Make focus indicators in Desktop Modeler more obvious (a11y)

[lmbateman]

Problem you would like to solve

When tabbing through the Desktop Modeler header and footer, the current focus is not always visible, and even when it is, it is often too subtle.

Proposed solution

• The focused element should always be indicated.
• The focus indicator should be obvious (e.g., by meeting contrast guidelines).

This may require some visual design work.

Alternatives considered

Leave the focus indicators as they are.

Additional context

The focus is on Camunda 7 in the footer. If you're not following along with the tabs, it's easy to miss.

[abdul99ahad]

I’ve added my comments to the Figma designs, reflecting the focus indicator improvements I implemented in the focus-indicators branch.

cc: @lmbateman

[nikku]

@lmbateman you discovered some follow-ups to this topic. Could you create a follow-up issue that allows us to incorporate these?

I see this issue as v0.1 in our focus indicators initiative, let's ensure that v1 delivers, some day.