Design a minimalist, professional mobile app for motorcycle enthusiasts to discover track days and receive real‑time updates.

The interface should feature a clean flat design, with intuitive navigation for event discovery, registration, and live notifications. Key functionalities include a live track view, real‑time speed and lap time tracking, and alerts for crashes, weather changes, and announcements during full‑day track events.

Some concepts:
- Organization: a company that runs a track day and. has full ownership of a physical race track on a certain day.
- Track day: A full-day event that riders pay an organization to join. They bring their motorcycle to a physical track and do laps.
- Track: a physical race track

There are often multiple organizations in a given area, and riders will often go to track days hosted by more than organization.

Key screens:
- Home screen: a collection of joined & upcoming track days. Can search for new track days and organizations to join. Primary focus is to see track days of the organizations that a user cares about. Secondary focus is content discovery; new organizations & tracks.
- Track day screen: A live-view of a given track day. Shows the track layout, current status, schedule, lap times, top speeds, etc.
- Settings screen: manage settings like account settings, notifications, location permissions, etc.