The rail's controls grouped into categories that fold up like the 3D-preview dock, with the 3D preview moved back in as one of the sections. Each opens a faithful editor mock (blush nav + new wordmark, real categories) — drag the box to rotate, drag the fold slider, click headers to collapse.
Categories used: 3D preview · Dimensions (units, outer/inner, L/W/H, thickness, bleed) · Options (thumb notch, window, euro) · Layers · Print & Cut · Paper fit · Export.
One vertical list; click any section header to expand/collapse, and several can stay open at once. Each header shows a live summary (e.g. the current size). “Collapse all” at the top.
A vertical icon rail; click an icon to show that category, others hide. Collapse the panel (») to leave just the icons and reclaim canvas. Most space-efficient — like Figma/Blender.
Each category is a bordered card styled exactly like the floating 3D-preview dock; collapse any to a mustard pill. The most literal take on “make the rail like the 3D preview thing.”
Same cards as C, but no rail panel — no background, no left border. The canvas goes full width and the category cards float over it (top-right), exactly like the current 3D dock but for every section. Collapse any to a pill.
My lean: A (accordion) for the cleanest everyday use, or C (dock cards) if you want it to visually echo the 3D dock. B is best if reclaiming canvas space is the priority. These are Desktop mockups — nothing in the repo.