diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index 96c001f..7a5caab 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -24,7 +24,8 @@
       "Bash(curl:*)",
       "Bash(echo \"\n\n## CSRF Debug aktiviert!\n\nBitte teste jetzt:\n1. Browser zu http://localhost:3050/create\n2. Dynamic QR Code erstellen versuchen\n3. Server-Logs zeigen jetzt [CSRF Debug] Output\n\nIch sehe dann:\n- Ob headerToken vorhanden ist\n- Ob cookieToken vorhanden ist  \n- Ob sie übereinstimmen\n\n---\n\nStripe Portal 500 Error ist separates Problem:\nhttps://dashboard.stripe.com/test/settings/billing/portal\n→ Customer Portal Configuration muss erstellt werden\n\")",
       "Bash(pkill:*)",
-      "Skill(shadcn-ui)"
+      "Skill(shadcn-ui)",
+      "Bash(find:*)"
     ],
     "deny": [],
     "ask": []
diff --git a/src/app/(marketing)/layout.tsx b/src/app/(marketing)/layout.tsx
index 4d06f2f..cd54449 100644
--- a/src/app/(marketing)/layout.tsx
+++ b/src/app/(marketing)/layout.tsx
@@ -62,8 +62,10 @@ export default function MarketingLayout({
             <button
               className="md:hidden text-gray-900"
               onClick={() => setMobileMenuOpen(!mobileMenuOpen)}
+              aria-label={mobileMenuOpen ? 'Close menu' : 'Open menu'}
+              aria-expanded={mobileMenuOpen}
             >
-              <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true">
                 {mobileMenuOpen ? (
                   <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
                 ) : (
diff --git a/src/components/marketing/FAQ.tsx b/src/components/marketing/FAQ.tsx
index c1e952b..dec7e35 100644
--- a/src/components/marketing/FAQ.tsx
+++ b/src/components/marketing/FAQ.tsx
@@ -9,7 +9,7 @@ interface FAQProps {
 
 export const FAQ: React.FC<FAQProps> = ({ t }) => {
   const [openIndex, setOpenIndex] = useState<number | null>(null);
-  
+
   const questions = [
     'account',
     'static_vs_dynamic',
@@ -40,6 +40,7 @@ export const FAQ: React.FC<FAQProps> = ({ t }) => {
                     fill="none"
                     stroke="currentColor"
                     viewBox="0 0 24 24"
+                    aria-hidden="true"
                   >
                     <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
                   </svg>
diff --git a/src/components/marketing/Features.tsx b/src/components/marketing/Features.tsx
index 766e63f..5ad53a1 100644
--- a/src/components/marketing/Features.tsx
+++ b/src/components/marketing/Features.tsx
@@ -12,7 +12,7 @@ export const Features: React.FC<FeaturesProps> = ({ t }) => {
     {
       key: 'analytics',
       icon: (
-        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true">
           <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z" />
         </svg>
       ),
@@ -21,7 +21,7 @@ export const Features: React.FC<FeaturesProps> = ({ t }) => {
     {
       key: 'customization',
       icon: (
-        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true">
           <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M7 21a4 4 0 01-4-4V5a2 2 0 012-2h4a2 2 0 012 2v12a4 4 0 01-4 4zm0 0h12a2 2 0 002-2v-4a2 2 0 00-2-2h-2.343M11 7.343l1.657-1.657a2 2 0 012.828 0l2.829 2.829a2 2 0 010 2.828l-8.486 8.485M7 17h.01" />
         </svg>
       ),
@@ -30,7 +30,7 @@ export const Features: React.FC<FeaturesProps> = ({ t }) => {
     {
       key: 'unlimited',
       icon: (
-        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true">
           <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z" />
         </svg>
       ),
diff --git a/src/components/marketing/Hero.tsx b/src/components/marketing/Hero.tsx
index b67c62a..3cf45db 100644
--- a/src/components/marketing/Hero.tsx
+++ b/src/components/marketing/Hero.tsx
@@ -86,7 +86,7 @@ export const Hero: React.FC<HeroProps> = ({ t }) => {
               {templateCards.map((card, index) => (
                 <Card key={index} className={`${card.color} border-0 p-6 text-center hover:scale-105 transition-transform`}>
                   <div className="text-3xl mb-2">{card.icon}</div>
-                  <h3 className="font-semibold text-gray-800">{card.title}</h3>
+                  <p className="font-semibold text-gray-800">{card.title}</p>
                 </Card>
               ))}
             </div>
diff --git a/src/components/marketing/InstantGenerator.tsx b/src/components/marketing/InstantGenerator.tsx
index c94e96a..eaeb985 100644
--- a/src/components/marketing/InstantGenerator.tsx
+++ b/src/components/marketing/InstantGenerator.tsx
@@ -45,7 +45,7 @@ export const InstantGenerator: React.FC<InstantGeneratorProps> = ({ t }) => {
       const svgData = new XMLSerializer().serializeToString(svg);
       const blob = new Blob([svgData], { type: 'image/svg+xml' });
       const url = URL.createObjectURL(blob);
-      
+
       img.onload = () => {
         canvas.width = size;
         canvas.height = size;
@@ -93,50 +93,59 @@ export const InstantGenerator: React.FC<InstantGeneratorProps> = ({ t }) => {
 
             <div className="grid grid-cols-2 gap-4">
               <div>
-                <label className="block text-sm font-medium text-gray-700 mb-2">
+                <label htmlFor="foreground-color" className="block text-sm font-medium text-gray-700 mb-2">
                   {t.generator.foreground}
                 </label>
                 <div className="flex items-center space-x-2">
                   <input
+                    id="foreground-color"
                     type="color"
                     value={foregroundColor}
                     onChange={(e) => setForegroundColor(e.target.value)}
                     className="w-12 h-10 rounded border border-gray-300"
+                    aria-label="Foreground color picker"
                   />
                   <Input
+                    id="foreground-color-text"
                     value={foregroundColor}
                     onChange={(e) => setForegroundColor(e.target.value)}
                     className="flex-1"
+                    aria-label="Foreground color hex value"
                   />
                 </div>
               </div>
 
               <div>
-                <label className="block text-sm font-medium text-gray-700 mb-2">
+                <label htmlFor="background-color" className="block text-sm font-medium text-gray-700 mb-2">
                   {t.generator.background}
                 </label>
                 <div className="flex items-center space-x-2">
                   <input
+                    id="background-color"
                     type="color"
                     value={backgroundColor}
                     onChange={(e) => setBackgroundColor(e.target.value)}
                     className="w-12 h-10 rounded border border-gray-300"
+                    aria-label="Background color picker"
                   />
                   <Input
+                    id="background-color-text"
                     value={backgroundColor}
                     onChange={(e) => setBackgroundColor(e.target.value)}
                     className="flex-1"
+                    aria-label="Background color hex value"
                   />
                 </div>
               </div>
             </div>
-            
+
             <div className="grid grid-cols-2 gap-4">
               <div>
-                <label className="block text-sm font-medium text-gray-700 mb-2">
+                <label htmlFor="corner-style" className="block text-sm font-medium text-gray-700 mb-2">
                   {t.generator.corners}
                 </label>
                 <select
+                  id="corner-style"
                   value={cornerStyle}
                   onChange={(e) => setCornerStyle(e.target.value)}
                   className="w-full px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-primary-500"
@@ -147,21 +156,23 @@ export const InstantGenerator: React.FC<InstantGeneratorProps> = ({ t }) => {
               </div>
 
               <div>
-                <label className="block text-sm font-medium text-gray-700 mb-2">
+                <label htmlFor="qr-size" className="block text-sm font-medium text-gray-700 mb-2">
                   {t.generator.size}
                 </label>
                 <input
+                  id="qr-size"
                   type="range"
                   min="100"
                   max="400"
                   value={size}
                   onChange={(e) => setSize(Number(e.target.value))}
                   className="w-full"
+                  aria-label={`QR code size: ${size} pixels`}
                 />
-                <div className="text-sm text-gray-500 text-center mt-1">{size}px</div>
+                <div className="text-sm text-gray-500 text-center mt-1" aria-hidden="true">{size}px</div>
               </div>
             </div>
-            
+
             <div className="flex items-center justify-between">
               <Badge variant={hasGoodContrast ? 'success' : 'warning'}>
                 {hasGoodContrast ? t.generator.contrast_good : 'Low contrast'}
@@ -201,7 +212,7 @@ export const InstantGenerator: React.FC<InstantGeneratorProps> = ({ t }) => {
                     />
                   </div>
                 ) : (
-                  <div 
+                  <div
                     className="bg-gray-200 flex items-center justify-center text-gray-500"
                     style={{ width: 200, height: 200 }}
                   >
diff --git a/src/components/ui/Input.tsx b/src/components/ui/Input.tsx
index 6861c9f..6fc0369 100644
--- a/src/components/ui/Input.tsx
+++ b/src/components/ui/Input.tsx
@@ -7,7 +7,10 @@ interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {
 }
 
 export const Input = React.forwardRef<HTMLInputElement, InputProps>(
-  ({ className, type, label, error, onInvalid, ...props }, ref) => {
+  ({ className, type, label, error, onInvalid, id, ...props }, ref) => {
+    // Generate a unique id for accessibility if not provided
+    const inputId = id || (label ? label.toLowerCase().replace(/\s+/g, '-') : undefined);
+
     // Default English validation message
     const handleInvalid = (e: React.InvalidEvent<HTMLInputElement>) => {
       e.target.setCustomValidity('Please fill out this field.');
@@ -21,11 +24,12 @@ export const Input = React.forwardRef<HTMLInputElement, InputProps>(
     return (
       <div className="space-y-1">
         {label && (
-          <label className="block text-sm font-medium text-gray-700">
+          <label htmlFor={inputId} className="block text-sm font-medium text-gray-700">
             {label}
           </label>
         )}
         <input
+          id={inputId}
           type={type}
           className={cn(
             'flex h-10 w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm ring-offset-white file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-gray-500 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-500 focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
diff --git a/src/components/ui/ScrollToTop.tsx b/src/components/ui/ScrollToTop.tsx
index 0431bb5..10a9d11 100644
--- a/src/components/ui/ScrollToTop.tsx
+++ b/src/components/ui/ScrollToTop.tsx
@@ -41,6 +41,7 @@ export function ScrollToTop() {
             stroke="currentColor"
             viewBox="0 0 24 24"
             xmlns="http://www.w3.org/2000/svg"
+            aria-hidden="true"
           >
             <path
               strokeLinecap="round"
diff --git a/src/components/ui/Select.tsx b/src/components/ui/Select.tsx
index 06b8c66..793ef55 100644
--- a/src/components/ui/Select.tsx
+++ b/src/components/ui/Select.tsx
@@ -8,15 +8,19 @@ interface SelectProps extends React.SelectHTMLAttributes<HTMLSelectElement> {
 }
 
 export const Select = React.forwardRef<HTMLSelectElement, SelectProps>(
-  ({ className, label, error, options, ...props }, ref) => {
+  ({ className, label, error, options, id, ...props }, ref) => {
+    // Generate a unique id for accessibility if not provided
+    const selectId = id || (label ? `select-${label.toLowerCase().replace(/\s+/g, '-')}` : undefined);
+
     return (
       <div className="space-y-1">
         {label && (
-          <label className="block text-sm font-medium text-gray-700">
+          <label htmlFor={selectId} className="block text-sm font-medium text-gray-700">
             {label}
           </label>
         )}
         <select
+          id={selectId}
           className={cn(
             'flex h-10 w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm ring-offset-white focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-500 focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
             error && 'border-red-500 focus-visible:ring-red-500',