:root{color-scheme:dark;--bg:#111112;--panel:#18181a;--panel-2:#232326;--panel-3:#303034;--border:#2a2a2d;--text:#ececec;--muted:#a1a1a6;--primary:#7aa2f7;--warning:#fcc419;--destructive:#ff6b6b;--blue:#7aa2f7;--shadow:0 16px 50px #00000033;--radius:18px}
*{box-sizing:border-box}
html{min-height:100%;background:var(--bg)}
body{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);margin:0;background:var(--bg);line-height:1.5}
button,a{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.45;cursor:not-allowed}
:focus-visible{outline:3px solid var(--primary);outline-offset:3px}
a{color:inherit;text-decoration:none}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.15;letter-spacing:-.035em}
#app{min-height:100vh}
.loading{padding:20vh 24px;text-align:center;color:var(--muted)}
.shell{max-width:1100px;margin:0 auto;padding:0 26px}
.site-header{border-bottom:1px solid var(--border);background:#111112}
.site-header .shell{display:flex;align-items:center;justify-content:space-between;min-height:74px;gap:15px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:850;letter-spacing:-.5px}
.brand-logo{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#242c40;color:var(--primary);font-size:21px;font-weight:900;font-family:ui-monospace,monospace;border:1px solid #43527d}
.brand-sub{font-weight:500;color:var(--muted)}
.nav-right{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--muted)}
.nav-right a:hover{color:var(--primary)}
.main{padding-top:40px;padding-bottom:68px}
.eyebrow{color:var(--primary);font-size:11px;letter-spacing:.19em;font-weight:850;text-transform:uppercase}
.hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(230px,.6fr);align-items:center;gap:30px;margin-bottom:34px;padding:26px 0 12px}
.hero h1{font-size:clamp(38px,5.6vw,65px);max-width:650px;margin:12px 0 15px;letter-spacing:-.055em}
.hero h1 span{color:var(--primary)}
.hero p{max-width:600px;color:var(--muted);font-size:16px;line-height:1.7}
.hero-card{background:linear-gradient(145deg,#25262c,#202023);border:1px solid #36363a;border-radius:22px;padding:22px;box-shadow:var(--shadow);transform:rotate(2deg)}
.hero-card .large-art{text-align:center;font-size:75px;line-height:1.8}
.hero-card .tiny{font-size:12px;color:#a1a1a6}
.hero-card strong{font-size:19px;display:block;margin:9px 0 5px}
.hero-card .bar{display:flex;gap:5px;margin-top:17px}
.hero-card .bar span{height:5px;flex:1;border-radius:10px;background:#647bb3}
.hero-card .bar span:nth-child(3){background:var(--warning)}
.filter-row{display:flex;justify-content:space-between;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:17px}
.section-title{margin:0;font-size:22px}
.filter-controls{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--border);border-radius:999px;background:#232326;color:#c9c9cc;padding:8px 13px;font-size:12px;font-weight:650}
.chip.active{background:#18233a;border-color:#7aa2f7;color:var(--primary)}
.games-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.game-card{position:relative;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:21px;min-height:255px;transition:transform .18s,border-color .18s,background .18s}
.game-card:hover{transform:translateY(-3px);border-color:#7aa2f7;background:#202023}
.game-card .top{display:flex;justify-content:space-between;align-items:start;gap:12px}
.game-emoji{display:grid;place-items:center;font-size:36px;background:#232326;width:67px;height:67px;border-radius:17px}
.tag{border:1px solid var(--border);border-radius:20px;padding:5px 9px;font-size:10px;font-weight:750;color:var(--muted);white-space:nowrap}
.game-card h3{margin:21px 0 6px;font-size:23px}
.game-card p{font-size:13px;color:var(--muted);line-height:1.62;flex:1}
.card-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;border-top:1px solid var(--border);padding-top:15px;font-size:11px;color:var(--muted)}
.card-footer b{color:var(--text);font-variant-numeric:tabular-nums}
.card-arrow{background:#18233a;color:var(--primary);border-radius:50%;width:29px;height:29px;display:grid;place-items:center;font-size:18px}
.note{border:1px solid var(--border);background:#18181a;border-radius:13px;padding:15px 18px;margin-top:25px;font-size:12px;color:var(--muted);line-height:1.65}
.note strong{color:var(--text)}
.footer{border-top:1px solid var(--border);color:var(--muted);font-size:12px;padding:23px 0 40px}
.footer .shell{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap}
.game-page{max-width:970px;margin:0 auto}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;margin-bottom:20px}
.back-link:hover{color:var(--primary)}
.game-top{display:flex;gap:18px;align-items:center;margin-bottom:23px}
.game-top .game-emoji{width:70px;height:70px;font-size:36px;flex-shrink:0}
.game-top h1{font-size:clamp(27px,4vw,40px);margin:2px 0 5px}
.game-top p{margin:0;color:var(--muted);font-size:13px}
.play-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(235px,.72fr);gap:17px;align-items:start}
.play-panel,.rules-panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px;min-width:0}
.score-bar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:14px}
.score-box{background:#111112;border-radius:11px;padding:12px 10px}
.score-box label{display:block;color:var(--muted);font-size:10px;letter-spacing:.07em;text-transform:uppercase;margin-bottom:3px}
.score-box strong{font-size:clamp(17px,3vw,25px);font-weight:850;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.score-box:first-child strong{color:var(--primary)}
.game-instruction{border:1px solid #36363a;border-radius:10px;padding:10px 12px;font-size:12px;color:#c3c3c7;background:#202024;line-height:1.55;margin-bottom:14px}
.board{max-width:510px;margin:0 auto;display:grid;gap:7px;user-select:none;touch-action:manipulation}
.board.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.board.five{grid-template-columns:repeat(5,minmax(0,1fr))}
.board.six{grid-template-columns:repeat(6,minmax(0,1fr))}
.board .cell{width:100%;min-width:0;aspect-ratio:1/1;border:1px solid #36363a;background:#232326;color:var(--text);border-radius:11px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:2px;font-size:clamp(21px,4vw,32px);transition:background .13s,transform .13s,border-color .13s;line-height:1.2}
.board .cell:not(:disabled):hover{background:#2a3550;border-color:#7aa2f7}
.board .cell.selected{background:#263a5b;border-color:var(--primary);box-shadow:inset 0 0 0 1px var(--primary)}
.board .cell.marked{background:#1d3828;border-color:#51cf66}
.board .cell.gold{background:#3a311c;border-color:#a98725}
.board .cell.danger{background:#3a2325;border-color:#a64949}
.board .cell.empty{background:#18181a;color:#77777c;border-style:dashed}
.board .cell .little{font-size:9px;letter-spacing:.05em;color:#a1a1a6;text-transform:uppercase;font-weight:800}
.board .cell:disabled{opacity:1}
.board .cell:disabled.empty{opacity:.55}
.board.memory .cell{aspect-ratio:4/4.6;font-size:clamp(25px,4.5vw,34px);background:linear-gradient(145deg,#303036,#242428)}
.board.memory .cell.revealed{background:#202b31;border-color:#5275bc}
.board.memory .cell.matched{background:#1d3828;border-color:var(--primary)}
.board.memory .cell .back-mark{font-family:ui-monospace,monospace;color:#a1a1a6;font-weight:800}
.board-column{max-width:510px;margin:0 auto 6px;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:7px}
.board-column button{background:#18233a;color:var(--primary);border:1px solid #4a66aa;border-radius:8px;padding:8px 0;font-size:16px}
.board-column button:disabled{opacity:.3}
.game-message{min-height:38px;display:grid;place-items:center;font-size:13px;color:var(--warning);text-align:center;margin-top:13px;line-height:1.45}
.game-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin-top:13px}
.btn{background:#232326;color:var(--text);border:1px solid #36363a;border-radius:11px;padding:10px 14px;font-size:13px;font-weight:750}
.btn:hover:not(:disabled){background:#303034}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#111112}
.btn.primary:hover:not(:disabled){background:#94b5f9}
.btn.warning{background:#392e1c;border-color:#a98725;color:#ffdf80}
.btn.ghost{background:#232326}
.rules-panel h2{font-size:17px;margin:0 0 14px}
.rule-list{padding-left:18px;color:#c4d2d0;font-size:13px;line-height:1.7;margin:0 0 20px}
.rule-list li{margin:0 0 9px}
.rules-panel .side-label{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;font-weight:750}
.rules-panel .best-number{font-size:33px;font-variant-numeric:tabular-nums;font-weight:850;color:var(--primary);margin:4px 0}
.side-divider{border:0;border-top:1px solid var(--border);margin:19px 0}
.stats-caption{font-size:12px;color:var(--muted);line-height:1.65}
.progress{display:flex;gap:5px;margin:12px 0}
.progress span{height:5px;border-radius:5px;flex:1;background:#303034}
.progress span.done{background:var(--primary)}
.status-pill{font-size:11px;color:var(--warning);font-weight:800;margin:8px 0}
.draw-card{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#202023;border:1px solid var(--border);border-radius:12px;padding:12px;margin-bottom:12px}
.draw-card .symbol{font-size:34px}
.draw-card strong{font-size:14px}
.draw-card .small{font-size:12px;color:var(--muted)}
.mini-keypad{display:grid;grid-template-columns:repeat(3,43px);justify-content:center;gap:6px;margin:14px auto 0}
.mini-keypad .btn{padding:9px 0}
.mini-keypad .up{grid-column:2}
.mini-keypad .left{grid-column:1}
.mini-keypad .down{grid-column:2}
.mini-keypad .right{grid-column:3}
.changelog{font-size:11px;color:var(--muted);text-align:center}
.finished{border:1px solid #3e7650;background:#182b1e;border-radius:10px;padding:15px;color:#bbf7c8;text-align:center;font-weight:750;margin-top:14px}
.loading{color:var(--muted)}
@media(max-width:860px){.games-list{grid-template-columns:repeat(2,minmax(0,1fr))}.play-layout{grid-template-columns:minmax(0,1fr) 260px}.hero{grid-template-columns:1fr 220px}}
@media(max-width:700px){.shell{padding-left:16px;padding-right:16px}.play-layout{grid-template-columns:1fr}.rules-panel{order:2}.hero{grid-template-columns:1fr;margin-top:0;gap:12px}.hero-card{display:none}.main{padding-top:25px}.play-panel,.rules-panel{padding:15px}.site-header .shell{min-height:62px}}
@media(max-width:510px){.games-list{grid-template-columns:1fr;gap:12px}.game-card{min-height:0;padding:18px}.game-card h3{margin:14px 0 5px}.game-card p{margin-bottom:16px}.hero h1{font-size:38px}.nav-right{gap:10px}.nav-right a:nth-child(1){display:none}.board{gap:5px}.board .cell{border-radius:8px;font-size:clamp(19px,6vw,28px)}.score-box{padding:9px 7px}.score-box label{font-size:9px}.game-top{gap:12px}.game-top .game-emoji{width:58px;height:58px}.game-actions .btn{flex:1}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}


/* The playground shares /dev/null's dark-mode tokens and visual rhythm.
   Reference: resources/css/app.css (.dark) in the main app. */
:root{
  --bg:#111112;
  --panel:#18181a;
  --panel-2:#232326;
  --panel-3:#303034;
  --border:#2a2a2d;
  --text:#ececec;
  --muted:#a1a1a6;
  --primary:#7aa2f7;
  --primary-soft:#18233a;
  --warning:#fcc419;
  --destructive:#ff6b6b;
  --radius:10px;
  color-scheme:dark
}
body{background:var(--bg);font-family:'Geist',ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-feature-settings:'ss01','cv11';color:var(--text)}
::selection{background:var(--primary-soft);color:var(--text)}
#app{display:grid;grid-template-columns:258px minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto;min-height:100dvh}
.site-header{grid-column:1;grid-row:1/3;position:sticky;top:0;height:100dvh;min-height:0;background:var(--bg);border:0;border-right:1px solid var(--border);overflow-y:auto;scrollbar-width:thin}
.site-header .shell{display:flex;flex-direction:column;justify-content:flex-start;align-items:stretch;max-width:none;min-height:100%;padding:34px 17px 25px;gap:42px}
.brand{display:flex;align-items:flex-start;justify-content:flex-start;gap:9px;padding:0 13px;white-space:nowrap;font-weight:750}
.brand-symbol{width:34px;height:37px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text)}
.brand-symbol svg{width:34px;height:34px}
.brand-copy{display:flex;flex-direction:column;align-items:flex-start;gap:3px}
.brand-wordmark{font-size:28px;letter-spacing:-1.7px;font-weight:850;line-height:1.15}
.brand-stroke{color:transparent;-webkit-text-stroke:1.15px #ff8a4c}
.brand-sub{color:var(--muted);font-size:12px;font-weight:450;letter-spacing:0}
.sidebar-content{display:flex;flex-direction:column;gap:27px}
.nav-right{display:flex;align-items:stretch;flex-direction:column;gap:4px;color:var(--muted)}
.nav-caption{font-size:10px;letter-spacing:.12em;color:#77777c;font-weight:700;margin:0 12px 8px;display:block}
.nav-link,.sidebar-game{border:1px solid transparent;border-radius:9px;padding:11px 13px;display:flex;align-items:center;gap:12px;min-height:42px;color:var(--muted);font-size:14px;font-weight:550;transition:background .15s,color .15s}
.nav-link:hover,.sidebar-game:hover{background:var(--panel-2);color:var(--text)}
.nav-link.active,.sidebar-game.active{color:var(--primary);background:var(--primary-soft);font-weight:700}
.sidebar-games{display:flex;flex-direction:column;gap:1px}
.sidebar-game span:first-child{font-size:20px;min-width:25px;text-align:center;line-height:1}
.sidebar-bottom{margin-top:auto;border-top:1px solid var(--border);padding:18px 13px 0;color:var(--muted);font-size:12px;line-height:1.8}
.sidebar-mark{color:#ff8a4c;margin-right:6px}
.main.shell{grid-column:2;grid-row:1;max-width:1170px;width:100%;min-width:0;margin:0 auto;padding:40px 36px 60px}
.footer{grid-column:2;grid-row:2;background:var(--bg);border-color:var(--border)}
.footer .shell{max-width:1170px}
.hero{gap:30px;margin-bottom:30px;padding:10px 0 20px}
.hero h1{font-size:clamp(35px,4.6vw,57px);letter-spacing:-.055em}
.hero h1 span{color:var(--primary)}
.hero p{font-size:15px;line-height:1.7;max-width:560px}
.hero-card{transform:none;background:var(--panel);border:1px solid var(--border);box-shadow:none;border-radius:12px}
.hero-card .large-art{line-height:1.5}
.hero-card .bar span{background:#343b4d}
.hero-card .bar span:nth-child(3){background:var(--primary)}
.eyebrow{color:var(--primary)}
.games-list{gap:13px}
.game-card{border-radius:12px;min-height:234px;background:var(--panel);border:1px solid var(--border);box-shadow:none;transition:background .15s,border-color .15s,transform .15s}
.game-card:hover{background:#1e1e21;border-color:#50505d;transform:translateY(-2px)}
.game-emoji{background:var(--panel-2);border-radius:10px}
.tag{background:var(--panel-2);border-color:var(--border);border-radius:6px;color:var(--muted)}
.chip{background:var(--panel);border:1px solid var(--border);color:var(--muted)}
.chip:hover{color:var(--text);background:var(--panel-2)}
.chip.active{background:var(--primary-soft);border-color:#344975;color:var(--primary)}
.card-arrow{background:var(--primary-soft);color:var(--primary)}
.note{background:var(--panel);border-color:var(--border);border-radius:10px}
.game-page{max-width:1000px}
.play-panel,.rules-panel{background:var(--panel);border:1px solid var(--border);border-radius:12px}
.score-box{background:#111112}
.score-box:first-child strong,.rules-panel .best-number{color:var(--primary)}
.game-instruction{background:var(--primary-soft);border-color:#303d5b;color:#b9cefa}
.board .cell{background:var(--panel-2);border:1px solid #36363a;border-radius:9px}
.board .cell:not(:disabled):hover{background:#2b2b31;border-color:#718dcb}
.board .cell.selected{background:#18233a;border:1px solid var(--primary);box-shadow:inset 0 0 0 1px var(--primary)}
.board .cell.marked{background:#183326;border-color:#51cf66}
.board .cell.gold{background:#39301d;border-color:#a98725}
.board .cell.danger{background:#392325;border-color:#a64949}
.board .cell.empty{background:var(--panel);color:#6e6e74;border:1px dashed #39393d}
.board .cell .little{color:var(--muted)}
.board.memory .cell{background:var(--panel-2);border-color:#36363a}
.board.memory .cell.revealed{background:#24304a;border-color:var(--primary)}
.board.memory .cell.matched{background:#1d3828;border-color:#51cf66}
.board-column button{background:var(--primary-soft);color:var(--primary);border-color:#334769}
.board-column button:hover:not(:disabled){background:#25375a}
.btn{background:var(--panel-2);border:1px solid #36363a;border-radius:8px}
.btn:hover:not(:disabled){background:var(--panel-3)}
.btn.primary{background:var(--primary);color:#111112;border-color:var(--primary)}
.btn.primary:hover:not(:disabled){background:#94b5f9}
.btn.warning{color:var(--warning);background:#342d1e;border-color:#5b4c31}
.btn.ghost{background:var(--panel-2)}
.draw-card{background:#202023;border-color:var(--border);border-radius:9px}
.progress span{background:#36363a}
.progress span.done{background:var(--primary)}
.finished{background:#1c2b23;border-color:#35543f;color:#b7f7c4}
.game-message{color:var(--warning)}
.back-link:hover{color:var(--primary)}
@media(max-width:1250px){
  #app{grid-template-columns:230px minmax(0,1fr)}
  .main.shell{padding:34px 25px 55px}
  .games-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:850px){
  #app{display:block;min-height:100dvh}
  .site-header{position:sticky;top:0;z-index:10;height:auto;min-height:0;overflow:visible;border-right:0;border-bottom:1px solid var(--border);background:#111112f5}
  .site-header .shell{flex-direction:row;align-items:center;justify-content:space-between;min-height:65px;max-width:1170px;margin:0 auto;padding:10px 20px;gap:15px}
  .brand{align-items:center;padding:0;gap:7px}
  .brand-symbol{width:26px;height:27px}
  .brand-symbol svg{width:25px;height:25px}
  .brand-wordmark{font-size:21px;letter-spacing:-.8px}
  .brand-sub{font-size:10px}
  .sidebar-content{gap:0}
  .sidebar-games,.sidebar-bottom,.nav-caption{display:none}
  .nav-right{flex-direction:row;align-items:center;gap:7px}
  .nav-link{padding:7px 10px;min-height:35px;font-size:12px}
  .main.shell{max-width:950px;padding:32px 20px 50px}
  .footer{border-top:1px solid var(--border)}
}
@media(max-width:510px){
  .site-header .shell{padding:9px 14px}
  .nav-right .nav-link:nth-of-type(2){display:none}
  .main.shell{padding:25px 15px 44px}
  .games-list{grid-template-columns:1fr}
  .game-card{min-height:0}
  .hero{padding:0 0 8px}
  .hero h1{font-size:36px}
  .board .cell{border-radius:7px}
  .footer .shell{padding-inline:15px}
}