Mundo boceto: pantalla dibujada a mano

"use client";

import { useId, useState, type CSSProperties } from "react";

/** Mundo boceto: una pantalla dibujada a mano con trazo irregular (filtro SVG de ruido), tipografía manuscrita, notas adhesivas y un formulario que funciona. Pensado para prototipos que aún se pueden cambiar. React + TypeScript, sin dependencias. */
export type MundoBocetoProps = {
  className?: string;
  style?: CSSProperties;
};

const CSS = `
.gcmbo-root { box-sizing: border-box; container-type: inline-size; position: relative; width: 100%; padding: clamp(18px, 4cqi, 40px); background: #fbfaf5; background-image: linear-gradient(#e6efff 1px, transparent 1px), linear-gradient(90deg, #e6efff 1px, transparent 1px); background-size: 24px 24px; color: #1f2a44; font: 600 20px/1.2 "Caveat", "Bradley Hand", "Segoe Script", "Comic Sans MS", cursive; }
.gcmbo-root *, .gcmbo-root *::before, .gcmbo-root *::after { box-sizing: border-box; }
.gcmbo-root button, .gcmbo-root input { font: inherit; }
.gcmbo-root :focus-visible { outline: 3px dashed #d6405a; outline-offset: 4px; }
@media (prefers-reduced-motion: reduce) { .gcmbo-root * { transition-duration: .01ms !important; animation: none !important; } }
.gcmbo-svg { position: absolute; width: 0; height: 0; }
.gcmbo-frame { position: relative; max-width: 440px; margin: 0 auto; padding: 22px; border: 3px solid #1f2a44; border-radius: 6px 10px 5px 12px; background: #fff; filter: var(--gcmbo-f); transform: rotate(-.5deg); }
.gcmbo-nav { display: flex; align-items: center; justify-content: space-between; padding-bottom: 12px; margin-bottom: 14px; border-bottom: 3px solid #1f2a44; font-size: 26px; }
.gcmbo-dots { display: flex; gap: 6px; }
.gcmbo-dots i { width: 14px; height: 14px; border: 2.5px solid #1f2a44; border-radius: 50%; }
.gcmbo-h { margin: 0 0 6px; font-size: 32px; line-height: 1; }
.gcmbo-img { display: grid; place-items: center; height: 96px; margin: 10px 0 14px; border: 3px solid #1f2a44; border-radius: 4px 8px 3px 7px; background: repeating-linear-gradient(135deg, transparent 0 8px, #dfe6f5 8px 10px); position: relative; }
.gcmbo-img::before, .gcmbo-img::after { content: ""; position: absolute; left: 8px; right: 8px; top: 50%; height: 3px; background: #1f2a44; opacity: .7; }
.gcmbo-img::before { transform: rotate(18deg); }
.gcmbo-img::after { transform: rotate(-18deg); }
.gcmbo-f { display: grid; gap: 12px; }
.gcmbo-f label { display: block; margin-bottom: 4px; }
.gcmbo-in { width: 100%; height: 42px; padding: 0 12px; border: 3px solid #1f2a44; border-radius: 5px 9px 4px 8px; background: #fff; color: #1f2a44; outline: 0; }
.gcmbo-in:focus-visible { background: #fff7c2; }
.gcmbo-in::placeholder { color: #8d97b3; }
.gcmbo-go { min-height: 46px; border: 3px solid #1f2a44; border-radius: 6px 10px 5px 11px; background: #ffd23f; color: #1f2a44; font-weight: 700; font-size: 24px; cursor: pointer; box-shadow: 3px 3px 0 #1f2a44; transition: transform .1s, box-shadow .1s; }
.gcmbo-go:active { transform: translate(3px, 3px); box-shadow: none; }
.gcmbo-note { position: absolute; z-index: 2; padding: 10px 12px 12px; background: #fff2a8; color: #5a4a00; font-size: 19px; line-height: 1.1; box-shadow: 0 8px 12px -6px rgba(0, 0, 0, .35); }
.gcmbo-n1 { right: -4px; top: 20px; width: 150px; transform: rotate(5deg); }
.gcmbo-n2 { left: -6px; bottom: 24px; width: 140px; background: #ffc4d4; color: #7a1a3a; transform: rotate(-4deg); }
.gcmbo-ok { display: grid; gap: 6px; justify-items: center; padding: 18px 8px; text-align: center; }
@container (max-width: 640px) { .gcmbo-n1, .gcmbo-n2 { position: static; width: auto; margin: 12px auto 0; display: block; max-width: 300px; } }`;

export function MundoBoceto({ className = "", style }: MundoBocetoProps) {
  const uid = useId().replace(/[^a-zA-Z0-9]/g, "");
  const fid = `gcmbo-f-${uid}`;
  const [done, setDone] = useState(false);
  const [email, setEmail] = useState("");
  return (
    <div className={`gcmbo-root ${className}`} style={{ "--gcmbo-f": `url(#${fid})`, ...style } as CSSProperties}>
      <style>{CSS}</style>
      <svg className="gcmbo-svg" aria-hidden="true" focusable="false">
        <filter id={fid} x="-2%" y="-2%" width="104%" height="104%">
          <feTurbulence type="fractalNoise" baseFrequency="0.03" numOctaves="2" seed="5" result="n" />
          <feDisplacementMap in="SourceGraphic" in2="n" scale="3.5" />
        </filter>
      </svg>
      <div className="gcmbo-frame">
        <div className="gcmbo-nav">
          <span>MiApp</span>
          <span className="gcmbo-dots" aria-hidden="true"><i /><i /><i /></span>
        </div>
        <h3 className="gcmbo-h">Ordena tu semana</h3>
        <div className="gcmbo-img" role="img" aria-label="Aquí irá una imagen" />
        {done ? (
          <div className="gcmbo-ok" role="status">
            <b style={{ fontSize: 30 }}>¡Anotado!</b>
            <span>Te avisaremos en cuanto abramos.</span>
            <button className="gcmbo-go" style={{ padding: "0 16px" }} type="button" onClick={() => { setDone(false); setEmail(""); }}>Otra vez</button>
          </div>
        ) : (
          <form className="gcmbo-f" onSubmit={(e) => { e.preventDefault(); if (email.includes("@")) setDone(true); }}>
            <div>
              <label htmlFor={`${uid}-e`}>Tu correo</label>
              <input id={`${uid}-e`} className="gcmbo-in" type="email" placeholder="nombre@correo.com" value={email} onChange={(e) => setEmail(e.target.value)} />
            </div>
            <button className="gcmbo-go" type="submit">Quiero entrar</button>
          </form>
        )}
      </div>
      <p className="gcmbo-note gcmbo-n1">¿Botón más grande?</p>
      <p className="gcmbo-note gcmbo-n2">Falta la foto del producto</p>
    </div>
  );
}

npx shadcn@latest add https://www.gassierconsulting.com/r/mundo-boceto

import { MundoBoceto } from "./mundo-boceto";

export default function Ejemplo() {
  return <MundoBoceto />;
}