02Sweeping no-results lens

<main class="stage">
  <section class="sw is-demo">
    <label class="sw__label" for="sw-q">Search docs</label>
    <input class="sw__input" id="sw-q" type="search" value="return policy" autocomplete="off">
    <div class="sw__panel">
      <ul class="sw__rows" id="sw-rows">
        <li class="sw__row" data-name="Shipping policy">Shipping policy</li>
        <li class="sw__row" data-name="Exchange guide">Exchange guide</li>
        <li class="sw__row" data-name="Payment methods">Payment methods</li>
      </ul>
      <div class="sw__empty" id="sw-empty">
        <span class="sw__lens" aria-hidden="true"><svg viewBox="0 0 256 256" width="1em" height="1em"><g fill="currentColor"><path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2"/><path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72"/></g></svg></span>
        <p class="sw__msg" id="sw-msg" data-hit="No documents found for {q}" aria-live="polite">No documents found</p>
      </div>
    </div>
  </section>
</main>

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

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

@include stage($stage-yellow);

.sw {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  gap: $sp-1;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $color;
}

.sw__label {
  font-size: 10px;
  line-height: 12px;
  font-weight: 800;
  letter-spacing: .04em;
  color: rgba(23, 20, 26, .72);   // AA 4.5 (blog-design)
}
.sw__input {
  box-sizing: border-box;
  width: 100%;
  height: 28px;
  margin: 0;
  padding: 0 $sp-3;
  border: 1px solid rgba(23, 20, 26, .22);
  border-radius: $r-control;
  background: rgba(255, 255, 255, .78);
  color: $color;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
}
.sw__input:focus-visible { outline: 2px solid $color; outline-offset: 1px; }

.sw__panel {
  position: relative;
  box-sizing: border-box;
  height: 96px;
  margin-top: $sp-1;
  padding: $sp-2;
  border-radius: $r-card;
  background: rgba(255, 255, 255, .52);
  overflow: hidden;
}
.sw__rows {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: $sp-2;
}
.sw__row[hidden] { display: none; }
.sw__row {
  height: 20px;
  padding: 0 $sp-2;
  display: flex;
  align-items: center;
  border-radius: $r-sm;
  background: rgba(255, 255, 255, .82);
  font-size: 11px;
  font-weight: 600;
}

.sw__empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: $sp-1;
}
.sw__empty[hidden] { display: none; }
.sw__lens {
  display: block;
  font-size: 36px;
  line-height: 0;
  color: rgba(23, 20, 26, .68);
}
.sw__msg {
  margin: 0;
  padding: 0 $sp-2;
  font-size: 11px;
  line-height: 14px;
  font-weight: 700;
  text-align: center;
}

// ── 자동 루프: 렌즈가 오른쪽 끝까지 훑고 같은 길로 되돌아온다. 끝 프레임이 첫 프레임과 같다 ──
.sw.is-demo .sw__lens { animation: sw-sweep $duration $easing infinite; }
@keyframes sw-sweep {
  0%, 100% { transform: translateX(-62px) rotate(-12deg); }
  50%      { transform: translateX(62px) rotate(12deg); }
}

@media (prefers-reduced-motion: reduce) {
  .sw.is-demo .sw__lens { 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);
}

.sw {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
}

.sw__label {
  font-size: 10px;
  line-height: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: rgba(23, 20, 26, 0.72);
}

.sw__input {
  box-sizing: border-box;
  width: 100%;
  height: 28px;
  margin: 0;
  padding: 0 12px;
  border: 1px solid rgba(23, 20, 26, 0.22);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.78);
  color: #17141a;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
}

.sw__input:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 1px;
}

.sw__panel {
  position: relative;
  box-sizing: border-box;
  height: 96px;
  margin-top: 4px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.52);
  overflow: hidden;
}

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

.sw__row[hidden] {
  display: none;
}

.sw__row {
  height: 20px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  font-size: 11px;
  font-weight: 600;
}

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

.sw__empty[hidden] {
  display: none;
}

.sw__lens {
  display: block;
  font-size: 36px;
  line-height: 0;
  color: rgba(23, 20, 26, 0.68);
}

.sw__msg {
  margin: 0;
  padding: 0 8px;
  font-size: 11px;
  line-height: 14px;
  font-weight: 700;
  text-align: center;
}

.sw.is-demo .sw__lens {
  animation: sw-sweep 2s ease-in-out infinite;
}

@keyframes sw-sweep {
  0%, 100% {
    transform: translateX(-62px) rotate(-12deg);
  }
  50% {
    transform: translateX(62px) rotate(12deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .sw.is-demo .sw__lens {
    animation: none !important;
  }
}

// 실제 동작: 입력한 글자로 세 줄을 거른다. 남는 줄이 없으면 빈 상태 카드가 대신 나온다.
var card = document.querySelector('.sw');
var q = document.getElementById('sw-q');
var rows = [].slice.call(document.querySelectorAll('.sw__row'));
var empty = document.getElementById('sw-empty');
var msg = document.getElementById('sw-msg');
var NONE = msg.textContent;
function render() {
  var v = q.value.trim();
  var hit = 0;
  rows.forEach(function (r) {
    var on = !v || r.dataset.name.indexOf(v) >= 0;
    r.hidden = !on;
    if (on) hit += 1;
  });
  empty.hidden = hit > 0;
  msg.textContent = v ? msg.dataset.hit.replace('{q}', v) : NONE;
}
q.addEventListener('input', function () { card.classList.remove('is-demo'); render(); });
render();

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

export type NoResultsCardProps = {
  label?: string;
  rows?: string[];
  initialQuery?: string;
  none?: string;
  noneFor?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function NoResultsCard({
  label = "Search docs",
  rows = ["Shipping policy", "Exchange guide", "Payment methods"],
  initialQuery = "return policy",
  none = "No documents found",
  noneFor = "No documents found for {q}",
  duration = 2000,
  easing = "ease-in-out",
  color = "#17141a",
}: NoResultsCardProps) {
  const [q, setQ] = useState(initialQuery);
  const [loop, setLoop] = useState(true);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  const term = q.trim();
  const hits = rows.filter((r) => !term || r.toLowerCase().indexOf(term.toLowerCase()) >= 0);

  function onInput(e: ChangeEvt) {
    setLoop(false);
    setQ(e.target.value);
  }

  return (
    <section className={`${styles.sw} ${loop ? styles.isDemo : ""}`} style={vars}>
      <label className={styles.label} htmlFor="sw-q">{label}</label>
      <input className={styles.input} id="sw-q" type="search" value={q} onChange={onInput} autoComplete="off" />
      <div className={styles.panel}>
        <ul className={styles.rows}>
          {hits.map((r) => <li className={styles.row} key={r}>{r}</li>)}
        </ul>
        {hits.length === 0 && (
          <div className={styles.empty}>
            <span className={styles.lens} aria-hidden="true">
              <svg viewBox="0 0 256 256" width="1em" height="1em">
                <g fill="currentColor">
                  <path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2" />
                  <path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72" />
                </g>
              </svg>
            </span>
            <p className={styles.msg} aria-live="polite">{term ? noneFor.replace("{q}", term) : none}</p>
          </div>
        )}
      </div>
    </section>
  );
}