07Brushed-aluminum CTA band

<main class="stage">
  <section class="cta-c">
    <h3 class="cta-c__title">Switch your screen today</h3>
    <button class="cta-c__btn" type="button">Start for free</button>
  </section>
</main>

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

$duration: $dur-loop;
$easing: linear;
$color: $subject-cream;

@include stage($stage-orange);
.stage { padding: clamp(8px, 4vw, 24px); }

.cta-c {
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  width: clamp(260px, 90vw, 420px);
  border-radius: $r-card;
  padding: $sp-8 $sp-6;
  background: $stage-ink;
}
// 브러시드 알루미늄 — 대각선 빛줄기 두 가닥이 천천히 흘러간다 (유일한 애니메이션)
.cta-c::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg,
    rgba($stage-ink, 0) 0 60px,
    rgba($color, .28) 60px 70px,
    rgba($stage-ink, 0) 70px 160px,
    rgba($stage-paper, .22) 160px 172px,
    rgba($stage-ink, 0) 172px 260px);
  background-size: 220% 100%;
  animation: bandSweep $duration $easing infinite;
}
.cta-c__title {
  position: relative;
  z-index: 1;
  margin: 0 0 $sp-4;
  color: $stage-paper;
  font-weight: 700;
  font-size: clamp(16px, 4vw, 20px);
  line-height: 1.3;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}
.cta-c__btn {
  position: relative;
  z-index: 1;
  border: 0;
  border-radius: $r-pill;
  background: linear-gradient(100deg, $color, $stage-paper, $color);
  color: $stage-ink;
  padding: $sp-2 $sp-6;
  font-weight: 700;
  font-size: clamp(11px, 2.6vw, 13px);
  line-height: 1;
  font-family: inherit;
}

@keyframes bandSweep { 0% { background-position: 0% 50%; } 100% { background-position: -220% 50%; } }

@media (prefers-reduced-motion: reduce) {
  .cta-c::before { animation: none; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.stage {
  padding: clamp(8px, 4vw, 24px);
}

.cta-c {
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  width: clamp(260px, 90vw, 420px);
  border-radius: 16px;
  padding: 32px 24px;
  background: #17141a;
}

.cta-c::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(23, 20, 26, 0) 0 60px, rgba(255, 247, 230, 0.28) 60px 70px, rgba(23, 20, 26, 0) 70px 160px, rgba(255, 255, 255, 0.22) 160px 172px, rgba(23, 20, 26, 0) 172px 260px);
  background-size: 220% 100%;
  animation: bandSweep 2s linear infinite;
}

.cta-c__title {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  color: #ffffff;
  font-weight: 700;
  font-size: clamp(16px, 4vw, 20px);
  line-height: 1.3;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.cta-c__btn {
  position: relative;
  z-index: 1;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(100deg, #fff7e6, #ffffff, #fff7e6);
  color: #17141a;
  padding: 8px 24px;
  font-weight: 700;
  font-size: clamp(11px, 2.6vw, 13px);
  line-height: 1;
  font-family: inherit;
}

@keyframes bandSweep {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: -220% 50%;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cta-c::before {
    animation: none;
  }
}

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

export type CtaBandChromeProps = {
  title?: string;
  cta?: string;
  /** 한 주기(기본 2000ms) */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function CtaBandChrome({
  title = "Switch your screen today",
  cta = "Start for free",
  duration = 2000,
  easing = "linear",
  color = "#fff7e6",
}: CtaBandChromeProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <section className={styles.cta} style={vars}>
      <h3 className={styles.title}>{title}</h3>
      <button type="button" className={styles.btn}>{cta}</button>
    </section>
  );
}