diff --git a/index.html b/index.html
index d4cb768..b133958 100644
--- a/index.html
+++ b/index.html
@@ -38,11 +38,65 @@
         <main class="main-content">
             <div class="panel">
                 <div class="panel-header">
-                    <div class="panel-icon">🚀</div>
-                    <h2 class="panel-title">Project Content</h2>
+                    <div class="panel-icon">⚡</div>
+                    <h2 class="panel-title">Start Performance Test</h2>
+                </div>
+
+                <!-- Test Launcher Form -->
+                <div class="launcher-form">
+                    <div class="form-group">
+                        <label class="form-label" for="test-url">Enter Website URL</label>
+                        <input type="url" id="test-url" class="form-input" placeholder="https://example.com" required>
+                    </div>
+
+                    <div class="form-row">
+                        <div class="form-group">
+                            <label class="form-label">Device Emulation</label>
+                            <div class="toggle-group">
+                                <div class="toggle-option active" data-value="mobile" onclick="setDevice('mobile')">
+                                    📱 Mobile
+                                </div>
+                                <div class="toggle-option" data-value="desktop" onclick="setDevice('desktop')">
+                                    💻 Desktop
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+
+                    <button id="run-btn" class="btn-primary" onclick="runTest()">
+                        <span>Run Test</span>
+                        <div id="loading-spinner" class="loading-spinner" style="display: none;"></div>
+                    </button>
+                    <p id="error-msg" style="color: var(--color-accent-danger); display: none;"></p>
+                </div>
+
+                <!-- Live Results -->
+                <div id="results-area" class="results-container">
+                    <h3>Latest Results</h3>
+                    <div class="metrics-grid">
+                        <div class="metric-card">
+                            <div class="metric-value" id="score-perf">-</div>
+                            <div class="metric-label">Performance</div>
+                        </div>
+                        <div class="metric-card">
+                            <div class="metric-value" id="metric-lcp">-</div>
+                            <div class="metric-label">LCP (ms)</div>
+                        </div>
+                        <div class="metric-card">
+                            <div class="metric-value" id="metric-cls">-</div>
+                            <div class="metric-label">CLS</div>
+                        </div>
+                        <div class="metric-card">
+                            <div class="metric-value" id="metric-tbt">-</div>
+                            <div class="metric-label">TBT (ms)</div>
+                        </div>
+                    </div>
+                </div>
+
+                <!-- History -->
+                <div class="history-list" id="history-list">
+                    <!-- History items will be populated here -->
                 </div>
-                <p>This is the base template. Add your project content here.</p>
-            </div>
         </main>
 
         <!-- Footer -->
diff --git a/lib/runner.js b/lib/runner.js
index 0034609..e3500ab 100644
--- a/lib/runner.js
+++ b/lib/runner.js
@@ -20,7 +20,11 @@ async function runTest(url, options = {}) {
   }
 
   // Launch Chrome
-  const chrome = await chromeLauncher.launch({ chromeFlags: ['--headless'] });
+  const chromePath = require('puppeteer').executablePath();
+  const chrome = await chromeLauncher.launch({ 
+    chromePath, 
+    chromeFlags: ['--headless', '--no-sandbox', '--disable-gpu', '--disable-dev-shm-usage'] 
+  });
   
   // Lighthouse Config
   const port = chrome.port;
diff --git a/script.js b/script.js
index 81eaaa1..bb001a2 100644
--- a/script.js
+++ b/script.js
@@ -1,5 +1,179 @@
 // ============================================================================
-// Git Version Badge - Auto-update from server
+// State & Config
+// ============================================================================
+let currentDevice = 'mobile';
+
+// ============================================================================
+// UI Functions
+// ============================================================================
+
+function setDevice(device) {
+    currentDevice = device;
+    document.querySelectorAll('.toggle-option').forEach(el => {
+        el.classList.toggle('active', el.dataset.value === device);
+    });
+}
+
+function setLoading(isLoading) {
+    const btn = document.getElementById('run-btn');
+    const spinner = document.getElementById('loading-spinner');
+    const btnText = btn.querySelector('span');
+    
+    if (isLoading) {
+        btn.disabled = true;
+        spinner.style.display = 'block';
+        btnText.textContent = 'Running Test...';
+    } else {
+        btn.disabled = false;
+        spinner.style.display = 'none';
+        btnText.textContent = 'Run Test';
+    }
+}
+
+// ============================================================================
+// API Handlers
+// ============================================================================
+
+async function runTest() {
+    const urlInput = document.getElementById('test-url');
+    const url = urlInput.value.trim();
+    const errorMsg = document.getElementById('error-msg');
+    const resultsArea = document.getElementById('results-area');
+
+    if (!url) {
+        showError('Please enter a valid URL');
+        return;
+    }
+
+    try {
+        new URL(url);
+    } catch {
+        showError('Invalid URL format (include http:// or https://)');
+        return;
+    }
+
+    // Reset UI
+    errorMsg.style.display = 'none';
+    resultsArea.classList.remove('visible');
+    setLoading(true);
+
+    try {
+        const response = await fetch('/api/run-test', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({ 
+                url: url,
+                isMobile: currentDevice === 'mobile'
+            })
+        });
+
+        if (!response.ok) throw new Error('Test failed to start');
+
+        const data = await response.json();
+        displayResults(data);
+        loadHistory(); // Refresh history
+
+    } catch (error) {
+        console.error(error);
+        showError('Test execution failed. Check console for details.');
+    } finally {
+        setLoading(false);
+    }
+}
+
+function displayResults(data) {
+    const resultsArea = document.getElementById('results-area');
+    
+    // Update Metrics
+    updateMetric('score-perf', Math.round(data.scores.performance), true);
+    updateMetric('metric-lcp', Math.round(data.metrics.lcp));
+    updateMetric('metric-cls', data.metrics.cls.toFixed(3));
+    updateMetric('metric-tbt', Math.round(data.metrics.tbt));
+
+    // Remove existing actions if any
+    const existingActions = resultsArea.querySelector('.report-actions');
+    if (existingActions) existingActions.remove();
+
+    // Add Report Button
+    const actionsDiv = document.createElement('div');
+    actionsDiv.className = 'report-actions';
+    actionsDiv.innerHTML = `
+        <a href="/reports/${data.id}.html" target="_blank" class="btn-secondary">
+            📄 View Full Report
+        </a>
+    `;
+    resultsArea.appendChild(actionsDiv);
+
+    resultsArea.classList.add('visible');
+    
+    // Scroll to results
+    resultsArea.scrollIntoView({ behavior: 'smooth' });
+}
+
+function updateMetric(id, value, isScore = false) {
+    const el = document.getElementById(id);
+    el.textContent = value;
+    
+    if (isScore) {
+        el.className = 'metric-value'; // Reset
+        if (value >= 90) el.classList.add('score-good');
+        else if (value >= 50) el.classList.add('score-average');
+        else el.classList.add('score-poor');
+    }
+}
+
+function showError(msg) {
+    const el = document.getElementById('error-msg');
+    el.textContent = msg;
+    el.style.display = 'block';
+}
+
+async function loadHistory() {
+    try {
+        const response = await fetch('/api/history');
+        const history = await response.json();
+        
+        const container = document.getElementById('history-list');
+        container.innerHTML = '<h3>Recent Tests</h3>';
+        
+        if (history.length === 0) {
+            container.innerHTML += '<p style="color: var(--color-text-tertiary)">No tests run yet.</p>';
+            return;
+        }
+
+        history.slice(0, 10).forEach(test => {
+            const date = new Date(test.timestamp).toLocaleString();
+            const perfScore = Math.round(test.scores.performance);
+            const colorClass = perfScore >= 90 ? 'score-good' : (perfScore >= 50 ? 'score-average' : 'score-poor');
+            
+            const html = `
+                <div class="history-item">
+                    <div>
+                        <div style="font-weight: 600; font-size: 0.9rem">${test.url}</div>
+                        <div style="font-size: 0.75rem; color: var(--color-text-muted)">
+                            ${date} • ${test.isMobile ? '📱 Mobile' : '💻 Desktop'}
+                        </div>
+                    </div>
+                    <div style="display: flex; align-items: center; gap: 1rem;">
+                        <a href="/reports/${test.id}.html" target="_blank" class="btn-secondary" style="margin:0; padding: 0.25rem 0.75rem; font-size: 0.75rem;">
+                            View Report
+                        </a>
+                        <div class="${colorClass}" style="font-weight: 700; font-size: 1.25rem">
+                            ${perfScore}
+                        </div>
+                    </div>
+                </div>
+            `;
+            container.innerHTML += html;
+        });
+
+    } catch (error) {
+        console.error('Failed to load history', error);
+    }
+}
+
+// ============================================================================
+// Git Version Badge
 // ============================================================================
 
 async function updateVersionBadge() {
@@ -16,7 +190,6 @@ async function updateVersionBadge() {
         const commitAgeEl = document.getElementById('commit-age');
         
         if (data.error || !data.commitId) {
-            // Fallback - try to get from git locally or show placeholder
             commitIdEl.textContent = 'local';
             commitAgeEl.textContent = 'dev mode';
             commitIdEl.style.color = 'var(--color-text-muted)';
@@ -35,8 +208,11 @@ async function updateVersionBadge() {
     }
 }
 
-// Update version badge on page load
-document.addEventListener('DOMContentLoaded', updateVersionBadge);
-
-// Optional: Auto-refresh every 5 minutes to show latest version
-setInterval(updateVersionBadge, 5 * 60 * 1000);
+// Initialization
+document.addEventListener('DOMContentLoaded', () => {
+    updateVersionBadge();
+    loadHistory();
+    
+    // Auto-refresh Git badge
+    setInterval(updateVersionBadge, 5 * 60 * 1000);
+});
diff --git a/styles.css b/styles.css
index 133190d..1e9f529 100644
--- a/styles.css
+++ b/styles.css
@@ -384,3 +384,217 @@ body::before {
     font-size: 2rem;
   }
 }
+/* ===================================
+   TEST LAUNCHER COMPONENT
+   =================================== */
+.launcher-form {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-lg);
+}
+
+.form-group {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-xs);
+}
+
+.form-label {
+  font-size: 0.875rem;
+  font-weight: 500;
+  color: var(--color-text-secondary);
+}
+
+.form-input {
+  background: rgba(10, 14, 26, 0.6);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  padding: var(--spacing-md);
+  color: var(--color-text-primary);
+  font-family: var(--font-primary);
+  font-size: 1rem;
+  transition: all var(--transition-fast);
+}
+
+.form-input:focus {
+  outline: none;
+  border-color: var(--color-accent-primary);
+  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
+}
+
+.form-input::placeholder {
+  color: var(--color-text-muted);
+}
+
+.form-row {
+  display: flex;
+  gap: var(--spacing-lg);
+  flex-wrap: wrap;
+}
+
+.toggle-group {
+  display: flex;
+  align-items: center;
+  gap: var(--spacing-md);
+  background: rgba(10, 14, 26, 0.4);
+  padding: var(--spacing-xs);
+  border-radius: var(--radius-lg);
+  border: 1px solid var(--color-border);
+}
+
+.toggle-option {
+  padding: var(--spacing-xs) var(--spacing-md);
+  border-radius: var(--radius-md);
+  cursor: pointer;
+  font-size: 0.875rem;
+  font-weight: 500;
+  color: var(--color-text-tertiary);
+  transition: all var(--transition-fast);
+}
+
+.toggle-option.active {
+  background: var(--color-bg-tertiary);
+  color: var(--color-text-primary);
+  box-shadow: var(--shadow-sm);
+}
+
+.btn-primary {
+  background: var(--gradient-primary);
+  color: white;
+  border: none;
+  padding: var(--spacing-md) var(--spacing-xl);
+  border-radius: var(--radius-md);
+  font-size: 1rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all var(--transition-base);
+  box-shadow: var(--shadow-glow);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--spacing-sm);
+}
+
+.btn-primary:hover {
+  transform: translateY(-2px);
+  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.6);
+}
+
+.btn-primary:disabled {
+  opacity: 0.7;
+  cursor: not-allowed;
+  transform: none;
+}
+
+/* Loading State */
+.loading-spinner {
+  width: 1.5rem;
+  height: 1.5rem;
+  border: 3px solid rgba(255, 255, 255, 0.3);
+  border-top-color: white;
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+  to { transform: rotate(360deg); }
+}
+
+/* Results Section */
+.results-container {
+  margin-top: var(--spacing-2xl);
+  display: none; /* Hidden by default */
+}
+
+.results-container.visible {
+  display: block;
+  animation: fadeInDown 0.6s ease-out;
+}
+
+.metrics-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+  gap: var(--spacing-lg);
+  margin-top: var(--spacing-lg);
+}
+
+.metric-card {
+  background: rgba(255, 255, 255, 0.05);
+  padding: var(--spacing-lg);
+  border-radius: var(--radius-lg);
+  border: 1px solid var(--color-border);
+  text-align: center;
+}
+
+.metric-value {
+  font-size: 2.5rem;
+  font-weight: 800;
+  margin-bottom: var(--spacing-xs);
+  background: var(--gradient-primary);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+}
+
+.metric-label {
+  color: var(--color-text-secondary);
+  font-size: 0.875rem;
+}
+
+.score-good { color: var(--color-accent-success); -webkit-text-fill-color: var(--color-accent-success); }
+.score-average { color: var(--color-accent-warning); -webkit-text-fill-color: var(--color-accent-warning); }
+.score-poor { color: var(--color-accent-danger); -webkit-text-fill-color: var(--color-accent-danger); }
+
+/* History List */
+.history-list {
+  margin-top: var(--spacing-xl);
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-sm);
+}
+
+.history-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: var(--spacing-md);
+  background: rgba(255, 255, 255, 0.03);
+  border-radius: var(--radius-md);
+  border: 1px solid transparent;
+  transition: all var(--transition-fast);
+}
+
+.history-item:hover {
+  background: rgba(255, 255, 255, 0.05);
+  border-color: var(--color-border);
+}
+
+.btn-secondary {
+  background: rgba(255, 255, 255, 0.1);
+  color: var(--color-text-primary);
+  border: 1px solid var(--color-border);
+  padding: var(--spacing-sm) var(--spacing-lg);
+  border-radius: var(--radius-md);
+  font-size: 0.875rem;
+  font-weight: 500;
+  cursor: pointer;
+  text-decoration: none;
+  transition: all var(--transition-base);
+  display: inline-flex;
+  align-items: center;
+  gap: var(--spacing-sm);
+  margin-left: var(--spacing-md);
+}
+
+.btn-secondary:hover {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: var(--color-text-secondary);
+  color: white;
+}
+
+.report-actions {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  margin-top: var(--spacing-lg);
+  gap: var(--spacing-md);
+}