07Contact form

<main class="stage">
  <form class="cf" novalidate>
    <h2 class="cf__title">Contact</h2>
    <label class="cf__field">
      <span class="cf__label-text">Name</span>
      <input class="cf__input" name="name" type="text" placeholder="Jane Doe">
    </label>
    <label class="cf__field">
      <span class="cf__label-text">Email</span>
      <input class="cf__input" name="email" type="email" placeholder="[email protected]">
    </label>
    <button class="cf__submit" type="submit">
      <span class="cf__submit-label">Send message</span>
      <svg class="cf__check" viewBox="0 0 20 20" aria-hidden="true"><polyline points="4,10 8,14 16,5"/></svg>
    </button>
    <p class="cf__status" role="status" aria-live="polite"></p>
  </form>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;                             // 제출 버튼 전환
$easing: $ease-pop;
$color: $subject-blue;                            // 제출 버튼·체크 색

@include stage($stage-orange);

.cf {
  width: min(320px, 92vw);
  border-radius: $r-card;
  padding: $sp-4;
  box-sizing: border-box;
  background: rgba(255, 255, 255, .95);
}
.cf__title { margin: 0 0 $sp-3; font-weight: 800; font-size: clamp(13px, 3.8vw, 15px); line-height: 1.2; font-family: inherit; color: $subject-ink; }

.cf__field { display: block; margin: 0 0 $sp-2; }
.cf__label-text { display: block; margin: 0 0 4px; font-weight: 700; font-size: 9px; line-height: 1.3; font-family: inherit; color: rgba($subject-ink, .72); }                // 크림 면 위 7.08:1
.cf__input {
  width: 100%;
  box-sizing: border-box;
  padding: $sp-1 $sp-2;
  border-radius: $r-sm;
  border: 1px solid rgba(23, 20, 26, .18);
  font-weight: 500; font-size: 11px; line-height: 1.6; font-family: inherit;
  color: $subject-ink;
}
.cf__input.is-shake { animation: cf-shake $dur-quick $easing; }
@keyframes cf-shake {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-6px); }
  75%      { transform: translateX(6px); }
}

.cf__submit {
  position: relative;
  display: inline-flex; align-items: center; gap: $sp-1;
  margin-top: $sp-1;
  padding: $sp-1 $sp-4;
  border: 0;
  border-radius: $r-pill;
  background: $subject-blue-deep;
  color: $subject-cream;
  font-weight: 700; font-size: 11px; line-height: 1.6; font-family: inherit;
  cursor: pointer;
  transition: background $duration $easing;
  animation: cf-glow 2s $easing infinite;
}
// ── 제출 버튼 글로우가 계속 반복되는 장식(항상 재생) ──────────────
@keyframes cf-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(47, 109, 246, .45); }
  50%      { box-shadow: 0 0 0 6px rgba(47, 109, 246, 0); }
}
.cf.is-done .cf__submit { animation: none; }
.cf__check {
  width: 12px; height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 18;
  stroke-dashoffset: 18;
  transition: stroke-dashoffset $duration $easing;
}
.cf.is-done .cf__submit { background: #51a474; }
.cf.is-done .cf__check { stroke-dashoffset: 0; }

.cf__status { min-height: 14px; margin: $sp-1 0 0; font-weight: 600; font-size: 9px; line-height: 1.4; font-family: inherit; color: rgba($subject-ink, .72); } // 스캔 땐 빈 칸이라 안 잡혔지만 제출 뒤 드러나는 같은 실패(3.97)라 같이 올렸다

// ── 반응형(BD9) ──────────────────────────────────────────
@media (max-width: 340px), (max-height: 220px) {
  .cf { padding: $sp-3; }
  .cf__title { margin-bottom: $sp-2; }
  .cf__field { margin-bottom: $sp-1; }
  .cf__label-text { margin-bottom: 0; }
  .cf__input { padding: $sp-1 $sp-2; line-height: 1.3; }
  .cf__submit { padding: $sp-1 $sp-3; line-height: 1.3; margin-top: 0; }
  .cf__status { min-height: 12px; margin-top: 0; }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .cf__input.is-shake { animation: none !important; }
  .cf__submit { animation: none !important; transition: none; }
  .cf__check { transition: 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);
}

.cf {
  width: min(320px, 92vw);
  border-radius: 16px;
  padding: 16px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.95);
}

.cf__title {
  margin: 0 0 12px;
  font-weight: 800;
  font-size: clamp(13px, 3.8vw, 15px);
  line-height: 1.2;
  font-family: inherit;
  color: #17141a;
}

.cf__field {
  display: block;
  margin: 0 0 8px;
}

.cf__label-text {
  display: block;
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 9px;
  line-height: 1.3;
  font-family: inherit;
  color: rgba(23, 20, 26, 0.72);
}

.cf__input {
  width: 100%;
  box-sizing: border-box;
  padding: 4px 8px;
  border-radius: 8px;
  border: 1px solid rgba(23, 20, 26, 0.18);
  font-weight: 500;
  font-size: 11px;
  line-height: 1.6;
  font-family: inherit;
  color: #17141a;
}

.cf__input.is-shake {
  animation: cf-shake 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

@keyframes cf-shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  75% {
    transform: translateX(6px);
  }
}
.cf__submit {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  padding: 4px 16px;
  border: 0;
  border-radius: 999px;
  background: #0a4fe8;
  color: #fff7e6;
  font-weight: 700;
  font-size: 11px;
  line-height: 1.6;
  font-family: inherit;
  cursor: pointer;
  transition: background 300ms cubic-bezier(0.2, 1.4, 0.4, 1);
  animation: cf-glow 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes cf-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(47, 109, 246, 0.45);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(47, 109, 246, 0);
  }
}
.cf.is-done .cf__submit {
  animation: none;
}

.cf__check {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 18;
  stroke-dashoffset: 18;
  transition: stroke-dashoffset 300ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.cf.is-done .cf__submit {
  background: #51a474;
}

.cf.is-done .cf__check {
  stroke-dashoffset: 0;
}

.cf__status {
  min-height: 14px;
  margin: 4px 0 0;
  font-weight: 600;
  font-size: 9px;
  line-height: 1.4;
  font-family: inherit;
  color: rgba(23, 20, 26, 0.72);
}

@media (max-width: 340px), (max-height: 220px) {
  .cf {
    padding: 12px;
  }
  .cf__title {
    margin-bottom: 8px;
  }
  .cf__field {
    margin-bottom: 4px;
  }
  .cf__label-text {
    margin-bottom: 0;
  }
  .cf__input {
    padding: 4px 8px;
    line-height: 1.3;
  }
  .cf__submit {
    padding: 4px 12px;
    line-height: 1.3;
    margin-top: 0;
  }
  .cf__status {
    min-height: 12px;
    margin-top: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cf__input.is-shake {
    animation: none !important;
  }
  .cf__submit {
    animation: none !important;
    transition: none;
  }
  .cf__check {
    transition: none;
  }
}

// 실제 동작: 제출 시 Name·이메일을 실제로 검사한다. 빠지면 그 칸이 흔들리며 포커스를 받고, 통과하면 체크가 그려진다.
var form = document.querySelector('.cf');
var name = form.querySelector('[name="name"]');
var email = form.querySelector('[name="email"]');
var status = form.querySelector('.cf__status');

function shakeField(el) {
  el.classList.remove('is-shake');
  void el.offsetWidth;
  el.classList.add('is-shake');
}

form.addEventListener('submit', function (e) {
  e.preventDefault();
  var hasName = name.value.trim().length > 0;
  var isEmailValid = /^\S+@\S+\.\S+$/.test(email.value);
  if (!hasName) {
    shakeField(name);
    name.focus({ preventScroll: true });
    status.textContent = 'Please enter your name.';
    return;
  }
  if (!isEmailValid) {
    shakeField(email);
    email.focus({ preventScroll: true });
    status.textContent = 'Please enter a valid email address.';
    return;
  }
  form.classList.add('is-done');
  status.textContent = 'Your message has been sent.';
});

import { useRef, useState } from "react";
import type { CSSProperties } from "react";
import styles from "./ProjectContactForm.module.scss";

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

export default function ProjectContactForm({ duration = 300, easing = "cubic-bezier(.2,1.4,.4,1)", color = "#0a4fe8" }: ProjectContactFormProps) {
  const [name, setName] = useState("");
  const [email, setEmail] = useState("");
  const [done, setDone] = useState(false);
  const [status, setStatus] = useState("");
  const [shakeField, setShakeField] = useState<"name" | "email" | null>(null);
  const nameRef = useRef<HTMLInputElement>(null);
  const emailRef = useRef<HTMLInputElement>(null);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  // 실제 동작: 제출 시 이름·이메일을 실제로 검사한다. 빠지면 그 칸이 흔들리며 포커스를 받는다({ preventScroll: true } — 홈 목록 iframe 안에서 강제 스크롤을 막는다).
  function onSubmit(e: any) {
    e.preventDefault();
    if (!name.trim()) {
      setShakeField("name");
      nameRef.current?.focus({ preventScroll: true });
      setStatus("이름을 입력해 주세요.");
      return;
    }
    if (!/^\S+@\S+\.\S+$/.test(email)) {
      setShakeField("email");
      emailRef.current?.focus({ preventScroll: true });
      setStatus("올바른 이메일을 입력해 주세요.");
      return;
    }
    setDone(true);
    setStatus("메시지를 보냈습니다.");
  }

  return (
    <form className={styles.cf} style={vars} noValidate onSubmit={onSubmit}>
      <h2 className={styles.title}>연락하기</h2>
      <label className={styles.field}>
        <span className={styles.labelText}>이름</span>
        <input
          ref={nameRef}
          className={`${styles.input} ${shakeField === "name" ? styles.shake : ""}`}
          type="text"
          placeholder="홍길동"
          value={name}
          onChange={(e: any) => setName(e.target.value)}
          onAnimationEnd={() => setShakeField(null)}
        />
      </label>
      <label className={styles.field}>
        <span className={styles.labelText}>이메일</span>
        <input
          ref={emailRef}
          className={`${styles.input} ${shakeField === "email" ? styles.shake : ""}`}
          type="email"
          placeholder="[email protected]"
          value={email}
          onChange={(e: any) => setEmail(e.target.value)}
          onAnimationEnd={() => setShakeField(null)}
        />
      </label>
      <button type="submit" className={`${styles.submit} ${done ? styles.done : ""}`}>
        <span>메시지 보내기</span>
        <svg className={styles.check} viewBox="0 0 20 20" aria-hidden="true"><polyline points="4,10 8,14 16,5" /></svg>
      </button>
      <p className={styles.status} role="status" aria-live="polite">{status}</p>
    </form>
  );
}