feat(a11y): implement screen reader support and accessibility optimizations

components/ContactForm.tsx

@@ -66,7 +66,11 @@ export default function ContactForm() {
 
   if (status === 'success') {
     return (
-      <Card className="p-6 md:p-12 rounded-2xl md:rounded-[40px] border-none shadow-2xl text-center">
+      <Card
+        className="p-6 md:p-12 rounded-2xl md:rounded-[40px] border-none shadow-2xl text-center"
+        role="alert"
+        aria-live="polite"
+      >
         <div className="w-20 h-20 bg-accent rounded-full flex items-center justify-center mx-auto mb-6 shadow-lg shadow-accent/20">
           <svg
             className="w-10 h-10 text-primary-dark"
@@ -93,7 +97,11 @@ export default function ContactForm() {
 
   if (status === 'error') {
     return (
-      <Card className="p-6 md:p-12 rounded-2xl md:rounded-[40px] border-destructive/20 shadow-2xl text-center bg-destructive/5 animate-slide-up">
+      <Card
+        className="p-6 md:p-12 rounded-2xl md:rounded-[40px] border-destructive/20 shadow-2xl text-center bg-destructive/5 animate-slide-up"
+        role="alert"
+        aria-live="assertive"
+      >
         <div className="w-20 h-20 bg-destructive rounded-full flex items-center justify-center mx-auto mb-6 shadow-lg shadow-destructive/20">
           <svg
             className="w-10 h-10 text-destructive-foreground"
@@ -132,40 +140,43 @@ export default function ContactForm() {
       </Heading>
       <form onSubmit={handleSubmit} className="grid grid-cols-1 md:grid-cols-2 gap-4 md:gap-8">
         <div className="space-y-1 md:space-y-2">
-          <Label htmlFor="name">{t('form.name')}</Label>
+          <Label htmlFor="contact-name">{t('form.name')}</Label>
           <Input
             type="text"
-            id="name"
+            id="contact-name"
             name="name"
             autoComplete="name"
             enterKeyHint="next"
-            onFocus={() => handleFocus('name')}
+            onFocus={() => handleFocus('contact-name')}
+            aria-label={t('form.name')}
             required
           />
         </div>
         <div className="space-y-1 md:space-y-2">
-          <Label htmlFor="email">{t('form.email')}</Label>
+          <Label htmlFor="contact-email">{t('form.email')}</Label>
           <Input
             type="email"
-            id="email"
+            id="contact-email"
             name="email"
             autoComplete="email"
             inputMode="email"
             enterKeyHint="next"
             placeholder={t('form.emailPlaceholder')}
-            onFocus={() => handleFocus('email')}
+            onFocus={() => handleFocus('contact-email')}
+            aria-label={t('form.email')}
             required
           />
         </div>
         <div className="md:col-span-2 space-y-1 md:space-y-2">
-          <Label htmlFor="message">{t('form.message')}</Label>
+          <Label htmlFor="contact-message">{t('form.message')}</Label>
           <Textarea
-            id="message"
+            id="contact-message"
             name="message"
             rows={4}
             enterKeyHint="send"
             placeholder={t('form.messagePlaceholder')}
-            onFocus={() => handleFocus('message')}
+            onFocus={() => handleFocus('contact-message')}
+            aria-label={t('form.message')}
             required
           />
         </div>

components/DatasheetDownload.tsx

@@ -42,6 +42,7 @@ export default function DatasheetDownload({ datasheetPath, className }: Datashee
               fill="none"
               stroke="currentColor"
               viewBox="0 0 24 24"
+              aria-hidden="true"
             >
               <path
                 strokeLinecap="round"
@@ -69,7 +70,13 @@ export default function DatasheetDownload({ datasheetPath, className }: Datashee
 
           {/* Arrow Icon */}
           <div className="flex h-10 w-10 items-center justify-center rounded-full bg-white/5 text-white/20 group-hover:bg-accent group-hover:text-white group-hover:translate-x-1 transition-all duration-500">
-            <svg className="h-6 w-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <svg
+              className="h-6 w-6"
+              fill="none"
+              stroke="currentColor"
+              viewBox="0 0 24 24"
+              aria-hidden="true"
+            >
               <path
                 strokeLinecap="round"
                 strokeLinejoin="round"

components/Footer.tsx

@@ -34,7 +34,7 @@ export default function Footer() {
             >
               <Image
                 src="/logo-white.svg"
-                alt={t('products')}
+                alt="KLZ Vertriebs GmbH"
                 width={150}
                 height={40}
                 className="h-10 w-auto transition-transform duration-500 group-hover:scale-110"
@@ -67,9 +67,9 @@ export default function Footer() {
 
           {/* Links Columns */}
           <div className="lg:col-span-2">
-            <h4 className="text-accent font-bold uppercase tracking-widest text-xs md:text-sm mb-8">
+            <h2 className="text-accent font-bold uppercase tracking-widest text-xs md:text-sm mb-8">
               {t('legal')}
-            </h4>
+            </h2>
             <ul className="space-y-4 text-white/70 list-none m-0 p-0">
               <li>
                 <Link
@@ -120,9 +120,9 @@ export default function Footer() {
           </div>
 
           <div className="lg:col-span-2">
-            <h4 className="text-accent font-bold uppercase tracking-widest text-xs md:text-sm mb-8">
+            <h2 className="text-accent font-bold uppercase tracking-widest text-xs md:text-sm mb-8">
               {t('company')}
-            </h4>
+            </h2>
             <ul className="space-y-4 text-white/70 list-none m-0 p-0">
               <li>
                 <Link
@@ -189,9 +189,9 @@ export default function Footer() {
 
           {/* Recent Posts Column */}
           <div className="lg:col-span-4">
-            <h4 className="text-accent font-bold uppercase tracking-widest text-xs md:text-sm mb-8">
+            <h2 className="text-accent font-bold uppercase tracking-widest text-xs md:text-sm mb-8">
               {t('recentPosts')}
-            </h4>
+            </h2>
             <ul className="space-y-6 list-none m-0 p-0">
               {[
                 {

components/Header.tsx

@@ -6,7 +6,7 @@ import { motion } from 'framer-motion';
 import { useTranslations } from 'next-intl';
 import { usePathname } from 'next/navigation';
 import { Button } from './ui';
-import { useEffect, useState } from 'react';
+import { useEffect, useState, useRef } from 'react';
 import { cn } from './ui';
 import { useAnalytics } from './analytics/useAnalytics';
 import { AnalyticsEvents } from './analytics/analytics-events';
@@ -17,6 +17,8 @@ export default function Header() {
   const { trackEvent } = useAnalytics();
   const [isScrolled, setIsScrolled] = useState(false);
   const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);
+  const mobileMenuRef = useRef<HTMLDivElement>(null);
+  const closeButtonRef = useRef<HTMLButtonElement>(null);
 
   // Extract locale from pathname
   const currentLocale = pathname.split('/')[1] || 'en';
@@ -34,9 +36,52 @@ export default function Header() {
   }, []);
 
   // Prevent scroll when mobile menu is open
+  // Prevent scroll when mobile menu is open and handle focus trap
   useEffect(() => {
     if (isMobileMenuOpen) {
       document.body.style.overflow = 'hidden';
+      // Focus trap logic
+      const focusableElements = mobileMenuRef.current?.querySelectorAll(
+        'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])',
+      );
+
+      if (focusableElements && focusableElements.length > 0) {
+        const firstElement = focusableElements[0] as HTMLElement;
+        const lastElement = focusableElements[focusableElements.length - 1] as HTMLElement;
+
+        const handleTabKey = (e: KeyboardEvent) => {
+          if (e.key === 'Tab') {
+            if (e.shiftKey) {
+              if (document.activeElement === firstElement) {
+                e.preventDefault();
+                lastElement.focus();
+              }
+            } else {
+              if (document.activeElement === lastElement) {
+                e.preventDefault();
+                firstElement.focus();
+              }
+            }
+          }
+        };
+
+        const handleEscapeKey = (e: KeyboardEvent) => {
+          if (e.key === 'Escape') {
+            setIsMobileMenuOpen(false);
+          }
+        };
+
+        document.addEventListener('keydown', handleTabKey);
+        document.addEventListener('keydown', handleEscapeKey);
+
+        // Focus the first element when menu opens
+        setTimeout(() => firstElement.focus(), 100);
+
+        return () => {
+          document.removeEventListener('keydown', handleTabKey);
+          document.removeEventListener('keydown', handleEscapeKey);
+        };
+      }
     } else {
       document.body.style.overflow = 'unset';
     }
@@ -227,6 +272,8 @@ export default function Header() {
                 textColorClass,
               )}
               aria-label={t('toggleMenu')}
+              aria-expanded={isMobileMenuOpen}
+              aria-controls="mobile-menu"
               initial={{ scale: 0.8, opacity: 0, rotate: -180 }}
               animate={{ scale: 1, opacity: 1, rotate: 0 }}
               transition={{
@@ -288,6 +335,11 @@ export default function Header() {
               ? 'opacity-100 translate-y-0'
               : 'opacity-0 -translate-y-full pointer-events-none',
           )}
+          id="mobile-menu"
+          role="dialog"
+          aria-modal="true"
+          aria-label={t('menu')}
+          ref={mobileMenuRef}
         >
           <motion.div
             className="flex-grow flex flex-col justify-center items-center p-8 space-y-8"

components/Lightbox.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import React, { useEffect, useState, useCallback } from 'react';
+import React, { useEffect, useState, useCallback, useRef } from 'react';
 import Image from 'next/image';
 import { createPortal } from 'react-dom';
 import { motion, AnimatePresence } from 'framer-motion';
@@ -19,6 +19,8 @@ export default function Lightbox({ isOpen, images, initialIndex, onClose }: Ligh
   const pathname = usePathname();
   const [currentIndex, setCurrentIndex] = useState(initialIndex);
   const [mounted, setMounted] = useState(false);
+  const closeButtonRef = useRef<HTMLButtonElement>(null);
+  const previousFocusRef = useRef<HTMLElement | null>(null);
 
   useEffect(() => {
     setMounted(true); // eslint-disable-line react-hooks/set-state-in-effect
@@ -76,12 +78,50 @@ export default function Lightbox({ isOpen, images, initialIndex, onClose }: Ligh
   }, [isOpen, currentIndex, updateUrl]);
 
   useEffect(() => {
-    if (!isOpen) return;
+    if (!isOpen) {
+      if (previousFocusRef.current) {
+        previousFocusRef.current.focus();
+      }
+      return;
+    }
+
+    // Capture previous focus
+    previousFocusRef.current = document.activeElement as HTMLElement;
+
+    // Focus close button on open
+    setTimeout(() => closeButtonRef.current?.focus(), 100);
 
     const handleKeyDown = (e: KeyboardEvent) => {
       if (e.key === 'Escape') handleClose();
       if (e.key === 'ArrowLeft') prevImage();
       if (e.key === 'ArrowRight') nextImage();
+
+      // Focus Trap
+      if (e.key === 'Tab') {
+        const focusableElements = document.querySelectorAll(
+          'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])',
+        );
+        const modalElements = Array.from(focusableElements).filter((el) =>
+          document.querySelector('[role="dialog"]')?.contains(el),
+        );
+
+        if (modalElements.length === 0) return;
+
+        const firstElement = modalElements[0] as HTMLElement;
+        const lastElement = modalElements[modalElements.length - 1] as HTMLElement;
+
+        if (e.shiftKey) {
+          if (document.activeElement === firstElement) {
+            lastElement.focus();
+            e.preventDefault();
+          }
+        } else {
+          if (document.activeElement === lastElement) {
+            firstElement.focus();
+            e.preventDefault();
+          }
+        }
+      }
     };
 
     // Lock scroll
@@ -101,7 +141,11 @@ export default function Lightbox({ isOpen, images, initialIndex, onClose }: Ligh
   return createPortal(
     <AnimatePresence>
       {isOpen && (
-        <div className="fixed inset-0 z-[99999] flex items-center justify-center">
+        <div
+          className="fixed inset-0 z-[99999] flex items-center justify-center"
+          role="dialog"
+          aria-modal="true"
+        >
           <motion.div
             initial={{ opacity: 0 }}
             animate={{ opacity: 1 }}
@@ -116,6 +160,7 @@ export default function Lightbox({ isOpen, images, initialIndex, onClose }: Ligh
             animate={{ opacity: 1, scale: 1 }}
             exit={{ opacity: 0, scale: 0.5 }}
             transition={{ delay: 0.1, duration: 0.4 }}
+            ref={closeButtonRef}
             onClick={handleClose}
             className="absolute top-6 right-6 text-white/60 hover:text-white transition-all duration-500 z-[10000] rounded-full w-14 h-14 flex items-center justify-center hover:bg-white/5 group border border-white/10"
             aria-label="Close lightbox"

components/ProductTechnicalData.tsx

@@ -31,9 +31,9 @@ export default function ProductTechnicalData({ data }: ProductTechnicalDataProps
   const { technicalItems = [], voltageTables = [] } = data;
 
   const toggleTable = (idx: number) => {
-    setExpandedTables(prev => ({
+    setExpandedTables((prev) => ({
       ...prev,
-      [idx]: !prev[idx]
+      [idx]: !prev[idx],
     }));
   };
 
@@ -48,9 +48,16 @@ export default function ProductTechnicalData({ data }: ProductTechnicalDataProps
           <dl className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-x-12 gap-y-8">
             {technicalItems.map((item, idx) => (
               <div key={idx} className="flex flex-col group">
-                <dt className="text-sm font-bold uppercase tracking-widest text-primary/40 mb-2 group-hover:text-accent transition-colors">{item.label}</dt>
+                <dt className="text-sm font-bold uppercase tracking-widest text-primary/40 mb-2 group-hover:text-accent transition-colors">
+                  {item.label}
+                </dt>
                 <dd className="text-lg font-semibold text-text-primary">
-                  {item.value} {item.unit && <span className="text-sm font-normal text-text-secondary ml-1">{item.unit}</span>}
+                  {item.value}{' '}
+                  {item.unit && (
+                    <span className="text-sm font-normal text-text-secondary ml-1">
+                      {item.unit}
+                    </span>
+                  )}
                 </dd>
               </div>
             ))}
@@ -61,29 +68,38 @@ export default function ProductTechnicalData({ data }: ProductTechnicalDataProps
       {voltageTables.map((table, idx) => {
         const isExpanded = expandedTables[idx];
         const hasManyRows = table.rows.length > 10;
-        
+
         return (
-          <div key={idx} className="bg-white p-8 md:p-12 rounded-[32px] shadow-sm border border-neutral-dark/5 overflow-hidden">
+          <div
+            key={idx}
+            className="bg-white p-8 md:p-12 rounded-[32px] shadow-sm border border-neutral-dark/5 overflow-hidden"
+          >
             <h3 className="text-2xl font-bold text-primary mb-8 flex items-center gap-3">
               <div className="w-2 h-8 bg-accent rounded-full" />
-              {table.voltageLabel !== 'Voltage unknown' && table.voltageLabel !== 'Spannung unbekannt' 
-                ? table.voltageLabel 
+              {table.voltageLabel !== 'Voltage unknown' &&
+              table.voltageLabel !== 'Spannung unbekannt'
+                ? table.voltageLabel
                 : 'Technical Specifications'}
             </h3>
-            
+
             {table.metaItems.length > 0 && (
               <dl className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-8 mb-12 bg-neutral-light/50 p-8 rounded-2xl border border-neutral-dark/5">
                 {table.metaItems.map((item, mIdx) => (
                   <div key={mIdx}>
-                    <dt className="text-[10px] font-black uppercase tracking-[0.2em] text-primary/40 mb-1">{item.label}</dt>
-                    <dd className="font-bold text-primary">{item.value} {item.unit}</dd>
+                    <dt className="text-[10px] font-black uppercase tracking-[0.2em] text-primary/40 mb-1">
+                      {item.label}
+                    </dt>
+                    <dd className="font-bold text-primary">
+                      {item.value} {item.unit}
+                    </dd>
                   </div>
                 ))}
               </dl>
             )}
 
             <div className="relative">
-              <div 
+              <div
+                id={`voltage-table-${idx}`}
                 className={`overflow-x-auto -mx-8 md:-mx-12 px-8 md:px-12 transition-all duration-500 ease-in-out ${
                   !isExpanded && hasManyRows ? 'max-h-[400px] overflow-y-hidden' : 'max-h-[none]'
                 }`}
@@ -91,11 +107,18 @@ export default function ProductTechnicalData({ data }: ProductTechnicalDataProps
                 <table className="min-w-full border-separate border-spacing-0">
                   <thead>
                     <tr>
-                      <th scope="col" className="px-3 py-3 text-left text-[10px] font-black text-primary/40 uppercase tracking-[0.2em] sticky left-0 bg-white z-10 border-b border-neutral-dark/10">
+                      <th
+                        scope="col"
+                        className="px-3 py-3 text-left text-[10px] font-black text-primary/40 uppercase tracking-[0.2em] sticky left-0 bg-white z-10 border-b border-neutral-dark/10"
+                      >
                         Config.
                       </th>
                       {table.columns.map((col, cIdx) => (
-                        <th key={cIdx} scope="col" className="px-3 py-3 text-left text-[10px] font-black text-primary/40 uppercase tracking-[0.2em] whitespace-nowrap border-b border-neutral-dark/10">
+                        <th
+                          key={cIdx}
+                          scope="col"
+                          className="px-3 py-3 text-left text-[10px] font-black text-primary/40 uppercase tracking-[0.2em] whitespace-nowrap border-b border-neutral-dark/10"
+                        >
                           {col.label}
                         </th>
                       ))}
@@ -108,7 +131,10 @@ export default function ProductTechnicalData({ data }: ProductTechnicalDataProps
                           {row.configuration}
                         </td>
                         {row.cells.map((cell, cellIdx) => (
-                          <td key={cellIdx} className="px-3 py-2 text-xs text-text-secondary whitespace-nowrap">
+                          <td
+                            key={cellIdx}
+                            className="px-3 py-2 text-xs text-text-secondary whitespace-nowrap"
+                          >
                             {cell}
                           </td>
                         ))}
@@ -127,6 +153,8 @@ export default function ProductTechnicalData({ data }: ProductTechnicalDataProps
               <div className="mt-8 flex justify-center">
                 <button
                   onClick={() => toggleTable(idx)}
+                  aria-expanded={isExpanded}
+                  aria-controls={`voltage-table-${idx}`}
                   className="px-8 py-3 rounded-full bg-primary text-white text-sm font-bold uppercase tracking-widest hover:bg-accent hover:text-primary transition-all duration-300 shadow-lg hover:shadow-accent/20"
                 >
                   {isExpanded ? t('showLess') : t('showMore')}

components/RelatedProducts.tsx

@@ -106,6 +106,7 @@ export default async function RelatedProducts({
                     fill="none"
                     stroke="currentColor"
                     viewBox="0 0 24 24"
+                    aria-hidden="true"
                   >
                     <path
                       strokeLinecap="round"

components/RequestQuoteForm.tsx

@@ -80,7 +80,11 @@ export default function RequestQuoteForm({ productName }: RequestQuoteFormProps)
 
   if (status === 'success') {
     return (
-      <div className="bg-accent/5 border border-accent/20 text-primary-dark p-4 rounded-xl text-center animate-fade-in !mt-0 w-full">
+      <div
+        className="bg-accent/5 border border-accent/20 text-primary-dark p-4 rounded-xl text-center animate-fade-in !mt-0 w-full"
+        role="alert"
+        aria-live="polite"
+      >
         <div className="flex justify-center mb-3">
           <div className="w-10 h-10 bg-accent rounded-full flex items-center justify-center shadow-lg shadow-accent/20">
             <svg
@@ -118,7 +122,11 @@ export default function RequestQuoteForm({ productName }: RequestQuoteFormProps)
 
   if (status === 'error') {
     return (
-      <div className="bg-destructive/5 border border-destructive/20 text-destructive p-4 rounded-xl text-center animate-fade-in !mt-0 w-full">
+      <div
+        className="bg-destructive/5 border border-destructive/20 text-destructive p-4 rounded-xl text-center animate-fade-in !mt-0 w-full"
+        role="alert"
+        aria-live="assertive"
+      >
         <div className="flex justify-center mb-3">
           <div className="w-10 h-10 bg-destructive rounded-full flex items-center justify-center shadow-lg shadow-destructive/20">
             <svg
@@ -158,25 +166,27 @@ export default function RequestQuoteForm({ productName }: RequestQuoteFormProps)
         <div className="space-y-1 !mt-0">
           <Input
             type="email"
-            id="email"
+            id="quote-email"
             required
             value={email}
             onChange={(e) => setEmail(e.target.value)}
-            onFocus={() => handleFocus('email')}
+            onFocus={() => handleFocus('quote-email')}
             placeholder={t('email')}
+            aria-label={t('email')}
             className="h-9 text-xs !mt-0"
           />
         </div>
 
         <div className="space-y-1 !mt-0">
           <Textarea
-            id="request"
+            id="quote-request"
             required
             rows={3}
             value={request}
             onChange={(e) => setRequest(e.target.value)}
-            onFocus={() => handleFocus('request')}
+            onFocus={() => handleFocus('quote-request')}
             placeholder={t('message')}
+            aria-label={t('message')}
             className="text-xs !mt-0"
           />
         </div>

components/Scribble.tsx

@@ -18,31 +18,31 @@ export default function Scribble({ variant, className, color = '#82ed20' }: Scri
       opacity: 1,
       transition: {
         duration: 1.8,
-        ease: "easeInOut",
-      }
-    }
+        ease: 'easeInOut',
+      },
+    },
   };
 
   if (variant === 'circle') {
     return (
-      <svg 
-        className={cn("absolute pointer-events-none", className)} 
-        role="presentation" 
-        viewBox="0 0 800 350" 
+      <svg
+        className={cn('absolute pointer-events-none', className)}
+        aria-hidden="true"
+        viewBox="0 0 800 350"
         preserveAspectRatio="none"
       >
-        <motion.path 
+        <motion.path
           variants={pathVariants}
           initial="hidden"
           whileInView="visible"
           viewport={{ once: true }}
-          transform="matrix(0.9791300296783447,0,0,0.9791300296783447,400,179)" 
-          strokeLinejoin="miter" 
-          fillOpacity="0" 
-          strokeMiterlimit="4" 
-          stroke={color} 
-          strokeOpacity="1" 
-          strokeWidth="20" 
+          transform="matrix(0.9791300296783447,0,0,0.9791300296783447,400,179)"
+          strokeLinejoin="miter"
+          fillOpacity="0"
+          strokeMiterlimit="4"
+          stroke={color}
+          strokeOpacity="1"
+          strokeWidth="20"
           d=" M253,-161 C253,-161 -284.78900146484375,-201.4600067138672 -376,-21 C-469,163 67.62300109863281,174.2100067138672 256,121 C564,34 250.82899475097656,-141.6929931640625 19.10700035095215,-116.93599700927734"
         />
       </svg>
@@ -51,20 +51,20 @@ export default function Scribble({ variant, className, color = '#82ed20' }: Scri
 
   if (variant === 'underline') {
     return (
-      <svg 
-        className={cn("absolute pointer-events-none", className)} 
-        role="presentation" 
-        viewBox="-400 -55 730 60" 
+      <svg
+        className={cn('absolute pointer-events-none', className)}
+        aria-hidden="true"
+        viewBox="-400 -55 730 60"
         preserveAspectRatio="none"
       >
-        <motion.path 
+        <motion.path
           variants={pathVariants}
           initial="hidden"
           whileInView="visible"
           viewport={{ once: true }}
-          d="m -383.25 -6 c 55.25 -22 130.75 -33.5 293.25 -38 c 54.5 -0.5 195 -2.5 401 15" 
-          stroke={color} 
-          strokeWidth="20" 
+          d="m -383.25 -6 c 55.25 -22 130.75 -33.5 293.25 -38 c 54.5 -0.5 195 -2.5 401 15"
+          stroke={color}
+          strokeWidth="20"
           fill="none"
         />
       </svg>

components/SkipLink.tsx

@@ -0,0 +1,16 @@
+'use client';
+
+import { useTranslations } from 'next-intl';
+
+export default function SkipLink() {
+  const t = useTranslations('Navigation');
+
+  return (
+    <a
+      href="#main-content"
+      className="sr-only focus:not-sr-only focus:fixed focus:top-4 focus:left-4 focus:z-[100] focus:px-6 focus:py-3 focus:bg-white focus:text-primary-dark focus:font-bold focus:rounded-lg focus:shadow-xl focus:outline-none focus:ring-2 focus:ring-accent transition-all"
+    >
+      {t('skipToContent')}
+    </a>
+  );
+}

components/blog/PowerCTA.tsx

@@ -14,57 +14,84 @@ export default function PowerCTA({ locale }: PowerCTAProps) {
       <div className="absolute inset-0 opacity-10 pointer-events-none">
         <div className="absolute top-0 left-0 w-full h-full bg-[radial-gradient(#3b82f6_1px,transparent_1px)] [background-size:40px_40px]" />
       </div>
-      
+
       {/* Decorative accent */}
       <div className="absolute top-0 right-0 w-64 h-64 bg-primary/20 rounded-full blur-3xl -mr-32 -mt-32 transition-transform group-hover:scale-110 duration-1000" />
-      
+
       <div className="relative z-10">
         <div className="inline-block px-4 py-1 bg-accent/20 text-accent text-xs font-bold uppercase tracking-[0.2em] rounded-full mb-8">
           {isDe ? 'Lösungen' : 'Solutions'}
         </div>
-        
+
         <h3 className="text-2xl md:text-4xl font-bold text-white mb-8 leading-tight">
-          {isDe ? 'Bereit für die' : 'Ready for the'} 
+          {isDe ? 'Bereit für die' : 'Ready for the'}
           <span className="text-accent block">{isDe ? 'Energiewende?' : 'Energy Transition?'}</span>
         </h3>
-        
+
         <p className="text-xl text-white/70 mb-10 leading-relaxed max-w-2xl">
-          {isDe 
+          {isDe
             ? 'Von der Planung von Wind- und Solarparks bis zur Lieferung hochwertiger Energiekabel erwecken wir Ihre Projekte zum Leben.'
-            : 'From wind and solar park planning to delivering high-quality energy cables, we bring your projects to life.'
-          }
+            : 'From wind and solar park planning to delivering high-quality energy cables, we bring your projects to life.'}
         </p>
-        
+
         <div className="grid grid-cols-1 md:grid-cols-2 gap-6 mb-12">
           {[
             isDe ? 'Strategischer Hub für schnelle Lieferung' : 'Strategic hub for fast delivery',
             isDe ? 'Nachhaltige Kabelinfrastruktur' : 'Sustainable cable infrastructure',
-            isDe ? 'Expertenberatung für Großprojekte' : 'Expert consulting for large-scale projects',
-            isDe ? 'Zertifizierte Qualität nach EU-Standards' : 'Certified quality according to EU standards'
+            isDe
+              ? 'Expertenberatung für Großprojekte'
+              : 'Expert consulting for large-scale projects',
+            isDe
+              ? 'Zertifizierte Qualität nach EU-Standards'
+              : 'Certified quality according to EU standards',
           ].map((item, i) => (
             <div key={i} className="flex items-center gap-4 text-white/80">
               <div className="w-6 h-6 rounded-full bg-accent/20 flex items-center justify-center flex-shrink-0">
-                <svg className="w-3 h-3 text-accent" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={3} d="M5 13l4 4L19 7" />
+                <svg
+                  className="w-3 h-3 text-accent"
+                  fill="none"
+                  stroke="currentColor"
+                  viewBox="0 0 24 24"
+                  aria-hidden="true"
+                >
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    strokeWidth={3}
+                    d="M5 13l4 4L19 7"
+                  />
                 </svg>
               </div>
               <span className="text-sm font-medium">{item}</span>
             </div>
           ))}
         </div>
-        
+
         <div className="flex flex-col sm:flex-row gap-6 items-start sm:items-center pt-8 border-t border-white/10">
           <Link
             href={`/${locale}/contact`}
             className="inline-flex items-center gap-3 px-8 py-4 bg-primary text-white font-bold rounded-full hover:bg-primary/90 transition-all shadow-xl hover:shadow-primary/20 transform hover:-translate-y-1 group/btn"
           >
             {isDe ? 'Projekt anfragen' : 'Inquire Project'}
-            <svg className="w-5 h-5 transition-transform group-hover/btn:translate-x-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 8l4 4m0 0l-4 4m4-4H3" />
+            <svg
+              className="w-5 h-5 transition-transform group-hover/btn:translate-x-1"
+              fill="none"
+              stroke="currentColor"
+              viewBox="0 0 24 24"
+              aria-hidden="true"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={2}
+                d="M17 8l4 4m0 0l-4 4m4-4H3"
+              />
             </svg>
           </Link>
           <p className="text-white/50 text-sm font-medium">
-            {isDe ? 'Kostenlose Erstberatung für Ihr Vorhaben.' : 'Free initial consultation for your project.'}
+            {isDe
+              ? 'Kostenlose Erstberatung für Ihr Vorhaben.'
+              : 'Free initial consultation for your project.'}
           </p>
         </div>
       </div>

components/home/GallerySection.tsx

@@ -33,6 +33,8 @@ export default function GallerySection() {
           {images.map((src, idx) => (
             <button
               key={idx}
+              type="button"
+              aria-label={`${t('alt')} ${idx + 1}`}
               onClick={() => {
                 const params = new URLSearchParams(searchParams.toString());
                 params.set('photo', idx.toString());

components/home/HeroIllustration.tsx

@@ -137,6 +137,7 @@ export default function HeroIllustration() {
         preserveAspectRatio="xMidYMid meet"
         fill="none"
         xmlns="http://www.w3.org/2000/svg"
+        aria-hidden="true"
       >
         <defs>
           <linearGradient id="energy-pulse" x1="0%" y1="0%" x2="100%" y2="0%">

components/home/ProductCategories.tsx

@@ -43,6 +43,7 @@ export default function ProductCategories() {
 
   return (
     <Section className="bg-neutral-light py-0 md:py-0 lg:py-0 -mt-px">
+      <h2 className="sr-only">{t('title')}</h2>
       <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4">
         {categories.map((category, idx) => (
           <Link

components/home/RecentPosts.tsx

@@ -72,6 +72,7 @@ export default async function RecentPosts({ locale }: RecentPostsProps) {
                       fill="none"
                       stroke="currentColor"
                       viewBox="0 0 24 24"
+                      aria-hidden="true"
                     >
                       <path
                         strokeLinecap="round"

components/home/WhyChooseUs.tsx

@@ -17,16 +17,29 @@ export default function WhyChooseUs() {
               <p className="text-base md:text-lg text-text-secondary leading-relaxed">
                 {t('subtitle')}
               </p>
-              
+
               <div className="mt-12 space-y-6">
                 {[0, 1, 2, 3].map((i) => (
                   <div key={i} className="flex items-center gap-4">
                     <div className="flex-shrink-0 w-6 h-6 rounded-full bg-accent flex items-center justify-center">
-                      <svg className="w-4 h-4 text-primary-dark" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={3} d="M5 13l4 4L19 7" />
+                      <svg
+                        className="w-4 h-4 text-primary-dark"
+                        fill="none"
+                        stroke="currentColor"
+                        viewBox="0 0 24 24"
+                        aria-hidden="true"
+                      >
+                        <path
+                          strokeLinecap="round"
+                          strokeLinejoin="round"
+                          strokeWidth={3}
+                          d="M5 13l4 4L19 7"
+                        />
                       </svg>
                     </div>
-                    <span className="font-bold text-primary-dark text-base md:text-base">{t(`features.${i}`)}</span>
+                    <span className="font-bold text-primary-dark text-base md:text-base">
+                      {t(`features.${i}`)}
+                    </span>
                   </div>
                 ))}
               </div>
@@ -34,12 +47,21 @@ export default function WhyChooseUs() {
           </div>
           <div className="lg:col-span-8 grid grid-cols-1 md:grid-cols-2 gap-8 order-2 lg:order-1">
             {[0, 1, 2, 3].map((idx) => (
-              <div key={idx} className="p-10 bg-white rounded-3xl border border-neutral-medium hover:border-accent transition-all duration-500 hover:shadow-xl group">
+              <div
+                key={idx}
+                className="p-10 bg-white rounded-3xl border border-neutral-medium hover:border-accent transition-all duration-500 hover:shadow-xl group"
+              >
                 <div className="w-14 h-14 bg-saturated/10 rounded-2xl flex items-center justify-center mb-8 group-hover:bg-accent transition-colors duration-500">
-                  <span className="text-white font-bold text-lg group-hover:text-primary-dark">0{idx + 1}</span>
+                  <span className="text-white font-bold text-lg group-hover:text-primary-dark">
+                    0{idx + 1}
+                  </span>
                 </div>
-                <h3 className="text-xl font-bold mb-4 text-primary-dark">{t(`items.${idx}.title`)}</h3>
-                <p className="text-text-secondary text-base md:text-base leading-relaxed">{t(`items.${idx}.description`)}</p>
+                <h3 className="text-xl font-bold mb-4 text-primary-dark">
+                  {t(`items.${idx}.title`)}
+                </h3>
+                <p className="text-text-secondary text-base md:text-base leading-relaxed">
+                  {t(`items.${idx}.description`)}
+                </p>
               </div>
             ))}
           </div>