using UnityEngine;
using UnityEngine.UIElements;
using System.Collections.Generic;
using System.Linq;

/// <summary>
/// UI Controller for the Travel System with route selection and comparison
/// </summary>
public class TravelUI : MonoBehaviour
{
    [Header("UI Document")]
    public UIDocument uiDocument;

    [Header("UI Files")]
    public VisualTreeAsset travelUIAsset;
    public StyleSheet travelUIStyleSheet;

    // UI Elements
    private VisualElement travelContainer;
    private VisualElement travelPanel;
    private Label distanceLabel;
    private Label timeLabel;
    private Label specialCostsLabel;
    private Button startTravelButton;
    private Button cancelTravelButton;
    private VisualElement routeList;

    // Travel data
    private Vector2Int currentDestination;
    private List<TravelRoute> availableRoutes = new List<TravelRoute>();
    private TravelRoute selectedRoute;

    // State
    private bool isUIVisible = false;

    void Awake()
    {
        // Find UI Document if not assigned
        if (uiDocument == null)
        {
            uiDocument = GetComponent<UIDocument>();
        }

        // Load UXML asset from Resources if not assigned
        if (travelUIAsset == null)
        {
            travelUIAsset = Resources.Load<VisualTreeAsset>("UI/Map/TravelUI");
            if (travelUIAsset == null)
            {
                // Try alternative path
                travelUIAsset = Resources.Load<VisualTreeAsset>("TravelUI");
            }
        }

        // Load USS style sheet if not assigned
        if (travelUIStyleSheet == null)
        {
            travelUIStyleSheet = Resources.Load<StyleSheet>("UI/Map/TravelUI");
            if (travelUIStyleSheet == null)
            {
                // Try alternative path
                travelUIStyleSheet = Resources.Load<StyleSheet>("TravelUI");
            }
        }
    }

    void Start()
    {
        SetupUI();
    }

    void SetupUI()
    {
        if (uiDocument == null)
        {
            Debug.LogError("TravelUI: UIDocument not found!");
            return;
        }

        var root = uiDocument.rootVisualElement;

        // Load and instantiate the UXML if we have the asset
        if (travelUIAsset != null)
        {
            // Clear existing content
            root.Clear();

            // Instantiate from UXML
            travelUIAsset.CloneTree(root);

            // Add style sheet
            if (travelUIStyleSheet != null)
            {
                root.styleSheets.Add(travelUIStyleSheet);
            }
            else
            {
                Debug.LogWarning("TravelUI: No style sheet found");
            }
        }
        else
        {
            Debug.LogWarning("TravelUI: No UXML asset found");
        }

        // Find UI elements
        travelContainer = root.Q<VisualElement>("TravelContainer");
        travelPanel = root.Q<VisualElement>("TravelPanel");
        distanceLabel = root.Q<Label>("DistanceLabel");
        timeLabel = root.Q<Label>("TimeLabel");
        specialCostsLabel = root.Q<Label>("SpecialCostsLabel");
        startTravelButton = root.Q<Button>("StartTravelButton");
        cancelTravelButton = root.Q<Button>("CancelTravelButton");

        // Find draggable header and close button
        var travelHeader = root.Q<VisualElement>("TravelHeader");
        var closeButton = root.Q<Button>("CloseButton");

        // Find or create route list container
        routeList = root.Q<VisualElement>("RouteList");
        if (routeList == null)
        {
            Debug.Log("🔨 TravelUI: RouteList not found, creating it...");
            // Create route list if it doesn't exist
            var routeOptions = root.Q<VisualElement>("RouteOptions");
            if (routeOptions != null)
            {
                routeList = new VisualElement();
                routeList.name = "RouteList";
                routeList.AddToClassList("route-list");
                routeOptions.Add(routeList);
                Debug.Log("✅ TravelUI: RouteList created and added to RouteOptions");
            }
            else
            {
                Debug.LogWarning("⚠️ TravelUI: RouteOptions container not found, cannot create RouteList");
            }
        }
        else
        {
            Debug.Log("RouteList found");
        }

        // Setup dragging functionality
        if (travelHeader != null && travelPanel != null)
        {
            SetupDragFunctionality(travelHeader, travelPanel);
        }

        // Setup close button
        if (closeButton != null)
        {
            closeButton.clicked += OnCancelTravelClicked;
        }

        // Setup button callbacks
        if (startTravelButton != null)
        {
            startTravelButton.clicked += OnStartTravelClicked;
        }

        if (cancelTravelButton != null)
        {
            cancelTravelButton.clicked += OnCancelTravelClicked;
        }

        // REMOVE THIS DUPLICATE HANDLER - it's conflicting with SetupClickBlocking()
        // travelContainer.RegisterCallback<ClickEvent>(evt =>
        // {
        //     // Allow clicks on buttons and other interactive elements
        //     if (evt.target is Button || evt.target.GetType().Name.Contains("Button"))
        //     {
        //         Debug.Log("🔓 TravelUI: Allowing click on button element");
        //         return; // Don't stop propagation for buttons
        //     }
        //
        //     Debug.Log("🛡️ TravelUI: TravelContainer blocking click - stopping propagation");
        //     evt.StopPropagation(); // Prevent clicks from passing through to the map
        // });

        // Hide UI initially
        HideTravelPanel();

        Debug.Log("TravelUI initialized successfully");
    }

    /// <summary>
    /// DEBUG: Force show the TravelUI for testing
    /// </summary>
    [ContextMenu("DEBUG: Force Show TravelUI")]
    public void DebugForceShowTravelUI()
    {
        Debug.Log("🧪 TravelUI: DEBUG Force showing TravelUI...");

        // CHECK FOR DUPLICATE TEAM MARKERS
        var allTeamMarkers = GameObject.FindObjectsByType<GameObject>(FindObjectsSortMode.None).Where(g => g.name == "TeamMarker").ToArray();
        Debug.Log($"🔍 Found {allTeamMarkers.Length} TeamMarker objects:");
        for (int i = 0; i < allTeamMarkers.Length; i++)
        {
            var marker = allTeamMarkers[i];
            bool hasSphere = marker.GetComponentInChildren<Transform>().name.Contains("Sphere");
            Debug.Log($"   {i + 1}. {marker.name} at {marker.transform.position} - Has Sphere: {hasSphere}");
        }

        // Prevent multiple instances
        if (isUIVisible)
        {
            Debug.Log("⚠️ TravelUI: Already visible, ignoring duplicate show request");
            return;
        }

        // Create some dummy routes for testing with proper initialization
        var dummyRoutes = new List<TravelRoute>
        {
            new TravelRoute
            {
                routeType = RouteType.RoadPreferred,
                estimatedTime = 10.5f,
                totalDistance = 25.0f,
                totalCost = 50,
                specialCosts = new Dictionary<string, int> { { "Ferry", 10 } },
                path = new List<Vector2Int> { new Vector2Int(50, 50), new Vector2Int(75, 75), new Vector2Int(100, 100) }
            },
            new TravelRoute
            {
                routeType = RouteType.Standard,
                estimatedTime = 12.0f,
                totalDistance = 22.0f,
                totalCost = 45,
                specialCosts = new Dictionary<string, int>(),
                path = new List<Vector2Int> { new Vector2Int(50, 50), new Vector2Int(100, 100) }
            },
            new TravelRoute
            {
                routeType = RouteType.Special,
                estimatedTime = 8.0f,
                totalDistance = 30.0f,
                totalCost = 35,
                specialCosts = new Dictionary<string, int> { { "Tunnel Torch", 2 }, { "Mountain Guide", 15 } },
                path = new List<Vector2Int> { new Vector2Int(50, 50), new Vector2Int(60, 80), new Vector2Int(100, 100) }
            }
        };

        ShowTravelUI(new Vector2Int(100, 100), dummyRoutes);
    }

    /// <summary>
    /// Sets up click blocking for the travel UI to prevent click-through
    /// </summary>
    private void SetupClickBlocking()
    {
        // Using coordinate-based blocking only - no visual overlay needed
        // The IsPointWithinUI() method will handle blocking map clicks
        // UI elements will work normally without any overlay interference

        Debug.Log("🔧 TravelUI: Using coordinate-based click blocking only - no visual overlay needed");
    }

    /// <summary>
    /// Shows the travel UI with route options - UPDATED
    /// </summary>
    public void ShowTravelUI(Vector2Int destination, List<TravelRoute> routes)
    {
        Debug.Log($"🚀 TravelUI: ShowTravelUI called with destination {destination} and {routes.Count} routes");

        // If UI is already visible, update with new routes instead of ignoring
        if (isUIVisible)
        {
            Debug.Log("🔄 TravelUI: Already visible, updating with new routes");
            UpdateRoutesAndRefreshUI(destination, routes);
            return;
        }

        if (travelContainer == null)
        {
            Debug.LogWarning("⚠️ TravelUI: Container not found, attempting to setup UI");
            SetupUI();
            if (travelContainer == null)
            {
                Debug.LogError("❌ TravelUI: Failed to setup UI - travelContainer still null");
                return;
            }
            Debug.Log("✅ TravelUI: Successfully setup UI after retry");
        }

        currentDestination = destination;
        availableRoutes = new List<TravelRoute>(routes);

        // Select the fastest route by default
        if (availableRoutes.Count > 0)
        {
            selectedRoute = availableRoutes.OrderBy(r => r.estimatedTime).First();
        }
        else
        {
            Debug.LogWarning("TravelUI: No routes available!");
        }

        // Update UI content
        UpdateTravelInfo();
        PopulateRouteList();

        // Show the UI
        travelContainer.style.display = DisplayStyle.Flex;
        isUIVisible = true;

        // Ensure travel UI doesn't overlap with team overview panel
        EnsureNoTeamOverviewOverlap();

        // Set up click blocking when showing the UI
        SetupClickBlocking();

        // Force a layout update to ensure everything is positioned correctly
        travelContainer.MarkDirtyRepaint();

        Debug.Log($"📋 TravelUI: Showing UI with {routes.Count} routes to {destination}");
        Debug.Log($"🔒 TravelUI: UI panel now blocks clicks within its bounds - isUIVisible: {isUIVisible}");
        Debug.Log($"🔍 TravelUI: Container display style: {travelContainer.style.display}");
    }

    /// <summary>
    /// Hides the travel panel - UPDATED
    /// </summary>
    public void HideTravelPanel()
    {
        if (travelContainer != null)
        {
            travelContainer.style.display = DisplayStyle.None;
        }

        isUIVisible = false;

        // Clear route visualization when hiding
        var travelSystem = FindFirstObjectByType<TeamTravelSystem>();
        if (travelSystem != null)
        {
            try
            {
                // Try to clear route visualization
                var clearMethod = travelSystem.GetType().GetMethod("ClearRouteVisualization");
                if (clearMethod != null)
                {
                    clearMethod.Invoke(travelSystem, null);
                    Debug.Log("✅ TravelUI: Cleared route visualization");
                }
            }
            catch (System.Exception e)
            {
                Debug.LogWarning($"⚠️ TravelUI: Failed to clear route visualization: {e.Message}");
            }
        }

        Debug.Log("👻 TravelUI: Panel hidden");
        Debug.Log($"🔓 TravelUI: Map clicks now enabled outside panel - isUIVisible: {isUIVisible}");
    }

    /// <summary>
    /// Updates the UI with new routes and forces a complete refresh
    /// </summary>
    public void UpdateRoutesAndRefreshUI(Vector2Int destination, List<TravelRoute> routes)
    {
        Debug.Log($"🔄 TravelUI: UpdateRoutesAndRefreshUI called with {routes.Count} routes");

        // Update the route data
        currentDestination = destination;
        availableRoutes = new List<TravelRoute>(routes);

        // Select the fastest route by default
        if (availableRoutes.Count > 0)
        {
            selectedRoute = availableRoutes.OrderBy(r => r.estimatedTime).First();
            Debug.Log($"🎯 TravelUI: Updated to new default route: {selectedRoute.routeType}");
        }
        else
        {
            Debug.LogWarning("⚠️ TravelUI: No routes available in update!");
            selectedRoute = null;
        }

        // Force a complete UI refresh
        Debug.Log("🔄 TravelUI: Updating travel info after route refresh...");
        UpdateTravelInfo();

        Debug.Log("📋 TravelUI: Repopulating route list...");
        PopulateRouteList();

        // Force the entire container to repaint
        if (travelContainer != null)
        {
            travelContainer.MarkDirtyRepaint();
            Debug.Log("🎨 TravelUI: Forced container repaint after route update");
        }

        Debug.Log($"✅ TravelUI: UI refreshed with {routes.Count} updated routes");
    }

    /// <summary>
    /// DEBUG: Force hide the TravelUI for testing
    /// </summary>
    [ContextMenu("DEBUG: Force Hide TravelUI")]
    public void DebugForceHideTravelUI()
    {
        Debug.Log("🧪 TravelUI: DEBUG Force hiding TravelUI...");

        // Hide UI
        HideTravelPanel();
    }

    /// <summary>
    /// DEBUG: Test manual label updates
    /// </summary>
    [ContextMenu("DEBUG: Test Label Updates")]
    public void DebugTestLabelUpdates()
    {
        Debug.Log("🧪 TravelUI: DEBUG Testing label updates...");

        if (distanceLabel != null)
        {
            distanceLabel.text = $"Distance: {UnityEngine.Random.Range(10f, 100f):F1} leagues [DEBUG]";
            distanceLabel.MarkDirtyRepaint(); // Force UI refresh
            Debug.Log($"✅ TravelUI: Distance updated to: {distanceLabel.text}");
        }
        else
        {
            Debug.LogError("❌ TravelUI: distanceLabel is null!");
        }

        if (timeLabel != null)
        {
            timeLabel.text = $"Travel Time: {UnityEngine.Random.Range(5f, 50f):F1} hours [DEBUG]";
            timeLabel.MarkDirtyRepaint(); // Force UI refresh
            Debug.Log($"✅ TravelUI: Time updated to: {timeLabel.text}");
        }
        else
        {
            Debug.LogError("❌ TravelUI: timeLabel is null!");
        }

        if (specialCostsLabel != null)
        {
            specialCostsLabel.text = $"Special Costs: {UnityEngine.Random.Range(0, 100)} gold [DEBUG]";
            specialCostsLabel.MarkDirtyRepaint(); // Force UI refresh
            Debug.Log($"✅ TravelUI: Special costs updated to: {specialCostsLabel.text}");
        }
        else
        {
            Debug.LogError("❌ TravelUI: specialCostsLabel is null!");
        }

        // Force the entire container to refresh
        if (travelContainer != null)
        {
            travelContainer.MarkDirtyRepaint();
        }
    }

    /// <summary>
    /// DEBUG: Test route selection programmatically
    /// </summary>
    [ContextMenu("DEBUG: Test Route Selection")]
    public void DebugTestRouteSelection()
    {
        Debug.Log("🧪 TravelUI: DEBUG Testing route selection...");

        if (availableRoutes == null || availableRoutes.Count == 0)
        {
            Debug.LogError("❌ TravelUI: No available routes for testing!");
            return;
        }

        // Try to select each route programmatically
        for (int i = 0; i < availableRoutes.Count; i++)
        {
            var route = availableRoutes[i];
            Debug.Log($"🔄 TravelUI: Testing route {i + 1}: {route.routeType}");

            // Find the corresponding UI element
            var routeOptions = routeList.Children().ToList();
            if (i < routeOptions.Count)
            {
                var routeElement = routeOptions[i];
                Debug.Log($"🎯 TravelUI: Simulating click on route element {i}");
                SelectRoute(route, routeElement);

                // Wait a bit and show results
                Debug.Log($"📊 TravelUI: After selecting {route.routeType}:");
                Debug.Log($"   Distance: {distanceLabel?.text ?? "NULL"}");
                Debug.Log($"   Time: {timeLabel?.text ?? "NULL"}");
                Debug.Log($"   Special: {specialCostsLabel?.text ?? "NULL"}");
            }
            else
            {
                Debug.LogError($"❌ TravelUI: Route element {i} not found in UI!");
            }
        }
    }

    /// <summary>
    /// Updates travel information display
    /// </summary>
    private void UpdateTravelInfo()
    {
        Debug.Log($"🔄 TravelUI.UpdateTravelInfo called - selectedRoute: {selectedRoute?.routeType}");

        if (selectedRoute == null)
        {
            Debug.LogWarning("⚠️ TravelUI.UpdateTravelInfo: selectedRoute is null");
            return;
        }

        Debug.Log($"📊 TravelUI.UpdateTravelInfo: Updating with route {selectedRoute.routeType} - Time: {selectedRoute.estimatedTime:F1}h, Distance: {selectedRoute.totalDistance:F1}, SpecialCosts: {selectedRoute.specialCosts?.Count ?? 0}");

        if (distanceLabel != null)
        {
            distanceLabel.text = $"Distance: {selectedRoute.totalDistance:F1} leagues";
            distanceLabel.MarkDirtyRepaint(); // Force UI refresh
            Debug.Log($"✅ TravelUI: Updated distance to: {distanceLabel.text}");
        }
        else
        {
            Debug.LogWarning("⚠️ TravelUI.UpdateTravelInfo: distanceLabel is null");
        }

        if (timeLabel != null)
        {
            timeLabel.text = $"Travel Time: {selectedRoute.estimatedTime:F1} hours";
            timeLabel.MarkDirtyRepaint(); // Force UI refresh
            Debug.Log($"✅ TravelUI: Updated time to: {timeLabel.text}");
        }
        else
        {
            Debug.LogWarning("⚠️ TravelUI.UpdateTravelInfo: timeLabel is null");
        }

        if (specialCostsLabel != null)
        {
            if (selectedRoute.specialCosts != null && selectedRoute.specialCosts.Count > 0)
            {
                var costs = selectedRoute.specialCosts.Select(kvp => $"{kvp.Key}: {kvp.Value}");
                specialCostsLabel.text = $"Special Costs: {string.Join(", ", costs)}";
                specialCostsLabel.style.display = DisplayStyle.Flex;
                specialCostsLabel.MarkDirtyRepaint(); // Force UI refresh
                Debug.Log($"✅ TravelUI: Updated special costs to: {specialCostsLabel.text}");
            }
            else
            {
                specialCostsLabel.text = "Special Costs: None";
                specialCostsLabel.style.display = DisplayStyle.Flex;
                specialCostsLabel.MarkDirtyRepaint(); // Force UI refresh
                Debug.Log($"✅ TravelUI: Updated special costs to: None");
            }
        }
        else
        {
            Debug.LogWarning("⚠️ TravelUI.UpdateTravelInfo: specialCostsLabel is null");
        }

        // Force the entire container to refresh
        if (travelContainer != null)
        {
            travelContainer.MarkDirtyRepaint();
        }

        Debug.Log("✅ TravelUI.UpdateTravelInfo: Complete");
    }

    /// <summary>
    /// Populates the route selection list
    /// </summary>
    private void PopulateRouteList()
    {
        if (routeList == null) return;

        // Clear existing route options
        routeList.Clear();

        // Sort routes by estimated time (fastest first)
        var sortedRoutes = availableRoutes.OrderBy(r => r.estimatedTime).ToList();

        for (int i = 0; i < sortedRoutes.Count; i++)
        {
            var route = sortedRoutes[i];
            var routeElement = CreateRouteOptionElement(route, i == 0); // First route is selected by default
            routeList.Add(routeElement);
        }

        Debug.Log($"📊 TravelUI: Populated route list with {sortedRoutes.Count} options");
    }

    /// <summary>
    /// Creates a clickable route option element
    /// </summary>
    private VisualElement CreateRouteOptionElement(TravelRoute route, bool isSelected)
    {
        var routeOption = new VisualElement();
        routeOption.AddToClassList("route-option");
        if (isSelected)
        {
            routeOption.AddToClassList("route-selected");
            selectedRoute = route;
        }

        // Color indicator
        var colorIndicator = new VisualElement();
        colorIndicator.AddToClassList("route-color-indicator");

        // Set color based on route type
        Color routeColor = GetRouteDisplayColor(route);
        colorIndicator.style.backgroundColor = routeColor;

        routeOption.Add(colorIndicator);

        // Route details container
        var routeDetails = new VisualElement();
        routeDetails.AddToClassList("route-details");

        // Route type and main info
        var routeHeader = new Label($"{GetRouteDisplayName(route)}");
        routeHeader.AddToClassList("route-header");
        routeDetails.Add(routeHeader);

        // Time info
        var routeTime = new Label($"Time: {route.estimatedTime:F1}h");
        routeTime.AddToClassList("route-time");
        routeDetails.Add(routeTime);

        // Resource costs (gold, torches, etc.)
        var resourceCosts = GetResourceCosts(route);
        if (resourceCosts.Count > 0)
        {
            var costText = string.Join(", ", resourceCosts.Select(kvp => $"{kvp.Value} {kvp.Key}"));
            var routeCost = new Label($"Resources: {costText}");
            routeCost.AddToClassList("route-cost");
            routeDetails.Add(routeCost);
        }
        else
        {
            var routeCost = new Label("Resources: None");
            routeCost.AddToClassList("route-cost");
            routeDetails.Add(routeCost);
        }

        // Special costs if any
        if (route.specialCosts.Count > 0)
        {
            var specialText = string.Join(", ", route.specialCosts.Select(kvp => $"{kvp.Key}: {kvp.Value}"));
            var specialLabel = new Label($"Special: {specialText}");
            specialLabel.AddToClassList("route-special");
            routeDetails.Add(specialLabel);
        }

        // Add debug information showing path composition
        var debugInfo = GetRouteDebugInfo(route);
        if (!string.IsNullOrEmpty(debugInfo))
        {
            var debugLabel = new Label(debugInfo);
            debugLabel.AddToClassList("route-debug");
            routeDetails.Add(debugLabel);
        }

        routeOption.Add(routeDetails);

        // Click handler with enhanced debugging
        routeOption.RegisterCallback<ClickEvent>(evt =>
        {
            Debug.Log($"🖱️ TravelUI: Route clicked! Event target: {evt.target}, Route: {route.routeType}");
            SelectRoute(route, routeOption);
            evt.StopPropagation(); // Prevent event bubbling
        });

        // Also add mouse events for debugging
        routeOption.RegisterCallback<MouseEnterEvent>(evt =>
        {
            Debug.Log($"🐭 TravelUI: Mouse entered route: {route.routeType}");
        });

        return routeOption;
    }

    /// <summary>
    /// Handles route selection
    /// </summary>
    private void SelectRoute(TravelRoute route, VisualElement clickedElement)
    {
        Debug.Log($"🎯 TravelUI: SelectRoute called for {route.routeType} - Time: {route.estimatedTime:F1}h, Distance: {route.totalDistance:F1}");
        Debug.Log($"🔍 TravelUI: SelectRoute - Previous selectedRoute: {selectedRoute?.routeType}");

        selectedRoute = route;

        // Update visual selection
        var allRouteOptions = routeList.Children();
        Debug.Log($"📋 TravelUI: SelectRoute - Found {allRouteOptions.Count()} route options in list");

        foreach (var option in allRouteOptions)
        {
            option.RemoveFromClassList("route-selected");
        }
        clickedElement.AddToClassList("route-selected");
        Debug.Log($"✅ TravelUI: SelectRoute - Visual selection updated for {route.routeType}");

        Debug.Log($"🔄 TravelUI: About to call UpdateTravelInfo for {route.routeType}");

        // Update travel info
        UpdateTravelInfo();

        // Notify the travel system to highlight this route - FIX THIS CALL
        var travelSystem = FindFirstObjectByType<TeamTravelSystem>();
        if (travelSystem != null)
        {
            // Use the correct method name from your travel system
            try
            {
                travelSystem.VisualizeSpecificRoute(route);
                Debug.Log($"✅ TravelUI: Successfully called VisualizeSpecificRoute for {route.routeType}");
            }
            catch (System.Exception e)
            {
                Debug.LogWarning($"⚠️ TravelUI: Failed to visualize route: {e.Message}");
                // Try alternative method names
                var method = travelSystem.GetType().GetMethod("HighlightRoute");
                if (method != null)
                {
                    method.Invoke(travelSystem, new object[] { route });
                    Debug.Log($"✅ TravelUI: Used HighlightRoute instead");
                }
            }
        }
        else
        {
            Debug.LogWarning("⚠️ TravelUI: TeamTravelSystem not found for route visualization");
        }

        Debug.Log($"🎯 TravelUI: Selected {route.routeType} route - SelectRoute complete");
    }

    /// <summary>
    /// Gets display color for route based on type (GPS-style)
    /// </summary>
    private Color GetRouteDisplayColor(TravelRoute route)
    {
        // Match colors from TeamTravelSystem GPS-style
        switch (route.routeType)
        {
            case RouteType.Standard:
                return Color.blue; // Shortest route
            case RouteType.RoadPreferred:
                return Color.green; // Fastest route
            case RouteType.Special:
                return Color.yellow; // Cheapest route
            default:
                return Color.blue;
        }
    }

    /// <summary>
    /// Gets GPS-style display name for route type
    /// </summary>
    private string GetRouteDisplayName(TravelRoute route)
    {
        switch (route.routeType)
        {
            case RouteType.Standard:
                return "Shortest Route";
            case RouteType.RoadPreferred:
                return "Fastest Route";
            case RouteType.Special:
                return "Cheapest Route";
            default:
                return "Unknown Route";
        }
    }

    /// <summary>
    /// Handles start travel button click
    /// </summary>
    private void OnStartTravelClicked()
    {
        if (selectedRoute == null)
        {
            Debug.LogWarning("⚠️ TravelUI: No route selected for travel");
            return;
        }

        Debug.Log($"🚶 TravelUI: Starting travel with {selectedRoute.routeType} route");

        // Start travel through the travel system
        var travelSystem = TeamTravelSystem.Instance;
        if (travelSystem != null)
        {
            travelSystem.StartTravel(selectedRoute);
        }

        // Hide UI
        HideTravelPanel();
    }

    /// <summary>
    /// Handles cancel button click
    /// </summary>
    private void OnCancelTravelClicked()
    {
        Debug.Log("❌ TravelUI: Travel cancelled by user");

        // Cancel travel planning
        var travelSystem = TeamTravelSystem.Instance;
        if (travelSystem != null)
        {
            travelSystem.CancelTravelPlanning();
        }

        // Hide UI
        HideTravelPanel();
    }

    /// <summary>
    /// Updates UI for a selected route (called by TeamTravelSystem via reflection)
    /// </summary>
    public void UpdateUIForSelectedRoute(TravelRoute route)
    {

        if (!isUIVisible)
        {
            return;
        }

        selectedRoute = route;
        UpdateTravelInfo();

        // Update visual selection in route list
        if (routeList != null)
        {
            var routeOptions = routeList.Children().ToList();
            for (int i = 0; i < routeOptions.Count && i < availableRoutes.Count; i++)
            {
                var routeOption = routeOptions[i];
                var routeData = availableRoutes.OrderBy(r => r.estimatedTime).ToList()[i];

                if (routeData == route)
                {
                    routeOption.AddToClassList("route-selected");
                    Debug.Log($"🎯 TravelUI.UpdateUIForSelectedRoute: Visual selection updated for route {i}");
                }
                else
                {
                    routeOption.RemoveFromClassList("route-selected");
                }
            }
        }
        else
        {
            Debug.LogWarning("⚠️ TravelUI.UpdateUIForSelectedRoute: routeList is null");
        }

        Debug.Log($"🔄 TravelUI: Updated UI for {route.routeType} route");
    }

    /// <summary>
    /// Checks if UI is blocking input (called by TeamTravelSystem via reflection)
    /// </summary>
    public bool IsUIBlocking()
    {
        return isUIVisible;
    }

    /// <summary>
    /// Check if a screen position (in Unity's screen coordinates) is within the UI panel
    /// </summary>
    public bool IsPointWithinUI(Vector2 screenPosition)
    {
        if (!isUIVisible || travelPanel == null)
        {
            return false;
        }

        // Convert screen position to panel-relative position
        Vector2 panelPosition = RuntimePanelUtils.ScreenToPanel(travelPanel.panel, screenPosition);

        // Check if the position is within the panel bounds
        bool withinBounds = travelPanel.worldBound.Contains(panelPosition);

        return withinBounds;
    }

    /// <summary>
    /// Public getters for external access
    /// </summary>
    public bool IsVisible => isUIVisible;
    public TravelRoute GetSelectedRoute() => selectedRoute;

    /// <summary>
    /// Forces the UI to refresh with new route data - called externally when routes are recalculated
    /// </summary>
    public void RefreshWithNewRoutes(List<TravelRoute> routes)
    {
        Debug.Log($"🔄 TravelUI: RefreshWithNewRoutes called externally with {routes.Count} routes");

        if (!isUIVisible)
        {
            Debug.LogWarning("⚠️ TravelUI: RefreshWithNewRoutes called but UI is not visible");
            return;
        }

        UpdateRoutesAndRefreshUI(currentDestination, routes);
    }

    /// <summary>
    /// Sets up drag functionality for the travel panel
    /// </summary>
    private void SetupDragFunctionality(VisualElement dragHandle, VisualElement panelToDrag)
    {
        bool isDragging = false;
        Vector2 startPosition = Vector2.zero;
        Vector2 startMousePosition = Vector2.zero;

        dragHandle.RegisterCallback<MouseDownEvent>(evt =>
        {
            if (evt.button == 0) // Left mouse button
            {
                isDragging = true;
                startPosition = new Vector2(panelToDrag.style.left.value.value, panelToDrag.style.top.value.value);
                startMousePosition = evt.mousePosition;
                dragHandle.CaptureMouse();
                evt.StopPropagation();
            }
        });

        dragHandle.RegisterCallback<MouseMoveEvent>(evt =>
        {
            if (isDragging)
            {
                Vector2 delta = evt.mousePosition - startMousePosition;
                panelToDrag.style.left = startPosition.x + delta.x;
                panelToDrag.style.top = startPosition.y + delta.y;
                evt.StopPropagation();
            }
        });

        dragHandle.RegisterCallback<MouseUpEvent>(evt =>
        {
            if (isDragging)
            {
                isDragging = false;
                dragHandle.ReleaseMouse();
                evt.StopPropagation();
            }
        });
    }

    /// <summary>
    /// Gets debug information about route composition
    /// </summary>
    private string GetRouteDebugInfo(TravelRoute route)
    {
        if (route?.path == null || route.path.Count == 0) return "";

        // Get terrain analysis from TeamTravelSystem
        var travelSystem = TeamTravelSystem.Instance;
        if (travelSystem == null) return "";

        // Count different terrain types in the route
        var terrainCounts = new Dictionary<string, int>();

        // This is a simplified analysis - in a full implementation, 
        // you'd access the actual map data through the travel system
        float avgCostPerTile = route.totalCost / route.path.Count;

        string preference = "";
        switch (route.routeType)
        {
            case RouteType.RoadPreferred:
                preference = "Prefers roads";
                break;
            case RouteType.Special:
                preference = "Uses ferries/tunnels";
                break;
            default:
                preference = "Cheapest path";
                break;
        }

        return $"{preference} • Avg: {avgCostPerTile:F1}/tile";
    }

    /// <summary>
    /// Gets resource costs for a route (gold, torches, etc.)
    /// </summary>
    private Dictionary<string, int> GetResourceCosts(TravelRoute route)
    {
        var costs = new Dictionary<string, int>();

        // Add special costs from the route (with null safety)
        if (route?.specialCosts != null)
        {
            foreach (var specialCost in route.specialCosts)
            {
                switch (specialCost.Key)
                {
                    case "Ferry":
                    case "Bridge Toll":
                        costs["Gold"] = costs.GetValueOrDefault("Gold", 0) + specialCost.Value;
                        break;
                    case "Tunnel Torch":
                        costs["Torches"] = costs.GetValueOrDefault("Torches", 0) + specialCost.Value;
                        break;
                    case "Mountain Guide":
                        costs["Gold"] = costs.GetValueOrDefault("Gold", 0) + specialCost.Value;
                        break;
                    default:
                        costs[specialCost.Key] = specialCost.Value;
                        break;
                }
            }
        }

        return costs;
    }

    /// <summary>
    /// Ensures the travel UI doesn't overlap with the team overview panel on the right side
    /// </summary>
    private void EnsureNoTeamOverviewOverlap()
    {
        if (travelContainer == null) return;

        // Check if team overview exists
        var teamOverview = FindFirstObjectByType<TeamOverviewController>();
        if (teamOverview != null)
        {
            // The CSS already centers the travel UI, but we can add extra margin if needed
            // This is a safeguard to ensure proper spacing
            var panel = travelContainer.Q("TravelPanel");
            if (panel != null)
            {
                // Add some extra margin to avoid any potential overlap
                panel.style.marginRight = 320; // Team overview width + padding
            }
        }
    }

}