08Stamp CTA band

<main class="stage">
  <section class="bcol">
    <p class="bcol__lead">All 9 parts at once</p>
    <button class="bcol__btn" type="button">
      Get the kit
      <span class="bcol__arrow" aria-hidden="true">
        <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 256 256" fill="currentColor"><path d="M216,128l-72,72V56Z" opacity="0.2"/><path d="M221.66,122.34l-72-72A8,8,0,0,0,136,56v64H40a8,8,0,0,0,0,16h96v64a8,8,0,0,0,13.66,5.66l72-72A8,8,0,0,0,221.66,122.34ZM152,180.69V75.31L204.69,128Z"/></svg>
      </span>
    </button>
  </section>
</main>

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

// 콜라주·맥시멀 팔레트 (01 과 같은 값). 코랄 면 위 흰 글자 4.59:1
$cg-cream: #fbf3e4;
$cg-sheet: #ffffff;
$cg-ink:   #241d2e;
$cg-coral: #bb7f74;
$cg-lemon: #d1c8a3;

$serif: Georgia, "Nanum Myeongjo", "Times New Roman", serif;

$duration: $dur-loop;    // 버튼이 도장처럼 눌렸다 떠오르는 한 주기
$easing: $ease-spring;
$color: $cg-coral;       // 띠 바탕색
$scallop: 8px;           // 아래쪽에서 파내는 반원의 반지름

@include stage($cg-cream);

.bcol {
  box-sizing: border-box;
  width: clamp(232px, 78vw, 304px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-3;
  padding: $sp-5 $sp-4 calc(#{$scallop} + #{$sp-5});
  border-radius: $r-xs $r-xs 0 0;
  background: $cg-coral;
  transform: rotate(-1.5deg);
  // 아래 가장자리를 반원 물결로 — 이미지가 아니라 마스크 두 겹.
  // 원 안쪽을 남기면 부채꼴이 아래로 매달리고(물결), 바깥을 남기면 톱니가 된다
  mask:
    radial-gradient(circle #{$scallop} at 50% 0, #000 98%, #0000 100%) 0 100% / #{$scallop * 2} #{$scallop} repeat-x,
    linear-gradient(#000 0 0) 0 0 / 100% calc(100% - #{$scallop}) no-repeat;
}

.bcol__lead {
  margin: 0;
  color: $cg-sheet;
  font-family: $serif;
  font-weight: 700;
  font-size: clamp(16px, 4.2vw, 21px);
  line-height: 1.2;
}

.bcol__btn {
  display: inline-flex;
  align-items: center;
  gap: $sp-2;
  border: 0;
  border-radius: $r-pill;
  background: $cg-lemon;
  color: $cg-ink;
  padding: $sp-3 $sp-5;
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(12px, 3vw, 14px);
  line-height: 1;
  box-shadow: 0 8px 0 rgba($cg-ink, .35);
  animation-name: stampPush;
  animation-duration: $duration;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}
.bcol__btn:focus-visible {
  outline: 3px solid $cg-sheet;
  outline-offset: 3px;
}
.bcol__arrow { font-size: 16px; line-height: 1; }

// 데모: 8px 두께가 눌린 만큼 사라진다 — 그림자가 두께라는 약속을 지킨다
@keyframes stampPush {
  0%, 100% { transform: translateY(-6px) rotate(-2deg); box-shadow: 0 14px 0 rgba($cg-ink, .35); }
  50%      { transform: translateY(0) rotate(1.5deg);   box-shadow: 0 2px 0 rgba($cg-ink, .35); }
}

@media (max-width: 360px), (max-height: 230px) {
  .bcol { width: 224px; padding: $sp-3 $sp-3 calc(#{$scallop} + #{$sp-3}); gap: $sp-2; }
  .bcol__lead { font-size: 14px; }
  .bcol__btn { padding: $sp-2 $sp-4; }
}

@media (prefers-reduced-motion: reduce) {
  .bcol__btn { animation: none !important; transform: rotate(-2deg); }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fbf3e4;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.bcol {
  box-sizing: border-box;
  width: clamp(232px, 78vw, 304px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 16px calc(8px + 20px);
  border-radius: 4px 4px 0 0;
  background: #bb7f74;
  transform: rotate(-1.5deg);
  mask: radial-gradient(circle 8px at 50% 0, #000 98%, rgba(0, 0, 0, 0) 100%) 0 100%/16px 8px repeat-x, linear-gradient(#000 0 0) 0 0/100% calc(100% - 8px) no-repeat;
}

.bcol__lead {
  margin: 0;
  color: #ffffff;
  font-family: Georgia, "Nanum Myeongjo", "Times New Roman", serif;
  font-weight: 700;
  font-size: clamp(16px, 4.2vw, 21px);
  line-height: 1.2;
}

.bcol__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: #d1c8a3;
  color: #241d2e;
  padding: 12px 20px;
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(12px, 3vw, 14px);
  line-height: 1;
  box-shadow: 0 8px 0 rgba(36, 29, 46, 0.35);
  animation-name: stampPush;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

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

.bcol__arrow {
  font-size: 16px;
  line-height: 1;
}

@keyframes stampPush {
  0%, 100% {
    transform: translateY(-6px) rotate(-2deg);
    box-shadow: 0 14px 0 rgba(36, 29, 46, 0.35);
  }
  50% {
    transform: translateY(0) rotate(1.5deg);
    box-shadow: 0 2px 0 rgba(36, 29, 46, 0.35);
  }
}
@media (max-width: 360px), (max-height: 230px) {
  .bcol {
    width: 224px;
    padding: 12px 12px calc(8px + 12px);
    gap: 8px;
  }
  .bcol__lead {
    font-size: 14px;
  }
  .bcol__btn {
    padding: 8px 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .bcol__btn {
    animation: none !important;
    transform: rotate(-2deg);
  }
}

import type { CSSProperties, ReactNode } from "react";
import styles from "./CtaBandCollage.module.scss";

export type CtaBandCollageProps = {
  lead?: string;
  cta?: string;
  arrowIcon?: ReactNode;
  /** 아래 가장자리 물결의 반지름(px) */
  scallop?: number;
  onClick?: () => void;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function CtaBandCollage({
  lead = "부품 9개, 한 번에",
  cta = "키트 받기",
  arrowIcon,
  scallop = 8,
  onClick,
  duration = 2000,
  easing = "cubic-bezier(.2, .8, .2, 1)",
  color = "#d93a1e",
}: CtaBandCollageProps) {
  const vars: Vars = {
    "--duration": `${duration}ms`,
    "--easing": easing,
    "--color": color,
    "--scallop": `${scallop}px`,
  };

  return (
    <section className={styles.bcol} style={vars}>
      <p className={styles.lead}>{lead}</p>
      <button type="button" className={styles.btn} onClick={onClick}>
        {cta}
        <span className={styles.arrow} aria-hidden="true">{arrowIcon}</span>
      </button>
    </section>
  );
}