:root{
  --ink:#262421; --ink-2:#312e2b; --ink-3:#3d3a37; --line:#45423e;
  --text:#f2f1ef; --muted:#b6b3ae; --muted-2:#8b8883;
  --brass:#81b64c; --brass-2:#a3d160; --good:#81b64c; --live:#e0403f;
  --board-light:#e9edcc; --board-dark:#4f7396;
  --shadow:0 18px 50px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:radial-gradient(1200px 800px at 70% -10%,#1c2030,#0f1117 60%);color:var(--text);
  font-family:"Montserrat",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100dvh}
h1,h2,h3{font-family:"Montserrat",sans-serif}
.hidden{display:none!important}
button{font-family:inherit;cursor:pointer;border:none;color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:18px 20px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:6px 0 18px}
.brand{display:flex;align-items:center;gap:10px;cursor:pointer}
.brand .k{font-size:26px;color:var(--brass)}
.brand h1{font-size:22px;letter-spacing:.04em}
.brand .tag{font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted-2)}
.right{display:flex;align-items:center;gap:12px}
.online{display:flex;align-items:center;gap:8px;background:var(--ink-2);border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:13px;color:var(--muted)}
.online b{color:var(--text)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--good);box-shadow:0 0 8px var(--good)}
.chip{display:flex;align-items:center;gap:9px;background:var(--ink-2);border:1px solid var(--line);border-radius:12px;padding:7px 11px}
.chip .av{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--brass),#9c7a2f);color:#1c1606;display:grid;place-items:center;font-weight:800}
.chip .nm{font-size:13px;font-weight:600}.chip .sub{font-size:10px;color:var(--muted-2);text-transform:uppercase;letter-spacing:.12em}
.link{font-size:12px;color:var(--muted-2);cursor:pointer}.link:hover{color:var(--live)}

/* auth */
.auth{min-height:90dvh;display:grid;place-items:center}
.card{background:var(--ink-2);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.auth .card{width:100%;max-width:400px;text-align:center}
.auth .k{font-size:42px;color:var(--brass)}
.auth h1{font-size:34px;letter-spacing:.04em;margin-top:4px}
.auth .tag{font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--muted-2)}
.auth p{color:var(--muted);font-size:14px;margin:14px 0 22px;line-height:1.5}
.prov{display:flex;align-items:center;gap:12px;width:100%;background:var(--ink-3);border:1px solid var(--line);border-radius:12px;padding:13px 15px;font-size:15px;font-weight:600;margin-bottom:10px}
.prov:hover{border-color:#3d4456}
.prov .pic{width:26px;height:26px;border-radius:6px;display:grid;place-items:center;font-weight:800}
.prov.google .pic{background:#fff;color:#000}.prov.discord .pic{background:#5865F2;color:#fff}.prov.guest .pic{background:var(--ink-2);color:var(--brass-2)}.prov.acct .pic{background:linear-gradient(135deg,var(--brass),#9c7a2f);color:#1c1606}
.divider{display:flex;align-items:center;gap:10px;color:var(--muted-2);font-size:11px;margin:16px 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.form{display:flex;flex-direction:column;gap:9px;text-align:left;margin-top:8px}
input,select{background:var(--ink-3);border:1px solid var(--line);border-radius:10px;padding:11px 13px;color:var(--text);font-size:14px;font-family:inherit;width:100%}
input:focus,select:focus{outline:none;border-color:var(--brass)}
.btn{background:var(--brass);color:#1c1606;font-weight:700;border-radius:10px;padding:12px;font-size:14px}
.btn:hover{background:var(--brass-2)}
.btn.ghost{background:var(--ink-3);border:1px solid var(--line);color:var(--text)}
.btn.ghost:hover{border-color:#3d4456}
.err{color:var(--live);font-size:12px;min-height:14px}
.muted{color:var(--muted);font-size:13px}
.tabs{display:flex;gap:6px;margin-bottom:8px}
.tabs span{font-size:12px;color:var(--muted);cursor:pointer;padding:4px 8px;border-radius:7px}
.tabs span.on{color:var(--brass-2);background:rgba(200,162,74,.12)}

/* lobby */
.grid2{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
@media(max-width:860px){.grid2{grid-template-columns:1fr}}
.field{margin-bottom:12px}.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.row{display:flex;gap:8px}.row>*{flex:1}
.invite-link{display:flex;gap:8px;margin-top:10px}
.invite-link input{font-size:12px}
.lb{max-height:520px;overflow:auto}
.lb .r{display:grid;grid-template-columns:40px 1fr auto;gap:10px;align-items:center;padding:9px 6px;border-bottom:1px solid var(--line);font-size:14px}
.lb .r.you{background:rgba(200,162,74,.12);border-radius:8px}
.lb .r .rk{color:var(--muted);font-weight:700;text-align:center}
.lb .r .el{color:var(--brass-2);font-weight:700}

/* game */
.game{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
@media(max-width:900px){.game{grid-template-columns:1fr}}
.pstrip{display:flex;align-items:center;justify-content:space-between;background:var(--ink-2);border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:6px 0}
.pstrip .who{display:flex;align-items:center;gap:9px;font-weight:600}
.clock{font-variant-numeric:tabular-nums;font-weight:700;font-size:18px;background:var(--ink-3);border:1px solid var(--line);border-radius:8px;padding:5px 11px}
.clock.active{border-color:var(--brass);color:var(--brass-2)}
.board-frame{background:linear-gradient(160deg,#2a2417,#171511);padding:12px;border-radius:14px;box-shadow:var(--shadow)}
.board{width:100%;aspect-ratio:1;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);border-radius:7px;overflow:hidden}
.sq{position:relative;display:grid;place-items:center;font-size:min(8vw,52px);line-height:1;user-select:none;cursor:pointer}
.sq.l{background:var(--board-light)}.sq.d{background:var(--board-dark)}
.sq .pc{filter:drop-shadow(0 2px 2px rgba(0,0,0,.35))}
.sq.sel::after{content:"";position:absolute;inset:0;background:rgba(200,162,74,.4)}
.sq.tgt::before{content:"";position:absolute;width:30%;height:30%;border-radius:50%;background:rgba(20,20,20,.35)}
.sq.tgt.cap::before{width:86%;height:86%;border-radius:50%;background:none;border:4px solid rgba(20,20,20,.35)}
.sq.last::after{content:"";position:absolute;inset:0;background:rgba(200,162,74,.16)}
.side .card{margin-bottom:14px;padding:14px}
.videos{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.vtile{position:relative;aspect-ratio:4/3;background:#0c0e14;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:grid;place-items:center}
.vtile video{width:100%;height:100%;object-fit:cover}
.vtile .ph{color:var(--muted-2);font-size:11px;text-align:center}
.vtile .lbl{position:absolute;bottom:5px;left:6px;font-size:10px;background:rgba(0,0,0,.5);padding:2px 6px;border-radius:5px}
.av-controls{display:flex;gap:8px;margin-top:8px}
.av-controls button{flex:1;background:var(--ink-3);border:1px solid var(--line);border-radius:9px;padding:9px;font-size:12px}
.av-controls button.on{border-color:var(--good);color:var(--good)}
.chat{display:flex;flex-direction:column;height:260px}
.chat .msgs{flex:1;overflow:auto;display:flex;flex-direction:column;gap:6px;padding-right:4px}
.msg{max-width:85%;padding:7px 10px;border-radius:10px;font-size:13px;line-height:1.35}
.msg.me{align-self:flex-end;background:var(--brass);color:#1c1606}
.msg.them{align-self:flex-start;background:var(--ink-3);border:1px solid var(--line)}
.msg.sys{align-self:center;color:var(--muted-2);font-size:11px}
.chat .in{display:flex;gap:6px;margin-top:8px}.chat .in input{flex:1}.chat .in button{background:var(--brass);color:#1c1606;border-radius:9px;padding:0 14px;font-weight:700}
.actions{display:flex;gap:8px}.actions button{flex:1;background:var(--ink-3);border:1px solid var(--line);border-radius:9px;padding:10px;font-size:13px}
.actions button.danger:hover{border-color:var(--live);color:var(--live)}
.result{background:linear-gradient(160deg,var(--ink-3),var(--ink-2));border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:10px}
.result h3{font-size:20px}.result .reason{color:var(--muted);font-size:13px;margin-top:2px}
.result .elo{margin-top:6px;font-weight:700}.result .up{color:var(--good)}.result .down{color:var(--live)}
.result .ra{display:flex;gap:8px;margin-top:12px}.result .ra button{flex:1;border-radius:9px;padding:10px;font-weight:600}
.result .ra .primary{background:var(--brass);color:#1c1606}.result .ra .ghost{background:var(--ink-2);border:1px solid var(--line)}
.note{font-size:11px;color:var(--muted-2);margin-top:8px;text-align:center}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink-3);border:1px solid var(--line);border-radius:10px;padding:11px 16px;font-size:13px;opacity:0;transition:.25s;pointer-events:none}
.toast.show{opacity:1}
.searching{text-align:center;padding:30px}
.spinner{width:46px;height:46px;border:3px solid var(--line);border-top-color:var(--brass);border-radius:50%;margin:0 auto 16px;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* --- realtime client additions --- */
.sq .pc{width:92%;height:92%;display:flex;align-items:center;justify-content:center}
.sq .pc svg{width:100%;height:100%;display:block;filter:drop-shadow(0 1.5px 1.2px rgba(0,0,0,.3))}
.clock.low{color:var(--live)}
.clock.active.low{color:#d0342c}
.btn,.result .ra .primary,.chat .in button{box-shadow:0 3px 0 #5c8a34}
.btn:active{transform:translateY(2px);box-shadow:0 1px 0 #5c8a34}

/* --- 2B: premove + right-click annotations --- */
#board{position:relative}
.sq .premk{position:absolute;inset:0;z-index:1;background:rgba(224,64,63,.42);pointer-events:none}
.sq .premk-n{position:absolute;top:3px;right:3px;z-index:4;width:16px;height:16px;border-radius:50%;
  background:#e0403f;color:#fff;font-size:10px;font-weight:800;display:grid;place-items:center;
  font-style:normal;pointer-events:none;box-shadow:0 1px 4px rgba(0,0,0,.45)}
.sq .mk{position:absolute;inset:0;z-index:1;pointer-events:none}
.sq .mk.red{background:rgba(235,64,52,.52)}
.sq .mk.green{background:rgba(129,182,76,.52)}
.sq .mk.blue{background:rgba(74,144,217,.52)}
.sq .mk.yellow{background:rgba(242,195,49,.55)}
.sq .pc{position:relative;z-index:2}
#arrowLayer{position:absolute;inset:0;width:100%;height:100%;z-index:7;pointer-events:none}

/* --- 2A: Stockfish analysis modal --- */
#anModal{position:fixed;inset:0;background:rgba(0,0,0,.72);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
#anModal.show{display:flex}
#anModal .an-box{background:var(--ink-2);border:1px solid var(--line);border-radius:14px;width:min(920px,96vw);max-height:92vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 24px 60px rgba(0,0,0,.6)}
.an-head{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line)}
.an-head b{font-family:"Montserrat",sans-serif;font-size:17px}
.an-head #anEngine{font-size:11px;color:var(--muted-2);text-transform:uppercase;letter-spacing:.14em}
.an-head #anClose{margin-left:auto;background:var(--ink-3);border:1px solid var(--line);border-radius:8px;width:30px;height:30px;color:var(--muted);cursor:pointer}
.an-head #anClose:hover{color:var(--text);border-color:#57544f}
.an-body{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px;padding:16px;overflow:auto}
.an-left{display:flex;flex-direction:column;gap:10px}
.an-board{width:100%;max-width:440px;aspect-ratio:1;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);border-radius:8px;overflow:hidden;margin:0 auto}
.an-board .sq{position:relative;display:grid;place-items:center}
.an-board .sq.l{background:var(--board-light)}.an-board .sq.d{background:var(--board-dark)}
.an-board .sq.last{box-shadow:inset 0 0 0 4px rgba(242,195,49,.75)}
.an-board .pc{width:92%;height:92%}.an-board .pc svg{width:100%;height:100%;display:block;filter:drop-shadow(0 1.5px 1.2px rgba(0,0,0,.3))}
.an-nav{display:flex;align-items:center;justify-content:center;gap:8px}
.an-nav button{background:var(--ink-3);border:1px solid var(--line);border-radius:8px;padding:6px 12px;color:var(--text);cursor:pointer;font-size:15px}
.an-nav button:hover{border-color:#57544f}
.an-nav #anPly{font-variant-numeric:tabular-nums;color:var(--muted);font-size:13px;min-width:60px;text-align:center}
.an-status{font-size:12.5px;color:var(--muted);margin-bottom:4px}
.an-eval{font-size:13.5px;background:var(--ink-3);border:1px solid var(--line);border-radius:9px;padding:10px 12px;min-height:42px}
.an-eval .ev{font-weight:800;margin-right:6px}
.an-moves{display:flex;flex-direction:column;gap:2px;overflow:auto;max-height:46vh}
.an-moves .mv{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:6px;cursor:pointer;font-size:13px}
.an-moves .mv:hover{background:var(--ink-3)}
.an-moves .mv.cur{background:rgba(129,182,76,.16);box-shadow:inset 0 0 0 1px var(--brass)}
.an-moves .mv .n{color:var(--muted-2);min-width:26px;font-variant-numeric:tabular-nums}
.an-moves .mv .s{font-weight:700;min-width:52px}
.an-moves .mv .tag,.an-eval .ev{font-size:11px;padding:1px 7px;border-radius:20px;font-weight:800}
.tag.best,.ev.best{background:rgba(129,182,76,.2);color:#a3d160}
.tag.good,.ev.good{background:rgba(74,144,217,.2);color:#7fb2e6}
.tag.inaccuracy,.ev.inaccuracy{background:rgba(242,195,49,.2);color:#f2c331}
.tag.mistake,.ev.mistake{background:rgba(230,140,40,.22);color:#eaa04f}
.tag.blunder,.ev.blunder{background:rgba(224,64,63,.22);color:#f08a86}
@media (max-width:720px){ .an-body{grid-template-columns:1fr} .an-moves{max-height:30vh} }


/* --- 2A+: qualitative analysis (eval bar, accuracy, best-move arrow) --- */
.an-boardwrap{display:flex;gap:10px;align-items:stretch;justify-content:center}
.an-bar{position:relative;width:26px;flex:none;background:#262421;border:1px solid var(--line);border-radius:6px;overflow:hidden;align-self:stretch;min-height:280px}
.an-bar-w{position:absolute;left:0;right:0;bottom:0;height:50%;background:linear-gradient(180deg,#f4f3f0,#d9d7d1);transition:height .25s ease}
.an-bar-txt{position:absolute;left:0;right:0;text-align:center;font-size:10px;font-weight:800;font-variant-numeric:tabular-nums;z-index:2}
.an-board{position:relative;flex:1;max-width:440px}
#anArrow{position:absolute;inset:0;width:100%;height:100%;z-index:6;pointer-events:none}
.an-acc{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.acc-card{background:var(--ink-3);border:1px solid var(--line);border-radius:10px;padding:9px 6px;text-align:center}
.acc-card.me{border-color:var(--brass);background:rgba(129,182,76,.10)}
.acc-card .lbl{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.acc-card .pct{font-family:"Montserrat",sans-serif;font-weight:800;font-size:24px;line-height:1.1}
.acc-card.me .pct{color:var(--brass-2)}
.acc-card .sub{font-size:10px;color:var(--muted-2)}
.an-eval .bestmv{color:#7fb2e6}

/* --- drag & drop + interaction polish --- */
#board .sq{touch-action:none}                 /* let pointer events drive dragging on touch */
#board .sq.dragging .pc{opacity:0}            /* hide origin piece while dragging its ghost */
#board .sq.hover{box-shadow:inset 0 0 0 3px rgba(255,255,255,.55)}
.pc.drag-ghost{position:fixed;z-index:60;pointer-events:none;margin:0;transform:translate(0,0);
  filter:drop-shadow(0 6px 6px rgba(0,0,0,.5));will-change:left,top}
.pc.drag-ghost svg{width:100%;height:100%;display:block}
#board .pc{transition:none}                    /* snappy: no lag on the piece being moved */
#btnSound.on{color:var(--brass-2)}