fix: Final restoration with port 80

✅ COMPLETED:
1. Dockerfile uses port 80 (astro preview)
2. BaseLayout imports globals.css
3. globals.css with Tailwind v4 @theme syntax
4. index.astro has Header, Footer, FixedContact
5. All image references fixed to existing files
6. Hero uses hdpe_pipe_main.jpg
7. Product cards use hdpe001.jpg
8. pt-20 on main for fixed header

✅ TESTED LOCALLY:
- Build: 15 pages in 1.27s
- Docker build successful
- Port 80 working
- Images load
- CSS works

Ready for Easypanel deployment.

node_modules/prismjs/components/prism-birb.js

@@ -0,0 +1,23 @@
+Prism.languages.birb = Prism.languages.extend('clike', {
+	'string': {
+		pattern: /r?("|')(?:\\.|(?!\1)[^\\])*\1/,
+		greedy: true
+	},
+	'class-name': [
+		/\b[A-Z](?:[\d_]*[a-zA-Z]\w*)?\b/,
+
+		// matches variable and function return types (parameters as well).
+		/\b(?:[A-Z]\w*|(?!(?:var|void)\b)[a-z]\w*)(?=\s+\w+\s*[;,=()])/
+	],
+	'keyword': /\b(?:assert|break|case|class|const|default|else|enum|final|follows|for|grab|if|nest|new|next|noSeeb|return|static|switch|throw|var|void|while)\b/,
+	'operator': /\+\+|--|&&|\|\||<<=?|>>=?|~(?:\/=?)?|[+\-*\/%&^|=!<>]=?|\?|:/,
+	'variable': /\b[a-z_]\w*\b/,
+});
+
+Prism.languages.insertBefore('birb', 'function', {
+	'metadata': {
+		pattern: /<\w+>/,
+		greedy: true,
+		alias: 'symbol'
+	}
+});