02Vẽ viền bằng SVG

<main class="stage">
  <div class="card is-demo">
    <svg class="card__svg" viewBox="0 0 220 130" preserveAspectRatio="none" aria-hidden="true">
      <rect class="card__rect" x="2" y="2" width="216" height="126" rx="14" pathLength="100"></rect>
    </svg>
    <div class="card__body">
      <h3 class="card__title">Phát hành thẻ</h3>
      <p class="card__meta">Đã xác minh danh tính</p>
    </div>
  </div>
</main>

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

$duration: $dur-enter;                                  // 실제 트리거(등장) 시 테두리가 다 그려지는 시간
$easing: $ease-out;
$color: $subject-ink;                                   // 선 색

@include stage($stage-yellow);
.stage { padding: clamp(6px, 2.4vw, 16px); }

.card {
  position: relative;
  width: min(220px, 70vw);
  border-radius: $r-card;
  background: $stage-paper;
  box-shadow: $shadow-raised;
}
.card__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.card__rect {
  fill: none;
  stroke: $color;
  stroke-width: 3;
  stroke-dasharray: 100;                                // pathLength="100" 이라 둘레와 무관하게 0~100 단위로 잰다
  stroke-dashoffset: 100;
}
// 등장 시 1회는 이 값으로 (예: 카드가 로드된 직후 JS 로 .is-drawn 을 붙인다)
.card.is-drawn .card__rect { animation: draw $duration $easing forwards; }
// 데모 · 문서용 루프: 2초 안에 그려짐 → 유지 → 지워짐을 반복
.card.is-demo .card__rect { animation: draw-loop $dur-loop $easing infinite; }
.card__body { position: relative; padding: 20px 16px; }
.card__title { margin: 0 0 4px; font-weight: 700; font-size: clamp(13px, 3.6vw, 15px); line-height: 1.3; font-family: inherit; color: $stage-ink; }
.card__meta { margin: 0; font-weight: 500; font-size: clamp(11px, 3vw, 12px); line-height: 1.3; font-family: inherit; color: rgba($stage-ink, .6); }

@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes draw-loop {
  0%, 5%   { stroke-dashoffset: 100; }
  35%, 60% { stroke-dashoffset: 0; }
  100%     { stroke-dashoffset: -100; }
}

@media (prefers-reduced-motion: reduce) {
  .card.is-drawn .card__rect, .card.is-demo .card__rect { animation: none; stroke-dashoffset: 0; }
}

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);
}

.stage {
  padding: clamp(6px, 2.4vw, 16px);
}

.card {
  position: relative;
  width: min(220px, 70vw);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.card__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.card__rect {
  fill: none;
  stroke: #17141a;
  stroke-width: 3;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
}

.card.is-drawn .card__rect {
  animation: draw 600ms ease-out forwards;
}

.card.is-demo .card__rect {
  animation: draw-loop 2s ease-out infinite;
}

.card__body {
  position: relative;
  padding: 20px 16px;
}

.card__title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: clamp(13px, 3.6vw, 15px);
  line-height: 1.3;
  font-family: inherit;
  color: #17141a;
}

.card__meta {
  margin: 0;
  font-weight: 500;
  font-size: clamp(11px, 3vw, 12px);
  line-height: 1.3;
  font-family: inherit;
  color: rgba(23, 20, 26, 0.6);
}

@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}
@keyframes draw-loop {
  0%, 5% {
    stroke-dashoffset: 100;
  }
  35%, 60% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: -100;
  }
}
@media (prefers-reduced-motion: reduce) {
  .card.is-drawn .card__rect, .card.is-demo .card__rect {
    animation: none;
    stroke-dashoffset: 0;
  }
}

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

export type DrawBorderCardProps = {
  title: string;
  meta: string;
  /** 테두리가 다 그려지는 시간 (기본 2000ms, 루프용) */
  duration?: number;
  easing?: string;
  /** 선 색 */
  color?: string;
};

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

export default function DrawBorderCard({
  title,
  meta,
  duration = 2000,
  easing = "ease-out",
  color = "#17141a",
}: DrawBorderCardProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.card} style={vars}>
      <svg className={styles.svg} viewBox="0 0 220 130" preserveAspectRatio="none" aria-hidden="true">
        <rect className={styles.rect} x="2" y="2" width="216" height="126" rx="14" pathLength={100} />
      </svg>
      <div className={styles.body}>
        <h3 className={styles.title}>{title}</h3>
        <p className={styles.meta}>{meta}</p>
      </div>
    </div>
  );
}