Backpacking Trip Itinerary Planner

Plan a comprehensive multi-day backpacking trip itinerary.

Trip Parameters:
- Destination/Trail: {{destination}}
- Trip Duration: {{duration}}
- Number of Hikers: {{group_size}}
- Experience Level: {{experience}}
- Daily Mileage Preference: {{daily_miles}}
- Total Available Days: {{total_days}}

Preferences:
- Campsite Type: {{campsite_preference}}
- Water Source Requirements: {{water_needs}}
- Scenery Priorities: {{scenery}}
- Difficulty Tolerance: {{difficulty}}
- Permit Flexibility: {{permit_flexibility}}

Please create a detailed itinerary including:

1. Trip Overview
- Total distance and elevation
- Difficulty assessment
- Best time to go
- Permit requirements
- Transportation logistics

2. Day-by-Day Breakdown
For each day:
- Starting point and destination
- Distance and elevation profile
- Estimated hiking time
- Water sources along route
- Lunch spot recommendations
- Campsite details and backup options
- Notable landmarks and views
- Difficulty notes

3. Gear Checklist
- Backpacking essentials
- Trip-specific items
- Group gear distribution
- Weight optimization tips

4. Food Planning
- Calorie requirements
- Meal suggestions per day
- Resupply options
- Bear canister/hang requirements

5. Logistics
- Trailhead transportation
- Parking information
- Shuttle services
- Emergency exit points

6. Contingency Plans
- Bad weather alternatives
- Shortened itinerary option
- Extended itinerary option
- Bail-out points