diff --git a/assets/css/custom.css b/assets/css/custom.css
new file mode 100644
index 0000000..3ca1f5f
--- /dev/null
+++ b/assets/css/custom.css
@@ -0,0 +1,3 @@
+.hero-section {
+    background: linear-gradient(to bottom, #F8F9FA, #E9ECEF);
+}
diff --git a/assets/js/main.js b/assets/js/main.js
new file mode 100644
index 0000000..e69de29
diff --git a/index.php b/index.php
index 7205f3d..873af29 100644
--- a/index.php
+++ b/index.php
@@ -1,150 +1,110 @@
-<?php
-declare(strict_types=1);
-@ini_set('display_errors', '1');
-@error_reporting(E_ALL);
-@date_default_timezone_set('UTC');
-
-$phpVersion = PHP_VERSION;
-$now = date('Y-m-d H:i:s');
-?>
-<!doctype html>
+<!DOCTYPE html>
 <html lang="en">
 <head>
-  <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>New Style</title>
-<?php
-// Read project preview data from environment
-$projectDescription = $_SERVER['PROJECT_DESCRIPTION'] ?? '';
-$projectImageUrl = $_SERVER['PROJECT_IMAGE_URL'] ?? '';
-?>
-<?php if ($projectDescription): ?>
-  <!-- Meta description -->
-  <meta name="description" content='<?= htmlspecialchars($projectDescription) ?>' />
-  <!-- Open Graph meta tags -->
-  <meta property="og:description" content="<?= htmlspecialchars($projectDescription) ?>" />
-  <!-- Twitter meta tags -->
-  <meta property="twitter:description" content="<?= htmlspecialchars($projectDescription) ?>" />
-<?php endif; ?>
-<?php if ($projectImageUrl): ?>
-  <!-- Open Graph image -->
-  <meta property="og:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
-  <!-- Twitter image -->
-  <meta property="twitter:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
-<?php endif; ?>
-  <link rel="preconnect" href="https://fonts.googleapis.com">
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
-  <style>
-    :root {
-      --bg-color-start: #6a11cb;
-      --bg-color-end: #2575fc;
-      --text-color: #ffffff;
-      --card-bg-color: rgba(255, 255, 255, 0.01);
-      --card-border-color: rgba(255, 255, 255, 0.1);
-    }
-    body {
-      margin: 0;
-      font-family: 'Inter', sans-serif;
-      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
-      color: var(--text-color);
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      min-height: 100vh;
-      text-align: center;
-      overflow: hidden;
-      position: relative;
-    }
-    body::before {
-      content: '';
-      position: absolute;
-      top: 0;
-      left: 0;
-      width: 100%;
-      height: 100%;
-      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
-      animation: bg-pan 20s linear infinite;
-      z-index: -1;
-    }
-    @keyframes bg-pan {
-      0% { background-position: 0% 0%; }
-      100% { background-position: 100% 100%; }
-    }
-    main {
-      padding: 2rem;
-    }
-    .card {
-      background: var(--card-bg-color);
-      border: 1px solid var(--card-border-color);
-      border-radius: 16px;
-      padding: 2rem;
-      backdrop-filter: blur(20px);
-      -webkit-backdrop-filter: blur(20px);
-      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
-    }
-    .loader {
-      margin: 1.25rem auto 1.25rem;
-      width: 48px;
-      height: 48px;
-      border: 3px solid rgba(255, 255, 255, 0.25);
-      border-top-color: #fff;
-      border-radius: 50%;
-      animation: spin 1s linear infinite;
-    }
-    @keyframes spin {
-      from { transform: rotate(0deg); }
-      to   { transform: rotate(360deg); }
-    }
-    .hint {
-      opacity: 0.9;
-    }
-    .sr-only {
-      position: absolute;
-      width: 1px; height: 1px;
-      padding: 0; margin: -1px;
-      overflow: hidden;
-      clip: rect(0, 0, 0, 0);
-      white-space: nowrap; border: 0;
-    }
-    h1 {
-      font-size: 3rem;
-      font-weight: 700;
-      margin: 0 0 1rem;
-      letter-spacing: -1px;
-    }
-    p {
-      margin: 0.5rem 0;
-      font-size: 1.1rem;
-    }
-    code {
-      background: rgba(0,0,0,0.2);
-      padding: 2px 6px;
-      border-radius: 4px;
-      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
-    }
-    footer {
-      position: absolute;
-      bottom: 1rem;
-      font-size: 0.8rem;
-      opacity: 0.7;
-    }
-  </style>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>AI CSV Analyzer</title>
+    <meta name="description" content="Upload a CSV and get an AI-powered analysis with a dataset description and chart suggestions.">
+    <meta name="keywords" content="csv analysis, ai data analysis, data visualization, business intelligence, data insights, csv uploader, ai-powered charts, data analytics, data processing, flatlogic generator">
+    <meta property="og:title" content="AI CSV Analyzer">
+    <meta property="og:description" content="Upload a CSV and get an AI-powered analysis with a dataset description and chart suggestions.">
+    <meta property="og:image" content="">
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:image" content="">
+
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
+    <link rel="stylesheet" href="assets/css/custom.css?v=<?php echo time(); ?>">
 </head>
 <body>
-  <main>
-    <div class="card">
-      <h1>Analyzing your requirements and generating your website…</h1>
-      <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
-        <span class="sr-only">Loading…</span>
-      </div>
-      <p class="hint"><?= ($_SERVER['HTTP_HOST'] ?? '') === 'appwizzy.com' ? 'AppWizzy' : 'Flatlogic' ?> AI is collecting your requirements and applying the first changes.</p>
-      <p class="hint">This page will update automatically as the plan is implemented.</p>
-      <p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
-    </div>
-  </main>
-  <footer>
-    Page updated: <?= htmlspecialchars($now) ?> (UTC)
-  </footer>
+
+    <nav class="navbar navbar-expand-lg navbar-light bg-light">
+        <div class="container">
+            <a class="navbar-brand" href="#">AI CSV Analyzer</a>
+        </div>
+    </nav>
+
+    <main class="container">
+        <div class="hero-section text-center p-5 rounded-lg my-4">
+            <h1 class="display-4">Analyze Your CSV Data with AI</h1>
+            <p class="lead">Upload your CSV file, and our AI will provide a description of the dataset and suggest relevant charts.</p>
+            
+            <form action="index.php" method="post" enctype="multipart/form-data" class="mt-4">
+                <div class="input-group mb-3">
+                    <input type="file" class="form-control" name="csv_file" id="csv_file" accept=".csv" required>
+                    <button class="btn btn-primary" type="submit">Analyze CSV</button>
+                </div>
+            </form>
+
+            <?php
+            $analysis_result = '';
+            if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['csv_file'])) {
+                if ($_FILES['csv_file']['error'] === UPLOAD_ERR_OK) {
+                    $file_tmp_path = $_FILES['csv_file']['tmp_name'];
+                    $file_name = htmlspecialchars($_FILES['csv_file']['name']);
+                    
+                    // --- CSV Processing ---
+                    $csv_data = [];
+                    $row_limit = 6; // Header + 5 rows
+                    if (($handle = fopen($file_tmp_path, "r")) !== FALSE) {
+                        $i = 0;
+                        while (($data = fgetcsv($handle)) !== FALSE && $i < $row_limit) {
+                            $csv_data[] = $data;
+                            $i++;
+                        }
+                        fclose($handle);
+                    }
+
+                    if (!empty($csv_data)) {
+                        // --- AI Analysis ---
+                        require_once __DIR__ . '/ai/LocalAIApi.php';
+
+                        $header = array_shift($csv_data);
+                        $prompt = "Analyze the following CSV data. The first line is the header, followed by a few sample rows.\n\n";
+                        $prompt .= "Header: " . implode(', ', $header) . "\n";
+                        $prompt .= "Sample Rows:\n";
+                        foreach ($csv_data as $row) {
+                            $prompt .= implode(', ', $row) . "\n";
+                        }
+                        $prompt .= "\nBased on this data, provide:
+1.  A brief, insightful description of the dataset. What kind of information does it seem to contain?
+2.  Suggestions for 2-3 useful charts that could be created from this data. For each suggestion, specify the chart type (e.g., Bar Chart, Line Chart, Scatter Plot) and explain what insights it would provide.";
+
+                        $resp = LocalAIApi::createResponse([
+                            'input' => [
+                                ['role' => 'system', 'content' => 'You are a data analysis expert.'],
+                                ['role' => 'user', 'content' => $prompt],
+                            ],
+                        ]);
+
+                        if (!empty($resp['success'])) {
+                            $ai_text = LocalAIApi::extractText($resp);
+                            // Use nl2br to preserve line breaks from the AI response
+                            $analysis_result = "<div class='alert alert-success mt-3 text-start'><h4>Analysis for ".htmlspecialchars($file_name)."</h4><p>" . nl2br(htmlspecialchars($ai_text)) . "</p></div>";
+                        } else {
+                            $error_message = $resp['error'] ?? 'An unknown error occurred with the AI API.';
+                            $analysis_result = "<div class='alert alert-danger mt-3'>Error during AI analysis: " . htmlspecialchars($error_message) . "</div>";
+                        }
+                    } else {
+                        $analysis_result = "<div class='alert alert-warning mt-3'>Could not read data from the CSV file.</div>";
+                    }
+                } else {
+                    $analysis_result = "<div class='alert alert-danger mt-3'>Error uploading file.</div>";
+                }
+                echo $analysis_result;
+            }
+            ?>
+
+        </div>
+    </main>
+
+    <footer class="footer mt-auto py-3 bg-light">
+        <div class="container text-center">
+            <span class="text-muted">Built with Flatlogic</span>
+        </div>
+    </footer>
+
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="assets/js/main.js?v=<?php echo time(); ?>"></script>
 </body>
 </html>
