08빈 상태 안내 카드

<main class="stage is-demo">
  <div class="empty">
    <svg class="edge" viewBox="0 0 240 128" preserveAspectRatio="none" aria-hidden="true">
      <rect x="1" y="1" width="238" height="126" rx="16" ry="16"
            fill="none" stroke="#e8a8c0" stroke-width="2" stroke-dasharray="10 8"/>
    </svg>
    <span class="fi" aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" fill="currentColor"><path d="M208,88v24H69.77a8,8,0,0,0-7.59,5.47L32,208V64a8,8,0,0,1,8-8H93.33a8,8,0,0,1,4.8,1.6L128,80h72A8,8,0,0,1,208,88Z" opacity="0.2"/><path d="M245,110.64A16,16,0,0,0,232,104H216V88a16,16,0,0,0-16-16H130.67L102.94,51.2a16.14,16.14,0,0,0-9.6-3.2H40A16,16,0,0,0,24,64V208a8,8,0,0,0,8,8H211.1a8,8,0,0,0,7.59-5.47l28.49-85.47A16.05,16.05,0,0,0,245,110.64ZM93.34,64,123.2,86.4A8,8,0,0,0,128,88h72v16H69.77a16,16,0,0,0-15.18,10.94L40,158.7V64Zm112,136H43.1l26.67-80H232Z"/></svg></span>
    <p class="tt">첫 프로젝트를 추가하세요</p>
    <span class="cta">프로젝트 만들기</span>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-loop;     // 2s — 점선이 한 눈금(18px) 흐르는 한 바퀴
$easing: linear;          // 점선 흐름은 등속이어야 이음매가 안 보인다
$color: $subject-pink;    // 큐트 계열 — 테두리·아이콘 전용

@include stage(#fdf0f4);

.empty {
  position: relative;
  box-sizing: border-box;
  width: 240px;
  max-width: 100%;
  height: 128px;
  display: grid; place-content: center; justify-items: center;
  gap: $sp-1;
  padding: $sp-3;
  border-radius: $r-card;
  background: #fff;
}

// 점선 테두리 — border-style: dashed 는 흐르게 할 수 없다. SVG stroke-dashoffset 으로
.edge {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border-radius: $r-card;
}
.stage.is-demo .edge rect { animation: flow $duration $easing infinite; }

.fi {
  display: block; width: 24px; height: 24px; color: $color;
  transform-origin: 50% 100%;   // 아래 끝이 축 — 매달린 진자
}
.fi svg { width: 100%; height: 100%; display: block; }

// 한 겹(폴더 진자 + CTA 호흡) — 2026-09-15 형태 2차. 점선 카드 안이 매달린 폴더와 절제된 호흡으로 살아 낸다
// 한 겹 더(진자 rotate · CTA pop — 개별 속성, 콤마 확장) — fi-pendulum 은 회전 방향이 좌우 섞여 진자 감쇠가 안 보인다.
// rotate: 로 순수 감쇠 진자(우→좌→… 8→-4.8→2.4→-.8→0)를 얹고, CTA 는 breathe 위에 절제된 pop 1.08
.stage.is-demo .fi {
  animation: fi-pendulum $duration $ease-lerp-settle infinite, swing $duration ease-in-out infinite;
}
.stage.is-demo .cta {
  animation: cta-breathe $duration $ease-lerp-settle infinite, cta-pop $duration $ease-spring infinite .2s;
}

.tt {
  margin: $sp-1 0 0;
  font-size: 12px; font-weight: 700;
  color: $subject-ink;      // 분홍 바탕에서 읽히는 건 잉크뿐이다
  text-align: center;
}

.cta {
  display: inline-flex; align-items: center; justify-content: center;
  margin: $sp-1 0 0;
  padding: $sp-2 $sp-4;
  border-radius: $r-pill;
  background: $subject-ink;
  color: #fff;
  font-size: 11px; font-weight: 700;
}

// dasharray 10+8 = 18. 한 주기에 정확히 18 을 흘려야 이음매가 안 생긴다
@keyframes flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -18; }
}

// 한 겹(감쇠 진자 ±6deg 이내 — 카드 안에서 자기 자리를 벗어나지 않는다)
@keyframes fi-pendulum {
  0%       { transform: rotate(0); }
  18%      { transform: rotate(-6deg); }
  38%      { transform: rotate(4deg); }
  58%      { transform: rotate(-2deg); }
  78%      { transform: rotate(1deg); }
  92%,100% { transform: rotate(0); }
}
@keyframes cta-breathe {
  0%       { transform: scale(1); }
  30%      { transform: scale(1.04); }
  55%      { transform: scale(.99); }
  75%,100% { transform: scale(1); }
}

// 한 겹(개별 속성 키프레임) — 기존 transform 키프레임과 병렬 합성
// 순수 감쇠 진자 — 한 방향에서 시작해 8 → -4.8 → 2.4 → -.8 → 0. fi-pendulum 과 달리 감쇠곡선이 읽힌다
@keyframes swing {
  0%        { rotate: 0deg; }
  8%        { rotate: 8deg; }
  28%       { rotate: -4.8deg; }
  48%       { rotate: 2.4deg; }
  66%       { rotate: -.8deg; }
  80%, 100% { rotate: 0deg; }
}
// 절제된 탄성 pop — CTA 답게 1.08 까지만. breathe 정점(30%=.6s) 뒤 .8s 지점에서 한 번
@keyframes cta-pop {
  0%        { scale: 1; }
  6%        { scale: 1.08; }
  16%       { scale: .96; }
  28%       { scale: 1.02; }
  38%, 100% { scale: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .edge rect { animation: none; }
  .stage.is-demo .fi { animation: none; transform: none; rotate: 0deg; }
  .stage.is-demo .cta { animation: none; transform: none; scale: 1; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fdf0f4;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.empty {
  position: relative;
  box-sizing: border-box;
  width: 240px;
  max-width: 100%;
  height: 128px;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 4px;
  padding: 12px;
  border-radius: 16px;
  background: #fff;
}

.edge {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 16px;
}

.stage.is-demo .edge rect {
  animation: flow 2s linear infinite;
}

.fi {
  display: block;
  width: 24px;
  height: 24px;
  color: #ff9ebb;
  transform-origin: 50% 100%;
}

.fi svg {
  width: 100%;
  height: 100%;
  display: block;
}

.stage.is-demo .fi {
  animation: fi-pendulum 2s linear(0, 0.051, 0.176, 0.341, 0.518, 0.685, 0.831, 0.947, 1.032, 1.087, 1.117, 1.126, 1.121, 1.105, 1.085, 1.062, 1.041, 1.022, 1.008, 0.997, 1) infinite, swing 2s ease-in-out infinite;
}

.stage.is-demo .cta {
  animation: cta-breathe 2s linear(0, 0.051, 0.176, 0.341, 0.518, 0.685, 0.831, 0.947, 1.032, 1.087, 1.117, 1.126, 1.121, 1.105, 1.085, 1.062, 1.041, 1.022, 1.008, 0.997, 1) infinite, cta-pop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite 0.2s;
}

.tt {
  margin: 4px 0 0;
  font-size: 12px;
  font-weight: 700;
  color: #17141a;
  text-align: center;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 4px 0 0;
  padding: 8px 16px;
  border-radius: 999px;
  background: #17141a;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

@keyframes flow {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -18;
  }
}
@keyframes fi-pendulum {
  0% {
    transform: rotate(0);
  }
  18% {
    transform: rotate(-6deg);
  }
  38% {
    transform: rotate(4deg);
  }
  58% {
    transform: rotate(-2deg);
  }
  78% {
    transform: rotate(1deg);
  }
  92%, 100% {
    transform: rotate(0);
  }
}
@keyframes cta-breathe {
  0% {
    transform: scale(1);
  }
  30% {
    transform: scale(1.04);
  }
  55% {
    transform: scale(0.99);
  }
  75%, 100% {
    transform: scale(1);
  }
}
@keyframes swing {
  0% {
    rotate: 0deg;
  }
  8% {
    rotate: 8deg;
  }
  28% {
    rotate: -4.8deg;
  }
  48% {
    rotate: 2.4deg;
  }
  66% {
    rotate: -0.8deg;
  }
  80%, 100% {
    rotate: 0deg;
  }
}
@keyframes cta-pop {
  0% {
    scale: 1;
  }
  6% {
    scale: 1.08;
  }
  16% {
    scale: 0.96;
  }
  28% {
    scale: 1.02;
  }
  38%, 100% {
    scale: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .edge rect {
    animation: none;
  }
  .stage.is-demo .fi {
    animation: none;
    transform: none;
    rotate: 0deg;
  }
  .stage.is-demo .cta {
    animation: none;
    transform: none;
    scale: 1;
  }
}

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

export type EmptyStateGuideCardProps = {
  duration?: number;
  easing?: string;
  color?: string;
  title?: string;
  ctaLabel?: string;
  onCta?: () => void;
};

// dasharray 10 + 8 = 18. 한 주기에 정확히 18 을 흘려야 이음매가 안 생긴다
const DASH = 18;

export default function EmptyStateGuideCard({
  duration = 2000,
  easing = "linear",
  color = "#ff9ebb",
  title = "Add your first project",
  ctaLabel = "Create project",
  onCta,
}: EmptyStateGuideCardProps) {
  const vars: CSSProperties = {
    "--duration": `${duration}ms`,
    "--easing": easing,
    "--color": color,
    "--dash": `${-DASH}`,
  } as CSSProperties;

  return (
    <div className={styles.empty} style={vars}>
      {/* border-style: dashed 는 흐르게 할 수 없다. SVG stroke-dashoffset 으로 흘린다 */}
      <svg className={styles.edge} viewBox="0 0 240 128" preserveAspectRatio="none" aria-hidden="true">
        <rect
          x="1" y="1" width="238" height="126" rx="16" ry="16"
          fill="none" stroke="#e8a8c0" strokeWidth="2" strokeDasharray="10 8"
        />
      </svg>
      <span className={styles.fi} aria-hidden="true">
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" fill="currentColor">
          <path d="M208,88v24H69.77a8,8,0,0,0-7.59,5.47L32,208V64a8,8,0,0,1,8-8H93.33a8,8,0,0,1,4.8,1.6L128,80h72A8,8,0,0,1,208,88Z" opacity="0.2" />
          <path d="M245,110.64A16,16,0,0,0,232,104H216V88a16,16,0,0,0-16-16H130.67L102.94,51.2a16.14,16.14,0,0,0-9.6-3.2H40A16,16,0,0,0,24,64V208a8,8,0,0,0,8,8H211.1a8,8,0,0,0,7.59-5.47l28.49-85.47A16.05,16.05,0,0,0,245,110.64ZM93.34,64,123.2,86.4A8,8,0,0,0,128,88h72v16H69.77a16,16,0,0,0-15.18,10.94L40,158.7V64Zm112,136H43.1l26.67-80H232Z" />
        </svg>
      </span>
      <p className={styles.tt}>{title}</p>
      <button type="button" className={styles.cta} onClick={onCta}>{ctaLabel}</button>
    </div>
  );
}