02Focus-triggered format example tooltip

<main class="stage">
  <div class="ph is-demo" id="ph">
    <div class="ph__tip" id="ph-tip" role="tooltip">
      <span class="ph__seg" data-seg="0">010</span><span class="ph__dash" data-seg="0">-</span><span class="ph__seg" data-seg="1">1234</span><span class="ph__dash" data-seg="1">-</span><span class="ph__seg" data-seg="2">5678</span>
    </div>
    <label class="ph__label" for="ph-input">Mobile number</label>
    <div class="ph__field">
      <input class="ph__input" id="ph-input" type="tel" autocomplete="off" inputmode="numeric" aria-describedby="ph-tip" placeholder="Digits only">
      <span class="ph__ghost" aria-hidden="true">010-1234-5678</span>
    </div>
  </div>
</main>

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

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

@include stage($stage-yellow);

$ok: #479075;   // 노랑 무대에서 읽히는 확정 색 (민트는 노랑 위에서 흐려진다)

.ph {
  position: relative;
  box-sizing: border-box;
  width: min(300px, 86vw);
  // 툴팁은 절대배치라 뿌리 높이에 안 잡힌다 — 그만큼 위쪽을 미리 비워 둔다
  padding-top: $sp-10;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

// ── 예시 형식 툴팁 (입력칸 위로 내려온다) ────────────────
.ph__tip {
  position: absolute;
  left: 0; top: 0;
  box-sizing: border-box;
  padding: $sp-2 $sp-3;
  border-radius: $r-control;
  background: $stage-ink;
  color: rgba(255, 247, 230, .45);
  font-size: 13px; line-height: 16px; font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
  transform-origin: left bottom; // 규칙8: 참조 변(좌하) 툴팁 전개
  transform: translateY(-6px) scale(.94);
  opacity: 0;
  transition: transform $duration $easing, opacity $duration $easing;
}
.ph__tip::after {
  content: "";
  position: absolute;
  left: 18px; bottom: -5px;
  width: 10px; height: 10px;
  background: $stage-ink;
  transform: rotate(45deg);
}
.ph.is-open .ph__tip { transform: translateY(0) scale(1); opacity: 1; }

// 조각이 굳는다 — 통과한 조각만 확정 색으로
.ph__seg, .ph__dash { transition: color $duration $easing; }
.ph[data-done="1"] .ph__seg[data-seg="0"],
.ph[data-done="2"] .ph__seg[data-seg="0"],
.ph[data-done="2"] .ph__seg[data-seg="1"],
.ph[data-done="2"] .ph__dash[data-seg="0"],
.ph[data-done="3"] .ph__seg,
.ph[data-done="3"] .ph__dash { color: $subject-mint; }

// ── 입력칸 ───────────────────────────────────────────
.ph__label {
  display: block;
  margin-bottom: $sp-1;
  color: rgba(23, 20, 26, .72);
  font-size: 11px; line-height: 14px; font-weight: 700;
}
.ph__field { position: relative; }
.ph__input {
  box-sizing: border-box;
  width: 100%; height: 40px;
  padding: 0 $sp-3;
  border: 2px solid rgba(23, 20, 26, .22);
  border-radius: $r-control;
  background: $stage-paper;
  color: $subject-ink;
  font-family: inherit;
  font-size: 14px; line-height: 36px; font-weight: 700;
  letter-spacing: .04em;
}
.ph__input::placeholder { color: rgba(23, 20, 26, .38); font-weight: 600; }
.ph__input:focus-visible { outline: 2px solid $color; outline-offset: 2px; }
.ph.is-open .ph__input { border-color: $color; }
.ph[data-done="3"] .ph__input { border-color: $ok; }

// 자동 루프에서만 보이는 "쳐 넣는 숫자". 진짜 placeholder 와 겹치지 않게 지운다
.ph.is-demo .ph__input::placeholder { color: transparent; }
.ph__ghost {
  position: absolute;
  left: 14px; top: 0;
  color: $subject-ink;
  font-size: 14px; line-height: 40px; font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
}

// ── 자동 루프 (2s) ────────────────────────────────────
// 0~17% 앞자리만 친 칸(첫 조각은 이미 굳어 있다) → 20% 툴팁이 내려온다 = 가장 큰 변화 = poster
// 여닫기 구간(17~20%·76~79%)은 24프레임 샘플(4.1667% 간격) **사이**에 둔다 — 걸치면 반투명 유령이 poster 로 뽑힌다.
// → 30~62% 남은 두 조각 타이핑, 조각마다 예시가 굳는다 → 78% 툴팁 접힘 → 84% 앞자리로 되감기.
// 되감기를 툴팁이 닫힌 뒤로 미뤄야 조각 색 복귀가 프레임에 안 잡힌다 (최대 변화 프레임 = 툴팁 등장).
.ph.is-demo .ph__tip {
  transition: none;
  animation-name: ph-tip;
  animation-duration: $dur-loop;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}
.ph.is-demo .ph__ghost {
  opacity: 1;
  animation-name: ph-type;
  animation-duration: $dur-loop;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}
.ph.is-demo .ph__input {
  transition: none;
  animation-name: ph-input;
  animation-duration: $dur-loop;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}
.ph.is-demo .ph__seg,
.ph.is-demo .ph__dash {
  transition: none;
  animation-duration: $dur-loop;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}
.ph.is-demo .ph__seg[data-seg="0"]  { animation-name: ph-s0; }
.ph.is-demo .ph__dash[data-seg="0"] { animation-name: ph-s1; }
.ph.is-demo .ph__seg[data-seg="1"]  { animation-name: ph-s1; }
.ph.is-demo .ph__dash[data-seg="1"] { animation-name: ph-s2; }
.ph.is-demo .ph__seg[data-seg="2"]  { animation-name: ph-s2; }

@keyframes ph-tip {
  0%   { opacity: 0; transform: translateY(-6px) scale(.94); }
  17%  { opacity: 0; transform: translateY(-6px) scale(.94); }
  20%  { opacity: 1; transform: translateY(0) scale(1); }
  76%  { opacity: 1; transform: translateY(0) scale(1); }
  79%  { opacity: 0; transform: translateY(-6px) scale(.94); }
  100% { opacity: 0; transform: translateY(-6px) scale(.94); }
}
@keyframes ph-type {
  0%   { clip-path: inset(0 54% 0 0); }
  30%  { clip-path: inset(0 38% 0 0); }
  46%  { clip-path: inset(0 20% 0 0); }
  62%  { clip-path: inset(0 0 0 0); }
  84%  { clip-path: inset(0 54% 0 0); }
  100% { clip-path: inset(0 54% 0 0); }
}
@keyframes ph-input {
  0%   { border-color: rgba(23, 20, 26, .22); }
  20%  { border-color: $color; }
  62%  { border-color: $ok; }
  84%  { border-color: rgba(23, 20, 26, .22); }
  100% { border-color: rgba(23, 20, 26, .22); }
}
@keyframes ph-s0 {
  0%   { color: $subject-mint; }
  100% { color: $subject-mint; }
}
@keyframes ph-s1 {
  0%   { color: rgba(255, 247, 230, .45); }
  46%  { color: $subject-mint; }
  84%  { color: rgba(255, 247, 230, .45); }
  100% { color: rgba(255, 247, 230, .45); }
}
@keyframes ph-s2 {
  0%   { color: rgba(255, 247, 230, .45); }
  62%  { color: $subject-mint; }
  84%  { color: rgba(255, 247, 230, .45); }
  100% { color: rgba(255, 247, 230, .45); }
}

// 320×200 — 무대 여백을 뺀 174px 안에 들어가도록 간격을 내린다(올리지 않는다)
@media (max-width: 360px) {
  .ph { padding-top: $sp-8; }
  .ph__input { height: 36px; line-height: 32px; }
  .ph__ghost { line-height: 36px; }
}

@media (prefers-reduced-motion: reduce) {
  .ph.is-demo .ph__tip,
  .ph.is-demo .ph__ghost,
  .ph.is-demo .ph__input,
  .ph.is-demo .ph__seg,
  .ph.is-demo .ph__dash { animation: none !important; }
  .ph.is-demo .ph__tip { opacity: 1; transform: translateY(0) scale(1); }
  .ph.is-demo .ph__ghost { opacity: 1; clip-path: inset(0 0 0 0); }
  .ph.is-demo .ph__seg,
  .ph.is-demo .ph__dash { color: $subject-mint; }
  .ph.is-demo .ph__input { border-color: $ok; }
  .ph__tip, .ph__seg, .ph__dash, .ph__input { transition: none; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ph {
  position: relative;
  box-sizing: border-box;
  width: min(300px, 86vw);
  padding-top: 40px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.ph__tip {
  position: absolute;
  left: 0;
  top: 0;
  box-sizing: border-box;
  padding: 8px 12px;
  border-radius: 12px;
  background: #17141a;
  color: rgba(255, 247, 230, 0.45);
  font-size: 13px;
  line-height: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transform-origin: left bottom;
  transform: translateY(-6px) scale(0.94);
  opacity: 0;
  transition: transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1), opacity 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.ph__tip::after {
  content: "";
  position: absolute;
  left: 18px;
  bottom: -5px;
  width: 10px;
  height: 10px;
  background: #17141a;
  transform: rotate(45deg);
}

.ph.is-open .ph__tip {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.ph__seg, .ph__dash {
  transition: color 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.ph[data-done="1"] .ph__seg[data-seg="0"],
.ph[data-done="2"] .ph__seg[data-seg="0"],
.ph[data-done="2"] .ph__seg[data-seg="1"],
.ph[data-done="2"] .ph__dash[data-seg="0"],
.ph[data-done="3"] .ph__seg,
.ph[data-done="3"] .ph__dash {
  color: #4cd4a6;
}

.ph__label {
  display: block;
  margin-bottom: 4px;
  color: rgba(23, 20, 26, 0.72);
  font-size: 11px;
  line-height: 14px;
  font-weight: 700;
}

.ph__field {
  position: relative;
}

.ph__input {
  box-sizing: border-box;
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 2px solid rgba(23, 20, 26, 0.22);
  border-radius: 12px;
  background: #ffffff;
  color: #17141a;
  font-family: inherit;
  font-size: 14px;
  line-height: 36px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.ph__input::placeholder {
  color: rgba(23, 20, 26, 0.38);
  font-weight: 600;
}

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

.ph.is-open .ph__input {
  border-color: #2f6df6;
}

.ph[data-done="3"] .ph__input {
  border-color: #479075;
}

.ph.is-demo .ph__input::placeholder {
  color: transparent;
}

.ph__ghost {
  position: absolute;
  left: 14px;
  top: 0;
  color: #17141a;
  font-size: 14px;
  line-height: 40px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
}

.ph.is-demo .ph__tip {
  transition: none;
  animation-name: ph-tip;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 1.4, 0.4, 1);
  animation-iteration-count: infinite;
}

.ph.is-demo .ph__ghost {
  opacity: 1;
  animation-name: ph-type;
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}

.ph.is-demo .ph__input {
  transition: none;
  animation-name: ph-input;
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}

.ph.is-demo .ph__seg,
.ph.is-demo .ph__dash {
  transition: none;
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}

.ph.is-demo .ph__seg[data-seg="0"] {
  animation-name: ph-s0;
}

.ph.is-demo .ph__dash[data-seg="0"] {
  animation-name: ph-s1;
}

.ph.is-demo .ph__seg[data-seg="1"] {
  animation-name: ph-s1;
}

.ph.is-demo .ph__dash[data-seg="1"] {
  animation-name: ph-s2;
}

.ph.is-demo .ph__seg[data-seg="2"] {
  animation-name: ph-s2;
}

@keyframes ph-tip {
  0% {
    opacity: 0;
    transform: translateY(-6px) scale(0.94);
  }
  17% {
    opacity: 0;
    transform: translateY(-6px) scale(0.94);
  }
  20% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  76% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  79% {
    opacity: 0;
    transform: translateY(-6px) scale(0.94);
  }
  100% {
    opacity: 0;
    transform: translateY(-6px) scale(0.94);
  }
}
@keyframes ph-type {
  0% {
    clip-path: inset(0 54% 0 0);
  }
  30% {
    clip-path: inset(0 38% 0 0);
  }
  46% {
    clip-path: inset(0 20% 0 0);
  }
  62% {
    clip-path: inset(0 0 0 0);
  }
  84% {
    clip-path: inset(0 54% 0 0);
  }
  100% {
    clip-path: inset(0 54% 0 0);
  }
}
@keyframes ph-input {
  0% {
    border-color: rgba(23, 20, 26, 0.22);
  }
  20% {
    border-color: #2f6df6;
  }
  62% {
    border-color: #479075;
  }
  84% {
    border-color: rgba(23, 20, 26, 0.22);
  }
  100% {
    border-color: rgba(23, 20, 26, 0.22);
  }
}
@keyframes ph-s0 {
  0% {
    color: #4cd4a6;
  }
  100% {
    color: #4cd4a6;
  }
}
@keyframes ph-s1 {
  0% {
    color: rgba(255, 247, 230, 0.45);
  }
  46% {
    color: #4cd4a6;
  }
  84% {
    color: rgba(255, 247, 230, 0.45);
  }
  100% {
    color: rgba(255, 247, 230, 0.45);
  }
}
@keyframes ph-s2 {
  0% {
    color: rgba(255, 247, 230, 0.45);
  }
  62% {
    color: #4cd4a6;
  }
  84% {
    color: rgba(255, 247, 230, 0.45);
  }
  100% {
    color: rgba(255, 247, 230, 0.45);
  }
}
@media (max-width: 360px) {
  .ph {
    padding-top: 32px;
  }
  .ph__input {
    height: 36px;
    line-height: 32px;
  }
  .ph__ghost {
    line-height: 36px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ph.is-demo .ph__tip,
  .ph.is-demo .ph__ghost,
  .ph.is-demo .ph__input,
  .ph.is-demo .ph__seg,
  .ph.is-demo .ph__dash {
    animation: none !important;
  }
  .ph.is-demo .ph__tip {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  .ph.is-demo .ph__ghost {
    opacity: 1;
    clip-path: inset(0 0 0 0);
  }
  .ph.is-demo .ph__seg,
  .ph.is-demo .ph__dash {
    color: #4cd4a6;
  }
  .ph.is-demo .ph__input {
    border-color: #479075;
  }
  .ph__tip, .ph__seg, .ph__dash, .ph__input {
    transition: none;
  }
}

// 실제 동작: 포커스에 예시 툴팁이 열리고, 친 값이 세 조각 정규식을 통과할 때마다 그 조각이 확정 색으로 굳는다.
var ph = document.getElementById('ph');
var phInput = document.getElementById('ph-input');
var PH_RULES = [/^010/, /^010-?\d{4}/, /^010-?\d{4}-?\d{4}$/];
function phPaint() {
  ph.classList.remove('is-demo'); // 사람이 손대면 자동 루프를 멈춘다
  var v = phInput.value;
  var done = 0;
  PH_RULES.forEach(function (re, i) { if (re.test(v)) done = i + 1; });
  ph.setAttribute('data-done', String(done));
  phInput.setAttribute('aria-invalid', done === 3 ? 'false' : 'true');
}
phInput.addEventListener('focus', function () { ph.classList.remove('is-demo'); ph.classList.add('is-open'); phPaint(); });
phInput.addEventListener('blur', function () { ph.classList.remove('is-open'); });
phInput.addEventListener('input', function () {
  var d = phInput.value.replace(/\D/g, '').slice(0, 11);
  phInput.value = d.length > 7 ? d.slice(0, 3) + '-' + d.slice(3, 7) + '-' + d.slice(7)
                : d.length > 3 ? d.slice(0, 3) + '-' + d.slice(3) : d;
  phPaint();
});

import { useState } from "react";
import type { CSSProperties } from "react";
import styles from "./PatternHintTooltip.module.scss";

export type PatternHintTooltipProps = {
  label?: string;
  placeholder?: string;
  /** 자동 재생 루프 (갤러리용). 사람이 손대면 꺼진다 */
  demo?: boolean;
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type ChangeEvt = { target: { value: string } };

const RULES: RegExp[] = [/^010/, /^010-?\d{4}/, /^010-?\d{4}-?\d{4}$/];

function format(raw: string) {
  const d = raw.replace(/\D/g, "").slice(0, 11);
  if (d.length > 7) return `${d.slice(0, 3)}-${d.slice(3, 7)}-${d.slice(7)}`;
  if (d.length > 3) return `${d.slice(0, 3)}-${d.slice(3)}`;
  return d;
}

export default function PatternHintTooltip({
  label = "Mobile number",
  placeholder = "Digits only",
  demo = true,
  duration = 220,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  color = "#2f6df6",
}: PatternHintTooltipProps) {
  const [value, setValue] = useState("010-12");
  const [open, setOpen] = useState(false);
  const [live, setLive] = useState(demo);

  let done = 0;
  RULES.forEach((re, i) => { if (re.test(value)) done = i + 1; });
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  const cls = [styles.root, live ? styles.isDemo : "", open ? styles.isOpen : ""].join(" ");

  return (
    <div className={cls} style={vars} data-done={done}>
      <div className={styles.tip} id="ph-tip" role="tooltip">
        <span className={styles.seg} data-seg="0">010</span>
        <span className={styles.dash} data-seg="0">-</span>
        <span className={styles.seg} data-seg="1">1234</span>
        <span className={styles.dash} data-seg="1">-</span>
        <span className={styles.seg} data-seg="2">5678</span>
      </div>
      <label className={styles.label} htmlFor="ph-input">{label}</label>
      <div className={styles.field}>
        <input
          className={styles.input}
          id="ph-input"
          type="tel"
          inputMode="numeric"
          autoComplete="off"
          placeholder={placeholder}
          aria-describedby="ph-tip"
          aria-invalid={done !== 3}
          value={value}
          onChange={(e: ChangeEvt) => { setValue(format(e.target.value)); setLive(false); }}
          onFocus={() => { setOpen(true); setLive(false); }}
          onBlur={() => setOpen(false)}
        />
        <span className={styles.ghost} aria-hidden="true">010-1234-5678</span>
      </div>
    </div>
  );
}