03Side drawer

<main class="stage is-demo">
  <button class="trigger" type="button">Cart</button>
  <div class="overlay"></div>
  <div class="drawer" role="dialog" aria-modal="true" aria-labelledby="t3">
    <h2 id="t3">Cart (2)</h2>
    <p>Total ₩48,000. Shipping shown next.</p>
    <button class="drawer__close" type="button">Close</button>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-enter;     // 패널이 밀려 들어오는 시간
$easing: $ease-spring;     // 끝에서 살짝 튕긴다
$color: $subject-cream;    // 강조색(버튼)

@include stage($stage-orange);

.stage { position: relative; }

.trigger {
  border: 0; border-radius: $r-pill;
  padding: clamp(10px, 3.4vmin, 14px) clamp(20px, 7vmin, 30px);
  font-weight: 600;
  font-size: clamp(13px, 4vmin, 16px);
  line-height: 1;
  font-family: inherit;
  color: $stage-orange; background: $subject-cream;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}

.overlay {
  position: fixed; inset: 0;
  background: rgba($stage-ink, .5);
  opacity: 0; pointer-events: none;
  transition: opacity $duration $easing;
}

.drawer {
  position: fixed; right: 0; top: 0; bottom: 0; left: auto;
  transform: translateX(100%);
  width: min(78vw, 260px);
  box-sizing: border-box;
  padding: clamp(14px, 5vmin, 24px);
  background: $stage-paper; color: $stage-ink;
  box-shadow: $shadow-raised;
  pointer-events: none;
  transition: transform $duration $easing;

  h2 { margin: 0 0 6px; font-size: clamp(13px, 4.2vmin, 17px); }
  p  { margin: 0 0 14px; font-size: clamp(10px, 3.2vmin, 13px); color: rgba($stage-ink, .65); }
}

.drawer__close {
  border: 0; border-radius: $r-control; background: $stage-orange; color: $color;
  padding: clamp(7px, 2.6vmin, 9px) clamp(14px, 4.6vmin, 18px);
  font-weight: 600;
  font-size: clamp(11px, 3.4vmin, 13px);
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
}

.stage.is-open .overlay { opacity: 1; pointer-events: auto; }
.stage.is-open .drawer  { transform: translateX(0); pointer-events: auto; }

.stage.is-demo .overlay { animation: overlay-loop $dur-loop ease-in-out infinite; }
.stage.is-demo .drawer  { animation: drawer-loop $dur-loop $easing infinite; }

@keyframes overlay-loop {
  0%   { opacity: 0; }
  15%  { opacity: 1; }
  70%  { opacity: 1; }
  85%  { opacity: 0; }
  100% { opacity: 0; }
}
@keyframes drawer-loop {
  0%   { transform: translateX(100%); }
  15%  { transform: translateX(0); }
  70%  { transform: translateX(0); }
  85%  { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .overlay, .stage.is-demo .drawer { animation: none; }
  .overlay, .drawer { transition-duration: 1ms; }
}

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);
}

.stage {
  position: relative;
}

.trigger {
  border: 0;
  border-radius: 999px;
  padding: clamp(10px, 3.4vmin, 14px) clamp(20px, 7vmin, 30px);
  font-weight: 600;
  font-size: clamp(13px, 4vmin, 16px);
  line-height: 1;
  font-family: inherit;
  color: #ff4d1f;
  background: #fff7e6;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(23, 20, 26, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.drawer {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  left: auto;
  transform: translateX(100%);
  width: min(78vw, 260px);
  box-sizing: border-box;
  padding: clamp(14px, 5vmin, 24px);
  background: #ffffff;
  color: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  pointer-events: none;
  transition: transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.drawer h2 {
  margin: 0 0 6px;
  font-size: clamp(13px, 4.2vmin, 17px);
}
.drawer p {
  margin: 0 0 14px;
  font-size: clamp(10px, 3.2vmin, 13px);
  color: rgba(23, 20, 26, 0.65);
}

.drawer__close {
  border: 0;
  border-radius: 12px;
  background: #ff4d1f;
  color: #fff7e6;
  padding: clamp(7px, 2.6vmin, 9px) clamp(14px, 4.6vmin, 18px);
  font-weight: 600;
  font-size: clamp(11px, 3.4vmin, 13px);
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
}

.stage.is-open .overlay {
  opacity: 1;
  pointer-events: auto;
}

.stage.is-open .drawer {
  transform: translateX(0);
  pointer-events: auto;
}

.stage.is-demo .overlay {
  animation: overlay-loop 2s ease-in-out infinite;
}

.stage.is-demo .drawer {
  animation: drawer-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes overlay-loop {
  0% {
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  70% {
    opacity: 1;
  }
  85% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes drawer-loop {
  0% {
    transform: translateX(100%);
  }
  15% {
    transform: translateX(0);
  }
  70% {
    transform: translateX(0);
  }
  85% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(100%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .overlay, .stage.is-demo .drawer {
    animation: none;
  }
  .overlay, .drawer {
    transition-duration: 1ms;
  }
}

(function () {
  var stage = document.querySelector('.stage');
  var trigger = document.querySelector('.trigger');
  var overlay = document.querySelector('.overlay');
  var close = document.querySelector('.drawer__close');
  function open() { stage.classList.remove('is-demo'); stage.classList.add('is-open'); }
  function shut() { stage.classList.remove('is-open'); }
  trigger.addEventListener('click', open);
  overlay.addEventListener('click', shut);
  close.addEventListener('click', shut);
  document.addEventListener('keydown', function (e) { if (e.key === 'Escape') shut(); });
})();

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

export type SideDrawerProps = {
  triggerLabel: string;
  title: string;
  description: string;
  closeLabel: string;
  /** 패널이 밀려 들어오는 시간 (기본 600ms) */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function SideDrawer({
  triggerLabel,
  title,
  description,
  closeLabel,
  duration = 600,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#fff7e6",
}: SideDrawerProps) {
  const [open, setOpen] = useState(false);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.stage} style={vars}>
      <button type="button" className={styles.trigger} onClick={() => setOpen(true)}>
        {triggerLabel}
      </button>
      <div
        className={open ? `${styles.overlay} ${styles.isOpen}` : styles.overlay}
        onClick={() => setOpen(false)}
      />
      <div
        className={open ? `${styles.drawer} ${styles.isOpen}` : styles.drawer}
        role="dialog"
        aria-modal="true"
      >
        <h2>{title}</h2>
        <p>{description}</p>
        <button type="button" className={styles.close} onClick={() => setOpen(false)}>
          {closeLabel}
        </button>
      </div>
    </div>
  );
}