patterns

The same thing should look and behave the same way everywhere, and follow platform convention where one exists.

Heuristic · Nielsen heuristics

Repeating visual treatments builds a language users learn once and apply everywhere.

UI foundation · Visual design

Signing in is a gate in front of the thing people came for, so every decision is about removing steps without removing safety.

Pattern · Account

The most scrutinised form in any product: total cost visible early, card entry forgiving, and failure states specific.

Pattern · Commerce

Group by the question people are trying to answer, decide one convention for saving, and treat defaults as the real design.

Pattern · Account

Multiple people in one document raises three questions: who else is here, who can do what, and what happens when two people change the same thing.

Pattern · Structure

The conventions phones have settled on, what each one is actually for, and where they break.

Pattern · Structure

A dashboard earns its place by supporting a decision. If nobody can name the decision, it is a report with a layout.

Pattern · Data