Neon Panel UI Kit — bracket-cornered panels and buttons

A sci-fi console kit built on cut corners and open frames. There is no continuous border anywhere — four corner brackets mark the bounds and the rest stays open, which is what makes a HUD read as an overlay on the world rather than a window covering it. Chamfers do the rest: they read as machined metal where a border radius reads as a mobile app.

Two nine-slice panels — a bracket-cornered window frame with 16 px corners and a recessed inset frame with 12 px corners — cover almost every box a menu needs: dialogs, inventory grids, list backgrounds, tooltips and stat panels. There is no continuous border at all — four corner brackets mark the bounds and the rest is open, so the panel frames content without boxing it in. Both stretch cleanly to any size because the corners never scale and the centre is a flat fill.

On top of the panels sit four chamfered button states: default, hover, pressed and disabled. They are drawn on the same 144×36 base with 10 px corners, so you can swap the texture on a single button widget and get the whole interaction loop without moving a rectangle. The pressed state drops its face two pixels and removes the top highlight rather than just darkening, which is what makes a button feel clicked rather than merely recoloured.

Everything ships twice. The SVG sources are the files the kit was drawn in — open them, change the six deep space blue tones or the single cyan accent, and re-export. The PNG exports are flat, transparent and pre-scaled at 1x, 2x and 4x for engines that want bitmaps, with no premultiplied alpha and no baked-in shadow outside the sprite bounds.

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