feat: default language Swedish, modern mobile navigation menu, mobile optimizations & translations, shorten mobile hero banner to 4s

- Set 'sv' as default in LanguageProvider + layout (users can switch to 'en')
- Completely revamped mobile drawer menu: slide animation (framer-motion), icons, active states with high-contrast text, large touch targets, better tap feedback
- Horizontal snap-scrolling category filters on mobile (homepage + /menu) for thumb-friendly UX
- Added active:scale / touch-manipulation + press states across cards, buttons, filters for better mobile tap visibility/feedback
- Updated translations for menu page, locations, footer, experience (Swedish-first)
- Made locations + footer language-aware
- Trimmed banner_mobile.mp4 (raw + re-optimized) from 6s to 4s for faster load on mobile
- Reordered languages so Svenska appears first in switcher
- .gitignore already protects developer_instructions.txt (previous commit)

lib/language-context.tsx

@@ -13,7 +13,7 @@ const LanguageContext = createContext<LanguageContextType | undefined>(undefined
 const LANGUAGE_STORAGE_KEY = 'shahi-kitchen-language';
 
 export function LanguageProvider({ children }: { children: ReactNode }) {
-  const [language, setLanguageState] = useState<Language>('en');
+  const [language, setLanguageState] = useState<Language>('sv');
 
   // Load language from localStorage on mount
   useEffect(() => {
@@ -21,11 +21,13 @@ export function LanguageProvider({ children }: { children: ReactNode }) {
     if (savedLang && ['en', 'sv', 'hi', 'ur'].includes(savedLang)) {
       setLanguageState(savedLang);
     } else {
-      // Optional: Try to detect browser language
+      // Default to Swedish (sv) for the Swedish restaurant audience.
+      // Only auto-switch for strong browser matches on other supported languages.
       const browserLang = navigator.language.toLowerCase();
       if (browserLang.startsWith('sv')) setLanguageState('sv');
       else if (browserLang.startsWith('hi')) setLanguageState('hi');
       else if (browserLang.startsWith('ur')) setLanguageState('ur');
+      // else stay 'sv' (no 'en' override — users can manually switch to English)
     }
   }, []);