0x-Shadow/Barber-shop-web — reverse-engineered prompt

Build me a polished barbershop website and booking app for a premium men’s grooming studio in Athens. I want a nice landing page with a hero section, about, services, gallery, testimonials, and contact info. Then add a simple booking experience where people can choose a service, pick a date and time, and book an appointment. It should also have a mobile friendly booking view at /app where customers can make a booking and look up their appointment.

I also want a password protected admin area at /admin where the shop can manage bookings and block off times. That should include blocking whole days, single time slots, and repeating windows like lunch breaks or Sundays. Please make it work as an installable PWA with offline support, and make sure it can also be wrapped as an Android app. Use local storage by default, but keep it ready so Firebase sync can be turned on later if needed. Set up the admin password hash in config, and look up current docs online if you need to.