Magic link login

// Copyright (c) 2026 Bruno Delorence. MIT License.'use client';import {  useEffect,  useEffectEvent,  useId,  useLayoutEffect,  useRef,  useState,  type CSSProperties,  type FormEvent,  type KeyboardEvent as ReactKeyboardEvent,  type PointerEvent as ReactPointerEvent,} from 'react';import {  BackArrow,  Badge,  Envelope,  InboxArt,  KeyGlyph,  PasskeyGlyph,  PhoneGlyph,

// Copyright (c) 2026 Bruno Delorence. MIT License.'use client';import { useEffect, useRef, useState, type PointerEvent as ReactPointerEvent } from 'react';import { DeleteIcon, EmojiIcon, MicIcon, ShiftIcon } from './art';import styles from './magic-link-login.module.css';/* * The drawn on-screen keyboard: letters, then numbers and punctuation (123), then symbols (#+=), * with shift, delete, space and return. Its keys are buttons that never take the focus (a press * keeps the caret in the field) and stay out of the tab order: the real keyboard types into the * field directly, and lights the key it matches. A pressed letter shows its callout above the * key; delete repeats while held. */export type Layer = 'letters' | 'numbers' | 'symbols';export type KeyAction =  | { kind: 'char'; value: string }  | { kind: 'shift' }  | { kind: 'delete' }  | { kind: 'layer'; to: Layer }  | { kind: 'return' };

// Copyright (c) 2026 Bruno Delorence. MIT License.'use client';import styles from './magic-link-login.module.css';/* The two hero objects are transparent raster 3D renders. UI icons and the live unread * count stay vector so they remain crisp and respond to the flow's state. *//** The welcome wordmark, kept as crisp live type above the rendered object. */export function Wordmark() {  return (    <span className={styles.wordmark} aria-hidden="true">      OVIA    </span>  );}/** The green glass hand, phone and floating agreement sheets, rendered in 3D. */export function WelcomeArt() {  return (    <img      className={styles.welcomeArt}      src="/experiments/magic-link-login/welcome-3d-v1.webp"

'use client';import { useCallback, useEffect, useRef, useState } from 'react';/* * When a demo may play on its own: while part of it is on screen and the tab is visible, never * under reduced motion, and not while the reader is using it. `take()` hands it to the reader; it * takes back over `idle` ms after their last input. */export function useAutoplay<T extends HTMLElement>(idle = 6000) {  const ref = useRef<T>(null);  const [visible, setVisible] = useState(false);  const [reduced, setReduced] = useState(true);  const [taken, setTaken] = useState(false);  const timer = useRef(0);  useEffect(() => {    const element = ref.current;    if (!element) return;    let onScreen = false;    const update = () => setVisible(onScreen && !document.hidden);    const observer = new IntersectionObserver(      ([entry]) => {        onScreen = entry.isIntersecting;

/* Magic link login (magic-link-login.tsx): a quiet stage with a phone in its middle. The phone's   screen is 390 × 844 and every size inside it is in its own points (px); the whole phone is   scaled down, never re-laid out, to fit a smaller stage.   Colours are the tokens below, light-dark(light, dark) where the two differ: the component takes   the color-scheme it inherits from the page (light unless the page says otherwise), or the one   its colorScheme prop sets (data-color-scheme). The art and the phone's green frame keep their   own colours on both.   Motion. Screens push and pop by transforms on the same iOS-like curve; the keyboard rises and   falls with them; the badge pops on a small overshoot. Under reduced motion, everything   switches at once and nothing shakes or spins. */.root {  /* The stage. */  --stage: #fff;  /* Welcome: a vertical green gradient, its wordmark and its words. */  --welcome-top: #75e06c;  --welcome-bottom: #cbff8b;  --brand: #1d6b18;  --ink: #0a0a0a;  --ink-2: #111;  /* The white button and the round ones on the welcome, and their lift. */  --surface: #fff;