: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:#1c1c1a;
  --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:calc(100vh - 48px);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}
.home{font-size:13px;color:var(--ink-2);text-decoration:none}
.home:hover{color:var(--ink)}
.brand-title{font-size:17px;font-weight:700;letter-spacing:-.01em}
.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:disabled{opacity:.4;cursor:default}
.btn:disabled:hover{background:transparent}
.btn--solid{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.text-input{height:40px;padding:0 12px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;font:inherit;font-size:14px;color:var(--ink)}
@media (max-width:640px){ .topbar{padding:14px 16px} }

/* ---------- 게임 공통 셸 ---------- */
.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.btn--accent{background:var(--accent);color:#fff;border:none;font-weight:500}
.btn--accent:hover{background:var(--accent);filter:brightness(1.08)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.game{flex:1;display:flex;flex-wrap:wrap;align-items:stretch;min-height:0}
.stage{flex:999 1 420px;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:40px 28px}
.side{flex:1 1 300px;min-width:0;max-width:100%;border-left:1px solid var(--line);background:var(--panel);padding:28px 24px 40px;display:flex;flex-direction:column;gap:28px}
.group{display:flex;flex-direction:column;gap:12px}
.group + .group{border-top:1px solid var(--line-3);padding-top:24px}
.rules{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--ink-2);line-height:1.6;counter-reset:rule}
.rules li{display:flex;gap:10px}
.rules li::before{counter-increment:rule;content:counter(rule,decimal-leading-zero);font-family:var(--mono);font-size:11px;color:var(--accent);padding-top:3px;flex-shrink:0}
.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)}
.best-card{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:16px;border-radius:12px;background:var(--panel-soft)}
.best-val{font-family:var(--mono);font-size:28px;font-weight:500;letter-spacing:-.02em}
.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.seg-btn{flex:1;height:30px;padding:0 10px;background:transparent;color:var(--sub);border:none;border-radius:999px;font-size:12px;cursor:pointer;white-space:nowrap}
.seg-btn.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.link-btn{padding:0;background:none;border:none;font-size:12px;color:var(--muted);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
@media (max-width:640px){
  .stage{padding:24px 16px}
  .side{border-left:none;border-top:1px solid var(--line);padding:24px 16px 40px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.side-note{margin:0;font-size:12px;color:var(--muted);line-height:1.6}


/* ---------- 공룡 런게임 ---------- */
:root{--accent:#f08a3c}
.stage{gap:14px}
.runner{width:min(100%,820px);display:flex;flex-direction:column;gap:10px}
.screen{position:relative;width:100%;aspect-ratio:8/3;border-radius:22px;overflow:hidden;border:3px solid #2c2a26;box-shadow:6px 6px 0 #2c2a26;background:#eaf6ff;touch-action:manipulation;user-select:none;-webkit-user-select:none;cursor:pointer}
canvas#canvas{display:block;width:100%;height:100%;image-rendering:pixelated}
.msg{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:16px;text-align:center;pointer-events:none}
.msg-label{font-family:var(--mono);font-size:12px;font-weight:800;letter-spacing:.3em;color:var(--accent);background:#2c2a26;padding:3px 10px;border-radius:6px}
.msg-title{font-size:24px;letter-spacing:-.01em;color:#2c2a26;text-shadow:0 2px 0 #fff}
.msg-sub{margin:0;font-size:13.5px;font-weight:500;color:#4a4740;text-shadow:0 1px 0 #fff}
.screen.is-night .msg-title{color:#fff;text-shadow:0 2px 0 #10142b}
.screen.is-night .msg-sub{color:#d6dbf5;text-shadow:none}
.pad{display:none;gap:10px}
.pad-btn{flex:1;height:58px;border-radius:16px;border:3px solid #2c2a26;box-shadow:0 4px 0 #2c2a26;font:inherit;font-size:16px;font-weight:700;cursor:pointer;touch-action:none;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none}
.pad-btn span{font-size:12px;margin-right:4px}
.pad-btn--jump{flex:1.4;background:var(--accent);color:#fff}
.pad-btn--duck{background:#fff;color:#2c2a26}
.pad-btn.is-down{transform:translateY(3px);box-shadow:0 1px 0 #2c2a26}
.stage-hint{margin:0;font-size:12.5px;color:var(--muted);text-align:center}
.hint-touch{display:none}
.hero{display:flex;gap:14px;align-items:center}
.hero-art{width:60px;height:54px;flex-shrink:0;image-rendering:pixelated;background:#eef7e8;border-radius:12px;padding:4px}
.hero p{margin:0;font-size:13px;color:var(--ink-2);line-height:1.6}
@media (max-width:640px),(hover:none){ .hint-desk{display:none} .hint-touch{display:inline} .pad{display:flex} }
@media (max-width:640px){
  .screen{aspect-ratio:3/2;border-radius:18px;box-shadow:4px 4px 0 #2c2a26}
  .msg-title{font-size:20px}
}

/* 다크 모드 (인쇄는 라이트 그대로): 장면은 JS가 해질녘 톤으로 낮춰 그림 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#15140f; --surface:#1b1a16; --panel:#201f1a; --panel-soft:#26251f;
    --ink:#eeece6; --ink-hover:#ffffff; --ink-2:#cbc8bf; --sub:#a39f94; --muted:#8d897e;
    --line:#302e28; --line-2:#3b3932; --line-3:#28271f; --hover:#2b2a24; --soft:#28271f; --track:#36342d;
    --accent:#f59a52;
  }
  :root[data-theme="dark"] .btn--solid{color:var(--bg)}
  :root[data-theme="dark"] .seg-btn.is-active{background:var(--track);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .screen{border-color:#4a463d;box-shadow:6px 6px 0 #0a0907;background:#3a4568}
  :root[data-theme="dark"] .msg-label{background:#0d0c0a}
  :root[data-theme="dark"] .pad-btn{border-color:#4a463d;box-shadow:0 4px 0 #0a0907}
  :root[data-theme="dark"] .pad-btn.is-down{box-shadow:0 1px 0 #0a0907}
  :root[data-theme="dark"] .pad-btn--duck{background:var(--panel);color:var(--ink)}
  :root[data-theme="dark"] .pad-btn--jump{color:#1b1408}
  :root[data-theme="dark"] .hero-art{background:#243024}
}
@media screen and (max-width:640px){
  :root[data-theme="dark"] .screen{box-shadow:4px 4px 0 #0a0907}
}