diff --git a/packages/tldraw/src/components/ToolsPanel/ToolsPanel.tsx b/packages/tldraw/src/components/ToolsPanel/ToolsPanel.tsx
index d9b891386..a18a2a7d7 100644
--- a/packages/tldraw/src/components/ToolsPanel/ToolsPanel.tsx
+++ b/packages/tldraw/src/components/ToolsPanel/ToolsPanel.tsx
@@ -1,12 +1,13 @@
 import * as React from 'react'
 import { styled } from '~styles'
 import type { TDSnapshot } from '~types'
-import { useMediaQuery, useTldrawApp } from '~hooks'
+import { useTldrawApp } from '~hooks'
 import { StatusBar } from './StatusBar'
 import { BackToContent } from './BackToContent'
 import { PrimaryTools } from './PrimaryTools'
 import { ActionButton } from './ActionButton'
 import { DeleteButton } from './DeleteButton'
+import { breakpoints } from '~components/breakpoints'
 
 const isDebugModeSelector = (s: TDSnapshot) => s.settings.isDebugMode
 const dockPositionState = (s: TDSnapshot) => s.settings.dockPosition
@@ -19,61 +20,20 @@ export const ToolsPanel = React.memo(function ToolsPanel({ onBlur }: ToolsPanelP
   const app = useTldrawApp()
   const isDebugMode = app.useStore(isDebugModeSelector)
   const dockPosition = app.useStore(dockPositionState)
-  const isMobile = useMediaQuery('(max-width: 900px)')
 
-  const bottomStyle = {
-    width: '100%',
-    height: 'min-content',
-    left: 0,
-    right: 0,
-    bottom: isDebugMode ? 40 : 0,
-  }
-  const topStyle = {
-    width: '100%',
-    height: 'min-content',
-    left: 0,
-    right: 0,
-    top: isMobile ? 60 : 10,
-  }
-  const rightStyle = { width: 'min-content', height: '100%', right: 0 }
-  const leftStyle = { width: 'min-content', height: '100%', left: 10 }
-
-  const toolStyle = () => {
-    switch (dockPosition) {
-      case 'bottom':
-        return bottomStyle
-      case 'left':
-        return leftStyle
-      case 'right':
-        return rightStyle
-      case 'top':
-        return topStyle
-      default:
-        return bottomStyle
-    }
-  }
-  const style = toolStyle()
-  const centerWrapStyle =
-    dockPosition === 'bottom' || dockPosition === 'top'
-      ? { gridRow: 1, gridColumn: 2 }
-      : { gridRow: 2, gridColumn: 1 }
-  const primaryToolStyle = dockPosition === 'bottom' || dockPosition === 'top' ? 'row' : 'column'
+  const orientation =
+    dockPosition === 'bottom' || dockPosition === 'top' ? 'horizontal' : 'vertical'
 
   return (
     <StyledToolsPanelContainer
-      style={{
-        ...style,
-      }}
+      side={dockPosition}
       onBlur={onBlur}
+      bp={breakpoints}
+      debug={isDebugMode}
     >
-      <StyledCenterWrap
-        id="TD-Tools"
-        style={{
-          ...centerWrapStyle,
-        }}
-      >
+      <StyledCenterWrap id="TD-Tools" orientation={orientation}>
         <BackToContent />
-        <StyledPrimaryTools style={{ flexDirection: primaryToolStyle }}>
+        <StyledPrimaryTools orientation={orientation}>
           <ActionButton />
           <PrimaryTools />
           <DeleteButton />
@@ -104,6 +64,52 @@ const StyledToolsPanelContainer = styled('div', {
   '& > div > *': {
     pointerEvents: 'all',
   },
+  variants: {
+    debug: {
+      true: {},
+      false: {},
+    },
+    bp: {
+      mobile: {},
+      small: {},
+      medium: {},
+      large: {},
+    },
+    side: {
+      top: {
+        width: '100%',
+        height: 'min-content',
+        left: 0,
+        right: 0,
+        top: 60,
+      },
+      right: { width: 'min-content', height: '100%', right: 0 },
+      bottom: {
+        width: '100%',
+        height: 'min-content',
+        left: 0,
+        right: 0,
+        bottom: 0,
+      },
+      left: { width: 'min-content', height: '100%', left: 10 },
+    },
+  },
+  compoundVariants: [
+    {
+      side: 'top',
+      bp: 'large',
+      css: {
+        top: 10,
+      },
+    },
+    {
+      side: 'bottom',
+      debug: true,
+      css: {
+        bottom: 40,
+      },
+    },
+  ],
 })
 
 const StyledCenterWrap = styled('div', {
@@ -115,6 +121,12 @@ const StyledCenterWrap = styled('div', {
   justifyContent: 'center',
   flexDirection: 'column',
   gap: '$4',
+  variants: {
+    orientation: {
+      horizontal: { gridRow: 1, gridColumn: 2 },
+      vertical: { gridRow: 2, gridColumn: 1 },
+    },
+  },
 })
 
 const StyledStatusWrap = styled('div', {
@@ -131,4 +143,14 @@ const StyledPrimaryTools = styled('div', {
   display: 'flex',
   alignItems: 'center',
   gap: '$2',
+  variants: {
+    orientation: {
+      horizontal: {
+        flexDirection: 'row',
+      },
+      vertical: {
+        flexDirection: 'column',
+      },
+    },
+  },
 })
diff --git a/packages/tldraw/src/hooks/index.ts b/packages/tldraw/src/hooks/index.ts
index b81b6b17f..b55955477 100644
--- a/packages/tldraw/src/hooks/index.ts
+++ b/packages/tldraw/src/hooks/index.ts
@@ -5,4 +5,3 @@ export * from './useStylesheet'
 export * from './useFileSystemHandlers'
 export * from './useFileSystem'
 export * from './useTranslation'
-export * from './useMediaQuery'
diff --git a/packages/tldraw/src/hooks/useMediaQuery.ts b/packages/tldraw/src/hooks/useMediaQuery.ts
deleted file mode 100644
index 19a83c413..000000000
--- a/packages/tldraw/src/hooks/useMediaQuery.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import * as React from 'react'
-
-export function useMediaQuery(query: string) {
-  const [matches, setMatches] = React.useState(false)
-
-  React.useEffect(() => {
-    const media = window.matchMedia(query)
-    if (media.matches !== matches) {
-      setMatches(media.matches)
-    }
-    const listener = () => setMatches(media.matches)
-    window.addEventListener('resize', listener)
-    return () => window.removeEventListener('resize', listener)
-  }, [matches, query])
-
-  return matches
-}
-
-export default useMediaQuery
diff --git a/packages/tldraw/src/state/TldrawApp.ts b/packages/tldraw/src/state/TldrawApp.ts
index 59723126e..1b33ef22c 100644
--- a/packages/tldraw/src/state/TldrawApp.ts
+++ b/packages/tldraw/src/state/TldrawApp.ts
@@ -267,13 +267,13 @@ export class TldrawApp extends StateManager<TDSnapshot> {
 
   constructor(id?: string, callbacks = {} as TDCallbacks) {
     super(TldrawApp.defaultState, id, TldrawApp.version, (prev, next, prevVersion) => {
-      return {
-        ...next,
-        document: migrate(
-          { ...next.document, ...prev.document, version: prevVersion },
-          TldrawApp.version
-        ),
-      }
+      return migrate(
+        {
+          ...next,
+          document: { ...next.document, ...prev.document, version: prevVersion },
+        },
+        TldrawApp.version
+      )
     })
 
     this.callbacks = callbacks
@@ -282,10 +282,7 @@ export class TldrawApp extends StateManager<TDSnapshot> {
   /* -------------------- Internal -------------------- */
 
   protected migrate = (state: TDSnapshot): TDSnapshot => {
-    return {
-      ...state,
-      document: migrate(state.document, TldrawApp.version),
-    }
+    return migrate(state, TldrawApp.version)
   }
 
   protected onReady = () => {
@@ -297,10 +294,10 @@ export class TldrawApp extends StateManager<TDSnapshot> {
 
     try {
       this.patchState({
+        ...migrate(this.state, TldrawApp.version),
         appState: {
           status: TDStatus.Idle,
         },
-        document: migrate(this.document, TldrawApp.version),
       })
     } catch (e) {
       console.error('The data appears to be corrupted. Resetting!', e)
@@ -1232,10 +1229,7 @@ export class TldrawApp extends StateManager<TDSnapshot> {
     // Set the default page name to the localized version of "Page"
     doc.pages['page'].name = 'Page 1'
 
-    this.resetHistory()
-      .clearSelectHistory()
-      .loadDocument(migrate(doc, TldrawApp.version))
-      .persist({})
+    this.resetHistory().clearSelectHistory().loadDocument(TldrawApp.defaultDocument).persist({})
 
     return this
   }
@@ -1273,12 +1267,17 @@ export class TldrawApp extends StateManager<TDSnapshot> {
     // If it's a new document, do a full change.
     if (this.document.id !== document.id) {
       this.replaceState({
-        ...this.state,
+        ...migrate(
+          {
+            ...this.state,
+            document,
+          },
+          TldrawApp.version
+        ),
         appState: {
           ...this.appState,
           currentPageId: Object.keys(document.pages)[0],
         },
-        document: migrate(document, TldrawApp.version),
       })
       return this
     }
@@ -1340,12 +1339,11 @@ export class TldrawApp extends StateManager<TDSnapshot> {
 
     return this.replaceState(
       {
-        ...this.state,
+        ...migrate(
+          { ...this.state, document: { ...document, pageStates: currentPageStates } },
+          TldrawApp.version
+        ),
         appState: nextAppState,
-        document: {
-          ...migrate(document, TldrawApp.version),
-          pageStates: currentPageStates,
-        },
       },
       'merge'
     )
@@ -1358,7 +1356,7 @@ export class TldrawApp extends StateManager<TDSnapshot> {
   updateDocument = (document: TDDocument, reason = 'updated_document'): this => {
     const prevState = this.state
 
-    const nextState = { ...prevState, document: { ...prevState.document } }
+    let nextState = { ...prevState, document: { ...prevState.document } }
 
     if (!document.pages[this.currentPageId]) {
       nextState.appState = {
@@ -1399,9 +1397,10 @@ export class TldrawApp extends StateManager<TDSnapshot> {
       }
     }
 
-    nextState.document = migrate(nextState.document, nextState.document.version || 0)
-
-    return this.replaceState(nextState, `${reason}:${document.id}`)
+    return this.replaceState(
+      migrate(nextState, nextState.document.version || 0),
+      `${reason}:${document.id}`
+    )
   }
 
   /**
@@ -1437,22 +1436,21 @@ export class TldrawApp extends StateManager<TDSnapshot> {
     this.clearSelectHistory()
     this.session = undefined
 
-    this.replaceState(
-      {
-        ...TldrawApp.defaultState,
-        settings: {
-          ...this.state.settings,
-        },
-        document: migrate(document, TldrawApp.version),
-        appState: {
-          ...TldrawApp.defaultState.appState,
-          ...this.state.appState,
-          currentPageId: Object.keys(document.pages)[0],
-          disableAssets: this.disableAssets,
-        },
+    const state = {
+      ...TldrawApp.defaultState,
+      settings: {
+        ...this.state.settings,
       },
-      'loaded_document'
-    )
+      document,
+      appState: {
+        ...TldrawApp.defaultState.appState,
+        ...this.state.appState,
+        currentPageId: Object.keys(document.pages)[0],
+        disableAssets: this.disableAssets,
+      },
+    }
+
+    this.replaceState(migrate(state, TldrawApp.version), 'loaded_document')
     const { point, zoom } = this.camera
     this.updateViewport(point, zoom)
     return this
@@ -1476,7 +1474,7 @@ export class TldrawApp extends StateManager<TDSnapshot> {
     if (this.readOnly) return
     try {
       const fileHandle = await saveToFileSystem(
-        migrate(this.document, TldrawApp.version),
+        migrate(this.state, TldrawApp.version).document,
         this.fileSystemHandle
       )
       this.fileSystemHandle = fileHandle
@@ -4121,7 +4119,7 @@ export class TldrawApp extends StateManager<TDSnapshot> {
 
   getShapeUtil = TLDR.getShapeUtil
 
-  static version = 15.3
+  static version = 15.4
 
   static defaultDocument: TDDocument = {
     id: 'doc',
diff --git a/packages/tldraw/src/state/__snapshots__/TldrawApp.spec.ts.snap b/packages/tldraw/src/state/__snapshots__/TldrawApp.spec.ts.snap
index cd16ac0a4..f3baf2218 100644
--- a/packages/tldraw/src/state/__snapshots__/TldrawApp.spec.ts.snap
+++ b/packages/tldraw/src/state/__snapshots__/TldrawApp.spec.ts.snap
@@ -50,7 +50,7 @@ TldrawTestApp {
           "shapes": Object {},
         },
       },
-      "version": 15.3,
+      "version": 15.4,
     },
     "settings": Object {
       "dockPosition": "bottom",
@@ -201,7 +201,7 @@ TldrawTestApp {
           },
         },
       },
-      "version": 15.3,
+      "version": 15.4,
     },
     "settings": Object {
       "dockPosition": "bottom",
@@ -373,7 +373,7 @@ TldrawTestApp {
           "shapes": Object {},
         },
       },
-      "version": 15.3,
+      "version": 15.4,
     },
     "settings": Object {
       "dockPosition": "bottom",
diff --git a/packages/tldraw/src/state/data/migrate.ts b/packages/tldraw/src/state/data/migrate.ts
index c2b1c4496..f9e0f53dd 100644
--- a/packages/tldraw/src/state/data/migrate.ts
+++ b/packages/tldraw/src/state/data/migrate.ts
@@ -1,7 +1,8 @@
 /* eslint-disable @typescript-eslint/ban-ts-comment */
-import { Decoration, FontStyle, TDDocument, TDShapeType, TextShape } from '~types'
+import { Decoration, FontStyle, TDDocument, TDShapeType, TDSnapshot, TextShape } from '~types'
 
-export function migrate(document: TDDocument, newVersion: number): TDDocument {
+export function migrate(state: TDSnapshot, newVersion: number): TDSnapshot {
+  const { document, settings } = state
   const { version = 0 } = document
 
   if (!('assets' in document)) {
@@ -11,8 +12,8 @@ export function migrate(document: TDDocument, newVersion: number): TDDocument {
   // Remove unused assets when loading a document
   const assetIdsInUse = new Set<string>()
 
-  Object.values(document.pages).forEach(page =>
-    Object.values(page.shapes).forEach(shape => {
+  Object.values(document.pages).forEach((page) =>
+    Object.values(page.shapes).forEach((shape) => {
       const { parentId, children, assetId } = shape
 
       if (assetId) {
@@ -26,7 +27,7 @@ export function migrate(document: TDDocument, newVersion: number): TDDocument {
       }
 
       if (shape.type === TDShapeType.Group && children) {
-        children.forEach(childId => {
+        children.forEach((childId) => {
           if (!page.shapes[childId]) {
             console.warn('Encountered a parent with a missing child!', shape.id, childId)
             children?.splice(children.indexOf(childId), 1)
@@ -38,31 +39,31 @@ export function migrate(document: TDDocument, newVersion: number): TDDocument {
     })
   )
 
-  Object.keys(document.assets).forEach(assetId => {
+  Object.keys(document.assets).forEach((assetId) => {
     if (!assetIdsInUse.has(assetId)) {
       delete document.assets[assetId]
     }
   })
 
-  if (version === newVersion) return document
+  if (version === newVersion) return state
 
   if (version < 14) {
-    Object.values(document.pages).forEach(page => {
+    Object.values(document.pages).forEach((page) => {
       Object.values(page.shapes)
-        .filter(shape => shape.type === TDShapeType.Text)
-        .forEach(shape => (shape as TextShape).style.font === FontStyle.Script)
+        .filter((shape) => shape.type === TDShapeType.Text)
+        .forEach((shape) => (shape as TextShape).style.font === FontStyle.Script)
     })
   }
 
   // Lowercase styles, move binding meta to binding
   if (version <= 13) {
-    Object.values(document.pages).forEach(page => {
-      Object.values(page.bindings).forEach(binding => {
+    Object.values(document.pages).forEach((page) => {
+      Object.values(page.bindings).forEach((binding) => {
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
         Object.assign(binding, (binding as any).meta)
       })
 
-      Object.values(page.shapes).forEach(shape => {
+      Object.values(page.shapes).forEach((shape) => {
         Object.entries(shape.style).forEach(([id, style]) => {
           if (typeof style === 'string') {
             // @ts-ignore
@@ -95,8 +96,8 @@ export function migrate(document: TDDocument, newVersion: number): TDDocument {
     document.assets = {}
   }
 
-  Object.values(document.pages).forEach(page => {
-    Object.values(page.shapes).forEach(shape => {
+  Object.values(document.pages).forEach((page) => {
+    Object.values(page.shapes).forEach((shape) => {
       if (version < 15.2) {
         if (shape.type === TDShapeType.Image || shape.type === TDShapeType.Video) {
           shape.style.isFilled = true
@@ -117,9 +118,13 @@ export function migrate(document: TDDocument, newVersion: number): TDDocument {
     })
   })
 
+  if (version < 15.4) {
+    settings.dockPosition = 'bottom'
+  }
+
   // Cleanup
-  Object.values(document.pageStates).forEach(pageState => {
-    pageState.selectedIds = pageState.selectedIds.filter(id => {
+  Object.values(document.pageStates).forEach((pageState) => {
+    pageState.selectedIds = pageState.selectedIds.filter((id) => {
       return document.pages[pageState.id].shapes[id] !== undefined
     })
     pageState.bindingId = undefined
@@ -130,5 +135,5 @@ export function migrate(document: TDDocument, newVersion: number): TDDocument {
 
   document.version = newVersion
 
-  return document
+  return state
 }