03Horizontal steps fill

<main class="stage">
  <div class="ts03-steps is-demo">
    <div class="ts03-step"><span class="ts03-circle">1</span><span class="ts03-label">Sign up</span></div>
    <span class="ts03-bar"><span class="ts03-fill"></span></span>
    <div class="ts03-step"><span class="ts03-circle">2</span><span class="ts03-label">Profile</span></div>
    <span class="ts03-bar"><span class="ts03-fill"></span></span>
    <div class="ts03-step"><span class="ts03-circle">3</span><span class="ts03-label">Done</span></div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-out;
$color: $subject-ink;   // 주황 무대 위 전경은 잉크 — 크림은 3.11:1

@include stage($stage-orange);

.ts03-steps {
  display: flex;
  align-items: flex-start;
  width: min(320px, 88vw);
}

.ts03-step {
  flex-grow: 0;
  flex-shrink: 0;
  flex-basis: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-2;
  color: $color;
  font: 600 11px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.ts03-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, .18);
  color: $color;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
}

// 연결선: 왼쪽부터 채워진다 (transform-origin: left, scaleX)
.ts03-bar {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 0;
  height: 3px;
  margin-top: 16px;
  background: rgba(255, 255, 255, .22);
  border-radius: $r-xs;
  overflow: hidden;
  display: block;
}

.ts03-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: $color;
  transform: scaleX(0);
  transform-origin: left; // 규칙8: 연결선 왼쪽부터 채움
}

// 실제 사용 코드: 단계가 끝나면 JS 가 .is-done 을 붙이고 채워진다
.ts03-step.is-done .ts03-circle { background: $subject-cream; color: $subject-orange-deep; }   // 채워진 원 안 숫자 — 크림 면 위 deep 5.04:1
.ts03-step.is-done + .ts03-bar .ts03-fill { transform: scaleX(1); }

// 데모 루프: 1 → 2 → 3 순서로 채워지는 걸 2초에 한 번
.ts03-steps.is-demo .ts03-step:nth-child(1) .ts03-circle { animation: ts03-done $duration $easing infinite; }
.ts03-steps.is-demo .ts03-bar:nth-child(2) .ts03-fill { animation: ts03-fill $duration $easing infinite; animation-delay: .3s; }
.ts03-steps.is-demo .ts03-step:nth-child(3) .ts03-circle { animation: ts03-done $duration $easing infinite; animation-delay: .9s; }
.ts03-steps.is-demo .ts03-bar:nth-child(4) .ts03-fill { animation: ts03-fill $duration $easing infinite; animation-delay: 1.2s; }

@keyframes ts03-fill { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes ts03-done { from { background: rgba(255, 255, 255, .18); } to { background: $subject-cream; } }

@media (prefers-reduced-motion: reduce) {
  .ts03-fill, .ts03-steps.is-demo .ts03-fill { animation: none !important; transform: scaleX(1) !important; }
  .ts03-steps.is-demo .ts03-circle { 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: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ts03-steps {
  display: flex;
  align-items: flex-start;
  width: min(320px, 88vw);
}

.ts03-step {
  flex-grow: 0;
  flex-shrink: 0;
  flex-basis: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: #17141a;
  font: 600 11px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.ts03-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.18);
  color: #17141a;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
}

.ts03-bar {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 0;
  height: 3px;
  margin-top: 16px;
  background: rgba(255, 255, 255, 0.22);
  border-radius: 4px;
  overflow: hidden;
  display: block;
}

.ts03-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: #17141a;
  transform: scaleX(0);
  transform-origin: left;
}

.ts03-step.is-done .ts03-circle {
  background: #fff7e6;
  color: #c93000;
}

.ts03-step.is-done + .ts03-bar .ts03-fill {
  transform: scaleX(1);
}

.ts03-steps.is-demo .ts03-step:nth-child(1) .ts03-circle {
  animation: ts03-done 300ms ease-out infinite;
}

.ts03-steps.is-demo .ts03-bar:nth-child(2) .ts03-fill {
  animation: ts03-fill 300ms ease-out infinite;
  animation-delay: 0.3s;
}

.ts03-steps.is-demo .ts03-step:nth-child(3) .ts03-circle {
  animation: ts03-done 300ms ease-out infinite;
  animation-delay: 0.9s;
}

.ts03-steps.is-demo .ts03-bar:nth-child(4) .ts03-fill {
  animation: ts03-fill 300ms ease-out infinite;
  animation-delay: 1.2s;
}

@keyframes ts03-fill {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}
@keyframes ts03-done {
  from {
    background: rgba(255, 255, 255, 0.18);
  }
  to {
    background: #fff7e6;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ts03-fill, .ts03-steps.is-demo .ts03-fill {
    animation: none !important;
    transform: scaleX(1) !important;
  }
  .ts03-steps.is-demo .ts03-circle {
    animation: none !important;
  }
}

import { CSSProperties } from "react";
import styles from "./HorizontalStepsFill.module.scss";

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

export interface HorizontalStepsFillProps {
  duration?: string;
  easing?: string;
  color?: string;
  labels?: string[];
  doneCount?: number;
}

export default function HorizontalStepsFill({
  duration = "600ms",
  easing = "ease-out",
  color = "#17141a",
  labels = ["가입", "프로필", "완료"],
  doneCount = 2,
}: HorizontalStepsFillProps) {
  const style: Vars = { "--duration": duration, "--easing": easing, "--color": color };
  return (
    <div className={styles.steps} style={style}>
      {labels.map((label, i) => (
        <div key={label} style={{ display: "contents" }}>
          <div className={styles.step}>
            <span className={`${styles.circle} ${i < doneCount ? styles.done : ""}`}>{i + 1}</span>
            <span>{label}</span>
          </div>
          {i < labels.length - 1 && (
            <span className={styles.bar}>
              <span className={`${styles.fill} ${i < doneCount - 1 ? styles.filled : ""}`} />
            </span>
          )}
        </div>
      ))}
    </div>
  );
}