09Wavy CTA band

<main class="stage">
  <section class="ctam">
    <div class="ctam__crest" aria-hidden="true"><span class="ctam__wave"></span></div>
    <div class="ctam__body">
      <div class="ctam__text">
        <h2 class="ctam__head">The moment you need a pattern</h2>
        <p class="ctam__sub">Paste it now and move on to the next section</p>
      </div>
      <button class="ctam__btn" type="button">
        Get started
        <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 256 256" aria-hidden="true" focusable="false"><g fill="currentColor"><path d="m216 128l-72 72V56Z" opacity=".2"/><path d="m221.66 122.34l-72-72A8 8 0 0 0 136 56v64H40a8 8 0 0 0 0 16h96v64a8 8 0 0 0 13.66 5.66l72-72a8 8 0 0 0 0-11.32M152 180.69V75.31L204.69 128Z"/></g></svg>
      </button>
    </div>
  </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;    // 물결이 한 칸(타일 폭) 흐르는 주기
$easing: $ease-out;      // 버튼의 들렀다 앉음은 부드럽게
$color: $mem-coral;      // 밴드 색 — 그 위 글자는 잉크(5.29:1)

@include stage($mem-base);

.ctam {
  box-sizing: border-box;
  width: clamp(288px, 92vw, 440px);
  padding-top: $sp-5;    // 물결 마루가 차지하는 높이(간격이 아니라 무늬 영역)
}

// 물결 마루 — 반경 그라디언트 반원이 도는 볏. 트랙은 타일 정수배 폭으로 넓혀 놓는다
.ctam__crest {
  position: relative;
  height: 20px;
  overflow: hidden;
}
.ctam__wave {
  position: absolute;
  top: 0;
  left: 0;
  width: 480px;          // 타일 24px 의 20배 — 24px 만 흐르면 처음과 같은 무늬
  height: 20px;
  background: radial-gradient(circle 12px at 12px 0, $color 0 11.5px, transparent 12px);
  background-size: 24px 24px;
  background-repeat: repeat-x;
  animation: waveDrift $duration linear infinite;
}

// 밴드 본체 — 코랄에 잉크 글자(밝은 면 위 검은 글자가 멤피스의 원칙)
.ctam__body {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: $sp-3;
  padding: $sp-4 $sp-5;
  border-radius: 0 0 $r-card $r-card;
  background: $color;
  border: 3px solid $mem-ink;
  border-top: 0;
  box-shadow: 0 6px 0 $mem-ink;
}

.ctam__head {
  margin: 0;
  color: $mem-ink;
  font-weight: 800; font-size: clamp(14px, 3.4vw, 18px); line-height: 1.25;
  font-family: inherit;
}
.ctam__sub {
  margin: $sp-1 0 0;
  color: $mem-ink;
  font-weight: 600; font-size: clamp(11px, 2.6vw, 13px); line-height: 1.3;
  font-family: inherit;
}

// 버튼 — 레몬 면에 잉크 글자. 들렀다 바닥에 앉으면서 딱 붙은 그림자가 줄어든다
.ctam__btn {
  display: inline-flex;
  align-items: center;
  gap: $sp-1;
  flex: 0 0 auto;
  padding: $sp-2 $sp-4;
  border-radius: $r-control;
  background: $mem-lemon;
  border: 3px solid $mem-ink;
  color: $mem-ink;
  font-weight: 800; font-size: clamp(12px, 2.8vw, 14px); line-height: 1;
  font-family: inherit;
  box-shadow: 0 5px 0 $mem-ink;
  animation: btnFloat $duration $easing infinite;
}
.ctam__btn svg { font-size: 1.2em; }
.ctam__btn:focus-visible { outline: 3px solid $mem-sheet; outline-offset: 2px; }

// 물결은 한 타일(24px)만 옆으로 — 무늬가 주기적이므로 이음매가 없다
@keyframes waveDrift {
  from { transform: translateX(0); }
  to   { transform: translateX(-24px); }
}
// 버튼은 8px 들었다가 앉는다 — 그림자 두께가 사라지는 쪽으로 같이 줄어든다
@keyframes btnFloat {
  0%, 100% { transform: translateY(-8px); box-shadow: 0 13px 0 $mem-ink; }
  50%      { transform: translateY(0);    box-shadow: 0 5px 0 $mem-ink; }
}

@media (max-width: 340px), (max-height: 220px) {
  .ctam { width: 248px; padding-top: $sp-4; }
  .ctam__crest { height: 16px; }
  .ctam__wave {
    width: 480px;
    height: 16px;
    background: radial-gradient(circle 10px at 10px 0, $color 0 9.5px, transparent 10px);
    background-size: 20px 20px;
    background-repeat: repeat-x;
  }
  .ctam__body { flex-direction: column; align-items: flex-start; gap: $sp-2; padding: $sp-3 $sp-4; }
  .ctam__head { font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  .ctam__wave, .ctam__btn { animation: none !important; transform: none; }
  .ctam__btn { box-shadow: 0 5px 0 $mem-ink; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fdf4ec;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ctam {
  box-sizing: border-box;
  width: clamp(288px, 92vw, 440px);
  padding-top: 20px;
}

.ctam__crest {
  position: relative;
  height: 20px;
  overflow: hidden;
}

.ctam__wave {
  position: absolute;
  top: 0;
  left: 0;
  width: 480px;
  height: 20px;
  background: radial-gradient(circle 12px at 12px 0, #d5aea9 0 11.5px, transparent 12px);
  background-size: 24px 24px;
  background-repeat: repeat-x;
  animation: waveDrift 2s linear infinite;
}

.ctam__body {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-radius: 0 0 16px 16px;
  background: #d5aea9;
  border: 3px solid #241f26;
  border-top: 0;
  box-shadow: 0 6px 0 #241f26;
}

.ctam__head {
  margin: 0;
  color: #241f26;
  font-weight: 800;
  font-size: clamp(14px, 3.4vw, 18px);
  line-height: 1.25;
  font-family: inherit;
}

.ctam__sub {
  margin: 4px 0 0;
  color: #241f26;
  font-weight: 600;
  font-size: clamp(11px, 2.6vw, 13px);
  line-height: 1.3;
  font-family: inherit;
}

.ctam__btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  padding: 8px 16px;
  border-radius: 12px;
  background: #cec29c;
  border: 3px solid #241f26;
  color: #241f26;
  font-weight: 800;
  font-size: clamp(12px, 2.8vw, 14px);
  line-height: 1;
  font-family: inherit;
  box-shadow: 0 5px 0 #241f26;
  animation: btnFloat 2s ease-out infinite;
}

.ctam__btn svg {
  font-size: 1.2em;
}

.ctam__btn:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

@keyframes waveDrift {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-24px);
  }
}
@keyframes btnFloat {
  0%, 100% {
    transform: translateY(-8px);
    box-shadow: 0 13px 0 #241f26;
  }
  50% {
    transform: translateY(0);
    box-shadow: 0 5px 0 #241f26;
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .ctam {
    width: 248px;
    padding-top: 16px;
  }
  .ctam__crest {
    height: 16px;
  }
  .ctam__wave {
    width: 480px;
    height: 16px;
    background: radial-gradient(circle 10px at 10px 0, #d5aea9 0 9.5px, transparent 10px);
    background-size: 20px 20px;
    background-repeat: repeat-x;
  }
  .ctam__body {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 16px;
  }
  .ctam__head {
    font-size: 13px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ctam__wave, .ctam__btn {
    animation: none !important;
    transform: none;
  }
  .ctam__btn {
    box-shadow: 0 5px 0 #241f26;
  }
}

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

export type CtaWaveMemphisProps = {
  head?: string;
  sub?: string;
  cta?: string;
  /** 한 주기(기본 2000ms) */
  duration?: number;
  easing?: string;
  /** 밴드 색 — 그 위 글자는 잉크 */
  color?: string;
};

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

export default function CtaWaveMemphis({
  head = "패턴이 필요한 순간이다",
  sub = "지금 붙여 넣고 다음 섹션으로",
  cta = "시작하기",
  duration = 2000,
  easing = "ease-out",
  color = "#ff5c47",
}: CtaWaveMemphisProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <section className={styles.ctam} style={vars}>
      <div className={styles.crest} aria-hidden="true"><span className={styles.wave} /></div>
      <div className={styles.body}>
        <div className={styles.text}>
          <h2 className={styles.head}>{head}</h2>
          <p className={styles.sub}>{sub}</p>
        </div>
        <button className={styles.btn} type="button">
          {cta}
          <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 256 256" aria-hidden="true" focusable="false"><g fill="currentColor"><path d="m216 128l-72 72V56Z" opacity=".2"/><path d="m221.66 122.34l-72-72A8 8 0 0 0 136 56v64H40a8 8 0 0 0 0 16h96v64a8 8 0 0 0 13.66 5.66l72-72a8 8 0 0 0 0-11.32M152 180.69V75.31L204.69 128Z"/></g></svg>
        </button>
      </div>
    </section>
  );
}