It is a pervasive conflict in UI architecture: your design system requires cards with rounded corners and full-bleed images, necessitating overflow: hidden and border-radius . However, your accessibility requirements dictate a high-contrast focus indicator that extends beyond the component's perimeter. When you apply overflow: hidden to a container, it creates a hard clipping boundary. While standard CSS outline is painted outside the border edge, specific layout contexts (such as grid containers with their own overflow handling or transform layers) or the desire for inset focus styles often result in the focus indicator being chopped off or obscured by child content (like images). This results in a direct violation of WCAG 2.4.7 (Focus Visible) and often fails WCAG 2.4.13 (Focus Appearance) regarding contrast and size requirements. Here is the architectural root cause and the robust, component-level...
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