09종이 버튼·인풋

<main class="stage">
  <section class="paperui">
    <label class="paperui__field">
      <span class="paperui__ic" aria-hidden="true">
        <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 256 256"><g fill="currentColor"><path d="m224 56l-96 88l-96-88Z" opacity=".2"/><path d="M224 48H32a8 8 0 0 0-8 8v136a16 16 0 0 0 16 16h176a16 16 0 0 0 16-16V56a8 8 0 0 0-8-8m-20.57 16L128 133.15L52.57 64ZM216 192H40V74.19l82.59 75.71a8 8 0 0 0 10.82 0L216 74.19z"/></g></svg>
      </span>
      <input class="paperui__input" type="email" placeholder="[email protected]" aria-label="이메일">
    </label>
    <div class="paperui__row">
      <button class="paperui__btn paperui__btn--solid" type="button">붙이기</button>
      <button class="paperui__btn paperui__btn--ghost" type="button">미리보기</button>
    </div>
  </section>
</main>

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

// 페이퍼컷 팔레트
$paper-base:   #fbf6ec;
$paper-sheet:  #ffffff;
$paper-ink:    #2a2320;
$paper-stone:  #5c5048;
$paper-coral:  #b97b71;
$paper-sky:    #6a8db5;
$paper-leaf:   #2b7d5a;
$paper-butter: #d6c9ab;
$paper-edge:   #e7dccb;

$duration: $dur-loop;   // 두 버튼이 번갈아 눌리는 한 주기
$easing: $ease-spring;  // 종이가 바닥에 닿을 때만 탄력
$color: $paper-coral;   // 채운 버튼의 종이색

@include stage($paper-base);

.paperui {
  box-sizing: border-box;
  width: clamp(240px, 78vw, 328px);
  display: flex;
  flex-direction: column;
  gap: $sp-4;
  padding: $sp-5;
  border-radius: $r-card;
  background: $paper-sheet;
  box-shadow: 0 6px 0 $paper-edge;
}
// 인풋 — 종이에 홈을 판 것처럼 안쪽 그림자
.paperui__field {
  display: flex;
  align-items: center;
  gap: $sp-2;
  padding: $sp-3 $sp-4;
  border-radius: $r-control;
  background: $paper-base;
  box-shadow: inset 0 3px 0 $paper-edge;
}
.paperui__ic { color: $paper-stone; font-size: 16px; line-height: 1; }
.paperui__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: $paper-ink;
  font-weight: 500; font-size: 13px; line-height: 1;
  font-family: inherit;
}
.paperui__input::placeholder { color: $paper-stone; }
.paperui__input:focus-visible { outline: 2px solid $paper-sky; outline-offset: 4px; }

.paperui__row { display: flex; gap: $sp-3; }
.paperui__btn {
  flex: 1 1 0;
  border: 0;
  border-radius: $r-control;
  padding: $sp-3 $sp-4;
  font-weight: 800; font-size: 13px; line-height: 1;
  font-family: inherit;
  animation: btnPress $duration $easing infinite;
}
.paperui__btn--solid {
  background: $color;
  color: $paper-sheet;
  box-shadow: 0 6px 0 rgba($paper-ink, .28);
}
.paperui__btn--ghost {
  background: $paper-sheet;
  color: $paper-ink;
  box-shadow: 0 6px 0 $paper-edge, inset 0 0 0 2px $paper-edge;
  animation-delay: -1s;   // 반 주기 뒤 — 둘이 번갈아 눌린다
}
.paperui__btn:focus-visible { outline: 3px solid $paper-sky; outline-offset: 3px; }

// 데모: 버튼이 종이 두께(그림자 6px)만큼 내려앉았다가 되돌아온다
@keyframes btnPress {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}

@media (max-width: 340px), (max-height: 220px) {
  .paperui { width: 256px; padding: $sp-3; gap: $sp-3; }
  .paperui__field { padding: $sp-2 $sp-3; }
  .paperui__ic { font-size: 13px; }
  .paperui__input { font-size: 11px; }
  .paperui__row { gap: $sp-2; }
  .paperui__btn { padding: $sp-2 $sp-3; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .paperui__btn { 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: #fbf6ec;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.paperui {
  box-sizing: border-box;
  width: clamp(240px, 78vw, 328px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 6px 0 #e7dccb;
}

.paperui__field {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #fbf6ec;
  box-shadow: inset 0 3px 0 #e7dccb;
}

.paperui__ic {
  color: #5c5048;
  font-size: 16px;
  line-height: 1;
}

.paperui__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: #2a2320;
  font-weight: 500;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
}

.paperui__input::placeholder {
  color: #5c5048;
}

.paperui__input:focus-visible {
  outline: 2px solid #6a8db5;
  outline-offset: 4px;
}

.paperui__row {
  display: flex;
  gap: 12px;
}

.paperui__btn {
  flex: 1 1 0;
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 800;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
  animation: btnPress 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.paperui__btn--solid {
  background: #b97b71;
  color: #ffffff;
  box-shadow: 0 6px 0 rgba(42, 35, 32, 0.28);
}

.paperui__btn--ghost {
  background: #ffffff;
  color: #2a2320;
  box-shadow: 0 6px 0 #e7dccb, inset 0 0 0 2px #e7dccb;
  animation-delay: -1s;
}

.paperui__btn:focus-visible {
  outline: 3px solid #6a8db5;
  outline-offset: 3px;
}

@keyframes btnPress {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .paperui {
    width: 256px;
    padding: 12px;
    gap: 12px;
  }
  .paperui__field {
    padding: 8px 12px;
  }
  .paperui__ic {
    font-size: 13px;
  }
  .paperui__input {
    font-size: 11px;
  }
  .paperui__row {
    gap: 8px;
  }
  .paperui__btn {
    padding: 8px 12px;
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .paperui__btn {
    animation: none !important;
    transform: none;
  }
}

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

export type PaperUIProps = {
  placeholder?: string;
  solidLabel?: string;
  ghostLabel?: string;
  /** 한 주기(기본 2000ms) */
  duration?: number;
  easing?: string;
  /** 채운 버튼의 종이색 */
  color?: string;
};

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

const MAIL = (
  <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 256 256"><g fill="currentColor"><path d="m224 56l-96 88l-96-88Z" opacity=".2"/><path d="M224 48H32a8 8 0 0 0-8 8v136a16 16 0 0 0 16 16h176a16 16 0 0 0 16-16V56a8 8 0 0 0-8-8m-20.57 16L128 133.15L52.57 64ZM216 192H40V74.19l82.59 75.71a8 8 0 0 0 10.82 0L216 74.19z"/></g></svg>
);

export default function PaperUI({
  placeholder = "[email protected]",
  solidLabel = "붙이기",
  ghostLabel = "미리보기",
  duration = 2000,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#cc3d26",
}: PaperUIProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <section className={styles.paperui} style={vars}>
      <label className={styles.field}>
        <span className={styles.ic} aria-hidden="true">{MAIL}</span>
        <input className={styles.input} type="email" placeholder={placeholder} aria-label="이메일" />
      </label>
      <div className={styles.row}>
        <button className={`${styles.btn} ${styles.solid}`} type="button">{solidLabel}</button>
        <button className={`${styles.btn} ${styles.ghost}`} type="button">{ghostLabel}</button>
      </div>
    </section>
  );
}