:root{
  --paper:#F3F6F4;--surface:#FFFFFF;--ink:#1C2536;--ink-soft:#3E4A5E;--line:#C9D3CE;
  --btn-bg:#2B3F73;--btn-ink:#FFFFFF;--btn2-bg:#E4EAF6;--btn2-ink:#1F2F5C;
  --jade:#256E4F;--persimmon:#C85E14;--muted-bg:#E9EDEB;
  --sans:"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",system-ui,sans-serif;
  --serif:"AppleMyungjo","Batang","Noto Serif KR",serif;
  font-size:20px;box-sizing:border-box;color-scheme:light;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#121826;--surface:#1B2334;--ink:#EEF2F7;--ink-soft:#C0C9D6;--line:#34405A;
    --btn-bg:#A9BCF0;--btn-ink:#10172A;--btn2-bg:#26324A;--btn2-ink:#DCE5F7;
    --jade:#7FD1A8;--persimmon:#F4A35C;--muted-bg:#242C3D;color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#121826;--surface:#1B2334;--ink:#EEF2F7;--ink-soft:#C0C9D6;--line:#34405A;
  --btn-bg:#A9BCF0;--btn-ink:#10172A;--btn2-bg:#26324A;--btn2-ink:#DCE5F7;
  --jade:#7FD1A8;--persimmon:#F4A35C;--muted-bg:#242C3D;color-scheme:dark;
}
html{scroll-padding-top:env(safe-area-inset-top,0px);-webkit-text-size-adjust:100%}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.6}
#app{max-width:34rem;margin:0 auto;padding:1rem 1rem 2.5rem}
h2,p{margin:0}
button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}
img{max-width:100%}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--persimmon);outline-offset:3px}

/* 소리 버튼: 어느 화면에서나 오른쪽 위 */
.sound-btn{position:fixed;z-index:10000;top:calc(env(safe-area-inset-top,0px) + 1rem);right:max(1rem,calc((100vw - 34rem) / 2 + 1rem));
  min-height:2.6rem;padding:.3rem .85rem;border:1px solid var(--line);border-radius:12px;background:var(--surface);font-size:.95rem}
.sound-btn[aria-pressed="true"]{color:var(--ink-soft);background:var(--muted-bg)}

/* 처음 화면: 스테이지 번호, 그림, 시작하기 */
.home{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.1rem;min-height:calc(100vh - 3.5rem);min-height:calc(100dvh - 3.5rem);padding-top:3rem}
.stage{font-family:var(--serif);font-weight:700;font-size:1.5rem;line-height:1.3}
.home-pic{display:block;width:auto;height:auto;max-width:100%;max-height:58vh;border-radius:12px;border:1px solid var(--line)}
.btn.start{min-height:4rem;font-size:1.35rem}

.topbar{display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}
.home-btn{flex:none;border:1px solid var(--line);background:var(--surface);border-radius:12px;min-height:2.6rem;padding:.3rem .85rem;font-size:.95rem}
.lead{font-size:1.2rem;font-weight:400;line-height:1.5;margin:.2rem 0 .3rem;word-break:keep-all}
.sub{font-size:.95rem;color:var(--ink-soft);margin-bottom:.9rem;word-break:keep-all}
.btn-row{display:grid;gap:.7rem;margin-top:1.2rem}
.btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:3.3rem;padding:.6rem 1rem;border:0;border-radius:14px;background:var(--btn-bg);color:var(--btn-ink);font-size:1.1rem}
.btn.secondary{background:var(--btn2-bg);color:var(--btn2-ink)}

/* 퍼즐 */
.jhead-text{margin-bottom:.7rem}
.jhead-text .lead{font-size:1.05rem;margin:0}
.jhead-text .sub{margin:.15rem 0 0}
.jplay{position:relative;width:100%;margin-top:.3rem;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.jframe{position:absolute;top:0;border-radius:6px;background:var(--muted-bg);box-shadow:inset 0 0 0 2px var(--line)}
.jframe.done{box-shadow:inset 0 0 0 3px var(--jade)}
.jp{position:absolute;z-index:2;touch-action:none;cursor:grab;filter:drop-shadow(0 2px 3px rgba(0,0,0,.35))}
.jp.drag{cursor:grabbing;filter:drop-shadow(0 6px 10px rgba(0,0,0,.4))}
.jp.placed{filter:none;cursor:default;pointer-events:none}
.jp.fly{transition:left .45s ease,top .45s ease}
.jpeek{position:absolute;top:0;border-radius:6px;border:3px solid var(--persimmon);object-fit:cover;cursor:pointer}
.jtools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.5rem;margin-top:.8rem}
.jtools .btn{min-height:3rem;font-size:1rem;padding:.5rem .3rem}

/* 완성 화면 */
.result{text-align:center;padding:3rem 0 .4rem}
.result-img{display:block;width:auto;height:auto;max-width:92%;max-height:50vh;margin:0 auto;border-radius:12px;border:3px solid var(--jade)}
.result-title{font-family:var(--serif);font-weight:700;font-size:1.6rem;line-height:1.4;margin-top:.8rem;word-break:keep-all}
.result-detail{font-size:1.05rem;color:var(--ink-soft);margin-top:.4rem;line-height:1.6;word-break:keep-all}

@media (prefers-reduced-motion:reduce){.jp.fly{transition:none}}