Login Flow Skill A skill for generating mobile first login and authentication screens. Use this when the user wants a sign in experience for a mobile app, including phone + SMS verification, password based login, and social SSO options. Workflow 1. Read reference files first (see below) 2. Clarify auth method : phone/SMS, password, or social SSO 3. Checklist gate — verify P0 items before emitting <artifact 4. Build the HTML prototype with proper states (default, loading, error) 5. Wrap in <artifact tag referencing the output file Side Files references/checklist.md — P0/P1 acceptance criteria Output A single standalone HTML file implementing the login screen with: Labels above inputs (never placeholder only) Password field with show/hide toggle Social SSO buttons with SVG icons Error states below fields Loading spinner in primary CTA Touch targets minimum 44px Mobile First Constraints Viewport: 375px wide (iPhone standard) No horizontal scroll Safe area insets for notched devices Input keyboards: tel for phone, password for password fields

login-flow