- Extend tripType state to include 'multi-city' option alongside 'one-way' and 'round-trip'
- Add third radio button for multi-city selection with test ID trip-type-multicity
- Update test IDs for existing radio buttons: trip-type-oneway (was trip-type-one-way) and trip-type-round (was trip-type-round-trip)
- Show additional-segments container only when multi-city is selected
- Display example segment with departure→arrival route and date
- Add comprehensive SCSS styling for multi-city UI elements:
- .route-filter__multicity-message for instruction text
- .route-filter__additional-segments for container
- .route-filter__segment for individual segment display
- .route-filter__segment-label, route, and date styles
- handleSearch callback already passes all tripType options including new 'multi-city'
- Maintains existing one-way and round-trip functionality unchanged
gnezim
afc81cab3b