feat(performance): Core Web Vitals optimizations

- Font optimization: Replace @font-face with next/font/google (DM Sans, Inter) for faster font loading and no render-blocking
- Image optimization: Add Unsplash to remotePatterns, configure AVIF/WebP formats, add device/image sizes
- Convert native <img> tags to next/image with proper sizing and priority for LCP images
- Add optimizePackageImports for lucide-react and framer-motion to reduce bundle size
- Fix CLS: Urgency message uses fixed min-height instead of animated height
- Fix CLS: ProductCard quick-add button uses opacity instead of translate for hover
- Convert HeroVideo scroll indicator to CSS animation
- Script loading: Rybbit uses lazyOnload strategy for better INP

src/components/home/HeroVideo.tsx

@@ -2,6 +2,7 @@
 
 import { motion } from "framer-motion";
 import Link from "next/link";
+import Image from "next/image";
 import { useTranslations } from "next-intl";
 import { ChevronDown } from "lucide-react";
 
@@ -22,13 +23,16 @@ export default function HeroVideo({ locale = "sr" }: HeroVideoProps) {
 
   return (
     <section className="relative min-h-screen w-full overflow-hidden">
-      {/* Background Image with Overlay */}
-      <div 
-        className="absolute inset-0 bg-cover bg-center bg-no-repeat"
-        style={{
-          backgroundImage: `url('https://images.unsplash.com/photo-1608571423902-eed4a5ad8108?q=80&w=2574&auto=format&fit=crop')`,
-        }}
-      >
+      {/* Background Image with Overlay - Using next/image for LCP optimization */}
+      <div className="absolute inset-0">
+        <Image
+          src="https://images.unsplash.com/photo-1608571423902-eed4a5ad8108?q=80&w=2574&auto=format&fit=crop"
+          alt=""
+          fill
+          priority
+          className="object-cover"
+          sizes="100vw"
+        />
         <div className="absolute inset-0 bg-gradient-to-b from-black/50 via-black/40 to-black/70" />
       </div>
 
@@ -132,21 +136,16 @@ export default function HeroVideo({ locale = "sr" }: HeroVideoProps) {
       </div>
 
       {/* Scroll Indicator */}
-      <motion.button
-        initial={{ opacity: 0 }}
-        animate={{ opacity: 1 }}
-        transition={{ delay: 1.5, duration: 0.8 }}
+      <button
         onClick={scrollToContent}
-        className="absolute bottom-10 left-1/2 -translate-x-1/2 text-white/60 hover:text-white transition-colors cursor-pointer"
+        className="absolute bottom-10 left-1/2 -translate-x-1/2 text-white/60 hover:text-white transition-colors cursor-pointer opacity-0 animate-fade-in"
+        style={{ animationDelay: '1.5s', animationFillMode: 'forwards' }}
         aria-label="Scroll to content"
       >
-        <motion.div
-          animate={{ y: [0, 8, 0] }}
-          transition={{ repeat: Infinity, duration: 1.5, ease: "easeInOut" }}
-        >
+        <div className="scroll-indicator">
           <ChevronDown className="w-6 h-6" strokeWidth={1.5} />
-        </motion.div>
-      </motion.button>
+        </div>
+      </button>
     </section>
   );
 }