09Clay buttons & inputs

<main class="stage">
  <div class="uiclay">
    <button class="uiclay__btn is-demo" type="button">Save</button>
    <label class="uiclay__field is-demo">
      <input class="uiclay__input" type="text" placeholder="Enter your name" readonly>
    </label>
  </div>
</main>

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

$duration: $dur-loop;       // 눌림·포커스 전환의 한 주기
$easing: $ease-pop;         // 눌림 곡선
$color: $subject-blue;      // 포커스 글로우 색

@include stage($stage-ink);

.uiclay {
  display: flex;
  flex-direction: column;
  gap: $sp-4;
  width: clamp(220px, 70vw, 300px);
}
.uiclay__btn {
  border: 0;
  border-radius: $r-control;
  background: $subject-blue-deep;
  color: $subject-cream;
  padding: $sp-3 $sp-5;
  font-weight: 700; font-size: clamp(12px, 2.8vw, 14px); line-height: 1;
  box-shadow: 6px 6px 12px rgba($stage-ink, .3), -4px -4px 10px rgba($stage-paper, .35);
  animation: btnPress $duration $easing infinite;
}
.uiclay__field {
  position: relative;
  display: block;
  border-radius: $r-control;
  background: rgba($stage-paper, .06);
  padding: $sp-1;
  box-shadow: inset 3px 3px 6px rgba($stage-ink, .25), inset -3px -3px 6px rgba($stage-paper, .25);
  animation: focusGlow $duration $easing infinite;
}
.uiclay__input {
  width: 100%;
  box-sizing: border-box;
  border: 0;
  background: transparent;
  border-radius: $r-control;
  padding: $sp-3 $sp-4;
  color: $subject-cream;
  font-weight: 500; font-size: clamp(12px, 2.8vw, 14px); line-height: 1;
  outline: none;
}
.uiclay__input::placeholder { color: rgba($subject-cream, .5); }

// 데모: 버튼은 눌리며 그림자가 안으로 뒤집히고, 입력창은 포커스 글로우가 켜졌다 꺼진다
@keyframes btnPress {
  0%, 55%, 100% {
    box-shadow: 6px 6px 12px rgba($stage-ink, .3), -4px -4px 10px rgba($stage-paper, .35);
    transform: scale(1);
  }
  75% {
    box-shadow: inset 4px 4px 8px rgba($stage-ink, .35), inset -4px -4px 8px rgba($stage-paper, .3);
    transform: scale(.97);
  }
}
@keyframes focusGlow {
  0%, 55%, 100% {
    box-shadow: inset 3px 3px 6px rgba($stage-ink, .25), inset -3px -3px 6px rgba($stage-paper, .25);
  }
  75% {
    box-shadow: inset 2px 2px 4px rgba($stage-ink, .15), inset -2px -2px 4px rgba($stage-paper, .15), 0 0 0 3px rgba($color, .45);
  }
}

@media (prefers-reduced-motion: reduce) {
  .uiclay__btn, .uiclay__field { 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: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.uiclay {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: clamp(220px, 70vw, 300px);
}

.uiclay__btn {
  border: 0;
  border-radius: 12px;
  background: #0a4fe8;
  color: #fff7e6;
  padding: 12px 20px;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 14px);
  line-height: 1;
  box-shadow: 6px 6px 12px rgba(23, 20, 26, 0.3), -4px -4px 10px rgba(255, 255, 255, 0.35);
  animation: btnPress 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.uiclay__field {
  position: relative;
  display: block;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  padding: 4px;
  box-shadow: inset 3px 3px 6px rgba(23, 20, 26, 0.25), inset -3px -3px 6px rgba(255, 255, 255, 0.25);
  animation: focusGlow 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.uiclay__input {
  width: 100%;
  box-sizing: border-box;
  border: 0;
  background: transparent;
  border-radius: 12px;
  padding: 12px 16px;
  color: #fff7e6;
  font-weight: 500;
  font-size: clamp(12px, 2.8vw, 14px);
  line-height: 1;
  outline: none;
}

.uiclay__input::placeholder {
  color: rgba(255, 247, 230, 0.5);
}

@keyframes btnPress {
  0%, 55%, 100% {
    box-shadow: 6px 6px 12px rgba(23, 20, 26, 0.3), -4px -4px 10px rgba(255, 255, 255, 0.35);
    transform: scale(1);
  }
  75% {
    box-shadow: inset 4px 4px 8px rgba(23, 20, 26, 0.35), inset -4px -4px 8px rgba(255, 255, 255, 0.3);
    transform: scale(0.97);
  }
}
@keyframes focusGlow {
  0%, 55%, 100% {
    box-shadow: inset 3px 3px 6px rgba(23, 20, 26, 0.25), inset -3px -3px 6px rgba(255, 255, 255, 0.25);
  }
  75% {
    box-shadow: inset 2px 2px 4px rgba(23, 20, 26, 0.15), inset -2px -2px 4px rgba(255, 255, 255, 0.15), 0 0 0 3px rgba(47, 109, 246, 0.45);
  }
}
@media (prefers-reduced-motion: reduce) {
  .uiclay__btn, .uiclay__field {
    animation: none !important;
    transform: none;
  }
}

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

export type ButtonsInputsClayProps = {
  buttonLabel?: string;
  placeholder?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function ButtonsInputsClay({
  buttonLabel = "저장하기",
  placeholder = "이름을 입력하세요",
  duration = 2000,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  color = "#0a4fe8",
}: ButtonsInputsClayProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.ui} style={vars}>
      <button type="button" className={styles.btn}>{buttonLabel}</button>
      <label className={styles.field}>
        <input className={styles.input} type="text" placeholder={placeholder} readOnly />
      </label>
    </div>
  );
}