<?php
header('Content-Type: application/xml; charset=utf-8');
$host = $_SERVER['HTTP_HOST'] ?? ($_SERVER['SERVER_NAME'] ?? '');
$host = preg_replace('/[^A-Za-z0-9\.\-:]/', '', $host);
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$base = rtrim($scheme . '://' . $host, '/');
$pages = ['/', '/features/', '/guide/', '/updates/', '/download/', '/help/', '/tips/', '/faq/', '/contact/', '/about/'];
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<?php foreach($pages as $p): ?>
  <url><loc><?php echo htmlspecialchars($base . $p, ENT_XML1, 'UTF-8'); ?></loc><lastmod><?php echo date('Y-m-d'); ?></lastmod><changefreq>daily</changefreq><priority><?php echo $p==='/'?'1.0':'0.8'; ?></priority></url>
<?php endforeach; ?>
</urlset>
