:root{--bg:#0e1317;--panel:#151c22;--panel-2:#1b242b;--line:#28333c;--fg:#e7ecef;--muted:#8d9ba6;--accent:#ff8a3d;--ok:#4cc38a;--warn:#f2c230;--bad:#ff5a4d;
  --light:#eed8b4;--dark:#b07f55;--sea:#0f2b45;--sea-line:#21507a;color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--fg)}
body{font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;padding:0 max(16px,env(safe-area-inset-left)) 48px;-webkit-tap-highlight-color:transparent}
a{color:inherit}
h1,h2,h3{line-height:1.2}
.loading{color:var(--muted);text-align:center;margin-top:30vh}
.muted{color:var(--muted)}.small{font-size:14px}.warn{color:var(--warn)}
.top{display:flex;align-items:center;gap:12px;max-width:1100px;margin:0 auto;padding:14px 0}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;text-decoration:none;font-size:18px;letter-spacing:.02em}
.brand img{border-radius:6px}
.crumb{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumb::before{content:"/";margin-right:10px;opacity:.5}
.acct{margin-left:auto;display:flex;align-items:center;gap:10px;white-space:nowrap}
.who{font-weight:600}
.icon{background:none;border:0;font-size:18px;cursor:pointer;padding:4px;color:inherit}
.link{background:none;border:0;color:var(--muted);cursor:pointer;font:inherit;text-decoration:underline;padding:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:700;background:var(--accent);color:#14100c;border:1px solid var(--accent);border-radius:8px;padding:10px 18px;cursor:pointer;text-decoration:none;min-height:44px}
.btn:hover{filter:brightness(1.08)}
.btn:disabled{opacity:.55;cursor:default;filter:none}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--muted)}
.btn.danger{color:#ff9d94}
.btn.small{min-height:34px;padding:6px 12px;font-size:14px}
.btn.wide{width:100%;margin-top:12px}
.row{display:flex;gap:8px;align-items:center}.row.wrap{flex-wrap:wrap}
input{font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px 12px;min-height:44px;min-width:0;flex:1}
input:focus{outline:2px solid var(--accent);outline-offset:1px}
.field{display:grid;gap:6px;font-weight:600;font-size:14px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.panel h2{margin:0 0 6px;font-size:19px}
.panel p{margin:6px 0}
main{max-width:1100px;margin:0 auto}
.foot{text-align:center;color:var(--muted);font-size:14px}

/* home */
.home{max-width:820px;display:grid;gap:22px;padding-top:12px}
.hero h1{margin:0;font-size:40px;font-weight:800;text-transform:uppercase;letter-spacing:.02em}
.lede{color:var(--muted);margin:4px 0 0}
.cards{display:grid;gap:12px}
.card{display:grid;grid-template-columns:72px 1fr auto;gap:18px;align-items:center;padding:16px 18px;background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;text-decoration:none;transition:border-color .15s,transform .15s}
.card:hover,.card:focus-visible{border-color:var(--accent);transform:translateY(-1px);outline:none}
.card img{border-radius:14px;display:block}
.card h2{margin:0 0 2px;font-size:22px}
.card p{margin:0;color:var(--muted)}
.play{font-weight:700;background:var(--accent);color:#14100c;border-radius:8px;padding:10px 18px}
.list{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:6px}
.list li{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.list a{font-weight:700}
#joinf input{text-transform:uppercase;letter-spacing:.2em;font-weight:700;max-width:180px}

/* setup */
.setup{max-width:980px;display:grid;gap:18px;padding-top:8px}
.setup.narrow{max-width:520px;padding-top:8vh}
.setup .hero{display:flex;gap:16px;align-items:center}
.setup .hero img{border-radius:14px;flex:none}
.setup .hero h1{font-size:34px}
.modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;align-items:start}
.resume{display:flex;gap:14px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-color:var(--accent)}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{flex:1;font:inherit;font-weight:600;background:transparent;color:var(--muted);border:0;border-right:1px solid var(--line);padding:8px 6px;cursor:pointer;min-height:40px}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--panel-2);color:var(--fg);box-shadow:inset 0 -3px 0 var(--accent)}
#createf{display:grid;gap:4px;margin-top:10px}
.lb{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.lb th,.lb td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}
.lb th{color:var(--muted);font-weight:600;font-size:13px}
.join-card{text-align:center;display:grid;gap:12px;justify-items:center}
.join-card form{width:100%;display:grid;gap:4px;text-align:left}

/* game table */
.game{--bs:min(calc(100vw - 32px),calc(100svh - 190px),620px)}

.table{display:grid;grid-template-columns:auto minmax(240px,320px);gap:24px;justify-content:center;align-items:start}
.board-col{display:grid;gap:8px;width:var(--bs)}
.side-col{display:grid;gap:12px}
.status{margin:0;font-size:18px;font-weight:700}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.plate{display:flex;align-items:center;gap:10px;min-height:36px;padding:4px 10px;border-radius:8px;background:var(--panel);border:1px solid var(--line)}
.plate.turn{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.plate .nm{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.plate .caps{margin-left:auto;color:var(--muted);font-size:14px;white-space:nowrap;overflow:hidden}
.plate .caps .pc{font-size:16px;letter-spacing:-.15em}
.plate .sw{font-size:22px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--muted);flex:none}.dot.on{background:var(--ok)}
.invite,.offer{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.invite p,.offer p{margin:0 0 8px}
.invite input{font-size:14px}
.code{letter-spacing:.15em;color:var(--accent)}
.score{margin:0;color:var(--muted);font-weight:600}
.moves{list-style:none;margin:0;padding:10px 12px;max-height:280px;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:10px;display:grid;grid-template-columns:1fr;font-variant-numeric:tabular-nums;font-size:15px}
.moves li{display:grid;grid-template-columns:34px 1fr 1fr;gap:4px}
.moves .n{color:var(--muted)}

.board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);width:var(--bs);height:var(--bs);border-radius:6px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.45),0 0 0 6px #2a2017;user-select:none;-webkit-user-select:none;touch-action:manipulation}
.sq{position:relative;display:grid;place-items:center;cursor:default}
.sq.l{background:var(--light)}.sq.d{background:var(--dark)}
.sq.mv{cursor:pointer}
.sq.lm{background-image:linear-gradient(rgba(255,214,0,.36),rgba(255,214,0,.36))}
.sq.sel{background-image:linear-gradient(rgba(70,170,255,.5),rgba(70,170,255,.5))}
.sq.chk{background-image:radial-gradient(circle,rgba(255,40,30,.9) 0,rgba(255,40,30,.45) 45%,transparent 72%)}
.sq.t,.sq.tc{cursor:pointer}
.sq.t::after{content:"";position:absolute;width:30%;height:30%;border-radius:50%;background:rgba(25,40,25,.38);pointer-events:none}
.sq.tc::after{content:"";position:absolute;inset:5%;border-radius:50%;border:calc(var(--bs)/110) solid rgba(25,40,25,.4);pointer-events:none}
.co{position:absolute;font-size:calc(var(--bs)/48);font-weight:700;line-height:1;pointer-events:none;opacity:.8}
.co.rk{top:3px;left:4px}.co.fl{bottom:3px;right:4px}
.sq.l .co{color:var(--dark)}.sq.d .co{color:var(--light)}
.pc{font-family:"Segoe UI Symbol","Noto Sans Symbols 2","Noto Sans Symbols","DejaVu Sans","Apple Symbols",serif;line-height:1;pointer-events:none}
.board .pc{font-size:calc(var(--bs)/8*.8);transform:translateY(2%)}
.pc.w{color:#fbfbf8;-webkit-text-stroke:calc(var(--bs)/400 + .6px) #1d1d1d;paint-order:stroke fill;text-shadow:0 2px 3px rgba(0,0,0,.4)}
.pc.b{color:#1d1b19;-webkit-text-stroke:.6px #000;text-shadow:0 2px 2px rgba(0,0,0,.35)}
.plate .pc.w{-webkit-text-stroke:1px #1d1d1d}

/* checkers */
.board.checkers{box-shadow:0 10px 30px rgba(0,0,0,.45),0 0 0 6px #2a1414}
.board.checkers .sq.l{background:#e9d3b0}.board.checkers .sq.d{background:#5a3a26}
.board.checkers .sq.t::after{background:rgba(255,230,140,.55)}
.ck{width:78%;height:78%;border-radius:50%;position:relative;pointer-events:none;box-shadow:0 calc(var(--bs)/120) 0 rgba(0,0,0,.55),0 4px 8px rgba(0,0,0,.4)}
.ck.r{background:radial-gradient(circle at 50% 42%,#e2493d 0 52%,#b8291f 53% 60%,#d53b30 61%);}
.ck.b{background:radial-gradient(circle at 50% 42%,#3a3a3a 0 52%,#151515 53% 60%,#2b2b2b 61%)}
.ck.king::after{content:"♛";position:absolute;inset:0;display:grid;place-items:center;font-size:calc(var(--bs)/16);color:#ffd36b;text-shadow:0 1px 1px rgba(0,0,0,.6)}
.plate .ck{width:22px;height:22px;box-shadow:none;flex:none}
.sq.mv .ck{box-shadow:0 0 0 3px rgba(255,214,0,.7),0 calc(var(--bs)/120) 0 rgba(0,0,0,.55)}

.overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);display:grid;place-items:center;z-index:20}
.promo{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}
.promo p{width:100%;margin:0 0 4px;text-align:center;font-weight:700}
.promo button{width:64px;height:64px;border-radius:10px;border:1px solid var(--line);background:var(--light);cursor:pointer;font-size:46px;display:grid;place-items:center}

/* battleship */
.table.bsx{grid-template-columns:1fr;max-width:1000px;margin:0 auto;gap:14px}
.bs{display:grid;grid-template-columns:auto auto;gap:28px;justify-content:center;align-items:start}
.bs-col{display:grid;gap:8px;justify-items:start}
.bs-col h3{margin:0;font-size:16px;color:var(--muted)}
.bs-side{display:grid;gap:10px;max-width:340px}
.bs-wrap{--gs:min(calc(100vw - 56px),460px);display:grid;grid-template-columns:20px var(--gs);grid-template-rows:18px var(--gs);gap:4px}
.bs-wrap.small{--gs:min(calc(100vw - 56px),300px)}
.bs-cols{grid-column:2;display:grid;grid-template-columns:repeat(10,1fr);text-align:center}
.bs-rows{grid-row:2;display:grid;grid-template-rows:repeat(10,1fr);align-items:center;text-align:right}
.bs-cols span,.bs-rows span{font-size:11px;color:var(--muted);font-weight:700}
.bs-grid{grid-row:2;grid-column:2;display:grid;grid-template-columns:repeat(10,1fr);grid-template-rows:repeat(10,1fr);background:var(--sea);border:1px solid var(--sea-line);border-radius:6px;overflow:hidden;user-select:none;-webkit-user-select:none;touch-action:manipulation}
.bs-grid .c{position:relative;border-right:1px solid var(--sea-line);border-bottom:1px solid var(--sea-line)}
.bs-grid .c:nth-child(10n){border-right:0}
.bs-grid .c:nth-child(n+91){border-bottom:0}
.bs-grid.live .c{cursor:pointer}
.bs-grid .c.aim:hover{background:rgba(255,138,61,.25)}
.c.ship::before{content:"";position:absolute;inset:12% 0;background:#9fb3c4;box-shadow:inset 0 -3px 0 rgba(0,0,0,.25)}
.c.ship.v::before{inset:0 12%}
.c.ship.et::before{inset:12% 12% 0;border-radius:50% 50% 0 0}
.c.ship.eb::before{inset:0 12% 12%;border-radius:0 0 30% 30%}
.c.ship.el::before{inset:12% 0 12% 12%;border-radius:50% 0 0 50%}
.c.ship.er::before{inset:12% 12% 12% 0;border-radius:0 30% 30% 0}
.c.ship.pick::before{background:#ffb27a}
.c.ship.sunk::before{background:#6b2b26}
.c.miss::after{content:"";position:absolute;left:50%;top:50%;width:22%;height:22%;margin:-11% 0 0 -11%;border-radius:50%;background:rgba(220,235,255,.75)}
.c.hit::after{content:"✕";position:absolute;inset:0;display:grid;place-items:center;color:var(--bad);font-weight:900;font-size:calc(var(--gs)/14);text-shadow:0 0 6px rgba(255,90,77,.7)}
.c.sunk.hit::after{color:#ffb3ab}
.c.recent{box-shadow:inset 0 0 0 2px var(--warn)}
.fleet{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.fleet.chips li{font-size:13px;border:1px solid var(--line);border-radius:999px;padding:2px 10px;color:var(--fg)}
.fleet.chips li.down{text-decoration:line-through;color:var(--muted);border-color:transparent;background:rgba(255,90,77,.12)}
.pips{letter-spacing:-.1em;font-size:10px;color:var(--muted);margin-left:4px}
.fleet.pickable{display:grid;gap:6px}
.fleet.pickable button{width:100%;text-align:left;font:inherit;font-weight:600;background:var(--panel-2);color:var(--fg);border:1px solid var(--line);border-radius:8px;padding:8px 12px;cursor:pointer;display:flex;justify-content:space-between}
.fleet.pickable button.placed{color:var(--muted)}
.fleet.pickable button.placed::after{content:"✓";color:var(--ok)}
.fleet.pickable button[aria-pressed="true"]{border-color:var(--accent);color:var(--fg);box-shadow:0 0 0 1px var(--accent)}
.bsx .status{text-align:center}
.bsx .actions{justify-content:center}
.bsx .invite,.bsx .offer,.bsx .score{max-width:560px;margin:0 auto;width:100%}
.bsx .score{text-align:center}

#toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--panel-2);border:1px solid var(--line);color:var(--fg);padding:10px 16px;border-radius:10px;opacity:0;pointer-events:none;transition:.2s;z-index:30;max-width:calc(100vw - 32px)}
#toast.on{opacity:1;transform:translate(-50%,0)}

@media (max-width:900px){
  .table{grid-template-columns:1fr;justify-items:center;gap:14px}
  .side-col{width:var(--bs)}
  .bs{grid-template-columns:1fr;justify-items:center}
  .bs-side{max-width:none;width:100%}
  .game{--bs:min(calc(100vw - 32px),calc(100svh - 170px),620px)}
}
@media (max-width:560px){
  .card{grid-template-columns:56px 1fr}.card img{width:56px;height:56px}.play.card,.card .play{grid-column:1/-1;text-align:center}
  .hero h1{font-size:32px}
  .top{gap:8px}.who{display:none}
  .game{--bs:calc(100vw - 32px)}
}