: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}
}

/* ---------- 지뢰찾기 ---------- */
:root{--accent:#ff3b30;--cell:30px;--gap:2px;--cell-fs:16px}
.level-seg{width:100%;max-width:520px}
.level-seg .seg-btn{height:38px;display:flex;align-items:center;justify-content:center;gap:6px}
.level-seg small{font-family:var(--mono);font-size:10px;color:var(--muted);letter-spacing:.02em}
.level-seg .is-active{color:var(--ink);font-weight:700}
.level-seg .is-active small{color:var(--accent)}

.ms{width:100%;display:flex;flex-direction:column;align-items:center;gap:12px;min-width:0}
.status{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:14px;background:#1f1d1a}
.lcd{display:flex;flex-direction:column;gap:2px;min-width:72px}
.lcd--right{align-items:flex-end}
.lcd .mono-label{font-size:9px;color:#8a877f}
.lcd-num{font-family:var(--mono);font-size:26px;font-weight:800;line-height:1;color:var(--accent);text-shadow:0 0 10px rgba(255,59,48,.55);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.face{width:46px;height:46px;flex-shrink:0;border-radius:999px;border:none;background:#ffd23f;color:#1f1d1a;font-family:var(--mono);font-size:16px;font-weight:800;cursor:pointer;box-shadow:inset 0 -3px 0 rgba(0,0,0,.18);transition:transform .1s}
.face:hover{transform:scale(1.06)}
.face:active{transform:scale(.94)}
.app[data-state="lost"] .face{background:var(--accent);color:#fff}
.app[data-state="won"] .face{background:#2fd17a}

.board-scroll{width:100%;display:flex;overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;padding-bottom:4px}
.board{margin:0 auto;display:grid;grid-template-columns:repeat(var(--cols),var(--cell));gap:var(--gap);padding:6px;border-radius:12px;background:#c9c5bb;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:manipulation}
.c{width:var(--cell);height:var(--cell);padding:0;border:none;border-radius:max(3px,calc(var(--cell) * .16));display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:var(--cell-fs);font-weight:800;line-height:1;cursor:pointer;-webkit-tap-highlight-color:transparent;background:#fdfcf9;box-shadow:inset 0 -3px 0 rgba(0,0,0,.13);transition:background .12s}
.c:hover{background:#fff}
.c:active{box-shadow:none;background:#efede7}
.c.is-cursor{outline:2px solid var(--ink);outline-offset:-1px}
.c:focus-visible{outline:2px solid var(--ink);outline-offset:-1px}
.c.open{background:#e6e4dd;box-shadow:none;cursor:default;animation:reveal .18s ease-out backwards}
.c.open.n{cursor:pointer}
.c.flag{color:var(--accent)}
.c.flag svg{width:62%;height:62%;animation:plant .2s ease-out}
.c.mine{background:#e6e4dd;box-shadow:none}
.c.mine svg{width:62%;height:62%}
.c.boom{background:var(--accent);animation:boom .45s ease-out}
.c.boom svg{color:#fff}
.c.wrong{background:#e6e4dd;box-shadow:none;color:var(--ink-2);position:relative}
.c.wrong::after{content:"";position:absolute;inset:18%;background:linear-gradient(45deg,transparent 44%,var(--ink) 44%,var(--ink) 56%,transparent 56%),linear-gradient(-45deg,transparent 44%,var(--ink) 44%,var(--ink) 56%,transparent 56%)}
.n1{color:#2463eb}.n2{color:#11a050}.n3{color:#ff3b30}.n4{color:#2b2f8f}
.n5{color:#b0124d}.n6{color:#0f8a8a}.n7{color:#1c1c1a}.n8{color:#8a877f}
.app[data-state="won"] .board{background:#9fe3bd}
.app[data-state="lost"] .board{background:#f2b8b3}

.scroll-hint{margin:-4px 0 0;font-size:12px;color:var(--muted);font-family:var(--mono);letter-spacing:.04em}
.toolbar{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.flag-toggle{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--panel);font-size:13px;cursor:pointer}
.flag-toggle b{font-family:var(--mono);font-size:11px;color:var(--muted)}
.flag-toggle[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.flag-toggle[aria-pressed="true"] b{color:#fff}
.toolbar-hint{font-size:12px;color:var(--muted)}
.result{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px 16px;border-radius:14px;background:var(--panel);border:1px solid var(--line);animation:rise .3s ease-out}
.result strong{font-size:15px}
.result p{margin:2px 0 0;font-size:12px;color:var(--sub)}
.result .badge{display:inline-block;margin-left:6px;padding:2px 8px;border-radius:999px;background:var(--accent);color:#fff;font-size:11px;vertical-align:2px}

.bests{display:flex;flex-direction:column;gap:6px}
.best-row{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-radius:10px;background:var(--panel-soft);font-size:13px;color:var(--ink-2)}
.best-row b{font-family:var(--mono);font-size:18px;color:var(--ink);font-weight:500}
.best-row.is-current{box-shadow:inset 3px 0 0 var(--accent)}

@keyframes reveal{from{transform:scale(.85);opacity:.4}to{transform:none;opacity:1}}
@keyframes plant{from{transform:translateY(-30%) scale(.6);opacity:0}to{transform:none;opacity:1}}
@keyframes boom{0%{transform:scale(1.4)}100%{transform:scale(1)}}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (max-width:640px){
  :root{--gap:1px}
  .board{padding:4px;border-radius:10px}
  .level-seg .seg-btn{flex-direction:column;gap:0;height:44px;line-height:1.2}
  .level-seg{border-radius:16px}
  .level-seg .seg-btn{border-radius:13px}
  .lcd-num{font-size:22px}
}
@media (hover:none){ .c:hover{background:#fdfcf9} .c.open:hover{background:#e6e4dd} }

/* 다크 모드 (인쇄는 라이트 그대로) */
@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;
    --accent:#ff5a4f; --accent-soft:rgba(255,90,79,.16);
    --ms-cell:#3b3a45; --ms-cell-hover:#45444f; --ms-open:#1c1b22;
  }
  :root[data-theme="dark"] .btn--solid,
  :root[data-theme="dark"] .btn--accent{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"] .status{background:#0e0d11;box-shadow:inset 0 0 0 1px var(--line)}
  :root[data-theme="dark"] .board{background:#2a2932}
  :root[data-theme="dark"] .c{background:var(--ms-cell);color:var(--ink);box-shadow:inset 0 -3px 0 rgba(0,0,0,.3)}
  :root[data-theme="dark"] .c:hover{background:var(--ms-cell-hover)}
  :root[data-theme="dark"] .c:active{background:#302f39}
  :root[data-theme="dark"] .c.open,
  :root[data-theme="dark"] .c.mine,
  :root[data-theme="dark"] .c.wrong{background:var(--ms-open);box-shadow:none}
  :root[data-theme="dark"] .c.flag{color:var(--accent)}
  :root[data-theme="dark"] .c.boom{background:var(--accent)}
  :root[data-theme="dark"] .n1{color:#6c9bff}
  :root[data-theme="dark"] .n2{color:#3fd17f}
  :root[data-theme="dark"] .n3{color:#ff6b61}
  :root[data-theme="dark"] .n4{color:#a3a8ff}
  :root[data-theme="dark"] .n5{color:#ff6b9d}
  :root[data-theme="dark"] .n6{color:#3fd0d0}
  :root[data-theme="dark"] .n7{color:#ecebf0}
  :root[data-theme="dark"] .n8{color:#a09eab}
  :root[data-theme="dark"] .app[data-state="won"] .board{background:#1f5a3a}
  :root[data-theme="dark"] .app[data-state="lost"] .board{background:#5a2420}
  :root[data-theme="dark"] .flag-toggle[aria-pressed="true"],
  :root[data-theme="dark"] .flag-toggle[aria-pressed="true"] b,
  :root[data-theme="dark"] .result .badge{color:#fff}
  :root[data-theme="dark"] .flag-toggle[aria-pressed="true"]{background:#e0382d;border-color:#e0382d}
  :root[data-theme="dark"] .result .badge{background:#e0382d}
}
@media screen and (hover:none){
  :root[data-theme="dark"] .c:hover{background:var(--ms-cell)}
  :root[data-theme="dark"] .c.open:hover{background:var(--ms-open)}
}