02Tile viền tia sáng chạy vòng

<main class="stage">
  <div class="bb-grid is-demo">
    <div class="bb-tile bb-tile--a bb-focal">
      <span class="bb-tile__tag">Featured</span>
      <span class="bb-tile__sub">Pro plan</span>
    </div>
    <div class="bb-tile bb-tile--b">
      <span class="bb-tile__tag">+12</span>
    </div>
    <div class="bb-tile bb-tile--c">
      <span class="bb-tile__tag">Live</span>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: 1.6s;
$easing: linear;
$color: $subject-blue;

@include stage($stage-yellow);

.bb-grid {
  width: min(340px, 90vw);
  aspect-ratio: 340 / 190;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: $sp-2;
}

.bb-tile {
  border-radius: $r-sm;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: $sp-3;
  box-sizing: border-box;
  color: $subject-cream;
  background: $subject-ink;
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
  position: relative;
  overflow: hidden;
}

.bb-tile--a { grid-row: 1 / 3; }
.bb-tile--b, .bb-tile--c { background: rgba(23, 20, 26, .78); }

.bb-tile__tag { font-size: 12px; opacity: .85; }
.bb-tile__sub { font-size: 18px; font-weight: 700; margin-top: $sp-1; }

// 빛줄기 — 두께 $sp-1 만큼만 링으로 보이게 mask. 회전은 transform 만 (그라디언트 각도 자체는 애니메이트하지 않는다)
.bb-focal::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: $sp-1;
  box-sizing: border-box;
  background: conic-gradient(from 0deg, transparent 0 70%, $color 85%, transparent 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
}

// 실사용: 진짜 마우스 호버
.bb-focal:hover::before { opacity: 1; animation: bb-spin $duration $easing infinite; }

@keyframes bb-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

// 데모 루프: is-demo 는 같은 회전을 무한 재생 (캡처용)
.bb-grid.is-demo .bb-focal::before { opacity: 1; animation: bb-spin $duration $easing infinite; }

@media (prefers-reduced-motion: reduce) {
  .bb-focal:hover::before,
  .bb-grid.is-demo .bb-focal::before { animation: none !important; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.bb-grid {
  width: min(340px, 90vw);
  aspect-ratio: 340/190;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 8px;
}

.bb-tile {
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 12px;
  box-sizing: border-box;
  color: #fff7e6;
  background: #17141a;
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
  position: relative;
  overflow: hidden;
}

.bb-tile--a {
  grid-row: 1/3;
}

.bb-tile--b, .bb-tile--c {
  background: rgba(23, 20, 26, 0.78);
}

.bb-tile__tag {
  font-size: 12px;
  opacity: 0.85;
}

.bb-tile__sub {
  font-size: 18px;
  font-weight: 700;
  margin-top: 4px;
}

.bb-focal::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 4px;
  box-sizing: border-box;
  background: conic-gradient(from 0deg, transparent 0 70%, #2f6df6 85%, transparent 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
}

.bb-focal:hover::before {
  opacity: 1;
  animation: bb-spin 1.6s linear infinite;
}

@keyframes bb-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.bb-grid.is-demo .bb-focal::before {
  opacity: 1;
  animation: bb-spin 1.6s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .bb-focal:hover::before,
  .bb-grid.is-demo .bb-focal::before {
    animation: none !important;
  }
}

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

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

export interface BorderBeamTileProps {
  duration?: string;
  easing?: string;
  color?: string;
}

export default function BorderBeamTile({
  duration = "1.6s",
  easing = "linear",
  color = "#2f6df6",
}: BorderBeamTileProps) {
  const style: Vars = {
    "--duration": duration,
    "--easing": easing,
    "--color": color,
  };
  return (
    <div className={styles.grid} style={style}>
      <div className={`${styles.tile} ${styles.tileA} ${styles.focal}`}>
        <span className={styles.tag}>Featured</span>
        <span className={styles.sub}>Pro plan</span>
      </div>
      <div className={`${styles.tile} ${styles.tileB}`}>
        <span className={styles.tag}>+12</span>
      </div>
      <div className={`${styles.tile} ${styles.tileC}`}>
        <span className={styles.tag}>Live</span>
      </div>
    </div>
  );
}