fix: resolve HTML hierarchy, accessibility and PDF link issues

- Fix heading level skip in ContactContent success state (H3 -> H2)
- Clean up deprecated iframe attributes in ContactContent
- Add aria-label to footer logo link for WCAG compliance
- Rename PDF assets to hyphenated filenames to fix link checks
- Update AGB page with new PDF link format

app/[locale]/agb/page.tsx

@@ -13,22 +13,27 @@ export default function AVB() {
     .filter((b) => b !== "");
 
   // Extract title and stand more robustly
-  const title = rawBlocks.find(b => b.startsWith("# "))?.replace(/^#\s+/, "") || "Allgemeine Verkaufsbedingungen";
-  const stand = rawBlocks.find(b => b.toLowerCase().startsWith("stand:")) || "Stand: April 2026";
+  const title =
+    rawBlocks.find((b) => b.startsWith("# "))?.replace(/^#\s+/, "") ||
+    "Allgemeine Verkaufsbedingungen";
+  const stand =
+    rawBlocks.find((b) => b.toLowerCase().startsWith("stand:")) ||
+    "Stand: April 2026";
 
   const sections: { title: string; content: string[] }[] = [];
   let currentSection: { title: string; content: string[] } | null = null;
 
   // Process sections, skipping title and stand blocks
   rawBlocks.forEach((block) => {
-    if (block.startsWith("# ") || block.toLowerCase().startsWith("stand:")) return;
+    if (block.startsWith("# ") || block.toLowerCase().startsWith("stand:"))
+      return;
 
     if (block.startsWith("##")) {
       // New section header: e.g. "## 1. Geltungsbereich"
       if (currentSection) sections.push(currentSection);
-      currentSection = { 
-        title: block.replace(/^##\s+/, "").trim(), 
-        content: [] 
+      currentSection = {
+        title: block.replace(/^##\s+/, "").trim(),
+        content: [],
       };
     } else if (currentSection) {
       // Clean up bold markers for better display
@@ -39,7 +44,7 @@ export default function AVB() {
   if (currentSection) sections.push(currentSection);
 
   // The very last block might be a footer/schlussbestimmung if it's not in a section
-  // In our MD, everything is in a section, so we just use the last block of the last section as potential footer if we want, 
+  // In our MD, everything is in a section, so we just use the last block of the last section as potential footer if we want,
   // but the current UI expects a separate 'footer' variable.
   const footer = "MB Grid Solutions & Services";
 
@@ -55,7 +60,7 @@ export default function AVB() {
               <p className="text-slate-500 font-medium">{stand}</p>
             </div>
             <a
-              href="/assets/AVB MB Grid 4-2026.pdf"
+              href="/assets/avb-mb-grid-4-2026.pdf"
               download
               className="btn-primary !py-3 !px-6 flex items-center gap-2"
             >

components/ContactContent.tsx

@@ -162,13 +162,8 @@ export default function Contact() {
                 <div className="w-full h-[300px] rounded-[2.5rem] overflow-hidden border border-white/10 shadow-sm grayscale hover:grayscale-0 transition-all duration-700 relative group">
                   <div className="absolute inset-0 border-2 border-accent/0 group-hover:border-accent/20 transition-all duration-500 z-10 pointer-events-none rounded-[2.5rem]" />
                   <iframe
-                    width="100%"
-                    height="100%"
-                    frameBorder="0"
-                    scrolling="no"
-                    marginHeight={0}
-                    marginWidth={0}
-                    title="Location Map"
+                    className="w-full h-full border-0"
+                    title={t("info.mapTitle") || "Location Map"}
                     src="https://www.openstreetmap.org/export/embed.html?bbox=9.445,48.815,9.465,48.825&layer=mapnik&marker=48.8198,9.4552"
                   ></iframe>
                 </div>
@@ -185,9 +180,9 @@ export default function Contact() {
                     <div className="w-20 h-20 rounded-full bg-accent/10 text-accent flex items-center justify-center mx-auto mb-8">
                       <CheckCircle size={40} />
                     </div>
-                    <h3 className="text-3xl font-bold text-primary mb-4">
+                    <h2 className="text-3xl font-bold text-primary mb-4">
                       {t("form.successTitle")}
-                    </h3>
+                    </h2>
                     <p className="text-slate-600 text-lg mb-10">
                       {t("form.successMessage")}
                     </p>

components/Layout.tsx

@@ -184,7 +184,11 @@ const Layout = ({ children }: { children: React.ReactNode }) => {
           <div className="container-custom relative z-10">
             <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-10 md:gap-12 mb-12 md:mb-16">
               <div className="lg:col-span-2">
-                <Link href="/" className="inline-block mb-6 md:mb-8 group">
+                <Link
+                  href="/"
+                  className="inline-block mb-6 md:mb-8 group"
+                  aria-label={t("nav.home")}
+                >
                   <div className="relative h-16 md:h-20 w-48 brightness-0 invert opacity-80 group-hover:opacity-100 transition-opacity">
                     <Image
                       src="/assets/logo.png"

components/StatusModal.tsx

@@ -75,9 +75,9 @@ export const StatusModal = ({
                   )}
                 </div>
 
-                <h3 className="text-3xl font-extrabold text-primary mb-4 leading-tight">
+                <h2 className="text-3xl font-extrabold text-primary mb-4 leading-tight">
                   {title}
-                </h3>
+                </h2>
                 <p className="text-slate-600 text-lg mb-10 leading-relaxed">
                   {message}
                 </p>

scripts/find-empty-anchors.ts

@@ -0,0 +1,14 @@
+import * as cheerio from "cheerio";
+import * as fs from "fs";
+
+const file = process.argv[2];
+const html = fs.readFileSync(file, "utf8");
+const $ = cheerio.load(html);
+
+$("a").each((i, el) => {
+  const text = $(el).text().trim();
+  const label = $(el).attr("aria-label");
+  if (!text && !label) {
+    console.log(`Empty anchor found: ${$(el).toString()}`);
+  }
+});