:root{
  --paper:#f4f9fc; --grid:#d3e3ee; --grid-strong:#b6cddd;
  --card:#ffffff; --ink:#12263f; --muted:#556a82; --line:#c5d8e6;
  --blue:#1f4fd1; --blue-ink:#ffffff;
  --pen:#d23535; --hl:#ffe45c; --hl-soft:#fff2a8; --hl-ink:#12263f;
  --shadow:#12263f1f; --ok:#0b7a3e;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --paper:#0b2036; --grid:#173c5b; --grid-strong:#2a5880;
  --card:#10304c; --ink:#e8f2fb; --muted:#9bb9d1; --line:#2a5578;
  --blue:#8db8ff; --blue-ink:#07203a;
  --pen:#ff7b6c; --hl:#ffe45c; --hl-soft:#5a5a1f; --hl-ink:#fff6bd;
  --shadow:#0008; --ok:#5fe0a0;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{background:var(--paper)}
body{margin:0;color:var(--ink);font:16px/1.5 var(--sans);
  background-color:var(--paper);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:28px 28px;background-position:-1px -1px;min-height:100vh;min-height:100dvh;
  -webkit-text-size-adjust:100%}
.hidden{display:none!important}
.shell{max-width:1100px;margin:0 auto;padding:max(16px,env(safe-area-inset-top)) 18px max(20px,env(safe-area-inset-bottom))}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}

.top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:26px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}
.mark{width:34px;height:34px}
.brand-name{font:800 22px/1 var(--serif);letter-spacing:-.01em}
.top-actions{display:flex;align-items:center;gap:10px}
.chip{border:1.5px solid var(--ink);background:var(--card);border-radius:999px;padding:6px 14px;font-weight:600;font-size:14px;cursor:pointer;min-height:36px}
.conn{font-size:13px;font-weight:600;color:var(--pen)}

.card{background:var(--card);border:1.5px solid var(--ink);border-radius:12px;padding:clamp(16px,3vw,24px);box-shadow:5px 5px 0 var(--shadow)}
h1{font:800 clamp(34px,6vw,56px)/1.04 var(--serif);letter-spacing:-.025em;margin:0 0 18px}
h2{margin:0}
.h-sm{font:700 16px/1.2 var(--sans);margin:0 0 12px;display:flex;align-items:center;gap:8px}
.count{color:var(--muted);font-weight:600}
.muted{color:var(--muted)}
.small-label{font-size:13px;color:var(--muted);font-weight:600}
.lede{max-width:46ch;font-size:17px;color:var(--ink);margin:0 0 22px}

.lobby-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:start}
.hero{padding-top:8px}
.demo{display:flex;gap:8px;margin:0 0 22px}
.dl,.wl{display:grid;place-items:center;font:800 clamp(22px,4vw,30px)/1 var(--serif);width:clamp(40px,8vw,54px);aspect-ratio:1;border:2px dashed var(--grid-strong);border-radius:6px;color:color-mix(in srgb,var(--ink) 30%,transparent);background:transparent}
.dl.on,.wl.on{border:2px solid var(--ink);background:var(--ink);color:var(--paper);box-shadow:3px 3px 0 var(--pen)}
.how{max-width:46ch;color:var(--muted)}
.how summary{cursor:pointer;font-weight:600;color:var(--ink)}
.how ol{margin:10px 0 0;padding-left:20px}.how li{margin:4px 0}

label,legend{display:block;font-size:14px;font-weight:600;margin:0 0 6px}
input,select{width:100%;min-height:46px;padding:0 12px;border:1.5px solid var(--ink);border-radius:8px;background:var(--paper);color:var(--ink)}
input::placeholder{color:var(--muted);opacity:.8}
fieldset{border:0;margin:20px 0 0;padding:16px;border:1.5px dashed var(--grid-strong);border-radius:10px;min-width:0}
legend{padding:0 6px;margin-left:-6px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 18px;border:1.5px solid var(--ink);border-radius:8px;background:var(--card);font-weight:700;cursor:pointer;box-shadow:3px 3px 0 var(--shadow);transition:transform .08s,box-shadow .08s}
.btn:active:not(:disabled){transform:translate(2px,2px);box-shadow:1px 1px 0 var(--shadow)}
.btn.primary{background:var(--blue);color:var(--blue-ink);width:100%;margin-top:16px}
.btn.small{min-height:38px;padding:0 14px;font-size:14px}
.btn.ghost{background:transparent;box-shadow:none;border-color:var(--line);color:var(--muted)}
.btn.wide{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.or{display:flex;align-items:center;gap:12px;margin:22px 0 14px;color:var(--muted);font-size:14px}
.or:before,.or:after{content:"";flex:1;height:1px;background:var(--line)}
.joinrow{display:flex;gap:10px}
.joinrow input{text-transform:uppercase;letter-spacing:.18em;font-weight:700;font-size:18px}
.msg{min-height:22px;margin:12px 0 0;font-size:14px;color:var(--muted)}
.msg.error{color:var(--pen);font-weight:600}
.msg.center{text-align:center}
.resume{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;margin-bottom:18px;background:var(--hl-soft);color:var(--hl-ink);border:1.5px solid var(--ink);border-radius:10px}
.resume span{display:block;font-size:13px}

.wait{max-width:620px;margin:0 auto}
.wait-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:10px}
.roomcode{font:800 clamp(38px,9vw,60px)/1 var(--serif);letter-spacing:.12em;margin-top:2px}
.wait-foot{margin-top:18px;display:flex;flex-direction:column;gap:8px}
.wait-foot .btn.primary{margin-top:0}

.plist{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.pl{display:flex;align-items:center;gap:10px;padding:9px 11px;border:1.5px solid var(--line);border-radius:10px;min-width:0}
.pl.turn{border-color:var(--ink);background:var(--hl-soft);color:var(--hl-ink);box-shadow:3px 3px 0 var(--shadow)}
.pl.out{opacity:.55}
.av{flex:0 0 34px;height:34px;border-radius:8px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font:800 16px var(--serif)}
.pl-main{flex:1;min-width:0}
.pl-name{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pl-name em{font-style:normal;color:var(--muted);font-weight:600;font-size:13px}
.pl.turn .pl-name em{color:inherit;opacity:.8}
.pl-sub{font-size:13px;color:var(--muted)}
.pl.turn .pl-sub{color:inherit;opacity:.85}
.pips{display:flex;gap:2px;margin-top:5px}
.pips i{flex:1;height:5px;border-radius:2px;background:var(--grid-strong);max-width:22px}
.pips i.on{background:var(--ink)}
.pl.turn .pips i.on{background:var(--hl-ink)}
.tag{font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px;border:1.5px solid var(--line);color:var(--muted);white-space:nowrap}
.tag.win{border-color:var(--ok);color:var(--ok)}
.room-tag{margin-left:auto;font-size:13px;color:var(--muted);font-weight:600}

.game-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}
.word-wrap{margin-bottom:14px}
.word{display:flex;gap:clamp(4px,1.2vw,10px);flex-wrap:nowrap}
.word .wl{flex:1 1 0;width:auto;min-width:0;max-width:64px;font-size:clamp(14px,4.2vw,34px);border-width:2px}
.wl.stamp{animation:stamp .35s cubic-bezier(.2,1.6,.4,1)}
.word-sub{margin-top:8px;font-size:14px;color:var(--muted)}
.status{display:flex;justify-content:space-between;gap:12px;align-items:baseline;font-weight:700;font-size:18px;margin:6px 0 8px}
.status.mine{color:var(--ink)}
.timer{font-variant-numeric:tabular-nums;color:var(--muted);font-size:16px}
.bar{height:6px;border-radius:3px;background:var(--grid-strong);overflow:hidden;margin-bottom:14px}
.bar i{display:block;height:100%;width:0;background:var(--blue);transition:width .25s linear}
.bar.low i{background:var(--pen)}

.board{--n:5;display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));gap:clamp(3px,.9vw,7px);width:100%;max-width:560px;padding:clamp(6px,1.4vw,12px);background:var(--card);border:1.5px solid var(--ink);border-radius:12px;box-shadow:5px 5px 0 var(--shadow)}
.board.mine{box-shadow:0 0 0 4px var(--hl),5px 5px 0 var(--shadow)}
.tile{position:relative;display:grid;place-items:center;aspect-ratio:1;min-width:0;padding:0;border:1.5px solid var(--grid-strong);border-radius:clamp(4px,1vw,8px);background:var(--paper);font:700 clamp(11px,calc(26px - var(--n)*1.6px),22px)/1 var(--sans);font-variant-numeric:tabular-nums;color:var(--ink);cursor:default;overflow:hidden}
.board[data-n="9"] .tile,.board[data-n="10"] .tile{font-size:clamp(9px,2.6vw,15px)}
.board.mine .tile:not(.called){cursor:pointer;border-color:var(--ink)}
@media (hover:hover){.board.mine .tile:not(.called):hover{background:var(--hl-soft);color:var(--hl-ink)}}
.tile.line{background:var(--hl-soft);color:var(--hl-ink)}
.tile.called{color:var(--muted)}
.tile.called:before,.tile.called:after{content:"";position:absolute;left:6%;right:6%;top:50%;height:clamp(2px,.55vw,3.5px);margin-top:-1.5px;background:var(--pen);border-radius:3px}
.tile.called:before{transform:rotate(45deg)}.tile.called:after{transform:rotate(-45deg)}
.tile.latest{border-color:var(--pen);box-shadow:inset 0 0 0 2px var(--pen)}

.results{margin-top:18px}
.results h2{font:800 28px/1.1 var(--serif);margin-bottom:6px}
.results ol{list-style:none;margin:14px 0;padding:0;display:grid;gap:6px}
.results li{display:flex;gap:12px;align-items:center;padding:8px 10px;border:1.5px solid var(--line);border-radius:10px}
.results li.me{border-color:var(--ink);background:var(--hl-soft);color:var(--hl-ink)}
.results .pos{font:800 20px var(--serif);min-width:44px}
.results .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:700}
.results .ln{font-size:13px;color:var(--muted)}.results li.me .ln{color:inherit}
.results .btn{margin-top:6px}
.results .row{display:flex;gap:10px;flex-wrap:wrap}.results .row .btn{margin-top:0}

.side{display:grid;gap:18px}
.called{display:flex;flex-wrap:wrap;gap:6px}
.called span{min-width:34px;padding:4px 8px;text-align:center;border:1.5px solid var(--line);border-radius:6px;font-weight:700;font-variant-numeric:tabular-nums;font-size:14px}
.called span:first-child:not(.none){border-color:var(--pen);color:var(--pen)}
.called .none{border:0;color:var(--muted);font-weight:500;padding:0}

.foot{margin-top:32px;text-align:center;font-size:13px;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:max(20px,env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:999px;font-weight:700;box-shadow:0 6px 20px var(--shadow);z-index:20;max-width:calc(100% - 32px);text-align:center}
@keyframes stamp{0%{transform:scale(1.5) rotate(-6deg);opacity:.2}100%{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

@media (max-width:860px){
  .lobby-grid{grid-template-columns:minmax(0,1fr);gap:22px}
  .game-grid{grid-template-columns:minmax(0,1fr)}
  .side{grid-template-columns:1fr}
}
@media (max-width:420px){
  .shell{padding-left:12px;padding-right:12px}
  .grid3{grid-template-columns:1fr 1fr}.grid3>div:first-child{grid-column:1/-1}
  .card{box-shadow:3px 3px 0 var(--shadow)}
}

.last-call{min-height:22px;margin:0 0 10px}
.tile .num{position:relative;z-index:1;display:block;line-height:1;pointer-events:none}