07Live criteria-ratio reflection — the strength value follows the ratio of condition values that turn true out of the total

<main class="stage">
<div class="cx is-demo" id="cx">
  <label class="cx__field">
    <input class="cx__input" id="cxInput" type="text" autocomplete="off" spellcheck="false" value="">
  </label>
  <ul class="cx__list" id="cxList">
    <li class="cx__item" data-key="len">
      <span class="cx__badge"><svg viewBox="0 0 20 20" width="12" height="12" aria-hidden="true"><path d="M4 10.5l3.5 3.5L16 5.5" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></svg></span>
      <span class="cx__label">8+ characters</span>
    </li>
    <li class="cx__item" data-key="upper">
      <span class="cx__badge"><svg viewBox="0 0 20 20" width="12" height="12" aria-hidden="true"><path d="M4 10.5l3.5 3.5L16 5.5" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></svg></span>
      <span class="cx__label">Includes uppercase</span>
    </li>
    <li class="cx__item" data-key="digit">
      <span class="cx__badge"><svg viewBox="0 0 20 20" width="12" height="12" aria-hidden="true"><path d="M4 10.5l3.5 3.5L16 5.5" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></svg></span>
      <span class="cx__label">Includes digit</span>
    </li>
    <li class="cx__item" data-key="special">
      <span class="cx__badge"><svg viewBox="0 0 20 20" width="12" height="12" aria-hidden="true"><path d="M4 10.5l3.5 3.5L16 5.5" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></svg></span>
      <span class="cx__label">Includes symbol</span>
    </li>
  </ul>
  <div class="cx__track"><div class="cx__fill" id="cxFill"></div></div>
</div>
</main>

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

// 계산 겹: 4개 기준(길이·대문자·숫자·특수문자)을 각각 판정해 참인 개수를 세고,
// 그 비율(개수/4)로 막대를 채운다 — 배지는 SVG 체크(글리프 아님)로 표시한다.
@include stage($stage-orange);

.cx {
  width: 100%;
  max-width: 320px;
  display: grid;
  gap: $sp-3;
}

.cx__field { display: block; }

.cx__input {
  width: 100%;
  box-sizing: border-box;
  padding: $sp-3 $sp-4;
  border-radius: $r-control;
  border: 0;
  background: $subject-cream;
  color: $subject-ink;
  font: 500 16px/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  letter-spacing: .04em;
  -webkit-text-security: disc;

  &:focus { outline: 2px solid $subject-ink; outline-offset: 2px; }
}

.cx__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: $sp-2;
}

.cx__item {
  display: flex;
  align-items: center;
  gap: $sp-2;
  font: 600 13px/1.2 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: rgba($subject-ink, .68);
}

.cx__badge {
  width: 20px;
  height: 20px;
  border-radius: $r-xs;
  display: grid;
  place-items: center;
  background: rgba($subject-ink, .12);
  color: transparent;
  transition: background-color $dur-quick $ease-out, color $dur-quick $ease-out;

  svg {
    transform: scale(.5);
    opacity: 0;
    transition: transform $dur-quick $ease-spring, opacity $dur-quick $ease-out;
  }
}

.cx__item--on {
  color: $subject-ink;

  .cx__badge {
    background: $subject-ink;
    color: $subject-cream;

    svg { transform: scale(1); opacity: 1; }
  }
}

.cx__track {
  position: relative;
  height: $sp-3;
  border-radius: $r-sm;
  background: rgba($subject-ink, .12);
  overflow: hidden;
}

.cx__fill {
  position: absolute;
  inset: 0;
  border-radius: $r-sm;
  background: $subject-ink;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform $dur-base $ease-out;
}

@media (max-width: 340px) {
  .cx { max-width: 260px; }
  .cx__input { padding: $sp-2 $sp-3; font-size: 14px; }
  .cx__item { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .cx__badge, .cx__fill { transition: none; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.cx {
  width: 100%;
  max-width: 320px;
  display: grid;
  gap: 12px;
}

.cx__field {
  display: block;
}

.cx__input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 16px;
  border-radius: 12px;
  border: 0;
  background: #fff7e6;
  color: #17141a;
  font: 500 16px/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  letter-spacing: 0.04em;
  -webkit-text-security: disc;
}
.cx__input:focus {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.cx__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.cx__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 600 13px/1.2 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: rgba(23, 20, 26, 0.68);
}

.cx__badge {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: grid;
  place-items: center;
  background: rgba(23, 20, 26, 0.12);
  color: transparent;
  transition: background-color 220ms ease-out, color 220ms ease-out;
}
.cx__badge svg {
  transform: scale(0.5);
  opacity: 0;
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1), opacity 220ms ease-out;
}

.cx__item--on {
  color: #17141a;
}
.cx__item--on .cx__badge {
  background: #17141a;
  color: #fff7e6;
}
.cx__item--on .cx__badge svg {
  transform: scale(1);
  opacity: 1;
}

.cx__track {
  position: relative;
  height: 12px;
  border-radius: 8px;
  background: rgba(23, 20, 26, 0.12);
  overflow: hidden;
}

.cx__fill {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background: #17141a;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 300ms ease-out;
}

@media (max-width: 340px) {
  .cx {
    max-width: 260px;
  }
  .cx__input {
    padding: 8px 12px;
    font-size: 14px;
  }
  .cx__item {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cx__badge, .cx__fill {
    transition: none;
  }
}

(function () {
  var root = document.getElementById('cx');
  var input = document.getElementById('cxInput');
  var items = root.querySelectorAll('.cx__item');
  var fill = document.getElementById('cxFill');

  // 계산 겹: 4개 기준을 각각 판정해 참인 개수를 세고, 그 비율(개수/4)로
  // 막대 채움을 맞춘다 — 배지는 개수가 아니라 각 기준의 참/거짓으로 켜진다.
  var CHECKS = {
    len: function (v) { return v.length >= 8; },
    upper: function (v) { return /[A-Z]/.test(v); },
    digit: function (v) { return /[0-9]/.test(v); },
    special: function (v) { return /[^A-Za-z0-9]/.test(v); }
  };

  function paint(value) {
    var met = 0;
    items.forEach(function (li) {
      var key = li.getAttribute('data-key');
      var ok = CHECKS[key](value);
      li.classList.toggle('cx__item--on', ok);
      if (ok) met++;
    });
    fill.style.transform = 'scaleX(' + (met / items.length) + ')';
  }

  input.addEventListener('input', function () {
    root.classList.remove('is-demo');
    stopAutoplay();
    paint(input.value);
  });

  paint(input.value);

  // 자동 루프: 시드 고정 문자열 배열로 기준을 하나씩 채웠다 되돌린다.
  var SEQ = ['', 'short', 'longenough', 'longenoughA', 'longenoughA1', 'longenoughA1!',
             'longenoughA1', 'longenoughA', 'longenough', 'short', ''];
  var si = 0;
  var autoTimer = null;
  function autoTick() { input.value = SEQ[si]; paint(SEQ[si]); si = (si + 1) % SEQ.length; }
  function stopAutoplay() { if (autoTimer) { clearInterval(autoTimer); autoTimer = null; } }
  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  if (!reduce) { autoTimer = setInterval(autoTick, 380); autoTick(); }
})();

import { useEffect, useRef } from "react";
import styles from "./CriteriaChecklistLive.module.scss";

type Box<T> = { current: T };

const CHECKS: Record<string, (v: string) => boolean> = {
  len: (v) => v.length >= 8,
  upper: (v) => /[A-Z]/.test(v),
  digit: (v) => /[0-9]/.test(v),
  special: (v) => /[^A-Za-z0-9]/.test(v),
};

const CHECK_ICON = "M4 10.5l3.5 3.5L16 5.5";

export default function CriteriaChecklistLive() {
  const rootRef = useRef(null) as unknown as Box<HTMLDivElement | null>;

  useEffect(() => {
    const root = rootRef.current;
    if (!root) return;
    const input = root.querySelector(`.${styles.input}`) as HTMLInputElement | null;
    const items = root.querySelectorAll(`.${styles.item}`);
    const fill = root.querySelector(`.${styles.fill}`) as HTMLElement | null;
    if (!input || !fill || items.length === 0) return;

    // 계산 겹: 4개 기준을 각각 판정해 참인 개수를 세고, 그 비율(개수/4)로
    // 막대 채움을 맞춘다 — 배지는 개수가 아니라 각 기준의 참/거짓으로 켜진다.
    function paint(value: string) {
      let met = 0;
      items.forEach((li) => {
        const key = (li as HTMLElement).getAttribute("data-key") || "";
        const ok = CHECKS[key] ? CHECKS[key](value) : false;
        li.classList.toggle(styles["item--on"], ok);
        if (ok) met++;
      });
      fill!.style.transform = "scaleX(" + met / items.length + ")";
    }

    function onInput() {
      root!.classList.remove(styles["is-demo"]);
      stopAutoplay();
      paint(input!.value);
    }
    input.addEventListener("input", onInput);
    paint(input.value);

    // 자동 루프: 시드 고정 문자열 배열로 기준을 하나씩 채웠다 되돌린다.
    const SEQ = ["", "short", "longenough", "longenoughA", "longenoughA1", "longenoughA1!",
      "longenoughA1", "longenoughA", "longenough", "short", ""];
    let si = 0;
    let autoTimer: number | null = null;
    function autoTick() { input!.value = SEQ[si]; paint(SEQ[si]); si = (si + 1) % SEQ.length; }
    function stopAutoplay() { if (autoTimer !== null) { window.clearInterval(autoTimer); autoTimer = null; } }
    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
    if (!reduce) { autoTimer = window.setInterval(autoTick, 380); autoTick(); }

    return () => {
      stopAutoplay();
      input.removeEventListener("input", onInput);
    };
  }, []);

  const rows: Array<[string, string]> = [
    ["len", "8자 이상"],
    ["upper", "대문자 포함"],
    ["digit", "숫자 포함"],
    ["special", "특수문자 포함"],
  ];

  return (
    <div ref={rootRef} className={`${styles.stage} ${styles.cx} ${styles["is-demo"]}`}>
      <label className={styles.field}>
        <input className={styles.input} type="text" autoComplete="off" spellCheck={false} defaultValue="" />
      </label>
      <ul className={styles.list}>
        {rows.map(([key, label]) => (
          <li key={key} className={styles.item} data-key={key}>
            <span className={styles.badge}>
              <svg viewBox="0 0 20 20" width="12" height="12" aria-hidden="true">
                <path d={CHECK_ICON} fill="none" stroke="currentColor" strokeWidth="2.4" strokeLinecap="round" strokeLinejoin="round" />
              </svg>
            </span>
            <span>{label}</span>
          </li>
        ))}
      </ul>
      <div className={styles.track}><div className={styles.fill} /></div>
    </div>
  );
}