fix: Reduce component flashing on page load and scroll

- Remove mounted state checks that return null (Hero, About, Projects)
- Reduce animation delays and durations for faster initial render
- Change viewport margins from -100px to -50px for earlier trigger
- Reduce initial animation distances (y: 40 -> 20, y: 30 -> 20)
- Use requestAnimationFrame for Header mount to prevent flash
- Always render components instead of returning null to prevent layout shift
- Optimize Framer Motion transitions for smoother scrolling

app/components/Header.tsx

@@ -12,7 +12,10 @@ const Header = () => {
   const [mounted, setMounted] = useState(false);
 
   useEffect(() => {
-    setMounted(true);
+    // Use requestAnimationFrame to ensure smooth transition
+    requestAnimationFrame(() => {
+      setMounted(true);
+    });
   }, []);
 
   useEffect(() => {
@@ -41,17 +44,16 @@ const Header = () => {
     { icon: Mail, href: "mailto:contact@dk0.dev", label: "Email" },
   ];
 
-  if (!mounted) {
-    return null;
-  }
+  // Always render to prevent flash, but use opacity transition
 
   return (
     <>
       <motion.header
-        initial={{ y: -100, opacity: 0 }}
-        animate={{ y: 0, opacity: 1 }}
-        transition={{ duration: 0.8, ease: "easeOut" }}
+        initial={false}
+        animate={{ y: 0, opacity: mounted ? 1 : 0 }}
+        transition={{ duration: 0.3, ease: "easeOut" }}
         className="fixed top-6 left-0 right-0 z-50 flex justify-center px-4 pointer-events-none"
+        style={{ opacity: mounted ? 1 : 0 }}
       >
         <div
           className={`pointer-events-auto transition-all duration-500 ease-out ${
@@ -59,9 +61,9 @@ const Header = () => {
           }`}
         >
           <motion.div
-            initial={{ opacity: 0, y: -20 }}
-            animate={{ opacity: 1, y: 0 }}
-            transition={{ duration: 0.6, delay: 0.2, ease: "easeOut" }}
+            initial={false}
+            animate={{ opacity: mounted ? 1 : 0, y: 0 }}
+            transition={{ duration: 0.3, ease: "easeOut" }}
             className={`
             backdrop-blur-xl transition-all duration-500
             ${