Switch to local-build tailwindcss instead CDN

.gitignore

@@ -28,4 +28,9 @@ go.work.sum
 fail2ban-ui-settings.json
 _dev
 fail2ban-ui.db*
-.DS_Store
+.DS_Store
+
+# Node.js / Tailwind CSS build
+node_modules/
+package-lock.json
+.tailwind-build/

Dockerfile

@@ -42,6 +42,8 @@ COPY --from=builder /app/fail2ban-ui /app/fail2ban-ui
 RUN chown fail2ban:0 /app/fail2ban-ui && chmod +x /app/fail2ban-ui
 COPY --from=builder /app/pkg/web/templates /app/templates
 COPY --from=builder /app/internal/locales /app/locales
+# Copy static files (Tailwind CSS) if they exist
+COPY --from=builder /app/pkg/web/static /app/static
 
 # Set environment variables
 ENV CONTAINER=true

README.md

@@ -55,7 +55,7 @@ Developed by **[Swissmakers GmbH](https://swissmakers.ch)**.
 
 ✅ **Mobile-Friendly & Responsive UI / Fast**
 - Optimized for **mobile & desktop**
-- Powered by **Bootstrap 5**
+- Powered by **Tailwind CSS** (works offline when built locally)
 - **Go-based backend** ensures minimal resource usage
 - Parallel execution for improved performance on remote connections
 
@@ -91,10 +91,24 @@ To install and run directly on the system:
 ```bash
 git clone https://github.com/swissmakers/fail2ban-ui.git /opt/fail2ban-ui
 cd /opt/fail2ban-ui
+
+# Build Tailwind CSS for production (optional but recommended)
+# This requires Node.js and npm to be installed
+./build-tailwind.sh
+
+# Build Go application
 go build -o fail2ban-ui ./cmd/server/main.go
 ...
 ```
 
+**📌 Note on Tailwind CSS:**
+- For **production/offline use**, build Tailwind CSS using `./build-tailwind.sh` before building the application
+- This creates a local CSS file at `pkg/web/static/tailwind.css` that works offline
+- The build script uses **Tailwind CSS v3** (latest v3.x, matches CDN version)
+- If the local file is not found, the application will automatically fall back to the CDN (requires internet connection)
+- The build script requires **Node.js** and **npm** to be installed
+- The script works for both fresh installations and existing development environments
+
 ---
 
 ### **🔹 Method 2: Running as a Container**

build-tailwind.sh

@@ -0,0 +1,97 @@
+#!/bin/bash
+# Build script for Tailwind CSS v3
+# This script builds Tailwind CSS for production use
+# Always installs latest Tailwind CSS v3 (matches CDN version)
+
+set -e
+
+echo "Building Tailwind CSS v3 for Fail2ban-UI..."
+
+# Check if Node.js and npm are installed
+if ! command -v node &> /dev/null; then
+    echo "Error: Node.js is not installed. Please install Node.js first."
+    echo "Visit: https://nodejs.org/"
+    exit 1
+fi
+
+if ! command -v npm &> /dev/null; then
+    echo "Error: npm is not installed. Please install npm first."
+    exit 1
+fi
+
+# Create directories if they don't exist
+mkdir -p pkg/web/static
+mkdir -p .tailwind-build
+
+# Initialize package.json if it doesn't exist
+if [ ! -f package.json ]; then
+    echo "Initializing npm package..."
+    npm init -y --silent
+fi
+
+# Install latest Tailwind CSS v3
+echo "Installing latest Tailwind CSS v3..."
+npm install -D tailwindcss@^3 --silent
+
+# Verify the CLI binary exists
+if [ ! -f "node_modules/.bin/tailwindcss" ] && [ ! -f "node_modules/tailwindcss/lib/cli.js" ]; then
+    echo "❌ Error: Tailwind CSS CLI not found after installation."
+    exit 1
+fi
+
+# Show installed version
+INSTALLED_VERSION=$(npm list tailwindcss 2>/dev/null | grep "tailwindcss@" | head -1 | awk '{print $2}' || echo "unknown")
+echo "Installed: $INSTALLED_VERSION"
+
+# Create tailwind.config.js if it doesn't exist
+if [ ! -f tailwind.config.js ]; then
+    echo "Creating Tailwind CSS configuration..."
+    cat > tailwind.config.js << 'EOF'
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    "./pkg/web/templates/**/*.html",
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}
+EOF
+fi
+
+# Create input CSS file if it doesn't exist
+if [ ! -f .tailwind-build/input.css ]; then
+    echo "Creating input CSS file..."
+    cat > .tailwind-build/input.css << 'EOF'
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+EOF
+fi
+
+# Build Tailwind CSS
+echo "Building Tailwind CSS..."
+
+# Try different methods to run the CLI
+if [ -f "node_modules/.bin/tailwindcss" ]; then
+    node_modules/.bin/tailwindcss -i .tailwind-build/input.css -o pkg/web/static/tailwind.css --minify
+elif [ -f "node_modules/tailwindcss/lib/cli.js" ]; then
+    node node_modules/tailwindcss/lib/cli.js -i .tailwind-build/input.css -o pkg/web/static/tailwind.css --minify
+elif command -v npx &> /dev/null; then
+    npx --yes tailwindcss -i .tailwind-build/input.css -o pkg/web/static/tailwind.css --minify
+else
+    echo "❌ Error: Could not find Tailwind CSS CLI"
+    exit 1
+fi
+
+# Verify output file was created and is not empty
+if [ ! -f "pkg/web/static/tailwind.css" ] || [ ! -s "pkg/web/static/tailwind.css" ]; then
+    echo "❌ Error: Output file was not created or is empty"
+    exit 1
+fi
+
+echo "✅ Tailwind CSS v3 built successfully!"
+echo "Output: pkg/web/static/tailwind.css"
+echo ""
+echo "The application will now use the local Tailwind CSS file instead of the CDN."

cmd/server/main.go

@@ -64,10 +64,12 @@ func main() {
 		// In container, templates are assumed to be in /app/templates
 		router.LoadHTMLGlob("/app/templates/*")
 		router.Static("/locales", "/app/locales")
+		router.Static("/static", "/app/static")
 	} else {
 		// When running locally, load templates from pkg/web/templates
 		router.LoadHTMLGlob("pkg/web/templates/*")
 		router.Static("/locales", "./internal/locales")
+		router.Static("/static", "./pkg/web/static")
 	}
 
 	// Register all application routes, including the static files and templates.

package.json

@@ -0,0 +1,23 @@
+{
+  "name": "fail2ban-ui",
+  "version": "1.0.0",
+  "description": "🚀 **Fail2Ban-UI** is a Swiss-made **web-based management interface** for [Fail2Ban](https://www.fail2ban.org/). It provides an intuitive dashboard to **monitor, configure, and manage Fail2Ban** instances in real time, supporting both local and remote Fail2ban servers.",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/swissmakers/fail2ban-ui.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/swissmakers/fail2ban-ui/issues"
+  },
+  "homepage": "https://github.com/swissmakers/fail2ban-ui#readme",
+  "devDependencies": {
+    "tailwindcss": "^3.4.18"
+  }
+}

pkg/web/templates/index.html

@@ -22,8 +22,14 @@
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
   <title data-i18n="page.title">Fail2ban UI Dashboard</title>
-  <!-- Tailwind CSS -->
-  <script src="https://cdn.tailwindcss.com"></script>
+  <!-- Tailwind CSS - Try local first, fallback to CDN for development -->
+  <link rel="stylesheet" href="/static/tailwind.css" onerror="
+    console.warn('Local Tailwind CSS not found, using CDN. For production, build Tailwind CSS. See README.md for instructions.');
+    var script = document.createElement('script');
+    script.src = 'https://cdn.tailwindcss.com';
+    document.head.appendChild(script);
+    this.onerror = null;
+  ">
   <!-- Font Awesome for icons -->
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
   <!-- Select2 CSS -->
@@ -655,14 +661,14 @@
   <!-- ******************************************************************* -->
   <!-- Jail Config Modal -->
   <div id="jailConfigModal" class="hidden fixed inset-0 overflow-y-auto" style="z-index: 60;">
-    <div class="flex items-center justify-center min-h-screen pt-4 px-4 pb-20 text-center sm:block sm:p-0">
+    <div class="flex items-center justify-center min-h-screen pt-4 px-2 sm:px-4 pb-20 text-center">
       <div class="fixed inset-0 transition-opacity" aria-hidden="true">
         <div class="absolute inset-0 bg-gray-500 opacity-75"></div>
       </div>
       
       <span class="hidden sm:inline-block sm:align-middle sm:h-screen" aria-hidden="true">&#8203;</span>
       
-      <div class="inline-block align-bottom bg-white rounded-lg text-left overflow-hidden shadow-xl transform transition-all sm:my-8 sm:align-middle sm:max-w-4xl sm:w-full">
+      <div class="relative inline-block align-bottom bg-white rounded-lg text-left overflow-hidden shadow-xl transform transition-all my-4 sm:my-8 align-middle w-full max-w-full" style="max-width: 90vw;">
         <div class="bg-white px-4 pt-5 pb-4 sm:p-6 sm:pb-4">
           <div class="sm:flex sm:items-start">
             <div class="mt-3 text-center sm:mt-0 sm:ml-4 sm:text-left w-full">
@@ -670,7 +676,26 @@
                 <span data-i18n="modal.filter_config">Filter Config:</span> <span id="modalJailName"></span>
               </h3>
               <div class="mt-4">
-                <textarea id="jailConfigTextarea" class="w-full border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500 h-96 font-mono text-sm"></textarea>
+                <textarea id="jailConfigTextarea" 
+                  class="w-full border border-gray-700 rounded-md px-4 py-3 focus:outline-none focus:ring-2 focus:ring-green-500 focus:border-green-500 h-96 font-mono text-sm bg-gray-900 text-green-400 resize-none overflow-auto"
+                  spellcheck="false"
+                  autocomplete="off"
+                  autocorrect="off"
+                  autocapitalize="off"
+                  data-lpignore="true"
+                  data-1p-ignore="true"
+                  data-bwignore="true"
+                  data-form-type="other"
+                  data-extension-ignore="true"
+                  data-icloud-keychain-ignore="true"
+                  data-safari-autofill="false"
+                  role="textbox"
+                  aria-label="Filter configuration editor"
+                  name="filter-config-editor"
+                  inputmode="text"
+                  style="caret-color: #4ade80; line-height: 1.5; tab-size: 2; width: 100%; min-width: 100%; max-width: 100%; box-sizing: border-box; -webkit-appearance: none; appearance: none;"
+                  wrap="off"
+                  onfocus="preventExtensionInterference(this);"></textarea>
               </div>
             </div>
           </div>
@@ -2512,11 +2537,39 @@
     //*                Filter-mod and config-mod actions :              *
     //*******************************************************************
 
+    // Prevent browser extensions (like iCloud Passwords) from interfering
+    function preventExtensionInterference(element) {
+      if (!element) return;
+      try {
+        // Ensure control property exists to prevent "Cannot read properties of undefined" errors
+        if (!element.control) {
+          Object.defineProperty(element, 'control', {
+            value: {
+              type: element.type || 'textarea',
+              name: element.name || 'filter-config-editor',
+              form: null,
+              autocomplete: 'off'
+            },
+            writable: false,
+            enumerable: false,
+            configurable: true
+          });
+        }
+        // Prevent extensions from adding their own properties
+        Object.seal(element.control);
+      } catch (e) {
+        // Silently ignore errors
+      }
+    }
+
     function openJailConfigModal(jailName) {
       currentJailForConfig = jailName;
       var textArea = document.getElementById('jailConfigTextarea');
       textArea.value = '';
 
+      // Prevent browser extensions from interfering
+      preventExtensionInterference(textArea);
+
       document.getElementById('modalJailName').textContent = jailName;
 
       showLoading(true);
@@ -2531,7 +2584,13 @@
             return;
           }
           textArea.value = data.config;
+          // Prevent extension interference before opening modal
+          preventExtensionInterference(textArea);
           openModal('jailConfigModal');
+          // Call again after a short delay to ensure it's set after modal is visible
+          setTimeout(function() {
+            preventExtensionInterference(textArea);
+          }, 100);
         })
         .catch(function(err) {
           showToast("Error: " + err, 'error');

tailwind.config.js

@@ -0,0 +1,10 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    "./pkg/web/templates/**/*.html",
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}