From 601afa88064fb61f044c577530f41aa906d1d8c9 Mon Sep 17 00:00:00 2001
From: Nick Beckley <nick@spotorno.co.uk>
Date: Sat, 20 Jun 2026 18:44:58 +0100
Subject: [PATCH] Implemented the first-pass Location Floor Plans foundation.

---
 PlotLine/Controllers/FloorPlansController.cs  | 133 +++++
 PlotLine/Data/Repositories.cs                 | 103 ++++
 PlotLine/Models/CoreModels.cs                 |  56 +++
 PlotLine/Program.cs                           |   2 +
 PlotLine/Services/CoreServices.cs             | 258 ++++++++++
 PlotLine/Services/ProjectAccessFilter.cs      |   4 +
 PlotLine/Sql/071_LocationFloorPlans.sql       | 453 +++++++++++++++++
 PlotLine/ViewModels/CoreViewModels.cs         |  80 +++
 PlotLine/Views/FloorPlans/Edit.cshtml         | 457 ++++++++++++++++++
 PlotLine/Views/FloorPlans/Index.cshtml        |  79 +++
 .../Views/Shared/_ProjectSectionNav.cshtml    |   1 +
 PlotLine/wwwroot/css/site.css                 | 231 +++++++++
 PlotLine/wwwroot/css/site.min.css             |   2 +-
 13 files changed, 1858 insertions(+), 1 deletion(-)
 create mode 100644 PlotLine/Controllers/FloorPlansController.cs
 create mode 100644 PlotLine/Sql/071_LocationFloorPlans.sql
 create mode 100644 PlotLine/Views/FloorPlans/Edit.cshtml
 create mode 100644 PlotLine/Views/FloorPlans/Index.cshtml

diff --git a/PlotLine/Controllers/FloorPlansController.cs b/PlotLine/Controllers/FloorPlansController.cs
new file mode 100644
index 0000000..47bc007
--- /dev/null
+++ b/PlotLine/Controllers/FloorPlansController.cs
@@ -0,0 +1,133 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using PlotLine.Services;
+using PlotLine.ViewModels;
+
+namespace PlotLine.Controllers;
+
+[Authorize]
+public sealed class FloorPlansController(IFloorPlanService floorPlans) : Controller
+{
+    public async Task<IActionResult> Index(int projectId)
+    {
+        var model = await floorPlans.ListAsync(projectId);
+        return model is null ? NotFound() : View(model);
+    }
+
+    public async Task<IActionResult> Edit(int id)
+    {
+        var model = await floorPlans.GetEditorAsync(id);
+        return model is null ? NotFound() : View(model);
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> Create(FloorPlanEditViewModel model)
+    {
+        if (!ModelState.IsValid)
+        {
+            return RedirectToAction(nameof(Index), new { projectId = model.ProjectID });
+        }
+
+        var floorPlanId = await floorPlans.SavePlanAsync(model);
+        return RedirectToAction(nameof(Edit), new { id = floorPlanId });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> SavePlan(FloorPlanEditViewModel model)
+    {
+        if (!ModelState.IsValid)
+        {
+            var editor = await floorPlans.GetEditorAsync(model.FloorPlanID);
+            if (editor is null)
+            {
+                return NotFound();
+            }
+
+            editor.FloorPlan = model;
+            return View("Edit", editor);
+        }
+
+        var floorPlanId = await floorPlans.SavePlanAsync(model);
+        TempData["FloorPlanMessage"] = "Floor plan saved.";
+        return RedirectToAction(nameof(Edit), new { id = floorPlanId });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> SaveLayout(FloorPlanEditorViewModel model)
+    {
+        try
+        {
+            await floorPlans.SaveLayoutAsync(model);
+            TempData["FloorPlanMessage"] = "Layout saved.";
+        }
+        catch (InvalidOperationException ex)
+        {
+            TempData["FloorPlanError"] = ex.Message;
+        }
+
+        return RedirectToAction(nameof(Edit), new { id = model.FloorPlan.FloorPlanID });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> DeletePlan(int id, int projectId)
+    {
+        await floorPlans.DeletePlanAsync(id);
+        TempData["FloorPlanMessage"] = "Floor plan deleted.";
+        return RedirectToAction(nameof(Index), new { projectId });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> AddFloor(FloorPlanFloorEditViewModel model)
+    {
+        if (ModelState.IsValid)
+        {
+            await floorPlans.SaveFloorAsync(model);
+            TempData["FloorPlanMessage"] = "Floor added.";
+        }
+
+        return RedirectToAction(nameof(Edit), new { id = model.FloorPlanID });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> DeleteFloor(int floorPlanId, int floorPlanFloorId)
+    {
+        await floorPlans.DeleteFloorAsync(floorPlanFloorId);
+        TempData["FloorPlanMessage"] = "Floor deleted.";
+        return RedirectToAction(nameof(Edit), new { id = floorPlanId });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> AddBlock(int floorPlanId, FloorPlanBlockEditViewModel model)
+    {
+        try
+        {
+            if (ModelState.IsValid)
+            {
+                await floorPlans.SaveBlockAsync(model);
+                TempData["FloorPlanMessage"] = "Block added.";
+            }
+        }
+        catch (InvalidOperationException ex)
+        {
+            TempData["FloorPlanError"] = ex.Message;
+        }
+
+        return RedirectToAction(nameof(Edit), new { id = floorPlanId });
+    }
+
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> DeleteBlock(int floorPlanId, int floorPlanBlockId)
+    {
+        await floorPlans.DeleteBlockAsync(floorPlanBlockId);
+        TempData["FloorPlanMessage"] = "Block deleted.";
+        return RedirectToAction(nameof(Edit), new { id = floorPlanId });
+    }
+}
diff --git a/PlotLine/Data/Repositories.cs b/PlotLine/Data/Repositories.cs
index 6408ebe..a0d3407 100644
--- a/PlotLine/Data/Repositories.cs
+++ b/PlotLine/Data/Repositories.cs
@@ -214,6 +214,20 @@ public interface ILocationRepository
     Task<IReadOnlyList<SceneAssetLocation>> ListAssetsByLocationAsync(int locationId);
 }
 
+public interface IFloorPlanRepository
+{
+    Task<IReadOnlyList<FloorPlan>> ListByProjectAsync(int projectId);
+    Task<FloorPlan?> GetAsync(int floorPlanId);
+    Task<(FloorPlan? FloorPlan, IReadOnlyList<FloorPlanFloor> Floors, IReadOnlyList<FloorPlanBlock> Blocks)> GetEditorAsync(int floorPlanId);
+    Task<FloorPlanFloor?> GetFloorAsync(int floorPlanFloorId);
+    Task<int> SavePlanAsync(FloorPlan floorPlan);
+    Task DeletePlanAsync(int floorPlanId);
+    Task<int> SaveFloorAsync(FloorPlanFloor floor);
+    Task DeleteFloorAsync(int floorPlanFloorId);
+    Task<int> SaveBlockAsync(FloorPlanBlock block);
+    Task DeleteBlockAsync(int floorPlanBlockId);
+}
+
 public interface IWarningRepository
 {
     Task<WarningLookupData> GetLookupsAsync();
@@ -522,6 +536,95 @@ public sealed class LocationRepository(ISqlConnectionFactory connectionFactory)
     }
 }
 
+public sealed class FloorPlanRepository(ISqlConnectionFactory connectionFactory) : IFloorPlanRepository
+{
+    public async Task<IReadOnlyList<FloorPlan>> ListByProjectAsync(int projectId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        var rows = await connection.QueryAsync<FloorPlan>("dbo.FloorPlan_ListByProject", new { ProjectID = projectId }, commandType: CommandType.StoredProcedure);
+        return rows.ToList();
+    }
+
+    public async Task<FloorPlan?> GetAsync(int floorPlanId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        return await connection.QuerySingleOrDefaultAsync<FloorPlan>("dbo.FloorPlan_Get", new { FloorPlanID = floorPlanId }, commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task<(FloorPlan? FloorPlan, IReadOnlyList<FloorPlanFloor> Floors, IReadOnlyList<FloorPlanBlock> Blocks)> GetEditorAsync(int floorPlanId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        using var result = await connection.QueryMultipleAsync("dbo.FloorPlan_GetEditor", new { FloorPlanID = floorPlanId }, commandType: CommandType.StoredProcedure);
+        var floorPlan = await result.ReadSingleOrDefaultAsync<FloorPlan>();
+        var floors = (await result.ReadAsync<FloorPlanFloor>()).ToList();
+        var blocks = (await result.ReadAsync<FloorPlanBlock>()).ToList();
+        return (floorPlan, floors, blocks);
+    }
+
+    public async Task<FloorPlanFloor?> GetFloorAsync(int floorPlanFloorId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        return await connection.QuerySingleOrDefaultAsync<FloorPlanFloor>("dbo.FloorPlanFloor_Get", new { FloorPlanFloorID = floorPlanFloorId }, commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task<int> SavePlanAsync(FloorPlan floorPlan)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        return await connection.QuerySingleAsync<int>(
+            "dbo.FloorPlan_Save",
+            new { floorPlan.FloorPlanID, floorPlan.ProjectID, floorPlan.Name, floorPlan.Description },
+            commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task DeletePlanAsync(int floorPlanId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        await connection.ExecuteAsync("dbo.FloorPlan_Delete", new { FloorPlanID = floorPlanId }, commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task<int> SaveFloorAsync(FloorPlanFloor floor)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        return await connection.QuerySingleAsync<int>(
+            "dbo.FloorPlanFloor_Save",
+            new { floor.FloorPlanFloorID, floor.FloorPlanID, floor.Name, floor.SortOrder, floor.GridWidth, floor.GridHeight },
+            commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task DeleteFloorAsync(int floorPlanFloorId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        await connection.ExecuteAsync("dbo.FloorPlanFloor_Delete", new { FloorPlanFloorID = floorPlanFloorId }, commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task<int> SaveBlockAsync(FloorPlanBlock block)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        return await connection.QuerySingleAsync<int>(
+            "dbo.FloorPlanBlock_Save",
+            new
+            {
+                block.FloorPlanBlockID,
+                block.FloorPlanFloorID,
+                block.LocationID,
+                block.X,
+                block.Y,
+                block.WidthCells,
+                block.HeightCells,
+                block.BlockType,
+                block.LabelOverride,
+                block.Notes
+            },
+            commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task DeleteBlockAsync(int floorPlanBlockId)
+    {
+        using var connection = connectionFactory.CreateConnection();
+        await connection.ExecuteAsync("dbo.FloorPlanBlock_Delete", new { FloorPlanBlockID = floorPlanBlockId }, commandType: CommandType.StoredProcedure);
+    }
+}
+
 public sealed class WarningRepository(ISqlConnectionFactory connectionFactory) : IWarningRepository
 {
     public async Task<WarningLookupData> GetLookupsAsync()
diff --git a/PlotLine/Models/CoreModels.cs b/PlotLine/Models/CoreModels.cs
index eb8e2cc..c484d25 100644
--- a/PlotLine/Models/CoreModels.cs
+++ b/PlotLine/Models/CoreModels.cs
@@ -1125,6 +1125,62 @@ public sealed class LocationRelationship
     public bool IsArchived { get; set; }
 }
 
+public static class FloorPlanBlockTypes
+{
+    public const string Room = "Room";
+    public const string Corridor = "Corridor";
+    public const string OpenSpace = "OpenSpace";
+    public const string Exterior = "Exterior";
+    public const string Other = "Other";
+
+    public static readonly IReadOnlyList<string> All = [Room, Corridor, OpenSpace, Exterior, Other];
+
+    public static bool IsValid(string? blockType) => All.Contains(blockType ?? string.Empty, StringComparer.OrdinalIgnoreCase);
+}
+
+public sealed class FloorPlan
+{
+    public int FloorPlanID { get; set; }
+    public int ProjectID { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public DateTime CreatedDate { get; set; }
+    public DateTime? ModifiedDate { get; set; }
+    public int FloorCount { get; set; }
+    public int BlockCount { get; set; }
+}
+
+public sealed class FloorPlanFloor
+{
+    public int FloorPlanFloorID { get; set; }
+    public int FloorPlanID { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public int SortOrder { get; set; }
+    public int GridWidth { get; set; } = 24;
+    public int GridHeight { get; set; } = 16;
+    public DateTime CreatedDate { get; set; }
+    public DateTime? ModifiedDate { get; set; }
+}
+
+public sealed class FloorPlanBlock
+{
+    public int FloorPlanBlockID { get; set; }
+    public int FloorPlanFloorID { get; set; }
+    public int LocationID { get; set; }
+    public string LocationName { get; set; } = string.Empty;
+    public string LocationPath { get; set; } = string.Empty;
+    public int X { get; set; }
+    public int Y { get; set; }
+    public int WidthCells { get; set; } = 1;
+    public int HeightCells { get; set; } = 1;
+    public string BlockType { get; set; } = FloorPlanBlockTypes.Room;
+    public string? LabelOverride { get; set; }
+    public string? Notes { get; set; }
+    public DateTime CreatedDate { get; set; }
+    public DateTime? ModifiedDate { get; set; }
+    public string DisplayLabel => string.IsNullOrWhiteSpace(LabelOverride) ? LocationName : LabelOverride;
+}
+
 public sealed class SceneAssetLocation
 {
     public int SceneAssetLocationID { get; set; }
diff --git a/PlotLine/Program.cs b/PlotLine/Program.cs
index bda7ea3..ae31a18 100644
--- a/PlotLine/Program.cs
+++ b/PlotLine/Program.cs
@@ -106,6 +106,7 @@ public class Program
         builder.Services.AddScoped<IAssetRepository, AssetRepository>();
         builder.Services.AddScoped<ICharacterRepository, CharacterRepository>();
         builder.Services.AddScoped<ILocationRepository, LocationRepository>();
+        builder.Services.AddScoped<IFloorPlanRepository, FloorPlanRepository>();
         builder.Services.AddScoped<IWarningRepository, WarningRepository>();
         builder.Services.AddScoped<IContinuityWarningAcknowledgementRepository, ContinuityWarningAcknowledgementRepository>();
         builder.Services.AddScoped<ISceneDependencyRepository, SceneDependencyRepository>();
@@ -142,6 +143,7 @@ public class Program
         builder.Services.AddScoped<IAssetService, AssetService>();
         builder.Services.AddScoped<ICharacterService, CharacterService>();
         builder.Services.AddScoped<ILocationService, LocationService>();
+        builder.Services.AddScoped<IFloorPlanService, FloorPlanService>();
         builder.Services.AddScoped<IContinuityValidationService, ContinuityValidationService>();
         builder.Services.AddScoped<IAnalyticsService, AnalyticsService>();
         builder.Services.AddScoped<IStoryBibleService, StoryBibleService>();
diff --git a/PlotLine/Services/CoreServices.cs b/PlotLine/Services/CoreServices.cs
index 0beab72..dda5afc 100644
--- a/PlotLine/Services/CoreServices.cs
+++ b/PlotLine/Services/CoreServices.cs
@@ -177,6 +177,19 @@ public interface ILocationService
     Task DeleteSceneAssetLocationAsync(int sceneAssetLocationId);
 }
 
+public interface IFloorPlanService
+{
+    Task<FloorPlanListViewModel?> ListAsync(int projectId);
+    Task<FloorPlanEditorViewModel?> GetEditorAsync(int floorPlanId);
+    Task<int> SavePlanAsync(FloorPlanEditViewModel model);
+    Task DeletePlanAsync(int floorPlanId);
+    Task<int> SaveFloorAsync(FloorPlanFloorEditViewModel model);
+    Task DeleteFloorAsync(int floorPlanFloorId);
+    Task<int> SaveBlockAsync(FloorPlanBlockEditViewModel model);
+    Task SaveLayoutAsync(FloorPlanEditorViewModel model);
+    Task DeleteBlockAsync(int floorPlanBlockId);
+}
+
 public interface IContinuityValidationService
 {
     Task<WarningDashboardViewModel?> GetDashboardAsync(int projectId, int? bookId, int? chapterId, int? sceneId, int? warningTypeId, int? warningSeverityId, string? entityType, string? category, bool includeDismissed, bool includeIntentional, bool showAcknowledgedWarnings, ContinuityValidationSummary? summary = null);
@@ -7509,6 +7522,251 @@ public sealed class LocationService(IProjectRepository projects, ILocationReposi
     }
 }
 
+public sealed class FloorPlanService(
+    IProjectRepository projects,
+    IFloorPlanRepository floorPlans,
+    ILocationRepository locations,
+    IProjectActivityService activity) : IFloorPlanService
+{
+    public async Task<FloorPlanListViewModel?> ListAsync(int projectId)
+    {
+        var project = await projects.GetAsync(projectId);
+        return project is null ? null : new FloorPlanListViewModel
+        {
+            Project = project,
+            FloorPlans = await floorPlans.ListByProjectAsync(projectId),
+            NewFloorPlan = new FloorPlanEditViewModel { ProjectID = projectId, Name = "New floor plan" }
+        };
+    }
+
+    public async Task<FloorPlanEditorViewModel?> GetEditorAsync(int floorPlanId)
+    {
+        var data = await floorPlans.GetEditorAsync(floorPlanId);
+        if (data.FloorPlan is null)
+        {
+            return null;
+        }
+
+        var project = await projects.GetAsync(data.FloorPlan.ProjectID);
+        if (project is null)
+        {
+            return null;
+        }
+
+        var projectLocations = await locations.ListByProjectAsync(project.ProjectID);
+        return new FloorPlanEditorViewModel
+        {
+            Project = project,
+            FloorPlan = new FloorPlanEditViewModel
+            {
+                FloorPlanID = data.FloorPlan.FloorPlanID,
+                ProjectID = data.FloorPlan.ProjectID,
+                Name = data.FloorPlan.Name,
+                Description = data.FloorPlan.Description
+            },
+            Floors = data.Floors.Select(ToFloorEdit).ToList(),
+            Blocks = data.Blocks.Select(ToBlockEdit).ToList(),
+            NewFloor = new FloorPlanFloorEditViewModel
+            {
+                FloorPlanID = data.FloorPlan.FloorPlanID,
+                Name = "New floor",
+                SortOrder = data.Floors.Any() ? data.Floors.Max(x => x.SortOrder) + 10 : 10,
+                GridWidth = 24,
+                GridHeight = 16
+            },
+            NewBlock = new FloorPlanBlockEditViewModel
+            {
+                FloorPlanFloorID = data.Floors.FirstOrDefault()?.FloorPlanFloorID ?? 0,
+                BlockType = FloorPlanBlockTypes.Room,
+                WidthCells = 2,
+                HeightCells = 1
+            },
+            LocationOptions = projectLocations
+                .Select(x => new SelectListItem(string.IsNullOrWhiteSpace(x.LocationPath) ? x.LocationName : x.LocationPath, x.LocationID.ToString()))
+                .ToList(),
+            BlockTypeOptions = FloorPlanBlockTypes.All.Select(x => new SelectListItem(BlockTypeLabel(x), x)).ToList()
+        };
+    }
+
+    public async Task<int> SavePlanAsync(FloorPlanEditViewModel model)
+    {
+        var isNew = model.FloorPlanID == 0;
+        var floorPlanId = await floorPlans.SavePlanAsync(new FloorPlan
+        {
+            FloorPlanID = model.FloorPlanID,
+            ProjectID = model.ProjectID,
+            Name = model.Name.Trim(),
+            Description = model.Description
+        });
+
+        if (isNew)
+        {
+            await floorPlans.SaveFloorAsync(new FloorPlanFloor
+            {
+                FloorPlanID = floorPlanId,
+                Name = "Ground Floor",
+                SortOrder = 10,
+                GridWidth = 24,
+                GridHeight = 16
+            });
+        }
+
+        await activity.RecordAsync(model.ProjectID, isNew ? "Created" : "Updated", "Floor Plan", floorPlanId, model.Name);
+        return floorPlanId;
+    }
+
+    public async Task DeletePlanAsync(int floorPlanId)
+    {
+        var floorPlan = await floorPlans.GetAsync(floorPlanId);
+        await floorPlans.DeletePlanAsync(floorPlanId);
+        if (floorPlan is not null)
+        {
+            await activity.RecordAsync(floorPlan.ProjectID, "Deleted", "Floor Plan", floorPlanId, floorPlan.Name);
+        }
+    }
+
+    public async Task<int> SaveFloorAsync(FloorPlanFloorEditViewModel model)
+    {
+        ValidateFloor(model);
+        return await floorPlans.SaveFloorAsync(new FloorPlanFloor
+        {
+            FloorPlanFloorID = model.FloorPlanFloorID,
+            FloorPlanID = model.FloorPlanID,
+            Name = model.Name.Trim(),
+            SortOrder = model.SortOrder,
+            GridWidth = model.GridWidth,
+            GridHeight = model.GridHeight
+        });
+    }
+
+    public Task DeleteFloorAsync(int floorPlanFloorId) => floorPlans.DeleteFloorAsync(floorPlanFloorId);
+
+    public async Task<int> SaveBlockAsync(FloorPlanBlockEditViewModel model)
+    {
+        var floor = await floorPlans.GetFloorAsync(model.FloorPlanFloorID)
+            ?? throw new InvalidOperationException("Floor not found.");
+        var plan = await floorPlans.GetAsync(floor.FloorPlanID)
+            ?? throw new InvalidOperationException("Floor plan not found.");
+        var projectId = plan.ProjectID;
+        await ValidateBlockAsync(model, floor, projectId);
+        return await floorPlans.SaveBlockAsync(ToBlock(model));
+    }
+
+    public async Task SaveLayoutAsync(FloorPlanEditorViewModel model)
+    {
+        var data = await floorPlans.GetEditorAsync(model.FloorPlan.FloorPlanID);
+        if (data.FloorPlan is null)
+        {
+            throw new InvalidOperationException("Floor plan not found.");
+        }
+
+        await SavePlanAsync(model.FloorPlan);
+        var floorsById = data.Floors.ToDictionary(x => x.FloorPlanFloorID);
+
+        foreach (var floorModel in model.Floors)
+        {
+            ValidateFloor(floorModel);
+            if (floorModel.FloorPlanID != data.FloorPlan.FloorPlanID)
+            {
+                throw new InvalidOperationException("Floor does not belong to this floor plan.");
+            }
+
+            await SaveFloorAsync(floorModel);
+        }
+
+        foreach (var blockModel in model.Blocks)
+        {
+            if (!floorsById.TryGetValue(blockModel.FloorPlanFloorID, out var floor))
+            {
+                throw new InvalidOperationException("Block floor not found.");
+            }
+
+            await ValidateBlockAsync(blockModel, floor, data.FloorPlan.ProjectID);
+            await floorPlans.SaveBlockAsync(ToBlock(blockModel));
+        }
+    }
+
+    public Task DeleteBlockAsync(int floorPlanBlockId) => floorPlans.DeleteBlockAsync(floorPlanBlockId);
+
+    private async Task ValidateBlockAsync(FloorPlanBlockEditViewModel model, FloorPlanFloor floor, int projectId)
+    {
+        if (!FloorPlanBlockTypes.IsValid(model.BlockType))
+        {
+            throw new InvalidOperationException("Choose a valid block type.");
+        }
+
+        if (model.X < 0 || model.Y < 0 || model.WidthCells < 1 || model.HeightCells < 1)
+        {
+            throw new InvalidOperationException("Blocks must have a valid position and size.");
+        }
+
+        if (model.X + model.WidthCells > floor.GridWidth || model.Y + model.HeightCells > floor.GridHeight)
+        {
+            throw new InvalidOperationException("Block is outside the floor grid.");
+        }
+
+        var location = await locations.GetAsync(model.LocationID);
+        if (location is null || location.ProjectID != projectId)
+        {
+            throw new InvalidOperationException("Choose a location from this project.");
+        }
+    }
+
+    private static void ValidateFloor(FloorPlanFloorEditViewModel model)
+    {
+        if (model.GridWidth is < 8 or > 80 || model.GridHeight is < 8 or > 80)
+        {
+            throw new InvalidOperationException("Grid width and height must be between 8 and 80.");
+        }
+    }
+
+    private static FloorPlanFloorEditViewModel ToFloorEdit(FloorPlanFloor floor) => new()
+    {
+        FloorPlanFloorID = floor.FloorPlanFloorID,
+        FloorPlanID = floor.FloorPlanID,
+        Name = floor.Name,
+        SortOrder = floor.SortOrder,
+        GridWidth = floor.GridWidth,
+        GridHeight = floor.GridHeight
+    };
+
+    private static FloorPlanBlockEditViewModel ToBlockEdit(FloorPlanBlock block) => new()
+    {
+        FloorPlanBlockID = block.FloorPlanBlockID,
+        FloorPlanFloorID = block.FloorPlanFloorID,
+        LocationID = block.LocationID,
+        LocationName = block.LocationName,
+        LocationPath = block.LocationPath,
+        X = block.X,
+        Y = block.Y,
+        WidthCells = block.WidthCells,
+        HeightCells = block.HeightCells,
+        BlockType = block.BlockType,
+        LabelOverride = block.LabelOverride,
+        Notes = block.Notes
+    };
+
+    private static FloorPlanBlock ToBlock(FloorPlanBlockEditViewModel model) => new()
+    {
+        FloorPlanBlockID = model.FloorPlanBlockID,
+        FloorPlanFloorID = model.FloorPlanFloorID,
+        LocationID = model.LocationID,
+        X = model.X,
+        Y = model.Y,
+        WidthCells = model.WidthCells,
+        HeightCells = model.HeightCells,
+        BlockType = model.BlockType,
+        LabelOverride = model.LabelOverride,
+        Notes = model.Notes
+    };
+
+    private static string BlockTypeLabel(string blockType) => blockType switch
+    {
+        FloorPlanBlockTypes.OpenSpace => "Open space",
+        _ => blockType
+    };
+}
+
 public sealed class CharacterService(
     IProjectRepository projects,
     IBookRepository books,
diff --git a/PlotLine/Services/ProjectAccessFilter.cs b/PlotLine/Services/ProjectAccessFilter.cs
index ca37b9d..8bda11f 100644
--- a/PlotLine/Services/ProjectAccessFilter.cs
+++ b/PlotLine/Services/ProjectAccessFilter.cs
@@ -52,6 +52,9 @@ public sealed class ProjectAccessFilter(IProjectAccessService access, ICurrentUs
         ["ParentLocationID"] = "Location",
         ["FromLocationID"] = "Location",
         ["ToLocationID"] = "Location",
+        ["FloorPlanID"] = "FloorPlan",
+        ["FloorPlanFloorID"] = "FloorPlanFloor",
+        ["FloorPlanBlockID"] = "FloorPlanBlock",
         ["PlotLineID"] = "PlotLine",
         ["ParentPlotLineID"] = "PlotLine",
         ["PlotThreadID"] = "PlotThread",
@@ -68,6 +71,7 @@ public sealed class ProjectAccessFilter(IProjectAccessService access, ICurrentUs
         ["Chapters"] = new(StringComparer.OrdinalIgnoreCase) { ["id"] = "Chapter", ["chapterId"] = "Chapter", ["bookId"] = "Book" },
         ["Characters"] = new(StringComparer.OrdinalIgnoreCase) { ["id"] = "Character", ["characterId"] = "Character", ["projectId"] = "Project" },
         ["Locations"] = new(StringComparer.OrdinalIgnoreCase) { ["id"] = "Location", ["locationId"] = "Location", ["returnLocationId"] = "Location", ["projectId"] = "Project" },
+        ["FloorPlans"] = new(StringComparer.OrdinalIgnoreCase) { ["id"] = "FloorPlan", ["floorPlanId"] = "FloorPlan", ["floorPlanFloorId"] = "FloorPlanFloor", ["floorPlanBlockId"] = "FloorPlanBlock", ["projectId"] = "Project" },
         ["PlotLines"] = new(StringComparer.OrdinalIgnoreCase) { ["id"] = "PlotLine", ["plotLineId"] = "PlotLine", ["projectId"] = "Project" },
         ["PlotThreads"] = new(StringComparer.OrdinalIgnoreCase) { ["id"] = "PlotThread", ["plotThreadId"] = "PlotThread", ["plotLineId"] = "PlotLine", ["projectId"] = "Project" },
         ["ProjectMetrics"] = new(StringComparer.OrdinalIgnoreCase) { ["projectId"] = "Project" },
diff --git a/PlotLine/Sql/071_LocationFloorPlans.sql b/PlotLine/Sql/071_LocationFloorPlans.sql
new file mode 100644
index 0000000..e4e194e
--- /dev/null
+++ b/PlotLine/Sql/071_LocationFloorPlans.sql
@@ -0,0 +1,453 @@
+IF OBJECT_ID(N'dbo.FloorPlanBlocks', N'U') IS NULL
+BEGIN
+    CREATE TABLE dbo.FloorPlanBlocks
+    (
+        FloorPlanBlockID int IDENTITY(1,1) NOT NULL CONSTRAINT PK_FloorPlanBlocks PRIMARY KEY,
+        FloorPlanFloorID int NOT NULL,
+        LocationID int NOT NULL,
+        X int NOT NULL,
+        Y int NOT NULL,
+        WidthCells int NOT NULL,
+        HeightCells int NOT NULL,
+        BlockType nvarchar(40) NOT NULL CONSTRAINT DF_FloorPlanBlocks_BlockType DEFAULT N'Room',
+        LabelOverride nvarchar(200) NULL,
+        Notes nvarchar(max) NULL,
+        CreatedDate datetime2 NOT NULL CONSTRAINT DF_FloorPlanBlocks_CreatedDate DEFAULT SYSUTCDATETIME(),
+        ModifiedDate datetime2 NULL
+    );
+END;
+GO
+
+IF OBJECT_ID(N'dbo.FloorPlanFloors', N'U') IS NULL
+BEGIN
+    CREATE TABLE dbo.FloorPlanFloors
+    (
+        FloorPlanFloorID int IDENTITY(1,1) NOT NULL CONSTRAINT PK_FloorPlanFloors PRIMARY KEY,
+        FloorPlanID int NOT NULL,
+        Name nvarchar(100) NOT NULL,
+        SortOrder int NOT NULL CONSTRAINT DF_FloorPlanFloors_SortOrder DEFAULT 0,
+        GridWidth int NOT NULL CONSTRAINT DF_FloorPlanFloors_GridWidth DEFAULT 24,
+        GridHeight int NOT NULL CONSTRAINT DF_FloorPlanFloors_GridHeight DEFAULT 16,
+        CreatedDate datetime2 NOT NULL CONSTRAINT DF_FloorPlanFloors_CreatedDate DEFAULT SYSUTCDATETIME(),
+        ModifiedDate datetime2 NULL
+    );
+END;
+GO
+
+IF OBJECT_ID(N'dbo.FloorPlans', N'U') IS NULL
+BEGIN
+    CREATE TABLE dbo.FloorPlans
+    (
+        FloorPlanID int IDENTITY(1,1) NOT NULL CONSTRAINT PK_FloorPlans PRIMARY KEY,
+        ProjectID int NOT NULL,
+        Name nvarchar(200) NOT NULL,
+        Description nvarchar(max) NULL,
+        CreatedDate datetime2 NOT NULL CONSTRAINT DF_FloorPlans_CreatedDate DEFAULT SYSUTCDATETIME(),
+        ModifiedDate datetime2 NULL
+    );
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = N'FK_FloorPlans_Projects')
+BEGIN
+    ALTER TABLE dbo.FloorPlans
+        ADD CONSTRAINT FK_FloorPlans_Projects FOREIGN KEY (ProjectID) REFERENCES dbo.Projects(ProjectID);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = N'FK_FloorPlanFloors_FloorPlans')
+BEGIN
+    ALTER TABLE dbo.FloorPlanFloors
+        ADD CONSTRAINT FK_FloorPlanFloors_FloorPlans FOREIGN KEY (FloorPlanID) REFERENCES dbo.FloorPlans(FloorPlanID) ON DELETE CASCADE;
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = N'FK_FloorPlanBlocks_FloorPlanFloors')
+BEGIN
+    ALTER TABLE dbo.FloorPlanBlocks
+        ADD CONSTRAINT FK_FloorPlanBlocks_FloorPlanFloors FOREIGN KEY (FloorPlanFloorID) REFERENCES dbo.FloorPlanFloors(FloorPlanFloorID) ON DELETE CASCADE;
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = N'FK_FloorPlanBlocks_Locations')
+BEGIN
+    ALTER TABLE dbo.FloorPlanBlocks
+        ADD CONSTRAINT FK_FloorPlanBlocks_Locations FOREIGN KEY (LocationID) REFERENCES dbo.Locations(LocationID);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.check_constraints WHERE name = N'CK_FloorPlanFloors_GridSize')
+BEGIN
+    ALTER TABLE dbo.FloorPlanFloors
+        ADD CONSTRAINT CK_FloorPlanFloors_GridSize CHECK (GridWidth BETWEEN 8 AND 80 AND GridHeight BETWEEN 8 AND 80);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.check_constraints WHERE name = N'CK_FloorPlanBlocks_PositionSize')
+BEGIN
+    ALTER TABLE dbo.FloorPlanBlocks
+        ADD CONSTRAINT CK_FloorPlanBlocks_PositionSize CHECK (X >= 0 AND Y >= 0 AND WidthCells >= 1 AND HeightCells >= 1);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.check_constraints WHERE name = N'CK_FloorPlanBlocks_BlockType')
+BEGIN
+    ALTER TABLE dbo.FloorPlanBlocks
+        ADD CONSTRAINT CK_FloorPlanBlocks_BlockType CHECK (BlockType IN (N'Room', N'Corridor', N'OpenSpace', N'Exterior', N'Other'));
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_FloorPlans_ProjectID' AND object_id = OBJECT_ID(N'dbo.FloorPlans'))
+BEGIN
+    CREATE INDEX IX_FloorPlans_ProjectID ON dbo.FloorPlans(ProjectID);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_FloorPlanFloors_FloorPlanID' AND object_id = OBJECT_ID(N'dbo.FloorPlanFloors'))
+BEGIN
+    CREATE INDEX IX_FloorPlanFloors_FloorPlanID ON dbo.FloorPlanFloors(FloorPlanID);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_FloorPlanBlocks_FloorPlanFloorID' AND object_id = OBJECT_ID(N'dbo.FloorPlanBlocks'))
+BEGIN
+    CREATE INDEX IX_FloorPlanBlocks_FloorPlanFloorID ON dbo.FloorPlanBlocks(FloorPlanFloorID);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_FloorPlanBlocks_LocationID' AND object_id = OBJECT_ID(N'dbo.FloorPlanBlocks'))
+BEGIN
+    CREATE INDEX IX_FloorPlanBlocks_LocationID ON dbo.FloorPlanBlocks(LocationID);
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlan_ListByProject
+    @ProjectID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    SELECT
+        fp.FloorPlanID,
+        fp.ProjectID,
+        fp.Name,
+        fp.Description,
+        fp.CreatedDate,
+        fp.ModifiedDate,
+        COUNT(DISTINCT fpf.FloorPlanFloorID) AS FloorCount,
+        COUNT(fpb.FloorPlanBlockID) AS BlockCount
+    FROM dbo.FloorPlans fp
+    LEFT JOIN dbo.FloorPlanFloors fpf ON fpf.FloorPlanID = fp.FloorPlanID
+    LEFT JOIN dbo.FloorPlanBlocks fpb ON fpb.FloorPlanFloorID = fpf.FloorPlanFloorID
+    WHERE fp.ProjectID = @ProjectID
+    GROUP BY fp.FloorPlanID, fp.ProjectID, fp.Name, fp.Description, fp.CreatedDate, fp.ModifiedDate
+    ORDER BY fp.Name;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlan_Get
+    @FloorPlanID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    SELECT FloorPlanID, ProjectID, Name, Description, CreatedDate, ModifiedDate
+    FROM dbo.FloorPlans
+    WHERE FloorPlanID = @FloorPlanID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlan_GetEditor
+    @FloorPlanID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    EXEC dbo.FloorPlan_Get @FloorPlanID;
+
+    SELECT FloorPlanFloorID, FloorPlanID, Name, SortOrder, GridWidth, GridHeight, CreatedDate, ModifiedDate
+    FROM dbo.FloorPlanFloors
+    WHERE FloorPlanID = @FloorPlanID
+    ORDER BY SortOrder, Name;
+
+    SELECT
+        fpb.FloorPlanBlockID,
+        fpb.FloorPlanFloorID,
+        fpb.LocationID,
+        lp.LocationName,
+        COALESCE(NULLIF(lp.LocationPath, N''), lp.LocationName) AS LocationPath,
+        fpb.X,
+        fpb.Y,
+        fpb.WidthCells,
+        fpb.HeightCells,
+        fpb.BlockType,
+        fpb.LabelOverride,
+        fpb.Notes,
+        fpb.CreatedDate,
+        fpb.ModifiedDate
+    FROM dbo.FloorPlanBlocks fpb
+    INNER JOIN dbo.FloorPlanFloors fpf ON fpf.FloorPlanFloorID = fpb.FloorPlanFloorID
+    INNER JOIN dbo.LocationPaths lp ON lp.LocationID = fpb.LocationID
+    WHERE fpf.FloorPlanID = @FloorPlanID
+    ORDER BY fpf.SortOrder, fpb.Y, fpb.X, lp.LocationName;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlan_Save
+    @FloorPlanID int,
+    @ProjectID int,
+    @Name nvarchar(200),
+    @Description nvarchar(max) = NULL
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    SET @Name = NULLIF(LTRIM(RTRIM(@Name)), N'');
+    IF @Name IS NULL
+        THROW 51000, 'Floor plan name is required.', 1;
+
+    IF @FloorPlanID = 0
+    BEGIN
+        INSERT dbo.FloorPlans (ProjectID, Name, Description)
+        VALUES (@ProjectID, @Name, @Description);
+
+        SELECT CONVERT(int, SCOPE_IDENTITY());
+        RETURN;
+    END;
+
+    UPDATE dbo.FloorPlans
+    SET Name = @Name,
+        Description = @Description,
+        ModifiedDate = SYSUTCDATETIME()
+    WHERE FloorPlanID = @FloorPlanID
+      AND ProjectID = @ProjectID;
+
+    SELECT @FloorPlanID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlan_Delete
+    @FloorPlanID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    DELETE dbo.FloorPlans
+    WHERE FloorPlanID = @FloorPlanID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlanFloor_Get
+    @FloorPlanFloorID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    SELECT FloorPlanFloorID, FloorPlanID, Name, SortOrder, GridWidth, GridHeight, CreatedDate, ModifiedDate
+    FROM dbo.FloorPlanFloors
+    WHERE FloorPlanFloorID = @FloorPlanFloorID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlanFloor_Save
+    @FloorPlanFloorID int,
+    @FloorPlanID int,
+    @Name nvarchar(100),
+    @SortOrder int,
+    @GridWidth int,
+    @GridHeight int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    SET @Name = NULLIF(LTRIM(RTRIM(@Name)), N'');
+    IF @Name IS NULL
+        THROW 51001, 'Floor name is required.', 1;
+
+    IF @GridWidth NOT BETWEEN 8 AND 80 OR @GridHeight NOT BETWEEN 8 AND 80
+        THROW 51002, 'Grid width and height must be between 8 and 80.', 1;
+
+    IF @FloorPlanFloorID = 0
+    BEGIN
+        INSERT dbo.FloorPlanFloors (FloorPlanID, Name, SortOrder, GridWidth, GridHeight)
+        VALUES (@FloorPlanID, @Name, @SortOrder, @GridWidth, @GridHeight);
+
+        SELECT CONVERT(int, SCOPE_IDENTITY());
+        RETURN;
+    END;
+
+    UPDATE dbo.FloorPlanFloors
+    SET Name = @Name,
+        SortOrder = @SortOrder,
+        GridWidth = @GridWidth,
+        GridHeight = @GridHeight,
+        ModifiedDate = SYSUTCDATETIME()
+    WHERE FloorPlanFloorID = @FloorPlanFloorID
+      AND FloorPlanID = @FloorPlanID;
+
+    SELECT @FloorPlanFloorID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlanFloor_Delete
+    @FloorPlanFloorID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    DELETE dbo.FloorPlanFloors
+    WHERE FloorPlanFloorID = @FloorPlanFloorID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlanBlock_Save
+    @FloorPlanBlockID int,
+    @FloorPlanFloorID int,
+    @LocationID int,
+    @X int,
+    @Y int,
+    @WidthCells int,
+    @HeightCells int,
+    @BlockType nvarchar(40),
+    @LabelOverride nvarchar(200) = NULL,
+    @Notes nvarchar(max) = NULL
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    DECLARE @GridWidth int, @GridHeight int, @ProjectID int;
+
+    SELECT
+        @GridWidth = fpf.GridWidth,
+        @GridHeight = fpf.GridHeight,
+        @ProjectID = fp.ProjectID
+    FROM dbo.FloorPlanFloors fpf
+    INNER JOIN dbo.FloorPlans fp ON fp.FloorPlanID = fpf.FloorPlanID
+    WHERE fpf.FloorPlanFloorID = @FloorPlanFloorID;
+
+    IF @ProjectID IS NULL
+        THROW 51003, 'Floor not found.', 1;
+
+    IF NOT EXISTS (SELECT 1 FROM dbo.Locations WHERE LocationID = @LocationID AND ProjectID = @ProjectID AND IsArchived = 0)
+        THROW 51004, 'Location must belong to this project.', 1;
+
+    IF @BlockType NOT IN (N'Room', N'Corridor', N'OpenSpace', N'Exterior', N'Other')
+        THROW 51005, 'Choose a valid block type.', 1;
+
+    IF @X < 0 OR @Y < 0 OR @WidthCells < 1 OR @HeightCells < 1 OR @X + @WidthCells > @GridWidth OR @Y + @HeightCells > @GridHeight
+        THROW 51006, 'Block is outside the floor grid.', 1;
+
+    IF @FloorPlanBlockID = 0
+    BEGIN
+        INSERT dbo.FloorPlanBlocks (FloorPlanFloorID, LocationID, X, Y, WidthCells, HeightCells, BlockType, LabelOverride, Notes)
+        VALUES (@FloorPlanFloorID, @LocationID, @X, @Y, @WidthCells, @HeightCells, @BlockType, NULLIF(LTRIM(RTRIM(@LabelOverride)), N''), @Notes);
+
+        SELECT CONVERT(int, SCOPE_IDENTITY());
+        RETURN;
+    END;
+
+    UPDATE dbo.FloorPlanBlocks
+    SET FloorPlanFloorID = @FloorPlanFloorID,
+        LocationID = @LocationID,
+        X = @X,
+        Y = @Y,
+        WidthCells = @WidthCells,
+        HeightCells = @HeightCells,
+        BlockType = @BlockType,
+        LabelOverride = NULLIF(LTRIM(RTRIM(@LabelOverride)), N''),
+        Notes = @Notes,
+        ModifiedDate = SYSUTCDATETIME()
+    WHERE FloorPlanBlockID = @FloorPlanBlockID;
+
+    SELECT @FloorPlanBlockID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.FloorPlanBlock_Delete
+    @FloorPlanBlockID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    DELETE dbo.FloorPlanBlocks
+    WHERE FloorPlanBlockID = @FloorPlanBlockID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.ProjectAccess_UserCanAccessEntity
+    @EntityType nvarchar(100),
+    @EntityID int,
+    @UserID int
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    DECLARE @ProjectID int;
+
+    IF @EntityType = N'Project'
+        SET @ProjectID = @EntityID;
+    ELSE IF @EntityType = N'Book'
+        SELECT @ProjectID = ProjectID FROM dbo.Books WHERE BookID = @EntityID;
+    ELSE IF @EntityType = N'Chapter'
+        SELECT @ProjectID = b.ProjectID FROM dbo.Chapters c INNER JOIN dbo.Books b ON b.BookID = c.BookID WHERE c.ChapterID = @EntityID;
+    ELSE IF @EntityType = N'Scene'
+        SELECT @ProjectID = b.ProjectID FROM dbo.Scenes s INNER JOIN dbo.Chapters c ON c.ChapterID = s.ChapterID INNER JOIN dbo.Books b ON b.BookID = c.BookID WHERE s.SceneID = @EntityID;
+    ELSE IF @EntityType = N'Character'
+        SELECT @ProjectID = ProjectID FROM dbo.Characters WHERE CharacterID = @EntityID;
+    ELSE IF @EntityType = N'StoryAsset'
+        SELECT @ProjectID = ProjectID FROM dbo.StoryAssets WHERE StoryAssetID = @EntityID;
+    ELSE IF @EntityType = N'Location'
+        SELECT @ProjectID = ProjectID FROM dbo.Locations WHERE LocationID = @EntityID;
+    ELSE IF @EntityType = N'FloorPlan'
+        SELECT @ProjectID = ProjectID FROM dbo.FloorPlans WHERE FloorPlanID = @EntityID;
+    ELSE IF @EntityType = N'FloorPlanFloor'
+        SELECT @ProjectID = fp.ProjectID FROM dbo.FloorPlanFloors fpf INNER JOIN dbo.FloorPlans fp ON fp.FloorPlanID = fpf.FloorPlanID WHERE fpf.FloorPlanFloorID = @EntityID;
+    ELSE IF @EntityType = N'FloorPlanBlock'
+        SELECT @ProjectID = fp.ProjectID FROM dbo.FloorPlanBlocks fpb INNER JOIN dbo.FloorPlanFloors fpf ON fpf.FloorPlanFloorID = fpb.FloorPlanFloorID INNER JOIN dbo.FloorPlans fp ON fp.FloorPlanID = fpf.FloorPlanID WHERE fpb.FloorPlanBlockID = @EntityID;
+    ELSE IF @EntityType = N'PlotLine'
+        SELECT @ProjectID = ProjectID FROM dbo.PlotLines WHERE PlotLineID = @EntityID;
+    ELSE IF @EntityType = N'PlotThread'
+        SELECT @ProjectID = pl.ProjectID FROM dbo.PlotThreads pt INNER JOIN dbo.PlotLines pl ON pl.PlotLineID = pt.PlotLineID WHERE pt.PlotThreadID = @EntityID;
+    ELSE IF @EntityType = N'CharacterRelationship'
+        SELECT @ProjectID = ProjectID FROM dbo.CharacterRelationships WHERE CharacterRelationshipID = @EntityID;
+    ELSE IF @EntityType = N'LocationRelationship'
+        SELECT @ProjectID = l.ProjectID FROM dbo.LocationRelationships lr INNER JOIN dbo.Locations l ON l.LocationID = lr.FromLocationID WHERE lr.LocationRelationshipID = @EntityID;
+    ELSE IF @EntityType = N'TimelineViewPreset'
+        SELECT @ProjectID = ProjectID FROM dbo.TimelineViewPresets WHERE TimelineViewPresetID = @EntityID;
+    ELSE IF @EntityType = N'ProjectRestorePoint'
+        SELECT @ProjectID = ProjectID FROM dbo.ProjectRestorePoints WHERE ProjectRestorePointID = @EntityID;
+    ELSE IF @EntityType = N'Scenario'
+        SELECT @ProjectID = ProjectID FROM dbo.Scenarios WHERE ScenarioID = @EntityID;
+    ELSE IF @EntityType = N'ThreadEvent'
+        SELECT @ProjectID = pl.ProjectID FROM dbo.ThreadEvents te INNER JOIN dbo.PlotThreads pt ON pt.PlotThreadID = te.PlotThreadID INNER JOIN dbo.PlotLines pl ON pl.PlotLineID = pt.PlotLineID WHERE te.ThreadEventID = @EntityID;
+    ELSE IF @EntityType = N'AssetEvent'
+        SELECT @ProjectID = sa.ProjectID FROM dbo.AssetEvents ae INNER JOIN dbo.StoryAssets sa ON sa.StoryAssetID = ae.StoryAssetID WHERE ae.AssetEventID = @EntityID;
+    ELSE IF @EntityType = N'SceneAssetLocation'
+        SELECT @ProjectID = sa.ProjectID FROM dbo.SceneAssetLocations sal INNER JOIN dbo.StoryAssets sa ON sa.StoryAssetID = sal.StoryAssetID WHERE sal.SceneAssetLocationID = @EntityID;
+    ELSE IF @EntityType = N'AssetCustodyEvent'
+        SELECT @ProjectID = sa.ProjectID FROM dbo.AssetCustodyEvents ace INNER JOIN dbo.StoryAssets sa ON sa.StoryAssetID = ace.StoryAssetID WHERE ace.AssetCustodyEventID = @EntityID;
+    ELSE IF @EntityType = N'SceneCharacter'
+        SELECT @ProjectID = ch.ProjectID FROM dbo.SceneCharacters sc INNER JOIN dbo.Characters ch ON ch.CharacterID = sc.CharacterID WHERE sc.SceneCharacterID = @EntityID;
+    ELSE IF @EntityType = N'SceneDependency'
+        SELECT @ProjectID = ProjectID FROM dbo.SceneDependencies WHERE SceneDependencyID = @EntityID;
+    ELSE IF @EntityType = N'CharacterKnowledge'
+        SELECT @ProjectID = c.ProjectID FROM dbo.CharacterKnowledge ck INNER JOIN dbo.Characters c ON c.CharacterID = ck.CharacterID WHERE ck.CharacterKnowledgeID = @EntityID;
+    ELSE IF @EntityType = N'RelationshipEvent'
+        SELECT @ProjectID = cr.ProjectID FROM dbo.RelationshipEvents re INNER JOIN dbo.CharacterRelationships cr ON cr.CharacterRelationshipID = re.CharacterRelationshipID WHERE re.RelationshipEventID = @EntityID;
+    ELSE IF @EntityType = N'SceneNote'
+        SELECT @ProjectID = b.ProjectID FROM dbo.SceneNotes sn INNER JOIN dbo.Scenes s ON s.SceneID = sn.SceneID INNER JOIN dbo.Chapters c ON c.ChapterID = s.ChapterID INNER JOIN dbo.Books b ON b.BookID = c.BookID WHERE sn.SceneNoteID = @EntityID;
+    ELSE IF @EntityType = N'SceneChecklistItem'
+        SELECT @ProjectID = b.ProjectID FROM dbo.SceneChecklistItems sci INNER JOIN dbo.Scenes s ON s.SceneID = sci.SceneID INNER JOIN dbo.Chapters c ON c.ChapterID = s.ChapterID INNER JOIN dbo.Books b ON b.BookID = c.BookID WHERE sci.SceneChecklistItemID = @EntityID;
+    ELSE IF @EntityType = N'SceneAttachment'
+        SELECT @ProjectID = b.ProjectID FROM dbo.SceneAttachments sa INNER JOIN dbo.Scenes s ON s.SceneID = sa.SceneID INNER JOIN dbo.Chapters c ON c.ChapterID = s.ChapterID INNER JOIN dbo.Books b ON b.BookID = c.BookID WHERE sa.SceneAttachmentID = @EntityID;
+
+    SELECT CONVERT(bit, CASE WHEN EXISTS
+    (
+        SELECT 1
+        FROM dbo.ProjectUserAccess
+        WHERE ProjectID = @ProjectID
+          AND UserID = @UserID
+          AND IsActive = 1
+    ) THEN 1 ELSE 0 END);
+END;
+GO
diff --git a/PlotLine/ViewModels/CoreViewModels.cs b/PlotLine/ViewModels/CoreViewModels.cs
index 3ae8756..d8e74aa 100644
--- a/PlotLine/ViewModels/CoreViewModels.cs
+++ b/PlotLine/ViewModels/CoreViewModels.cs
@@ -1816,6 +1816,86 @@ public sealed class LocationRelationshipEditViewModel
     public string? Notes { get; set; }
 }
 
+public sealed class FloorPlanListViewModel
+{
+    public Project Project { get; set; } = new();
+    public IReadOnlyList<FloorPlan> FloorPlans { get; set; } = [];
+    public FloorPlanEditViewModel NewFloorPlan { get; set; } = new();
+}
+
+public sealed class FloorPlanEditViewModel
+{
+    public int FloorPlanID { get; set; }
+    public int ProjectID { get; set; }
+
+    [Required, StringLength(200)]
+    public string Name { get; set; } = string.Empty;
+
+    public string? Description { get; set; }
+}
+
+public sealed class FloorPlanEditorViewModel
+{
+    public Project Project { get; set; } = new();
+    public FloorPlanEditViewModel FloorPlan { get; set; } = new();
+    public List<FloorPlanFloorEditViewModel> Floors { get; set; } = [];
+    public List<FloorPlanBlockEditViewModel> Blocks { get; set; } = [];
+    public FloorPlanFloorEditViewModel NewFloor { get; set; } = new();
+    public FloorPlanBlockEditViewModel NewBlock { get; set; } = new();
+    public IReadOnlyList<SelectListItem> LocationOptions { get; set; } = [];
+    public IReadOnlyList<SelectListItem> BlockTypeOptions { get; set; } = [];
+}
+
+public sealed class FloorPlanFloorEditViewModel
+{
+    public int FloorPlanFloorID { get; set; }
+    public int FloorPlanID { get; set; }
+
+    [Required, StringLength(100)]
+    public string Name { get; set; } = string.Empty;
+
+    public int SortOrder { get; set; }
+
+    [Range(8, 80)]
+    public int GridWidth { get; set; } = 24;
+
+    [Range(8, 80)]
+    public int GridHeight { get; set; } = 16;
+}
+
+public sealed class FloorPlanBlockEditViewModel
+{
+    public int FloorPlanBlockID { get; set; }
+    public int FloorPlanFloorID { get; set; }
+
+    [Range(1, int.MaxValue, ErrorMessage = "Choose a location.")]
+    public int LocationID { get; set; }
+
+    public string LocationName { get; set; } = string.Empty;
+    public string LocationPath { get; set; } = string.Empty;
+
+    [Range(0, 79)]
+    public int X { get; set; }
+
+    [Range(0, 79)]
+    public int Y { get; set; }
+
+    [Range(1, 80)]
+    public int WidthCells { get; set; } = 2;
+
+    [Range(1, 80)]
+    public int HeightCells { get; set; } = 1;
+
+    [Required, StringLength(40)]
+    public string BlockType { get; set; } = FloorPlanBlockTypes.Room;
+
+    [StringLength(200)]
+    public string? LabelOverride { get; set; }
+
+    public string? Notes { get; set; }
+    public string DisplayLabel => string.IsNullOrWhiteSpace(LabelOverride) ? LocationName : LabelOverride;
+}
+
 public sealed class WarningDashboardViewModel
 {
     public Project Project { get; set; } = new();
diff --git a/PlotLine/Views/FloorPlans/Edit.cshtml b/PlotLine/Views/FloorPlans/Edit.cshtml
new file mode 100644
index 0000000..7952bd7
--- /dev/null
+++ b/PlotLine/Views/FloorPlans/Edit.cshtml
@@ -0,0 +1,457 @@
+@model FloorPlanEditorViewModel
+@{
+    ViewData["Title"] = Model.FloorPlan.FloorPlanID == 0 ? "New Floor Plan" : Model.FloorPlan.Name;
+    ViewData["ProjectSection"] = "Floor Plans";
+    var activeFloor = Model.Floors.OrderBy(x => x.SortOrder).ThenBy(x => x.Name).FirstOrDefault();
+    var blocksByFloor = Model.Blocks.GroupBy(x => x.FloorPlanFloorID).ToDictionary(x => x.Key, x => x.ToList());
+    string BlockClass(string blockType) => $"floor-plan-block floor-plan-block--{blockType.ToLowerInvariant()}";
+}
+
+<nav class="breadcrumb-trail" aria-label="Breadcrumb">
+    <a asp-controller="Projects" asp-action="Index">Projects</a>
+    <a asp-controller="Projects" asp-action="Details" asp-route-id="@Model.Project.ProjectID">@Model.Project.ProjectName</a>
+    <a asp-action="Index" asp-route-projectId="@Model.Project.ProjectID">Floor Plans</a>
+    <span>@Model.FloorPlan.Name</span>
+</nav>
+
+<partial name="_ProjectSectionNav" model="Model.Project" />
+
+<div class="page-heading compact">
+    <div>
+        <p class="eyebrow">Location floor plan</p>
+        <h1>@Model.FloorPlan.Name</h1>
+    </div>
+    <a class="btn btn-outline-secondary" asp-action="Index" asp-route-projectId="@Model.Project.ProjectID">Back to floor plans</a>
+</div>
+
+@if (TempData["FloorPlanMessage"] is string message)
+{
+    <div class="alert alert-success">@message</div>
+}
+@if (TempData["FloorPlanError"] is string error)
+{
+    <div class="alert alert-danger">@error</div>
+}
+
+<section class="edit-panel floor-plan-meta">
+    <form asp-action="SavePlan" method="post" class="row g-3">
+        <input asp-for="FloorPlan.FloorPlanID" type="hidden" name="FloorPlanID" />
+        <input asp-for="FloorPlan.ProjectID" type="hidden" name="ProjectID" />
+        <div class="col-md-5">
+            <label asp-for="FloorPlan.Name" class="form-label"></label>
+            <input asp-for="FloorPlan.Name" class="form-control" name="Name" />
+            <span asp-validation-for="FloorPlan.Name" class="text-danger"></span>
+        </div>
+        <div class="col-md-5">
+            <label asp-for="FloorPlan.Description" class="form-label"></label>
+            <input asp-for="FloorPlan.Description" class="form-control" name="Description" />
+        </div>
+        <div class="col-md-2 d-flex align-items-end">
+            <button class="btn btn-outline-primary w-100" type="submit">Save details</button>
+        </div>
+    </form>
+</section>
+
+<section class="edit-panel floor-plan-tools">
+    <form asp-action="AddFloor" method="post" class="row g-2 align-items-end">
+        <input asp-for="NewFloor.FloorPlanID" type="hidden" name="FloorPlanID" />
+        <input asp-for="NewFloor.SortOrder" type="hidden" name="SortOrder" />
+        <div class="col-md-4">
+            <label class="form-label">New floor</label>
+            <input asp-for="NewFloor.Name" class="form-control form-control-sm" name="Name" />
+        </div>
+        <div class="col-md-2">
+            <label class="form-label">Width</label>
+            <input asp-for="NewFloor.GridWidth" class="form-control form-control-sm" name="GridWidth" min="8" max="80" />
+        </div>
+        <div class="col-md-2">
+            <label class="form-label">Height</label>
+            <input asp-for="NewFloor.GridHeight" class="form-control form-control-sm" name="GridHeight" min="8" max="80" />
+        </div>
+        <div class="col-md-2">
+            <button class="btn btn-outline-primary btn-sm w-100" type="submit">Add floor</button>
+        </div>
+    </form>
+
+    @if (Model.Floors.Any() && Model.LocationOptions.Any())
+    {
+        <form asp-action="AddBlock" method="post" class="row g-2 align-items-end">
+            <input type="hidden" name="floorPlanId" value="@Model.FloorPlan.FloorPlanID" />
+            <div class="col-md-3">
+                <label class="form-label">Floor</label>
+                <select asp-for="NewBlock.FloorPlanFloorID" asp-items="@(Model.Floors.OrderBy(x => x.SortOrder).Select(x => new SelectListItem(x.Name, x.FloorPlanFloorID.ToString(), x.FloorPlanFloorID == activeFloor?.FloorPlanFloorID)))" class="form-select form-select-sm" name="FloorPlanFloorID"></select>
+            </div>
+            <div class="col-md-3">
+                <label class="form-label">Location</label>
+                <select asp-for="NewBlock.LocationID" asp-items="Model.LocationOptions" class="form-select form-select-sm" name="LocationID"></select>
+            </div>
+            <div class="col-md-2">
+                <label class="form-label">Type</label>
+                <select asp-for="NewBlock.BlockType" asp-items="Model.BlockTypeOptions" class="form-select form-select-sm" name="BlockType"></select>
+            </div>
+            <div class="col-md-1">
+                <label class="form-label">W</label>
+                <input asp-for="NewBlock.WidthCells" class="form-control form-control-sm" name="WidthCells" min="1" max="80" />
+            </div>
+            <div class="col-md-1">
+                <label class="form-label">H</label>
+                <input asp-for="NewBlock.HeightCells" class="form-control form-control-sm" name="HeightCells" min="1" max="80" />
+            </div>
+            <div class="col-md-2">
+                <button class="btn btn-primary btn-sm w-100" type="submit">Add block</button>
+            </div>
+        </form>
+    }
+</section>
+
+@if (!Model.Floors.Any())
+{
+    <section class="empty-panel">
+        <h2>No floors yet</h2>
+        <p>Add a floor to start arranging linked locations.</p>
+    </section>
+}
+else
+{
+    <form asp-action="SaveLayout" method="post" class="floor-plan-editor" data-floor-plan-editor>
+        <input asp-for="FloorPlan.FloorPlanID" type="hidden" />
+        <input type="hidden" name="floorPlanId" value="@Model.FloorPlan.FloorPlanID" />
+        <input asp-for="FloorPlan.ProjectID" type="hidden" />
+        <input asp-for="FloorPlan.Name" type="hidden" />
+        <input asp-for="FloorPlan.Description" type="hidden" />
+
+        <section class="floor-plan-tabs" role="tablist" aria-label="Floors">
+            @foreach (var floor in Model.Floors.OrderBy(x => x.SortOrder).ThenBy(x => x.Name))
+            {
+                var isActive = floor.FloorPlanFloorID == activeFloor?.FloorPlanFloorID;
+                <button type="button" class="floor-plan-tab @(isActive ? "active" : string.Empty)" data-floor-tab="@floor.FloorPlanFloorID">@floor.Name</button>
+            }
+        </section>
+
+        <div class="floor-plan-layout">
+            <section class="floor-plan-stage">
+                @for (var i = 0; i < Model.Floors.Count; i++)
+                {
+                    var floor = Model.Floors[i];
+                    var isActive = floor.FloorPlanFloorID == activeFloor?.FloorPlanFloorID;
+                    var floorBlocks = blocksByFloor.GetValueOrDefault(floor.FloorPlanFloorID) ?? [];
+                    <div class="floor-plan-floor @(isActive ? "active" : string.Empty)" data-floor-panel="@floor.FloorPlanFloorID">
+                        <div class="floor-plan-floor-header">
+                            <div>
+                                <input asp-for="Floors[i].FloorPlanFloorID" type="hidden" />
+                                <input asp-for="Floors[i].FloorPlanID" type="hidden" />
+                                <input asp-for="Floors[i].SortOrder" type="hidden" />
+                                <label class="form-label">Floor name</label>
+                                <input asp-for="Floors[i].Name" class="form-control form-control-sm" />
+                            </div>
+                            <div>
+                                <label class="form-label">Grid width</label>
+                                <input asp-for="Floors[i].GridWidth" class="form-control form-control-sm" min="8" max="80" data-floor-width="@floor.FloorPlanFloorID" />
+                            </div>
+                            <div>
+                                <label class="form-label">Grid height</label>
+                                <input asp-for="Floors[i].GridHeight" class="form-control form-control-sm" min="8" max="80" data-floor-height="@floor.FloorPlanFloorID" />
+                            </div>
+                            <button class="btn btn-outline-danger btn-sm"
+                                    type="button"
+                                    data-delete-floor="@floor.FloorPlanFloorID"
+                                    data-confirm-message="Delete this floor and its placed blocks? Linked locations are not deleted.">Delete floor</button>
+                        </div>
+
+                        <div class="floor-plan-grid-wrap">
+                            <div class="floor-plan-grid"
+                                 style="--grid-width:@floor.GridWidth;--grid-height:@floor.GridHeight;"
+                                 data-floor-grid="@floor.FloorPlanFloorID"
+                                 data-grid-width="@floor.GridWidth"
+                                 data-grid-height="@floor.GridHeight">
+                                @foreach (var block in floorBlocks)
+                                {
+                                    var blockIndex = Model.Blocks.FindIndex(x => x.FloorPlanBlockID == block.FloorPlanBlockID);
+                                    <button type="button"
+                                            class="@BlockClass(block.BlockType)"
+                                            style="--x:@block.X;--y:@block.Y;--w:@block.WidthCells;--h:@block.HeightCells;"
+                                            data-block="@block.FloorPlanBlockID"
+                                            data-block-index="@blockIndex"
+                                            data-floor-id="@block.FloorPlanFloorID">
+                                        <span>@block.DisplayLabel</span>
+                                        <span class="floor-plan-resize-handle" data-resize-handle aria-hidden="true"></span>
+                                    </button>
+                                }
+                            </div>
+                        </div>
+                    </div>
+                }
+            </section>
+
+            <aside class="floor-plan-side-panel">
+                <h2>Selected block</h2>
+                <p class="muted" data-no-selection>Select a block on the grid to edit its details.</p>
+                <div class="floor-plan-overlap-warning d-none" data-overlap-warning>Some blocks overlap on this floor.</div>
+
+                @for (var i = 0; i < Model.Blocks.Count; i++)
+                {
+                    <div class="floor-plan-block-editor d-none" data-block-editor="@Model.Blocks[i].FloorPlanBlockID">
+                        <input asp-for="Blocks[i].FloorPlanBlockID" type="hidden" />
+                        <input asp-for="Blocks[i].FloorPlanFloorID" type="hidden" data-block-field="floor" />
+                        <input asp-for="Blocks[i].LocationName" type="hidden" />
+                        <input asp-for="Blocks[i].LocationPath" type="hidden" />
+                        <div class="mb-2">
+                            <label class="form-label">Location</label>
+                            <select asp-for="Blocks[i].LocationID" asp-items="Model.LocationOptions" class="form-select form-select-sm"></select>
+                        </div>
+                        <div class="mb-2">
+                            <label class="form-label">Type</label>
+                            <select asp-for="Blocks[i].BlockType" asp-items="Model.BlockTypeOptions" class="form-select form-select-sm" data-block-field="type"></select>
+                        </div>
+                        <div class="row g-2">
+                            <div class="col-6">
+                                <label class="form-label">X</label>
+                                <input asp-for="Blocks[i].X" class="form-control form-control-sm" min="0" max="79" data-block-field="x" />
+                            </div>
+                            <div class="col-6">
+                                <label class="form-label">Y</label>
+                                <input asp-for="Blocks[i].Y" class="form-control form-control-sm" min="0" max="79" data-block-field="y" />
+                            </div>
+                            <div class="col-6">
+                                <label class="form-label">Width</label>
+                                <input asp-for="Blocks[i].WidthCells" class="form-control form-control-sm" min="1" max="80" data-block-field="w" />
+                            </div>
+                            <div class="col-6">
+                                <label class="form-label">Height</label>
+                                <input asp-for="Blocks[i].HeightCells" class="form-control form-control-sm" min="1" max="80" data-block-field="h" />
+                            </div>
+                        </div>
+                        <div class="mt-2">
+                            <label class="form-label">Label override</label>
+                            <input asp-for="Blocks[i].LabelOverride" class="form-control form-control-sm" />
+                        </div>
+                        <div class="mt-2">
+                            <label class="form-label">Notes</label>
+                            <textarea asp-for="Blocks[i].Notes" class="form-control form-control-sm" rows="3"></textarea>
+                        </div>
+                        <div class="button-row mt-3">
+                            <button class="btn btn-outline-danger btn-sm"
+                                    type="button"
+                                    data-delete-block="@Model.Blocks[i].FloorPlanBlockID">Delete block</button>
+                        </div>
+                    </div>
+                }
+            </aside>
+        </div>
+
+        <div class="button-row mt-3">
+            <button class="btn btn-primary" type="submit">Save layout</button>
+        </div>
+    </form>
+}
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+    <script>
+        (() => {
+            const editor = document.querySelector("[data-floor-plan-editor]");
+            if (!editor) return;
+
+            const tabs = [...editor.querySelectorAll("[data-floor-tab]")];
+            const panels = [...editor.querySelectorAll("[data-floor-panel]")];
+            const blocks = [...editor.querySelectorAll("[data-block]")];
+            const noSelection = editor.querySelector("[data-no-selection]");
+            const warning = editor.querySelector("[data-overlap-warning]");
+            let selectedBlock = null;
+            let pointerState = null;
+
+            function setActiveFloor(floorId) {
+                tabs.forEach(tab => tab.classList.toggle("active", tab.dataset.floorTab === floorId));
+                panels.forEach(panel => panel.classList.toggle("active", panel.dataset.floorPanel === floorId));
+                checkOverlaps();
+            }
+
+            function selectBlock(block) {
+                selectedBlock = block;
+                blocks.forEach(item => item.classList.toggle("selected", item === block));
+                editor.querySelectorAll("[data-block-editor]").forEach(panel => panel.classList.add("d-none"));
+                const panel = editor.querySelector(`[data-block-editor="${block.dataset.block}"]`);
+                if (panel) panel.classList.remove("d-none");
+                if (noSelection) noSelection.classList.add("d-none");
+            }
+
+            function fieldsFor(block) {
+                const panel = editor.querySelector(`[data-block-editor="${block.dataset.block}"]`);
+                return {
+                    panel,
+                    floor: panel?.querySelector("[data-block-field='floor']"),
+                    x: panel?.querySelector("[data-block-field='x']"),
+                    y: panel?.querySelector("[data-block-field='y']"),
+                    w: panel?.querySelector("[data-block-field='w']"),
+                    h: panel?.querySelector("[data-block-field='h']"),
+                    type: panel?.querySelector("[data-block-field='type']")
+                };
+            }
+
+            function gridFor(block) {
+                return editor.querySelector(`[data-floor-grid="${block.dataset.floorId}"]`);
+            }
+
+            function clampBlock(block, values) {
+                const grid = gridFor(block);
+                const gridWidth = Number(grid?.dataset.gridWidth || 24);
+                const gridHeight = Number(grid?.dataset.gridHeight || 16);
+                const w = Math.max(1, Math.min(Number(values.w), gridWidth));
+                const h = Math.max(1, Math.min(Number(values.h), gridHeight));
+                const x = Math.max(0, Math.min(Number(values.x), gridWidth - w));
+                const y = Math.max(0, Math.min(Number(values.y), gridHeight - h));
+                return { x, y, w, h };
+            }
+
+            function readBlock(block) {
+                const fields = fieldsFor(block);
+                return {
+                    x: Number(fields.x?.value || block.style.getPropertyValue("--x") || 0),
+                    y: Number(fields.y?.value || block.style.getPropertyValue("--y") || 0),
+                    w: Number(fields.w?.value || block.style.getPropertyValue("--w") || 1),
+                    h: Number(fields.h?.value || block.style.getPropertyValue("--h") || 1)
+                };
+            }
+
+            function writeBlock(block, values) {
+                const next = clampBlock(block, values);
+                block.style.setProperty("--x", next.x);
+                block.style.setProperty("--y", next.y);
+                block.style.setProperty("--w", next.w);
+                block.style.setProperty("--h", next.h);
+                const fields = fieldsFor(block);
+                if (fields.x) fields.x.value = next.x;
+                if (fields.y) fields.y.value = next.y;
+                if (fields.w) fields.w.value = next.w;
+                if (fields.h) fields.h.value = next.h;
+                checkOverlaps();
+            }
+
+            function cellFromPointer(grid, event) {
+                const rect = grid.getBoundingClientRect();
+                const gridWidth = Number(grid.dataset.gridWidth || 24);
+                const gridHeight = Number(grid.dataset.gridHeight || 16);
+                return {
+                    x: Math.floor((event.clientX - rect.left) / (rect.width / gridWidth)),
+                    y: Math.floor((event.clientY - rect.top) / (rect.height / gridHeight))
+                };
+            }
+
+            function checkOverlaps() {
+                const activePanel = panels.find(panel => panel.classList.contains("active"));
+                if (!activePanel) return;
+                const visibleBlocks = [...activePanel.querySelectorAll("[data-block]")].map(block => ({ block, ...readBlock(block) }));
+                let overlaps = false;
+                visibleBlocks.forEach(a => {
+                    a.block.classList.remove("overlap");
+                    visibleBlocks.forEach(b => {
+                        if (a === b) return;
+                        const separated = a.x + a.w <= b.x || b.x + b.w <= a.x || a.y + a.h <= b.y || b.y + b.h <= a.y;
+                        if (!separated) {
+                            overlaps = true;
+                            a.block.classList.add("overlap");
+                            b.block.classList.add("overlap");
+                        }
+                    });
+                });
+                warning?.classList.toggle("d-none", !overlaps);
+            }
+
+            tabs.forEach(tab => tab.addEventListener("click", () => setActiveFloor(tab.dataset.floorTab)));
+
+            blocks.forEach(block => {
+                block.addEventListener("pointerdown", event => {
+                    selectBlock(block);
+                    const grid = gridFor(block);
+                    if (!grid) return;
+                    const start = cellFromPointer(grid, event);
+                    const current = readBlock(block);
+                    const resizing = event.target.matches("[data-resize-handle]");
+                    pointerState = { block, grid, start, current, resizing };
+                    block.setPointerCapture(event.pointerId);
+                    event.preventDefault();
+                });
+            });
+
+            editor.addEventListener("pointermove", event => {
+                if (!pointerState) return;
+                const currentCell = cellFromPointer(pointerState.grid, event);
+                const dx = currentCell.x - pointerState.start.x;
+                const dy = currentCell.y - pointerState.start.y;
+                if (pointerState.resizing) {
+                    writeBlock(pointerState.block, {
+                        ...pointerState.current,
+                        w: pointerState.current.w + dx,
+                        h: pointerState.current.h + dy
+                    });
+                } else {
+                    writeBlock(pointerState.block, {
+                        ...pointerState.current,
+                        x: pointerState.current.x + dx,
+                        y: pointerState.current.y + dy
+                    });
+                }
+            });
+
+            editor.addEventListener("pointerup", () => pointerState = null);
+            editor.addEventListener("pointercancel", () => pointerState = null);
+
+            editor.querySelectorAll("[data-block-field='x'],[data-block-field='y'],[data-block-field='w'],[data-block-field='h']").forEach(input => {
+                input.addEventListener("change", () => {
+                    if (!selectedBlock) return;
+                    writeBlock(selectedBlock, readBlock(selectedBlock));
+                });
+            });
+
+            editor.querySelectorAll("[data-block-field='type']").forEach(select => {
+                select.addEventListener("change", () => {
+                    if (!selectedBlock) return;
+                    selectedBlock.className = selectedBlock.className
+                        .split(" ")
+                        .filter(name => !name.startsWith("floor-plan-block--"))
+                        .concat(`floor-plan-block--${select.value.toLowerCase()}`)
+                        .join(" ");
+                });
+            });
+
+            async function postDelete(url, fields) {
+                const token = editor.querySelector("input[name='__RequestVerificationToken']")?.value;
+                const body = new URLSearchParams({ ...fields, __RequestVerificationToken: token || "" });
+                const response = await fetch(url, {
+                    method: "POST",
+                    headers: { "Content-Type": "application/x-www-form-urlencoded" },
+                    body
+                });
+                if (response.redirected) {
+                    window.location.href = response.url;
+                    return;
+                }
+                window.location.reload();
+            }
+
+            editor.querySelectorAll("[data-delete-block]").forEach(button => {
+                button.addEventListener("click", () => {
+                    postDelete("@Url.Action("DeleteBlock", "FloorPlans")", {
+                        floorPlanId: "@Model.FloorPlan.FloorPlanID",
+                        floorPlanBlockId: button.dataset.deleteBlock
+                    });
+                });
+            });
+
+            editor.querySelectorAll("[data-delete-floor]").forEach(button => {
+                button.addEventListener("click", () => {
+                    const message = button.dataset.confirmMessage || "Delete this floor?";
+                    if (window.confirm(message)) {
+                        postDelete("@Url.Action("DeleteFloor", "FloorPlans")", {
+                            floorPlanId: "@Model.FloorPlan.FloorPlanID",
+                            floorPlanFloorId: button.dataset.deleteFloor
+                        });
+                    }
+                });
+            });
+
+            if (blocks[0]) selectBlock(blocks[0]);
+            checkOverlaps();
+        })();
+    </script>
+}
diff --git a/PlotLine/Views/FloorPlans/Index.cshtml b/PlotLine/Views/FloorPlans/Index.cshtml
new file mode 100644
index 0000000..977da99
--- /dev/null
+++ b/PlotLine/Views/FloorPlans/Index.cshtml
@@ -0,0 +1,79 @@
+@model FloorPlanListViewModel
+@{
+    ViewData["Title"] = "Floor Plans";
+    ViewData["ProjectSection"] = "Floor Plans";
+}
+
+<nav class="breadcrumb-trail" aria-label="Breadcrumb">
+    <a asp-controller="Projects" asp-action="Index">Projects</a>
+    <a asp-controller="Projects" asp-action="Details" asp-route-id="@Model.Project.ProjectID">@Model.Project.ProjectName</a>
+    <span>Floor Plans</span>
+</nav>
+
+<partial name="_ProjectSectionNav" model="Model.Project" />
+
+<div class="page-heading compact">
+    <div>
+        <p class="eyebrow">Location plans</p>
+        <h1>@Model.Project.ProjectName</h1>
+    </div>
+</div>
+
+@if (TempData["FloorPlanMessage"] is string message)
+{
+    <div class="alert alert-success">@message</div>
+}
+
+<section class="edit-panel">
+    <h2>Create floor plan</h2>
+    <form asp-action="Create" method="post" class="row g-3">
+        <input asp-for="NewFloorPlan.ProjectID" type="hidden" name="ProjectID" />
+        <div class="col-md-5">
+            <label asp-for="NewFloorPlan.Name" class="form-label"></label>
+            <input asp-for="NewFloorPlan.Name" class="form-control" name="Name" />
+        </div>
+        <div class="col-md-5">
+            <label asp-for="NewFloorPlan.Description" class="form-label"></label>
+            <input asp-for="NewFloorPlan.Description" class="form-control" name="Description" />
+        </div>
+        <div class="col-md-2 d-flex align-items-end">
+            <button class="btn btn-primary w-100" type="submit">Create</button>
+        </div>
+    </form>
+</section>
+
+@if (!Model.FloorPlans.Any())
+{
+    <section class="empty-panel">
+        <h2>No floor plans yet</h2>
+        <p>Create a plan, then arrange existing locations as rooms, corridors, halls, gardens, or other spaces.</p>
+    </section>
+}
+else
+{
+    <section class="edit-panel">
+        <div class="floor-plan-list">
+            @foreach (var floorPlan in Model.FloorPlans)
+            {
+                <article class="floor-plan-list-item">
+                    <div>
+                        <h2><a asp-action="Edit" asp-route-id="@floorPlan.FloorPlanID">@floorPlan.Name</a></h2>
+                        @if (!string.IsNullOrWhiteSpace(floorPlan.Description))
+                        {
+                            <p>@floorPlan.Description</p>
+                        }
+                        <p class="muted">@floorPlan.FloorCount floor(s), @floorPlan.BlockCount placed block(s)</p>
+                    </div>
+                    <div class="button-row compact-buttons">
+                        <a class="btn btn-outline-secondary btn-sm" asp-action="Edit" asp-route-id="@floorPlan.FloorPlanID">Open editor</a>
+                        <form asp-action="DeletePlan" method="post" data-confirm-message="Delete this floor plan?&#10;&#10;This deletes its floors and placed blocks. Linked locations are not deleted.">
+                            <input type="hidden" name="id" value="@floorPlan.FloorPlanID" />
+                            <input type="hidden" name="projectId" value="@Model.Project.ProjectID" />
+                            <button class="btn btn-outline-danger btn-sm" type="submit">Delete</button>
+                        </form>
+                    </div>
+                </article>
+            }
+        </div>
+    </section>
+}
diff --git a/PlotLine/Views/Shared/_ProjectSectionNav.cshtml b/PlotLine/Views/Shared/_ProjectSectionNav.cshtml
index 72b5a05..03224ba 100644
--- a/PlotLine/Views/Shared/_ProjectSectionNav.cshtml
+++ b/PlotLine/Views/Shared/_ProjectSectionNav.cshtml
@@ -16,6 +16,7 @@
         <a class="pw-project-nav__link @(ActiveClass("Relationships"))" asp-controller="RelationshipMap" asp-action="Index" asp-route-projectId="@projectId">Relationships</a>
         <a class="pw-project-nav__link @(ActiveClass("Assets"))" asp-controller="StoryAssets" asp-action="Index" asp-route-projectId="@projectId">Assets</a>
         <a class="pw-project-nav__link @(ActiveClass("Locations"))" asp-controller="Locations" asp-action="Index" asp-route-projectId="@projectId">Locations</a>
+        <a class="pw-project-nav__link @(ActiveClass("Floor Plans"))" asp-controller="FloorPlans" asp-action="Index" asp-route-projectId="@projectId">Floor Plans</a>
         <a class="pw-project-nav__link @(ActiveClass("Threads"))" asp-controller="PlotThreads" asp-action="Index" asp-route-projectId="@projectId">Threads</a>
         <a class="pw-project-nav__link @(ActiveClass("Metrics"))" asp-controller="ProjectMetrics" asp-action="Index" asp-route-projectId="@projectId">Metrics</a>
         <a class="pw-project-nav__link @(ActiveClass("Scenarios"))" asp-controller="Scenarios" asp-action="Index" asp-route-projectId="@projectId">Scenarios</a>
diff --git a/PlotLine/wwwroot/css/site.css b/PlotLine/wwwroot/css/site.css
index 10a72a3..42e8f6d 100644
--- a/PlotLine/wwwroot/css/site.css
+++ b/PlotLine/wwwroot/css/site.css
@@ -4449,3 +4449,234 @@ body.dragging-location [data-drag-type="location"] {
     border-right: 0;
   }
 }
+
+.floor-plan-list {
+  display: grid;
+  gap: 12px;
+}
+
+.floor-plan-list-item {
+  align-items: center;
+  border: 1px solid var(--border-color, #d8ded9);
+  border-radius: 8px;
+  display: flex;
+  justify-content: space-between;
+  gap: 16px;
+  padding: 14px;
+}
+
+.floor-plan-list-item h2 {
+  font-size: 1.05rem;
+  margin: 0 0 4px;
+}
+
+.floor-plan-list-item p {
+  margin: 0;
+}
+
+.floor-plan-tools {
+  display: grid;
+  gap: 14px;
+}
+
+.floor-plan-tabs {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  margin-bottom: 12px;
+}
+
+.floor-plan-tab {
+  background: var(--panel-bg, #fff);
+  border: 1px solid var(--border-color, #d8ded9);
+  border-radius: 999px;
+  color: inherit;
+  padding: 6px 12px;
+}
+
+.floor-plan-tab.active {
+  background: var(--bs-primary, #2f6f63);
+  border-color: var(--bs-primary, #2f6f63);
+  color: #fff;
+}
+
+.floor-plan-layout {
+  display: grid;
+  gap: 16px;
+  grid-template-columns: minmax(0, 1fr) 320px;
+}
+
+.floor-plan-floor {
+  display: none;
+}
+
+.floor-plan-floor.active {
+  display: block;
+}
+
+.floor-plan-floor-header {
+  align-items: end;
+  display: grid;
+  gap: 10px;
+  grid-template-columns: minmax(180px, 1fr) 120px 120px auto;
+  margin-bottom: 10px;
+}
+
+.floor-plan-grid-wrap {
+  overflow: auto;
+  padding-bottom: 8px;
+}
+
+.floor-plan-grid {
+  --cell-size: 34px;
+  background-color: var(--panel-bg, #fff);
+  background-image:
+    linear-gradient(to right, rgba(93, 111, 101, .18) 1px, transparent 1px),
+    linear-gradient(to bottom, rgba(93, 111, 101, .18) 1px, transparent 1px);
+  background-size: var(--cell-size) var(--cell-size);
+  border: 1px solid var(--border-color, #d8ded9);
+  border-radius: 8px;
+  height: calc(var(--grid-height) * var(--cell-size));
+  min-width: calc(var(--grid-width) * var(--cell-size));
+  position: relative;
+  width: calc(var(--grid-width) * var(--cell-size));
+}
+
+.floor-plan-block {
+  align-items: center;
+  border: 2px solid rgba(44, 84, 75, .55);
+  border-radius: 6px;
+  color: #12332c;
+  cursor: grab;
+  display: flex;
+  font-weight: 650;
+  height: calc(var(--h) * var(--cell-size));
+  justify-content: center;
+  left: calc(var(--x) * var(--cell-size));
+  line-height: 1.2;
+  overflow: hidden;
+  padding: 6px;
+  position: absolute;
+  text-align: center;
+  top: calc(var(--y) * var(--cell-size));
+  touch-action: none;
+  width: calc(var(--w) * var(--cell-size));
+}
+
+.floor-plan-block span:first-child {
+  overflow-wrap: anywhere;
+}
+
+.floor-plan-block.selected {
+  box-shadow: 0 0 0 3px rgba(47, 111, 99, .28);
+  outline: 2px solid var(--bs-primary, #2f6f63);
+  z-index: 3;
+}
+
+.floor-plan-block.overlap {
+  border-color: #b45544;
+  box-shadow: inset 0 0 0 2px rgba(180, 85, 68, .18);
+}
+
+.floor-plan-block--room {
+  background: #d9eee7;
+}
+
+.floor-plan-block--corridor {
+  background: #e7e2f4;
+}
+
+.floor-plan-block--openspace {
+  background: #e5efd4;
+}
+
+.floor-plan-block--exterior {
+  background: #d9ecf3;
+}
+
+.floor-plan-block--other {
+  background: #ece9e1;
+}
+
+.floor-plan-resize-handle {
+  border-bottom: 10px solid rgba(18, 51, 44, .45);
+  border-left: 10px solid transparent;
+  bottom: 4px;
+  height: 0;
+  position: absolute;
+  right: 4px;
+  width: 0;
+}
+
+.floor-plan-side-panel {
+  align-self: start;
+  background: var(--panel-bg, #fff);
+  border: 1px solid var(--border-color, #d8ded9);
+  border-radius: 8px;
+  padding: 14px;
+  position: sticky;
+  top: 12px;
+}
+
+.floor-plan-side-panel h2 {
+  font-size: 1.05rem;
+  margin-bottom: 8px;
+}
+
+.floor-plan-overlap-warning {
+  background: rgba(180, 85, 68, .12);
+  border: 1px solid rgba(180, 85, 68, .35);
+  border-radius: 6px;
+  color: #8f3f31;
+  margin-bottom: 10px;
+  padding: 8px 10px;
+}
+
+[data-bs-theme="dark"] .floor-plan-grid,
+.dark .floor-plan-grid {
+  background-color: #15201d;
+  background-image:
+    linear-gradient(to right, rgba(214, 224, 218, .12) 1px, transparent 1px),
+    linear-gradient(to bottom, rgba(214, 224, 218, .12) 1px, transparent 1px);
+}
+
+[data-bs-theme="dark"] .floor-plan-block,
+.dark .floor-plan-block {
+  color: #f1f6f3;
+}
+
+[data-bs-theme="dark"] .floor-plan-block--room,
+.dark .floor-plan-block--room {
+  background: #29584f;
+}
+
+[data-bs-theme="dark"] .floor-plan-block--corridor,
+.dark .floor-plan-block--corridor {
+  background: #514876;
+}
+
+[data-bs-theme="dark"] .floor-plan-block--openspace,
+.dark .floor-plan-block--openspace {
+  background: #4f6133;
+}
+
+[data-bs-theme="dark"] .floor-plan-block--exterior,
+.dark .floor-plan-block--exterior {
+  background: #315d6f;
+}
+
+[data-bs-theme="dark"] .floor-plan-block--other,
+.dark .floor-plan-block--other {
+  background: #5b564c;
+}
+
+@media (max-width: 1100px) {
+  .floor-plan-layout,
+  .floor-plan-floor-header {
+    grid-template-columns: 1fr;
+  }
+
+  .floor-plan-side-panel {
+    position: static;
+  }
+}
diff --git a/PlotLine/wwwroot/css/site.min.css b/PlotLine/wwwroot/css/site.min.css
index 97e989b..6eacae6 100644
--- a/PlotLine/wwwroot/css/site.min.css
+++ b/PlotLine/wwwroot/css/site.min.css
@@ -1 +1 @@
-html{font-size:15px;min-height:100%}@media (min-width:768px){html{font-size:16px}}:root{--plotline-ink:#1e252b;--plotline-muted:#66717b;--plotline-paper:#fbfaf7;--plotline-panel:#ffffff;--plotline-line:#d8ddd8;--plotline-accent:#2f6f63;--plotline-accent-dark:#22534a;--plotline-soft:#eef5f2;--timeline-label-width:180px;--timeline-scene-width:220px;--timeline-grid-gap:10px}body{min-height:100%;margin-bottom:0;color:var(--plotline-ink);background:var(--plotline-paper)}a{color:var(--plotline-accent-dark)}.btn-primary{--bs-btn-bg:var(--plotline-accent);--bs-btn-border-color:var(--plotline-accent);--bs-btn-hover-bg:var(--plotline-accent-dark);--bs-btn-hover-border-color:var(--plotline-accent-dark)}.btn-outline-primary{--bs-btn-color:var(--plotline-accent-dark);--bs-btn-border-color:var(--plotline-accent);--bs-btn-hover-bg:var(--plotline-accent);--bs-btn-hover-border-color:var(--plotline-accent)}.plotline-nav{background:rgba(255,255,255,.94);backdrop-filter:blur(8px)}.plotline-shell{max-width:1480px;padding-left:24px;padding-right:24px}.plotline-shell-wide{max-width:none;padding-left:clamp(18px,2vw,32px);padding-right:clamp(18px,2vw,32px)}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin:18px 0 24px}.workspace-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin:14px 0 18px}.workspace-heading h1{margin:0;font-size:clamp(1.8rem, 3vw, 2.7rem);line-height:1.05}.page-heading.compact{max-width:980px}.page-heading h1{margin:0;font-size:clamp(2rem, 4vw, 3.2rem);line-height:1.05;letter-spacing:0}.eyebrow{margin:0 0 6px;color:var(--plotline-accent-dark);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.lead-text{max-width:760px;margin:10px 0 0;color:var(--plotline-muted);font-size:1.05rem}.button-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.asset-card-footer form,.button-row form,.compact-buttons form,form[data-confirm-message],td.text-end form{display:inline-flex;align-items:center;margin:0}td.text-end{white-space:nowrap}.content-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.edit-panel,.empty-panel,.list-section,.plain-card{background:var(--plotline-panel);border:1px solid var(--plotline-line);border-radius:8px;padding:20px;box-shadow:0 10px 24px rgba(30,37,43,.04)}.empty-panel h2,.list-section h2,.plain-card h2{margin-top:0;font-size:1.35rem}.empty-panel p,.muted,.plain-card p{color:var(--plotline-muted)}.edit-panel{max-width:980px}.trial-dashboard-banner,.trial-status-panel{border:1px solid var(--plotline-line);border-radius:8px;padding:18px 20px;background:var(--plotline-panel)}.trial-status-panel{display:grid;gap:12px;margin-bottom:18px}.trial-status-panel--signup{grid-template-columns:minmax(0,1fr) auto;align-items:center;max-width:980px}.trial-dashboard-banner h2,.trial-status-panel h2,.trial-status-panel h3{margin:0}.trial-dashboard-banner p,.trial-status-panel p{margin-bottom:0}.trial-dashboard-banner,.trial-status-panel__heading{display:flex;gap:16px;align-items:center;justify-content:space-between}.trial-dashboard-banner{margin-bottom:18px}.trial-dashboard-banner__body{min-width:0}.trial-dashboard-banner__actions{display:flex;flex:0 0 auto;flex-wrap:wrap;gap:8px}.trial-progress{height:10px;overflow:hidden;border-radius:999px;background:rgba(84,68,48,.12)}.trial-progress__bar{height:100%;border-radius:inherit}.trial-dashboard-banner[hidden],.trial-status-panel[hidden]{display:none}.location-page .drag-drop-panel,.location-page .edit-panel,.location-page .empty-panel,.location-page .page-heading.compact{max-width:none}.import-panel,.import-preview-section{max-width:none}.import-json-input{font-family:Consolas,"Liberation Mono",Menlo,monospace;font-size:.88rem;line-height:1.45;min-height:34rem;max-height:64vh;overflow:auto;resize:vertical;white-space:pre}.import-counts,.import-preview-heading{display:flex;align-items:flex-start;gap:12px}.import-preview-heading{justify-content:space-between;margin-bottom:16px}.import-counts{flex-wrap:wrap}.import-counts span{display:inline-flex;align-items:baseline;gap:5px;border:1px solid var(--plotline-line);border-radius:999px;padding:5px 11px;background:var(--plotline-soft);color:var(--plotline-muted);font-weight:700}.import-counts strong{color:var(--plotline-ink)}.import-tree{display:grid;gap:12px}.import-tree-book{border:1px solid var(--plotline-line);border-radius:8px;padding:14px;background:rgba(255,255,255,.54)}.import-tree-book>summary,.import-tree-chapter>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer}.import-tree-book>summary span,.import-tree-chapter>summary span{color:var(--plotline-muted);font-size:.84rem;font-weight:700;white-space:nowrap}.import-tree-book h3{margin:0 0 10px;font-size:1.08rem}.import-tree-chapter{border-top:1px solid var(--plotline-line);padding:10px 0 0;margin-top:10px}.import-tree-chapter ul{margin:8px 0 0;color:var(--plotline-muted)}.import-scene-meta{display:block;margin-top:2px;color:var(--plotline-muted);font-size:.82rem}.import-mapping-summary{display:grid;gap:6px;border:1px solid rgba(184,118,43,.28);border-radius:8px;padding:10px 12px;margin-bottom:14px;background:rgba(251,236,211,.5);color:var(--plotline-muted);font-size:.9rem}.import-duplicate-confirm{border:1px solid rgba(184,118,43,.34);border-radius:8px;padding:12px 12px 12px 38px;background:rgba(251,236,211,.72)}.import-confirmation,.import-docs details{border:1px solid var(--plotline-line);border-radius:8px;padding:16px;background:rgba(255,255,255,.42)}.import-confirmation h3,.import-doc-grid h3{margin-top:0;font-size:1.05rem}.import-docs summary{cursor:pointer;font-weight:800}.import-doc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:14px}.import-message-list ul{max-height:16rem;overflow:auto}.scene-editor{max-width:1180px}.table{margin-bottom:0}.table th{color:var(--plotline-muted);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase}.narrow{width:90px;white-space:nowrap}.status-pill{display:inline-flex;align-items:center;width:fit-content;border:1px solid #c8d8d2;border-radius:999px;padding:2px 8px;color:var(--plotline-accent-dark);background:var(--plotline-soft);font-size:.78rem;font-weight:700;white-space:nowrap}.dashboard-summary-card{border-color:var(--plotline-line)}.dashboard-summary-body{padding:10px 12px}.dashboard-summary-label{margin-bottom:4px;font-size:.7rem;line-height:1.15}.dashboard-summary-value{display:block;font-size:1.45rem;line-height:1}.dashboard-summary-calm{border-color:rgba(47,111,99,.28);background:rgba(238,245,242,.62)}.dashboard-summary-mild{border-color:rgba(197,139,43,.32);background:rgba(255,248,232,.68)}.dashboard-summary-attention{border-color:rgba(142,80,103,.32);background:rgba(252,241,246,.7)}.dashboard-progress-card{border-color:rgba(47,111,99,.18);background:linear-gradient(180deg,#fff 0,rgba(238,245,242,.64) 100%)}.dashboard-progress-body{padding:12px 14px}.dashboard-progress-heading{margin-bottom:8px}.dashboard-progress-title{margin:0 0 2px;font-size:1.05rem;line-height:1.2}.dashboard-series-progress{height:7px;background:rgba(47,111,99,.1)}.dashboard-series-progress .progress-bar{background:linear-gradient(90deg,var(--plotline-accent),#6fa99b)}.dashboard-progress-source{border-color:rgba(47,111,99,.2);color:var(--plotline-accent-dark);background:rgba(238,245,242,.9)}.dashboard-book-title-block h3{line-height:1.16}.dashboard-book-title-block a{color:var(--plotline-ink);text-decoration-color:rgba(47,111,99,0.35)}.dashboard-book-subtitle{color:var(--plotline-muted);font-size:.95rem;line-height:1.25}.dashboard-status-pill{border-color:var(--dashboard-status-border,#c8d8d2);color:var(--dashboard-status-ink,var(--plotline-accent-dark));background:var(--dashboard-status-bg,var(--plotline-soft))}.dashboard-status-published{--dashboard-status-border:rgba(47, 111, 99, 0.32);--dashboard-status-bg:#e7f2ed;--dashboard-status-ink:#22534a}.dashboard-status-drafting{--dashboard-status-border:rgba(184, 118, 43, 0.35);--dashboard-status-bg:#fff2dd;--dashboard-status-ink:#7b4b12}.dashboard-status-planning{--dashboard-status-border:rgba(51, 117, 155, 0.3);--dashboard-status-bg:#e9f3f8;--dashboard-status-ink:#245b78}.dashboard-status-outlining,.dashboard-status-research{--dashboard-status-border:rgba(103, 80, 164, 0.26);--dashboard-status-bg:#f0edf8;--dashboard-status-ink:#51417c}.dashboard-status-revising{--dashboard-status-border:rgba(123, 82, 148, 0.3);--dashboard-status-bg:#f4eefa;--dashboard-status-ink:#5f3e73}.dashboard-status-editing{--dashboard-status-border:rgba(68, 75, 130, 0.3);--dashboard-status-bg:#eceef8;--dashboard-status-ink:#343b72}.dashboard-status-proofreading{--dashboard-status-border:rgba(43, 130, 123, 0.3);--dashboard-status-bg:#e6f5f2;--dashboard-status-ink:#23625d}.dashboard-status-ready{--dashboard-status-border:rgba(185, 142, 30, 0.34);--dashboard-status-bg:#fff6d8;--dashboard-status-ink:#765a0f}.dashboard-status-paused{--dashboard-status-border:rgba(102, 113, 123, 0.28);--dashboard-status-bg:#f0f2f1;--dashboard-status-ink:#56616b}.dashboard-status-archived{--dashboard-status-border:rgba(139, 80, 86, 0.28);--dashboard-status-bg:#f3eded;--dashboard-status-ink:#76474d}.dashboard-attention-soft{border-color:rgba(102,113,123,.24);color:#56616b;background:#f3f4f2}.order-buttons{display:flex;gap:6px}.purpose-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:8px;max-height:260px;overflow:auto;padding:10px;border:1px solid var(--plotline-line);border-radius:8px;background:#fcfcfb}.purpose-check{display:flex;align-items:center;gap:8px;font-size:.92rem}.timeline-filter{display:flex;align-items:center;gap:8px;min-width:min(420px,100%)}.workspace-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:0;align-items:start;--timeline-inspector-width:min(40vw, 560px)}.workspace-layout.inspector-drawer-open{grid-template-columns:minmax(420px,1fr) 10px minmax(420px,var(--timeline-inspector-width));gap:12px}.timeline-workspace{min-width:0;max-width:100%}.timeline-inspector-resizer{position:sticky;top:76px;z-index:25;width:10px;height:calc(100vh - 96px);border-radius:999px;cursor:col-resize;background:linear-gradient(180deg,rgba(47,111,99,.16),rgba(47,111,99,.04))}.timeline-inspector-resizer::before{content:"";display:block;width:2px;height:48px;margin:18px auto;border-radius:999px;background:var(--plotline-accent);opacity:.55}.timeline-inspector-resizer:focus-visible,.timeline-inspector-resizer:hover{background:rgba(47,111,99,.16)}body.timeline-inspector-resizing{cursor:col-resize;user-select:none}.pacing-panel{margin-top:14px;margin-bottom:0;border:1px solid var(--plotline-line);border-radius:8px;padding:14px;background:#fff;box-shadow:0 10px 24px rgba(30,37,43,.04)}.pacing-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.pacing-heading h2{margin:0;font-size:1.1rem}.metric-graph-stack{display:grid;gap:10px;max-width:100%;overflow-x:auto;overflow-y:hidden;overscroll-behavior-x:contain;padding-bottom:4px}.metric-graph-row{display:grid;grid-template-columns:150px 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