05Side summary that stacks up as you type

<main class="stage">
  <section class="sp is-demo" id="sp" aria-label="Delivery details entry steps">
    <div class="sp__bar">
      <p class="sp__h">Delivery details</p>
      <p class="sp__cnt" id="sp-step">2 / 3 steps</p>
    </div>
    <div class="sp__cols">
      <div class="sp__form">
        <div class="sp__f" data-f="1">
          <span class="sp__num" aria-hidden="true">1</span>
          <input class="sp__inp" id="sp-i1" value="Hong Gildong" aria-label="Recipient" placeholder="Hong Gildong">
        </div>
        <div class="sp__f is-current" data-f="2">
          <span class="sp__num" aria-hidden="true">2</span>
          <input class="sp__inp" id="sp-i2" value="[email protected]" aria-label="Email" placeholder="[email protected]">
        </div>
        <div class="sp__f" data-f="3">
          <span class="sp__num" aria-hidden="true">3</span>
          <input class="sp__inp" id="sp-i3" value="+1 555 0134" aria-label="Phone" placeholder="+1 555 0134">
        </div>
      </div>
      <div class="sp__side" aria-live="polite">
        <ul class="sp__list">
          <li class="sp__row" data-row="1">
            <span class="sp__k">Recipient</span>
            <span class="sp__v"><span class="sp__v0">—</span><span class="sp__v1">Hong Gildong</span></span>
            <button class="sp__fix" type="button">Edit</button>
          </li>
          <li class="sp__row" data-row="2">
            <span class="sp__k">Email</span>
            <span class="sp__v"><span class="sp__v0">—</span><span class="sp__v1">[email protected]</span></span>
            <button class="sp__fix" type="button">Edit</button>
          </li>
          <li class="sp__row" data-row="3">
            <span class="sp__k">Phone</span>
            <span class="sp__v"><span class="sp__v0">—</span><span class="sp__v1">+1 555 0134</span></span>
            <button class="sp__fix" type="button">Edit</button>
          </li>
        </ul>
      </div>
    </div>
  </section>
</main>

@use "sass:color";
@use "../../../../site/static/demo-tokens" as *;

$duration: $dur-quick;
$easing: $ease-spring;
$color: $subject-blue;

@include stage($stage-ink);

$line: color.mix($subject-cream, $stage-ink, 16%);
$soft: color.mix($subject-cream, $stage-ink, 8%);

.sp {
  box-sizing: border-box;
  width: min(320px, 92vw);
  padding: $sp-3;
  border: 1px solid $line;
  border-radius: $r-card;
  background: $stage-ink;
  color: $subject-cream;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 12px;
  line-height: 1.3;
}

.sp__bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: $sp-2;
  margin: 0 0 $sp-2;
}
.sp__h { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .04em; color: rgba(255, 255, 255, .56); }
.sp__cnt { margin: 0; font-size: 11px; font-weight: 700; color: $subject-blue-light; }

.sp__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: $sp-3;
}

// ── 왼쪽: 단계 칸 ────────────────────────────────
.sp__form { display: grid; gap: $sp-2; align-content: start; }
.sp__f {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: $sp-2;
  align-items: center;
}
.sp__num {
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1px solid $line;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
  color: rgba(255, 255, 255, .5);
  transition: background-color $duration $easing, border-color $duration $easing, color $duration $easing;
}
.sp__inp {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: $sp-1;
  border: 1px solid $line;
  border-radius: $r-sm;
  background: $soft;
  color: $subject-cream;
  font-family: inherit;
  font-size: 12px;
  line-height: 1.3;
}
.sp__inp:focus-visible { outline: 2px solid $color; outline-offset: 1px; }
// 현재 단계 표시 — 고치기로 돌아온 단계가 어디인지 번호와 테두리로 보인다
.sp__f.is-current .sp__num { border-color: $subject-blue-deep; background: $subject-blue-deep; color: $subject-cream; }
.sp__f.is-current .sp__inp { border-color: $color; }

// ── 오른쪽: 요약 패널 ────────────────────────────
.sp__side { min-width: 0; border-left: 1px solid $line; padding-left: $sp-2; }
.sp__list { display: grid; gap: $sp-2; margin: 0; padding: 0; list-style: none; align-content: start; }
.sp__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0 $sp-1;
  align-items: center;
}
.sp__k { grid-column: 1 / -1; font-size: 10px; color: rgba(255, 255, 255, .72); }
.sp__v { position: relative; display: block; min-width: 0; font-size: 11px; }
.sp__v0, .sp__v1 { display: block; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.sp__v0 { color: rgba(255, 255, 255, .34); }
.sp__v1 { position: absolute; inset: 0; color: $subject-cream; }
// 정적 상태(사람이 조작하는 길) — 요약 줄에는 이미 값이 들어와 있다
.sp__v0 { opacity: 0; }
.sp__v1 { opacity: 1; }
.sp__fix {
  margin: 0;
  padding: 0 $sp-1;
  border: 1px solid $line;
  border-radius: $r-pill;
  background: transparent;
  color: rgba(255, 255, 255, .56);
  font-family: inherit;
  font-size: 10px;
  line-height: 1.4;
  cursor: pointer;
  transition: border-color $duration $easing, color $duration $easing;
}
.sp__fix:hover { border-color: $color; color: $subject-cream; }
.sp__fix:focus-visible { outline: 2px solid $color; outline-offset: 1px; }

// 격자 미리보기 동안 플레이스홀더가 값과 겹쳐 보이지 않게
.sp.is-demo .sp__inp::placeholder { color: transparent; }

// ── 격자 미리보기 전용 2초 루프 ──────────────────
// 값 글자는 steps(1, end) 로 한 프레임에 컷 교체되고(반투명 유령 금지),
// 같은 순간 translateX 로 오른쪽에서 미끄러져 들어와 프레임 수를 채운다
// 값은 한 번 들어오면 루프 끝까지 유지되고, 처음 상태로 돌아가는 순간(컷)은
// 애니메이션 경계(100% → 0%) 자체다 — 루프 안에서 주인공(요약 값)을 지우지 않는다
@keyframes sp-cut-1 {
  0%, 13% { opacity: 0; }
  14%, 100% { opacity: 1; }
}
@keyframes sp-cut-2 {
  0%, 43% { opacity: 0; }
  44%, 100% { opacity: 1; }
}
@keyframes sp-cut-3 {
  0%, 73% { opacity: 0; }
  74%, 100% { opacity: 1; }
}
@keyframes sp-empty-1 {
  0%, 13% { opacity: 1; }
  14%, 100% { opacity: 0; }
}
@keyframes sp-empty-2 {
  0%, 43% { opacity: 1; }
  44%, 100% { opacity: 0; }
}
@keyframes sp-empty-3 {
  0%, 73% { opacity: 1; }
  74%, 100% { opacity: 0; }
}
@keyframes sp-slide-1 {
  0%, 12% { transform: translateX(0); }
  14% { transform: translateX(10px); }
  28%, 100% { transform: translateX(0); }
}
@keyframes sp-slide-2 {
  0%, 42% { transform: translateX(0); }
  44% { transform: translateX(10px); }
  58%, 100% { transform: translateX(0); }
}
@keyframes sp-slide-3 {
  0%, 72% { transform: translateX(0); }
  74% { transform: translateX(10px); }
  88%, 100% { transform: translateX(0); }
}

.sp.is-demo {
  .sp__row[data-row="1"] .sp__v1 { animation-name: sp-cut-1, sp-slide-1; }
  .sp__row[data-row="2"] .sp__v1 { animation-name: sp-cut-2, sp-slide-2; }
  .sp__row[data-row="3"] .sp__v1 { animation-name: sp-cut-3, sp-slide-3; }
  .sp__v1 {
    animation-duration: $dur-loop, $dur-loop;
    animation-timing-function: steps(1, end), $easing;
    animation-iteration-count: infinite, infinite;
  }
  .sp__row[data-row="1"] .sp__v0 { animation-name: sp-empty-1; }
  .sp__row[data-row="2"] .sp__v0 { animation-name: sp-empty-2; }
  .sp__row[data-row="3"] .sp__v0 { animation-name: sp-empty-3; }
  .sp__v0 {
    animation-duration: $dur-loop;
    animation-timing-function: steps(1, end);
    animation-iteration-count: infinite;
  }
}

// 320px 에서는 요약을 아래로 내리지 않고 폭만 줄인다 — 세로 예산(174px) 때문
@media (max-width: 340px) {
  .sp { padding: $sp-2; }
  .sp__bar { margin-bottom: $sp-1; }
  .sp__cols { gap: $sp-2; }
  .sp__form, .sp__list { gap: $sp-1; }
  .sp__f { gap: $sp-1; }
  .sp__inp { padding: 0 $sp-1; font-size: 11px; }
  .sp__side { padding-left: $sp-1; }
  .sp__fix { padding: 0; border: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .sp.is-demo .sp__v0,
  .sp.is-demo .sp__v1 { animation: none !important; transform: none !important; }
  // 움직임만 끄고 판정 결과(값이 들어와 있는 요약)는 정적 규칙 그대로 남는다
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.sp {
  box-sizing: border-box;
  width: min(320px, 92vw);
  padding: 12px;
  border: 1px solid rgb(23.5764705882%, 22.0862745098%, 22.9960784314%);
  border-radius: 16px;
  background: #17141a;
  color: #fff7e6;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 12px;
  line-height: 1.3;
}

.sp__bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 8px;
}

.sp__h {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.56);
}

.sp__cnt {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  color: #5b8cf8;
}

.sp__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.sp__form {
  display: grid;
  gap: 8px;
  align-content: start;
}

.sp__f {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  align-items: center;
}

.sp__num {
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1px solid rgb(23.5764705882%, 22.0862745098%, 22.9960784314%);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.5);
  transition: background-color 220ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 220ms cubic-bezier(0.2, 0.8, 0.2, 1), color 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.sp__inp {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 4px;
  border: 1px solid rgb(23.5764705882%, 22.0862745098%, 22.9960784314%);
  border-radius: 8px;
  background: rgb(16.2980392157%, 14.9647058824%, 16.5960784314%);
  color: #fff7e6;
  font-family: inherit;
  font-size: 12px;
  line-height: 1.3;
}

.sp__inp:focus-visible {
  outline: 2px solid #2f6df6;
  outline-offset: 1px;
}

.sp__f.is-current .sp__num {
  border-color: #0a4fe8;
  background: #0a4fe8;
  color: #fff7e6;
}

.sp__f.is-current .sp__inp {
  border-color: #2f6df6;
}

.sp__side {
  min-width: 0;
  border-left: 1px solid rgb(23.5764705882%, 22.0862745098%, 22.9960784314%);
  padding-left: 8px;
}

.sp__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  align-content: start;
}

.sp__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0 4px;
  align-items: center;
}

.sp__k {
  grid-column: 1/-1;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.72);
}

.sp__v {
  position: relative;
  display: block;
  min-width: 0;
  font-size: 11px;
}

.sp__v0, .sp__v1 {
  display: block;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.sp__v0 {
  color: rgba(255, 255, 255, 0.34);
}

.sp__v1 {
  position: absolute;
  inset: 0;
  color: #fff7e6;
}

.sp__v0 {
  opacity: 0;
}

.sp__v1 {
  opacity: 1;
}

.sp__fix {
  margin: 0;
  padding: 0 4px;
  border: 1px solid rgb(23.5764705882%, 22.0862745098%, 22.9960784314%);
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.56);
  font-family: inherit;
  font-size: 10px;
  line-height: 1.4;
  cursor: pointer;
  transition: border-color 220ms cubic-bezier(0.2, 0.8, 0.2, 1), color 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.sp__fix:hover {
  border-color: #2f6df6;
  color: #fff7e6;
}

.sp__fix:focus-visible {
  outline: 2px solid #2f6df6;
  outline-offset: 1px;
}

.sp.is-demo .sp__inp::placeholder {
  color: transparent;
}

@keyframes sp-cut-1 {
  0%, 13% {
    opacity: 0;
  }
  14%, 100% {
    opacity: 1;
  }
}
@keyframes sp-cut-2 {
  0%, 43% {
    opacity: 0;
  }
  44%, 100% {
    opacity: 1;
  }
}
@keyframes sp-cut-3 {
  0%, 73% {
    opacity: 0;
  }
  74%, 100% {
    opacity: 1;
  }
}
@keyframes sp-empty-1 {
  0%, 13% {
    opacity: 1;
  }
  14%, 100% {
    opacity: 0;
  }
}
@keyframes sp-empty-2 {
  0%, 43% {
    opacity: 1;
  }
  44%, 100% {
    opacity: 0;
  }
}
@keyframes sp-empty-3 {
  0%, 73% {
    opacity: 1;
  }
  74%, 100% {
    opacity: 0;
  }
}
@keyframes sp-slide-1 {
  0%, 12% {
    transform: translateX(0);
  }
  14% {
    transform: translateX(10px);
  }
  28%, 100% {
    transform: translateX(0);
  }
}
@keyframes sp-slide-2 {
  0%, 42% {
    transform: translateX(0);
  }
  44% {
    transform: translateX(10px);
  }
  58%, 100% {
    transform: translateX(0);
  }
}
@keyframes sp-slide-3 {
  0%, 72% {
    transform: translateX(0);
  }
  74% {
    transform: translateX(10px);
  }
  88%, 100% {
    transform: translateX(0);
  }
}
.sp.is-demo .sp__row[data-row="1"] .sp__v1 {
  animation-name: sp-cut-1, sp-slide-1;
}
.sp.is-demo .sp__row[data-row="2"] .sp__v1 {
  animation-name: sp-cut-2, sp-slide-2;
}
.sp.is-demo .sp__row[data-row="3"] .sp__v1 {
  animation-name: sp-cut-3, sp-slide-3;
}
.sp.is-demo .sp__v1 {
  animation-duration: 2s, 2s;
  animation-timing-function: steps(1, end), cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite, infinite;
}
.sp.is-demo .sp__row[data-row="1"] .sp__v0 {
  animation-name: sp-empty-1;
}
.sp.is-demo .sp__row[data-row="2"] .sp__v0 {
  animation-name: sp-empty-2;
}
.sp.is-demo .sp__row[data-row="3"] .sp__v0 {
  animation-name: sp-empty-3;
}
.sp.is-demo .sp__v0 {
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}

@media (max-width: 340px) {
  .sp {
    padding: 8px;
  }
  .sp__bar {
    margin-bottom: 4px;
  }
  .sp__cols {
    gap: 8px;
  }
  .sp__form, .sp__list {
    gap: 4px;
  }
  .sp__f {
    gap: 4px;
  }
  .sp__inp {
    padding: 0 4px;
    font-size: 11px;
  }
  .sp__side {
    padding-left: 4px;
  }
  .sp__fix {
    padding: 0;
    border: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .sp.is-demo .sp__v0,
  .sp.is-demo .sp__v1 {
    animation: none !important;
    transform: none !important;
  }
}

// 실제 동작: 왼쪽 칸에 넣는 글자가 input 이벤트로 그 순간 오른쪽 요약 줄에 반영되고,
// Edit 단추는 그 값을 담은 단계를 현재 단계로 만들어 해당 칸에 초점을 옮긴다.
var sp = document.getElementById('sp');
var STEPS = ['1 / 3 steps', '2 / 3 steps', '3 / 3 steps'];
var fs = [].slice.call(sp.querySelectorAll('.sp__f'));
var ins = [].slice.call(sp.querySelectorAll('.sp__inp'));
var rows = [].slice.call(sp.querySelectorAll('.sp__row'));
var cnt = document.getElementById('sp-step');
function setStep(i) {
  fs.forEach(function (f, n) { f.classList.toggle('is-current', n === i); });
  cnt.textContent = STEPS[i];
}
ins.forEach(function (inp, i) {
  inp.addEventListener('input', function () {
    sp.classList.remove('is-demo');
    rows[i].querySelector('.sp__v1').textContent = inp.value.trim() || '—';
  });
  inp.addEventListener('focus', function () { sp.classList.remove('is-demo'); setStep(i); });
  inp.addEventListener('keydown', function (e) {
    var d = e.key === 'ArrowDown' ? 1 : e.key === 'ArrowUp' ? -1 : 0;
    if (d && ins[i + d]) { e.preventDefault(); ins[i + d].focus({ preventScroll: true }); }
  });
});
rows.forEach(function (row, i) {
  row.querySelector('.sp__fix').addEventListener('click', function () {
    sp.classList.remove('is-demo');
    setStep(i);
    ins[i].focus({ preventScroll: true });
  });
});

import { useState, useRef } from "react";
import type { CSSProperties } from "react";
import styles from "./LiveSummaryPanel.module.scss";

export type LiveSummaryPanelProps = {
  heading?: string;
  fields?: { label: string; value: string }[];
  editLabel?: string;
  groupLabel?: string;
  /** 격자 미리보기용 2초 자동 루프. 사람이 손대면 꺼진다 */
  demo?: boolean;
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type FocusEl = { focus(opt: { preventScroll: boolean }): void };
type Box<T> = { current: T };
type KeyEvt = { key: string; preventDefault(): void };
type InpEvt = { target: { value: string } };

const DEFAULT_FIELDS = [
  { label: "Recipient", value: "Hong Gildong" },
  { label: "Email", value: "[email protected]" },
  { label: "Phone", value: "010-2345-6789" },
];

export default function LiveSummaryPanel({
  heading = "Delivery details",
  fields = DEFAULT_FIELDS,
  editLabel = "Edit",
  groupLabel = "Delivery details entry steps",
  demo = true,
  duration = 220,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#2f6df6",
}: LiveSummaryPanelProps) {
  // 정적 상태: 요약이 값으로 차 있고 현재 단계는 2 (0 기반 1)
  const [values, setValues] = useState<string[]>(fields.map((f) => f.value));
  const [at, setAt] = useState(1);
  const [live, setLive] = useState(demo);
  const boxes = useRef<(FocusEl | null)[]>([]);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  function type(i: number, v: string) {
    setLive(false);
    setValues((prev) => prev.map((s, n) => (n === i ? v : s)));
  }
  // 고치기: 그 값을 담은 단계로 돌아가 해당 칸에 초점을 준다
  function jump(i: number) {
    setLive(false);
    setAt(i);
    const arr = boxes.current;
    const el = arr ? arr[i] : null;
    if (el) el.focus({ preventScroll: true });
  }
  function arrows(i: number, e: KeyEvt) {
    const d = e.key === "ArrowDown" ? 1 : e.key === "ArrowUp" ? -1 : 0;
    if (d && fields[i + d]) {
      e.preventDefault();
      setAt(i + d);
      const arr = boxes.current;
      const el = arr ? arr[i + d] : null;
      if (el) el.focus({ preventScroll: true });
    }
  }

  const cls = [styles.sp, live ? styles.isDemo : ""].filter(Boolean).join(" ");

  return (
    <section className={cls} style={vars} aria-label={groupLabel}>
      <div className={styles.bar}>
        <p className={styles.h}>{heading}</p>
        <p className={styles.cnt}>{at + 1} / {fields.length} steps</p>
      </div>
      <div className={styles.cols}>
        <div className={styles.form}>
          {fields.map((f, i) => (
            <div
              key={f.label}
              className={[styles.f, i === at ? styles.isCurrent : ""].filter(Boolean).join(" ")}
              data-f={i + 1}
            >
              <span className={styles.num} aria-hidden="true">{i + 1}</span>
              <input
                className={styles.inp}
                ref={(el: FocusEl | null) => { const arr = boxes.current; if (arr) arr[i] = el; }}
                value={values[i]}
                aria-label={f.label}
                placeholder={f.value}
                onChange={(e: InpEvt) => type(i, e.target.value)}
                onFocus={() => { setLive(false); setAt(i); }}
                onKeyDown={(e: KeyEvt) => arrows(i, e)}
              />
            </div>
          ))}
        </div>
        <div className={styles.side} aria-live="polite">
          <ul className={styles.list}>
            {fields.map((f, i) => (
              <li key={f.label} className={styles.row} data-row={i + 1}>
                <span className={styles.k}>{f.label}</span>
                <span className={styles.v}>
                  <span className={styles.v0}>—</span>
                  <span className={styles.v1}>{values[i] || "—"}</span>
                </span>
                <button className={styles.fix} type="button" onClick={() => jump(i)}>{editLabel}</button>
              </li>
            ))}
          </ul>
        </div>
      </div>
    </section>
  );
}