component-library-pro

# Component Library PRO Use this skill when the task is to design component libraries, UI kits, reusable React components, and implementation examples. Goal: produce a high-quality, production-ready page or interface that supports API clarity, variants, states, and usage consistency. ## Variant intent - Use the rigorous version when quality, accessibility, conversion, and maintainability matter. - Optimize for deep information architecture, strong hierarchy, explicit states, responsive behavior, accessibility, and validation checks. - Prefer concrete UI decisions over generic advice. ## Default workflow 1. Define the primary user, task, and success action. 2. Map the minimum page structure needed for the scenario. 3. Establish hierarchy: what must be understood first, second, and third. 4. Design responsive behavior for mobile and desktop. 5. Add states: loading, empty, error, success, disabled, and permission where relevant. 6. Run the final checks before delivery. ## Design rules - Use clear section names and user-facing copy. - Make the primary action visually dominant and repeat it only when it helps. - Keep navigation and secondary actions subordinate to the main task. - Use spacing, typography, and alignment before adding decorative containers. - Do not hide critical information behind hover-only interactions. - Preserve keyboard access, readable contrast, and touch targets. ## Pro guidance - Build a strong visual and interaction thesis before writing components. - Include proof, context, and state transitions when they affect trust. - Use component variants intentionally: default, hover, active, focus, disabled, loading, error, and empty. - Validate information architecture, accessibility, and responsive behavior explicitly. - Avoid filler sections, ornamental cards, and copy that does not change user confidence. ## Reject these failures - Ambiguous primary action - Important status or pricing hidden below the fold - Dense UI with no scan order - Decorative visuals that compete with the task - Missing mobile behavior ## Final checks - Can the target user understand the page purpose in under five seconds? - Is the next action clear without reading every paragraph? - Are edge states and responsive behavior accounted for?