Hotel Availability (public) — a 30-day availability calendar for website visitors, showing room status with color-coded indicators. No guest data is exposed.
Reception Calendar (staff only) — a private interface for receptionists to manage bookings, with inline forms, no popup windows.

Booking workflow:
Reservations follow a structured lifecycle: Reserved → Check-In → Check-Out. The Check-In button is only active on the exact arrival date. After check-out, the room returns to Available immediately, ready for a new same-day booking.
Key features:

Inline booking forms with Guest Name, Check-in/out dates, Deposit, Final Payment, Total, and Notes
Check-in and Check-out inline forms with editable Notes at every stage
Multi-day reservation support with intelligent date-range detection
Real-time digital clock on all staff interfaces
Backend Bookings view: day-by-day navigation, supervisor read-only
Revenue Reports: Daily, Weekly, Monthly, and Annual tabs with breakdowns by status and room
Settings panel: add/edit/delete rooms, customise the public availability page contact block
CSRF protection on all actions, input validation, prepared SQL statements
Joomla Update System support — update without reinstalling or losing data

No external dependencies. Pure PHP and vanilla JavaScript.