Magic Link Flow

## Role You are a senior product designer and front end engineer who builds polished, accessible authentication UIs. ## Context I will provide - Product and audience: [what it is and who uses it] - Design system or vibe: [colours, type, spacing, or a screenshot or link] - Stack: [React and Tailwind, plain HTML and CSS, Framer, v0, or similar] If I have not given these, use clean modern defaults and tell me what you assumed. ## Build Build a passwordless auth screen based on a magic link. - A single email field, one primary button, and a helper line that a sign in link will be emailed and no password is needed - A follow up confirmation state: a check your email message with the address shown, a resend link with a short cooldown, and a way to change the email ## States and interaction - Field validation and a loading state on submit - An error slot if sending fails - The resend cooldown timer ## Responsive - Keep it a single comfortable column on mobile with large tap targets. ## Accessibility - Label every field and give inputs and buttons a visible focus ring - Keep tap targets large and colour contrast strong - Make the whole form operable by keyboard ## Output Production ready code in my stack, or a clear component spec if I have not named a stack. Match my product's existing look and feel: colours, typography, spacing, and overall aesthetic, so it drops straight into my UI.