08Rounded-top footer

<main class="stage">
  <footer class="footneu is-demo">
    <div class="footneu__col footneu__col--a">
      <p class="footneu__label">Product</p>
      <p class="footneu__link">Features</p>
    </div>
    <div class="footneu__col footneu__col--b">
      <p class="footneu__label">Company</p>
      <p class="footneu__link">About</p>
    </div>
    <div class="footneu__col footneu__col--c">
      <p class="footneu__label">Support</p>
      <p class="footneu__link">Help</p>
    </div>
  </footer>
</main>

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

$duration: $dur-loop;       // 칸마다 눌렸다 돌아오는 파도 한 주기
$easing: $ease-spring;      // 파도 곡선
$color: $subject-blue;      // 강조 색

@include stage($stage-paper);

$neu-surface: mix($stage-paper, black, 94%);
$neu-light: rgba(mix($neu-surface, white, 40%), .85);
$neu-dark: rgba(mix($neu-surface, black, 40%), .4);

.footneu {
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: $sp-3;
  width: clamp(240px, 84vw, 380px);
  padding: $sp-4;
  border-radius: $r-card $r-card $r-sm $r-sm;
  background: $neu-surface;
  box-shadow: 8px 8px 16px $neu-dark, -8px -8px 16px $neu-light;
}
.footneu__col {
  box-sizing: border-box;
  padding: $sp-2;
  border-radius: $r-control;
  background: $neu-surface;
  box-shadow: inset 2px 2px 5px $neu-dark, inset -2px -2px 5px $neu-light;
  animation: settle $duration $easing infinite;
}
.footneu__col--a { animation-delay: 0s; }
.footneu__col--b { animation-delay: -0.5s; }
.footneu__col--c { animation-delay: -1s; }
.footneu__label {
  margin: 0;
  color: rgba($subject-ink, .72);
  font-weight: 700; font-size: clamp(9px, 2.2vw, 10px); line-height: 1;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.footneu__link {
  margin: $sp-1 0 0;
  color: $subject-ink;
  font-weight: 600; font-size: clamp(11px, 2.6vw, 12.5px); line-height: 1.3;
}

// 데모: 칸마다 눌린 깊이가 다른 박자로 얕아졌다 깊어지며, 살짝 오그라들었다 편다
@keyframes settle {
  0%, 100% { transform: scale(1); box-shadow: inset 2px 2px 5px $neu-dark, inset -2px -2px 5px $neu-light; }
  50%      { transform: scale(.93); box-shadow: inset 6px 6px 11px $neu-dark, inset -6px -6px 11px $neu-light; }
}

@media (prefers-reduced-motion: reduce) {
  .footneu__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);
}

.footneu {
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: clamp(240px, 84vw, 380px);
  padding: 16px;
  border-radius: 16px 16px 8px 8px;
  background: rgb(94%, 94%, 94%);
  box-shadow: 8px 8px 16px rgba(37.6%, 37.6%, 37.6%, 0.4), -8px -8px 16px rgba(97.6%, 97.6%, 97.6%, 0.85);
}

.footneu__col {
  box-sizing: border-box;
  padding: 8px;
  border-radius: 12px;
  background: rgb(94%, 94%, 94%);
  box-shadow: inset 2px 2px 5px rgba(37.6%, 37.6%, 37.6%, 0.4), inset -2px -2px 5px rgba(97.6%, 97.6%, 97.6%, 0.85);
  animation: settle 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

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

.footneu__col--b {
  animation-delay: -0.5s;
}

.footneu__col--c {
  animation-delay: -1s;
}

.footneu__label {
  margin: 0;
  color: rgba(23, 20, 26, 0.72);
  font-weight: 700;
  font-size: clamp(9px, 2.2vw, 10px);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footneu__link {
  margin: 4px 0 0;
  color: #17141a;
  font-weight: 600;
  font-size: clamp(11px, 2.6vw, 12.5px);
  line-height: 1.3;
}

@keyframes settle {
  0%, 100% {
    transform: scale(1);
    box-shadow: inset 2px 2px 5px rgba(37.6%, 37.6%, 37.6%, 0.4), inset -2px -2px 5px rgba(97.6%, 97.6%, 97.6%, 0.85);
  }
  50% {
    transform: scale(0.93);
    box-shadow: inset 6px 6px 11px rgba(37.6%, 37.6%, 37.6%, 0.4), inset -6px -6px 11px rgba(97.6%, 97.6%, 97.6%, 0.85);
  }
}
@media (prefers-reduced-motion: reduce) {
  .footneu__col {
    animation: none !important;
    transform: none;
  }
}

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

export type FooterNeuCol = { label: string; link: string };
export type FooterNeuProps = {
  cols?: FooterNeuCol[];
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function FooterNeu({
  cols = [
    { label: "제품", link: "기능" },
    { label: "회사", link: "소개" },
    { label: "고객지원", link: "도움말" },
  ],
  duration = 2000,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#2f6df6",
}: FooterNeuProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <footer className={styles.footer} style={vars}>
      {cols.map((c, i) => (
        <div key={c.label} className={styles.col} style={{ animationDelay: `${-i * 0.5}s` }}>
          <p className={styles.label}>{c.label}</p>
          <p className={styles.link}>{c.link}</p>
        </div>
      ))}
    </footer>
  );
}