Fields ask plainly: label above, help below, errors in sentences. Focus is always the accent ring — never a glow, never a color change alone. An inset hairline at rest, and a radius off the ladder (--r-sm for controls, --r-md for the wells they sit in).
Text field
As it appears on your invoices.
The ask field
One field does what a search box and a chat box did in two. The mark sits where a magnifier would; ⌘K summons it anywhere.
⌘K
Choice — decide once
Draft replies overnight
Send without asking
✓Email me the morning brief
Hit targets: 44px touch, 30px pointer. A control that changes the team’s permissions always restates itself in a sentence first.