The auro-counter component uses the spinbutton role to convey its purpose to assistive technologies. Key ARIA attributes include:

• role="spinbutton" — Identifies the element as a numeric spinner control.
• aria-valuenow — Reflects the current counter value.
• aria-valuemin — Reflects the minimum allowed value.
• aria-valuemax — Reflects the maximum allowed value.
• aria-label — Derived from the default slot content (counter label).

The increment and decrement buttons include accessible labels. Custom labels can be provided using the ariaLabel.minus and ariaLabel.plus slots to override the default button descriptions.

When a user interacts with the counter, the updated value is announced via the aria-valuenow attribute. Screen readers will announce the counter label and current value when the element receives focus.

When a counter is disabled, the aria-disabled attribute is set, and the increment/decrement buttons become inoperable. Screen readers will announce the disabled state to the user.

When used as a dropdown (isDropdown), the counter group inherits dropdown accessibility patterns. The ariaLabel.bib.close slot provides an accessible label for the close button in fullscreen mode.