04Size radio chips

<main class="stage">
  <fieldset class="sz is-demo">
    <legend class="sr-only">Size</legend>
    <label class="sz__chip"><input type="radio" name="sz1" class="sz__input" checked><span>S</span></label>
    <label class="sz__chip"><input type="radio" name="sz1" class="sz__input"><span>M</span></label>
    <label class="sz__chip"><input type="radio" name="sz1" class="sz__input"><span>L</span></label>
    <label class="sz__chip"><input type="radio" name="sz1" class="sz__input"><span>XL</span></label>
  </fieldset>
</main>

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

// ── 변수 3개 ──────────────────────────────
$duration: $dur-enter;
$easing: $ease-pop;
$color: $subject-blue;

@include stage($stage-paper);

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.sz { display: flex; gap: $sp-3; border: 0; margin: 0; padding: 0; }
.sz__input { position: absolute; opacity: 0; pointer-events: none; width: 1px; height: 1px; }
.sz__chip {
  position: relative;
  display: grid; place-items: center;
  width: $sp-12; height: $sp-12;
  border-radius: $r-control;
  background: $subject-cream;
  border: 2px solid rgba($subject-ink, .12);
  font-weight: 700;
  font-size: 15px;
  font-family: inherit;
  color: $subject-ink;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transform: scale(1);
  transition: transform $duration $easing, border-color $dur-quick $easing, color $dur-quick $easing;
}
.sz__chip:has(.sz__input:checked) {
  border-color: $color;
  border-width: 3px;
  color: $color;
  animation: sz-press-jelly $duration $easing;
}
@keyframes sz-press {
  0%   { transform: scale(1); }
  35%  { transform: scale(.84); }
  70%  { transform: scale(1.05); }
  100% { transform: scale(1); }
}
// 눌림 젤리 보강: 눌릴 때 납작(scaleX .86 / scaleY 1.08 역바운스), 튀어오를 때 세로로 늘어났다 안착
@keyframes sz-press-jelly {
  0%   { transform: scaleX(1) scaleY(1); }
  35%  { transform: scaleX(.86) scaleY(1.08); }
  65%  { transform: scaleX(1.08) scaleY(.94); }
  85%  { transform: scaleX(.97) scaleY(1.03); }
  100% { transform: scaleX(1) scaleY(1); }
}

@media (prefers-reduced-motion: reduce) {
  .sz__chip { transition: none; 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: #ffffff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sz {
  display: flex;
  gap: 12px;
  border: 0;
  margin: 0;
  padding: 0;
}

.sz__input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.sz__chip {
  position: relative;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #fff7e6;
  border: 2px solid rgba(23, 20, 26, 0.12);
  font-weight: 700;
  font-size: 15px;
  font-family: inherit;
  color: #17141a;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transform: scale(1);
  transition: transform 600ms cubic-bezier(0.2, 1.4, 0.4, 1), border-color 220ms cubic-bezier(0.2, 1.4, 0.4, 1), color 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.sz__chip:has(.sz__input:checked) {
  border-color: #2f6df6;
  border-width: 3px;
  color: #2f6df6;
  animation: sz-press-jelly 600ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

@keyframes sz-press {
  0% {
    transform: scale(1);
  }
  35% {
    transform: scale(0.84);
  }
  70% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}
@keyframes sz-press-jelly {
  0% {
    transform: scaleX(1) scaleY(1);
  }
  35% {
    transform: scaleX(0.86) scaleY(1.08);
  }
  65% {
    transform: scaleX(1.08) scaleY(0.94);
  }
  85% {
    transform: scaleX(0.97) scaleY(1.03);
  }
  100% {
    transform: scaleX(1) scaleY(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .sz__chip {
    transition: none;
    animation: none !important;
  }
}

// .is-demo 자동 순환 (실제 클릭이 오면 멈춘다, 6줄)
var sz = document.querySelector('.sz');
var inputs = sz.querySelectorAll('.sz__input'); var i = 0;
var t = setInterval(function () { inputs[i % inputs.length].checked = true; i++; }, 480);
inputs.forEach(function (el) { el.addEventListener('pointerdown', function () { sz.classList.remove('is-demo'); clearInterval(t); }); });

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

export type ChipSelectSizeRadioPressProps = {
  legend?: string;
  sizes?: string[];
  duration?: number;
  easing?: string;
  ringColor?: string;
};

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

export default function ChipSelectSizeRadioPress({
  legend = "Size",
  sizes = ["S", "M", "L", "XL"],
  duration = 300,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  ringColor = "#2f6df6",
}: ChipSelectSizeRadioPressProps) {
  const [value, setValue] = useState(sizes[0]);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--ring": ringColor };

  return (
    <fieldset className={styles.sz} style={vars}>
      <legend className={styles.srOnly}>{legend}</legend>
      {sizes.map((s) => (
        <label key={s} className={styles.chip} data-checked={value === s}>
          <input
            type="radio"
            name="size"
            className={styles.srInput}
            checked={value === s}
            onChange={() => setValue(s)}
          />
          {s}
        </label>
      ))}
    </fieldset>
  );
}