09Nút mắt hiện mật khẩu

<main class="stage">
  <div class="pw is-demo">
    <label class="pw__label" for="pw-input">Mật khẩu</label>
    <div class="pw__frame">
      <input id="pw-input" class="pw__input" type="password" placeholder="Nhập mật khẩu" autocomplete="current-password">
      <button type="button" class="pw__eye" aria-label="Hiện mật khẩu" aria-pressed="false">
        <svg class="pw__icon pw__icon--eye" viewBox="0 0 24 24" aria-hidden="true"><path d="M2 12s3.6-6.5 10-6.5S22 12 22 12s-3.6 6.5-10 6.5S2 12 2 12Z"/><circle cx="12" cy="12" r="2.6"/></svg>
        <svg class="pw__icon pw__icon--off" viewBox="0 0 24 24" aria-hidden="true"><path d="M2 12s3.6-6.5 10-6.5c1.7 0 3.2.4 4.5 1.1M22 12s-1.4 2.5-4 4.4M6.5 6.5 3 3m1.5 1.5L21 21"/></svg>
      </button>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-quick;                 // 아이콘이 바뀌는 시간
$easing: cubic-bezier(.3, 1.6, .4, 1); // 스프링 오버슛 — 아이콘 스케일이 1 을 지나 1.12 까지 뻗었다가 돌아온다
$color: $subject-cream;                // 아이콘·포커스 색

@include stage($stage-ink);

.pw { width: min(240px, 82vw); }
.pw__label { display: block; margin-bottom: $sp-2; font-weight: 700; font-size: 13px; line-height: 1; font-family: inherit; color: rgba($subject-cream, .75); }
.pw__frame { position: relative; }
.pw__input {
  box-sizing: border-box;
  width: 100%;
  border: 2px solid rgba($subject-cream, .35);
  border-radius: $r-control;
  padding: $sp-3 $sp-10 $sp-3 $sp-4;
  font-weight: 500;
  font-size: clamp(14px, 4vw, 16px);
  line-height: 1;
  font-family: inherit;
  color: $subject-cream;
  background: transparent;
  letter-spacing: .06em;

  &:focus { outline: none; border-color: $color; }
}
.pw__eye {
  position: absolute;
  right: $sp-1; top: 50%;
  transform: translateY(-50%);
  width: 30px; height: 30px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  display: grid;
  place-items: center;
  cursor: pointer;
}
// 토글 누르는 순간 버튼 중심에서 번지는 radial 글로우 확산 한 겹
.pw__eye::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba($color, .4) 0%, rgba($color, 0) 70%);
  opacity: 0;
  pointer-events: none;
}
.pw__eye.is-shown::after { animation: pw-bloom $dur-quick $ease-out; }

@keyframes pw-bloom {
  0%   { opacity: 0; transform: scale(.5); }
  40%  { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.3); }
}
.pw__icon {
  position: absolute;
  width: 19px; height: 19px;
  fill: none;
  stroke: $color;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transform: scale(1);
  opacity: 1;
  transition: transform $duration $easing, opacity $duration $easing;
}
.pw__icon--off { transform: scale(.5); opacity: 0; }
.pw__eye.is-shown .pw__icon--eye { transform: scale(.5); opacity: 0; }
.pw__eye.is-shown .pw__icon--off { transform: scale(1); opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  .pw__icon { transition: none; }
  .pw__eye.is-shown::after { animation: none; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.pw {
  width: min(240px, 82vw);
}

.pw__label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.75);
}

.pw__frame {
  position: relative;
}

.pw__input {
  box-sizing: border-box;
  width: 100%;
  border: 2px solid rgba(255, 247, 230, 0.35);
  border-radius: 12px;
  padding: 12px 40px 12px 16px;
  font-weight: 500;
  font-size: clamp(14px, 4vw, 16px);
  line-height: 1;
  font-family: inherit;
  color: #fff7e6;
  background: transparent;
  letter-spacing: 0.06em;
}
.pw__input:focus {
  outline: none;
  border-color: #fff7e6;
}

.pw__eye {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.pw__eye::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 247, 230, 0.4) 0%, rgba(255, 247, 230, 0) 70%);
  opacity: 0;
  pointer-events: none;
}

.pw__eye.is-shown::after {
  animation: pw-bloom 220ms ease-out;
}

@keyframes pw-bloom {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(1.3);
  }
}
.pw__icon {
  position: absolute;
  width: 19px;
  height: 19px;
  fill: none;
  stroke: #fff7e6;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transform: scale(1);
  opacity: 1;
  transition: transform 220ms cubic-bezier(0.3, 1.6, 0.4, 1), opacity 220ms cubic-bezier(0.3, 1.6, 0.4, 1);
}

.pw__icon--off {
  transform: scale(0.5);
  opacity: 0;
}

.pw__eye.is-shown .pw__icon--eye {
  transform: scale(0.5);
  opacity: 0;
}

.pw__eye.is-shown .pw__icon--off {
  transform: scale(1);
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .pw__icon {
    transition: none;
  }
  .pw__eye.is-shown::after {
    animation: none;
  }
}

// 실사용: 클릭으로 input type 을 바꾼다. 데모(.is-demo)는 주기적으로 토글 (7줄)
var btn = document.querySelector('.is-demo .pw__eye');
var input = document.querySelector('.is-demo .pw__input');
var t = function () {
  var show = input.type === 'password';
  input.type = show ? 'text' : 'password';
  btn.setAttribute('aria-pressed', String(show));
  btn.classList.toggle('is-shown', show);
};
t(); setInterval(t, 450);

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

export type PasswordEyeToggleProps = {
  id?: string;
  label?: string;
  placeholder?: string;
  showLabel?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function PasswordEyeToggle({
  id = "pw-input",
  label = "Password",
  placeholder = "Enter your password",
  showLabel = "Show password",
  duration = 220,
  easing = "cubic-bezier(.3,1.6,.4,1)",
  color = "#fff7e6",
}: PasswordEyeToggleProps) {
  const [value, setValue] = useState("");
  const [shown, setShown] = useState(false);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.pw} style={vars}>
      <label htmlFor={id} className={styles.label}>{label}</label>
      <div className={styles.frame}>
        <input
          id={id}
          className={styles.input}
          type={shown ? "text" : "password"}
          placeholder={placeholder}
          autoComplete="current-password"
          value={value}
          onChange={(e: ChangeEvent<HTMLInputElement>) => setValue(e.target.value)}
        />
        <button
          type="button"
          className={shown ? `${styles.eye} ${styles.shown}` : styles.eye}
          aria-label={showLabel}
          aria-pressed={shown}
          onClick={() => setShown((v) => !v)}
        >
          <svg className={`${styles.icon} ${styles.eyeIcon}`} viewBox="0 0 24 24" aria-hidden="true"><path d="M2 12s3.6-6.5 10-6.5S22 12 22 12s-3.6 6.5-10 6.5S2 12 2 12Z" /><circle cx="12" cy="12" r="2.6" /></svg>
          <svg className={`${styles.icon} ${styles.offIcon}`} viewBox="0 0 24 24" aria-hidden="true"><path d="M2 12s3.6-6.5 10-6.5c1.7 0 3.2.4 4.5 1.1M22 12s-1.4 2.5-4 4.4M6.5 6.5 3 3m1.5 1.5L21 21" /></svg>
        </button>
      </div>
    </div>
  );
}