Sammii — Design engineering

Design engineering by Sammii.

Spring physics, cursor-reactive colour, production components. Hand-built, zero dependencies.

01

Spring physics, not CSS transitions

Every motion integrates position and velocity every frame. Overshoot, damping, settle — motion that feels alive.

02

Cursor-reactive colour

A single pastel function maps pointer position to RGB. Borders, glows, fills — one palette, always in sync with you.

03

Hand-built, zero deps

No animation libraries, no UI kits. Just React refs, rAF, and physics primitives. One file per component.

Featured work

Signature interactions