03Repeating pattern band

<main class="stage">
  <section class="bandm">
    <article class="bandm__panel bandm__panel--dots">
      <div class="bandm__fill bandm__fill--dots" aria-hidden="true"></div>
      <span class="bandm__name">Dots</span>
    </article>
    <article class="bandm__panel bandm__panel--wave">
      <div class="bandm__fill bandm__fill--wave" aria-hidden="true"></div>
      <span class="bandm__name">Wave</span>
    </article>
    <article class="bandm__panel bandm__panel--cross">
      <div class="bandm__fill bandm__fill--cross" aria-hidden="true"></div>
      <span class="bandm__name">Cross</span>
    </article>
  </section>
</main>

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

// 멤피스 팔레트 — 01 과 같은 값
$mem-base:  #fdf4ec;
$mem-sheet: #ffffff;
$mem-ink:   #241f26;
$mem-stone: #5d5560;
$mem-coral: #d5aea9;
$mem-lemon: #cec29c;
$mem-sky:   #82adc2;
$mem-mint:  #71b9ab;
$mem-pink:  #ebd6db;

$duration: $dur-loop;    // 무늬 바닥이 자기 폭의 절반만큼 흐르는 주기
$easing: linear;         // 흐름은 일정 속도 — 이음매가 보이지 않는다
$color: $mem-mint;       // 무대(민트)

@include stage($mem-mint);

.bandm {
  box-sizing: border-box;
  display: flex;
  gap: $sp-3;
  width: clamp(252px, 82vw, 372px);
}

// 무늬 판 — 흰 테두리판 안에 무늬 바닥이 들어 있다
.bandm__panel {
  position: relative;
  flex: 1 1 0;
  height: clamp(148px, 46vh, 208px);
  border-radius: $r-card;
  background: $mem-lemon;
  border: 3px solid $mem-ink;
  box-shadow: 0 6px 0 $mem-ink;
  overflow: hidden;
  animation: panelLift $duration $ease-out infinite;
}
.bandm__panel:nth-child(2) { animation-delay: -.22s; }
.bandm__panel:nth-child(3) { animation-delay: -.44s; }

// 무늬 바닥 — 폭을 타일의 정수배(240px = 20칸 × 12px)로 고정하고 절반을 민다
.bandm__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 240px;
  animation: fillFlow $duration $easing infinite;
}
// 점 — 반경 그라디언트 원을 타일로 찍는다
.bandm__fill--dots {
  background-image: radial-gradient(circle at 12px 12px, $mem-ink 3.5px, transparent 4.5px);
  background-size: 24px 24px;
}
// 물결 — 잉크 리본(타일 안 y8~28)의 위 가장자리에 산을, 아래 가장자리 경계에 골을 만든다
.bandm__fill--wave {
  background-image:
    linear-gradient(to bottom, transparent 8px, $mem-ink 8px 28px, transparent 28px),
    radial-gradient(circle 10px at 12px 8px, $mem-ink 0 9.5px, transparent 10px),
    radial-gradient(circle 10px at 0 28px, $mem-ink 0 9.5px, transparent 10px);
  background-size: 24px 40px;
  background-repeat: repeat;
}
// 십자 — 타일(24px) 안에 세로 막대(x 9.5~14.5)와 가로 막대(y 9.5~14.5)를 얹는다
.bandm__fill--cross {
  background-color: $mem-sky;
  background-image:
    linear-gradient(to right, transparent 9.5px, $mem-ink 9.5px 14.5px, transparent 14.5px),
    linear-gradient(to bottom, transparent 9.5px, $mem-ink 9.5px 14.5px, transparent 14.5px);
  background-size: 24px 24px;
  background-repeat: repeat;
}

// 이름표 — 무늬 위 글자는 흰 알약 하나에 잉크로만
.bandm__name {
  position: absolute;
  left: 50%;
  bottom: $sp-2;
  transform: translateX(-50%);
  padding: $sp-1 $sp-2;
  border-radius: $r-pill;
  background: $mem-sheet;
  border: 2px solid $mem-ink;
  color: $mem-ink;
  font-weight: 700; font-size: 11px; line-height: 1;
  font-family: inherit;
}

// 절반(120px = 타일 10칸)만 밀면 한 바퀴 — 무늬가 주기적이므로 이음매가 없다
@keyframes fillFlow {
  from { transform: translateX(0); }
  to   { transform: translateX(-120px); }
}
// 세 판이 0.22초씩 어긋나 들렸다 내려앉는다
@keyframes panelLift {
  0%, 100% { transform: translateY(0); }
  45%      { transform: translateY(-10px); }
}

@media (max-width: 340px), (max-height: 220px) {
  .bandm { width: 232px; gap: $sp-2; }
  .bandm__panel { height: 128px; }
  .bandm__name { bottom: $sp-1; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .bandm__fill, .bandm__panel { animation: none !important; transform: none; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #71b9ab;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.bandm {
  box-sizing: border-box;
  display: flex;
  gap: 12px;
  width: clamp(252px, 82vw, 372px);
}

.bandm__panel {
  position: relative;
  flex: 1 1 0;
  height: clamp(148px, 46vh, 208px);
  border-radius: 16px;
  background: #cec29c;
  border: 3px solid #241f26;
  box-shadow: 0 6px 0 #241f26;
  overflow: hidden;
  animation: panelLift 2s ease-out infinite;
}

.bandm__panel:nth-child(2) {
  animation-delay: -0.22s;
}

.bandm__panel:nth-child(3) {
  animation-delay: -0.44s;
}

.bandm__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 240px;
  animation: fillFlow 2s linear infinite;
}

.bandm__fill--dots {
  background-image: radial-gradient(circle at 12px 12px, #241f26 3.5px, transparent 4.5px);
  background-size: 24px 24px;
}

.bandm__fill--wave {
  background-image: linear-gradient(to bottom, transparent 8px, #241f26 8px 28px, transparent 28px), radial-gradient(circle 10px at 12px 8px, #241f26 0 9.5px, transparent 10px), radial-gradient(circle 10px at 0 28px, #241f26 0 9.5px, transparent 10px);
  background-size: 24px 40px;
  background-repeat: repeat;
}

.bandm__fill--cross {
  background-color: #82adc2;
  background-image: linear-gradient(to right, transparent 9.5px, #241f26 9.5px 14.5px, transparent 14.5px), linear-gradient(to bottom, transparent 9.5px, #241f26 9.5px 14.5px, transparent 14.5px);
  background-size: 24px 24px;
  background-repeat: repeat;
}

.bandm__name {
  position: absolute;
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
  padding: 4px 8px;
  border-radius: 999px;
  background: #ffffff;
  border: 2px solid #241f26;
  color: #241f26;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  font-family: inherit;
}

@keyframes fillFlow {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-120px);
  }
}
@keyframes panelLift {
  0%, 100% {
    transform: translateY(0);
  }
  45% {
    transform: translateY(-10px);
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .bandm {
    width: 232px;
    gap: 8px;
  }
  .bandm__panel {
    height: 128px;
  }
  .bandm__name {
    bottom: 4px;
    font-size: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .bandm__fill, .bandm__panel {
    animation: none !important;
    transform: none;
  }
}

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

export type PatternBandMemphisProps = {
  /** 판 이름 3개 (점 · 물결 · 십자 순서로 무늬가 고정) */
  names?: string[];
  /** 한 주기(기본 2000ms) */
  duration?: number;
  easing?: string;
  /** 데모 무대 색(참고용 — 판 배경은 고정) */
  color?: string;
};

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

export default function PatternBandMemphis({
  names = ["점", "물결", "십자"],
  duration = 2000,
  easing = "linear",
  color = "#2ec4a6",
}: PatternBandMemphisProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  /* 무늬는 순서대로 고정 — 점 · 물결 · 십자 */
  const fills = [
    [styles.panelDots, styles.fillDots],
    [styles.panelWave, styles.fillWave],
    [styles.panelCross, styles.fillCross],
  ];

  return (
    <section className={styles.bandm} style={vars}>
      {names.map((n, i) => {
        const [panel, fill] = fills[i % fills.length];
        return (
          <article key={n} className={`${styles.panel} ${panel}`}>
            <div className={`${styles.fill} ${fill}`} aria-hidden="true" />
            <span className={styles.name}>{n}</span>
          </article>
        );
      })}
    </section>
  );
}