/* iND Chessology — site styles (royal purple + wood) */
:root{--wood:#4a2d7a;--edge:#2e1a4f;--purp:#8a66c4;--mid:#7b5cb8;--soft:#efe9f8;--bg:#f7f4fc;--gold:#d4af37;--ink:#1a1a1a;--muted:#6b6280;--line:#ddd3ee;--ok:#2e7d32;--bad:#c62828;
  --bs:max(300px, min(760px, calc(100vh - 290px), calc(100vw - 470px)));}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:15px;line-height:1.5;-webkit-tap-highlight-color:transparent;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:var(--mid)}
h1,h2,h3,.serif{font-family:Cinzel,Georgia,"Times New Roman",serif;color:var(--wood);line-height:1.2}
h1{font-size:30px;margin:0 0 12px}h2{font-size:22px;margin:0 0 10px}h3{font-size:17px;margin:0 0 8px}
.wood{background-color:var(--wood);background-image:repeating-linear-gradient(90deg,rgba(0,0,0,.10) 0 2px,transparent 2px 9px),repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 23px);color:#fff}
.muted{color:var(--muted)}.small{font-size:13px}.center{text-align:center}.right{text-align:right}
.hide{display:none!important}

/* ---------- header ---------- */
.nav{display:flex;align-items:center;gap:18px;padding:10px 22px;border-bottom:3px solid var(--edge);position:relative;z-index:30}
.brand{font-family:Cinzel,Georgia,serif;font-size:22px;color:#fff;text-decoration:none;margin-right:auto;white-space:nowrap}
.brand b{color:var(--gold)}
.links{display:flex;gap:20px}
.links a{color:#fff;text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.links a.on{color:var(--gold);border-color:var(--gold)}
.links a:hover{color:var(--gold)}
.coins{background:rgba(212,175,55,.18);border:1px solid var(--gold);color:var(--gold);border-radius:20px;padding:4px 13px;font-weight:700;font-size:14px;text-decoration:none;white-space:nowrap}
.me{position:relative}
.me summary{list-style:none;cursor:pointer}.me summary::-webkit-details-marker{display:none}
.ava{width:36px;height:36px;border-radius:50%;background:var(--gold);color:var(--edge);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.me .menu{position:absolute;right:0;top:46px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 34px rgba(46,26,79,.22);min-width:220px;overflow:hidden}
.me .menu a{display:block;padding:10px 16px;color:var(--ink);text-decoration:none}.me .menu a:hover{background:var(--soft)}
.me .mh{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;flex-direction:column}.me .mh b{color:var(--wood)}.me .mh span{font-size:12px;color:var(--muted)}
.guest{background:#fbf3d6;border-bottom:1px solid #eadca5;color:#5a4a12;font-size:14px;padding:8px 22px;display:flex;gap:4px 8px;align-items:center;flex-wrap:wrap}
.guest a{font-weight:700;color:var(--wood)}

/* ---------- buttons & forms ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:8px;padding:10px 16px;font-weight:700;font-size:14px;border:1.5px solid var(--mid);color:var(--mid);background:#fff;cursor:pointer;text-decoration:none;user-select:none;font-family:inherit;line-height:1.2}
.btn:hover{background:var(--soft)}
.btn.p{background:var(--mid);color:#fff}.btn.p:hover{background:var(--wood);border-color:var(--wood)}
.btn.g{background:var(--gold);border-color:var(--gold);color:var(--edge)}.btn.g:hover{background:#e6c34f}
.btn.d{border-color:var(--bad);color:var(--bad)}.btn.d:hover{background:#fdecec}
.btn.w{width:100%}.btn.sm{padding:7px 12px;font-size:13px}.btn.lg{padding:14px 26px;font-size:17px}
.btn:disabled,.btn.dis{opacity:.45;cursor:not-allowed}
label{display:block;font-size:13px;font-weight:700;color:var(--wood);margin:10px 0 5px}
.in,input[type=text],input[type=email],input[type=number],input[type=tel],select,textarea{width:100%;border:1.5px solid var(--line);border-radius:8px;padding:11px 13px;font-size:16px;font-family:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--purp);box-shadow:0 0 0 4px rgba(138,102,196,.18)}
.err{background:#fdecec;color:var(--bad);border:1px solid #f5c2c2;border-radius:8px;padding:10px 12px;font-size:14px;margin:10px 0}
.ok{background:#e9f5ea;color:var(--ok);border:1px solid #bfe0c1;border-radius:8px;padding:10px 12px;font-size:14px;margin:10px 0}
.pill{display:inline-block;background:var(--soft);color:var(--wood);border-radius:20px;padding:3px 11px;font-size:12px;font-weight:700}
.pill.ok{background:#e9f5ea;color:var(--ok);border:0;margin:0;padding:3px 11px}.pill.bad{background:#fdecec;color:var(--bad)}.pill.gold{background:#fbf3d6;color:#8a6d12}

/* ---------- cards / tables ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.ch{background:var(--soft);color:var(--wood);padding:10px 16px;font-family:Cinzel,Georgia,serif;font-weight:700;font-size:16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}
.cb{padding:16px}
.wrap{max-width:1200px;margin:0 auto;padding:22px 18px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{background:var(--wood);color:#fff;text-align:left;padding:9px 12px;font-weight:600;white-space:nowrap}
table.t td{padding:8px 12px;border-bottom:1px solid #f0ebf8;vertical-align:middle}
table.t tr:nth-child(even) td{background:#faf8fd}
.tw{overflow-x:auto}
.stat{background:var(--soft);border-radius:10px;padding:14px}
.stat b{display:block;font-family:Cinzel,Georgia,serif;font-size:26px;color:var(--wood);line-height:1.1}
.stat span{font-size:12px;color:var(--muted)}
.seg{display:flex;border:1.5px solid var(--mid);border-radius:8px;overflow:hidden;margin-bottom:12px}
.seg button,.seg a{flex:1;border:0;background:#fff;color:var(--mid);font-weight:700;font-size:14px;padding:9px 4px;cursor:pointer;font-family:inherit;text-align:center;text-decoration:none}
.seg>*+*{border-left:1.5px solid var(--mid)!important}
.seg .on{background:var(--mid);color:#fff}
.lbl{font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.5px;text-transform:uppercase;margin:0 0 6px}

/* ---------- event banner + slider ---------- */
.ev{border-bottom:3px solid var(--edge)}
.ev .evin{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:12px 18px;position:relative;flex-wrap:wrap}
.ev .ic{font-size:30px;color:var(--gold);line-height:1}
.ev .tx{flex:1;min-width:200px}
.ev .tg{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--gold)}
.ev .t{font-family:Cinzel,Georgia,serif;font-size:19px;font-weight:700}
.ev .m{font-size:13px;color:#e9e1f7}
.ev .x{position:absolute;top:2px;right:4px;background:none;border:0;color:#e9e1f7;font-size:20px;cursor:pointer}
.slider{position:relative;border:6px solid var(--wood);border-radius:12px;overflow:hidden;background:var(--edge);aspect-ratio:8/3}
.slider .track,.slider .sl{position:absolute;inset:0}
.slider .sl{opacity:0;transition:opacity .6s;pointer-events:none}.slider .sl.on{opacity:1;pointer-events:auto}
.slider img{width:100%;height:100%;object-fit:cover;display:block}
.slider .nv{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;border:0;background:rgba(74,45,122,.75);color:#fff;font-size:24px;line-height:1;cursor:pointer}
.slider .nv.p{left:10px}.slider .nv.n{right:10px}
.slider .dots{position:absolute;bottom:8px;left:0;right:0;display:flex;justify-content:center;gap:5px}
.slider .dots i{width:8px;height:8px;border-radius:50%;background:#fff;opacity:.5;cursor:pointer}.slider .dots i.on{background:var(--gold);opacity:1}

/* ---------- footer ---------- */
.foot{background:var(--edge);color:#e9e1f7;text-align:center;font-size:13px;padding:14px;margin-top:28px}
.foot a{color:#fff}.foot .fl{margin-top:6px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.foot .fl a{color:#cfc2e8;text-decoration:none}

/* ---------- game layout ---------- */
.game{display:flex;gap:24px;justify-content:center;align-items:flex-start;padding:18px 18px 10px}
.col-board{width:calc(var(--bs) + 36px)}
.panel{width:360px;display:flex;flex-direction:column;gap:14px}
.pbar{display:flex;align-items:center;gap:10px;padding:8px 2px;min-height:50px}
.pname{font-weight:700;color:var(--wood);line-height:1.1}.psub{font-size:12px;color:var(--muted)}
.caps{display:flex;align-items:center;margin-left:auto;min-height:24px}
.caps img{width:22px;height:22px;margin-left:-6px}
.caps .adv{font-size:13px;font-weight:700;color:var(--muted);margin-left:6px}
.clock{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:24px;font-weight:700;padding:5px 12px;border-radius:8px;background:var(--soft);color:var(--wood);margin-left:10px;min-width:96px;text-align:center}
.clock.run{background:var(--wood);color:#fff}.clock.low{background:var(--bad);color:#fff}
.tdots{display:none;gap:3px;margin-left:6px}.tdots.on{display:inline-flex}
.tdots i{width:6px;height:6px;border-radius:50%;background:var(--purp);animation:bl 1s infinite}
.tdots i:nth-child(2){animation-delay:.2s}.tdots i:nth-child(3){animation-delay:.4s}
@keyframes bl{0%,100%{opacity:.25}50%{opacity:1}}
.status{font-weight:700;color:var(--wood);font-size:16px;min-height:22px}.status.chk{color:var(--bad)}
.bar{height:8px;background:var(--soft);border-radius:4px;overflow:hidden;margin-top:10px}.bar i{display:block;height:100%;width:0;background:var(--purp)}
.moves{max-height:240px;overflow:auto;font-size:14px}
.moves table{width:100%;border-collapse:collapse}.moves td{padding:6px 12px}
.moves td:first-child{color:var(--muted);width:42px}.moves tr:nth-child(even) td{background:var(--soft)}
.moves td.cur{background:#fbf3d6!important;font-weight:700;color:var(--wood)}
.moves .empty{padding:14px;color:var(--muted)}
.tools{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.tools .btn{padding:9px 4px;font-size:13px}

/* ---------- board component ---------- */
.icb{position:relative;padding:18px;background:var(--wood);background-image:repeating-linear-gradient(90deg,rgba(0,0,0,.12) 0 2px,transparent 2px 9px);border-radius:6px;box-shadow:0 10px 30px rgba(46,26,79,.25)}
.icb .wm{position:absolute;color:rgba(255,255,255,.6);font-family:Georgia,serif;font-size:10.5px;letter-spacing:2px;white-space:nowrap;pointer-events:none}
.icb .wm.t{top:3px;left:0;right:0;text-align:center}.icb .wm.b{bottom:3px;left:0;right:0;text-align:center}
.icb .wm.l{left:9px;top:50%;transform:translate(-50%,-50%) rotate(-90deg)}.icb .wm.r{right:9px;top:50%;transform:translate(50%,-50%) rotate(90deg)}
.icb .board{position:relative;width:var(--bs);height:var(--bs);touch-action:none;user-select:none;-webkit-user-select:none;outline:1px solid var(--edge)}
.icb .sqs{position:absolute;inset:0;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr)}
.icb .sq{position:relative}
.icb .sq.l{background:#fff}
.icb .sq.d{background:var(--purp);background-image:repeating-linear-gradient(0deg,rgba(0,0,0,.07) 0 1px,transparent 1px 5px),repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 2px,transparent 2px 11px)}
.icb .sq.last::before{content:"";position:absolute;inset:0;background:rgba(212,175,55,.45)}
.icb .sq.sel::before{content:"";position:absolute;inset:0;background:rgba(46,26,79,.28)}
.icb .sq.hint::before{content:"";position:absolute;inset:0;background:rgba(46,160,90,.45)}
.icb .sq.chk::before{content:"";position:absolute;inset:0;background:radial-gradient(circle,rgba(230,30,30,.95) 0%,rgba(230,30,30,.6) 35%,rgba(230,30,30,0) 72%)}
.icb .sq.mv::after{content:"";position:absolute;left:50%;top:50%;width:30%;height:30%;transform:translate(-50%,-50%);border-radius:50%;background:rgba(46,26,79,.32)}
.icb .sq.cp::after{content:"";position:absolute;inset:3%;border-radius:50%;border:calc(var(--bs) * .009) solid rgba(46,26,79,.38)}
.icb .sq.over{box-shadow:inset 0 0 0 3px rgba(212,175,55,.9)}
.icb .co{position:absolute;font-size:calc(var(--bs) * .019 + 3px);font-weight:700;line-height:1;pointer-events:none;z-index:1}
.icb .co.r{top:3px;left:4px}.icb .co.f{bottom:3px;right:4px}
.icb .sq.l .co{color:var(--mid)}.icb .sq.d .co{color:#fff}
.icb .pcs{position:absolute;inset:0;pointer-events:none}
.icb .pc{position:absolute;left:0;top:0;width:12.5%;height:12.5%;will-change:transform;z-index:2}
.icb .pc.anim{transition:transform .18s cubic-bezier(.25,.8,.4,1)}
.icb .pc.drag{z-index:10;transition:none;filter:drop-shadow(0 6px 6px rgba(0,0,0,.35))}
.icb .ov{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:rgba(46,26,79,.55);z-index:20}
.icb .ov.on{display:flex}
.icb .promo{background:#fff;border-radius:12px;padding:10px;display:flex;gap:6px;box-shadow:0 12px 30px rgba(0,0,0,.35)}
.icb .promo button{width:calc(var(--bs) * .11);height:calc(var(--bs) * .11);min-width:52px;min-height:52px;border:1.5px solid var(--line);border-radius:10px;background:var(--soft);cursor:pointer;padding:4px}
.icb .promo button:hover{border-color:var(--purp);background:#fff}
.icb .promo img{width:100%;height:100%}
.modal{background:#fff;border-radius:14px;padding:24px 26px;text-align:center;width:min(86%,340px);box-shadow:0 20px 50px rgba(0,0,0,.35)}
.modal .ic{font-size:44px;line-height:1;color:var(--gold)}
.modal h2{margin:8px 0 4px;font-size:26px}
.modal p{color:var(--muted);margin:0 0 16px}
.modal .row{display:flex;gap:10px}.modal .row .btn{flex:1}

/* ---------- landing / login ---------- */
.hero{display:flex;gap:56px;align-items:center;justify-content:center;padding:44px 20px;flex-wrap:wrap}
.hero .side{max-width:460px}
.hero .k{font-size:13px;letter-spacing:3px;color:var(--mid);font-weight:700}
.hero h1{font-size:46px;margin:10px 0 14px}
.hero p{font-size:17px;color:var(--muted)}
.loginbox{width:min(100%,430px)}
.logo{text-align:center;margin-bottom:16px}
.logo .b{font-family:Cinzel,Georgia,serif;font-size:32px;font-weight:700;color:var(--wood)}
.logo .u{font-size:13px;color:var(--muted);letter-spacing:1px}
.otp{font-size:28px;letter-spacing:12px;text-align:center;font-weight:700;color:var(--wood)}
.feat{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:1100px;margin:0 auto;padding:0 18px 20px}
.feat .card{padding:20px;text-align:center}
.feat .i{font-size:40px;color:var(--wood);line-height:1}
.mode{padding:18px;text-align:center}
.mode .i{font-size:40px;color:var(--wood);line-height:1}
.mode .n{font-family:Cinzel,Georgia,serif;font-size:19px;font-weight:700;color:var(--wood);margin:6px 0 2px}
.mode .d{font-size:13px;color:var(--muted);margin-bottom:12px}
.lb td:first-child{width:36px;font-weight:700;color:var(--wood)}

/* ---------- admin ---------- */
.adm{display:flex;min-height:100vh}
.adm .side{width:230px;flex:none;padding:16px 0}
.adm .side .brand{display:block;padding:4px 20px 16px;font-size:19px}
.adm .side a{display:block;color:#e9e1f7;text-decoration:none;padding:10px 20px;font-size:14px}
.adm .side a.on,.adm .side a:hover{background:var(--edge);color:#fff}
.adm .main{flex:1;min-width:0;padding:22px}
.adm .top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:10px;flex-wrap:wrap}
.chart{display:flex;align-items:flex-end;gap:6px;height:160px;padding-top:10px}
.chart .c{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.chart .c i{display:block;width:100%;background:var(--purp);border-radius:4px 4px 0 0;min-height:2px}
.chart .c span{font-size:10px;color:var(--muted);margin-top:4px;white-space:nowrap}
.chart .c b{font-size:11px;color:var(--wood)}
.live{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--ok)}
.live i{width:8px;height:8px;border-radius:50%;background:var(--ok);animation:bl 1.4s infinite}

/* ---------- responsive ---------- */
@media (max-width:920px){
  :root{--bs:min(calc(100vw - 52px), 640px)}
  .nav{flex-wrap:wrap;gap:10px 12px;padding:10px 14px}
  .brand{font-size:19px}
  .links{order:5;width:100%;overflow-x:auto;gap:18px;padding-bottom:2px;scrollbar-width:none}
  .links::-webkit-scrollbar{display:none}
  .links a{white-space:nowrap}
  .game{flex-direction:column;align-items:center;padding:10px 8px 10px}
  .panel{width:calc(var(--bs) + 36px)}
  .g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feat{grid-template-columns:1fr}
  .hero{padding:24px 16px;gap:24px}.hero h1{font-size:34px}
  .guest{padding:7px 12px;font-size:13px}
  .adm{flex-direction:column}.adm .side{width:auto;display:flex;flex-wrap:wrap;padding:8px}.adm .side .brand{width:100%;padding:6px 10px}.adm .side a{padding:8px 10px}
}
@media (max-width:560px){ .g2,.g3,.g4{grid-template-columns:1fr} .g2.k2{grid-template-columns:repeat(2,minmax(0,1fr))} .slider .dots{display:none} .wrap{padding:16px 12px} }