Initial commit: Luftglanz drone website with integrated AI chat assistant

Features:
- Complete Luftglanz drone cleaning website
- AI chat assistant integrated with OpenAI API
- Expert product advice for AGO Quart and Mellerud cleaning products
- Formal German language support (Sie form)
- Secure PHP backend for API calls
- Responsive design with mobile support
- Product-specific knowledge base
- Safety statements from manufacturers
- Multi-page integration (index, products, services, contact)

Technical components:
- AI chat widget (js/ai-chat.js)
- Chat styling (css/components/ai-chat.css)
- Backend API (ai-chat-api.php)
- Product knowledge base with detailed specifications
- Demo and documentation files

simple-handler.php

@@ -0,0 +1,50 @@
+<?php
+// Simple form handler with minimal dependencies
+$success = false;
+$error = '';
+
+// Log information regardless of method
+error_log("Request received at " . date('Y-m-d H:i:s'));
+error_log("REQUEST_METHOD: " . $_SERVER['REQUEST_METHOD']);
+
+// Handle either GET or POST
+$data = $_SERVER['REQUEST_METHOD'] === 'POST' ? $_POST : $_GET;
+
+// Check if we have data
+if (!empty($data)) {
+    error_log("Form data received: " . print_r($data, true));
+    
+    // Get the name from form data
+    $name = isset($data['name']) ? $data['name'] : 'Unbekannt';
+    
+    // Prepare message
+    $message = isset($data['message']) ? $data['message'] : '';
+    
+    if (!empty($data['phone'])) {
+        $message .= "\n\nTelefonnummer: " . $data['phone'];
+    }
+    
+    // Get the subject from form data
+    $subjectField = isset($data['subject']) ? $data['subject'] : '';
+    
+    // Use basic PHP mail() function with correct sender address
+    $to = "kontakt@luftglanz.de";
+    $subject = $subjectField ?: "Neue Kontaktanfrage von $name";
+    $headers = "From: $name <luftglanz@egonetix.de>\r\n" .
+               "Reply-To: " . ($data['email'] ?? 'luftglanz@egonetix.de') . "\r\n" .
+               "X-Mailer: PHP/" . phpversion();
+    
+    try {
+        $success = mail($to, $subject, $message, $headers);
+        error_log("Mail sent: " . ($success ? "Success" : "Failed"));
+    } catch (Exception $e) {
+        error_log("Mail exception: " . $e->getMessage());
+        $error = $e->getMessage();
+    }
+}
+
+// Redirect back to index.html instead of showing debug page
+header('Location: index.html?form_status=' . ($success ? 'success' : 'error') . 
+       ($error ? '&error_message=' . urlencode($error) : ''));
+exit;
+?>