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

css/normalize.css

@@ -0,0 +1,46 @@
+html, body, div, span, applet, object, iframe,
+h1, h2, h3, h4, h5, h6, p, blockquote, pre,
+a, abbr, acronym, address, big, cite, code,
+del, dfn, em, img, ins, kbd, q, s, samp,
+small, strike, strong, sub, sup, tt, var,
+b, u, i, center,
+dl, dt, dd, ol, ul, li,
+table, caption, tbody, tfoot, thead, tr, th, td,
+article, aside, canvas, details, embed, footer,
+header, hgroup, main, menu, nav, output, ruby,
+section, summary, time, mark, audio, video {
+    margin: 0;
+    padding: 0;
+    border: 0;
+    font-size: 100%;
+    font: inherit;
+    vertical-align: baseline;
+}
+
+article, aside, details, figcaption, figure,
+footer, header, hgroup, main, menu, nav, section {
+    display: block;
+}
+
+body {
+    line-height: 1;
+} 
+
+ol, ul {
+    list-style: none;
+}
+
+blockquote, q {
+    quotes: none;
+}
+
+blockquote:before, blockquote:after,
+q:before, q:after {
+    content: '';
+    content: none;
+}
+
+table {
+    border-collapse: collapse;
+    border-spacing: 0;
+}