09Bottom sheet palette

<main class="stage">
  <div class="ph is-demo is-open">
    <div class="ph__page" aria-hidden="true">
      <span class="ph__ln" style="width: 56%"></span>
      <span class="ph__ln" style="width: 84%"></span>
      <span class="ph__ln" style="width: 72%"></span>
      <span class="ph__ln" style="width: 40%"></span>
    </div>
    <span class="ph__dim" aria-hidden="true"></span>
    <div class="ph__sheet" role="dialog" aria-modal="true" aria-label="Command palette">
      <button class="ph__grab" id="grab" type="button" aria-label="Close palette"></button>
      <div class="ph__bar">
        <span class="ph__mag" aria-hidden="true"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2"/><path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72"/></g></svg></span>
        <input class="ph__input" id="q" type="text" role="combobox" aria-expanded="true" aria-controls="list" aria-label="Search commands" placeholder="Search commands" autocomplete="off">
      </div>
      <div class="ph__list" id="list" role="listbox" aria-label="Command palette">
        <div class="ph__opt" id="o1" role="option" aria-selected="false" tabindex="-1">Create document</div>
        <div class="ph__opt" id="o2" role="option" aria-selected="false" tabindex="-1">Invite member</div>
        <div class="ph__opt" id="o3" role="option" aria-selected="false" tabindex="-1">Open settings</div>
      </div>
    </div>
  </div>
</main>

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

$duration: $dur-base;
$easing: $ease-spring;
$color: $subject-blue;

@include stage($stage-ink);

// 폰 화면 한 칸 — 시트는 이 상자 바닥에서 올라온다
.ph {
  position: relative;
  box-sizing: border-box;
  width: 168px; height: 156px;
  overflow: hidden;
  border-radius: $r-card;
  background: $subject-cream;
  box-shadow: $shadow-raised;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $subject-ink;
}
.ph__page { box-sizing: border-box; padding: $sp-4 $sp-3; }
.ph__ln {
  display: block;
  height: 6px;
  margin: 0 0 $sp-2;
  border-radius: $r-xs;
  background: rgba(23, 20, 26, .14);
}
.ph__dim {
  position: absolute;
  inset: 0;
  background: rgba(23, 20, 26, .45);
  opacity: 0;
}
.ph.is-open .ph__dim { opacity: 1; }

.ph__sheet {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  box-sizing: border-box;
  padding: $sp-2 $sp-2 calc(#{$sp-3} + env(safe-area-inset-bottom));
  border-radius: $r-card $r-card 0 0;
  background: #fff;
  box-shadow: $shadow-raised;
  transform: translateY(100%);
}
.ph.is-open .ph__sheet { transform: translateY(0); }
.ph__grab {
  display: block;
  width: 32px; height: 4px;
  margin: 0 auto $sp-2;
  padding: 0;
  border: 0;
  border-radius: $r-pill;
  background: rgba(23, 20, 26, .2);
  cursor: pointer;
}
.ph__grab:focus-visible { outline: 2px solid $color; outline-offset: 4px; }
.ph__bar {
  box-sizing: border-box;
  height: 28px;
  display: flex; align-items: center; gap: $sp-2;
  padding: 0 $sp-2;
  border-radius: $r-sm;
  background: rgba(23, 20, 26, .05);
}
.ph__mag { display: inline-flex; color: rgba(23, 20, 26, .42); }
.ph__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0; background: transparent;
  font-family: inherit;
  font-size: 11px; font-weight: 600;
  color: $subject-ink;
}
.ph__input:focus-visible { outline: 2px solid $color; outline-offset: 2px; border-radius: $r-xs; }
.ph__list { margin: $sp-2 0 0; }
.ph__opt {
  box-sizing: border-box;
  height: 22px;
  display: flex; align-items: center;
  padding: 0 $sp-2;
  border-radius: $r-sm;
  font-size: 11px; font-weight: 600;
  color: rgba(23, 20, 26, .82);
  white-space: nowrap;
  cursor: pointer;
}
.ph__opt.is-at { background: rgba(47, 109, 246, .12); color: $color; }

// ── 자동 루프: 시트가 바닥으로 내려갔다 같은 길로 다시 올라온다 ──
// 올라올 때와 내려갈 때가 같은 축(아래 끝)이라 한 바퀴 끝에 순간이동하는 프레임이 없다
.ph.is-demo .ph__sheet { animation: sheet-slide $dur-loop $easing infinite; }
.ph.is-demo .ph__dim { animation: dim-fade $dur-loop $easing infinite; }
@keyframes sheet-slide {
  0%, 34%   { transform: translateY(0); }
  56%, 70%  { transform: translateY(100%); }
  92%, 100% { transform: translateY(0); }
}
@keyframes dim-fade {
  0%, 34%   { opacity: 1; }
  56%, 70%  { opacity: 0; }
  92%, 100% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .ph.is-demo .ph__sheet,
  .ph.is-demo .ph__dim { animation: none !important; }
}

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);
}

.ph {
  position: relative;
  box-sizing: border-box;
  width: 168px;
  height: 156px;
  overflow: hidden;
  border-radius: 16px;
  background: #fff7e6;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
}

.ph__page {
  box-sizing: border-box;
  padding: 16px 12px;
}

.ph__ln {
  display: block;
  height: 6px;
  margin: 0 0 8px;
  border-radius: 4px;
  background: rgba(23, 20, 26, 0.14);
}

.ph__dim {
  position: absolute;
  inset: 0;
  background: rgba(23, 20, 26, 0.45);
  opacity: 0;
}

.ph.is-open .ph__dim {
  opacity: 1;
}

.ph__sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  box-sizing: border-box;
  padding: 8px 8px calc(12px + env(safe-area-inset-bottom));
  border-radius: 16px 16px 0 0;
  background: #fff;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  transform: translateY(100%);
}

.ph.is-open .ph__sheet {
  transform: translateY(0);
}

.ph__grab {
  display: block;
  width: 32px;
  height: 4px;
  margin: 0 auto 8px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.2);
  cursor: pointer;
}

.ph__grab:focus-visible {
  outline: 2px solid #2f6df6;
  outline-offset: 4px;
}

.ph__bar {
  box-sizing: border-box;
  height: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  border-radius: 8px;
  background: rgba(23, 20, 26, 0.05);
}

.ph__mag {
  display: inline-flex;
  color: rgba(23, 20, 26, 0.42);
}

.ph__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  color: #17141a;
}

.ph__input:focus-visible {
  outline: 2px solid #2f6df6;
  outline-offset: 2px;
  border-radius: 4px;
}

.ph__list {
  margin: 8px 0 0;
}

.ph__opt {
  box-sizing: border-box;
  height: 22px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 600;
  color: rgba(23, 20, 26, 0.82);
  white-space: nowrap;
  cursor: pointer;
}

.ph__opt.is-at {
  background: rgba(47, 109, 246, 0.12);
  color: #2f6df6;
}

.ph.is-demo .ph__sheet {
  animation: sheet-slide 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.ph.is-demo .ph__dim {
  animation: dim-fade 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes sheet-slide {
  0%, 34% {
    transform: translateY(0);
  }
  56%, 70% {
    transform: translateY(100%);
  }
  92%, 100% {
    transform: translateY(0);
  }
}
@keyframes dim-fade {
  0%, 34% {
    opacity: 1;
  }
  56%, 70% {
    opacity: 0;
  }
  92%, 100% {
    opacity: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ph.is-demo .ph__sheet,
  .ph.is-demo .ph__dim {
    animation: none !important;
  }
}

// 실제 동작: ⌘K(Ctrl+K)로 시트를 올리고 내린다. 손잡이를 누르거나 Escape 를 쳐도 같은 길로 내려간다.
var ph = document.querySelector('.ph');
var input = document.getElementById('q');
var grab = document.getElementById('grab');
var opts = [].slice.call(document.querySelectorAll('.ph__opt'));
var at = -1;

function open(on) {
  ph.classList.remove('is-demo');
  ph.classList.toggle('is-open', on);
  if (on) input.focus({ preventScroll: true });
  else { opts.forEach(function (o) { o.classList.remove('is-at'); }); at = -1; }
}
grab.addEventListener('click', function () { open(false); });
document.addEventListener('keydown', function (e) {
  var k = e.key.toLowerCase();
  if ((e.metaKey || e.ctrlKey) && k === 'k') {
    open(!ph.classList.contains('is-open')); e.preventDefault(); return;
  }
  if (!ph.classList.contains('is-open')) return;
  if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
    ph.classList.remove('is-demo');
    at = Math.max(0, Math.min(at + (e.key === 'ArrowDown' ? 1 : -1), opts.length - 1));
    opts.forEach(function (o, i) { o.classList.toggle('is-at', i === at); });
    input.setAttribute('aria-activedescendant', opts[at].id);
    e.preventDefault();
  } else if (e.key === 'Enter' && opts[at]) {
    opts.forEach(function (o) { o.setAttribute('aria-selected', String(o === opts[at])); });
    e.preventDefault();
  } else if (e.key === 'Escape') {
    open(false);
  }
});
opts.forEach(function (o, i) {
  o.addEventListener('mousemove', function () {
    ph.classList.remove('is-demo');
    at = i; opts.forEach(function (x, k) { x.classList.toggle('is-at', k === i); });
  });
});

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

export type SheetPaletteProps = {
  placeholder?: string;
  options?: string[];
  closeLabel?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type KeyEvt = { key: string; preventDefault: () => void };

export default function SheetPalette({
  placeholder = "Search commands",
  options = ["Create document", "Invite member", "Open settings"],
  closeLabel = "Close palette",
  duration = 300,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#2f6df6",
}: SheetPaletteProps) {
  const [open, setOpen] = useState(true);
  const [at, setAt] = useState(-1);
  const [picked, setPicked] = useState<string | null>(null);
  const inputRef = useRef<HTMLInputElement>(null);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  useEffect(() => {
    function onKey(e: KeyboardEvent) {
      if ((e.metaKey || e.ctrlKey) && e.key.toLowerCase() === "k") {
        e.preventDefault();
        setOpen((v) => !v);
      }
    }
    document.addEventListener("keydown", onKey);
    return () => document.removeEventListener("keydown", onKey);
  }, []);

  useEffect(() => {
    if (open) inputRef.current?.focus({ preventScroll: true });
    else setAt(-1);
  }, [open]);

  return (
    <div className={`${styles.ph} ${open ? styles.isOpen : ""}`} style={vars}>
      <div className={styles.page} aria-hidden="true">
        {[56, 84, 72, 40].map((w) => <span className={styles.ln} style={{ width: `${w}%` }} key={w} />)}
      </div>
      <span className={styles.dim} aria-hidden="true" />
      <div className={styles.sheet} role="dialog" aria-modal="true" aria-label="Command palette">
        {/* 손잡이 막대는 장식이 아니라 닫는 버튼이다 — 터치에서 시트를 내리는 유일한 길 */}
        <button className={styles.grab} type="button" aria-label={closeLabel} onClick={() => setOpen(false)} />
        <div className={styles.bar}>
          <span className={styles.mag} aria-hidden="true">
            <svg viewBox="0 0 256 256" width="13" height="13">
              <g fill="currentColor">
                <path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2" />
                <path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72" />
              </g>
            </svg>
          </span>
          <input
            ref={inputRef}
            className={styles.input}
            type="text"
            role="combobox"
            aria-expanded={open}
            aria-controls="ms-list"
            aria-activedescendant={at >= 0 ? `ms-o${at}` : undefined}
            aria-label={placeholder}
            placeholder={placeholder}
            autoComplete="off"
            onKeyDown={(e: KeyEvt) => {
              if (e.key === "ArrowDown" || e.key === "ArrowUp") {
                e.preventDefault();
                setAt((a) => Math.max(0, Math.min(a + (e.key === "ArrowDown" ? 1 : -1), options.length - 1)));
              } else if (e.key === "Enter" && at >= 0) {
                e.preventDefault();
                setPicked(options[at]);
              } else if (e.key === "Escape") {
                setOpen(false);
              }
            }}
          />
        </div>
        <div className={styles.list} id="ms-list" role="listbox" aria-label="Command palette">
          {options.map((label, i) => (
            <div
              key={label}
              id={`ms-o${i}`}
              className={`${styles.opt} ${i === at ? styles.isAt : ""}`}
              role="option"
              aria-selected={label === picked}
              tabIndex={-1}
              onMouseMove={() => setAt(i)}
              onClick={() => setPicked(label)}
            >
              {label}
            </div>
          ))}
        </div>
      </div>
    </div>
  );
}