08Rounded-top footer

<main class="stage">
  <footer class="footerclay">
    <div class="footerclay__col footerclay__col--a is-demo">
      <p class="footerclay__h">Product</p>
      <p class="footerclay__link">Features</p>
    </div>
    <div class="footerclay__col footerclay__col--b is-demo">
      <p class="footerclay__h">Company</p>
      <p class="footerclay__link">About</p>
    </div>
    <div class="footerclay__col footerclay__col--c is-demo">
      <p class="footerclay__h">Support</p>
      <p class="footerclay__link">Help center</p>
    </div>
  </footer>
</main>

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

$duration: $dur-loop;       // 칸이 뜨고 가라앉는 한 주기
$easing: $ease-out;         // 곡선
$color: $subject-blue;      // 강조 색

@include stage($stage-paper);

.footerclay {
  margin: 0;
  box-sizing: border-box;
  display: flex;
  gap: $sp-3;
  width: clamp(240px, 84vw, 380px);
  border-radius: $r-card $r-card 0 0;
  background: $subject-cream;
  padding: $sp-5 $sp-4;
  box-shadow: 8px 8px 16px rgba($stage-ink, .16), -8px -8px 16px rgba($stage-paper, .9);
}
.footerclay__col {
  flex: 1;
  box-sizing: border-box;
  border-radius: $r-sm;
  background: rgba($stage-ink, .04);
  padding: $sp-3;
  animation: colFloat $duration $easing infinite;
}
.footerclay__col--a { animation-delay: 0s; }
.footerclay__col--b { animation-delay: -0.6s; }
.footerclay__col--c { animation-delay: -1.2s; }
.footerclay__h {
  margin: 0 0 $sp-1;
  color: rgba($subject-ink, .72);
  font-weight: 700; font-size: clamp(9px, 2.2vw, 10.5px); line-height: 1;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.footerclay__link {
  margin: 0;
  color: $subject-ink;
  font-weight: 600; font-size: clamp(11px, 2.6vw, 13px); line-height: 1.3;
}

// 데모: 세 칸이 서로 다른 박자로 살짝 떠올랐다 가라앉는다
@keyframes colFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-5px); }
}

@media (prefers-reduced-motion: reduce) {
  .footerclay__col { 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: #ffffff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.footerclay {
  margin: 0;
  box-sizing: border-box;
  display: flex;
  gap: 12px;
  width: clamp(240px, 84vw, 380px);
  border-radius: 16px 16px 0 0;
  background: #fff7e6;
  padding: 20px 16px;
  box-shadow: 8px 8px 16px rgba(23, 20, 26, 0.16), -8px -8px 16px rgba(255, 255, 255, 0.9);
}

.footerclay__col {
  flex: 1;
  box-sizing: border-box;
  border-radius: 8px;
  background: rgba(23, 20, 26, 0.04);
  padding: 12px;
  animation: colFloat 2s ease-out infinite;
}

.footerclay__col--a {
  animation-delay: 0s;
}

.footerclay__col--b {
  animation-delay: -0.6s;
}

.footerclay__col--c {
  animation-delay: -1.2s;
}

.footerclay__h {
  margin: 0 0 4px;
  color: rgba(23, 20, 26, 0.72);
  font-weight: 700;
  font-size: clamp(9px, 2.2vw, 10.5px);
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footerclay__link {
  margin: 0;
  color: #17141a;
  font-weight: 600;
  font-size: clamp(11px, 2.6vw, 13px);
  line-height: 1.3;
}

@keyframes colFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .footerclay__col {
    animation: none !important;
    transform: none;
  }
}

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

export type FooterClayCol = { h: string; link: string };

export type FooterClayProps = {
  cols?: FooterClayCol[];
  duration?: number;
  easing?: string;
  color?: string;
};

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

const DELAYS = ["0s", "-0.6s", "-1.2s"];

export default function FooterClay({
  cols = [
    { h: "제품", link: "기능" },
    { h: "회사", link: "소개" },
    { h: "고객지원", link: "도움말" },
  ],
  duration = 2000,
  easing = "ease-out",
  color = "#2f6df6",
}: FooterClayProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <footer className={styles.footer} style={vars}>
      {cols.map((col, i) => (
        <div key={col.h} className={styles.col} style={{ animationDelay: DELAYS[i % DELAYS.length] }}>
          <p className={styles.h}>{col.h}</p>
          <p className={styles.link}>{col.link}</p>
        </div>
      ))}
    </footer>
  );
}