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Add the "Login" component from notboring to my project.
It is licensed for use in my projects — notboring.dev/license. Please:
1. Create the component at a sensible path for this
project, named Login, from the source below.
2. Install what it needs: npm i framer-motion
3. Add the CSS to the project's stylesheet.
4. THE PART THAT NEEDS YOUR JUDGMENT. The CSS reads
these custom properties and does not define them:
--card
--font-ui
--ink
--ink-3
--ink-4
--ink-5
--ink-rgb
--on-ink
They are notboring's design tokens. Map each one to
whatever this project already uses for the same
job — its own ink, ground, surface and UI font —
rather than defining them as new globals. If the
project has no equivalent, define it locally on
the component's own root so nothing leaks out.
Anything ending -rgb wants three bare numbers,
because the CSS builds rgba() from it.
Keep the comments. They say why the numbers are what
they are, and they are most of what makes this worth
copying rather than rewriting.
--- Login.tsx ---
import { useEffect, useLayoutEffect, useRef, useState } from "react";
import { AnimatePresence, motion } from "framer-motion";
/* ══ Login ════════════════════════════════════════════════
Two ways in, and one of them has two steps.
TWO STEPS IN ONE CARD, AND THE CARD IS THE ONLY THING THAT
MOVES. The usual build swaps one form for another — a route,
a second modal, a new card — and the eye has to find the new
thing and confirm it is still the same task. Here the card
stays where it is, its contents slide through it, and its
HEIGHT follows what is in it: never taller than the step it
is showing, so the shrink to six boxes is part of the move
rather than a gap under them.
The height is a tween on a MEASURED number, not a transition
on `auto`. Auto cannot be interpolated, and the max-height
trick is a guess that is wrong at one end of every move. The
incoming step is measured the moment it exists, in a layout
effect, and the card goes there.
THE PROVIDERS ARE MONOCHROME. The G and the apple are drawn
here in the block's own ink rather than in their owners'
colors, because a four-color mark is the loudest thing on
The rest — the source and its comments — is what you are buying.