:root{
  --bg:#f5f4f0; --surface:#fbfbf9; --panel:#ffffff; --panel-soft:#f7f6f2;
  --ink:#1c1c1a; --ink-hover:#3a3935; --ink-2:#55534d; --sub:#7a776f; --muted:#8a877f;
  --line:#e3e1db; --line-2:#dcdad3; --line-3:#efeee9; --hover:#efeee9; --soft:#f3f2ee; --track:#ebe9e3;
  --accent:#ff3d7f;
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit}
.mono-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.app{min-height:100vh;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 28px;border-bottom:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:14px;min-width:0;flex-wrap:wrap}
.brand-title{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.btn{height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer}
.btn:hover{background:var(--hover)}
.btn--solid{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.btn[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:640px){ .topbar{padding:14px 16px} }

/* ---------- 레이아웃 ---------- */
.pp{flex:1;display:flex;flex-wrap:wrap;align-items:stretch}
.stage-wrap{flex:999 1 520px;min-width:0;padding:24px 28px;display:flex}
.panel{flex:1 1 300px;max-width:100%;min-width:0;background:var(--panel);border-left:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:24px}
.group{display:flex;flex-direction:column;gap:12px}
.group + .group{border-top:1px solid var(--line-3);padding-top:22px}

/* ---------- 스테이지 ---------- */
.stage{position:relative;flex:1;min-height:420px;height:clamp(420px,calc(100vh - 220px),720px);border-radius:24px;overflow:hidden;
  background:radial-gradient(120% 90% at 50% 110%,#1a1030 0%,#0a0912 55%,#05050a 100%);
  box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 30px 70px -30px rgba(255,61,127,.45),0 0 0 1px #15131f;
  touch-action:none;user-select:none;-webkit-user-select:none;cursor:crosshair;outline:none}
.stage:focus-visible{box-shadow:0 0 0 3px var(--accent),0 30px 70px -30px rgba(255,61,127,.45)}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hud{position:absolute;left:16px;top:14px;display:flex;gap:14px;align-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.55);pointer-events:none}
.hud b{color:#fff;font-weight:500;font-variant-numeric:tabular-nums}
.hud-mode{padding:3px 9px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#fff;letter-spacing:.14em}
.stage-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);margin:0;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.75);font-size:12.5px;white-space:nowrap;pointer-events:none;transition:opacity .6s}
.stage-hint.is-hidden{opacity:0}
.paused-badge{position:absolute;right:16px;top:12px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:#fff;background:var(--accent);padding:4px 10px;border-radius:999px}

/* ---------- 모드 ---------- */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mode{position:relative;display:grid;grid-template-columns:auto 1fr auto;grid-template-areas:"ico name key" "desc desc desc";align-items:center;column-gap:8px;row-gap:4px;text-align:left;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--surface);cursor:pointer;transition:border-color .15s,transform .15s,box-shadow .15s}
.mode:hover{border-color:var(--line-2);transform:translateY(-1px)}
.mode[aria-checked="true"]{border-color:var(--ink);background:var(--ink);color:#fff;box-shadow:0 10px 24px -14px rgba(255,61,127,.9)}
.mode-ico{grid-area:ico;font-size:18px;line-height:1}
.mode-name{grid-area:name;font-weight:700;font-size:14px;white-space:nowrap}
.mode-key{grid-area:key;font-family:var(--mono);font-size:10px;padding:1px 6px;border-radius:5px;border:1px solid currentColor;opacity:.45}
.mode-desc{grid-area:desc;font-size:11.5px;line-height:1.45;color:var(--sub)}
.mode[aria-checked="true"] .mode-desc{color:rgba(255,255,255,.65)}

/* ---------- 테마 ---------- */
.themes{display:flex;flex-wrap:wrap;gap:8px}
.theme{display:flex;align-items:center;gap:8px;height:34px;padding:0 12px 0 6px;border:1px solid var(--line);border-radius:999px;background:var(--surface);cursor:pointer;font-size:12.5px}
.theme:hover{border-color:var(--line-2)}
.theme[aria-checked="true"]{border-color:var(--ink);box-shadow:0 0 0 1px var(--ink) inset}
.theme-dots{display:flex}
.theme-dots i{width:14px;height:14px;border-radius:50%;margin-left:-4px;border:1.5px solid var(--panel)}
.theme-dots i:first-child{margin-left:0}

/* ---------- 슬라이더 ---------- */
.slider-row{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.slider-row output{font-family:var(--mono);font-size:12px;color:var(--ink)}
input[type=range]{width:100%;margin:0 0 6px;accent-color:var(--accent)}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer}
.check input{accent-color:var(--accent);width:16px;height:16px}

.keys{display:flex;flex-direction:column;gap:8px;font-size:12px;color:var(--ink-2)}
.keys div{display:flex;justify-content:space-between;align-items:center;gap:12px}
.kbd{display:inline-block;font-family:var(--mono);font-size:11px;line-height:1.4;padding:1px 6px;border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px;background:var(--surface);color:var(--ink)}

@media (max-width:640px){
  .stage-wrap{padding:16px}
  .stage{min-height:360px;height:62vh;border-radius:18px}
  .panel{border-left:none;border-top:1px solid var(--line);padding:20px 16px 32px}
  .hud{left:12px;top:12px;gap:10px;font-size:10px}
  .stage-hint{font-size:12px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  .mode,.stage-hint{transition:none}
}

/* 다크 모드 (인쇄는 라이트 그대로) — 스테이지는 원래부터 밤하늘 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#141318; --surface:#1a1920; --panel:#1f1e26; --panel-soft:#24232c;
    --ink:#ecebf0; --ink-hover:#ffffff; --ink-2:#c9c7d1; --sub:#a09eab; --muted:#8a8895;
    --line:#2e2d36; --line-2:#393843; --line-3:#26252d; --hover:#2a2932; --soft:#26252d; --track:#34333d;
  }
  :root[data-theme="dark"] .btn--solid{color:var(--bg)}
  :root[data-theme="dark"] .stage{box-shadow:0 0 0 1px var(--line-2),0 30px 70px -30px rgba(255,61,127,.35)}
  :root[data-theme="dark"] .stage:focus-visible{box-shadow:0 0 0 3px var(--accent),0 30px 70px -30px rgba(255,61,127,.35)}
  :root[data-theme="dark"] .mode[aria-checked="true"]{border-color:var(--accent);background:rgba(255,61,127,.16);color:var(--ink);box-shadow:0 10px 24px -14px rgba(255,61,127,.7)}
  :root[data-theme="dark"] .mode[aria-checked="true"] .mode-desc{color:var(--ink-2)}
}
/* 영어판: 모드 이름이 길어서 이름을 아이콘 아래 줄로 */
html[lang="en"] .modes{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
html[lang="en"] .mode{grid-template-areas:"ico . key" "name name name" "desc desc desc"}