Add logo image and update branding across header, footer, and emails

- Replace text logo with logo-spanglish.png in Header and Footer
- Update email templates to use logo image instead of styled text
- Add new HeroSection and EventHighlight components
- Update homepage layout and event detail pages
- Adjust Tailwind config and global styles

frontend/src/app/(public)/components/NextEventSectionWrapper.tsx

@@ -0,0 +1,21 @@
+'use client';
+
+import { useLanguage } from '@/context/LanguageContext';
+import NextEventSection from './NextEventSection';
+
+export default function NextEventSectionWrapper() {
+  const { t } = useLanguage();
+
+  return (
+    <section className="section-padding bg-white">
+      <div className="container-page">
+        <h2 className="section-title text-center">
+          {t('home.nextEvent.title')}
+        </h2>
+        <div className="mt-12 max-w-3xl mx-auto">
+          <NextEventSection />
+        </div>
+      </div>
+    </section>
+  );
+}