fixes to left side panel

docs/development/CENTRAL.md

@@ -89,3 +89,4 @@
 - [2025-12-17-184000_fix_draft_pool_ui](./devlog/2025-12-17-184000_fix_draft_pool_ui.md): Completed. Fixed "Your Pool" resizing bugs and removed unwanted hover animation.
 - [Customizable Deck Builder Layout](./devlog/2025-12-17-170000_customizable_deck_builder.md): Completed. Implemented switchable Vertical (Side-by-Side) and Horizontal (Top-Bottom) layouts, with an integrated, improved Land Station.
 - [Draft View Layout Selection](./devlog/2025-12-17-185000_draft_view_layout.md): Completed. Implemented Vertical/Horizontal layout selection for Draft View to match Deck Builder, optimizing screen space and preventing overlap.
+- [Fix Cube Sidebar Scrolling](./devlog/2025-12-18-004109_fix_cube_sidebar_scrolling.md): Completed. Adjusted sidebar max-height to ensure autonomous scrolling and button accessibility on tablet screens.

docs/development/devlog/2025-12-18-004109_fix_cube_sidebar_scrolling.md

@@ -0,0 +1,14 @@
+# Fix Cube Manager Sidebar Scrolling on Tablets
+
+## Context
+The user reported an issue on small tablet screens where the sticky sidebar in the Pack Generation UI (Cube Manager) cannot be scrolled to the bottom. The `max-height` of the sidebar was set to `100vh - 2rem`, which exceeds the actual visible viewport height when accounting for the application header (and potentially browser bars), causing the bottom of the sidebar (containing the critical "Generate Packs" button) to be clipped and inaccessible without scrolling the main page.
+
+## Changes
+- Modified `src/client/src/modules/cube/CubeManager.tsx` to adjust the sidebar `max-height`.
+- Changed `lg:max-h-[calc(100vh-2rem)]` to `lg:max-h-[calc(100vh-10rem)]`.
+- This calculation (~ 10rem) accounts for the header height (approx 5-6rem), footer height (approx 2.5rem), and margins, ensuring the sidebar fits completely within the visible viewport.
+- This ensures the `overflow-y-auto` property on the sidebar triggers correctly, allowing autonomous scrolling of the configuration panel regardless of the main page scroll position.
+
+## Verification
+- Verified layout structure in `App.tsx` and proper nesting.
+- The change applies to `lg` screens (desktop and horizontal tablet), where the sidebar is displayed as a sticky column.

src/client/src/modules/cube/CubeManager.tsx

@@ -456,7 +456,7 @@ export const CubeManager: React.FC<CubeManagerProps> = ({ packs, setPacks, avail
     <div className="h-full overflow-y-auto w-full flex flex-col lg:flex-row gap-8 p-4 md:p-6">
 
       {/* --- LEFT COLUMN: CONTROLS --- */}
-      <div className="w-full lg:w-1/3 lg:max-w-[400px] shrink-0 flex flex-col gap-4 lg:sticky lg:top-4 lg:self-start lg:max-h-[calc(100vh-2rem)] lg:overflow-y-auto custom-scrollbar p-1">
+      <div className="w-full lg:w-1/3 lg:max-w-[400px] shrink-0 flex flex-col gap-4 lg:sticky lg:top-4 lg:self-start lg:max-h-[calc(100vh-10rem)] lg:overflow-y-auto custom-scrollbar p-1">
         <div className="bg-slate-800 rounded-xl p-4 border border-slate-700 shadow-xl">
           {/* Source Toggle */}
           <div className="flex p-1 bg-slate-900 rounded-lg mb-4 border border-slate-700">