Redesigned sign-in page and improved return flow

We redesigned the sign-in page and improved the authentication flow around it. The updated page makes the main login options easier to understand, keeps social and email paths visually consistent, and gives users clearer routes to sign up or return home.

We also improved what happens after sign-in. When someone starts from a specific page or workflow and needs to authenticate, the app can remember the intended destination and send them back after login completes.

This is especially important for OAuth sign-in, where intermediate redirects can strip query parameters. The improved flow preserves the intended destination across the handoff and clears it once sign-in completes.