refactor: Replace hardcoded domain with SITE_URL constant across metadata and schema definitions for improved configurability.

app/[locale]/blog/[slug]/page.tsx

@@ -20,9 +20,11 @@ interface BlogPostProps {
   };
 }
 
-export async function generateMetadata({ params: { locale, slug } }: BlogPostProps): Promise<Metadata> {
+export async function generateMetadata({
+  params: { locale, slug },
+}: BlogPostProps): Promise<Metadata> {
   const post = await getPostBySlug(slug, locale);
-  
+
   if (!post) return {};
 
   const description = post.frontmatter.excerpt || '';
@@ -32,8 +34,8 @@ export async function generateMetadata({ params: { locale, slug } }: BlogPostPro
     alternates: {
       canonical: `/${locale}/blog/${slug}`,
       languages: {
-        'de': `/de/blog/${slug}`,
-        'en': `/en/blog/${slug}`,
+        de: `/de/blog/${slug}`,
+        en: `/en/blog/${slug}`,
         'x-default': `/en/blog/${slug}`,
       },
     },
@@ -43,7 +45,7 @@ export async function generateMetadata({ params: { locale, slug } }: BlogPostPro
       type: 'article',
       publishedTime: post.frontmatter.date,
       authors: ['KLZ Cables'],
-      url: `https://klz-cables.com/${locale}/blog/${slug}`,
+      url: `${SITE_URL}/${locale}/blog/${slug}`,
       images: getOGImageMetadata(`blog/${slug}`, post.frontmatter.title, locale),
     },
     twitter: {
@@ -66,16 +68,15 @@ export default async function BlogPost({ params: { locale, slug } }: BlogPostPro
 
   return (
     <article className="bg-white min-h-screen font-sans selection:bg-primary/10 selection:text-primary">
-      
       {/* Featured Image Header */}
       {post.frontmatter.featuredImage ? (
         <div className="relative w-full h-[70vh] min-h-[500px] overflow-hidden group">
-          <div 
+          <div
             className="absolute inset-0 bg-cover bg-center transition-transform duration-[3s] ease-out scale-110 group-hover:scale-100"
             style={{ backgroundImage: `url(${post.frontmatter.featuredImage})` }}
           />
           <div className="absolute inset-0 bg-gradient-to-t from-neutral-dark via-neutral-dark/40 to-transparent" />
-          
+
           {/* Title overlay on image */}
           <div className="absolute inset-0 flex flex-col justify-end pb-16 md:pb-24">
             <div className="container mx-auto px-4">
@@ -87,7 +88,10 @@ export default async function BlogPost({ params: { locale, slug } }: BlogPostPro
                     </span>
                   </div>
                 )}
-                <Heading level={1} className="text-white mb-8 drop-shadow-2xl animate-slight-fade-in-from-bottom [animation-delay:200ms]">
+                <Heading
+                  level={1}
+                  className="text-white mb-8 drop-shadow-2xl animate-slight-fade-in-from-bottom [animation-delay:200ms]"
+                >
                   {post.frontmatter.title}
                 </Heading>
                 <div className="flex flex-wrap items-center gap-6 text-white/80 text-sm md:text-base font-medium animate-slight-fade-in-from-bottom [animation-delay:400ms]">
@@ -95,7 +99,7 @@ export default async function BlogPost({ params: { locale, slug } }: BlogPostPro
                     {new Date(post.frontmatter.date).toLocaleDateString(locale, {
                       year: 'numeric',
                       month: 'long',
-                      day: 'numeric'
+                      day: 'numeric',
                     })}
                   </time>
                   <span className="w-1 h-1 bg-white/30 rounded-full" />
@@ -123,7 +127,7 @@ export default async function BlogPost({ params: { locale, slug } }: BlogPostPro
                 {new Date(post.frontmatter.date).toLocaleDateString(locale, {
                   year: 'numeric',
                   month: 'long',
-                  day: 'numeric'
+                  day: 'numeric',
                 })}
               </time>
               <span className="w-1 h-1 bg-neutral-300 rounded-full" />
@@ -168,8 +172,18 @@ export default async function BlogPost({ params: { locale, slug } }: BlogPostPro
                 href={`/${locale}/blog`}
                 className="inline-flex items-center gap-3 text-text-secondary hover:text-primary font-bold text-sm uppercase tracking-widest transition-all group"
               >
-                <svg className="w-5 h-5 transition-transform group-hover:-translate-x-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
+                <svg
+                  className="w-5 h-5 transition-transform group-hover:-translate-x-2"
+                  fill="none"
+                  stroke="currentColor"
+                  viewBox="0 0 24 24"
+                >
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    strokeWidth={2}
+                    d="M15 19l-7-7 7-7"
+                  />
                 </svg>
                 {locale === 'de' ? 'Zurück zur Übersicht' : 'Back to Overview'}
               </Link>
@@ -188,57 +202,63 @@ export default async function BlogPost({ params: { locale, slug } }: BlogPostPro
       {/* Structured Data */}
       <JsonLd
         id={`jsonld-${slug}`}
-        data={{
-          '@context': 'https://schema.org',
-          '@type': 'BlogPosting',
-          headline: post.frontmatter.title,
-          datePublished: post.frontmatter.date,
-          dateModified: post.frontmatter.date,
-          image: post.frontmatter.featuredImage ? `https://klz-cables.com${post.frontmatter.featuredImage}` : undefined,
-          author: {
-            '@type': 'Organization',
-            name: 'KLZ Cables',
-            url: 'https://klz-cables.com',
-            logo: 'https://klz-cables.com/logo-blue.svg'
-          },
-          publisher: {
-            '@type': 'Organization',
-            name: 'KLZ Cables',
-            logo: {
-              '@type': 'ImageObject',
-              url: 'https://klz-cables.com/logo-blue.svg',
+        data={
+          {
+            '@context': 'https://schema.org',
+            '@type': 'BlogPosting',
+            headline: post.frontmatter.title,
+            datePublished: post.frontmatter.date,
+            dateModified: post.frontmatter.date,
+            image: post.frontmatter.featuredImage
+              ? `${SITE_URL}${post.frontmatter.featuredImage}`
+              : undefined,
+            author: {
+              '@type': 'Organization',
+              name: 'KLZ Cables',
+              url: SITE_URL,
+              logo: `${SITE_URL}/logo-blue.svg`,
             },
-          },
-          description: post.frontmatter.excerpt,
-          mainEntityOfPage: {
-            '@type': 'WebPage',
-            '@id': `https://klz-cables.com/${locale}/blog/${slug}`,
-          },
-          articleSection: post.frontmatter.category,
-          wordCount: post.content.split(/\s+/).length,
-          timeRequired: `PT${getReadingTime(post.content)}M`
-        } as any}
+            publisher: {
+              '@type': 'Organization',
+              name: 'KLZ Cables',
+              logo: {
+                '@type': 'ImageObject',
+                url: `${SITE_URL}/logo-blue.svg`,
+              },
+            },
+            description: post.frontmatter.excerpt,
+            mainEntityOfPage: {
+              '@type': 'WebPage',
+              '@id': `${SITE_URL}/${locale}/blog/${slug}`,
+            },
+            articleSection: post.frontmatter.category,
+            wordCount: post.content.split(/\s+/).length,
+            timeRequired: `PT${getReadingTime(post.content)}M`,
+          } as any
+        }
       />
       <JsonLd
         id={`breadcrumb-${slug}`}
-        data={{
-          '@context': 'https://schema.org',
-          '@type': 'BreadcrumbList',
-          itemListElement: [
-            {
-              '@type': 'ListItem',
-              position: 1,
-              name: 'Blog',
-              item: `https://klz-cables.com/${locale}/blog`,
-            },
-            {
-              '@type': 'ListItem',
-              position: 2,
-              name: post.frontmatter.title,
-              item: `https://klz-cables.com/${locale}/blog/${slug}`,
-            },
-          ],
-        } as any}
+        data={
+          {
+            '@context': 'https://schema.org',
+            '@type': 'BreadcrumbList',
+            itemListElement: [
+              {
+                '@type': 'ListItem',
+                position: 1,
+                name: 'Blog',
+                item: `${SITE_URL}/${locale}/blog`,
+              },
+              {
+                '@type': 'ListItem',
+                position: 2,
+                name: post.frontmatter.title,
+                item: `${SITE_URL}/${locale}/blog/${slug}`,
+              },
+            ],
+          } as any
+        }
       />
     </article>
   );