => {
+    clearTimeout(timeout);
+    timeout = setTimeout(rebuild, 100);
+});
diff --git a/5-build/utils/fs-utils.js b/5-build/utils/fs-utils.js
new file mode 100644
index 0000000..0050174
--- /dev/null
+++ b/5-build/utils/fs-utils.js
@@ -0,0 +1,7 @@
+export function stripBOM(str) {
+    if (!str) return str;
+    if (str.charCodeAt(0) === 0xFEFF) {
+        return str.slice(1);
+    }
+    return str;
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 4cd12df..eeed56d 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,12 @@
     "node": ">=20.0.0"
   },
   "scripts": {
-    "build": "node 5-build/build-css.js",
-    "build web demo": "node 5-build/build-css.js 1-demo blank"
+    "build web demo": "node 5-build/build-css.js 1-demo blank",
+    "deploy web demo": "node 5-build/deploy-one.js 1-demo WebDemo blank",
+    "watch web demo": "node 5-build/live-dev.js 1-demo WebDemo blank",
+    "deploy all demo": "node 5-build/deploy-all.js 1-demo"
+  },
+  "devDependencies": {
+    "chokidar": "^3.6.0"
   }
 }
\ No newline at end of file
diff --git a/readme.md b/readme.md
index 6b38904..bf61022 100644
--- a/readme.md
+++ b/readme.md
@@ -34,6 +34,7 @@
 │
 ├── 4-clients/
 │   ├── client-xxx/
+│   │   ├── client.config.json
 │   │   ├── 1-commons/
 │   │   │   └── styles/          Même structure que dans le dossier 3-styles à la racine
 │   │   ├── app-xxx/
@@ -48,9 +49,10 @@
 │   └── client-demo/
 │
 ├── build/
-│   ├── build-tokens.js
 │   ├── build-css.js
-│   └── watch.js
+│   ├── deploy-one.js
+│   ├── deploy-all.js
+│   └── live-dev.js
 │
 ├── dist/                       Fichiers à déployer dans le projet C#
 │   ├── client-xxx/