Frontend projects don't fail suddenly, they decay gradually. Well-defined conventions inside a project are usually not enough to stop it. Copy-paste, exceptions, overrides and "just this once" decisions accumulate. Entropy increases unless something actively resists it. UI libraries exist to slow it down, but most of them don't do as much as they could to limit its impact. If you've ever looked at a mature codebase and thought "how did we end up here?" - you've seen UI entropy in action.

Entropy is not a bug, it's a law. No UI system can eliminate it completely. The difference between systems is how clearly they shape it and how well they slow it down as projects grow. UI library constraints are not limitations, they introduce structure and clarity. Systems that hold up over time are the ones where those constraints are built in, not just documented or expected.

NebulaKit is a library that treats these problems as system-level constraints, not matters of convention, documentation or discipline. In NebulaKit, these rules are enforced by the component architecture itself, not left to best practices or team agreements. Semantic correctness is part of the component contract. Responsive behavior follows a single explicit model. Shared behavior is composed instead of duplicated. Component APIs reflect how things are built. Styling concerns are separated and scoped so they do not interfere with each other.

NebulaKit lets frontend projects grow over time, add more features and involve more developers without relying on everyone remembering rules or enforcing them manually.