feat: add hero background images to case study detail pages

Each project page now has its image behind the hero text with a
dark gradient overlay for readability. Tags use a glass-morphism
style on the image background.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/(frontend)/[locale]/work/[slug]/page.tsx

@@ -1,3 +1,4 @@
+import Image from 'next/image';
 import { notFound } from 'next/navigation';
 import { setRequestLocale } from 'next-intl/server';
 import { routing } from '@/i18n/routing';
@@ -17,6 +18,7 @@ interface Project {
   outcome: string;
   techStack: string[];
   tags: string[];
+  image: string;
 }
 
 // ─── Data (will come from Payload CMS) ────────────────────────────────────────
@@ -35,6 +37,7 @@ const PROJECTS: Record<string, Project> = {
       "The platform processed over 200 submissions in its first season, reducing judge workload by 40% through AI-assisted pre-screening. The client praised the system's reliability and the elegance of its interface.",
     techStack: ['Next.js', 'PostgreSQL', 'OpenAI API', 'Docker', 'Private Cloud'],
     tags: ['AI Integration', 'Platform'],
+    image: '/images/monaco_high_res.jpg',
   },
   'port-nimara': {
     title: 'Port Nimara',
@@ -48,6 +51,7 @@ const PROJECTS: Record<string, Project> = {
       'The new platform increased online berth inquiries by 3x and provided the port authority with real-time content management capabilities they previously lacked.',
     techStack: ['Nuxt.js', 'Directus CMS', 'Node.js', 'Docker'],
     tags: ['Website', 'Infrastructure'],
+    image: '/images/anguilla.png',
   },
   'port-amador': {
     title: 'Port Amador',
@@ -61,6 +65,7 @@ const PROJECTS: Record<string, Project> = {
       "The redesigned platform elevated Port Amador's digital presence to match their premium positioning, with a 60% improvement in page load times and significantly increased organic traffic.",
     techStack: ['Next.js', 'Tailwind CSS', 'Framer Motion', 'Vercel'],
     tags: ['Website', 'Infrastructure'],
+    image: '/images/panama.png',
   },
 };
 
@@ -123,38 +128,53 @@ export default async function CaseStudyPage({ params }: Props) {
     <main>
 
       {/* ── Hero ── */}
-      <section className="bg-surface-low py-24">
+      <section className="relative min-h-[420px] md:min-h-[480px] flex items-end overflow-hidden">
-        <div className="container mx-auto px-6">
+        {/* Background image */}
-          <div className="max-w-3xl mx-auto flex flex-col items-center text-center gap-6">
+        <Image
+          src={project.image}
+          alt=""
+          fill
+          className="object-cover"
+          sizes="100vw"
+          priority
+        />
+        {/* Dark overlay for text readability */}
+        <div className="absolute inset-0 bg-gradient-to-t from-[rgba(25,28,29,0.85)] via-[rgba(25,28,29,0.55)] to-[rgba(25,28,29,0.3)]" />
+
+        <div className="relative z-10 container mx-auto px-6 pb-16 pt-32">
+          <div className="max-w-3xl mx-auto flex flex-col items-center text-center gap-5">
 
             {/* Tags */}
             <ScrollReveal variant="fadeIn">
               <div className="flex flex-wrap items-center justify-center gap-2">
                 {project.tags.map((tag) => (
-                  <Chip key={tag} size="md">
+                  <span
+                    key={tag}
+                    className="inline-flex items-center bg-white/15 backdrop-blur-sm text-white/90 text-[0.75rem] font-semibold px-3 py-1 rounded-full leading-none tracking-wide"
+                  >
                     {tag}
-                  </Chip>
+                  </span>
                 ))}
               </div>
             </ScrollReveal>
 
             {/* Title */}
             <ScrollReveal variant="fadeUp" delay={0.08}>
-              <h1 className="font-serif font-semibold text-on-surface text-4xl md:text-5xl lg:text-[3.25rem] leading-[1.1] tracking-[-0.02em]">
+              <h1 className="font-serif font-semibold text-white text-4xl md:text-5xl lg:text-[3.25rem] leading-[1.1] tracking-[-0.02em]">
                 {project.title}
               </h1>
             </ScrollReveal>
 
             {/* Subtitle */}
             <ScrollReveal variant="fadeUp" delay={0.16}>
-              <p className="label-md text-primary tracking-widest">
+              <p className="label-md text-white/70 tracking-widest">
                 {project.subtitle}
               </p>
             </ScrollReveal>
 
             {/* Description */}
             <ScrollReveal variant="fadeUp" delay={0.22}>
-              <p className="text-outline text-lg leading-relaxed max-w-2xl">
+              <p className="text-white/80 text-lg leading-relaxed max-w-2xl">
                 {project.description}
               </p>
             </ScrollReveal>