Aptello — Service Booking & Appointment Studio (Concept)

Aptello is a commercial concept service discovery and appointment booking studio template engineered for appointment-driven businesses — wellness and aesthetic sanctuaries, somatic recovery clinics, daylight photography studios, and executive advisory practices. Built with Next.js 16.4 (App Router), React 19.3, TypeScript 5.9, and Tailwind CSS 4.3.

Unlike static service landing pages, Aptello features a deterministic client-side scheduling engine that calculates total session length across primary treatments and time-extending add-ons (+15 min, +20 min), blocks past dates and weekly closure days, prevents sessions from exceeding studio closing hours, and checks real-time specialist interval overlaps ([startTime, endTime)) to prevent double-booking.

4-Step Appointment Booking Studio (#booking): Service & add-on selection, practitioner filtering with 60-day conflict-checked time slots, validated client intake with one-click sample autofill, and a sticky Reservation Ledger generating instant reference codes, downloadable RFC 5545 .ics calendar invites, and print-ready receipts (@media print).

Stateful My Bookings Management: Inspect confirmed reservations persisted in localStorage, reschedule into a new conflict-checked window, or cancel to immediately release the slot.

Live Multi-Industry & Theme Customizer Drawer: Switch live between 3 complete industry presets (Wellness & Spa, Daylight Photo Studio, and Executive Advisory), Light & Dark appearance modes, and 8 contrast-calibrated accent palettes.

Verified Accessibility & Quality: Tested with Vitest + React Testing Library unit suites and Playwright E2E + automated @axe-core/playwright WCAG 2.1 AA audits across desktop and mobile viewports.