I've fixed the admin page layout by:

1. Fixed Sidebar: The sidebar is now properly positioned on the left side and remains fixed
2. Proper Content Layout: Used SidebarInset to create the main content area that sits to the right of the sidebar
3. Header Structure: Added a proper header section with the sidebar trigger, title, and generate report button
4. Main Content Area: Created a scrollable main content area that contains all the dashboard content
5. Responsive Design: The layout now properly adapts to different screen sizes using the shadcn sidebar component1

The layout now follows the proper sidebar pattern with:

• Left sidebar that can be collapsed/expanded
• Fixed header with navigation trigger
• Main content area that scrolls independently
• Proper spacing and responsive behavior

The sidebar will automatically collapse on mobile devices and can be toggled using the hamburger menu button in the header.

I've updated the admin page layout to:

1. Removed SidebarInset: This was causing the absolute positioning and overlap issues
2. Used Flexbox Layout: The main container now uses flex with the sidebar and content area as flex children
3. Relative Positioning: The sidebar now uses relative positioning and sits naturally beside the content
4. No Overlap: The content area (flex-1) takes up the remaining space without overlapping the sidebar
5. Clean Side-by-Side Layout: The sidebar and main content now sit properly side by side without any positioning conflicts

The layout now has:

• Sidebar on the left with natural flow
• Main content area on the right that takes up remaining space
• No absolute positioning or overlapping elements
• Proper responsive behavior when the sidebar collapses