06Filter chips clearing one by one

<main class="stage">
  <section class="fc is-demo">
    <ul class="fc__chips" id="fc-chips">
      <li><button class="fc__chip" type="button" data-chip="1">Free shipping<span class="fc__x" aria-hidden="true">×</span><span class="fc__sr">Remove filter</span></button></li>
      <li><button class="fc__chip" type="button" data-chip="2">Under 50,000 KRW<span class="fc__x" aria-hidden="true">×</span><span class="fc__sr">Remove filter</span></button></li>
      <li><button class="fc__chip" type="button" data-chip="3">Ships today<span class="fc__x" aria-hidden="true">×</span><span class="fc__sr">Remove filter</span></button></li>
    </ul>
    <div class="fc__panel">
      <ul class="fc__rows" id="fc-rows" hidden>
        <li class="fc__row">Candle holder</li>
        <li class="fc__row">Linen curtain</li>
        <li class="fc__row">Wooden tray</li>
      </ul>
      <div class="fc__empty" id="fc-empty">
        <span class="fc__icon" aria-hidden="true"><svg viewBox="0 0 256 256" width="1em" height="1em"><g fill="currentColor"><path d="M221.9 61.38L152 136v58.65a8 8 0 0 1-3.56 6.66l-32 21.33A8 8 0 0 1 104 216v-80L34.1 61.38A8 8 0 0 1 40 48h176a8 8 0 0 1 5.9 13.38" opacity=".2"/><path d="M230.6 49.53A15.81 15.81 0 0 0 216 40H40a16 16 0 0 0-11.81 26.76l.08.09L96 139.17V216a16 16 0 0 0 24.87 13.32l32-21.34a16 16 0 0 0 7.13-13.32v-55.49l67.74-72.32l.08-.09a15.8 15.8 0 0 0 2.78-17.23m-84.42 81.05A8 8 0 0 0 144 136v58.66L112 216v-80a8 8 0 0 0-2.16-5.47L40 56h176Z"/></g></svg></span>
        <p class="fc__msg" id="fc-msg" data-fmt="{n} filters · 0 items match" aria-live="polite">0 items match</p>
        <button class="fc__clear" type="button" id="fc-clear">Clear filters</button>
      </div>
    </div>
  </section>
</main>

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

$duration: $dur-loop;
$easing: $ease-pop;
$color: $subject-ink;

@include stage($stage-yellow);

.fc {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  gap: $sp-2;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $color;
}

.fc__chips {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: $sp-1;
  min-height: 22px;
}
.fc__chips li[hidden] { display: none; }
.fc__chip {
  position: relative;
  height: 22px;
  margin: 0;
  padding: 0 $sp-2;
  display: inline-flex;
  align-items: center;
  gap: $sp-1;
  border: 1px solid rgba(23, 20, 26, .2);
  border-radius: $r-pill;
  background: rgba(255, 255, 255, .82);
  color: $color;
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  transform-origin: left center; // 규칙8: 칩 left변으로 꺼짐
}
.fc__chip:focus-visible { outline: 2px solid $color; outline-offset: 2px; }
.fc__x {
  font-size: 11px;
  line-height: 1;
  color: rgba(23, 20, 26, .72);   // AA 4.5 (blog-design)
}
.fc__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.fc__panel {
  position: relative;
  box-sizing: border-box;
  height: 88px;
  padding: $sp-2;
  border-radius: $r-card;
  background: rgba(255, 255, 255, .52);
  overflow: hidden;
}
.fc__rows {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: $sp-2;
}
.fc__rows[hidden] { display: none; }
.fc__row {
  height: 20px;
  padding: 0 $sp-2;
  display: flex;
  align-items: center;
  border-radius: $r-sm;
  background: rgba(255, 255, 255, .86);
  font-size: 11px;
  font-weight: 600;
}
.fc__empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: $sp-1;
}
.fc__empty[hidden] { display: none; }
.fc__icon {
  display: block;
  font-size: 26px;
  line-height: 0;
  color: rgba(23, 20, 26, .62);
}
.fc__msg {
  margin: 0;
  font-size: 10px;
  line-height: 12px;
  font-weight: 700;
}
.fc__clear {
  height: 22px;
  margin: 0;
  padding: 0 $sp-3;
  border: 0;
  border-radius: $r-pill;
  background: $color;
  color: $subject-cream;
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
}
.fc__clear:focus-visible { outline: 2px solid $color; outline-offset: 2px; }

// ── 자동 루프: 칩이 왼쪽부터 차례로 꺼졌다 켜진다. 사라짐은 steps(1,end) 로 한 프레임에 컷 ──
.fc.is-demo .fc__chip { animation: fc-off $duration steps(1, end) infinite; }
.fc.is-demo li:nth-child(2) .fc__chip { animation-delay: 180ms; }
.fc.is-demo li:nth-child(3) .fc__chip { animation-delay: 360ms; }
@keyframes fc-off {
  0%, 32%   { opacity: 1; transform: scaleX(1); }
  33%, 74%  { opacity: 0; transform: scaleX(.2); }
  75%, 100% { opacity: 1; transform: scaleX(1); }
}
.fc.is-demo .fc__clear { animation: fc-call $duration $easing infinite; }
@keyframes fc-call {
  0%, 44%  { transform: translateY(4px) scale(.86); opacity: 0; }
  58%, 70% { transform: translateY(0) scale(1); opacity: 1; }
  84%, 100% { transform: translateY(4px) scale(.86); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .fc.is-demo .fc__chip,
  .fc.is-demo .fc__clear { animation: none !important; }
}

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);
}

.fc {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
}

.fc__chips {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 22px;
}

.fc__chips li[hidden] {
  display: none;
}

.fc__chip {
  position: relative;
  height: 22px;
  margin: 0;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid rgba(23, 20, 26, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: #17141a;
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  transform-origin: left center;
}

.fc__chip:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.fc__x {
  font-size: 11px;
  line-height: 1;
  color: rgba(23, 20, 26, 0.72);
}

.fc__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.fc__panel {
  position: relative;
  box-sizing: border-box;
  height: 88px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.52);
  overflow: hidden;
}

.fc__rows {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fc__rows[hidden] {
  display: none;
}

.fc__row {
  height: 20px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  font-size: 11px;
  font-weight: 600;
}

.fc__empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.fc__empty[hidden] {
  display: none;
}

.fc__icon {
  display: block;
  font-size: 26px;
  line-height: 0;
  color: rgba(23, 20, 26, 0.62);
}

.fc__msg {
  margin: 0;
  font-size: 10px;
  line-height: 12px;
  font-weight: 700;
}

.fc__clear {
  height: 22px;
  margin: 0;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  background: #17141a;
  color: #fff7e6;
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
}

.fc__clear:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.fc.is-demo .fc__chip {
  animation: fc-off 2s steps(1, end) infinite;
}

.fc.is-demo li:nth-child(2) .fc__chip {
  animation-delay: 180ms;
}

.fc.is-demo li:nth-child(3) .fc__chip {
  animation-delay: 360ms;
}

@keyframes fc-off {
  0%, 32% {
    opacity: 1;
    transform: scaleX(1);
  }
  33%, 74% {
    opacity: 0;
    transform: scaleX(0.2);
  }
  75%, 100% {
    opacity: 1;
    transform: scaleX(1);
  }
}
.fc.is-demo .fc__clear {
  animation: fc-call 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes fc-call {
  0%, 44% {
    transform: translateY(4px) scale(0.86);
    opacity: 0;
  }
  58%, 70% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  84%, 100% {
    transform: translateY(4px) scale(0.86);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .fc.is-demo .fc__chip,
  .fc.is-demo .fc__clear {
    animation: none !important;
  }
}

// 실제 동작: 칩의 x 로 조건을 하나씩 뗀다. 셋 다 떼면 목록이 돌아오고, 남아 있으면 0건 카드가 나온다.
var card = document.querySelector('.fc');
var chips = [].slice.call(document.querySelectorAll('.fc__chip'));
var rows = document.getElementById('fc-rows');
var empty = document.getElementById('fc-empty');
var msg = document.getElementById('fc-msg');
var clear = document.getElementById('fc-clear');
function paint() {
  var left = chips.filter(function (c) { return !c.parentElement.hidden; }).length;
  rows.hidden = left > 0;
  empty.hidden = left === 0;
  msg.textContent = msg.dataset.fmt.replace('{n}', left);
}
chips.forEach(function (c) {
  c.addEventListener('click', function () {
    card.classList.remove('is-demo');
    c.parentElement.hidden = true;
    paint();
  });
});
clear.addEventListener('click', function () {
  card.classList.remove('is-demo');
  chips.forEach(function (c) { c.parentElement.hidden = false; });
  paint();
});

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

export type FilterClearedCardProps = {
  filters?: string[];
  rows?: string[];
  removeLabel?: string;
  fmt?: string;
  clearLabel?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function FilterClearedCard({
  filters = ["Free shipping", "Under 50,000 KRW", "Ships today"],
  rows = ["Candle holder", "Linen curtain", "Wooden tray"],
  removeLabel = "Remove filter",
  fmt = "{n} filters · 0 items match",
  clearLabel = "Clear filters",
  duration = 2000,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  color = "#17141a",
}: FilterClearedCardProps) {
  const [on, setOn] = useState(filters.map(() => true));
  const [loop, setLoop] = useState(true);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  const left = on.filter(Boolean).length;

  function drop(i: number) {
    setLoop(false);
    setOn(on.map((v, k) => (k === i ? false : v)));
  }

  return (
    <section className={`${styles.fc} ${loop ? styles.isDemo : ""}`} style={vars}>
      <ul className={styles.chips}>
        {filters.map((f, i) => on[i] && (
          <li key={f}>
            <button className={styles.chip} type="button" onClick={() => drop(i)}>
              {f}
              <span className={styles.x} aria-hidden="true">×</span>
              <span className={styles.sr}>{removeLabel}</span>
            </button>
          </li>
        ))}
      </ul>
      <div className={styles.panel}>
        {left === 0 ? (
          <ul className={styles.rows}>
            {rows.map((r) => <li className={styles.row} key={r}>{r}</li>)}
          </ul>
        ) : (
          <div className={styles.empty}>
            <span className={styles.icon} aria-hidden="true">
              <svg viewBox="0 0 256 256" width="1em" height="1em">
                <g fill="currentColor">
                  <path d="M221.9 61.38L152 136v58.65a8 8 0 0 1-3.56 6.66l-32 21.33A8 8 0 0 1 104 216v-80L34.1 61.38A8 8 0 0 1 40 48h176a8 8 0 0 1 5.9 13.38" opacity=".2" />
                  <path d="M230.6 49.53A15.81 15.81 0 0 0 216 40H40a16 16 0 0 0-11.81 26.76l.08.09L96 139.17V216a16 16 0 0 0 24.87 13.32l32-21.34a16 16 0 0 0 7.13-13.32v-55.49l67.74-72.32l.08-.09a15.8 15.8 0 0 0 2.78-17.23m-84.42 81.05A8 8 0 0 0 144 136v58.66L112 216v-80a8 8 0 0 0-2.16-5.47L40 56h176Z" />
                </g>
              </svg>
            </span>
            <p className={styles.msg} aria-live="polite">{fmt.replace("{n}", String(left))}</p>
            <button
              className={styles.clear}
              type="button"
              onClick={() => { setLoop(false); setOn(filters.map(() => false)); }}
            >
              {clearLabel}
            </button>
          </div>
        )}
      </div>
    </section>
  );
}