# Layout Recreation Summary

## Overview
Completely recreated the application layout following the "Precision Racing Minimal" design philosophy from `docs/THEME.md`.

## Issues Fixed

### 1. Content Alignment
- **Issue**: Content was left-aligned instead of centered
- **Fix**: Added `alignItems="center"` to outer Box in ContentViewport
- **Result**: Content is now properly centered with `marginX="auto"`

### 2. Dev Toolbar Positioning
- **Issue**: Dev toolbar appearing below footer
- **Fix**: Wrapped footer in Box with `position="relative"` and `zIndex={50}`
- **Result**: Footer stays at bottom, dev toolbar floats above

### 3. Scroll Containment
- **Issue**: Nested scrollbars and improper scroll behavior
- **Fix**: Proper `overflow="hidden"` on parent, `overflowY="auto"` on content
- **Result**: Single scroll viewport, clean scrolling experience

## Key Changes

### 1. AppShell (`components/app/AppShell.tsx`)
- **Before**: Basic flex container with background
- **After**: 
  - Added `overflow="hidden"` to prevent body scroll issues
  - Applied cockpit-inspired gradient background
  - Ensures proper layout containment

### 2. ControlBar (`ui/ControlBar.tsx`)
- **Before**: 48px height, basic styling
- **After**:
  - Increased height to 56px for better visual presence
  - Enhanced backdrop blur from `backdrop-blur-md` to `backdrop-blur-xl`
  - Added subtle shadow for depth
  - Added padding (px={6}) for better spacing
  - Improved visual hierarchy with darker background (rgba(10, 10, 11, 0.95))

### 3. HeaderContentTemplate (`templates/layout/HeaderContentTemplate.tsx`)
- **Before**: Basic header layout
- **After**:
  - Added horizontal padding (px={6}) for consistent spacing
  - Enhanced border styling with explicit color
  - Maintains clean, cockpit-inspired navigation

### 4. ContentViewport (`ui/ContentViewport.tsx`)
- **Before**: 
  - Content area had its own scroll bars
  - Left-aligned content
  - Improper scroll containment
- **After**:
  - **Fixed scroll containment**: Proper `overflow="hidden"` on parent, `overflowY="auto"` on content
  - **Proper alignment**: Centered content with `marginX="auto"` and `maxWidth`
  - **Clean scrolling**: Single scroll viewport, no nested scrollbars
  - **Responsive**: Maintains `fullWidth` option for specific pages
  - **Consistent padding**: Uses padding map for standardized spacing

### 5. GlobalFooterTemplate (`templates/layout/GlobalFooterTemplate.tsx`)
- **Before**: Basic footer with minimal styling
- **After**:
  - Increased padding (paddingY={3}, paddingX={6})
  - Darker background with transparency (rgba(10, 10, 11, 0.95))
  - Subtle top border for visual separation
  - Consistent with header styling

### 6. GlobalSidebarTemplate (`templates/layout/GlobalSidebarTemplate.tsx`)
- **Before**: Basic sidebar
- **After**:
  - Enhanced gradient background (linear-gradient from #0d0d0e to #0a0a0b)
  - Maintains proper sticky positioning
  - Consistent with overall cockpit theme

### 7. RootAppShellTemplate (`templates/layout/RootAppShellTemplate.tsx`)
- **Before**: Basic layout orchestration
- **After**:
  - Improved overflow handling in main content area
  - Removed redundant background (transparent)
  - Maintains proper z-index layering
  - Ensures content viewport handles scrolling correctly

## Design Principles Applied

### From THEME.md:
1. **Matte dark surfaces**: All components use dark backgrounds with subtle gradients
2. **Thin, crisp separators**: Borders use `var(--ui-color-border-default)` and `var(--ui-color-border-muted)`
3. **Soft blue/cyan glows**: Maintained existing accent colors (Electric Blue, Telemetry Aqua)
4. **Instrument-grade feel**: All spacing and sizing follows consistent scale
5. **Minimal visual noise**: Removed unnecessary decorations, focused on function

### Layout Structure (Telemetry Workspace):
- **Header (ControlBar)**: Context + session controls (56px)
- **Sidebar (GlobalSidebar)**: Navigation rail (260px, sticky)
- **Main Content**: Centered, proper scrolling
- **Footer**: System status (56px)

## Scroll Behavior Fixes

### Before:
```
Body scroll → Content area scroll → Nested scrollbars
```

### After:
```
Body scroll disabled → Single viewport scroll
```

Key changes:
1. `AppShell`: `overflow="hidden"` on root
2. `ContentViewport`: Proper `overflowY="auto"` on content container
3. `RootAppShellTemplate`: Main area has `overflow="hidden"`, content has `overflowY="auto"`

## Visual Improvements

1. **Header**: Taller (56px vs 48px), better blur, subtle shadow
2. **Footer**: More prominent, better spacing
3. **Content**: Centered, clean scrolling, no alignment issues
4. **Sidebar**: Enhanced gradient, better visual depth
5. **Overall**: Consistent cockpit/dashboard aesthetic

## Testing Checklist

- [x] TypeScript compilation passes
- [x] ESLint passes with no warnings
- [x] Layout structure follows THEME.md
- [x] Scroll behavior is correct (no nested scrollbars)
- [x] Content is properly centered
- [x] Header and footer have consistent styling
- [x] Sidebar shows/hides correctly based on auth state
- [x] Responsive behavior maintained

## Files Modified

1. `apps/website/components/app/AppShell.tsx`
2. `apps/website/ui/ControlBar.tsx`
3. `apps/website/ui/TopNav.tsx`
4. `apps/website/ui/ContentViewport.tsx`
5. `apps/website/templates/layout/HeaderContentTemplate.tsx`
6. `apps/website/templates/layout/GlobalFooterTemplate.tsx`
7. `apps/website/templates/layout/GlobalSidebarTemplate.tsx`
8. `apps/website/templates/layout/RootAppShellTemplate.tsx`

## Next Steps

The layout is now ready for content implementation. All components follow the design system and provide a solid foundation for:
- Page templates
- Content components
- Interactive elements
- State management integration

The layout respects all architecture rules and provides a clean, professional racing interface.
