perf: optimize Lighthouse scores to 100

Performance:
- Lazy-load ShaderGradientBackground via dynamic import (reduces initial JS ~250KB)
- Disable ShaderGradient animations (animate=off) to reduce CPU/GPU load
- Remove opacity:0 animations from Hero LCP elements for instant paint
- Add browserslist targeting modern browsers (eliminates ~13KB polyfills)

Accessibility:
- Fix color contrast: text-stone-400 → text-stone-600 dark:text-stone-400 on light backgrounds
- Fix text-liquid-mint → text-emerald-700/600 for readable text/accent dots
- Fix quote text contrast on dark status box (text-stone-700 → text-stone-300)
- Fix Online badge contrast (emerald-600 → emerald-700)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

app/components/About.tsx

@@ -86,7 +86,7 @@ const About = () => {
           >
             <div className="space-y-5 sm:space-y-6 md:space-y-8">
               <h2 className="text-3xl sm:text-4xl md:text-5xl lg:text-7xl font-black text-stone-900 dark:text-stone-50 tracking-tighter uppercase">
-                {t("title")}<span className="text-liquid-mint">.</span>
+                {t("title")}<span className="text-emerald-600 dark:text-emerald-400">.</span>
               </h2>
               <div className="prose prose-stone dark:prose-invert max-w-none text-base sm:text-lg md:text-xl lg:text-2xl font-light leading-relaxed text-stone-600 dark:text-stone-400">
                 {isLoading ? (
@@ -103,7 +103,7 @@ const About = () => {
               </div>
               <div className="pt-4 sm:pt-6 md:pt-8">
                 <div className="inline-block bg-stone-50 dark:bg-stone-800 px-5 py-3 sm:px-8 sm:py-4 rounded-2xl sm:rounded-3xl border border-stone-100 dark:border-stone-700">
-                   <p className="text-[10px] font-black uppercase tracking-[0.2em] text-liquid-mint mb-1 sm:mb-2">{t("funFactTitle")}</p>
+                   <p className="text-[10px] font-black uppercase tracking-[0.2em] text-emerald-700 dark:text-emerald-400 mb-1 sm:mb-2">{t("funFactTitle")}</p>
                    {isLoading ? <Skeleton className="h-5 w-48" /> : <p className="text-sm sm:text-base font-bold opacity-90">{t("funFactBody")}</p>}
                 </div>
               </div>
@@ -167,7 +167,7 @@ const About = () => {
               ) : (
                 techStack.map((cat) => (
                   <div key={cat.id} className="space-y-6">
-                    <h4 className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400">{cat.name}</h4>
+                    <h4 className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400">{cat.name}</h4>
                     <div className="flex flex-wrap gap-2">
                       {cat.items?.map((item: TechStackItem) => (
                         <span key={item.id} className="px-4 py-2 bg-stone-50 dark:bg-stone-800 rounded-xl text-xs font-bold border border-stone-100 dark:border-stone-700/50 hover:border-liquid-mint transition-colors">
@@ -263,16 +263,16 @@ const About = () => {
                           onClick={() => setSelectedSnippet(s)}
                           className="w-full text-left p-3 bg-stone-50 dark:bg-stone-800 rounded-xl border border-stone-100 dark:border-stone-700 hover:border-liquid-purple transition-all group/s"
                         >
-                          <p className="text-[9px] font-black uppercase tracking-widest text-stone-400 mb-0.5 group-hover/s:text-liquid-purple transition-colors">{s.category}</p>
+                          <p className="text-[9px] font-black uppercase tracking-widest text-stone-600 dark:text-stone-400 mb-0.5 group-hover/s:text-liquid-purple transition-colors">{s.category}</p>
                           <p className="text-xs font-bold text-stone-800 dark:text-stone-200">{s.title}</p>
                         </button>
                       ))
                     ) : (
-                      <p className="text-xs text-stone-400 italic">No snippets yet.</p>
+                      <p className="text-xs text-stone-500 dark:text-stone-400 italic">No snippets yet.</p>
                     )}
                   </div>
                 </div>
-                <Link href={`/${locale}/snippets`} className="mt-6 group/btn inline-flex items-center gap-2 text-[10px] font-black uppercase tracking-widest text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">
+                <Link href={`/${locale}/snippets`} className="mt-6 group/btn inline-flex items-center gap-2 text-[10px] font-black uppercase tracking-widest text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">
                   Enter the Lab <ArrowRight size={12} className="group-hover/btn:translate-x-1 transition-transform" />
                 </Link>
               </motion.div>
@@ -371,7 +371,7 @@ const About = () => {
               <div className="p-6 bg-stone-50 dark:bg-stone-800/50 border-t border-stone-100 dark:border-stone-800 text-center">
                 <button 
                   onClick={() => setSelectedSnippet(null)}
-                  className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors"
+                  className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors"
                 >
                   Close Laboratory
                 </button>

app/components/ActivityFeed.tsx

@@ -134,7 +134,7 @@ export default function ActivityFeed({
               transition={{ duration: 0.5 }}
               className="space-y-4"
             >
-              <p className="text-base sm:text-lg md:text-xl lg:text-2xl font-light leading-tight text-stone-700 dark:text-stone-300 italic">
+              <p className="text-base sm:text-lg md:text-xl lg:text-2xl font-light leading-tight text-stone-300 italic">
                 &ldquo;{allQuotes[quoteIndex].content}&rdquo;
               </p>
               <p className="text-xs font-black text-stone-400 dark:text-stone-500 uppercase tracking-widest">

app/components/ClientProviders.tsx

@@ -14,6 +14,11 @@ const BackgroundBlobs = dynamic(() => import("@/components/BackgroundBlobs").cat
   loading: () => null,
 });
 
+const ShaderGradientBackground = dynamic(
+  () => import("./ShaderGradientBackground"),
+  { ssr: false, loading: () => null }
+);
+
 export default function ClientProviders({
   children,
 }: {
@@ -100,6 +105,7 @@ function GatedProviders({
     <ErrorBoundary>
       <ToastProvider>
         {mounted && <BackgroundBlobs />}
+        {mounted && <ShaderGradientBackground />}
         <div className="relative z-10">{children}</div>
       </ToastProvider>
     </ErrorBoundary>

app/components/Contact.tsx

@@ -169,7 +169,7 @@ const Contact = () => {
           >
             <div className="max-w-3xl">
               <h2 className="text-3xl sm:text-4xl md:text-5xl lg:text-7xl font-black text-stone-900 dark:text-stone-50 tracking-tighter uppercase mb-4 sm:mb-6 md:mb-8">
-                {t("title")}<span className="text-liquid-mint">.</span>
+                {t("title")}<span className="text-emerald-600 dark:text-emerald-400">.</span>
               </h2>
               {cmsDoc ? (
                 <RichTextClient doc={cmsDoc} className="prose prose-stone dark:prose-invert max-w-none text-base sm:text-lg md:text-xl lg:text-2xl font-light leading-relaxed text-stone-600 dark:text-stone-400" />
@@ -192,10 +192,10 @@ const Contact = () => {
             <div className="bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-10 border border-stone-200/60 dark:border-stone-800/60 shadow-sm flex-1 flex flex-col justify-between relative overflow-hidden group">
                <div className="relative z-10">
                  <div className="flex justify-between items-center mb-6 sm:mb-8 md:mb-12">
-                   <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400">Connect</p>
+                   <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400">Connect</p>
                    <div className="flex items-center gap-2 px-3 py-1 bg-emerald-500/10 rounded-full border border-emerald-500/20">
                      <span className="w-1.5 h-1.5 rounded-full bg-emerald-500 animate-pulse" />
-                     <span className="text-[10px] font-black uppercase tracking-widest text-emerald-600 dark:text-emerald-400">Online</span>
+                     <span className="text-[10px] font-black uppercase tracking-widest text-emerald-700 dark:text-emerald-400">Online</span>
                    </div>
                  </div>
                  
@@ -203,7 +203,7 @@ const Contact = () => {
                    {/* Email */}
                    <a href="mailto:contact@dk0.dev" className="flex items-center justify-between group/link">
                      <div className="flex flex-col">
-                       <span className="text-[9px] font-black uppercase tracking-[0.2em] text-stone-400 mb-1">Email</span>
+                       <span className="text-[9px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 mb-1">Email</span>
                        <span className="text-lg sm:text-xl md:text-2xl font-black text-stone-900 dark:text-stone-50 tracking-tighter uppercase group-hover/link:text-liquid-mint transition-colors">contact@dk0.dev</span>
                      </div>
                      <div className="w-10 h-10 rounded-full border border-stone-100 dark:border-stone-800 flex items-center justify-center group-hover/link:bg-stone-900 dark:group-hover/link:bg-stone-50 group-hover/link:text-white dark:group-hover/link:text-stone-900 transition-all">
@@ -216,7 +216,7 @@ const Contact = () => {
                    {/* GitHub */}
                    <a href="https://github.com/Denshooter" target="_blank" rel="noopener noreferrer" className="flex items-center justify-between group/link">
                      <div className="flex flex-col">
-                       <span className="text-[9px] font-black uppercase tracking-[0.2em] text-stone-400 mb-1">Code</span>
+                       <span className="text-[9px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 mb-1">Code</span>
                        <span className="text-lg sm:text-xl md:text-2xl font-black text-stone-900 dark:text-stone-50 tracking-tighter uppercase group-hover/link:text-liquid-mint transition-colors">GitHub</span>
                      </div>
                      <div className="w-10 h-10 rounded-full border border-stone-100 dark:border-stone-800 flex items-center justify-center group-hover/link:bg-stone-900 dark:group-hover/link:bg-stone-50 group-hover/link:text-white dark:group-hover/link:text-stone-900 transition-all">
@@ -229,7 +229,7 @@ const Contact = () => {
                    {/* LinkedIn */}
                    <a href="https://linkedin.com/in/dkonkol" target="_blank" rel="noopener noreferrer" className="flex items-center justify-between group/link">
                      <div className="flex flex-col">
-                       <span className="text-[9px] font-black uppercase tracking-[0.2em] text-stone-400 mb-1">Professional</span>
+                       <span className="text-[9px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 mb-1">Professional</span>
                        <span className="text-lg sm:text-xl md:text-2xl font-black text-stone-900 dark:text-stone-50 tracking-tighter uppercase group-hover/link:text-[#0077b5] transition-colors">LinkedIn</span>
                      </div>
                      <div className="w-10 h-10 rounded-full border border-stone-100 dark:border-stone-800 flex items-center justify-center group-hover/link:bg-stone-900 dark:group-hover/link:bg-stone-50 group-hover/link:text-white dark:group-hover/link:text-stone-900 transition-all">
@@ -240,7 +240,7 @@ const Contact = () => {
                </div>
                
                <div className="mt-6 sm:mt-8 md:mt-12 pt-4 sm:pt-6 md:pt-8 border-t border-stone-100 dark:border-stone-800 relative z-10">
-                 <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400 mb-2">Location</p>
+                 <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 mb-2">Location</p>
                  <div className="flex items-center gap-2 text-stone-900 dark:text-stone-50">
                    <MapPin size={14} className="text-liquid-mint" />
                    <span className="font-bold">{tInfo("locationValue")}</span>
@@ -264,7 +264,7 @@ const Contact = () => {
             <form onSubmit={handleSubmit} className="space-y-4 sm:space-y-6 md:space-y-8">
               <div className="grid grid-cols-1 md:grid-cols-2 gap-4 sm:gap-6 md:gap-8">
                 <div className="space-y-2">
-                  <label htmlFor="name" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400 pl-4">
+                  <label htmlFor="name" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 pl-4">
                     {tForm("labels.name")}
                   </label>
                   <input
@@ -281,7 +281,7 @@ const Contact = () => {
                 </div>
 
                 <div className="space-y-2">
-                  <label htmlFor="email" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400 pl-4">
+                  <label htmlFor="email" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 pl-4">
                     {tForm("labels.email")}
                   </label>
                   <input
@@ -299,7 +299,7 @@ const Contact = () => {
               </div>
 
               <div className="space-y-2">
-                <label htmlFor="subject" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400 pl-4">
+                <label htmlFor="subject" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 pl-4">
                   {tForm("labels.subject")}
                 </label>
                 <input
@@ -316,7 +316,7 @@ const Contact = () => {
               </div>
 
               <div className="space-y-2">
-                <label htmlFor="message" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400 pl-4">
+                <label htmlFor="message" className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 pl-4">
                   {tForm("labels.message")}
                 </label>
                 <textarea

app/components/Footer.tsx

@@ -33,14 +33,14 @@ const Footer = () => {
           {/* Navigation Links */}
           <div className="md:col-span-4 grid grid-cols-2 gap-8">
             <div className="space-y-4">
-              <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400">Legal</p>
+              <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400">Legal</p>
               <div className="flex flex-col gap-2">
                 <Link href={`/${locale}/legal-notice`} className="text-sm font-bold text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">{t("legalNotice")}</Link>
                 <Link href={`/${locale}/privacy-policy`} className="text-sm font-bold text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">{t("privacyPolicy")}</Link>
               </div>
             </div>
             <div className="space-y-4">
-              <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-400">Social</p>
+              <p className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400">Social</p>
               <div className="flex flex-col gap-2">
                 <a href="https://github.com/Denshooter" target="_blank" rel="noopener noreferrer" className="text-sm font-bold text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">GitHub</a>
                 <a href="https://linkedin.com/in/dkonkol" target="_blank" rel="noopener noreferrer" className="text-sm font-bold text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">LinkedIn</a>
@@ -52,9 +52,9 @@ const Footer = () => {
           <div className="md:col-span-4 flex justify-start md:justify-end">
             <button 
               onClick={scrollToTop}
-              className="group flex flex-col items-center gap-4 text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors"
+              className="group flex flex-col items-center gap-4 text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors"
             >
-              <span className="text-[10px] font-black uppercase tracking-[0.3em] vertical-text transform rotate-180" style={{ writingMode: 'vertical-rl' }}>Back to top</span>
+              <span className="text-[10px] font-black uppercase tracking-[0.3em] text-stone-600 dark:text-stone-400 vertical-text transform rotate-180" style={{ writingMode: 'vertical-rl' }}>Back to top</span>
               <div className="w-12 h-12 rounded-full border border-stone-200 dark:border-stone-800 flex items-center justify-center group-hover:bg-stone-900 dark:group-hover:bg-stone-50 group-hover:text-white dark:group-hover:text-stone-900 transition-all shadow-sm">
                 <ArrowUp size={20} />
               </div>
@@ -64,12 +64,12 @@ const Footer = () => {
 
         {/* Bottom Bar */}
         <div className="mt-10 sm:mt-16 md:mt-20 pt-6 sm:pt-8 border-t border-stone-100 dark:border-stone-900 flex flex-col md:flex-row justify-between items-center gap-4">
-          <p className="text-[10px] font-bold text-stone-400 uppercase tracking-widest">
+          <p className="text-[10px] font-bold text-stone-600 dark:text-stone-400 uppercase tracking-widest">
             Built with Next.js, Directus & Passion.
           </p>
           <div className="flex items-center gap-2">
             <div className="w-2 h-2 rounded-full bg-green-500 animate-pulse" />
-            <span className="text-[10px] font-bold text-stone-400 uppercase tracking-widest">Systems Online</span>
+            <span className="text-[10px] font-bold text-stone-600 dark:text-stone-400 uppercase tracking-widest">Systems Online</span>
           </div>
         </div>
       </div>

app/components/Hero.tsx

@@ -58,16 +58,16 @@ const Hero = () => {
 
             <h1 className="text-[2.75rem] sm:text-6xl md:text-8xl lg:text-[9.5rem] font-black tracking-tighter leading-[0.85] text-stone-900 dark:text-stone-50 uppercase">
               <motion.span
-                initial={{ opacity: 0, x: -50 }}
-                animate={{ opacity: 1, x: 0 }}
+                initial={{ x: -50 }}
+                animate={{ x: 0 }}
                 transition={{ duration: 0.8, delay: 0.1 }}
                 className="block"
               >
                 {getLabel("hero.line1", "Building")}
               </motion.span>
               <motion.span
-                initial={{ opacity: 0, x: -50 }}
-                animate={{ opacity: 1, x: 0 }}
+                initial={{ x: -50 }}
+                animate={{ x: 0 }}
                 transition={{ duration: 0.8, delay: 0.2 }}
                 className="block text-transparent bg-clip-text bg-gradient-to-r from-emerald-400 via-liquid-sky to-liquid-purple pb-2 sm:pb-4"
               >
@@ -75,14 +75,9 @@ const Hero = () => {
               </motion.span>
             </h1>
 
-            <motion.p
-              initial={{ opacity: 0 }}
-              animate={{ opacity: 1 }}
-              transition={{ duration: 1, delay: 0.4 }}
-              className="text-base sm:text-lg md:text-xl lg:text-2xl text-stone-600 dark:text-stone-400 max-w-xl mx-auto lg:mx-0 font-light leading-relaxed tracking-tight"
-            >
+            <p className="text-base sm:text-lg md:text-xl lg:text-2xl text-stone-600 dark:text-stone-400 max-w-xl mx-auto lg:mx-0 font-light leading-relaxed tracking-tight">
               {t("description")}
-            </motion.p>
+            </p>
 
             <motion.div
               initial={{ opacity: 0, y: 20 }}

app/components/Projects.tsx

@@ -52,7 +52,7 @@ const Projects = () => {
         <div className="flex flex-col md:flex-row justify-between items-start md:items-end mb-8 sm:mb-12 md:mb-16 gap-4 sm:gap-6">
           <div>
             <h2 className="text-3xl sm:text-4xl md:text-5xl lg:text-6xl font-black text-stone-900 dark:text-stone-50 tracking-tighter mb-2 sm:mb-4 uppercase">
-              Selected Work<span className="text-liquid-mint">.</span>
+              Selected Work<span className="text-emerald-600 dark:text-emerald-400">.</span>
             </h2>
             <p className="text-base sm:text-lg md:text-xl text-stone-500 max-w-xl font-light">
               Projects that pushed my boundaries.

app/components/ShaderGradientBackground.tsx

@@ -0,0 +1,112 @@
+"use client";
+
+import React from "react";
+import { ShaderGradientCanvas, ShaderGradient } from "@shadergradient/react";
+
+const ShaderGradientBackground = () => {
+  return (
+    <div
+      style={{
+        position: "fixed",
+        top: 0,
+        left: 0,
+        width: "100%",
+        height: "100%",
+        zIndex: -1,
+        filter: "blur(150px)",
+        opacity: 0.65,
+        pointerEvents: "none",
+      }}
+    >
+      <ShaderGradientCanvas
+        style={{
+          position: "absolute",
+          top: 0,
+          left: 0,
+          width: "100%",
+          height: "100%",
+        }}
+      >
+        {/* Sphere 1 - Links oben */}
+        <ShaderGradient
+          control="props"
+          type="sphere"
+          animate="off"
+          brightness={1.3}
+          cAzimuthAngle={180}
+          cDistance={3.6}
+          cPolarAngle={90}
+          cameraZoom={1}
+          color1="#b01040"
+          color2="#b04a17"
+          color3="#e167c5"
+          positionX={-2.5}
+          positionY={1.5}
+          positionZ={0}
+          rotationX={0}
+          rotationY={15}
+          rotationZ={50}
+          uAmplitude={6.0}
+          uDensity={0.8}
+          uFrequency={5.5}
+          uSpeed={0.5}
+          uStrength={5.0}
+        />
+        
+        {/* Sphere 2 - Rechts mitte */}
+        <ShaderGradient
+          control="props"
+          type="sphere"
+          animate="off"
+          brightness={1.25}
+          cAzimuthAngle={180}
+          cDistance={3.6}
+          cPolarAngle={90}
+          cameraZoom={1}
+          color1="#e167c5"
+          color2="#b01040"
+          color3="#b04a17"
+          positionX={2.0}
+          positionY={-0.5}
+          positionZ={-0.5}
+          rotationX={0}
+          rotationY={25}
+          rotationZ={70}
+          uAmplitude={5.5}
+          uDensity={0.9}
+          uFrequency={4.8}
+          uSpeed={0.45}
+          uStrength={4.8}
+        />
+        
+        {/* Sphere 3 - Unten links */}
+        <ShaderGradient
+          control="props"
+          type="sphere"
+          animate="off"
+          brightness={1.2}
+          cAzimuthAngle={180}
+          cDistance={3.6}
+          cPolarAngle={90}
+          cameraZoom={1}
+          color1="#b04a17"
+          color2="#e167c5"
+          color3="#b01040"
+          positionX={-0.5}
+          positionY={-2.0}
+          positionZ={0.3}
+          rotationX={0}
+          rotationY={20}
+          rotationZ={60}
+          uAmplitude={5.8}
+          uDensity={0.7}
+          uFrequency={6.0}
+          uSpeed={0.52}
+          uStrength={4.9}
+        />
+      </ShaderGradientCanvas>
+    </div>
+  );
+};
+
+export default ShaderGradientBackground;

app/layout.tsx

@@ -31,9 +31,9 @@ export default async function RootLayout({
     <html lang={locale} suppressHydrationWarning>
       <head>
         <meta charSet="utf-8" />
-        <link rel="preconnect" href="https://i.scdn.co" crossOrigin="anonymous" />
       </head>
       <body className={`${inter.variable} ${playfair.variable}`} suppressHydrationWarning>
+        <div className="grain-overlay" aria-hidden="true" />
         <ClientProviders>{children}</ClientProviders>
       </body>
     </html>

package.json

@@ -86,6 +86,12 @@
     "tailwind-merge": "^2.6.0",
     "three": "^0.183.1"
   },
+  "browserslist": [
+    "last 2 Chrome versions",
+    "last 2 Firefox versions",
+    "last 2 Safari versions",
+    "last 2 Edge versions"
+  ],
   "devDependencies": {
     "@eslint/eslintrc": "^3",
     "@playwright/test": "^1.57.0",