:root{--bg:#0c0e12;--bg-elevated:#141820;--bg-card:#1a1f2a;--bg-card-hover:#222836;--line:#e8c57224;--gold:#e8c572;--gold-dim:#b8943c;--text:#f3efe4;--muted:#9aa3b5;--danger:#e26d6d;--ok:#7dcea0;--white-piece:#f7f1e4;--black-piece:#1b1e26;--board-light:#e6d3b3;--board-dark:#3f5c51;--last-move:#e8c5726b;--legal:#f4efe4eb;--legal-ring:#12141a80;--check:#e26d6d73;--selected:#e8c5728c;--radius:18px;--shadow:0 18px 50px #00000059}*{box-sizing:border-box}html,body,#root{background:radial-gradient(1200px 700px at 20% -10%, #1b2230 0%, var(--bg) 55%);min-height:100%;color:var(--text);margin:0;font-family:Segoe UI,Trebuchet MS,system-ui,sans-serif}button,input{font-family:inherit}button{cursor:pointer}.app-shell{flex-direction:column;min-height:100dvh;display:flex}.center-screen{place-items:center;min-height:100dvh;padding:24px;display:grid}.brand{text-align:center;flex-direction:column;align-items:center;gap:10px;display:flex}.brand-mark{border:1px solid var(--line);width:72px;height:72px;box-shadow:var(--shadow);background:linear-gradient(#1d2330,#12151c);border-radius:20px;place-items:center;font-size:34px;display:grid}.brand h1{letter-spacing:.18em;color:var(--gold);margin:0;font-size:13px;font-weight:700}.brand p,.muted{color:var(--muted);margin:0}.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);width:min(440px,100%);box-shadow:var(--shadow);padding:28px}.btn{border:0;border-radius:12px;padding:12px 16px;font-size:14px;font-weight:600;transition:transform .12s,background .12s,opacity .12s}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-gold{color:#16130c;background:linear-gradient(#f0d48a,#c9a227)}.btn-ghost{color:var(--text);border:1px solid var(--line);background:0 0}.btn-danger{color:#ffd5d5;background:#3a1f24;border:1px solid #e26d6d59}.stack{flex-direction:column;gap:12px;display:flex}.row{align-items:center;gap:10px;display:flex}.spinner{border:2px solid #e8c57233;border-top-color:var(--gold);border-radius:50%;width:22px;height:22px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.notice{border:1px solid var(--line);color:var(--gold);background:#e8c57214;border-radius:12px;padding:10px 12px;font-size:13px}.notice.danger{color:#ffc9c9;background:#e26d6d1a;border-color:#e26d6d47}.lobby,.game{gap:16px;width:min(1180px,100%);margin:0 auto;padding:18px 16px 28px;display:grid}.topbar{justify-content:space-between;align-items:center;gap:12px;display:flex}.player-list{gap:10px;display:grid}.player-chip{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;align-items:center;gap:12px;padding:12px;display:flex}.avatar{object-fit:cover;border:1px solid var(--line);background:#2a3140;border-radius:50%;width:42px;height:42px}.role-tag{letter-spacing:.08em;text-transform:uppercase;color:var(--gold);margin-left:auto;font-size:11px;font-weight:700}.status-dot{background:var(--ok);border-radius:50%;width:8px;height:8px}.status-dot.off{background:#6b7280}.time-options{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.time-options button{background:var(--bg-elevated);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:10px 8px;font-size:13px}.time-options button.active{border-color:var(--gold);color:var(--gold)}.game-layout{grid-template-columns:minmax(280px,1fr) minmax(220px,300px);align-items:start;gap:18px;display:grid}.board-wrap{justify-items:center;gap:12px;display:grid}.board{aspect-ratio:1;width:min(640px,100%);box-shadow:var(--shadow);border:1px solid var(--line);touch-action:none;-webkit-user-select:none;user-select:none;border-radius:14px;grid-template-rows:repeat(8,1fr);grid-template-columns:repeat(8,1fr);display:grid;overflow:hidden}.square{place-items:center;display:grid;position:relative}.square.light{background:var(--board-light)}.square.dark{background:var(--board-dark)}.square.last{box-shadow:inset 0 0 0 999px var(--last-move)}.square.selected{box-shadow:inset 0 0 0 999px var(--selected)}.square.check{box-shadow:inset 0 0 0 999px var(--check)}.square.hint:after{content:"";pointer-events:none;background:#e8c57238;position:absolute;inset:0}.legal-dot{background:var(--legal);width:30%;height:30%;box-shadow:0 0 0 2px var(--legal-ring);pointer-events:none;z-index:2;border-radius:50%;position:absolute}.legal-capture{border:5px solid var(--legal);box-shadow:0 0 0 2px var(--legal-ring);pointer-events:none;z-index:2;border-radius:50%;position:absolute;inset:10%}.piece{cursor:grab;filter:drop-shadow(0 3px 2px #00000047);z-index:1;width:82%;height:82%;transition:transform .12s}.piece:active{cursor:grabbing}.piece.moving{transition:transform .18s}.side-panel{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);gap:14px;padding:16px;display:grid}.clock{letter-spacing:.04em;font-family:ui-monospace,Cascadia Mono,monospace;font-size:28px;font-weight:500}.clock.active{color:var(--gold)}.moves{max-height:240px;color:var(--muted);font-family:ui-monospace,Cascadia Mono,monospace;font-size:13px;line-height:1.7;overflow:auto}.moves ol{margin:0;padding-left:22px}.overlay{z-index:20;background:#080a0e9e;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.promotion{gap:10px;display:flex}.promotion button{border:1px solid var(--line);background:var(--bg-elevated);border-radius:14px;width:64px;height:64px}.collapsible-toggle{display:none}@media (width>=861px){.desktop-only{display:block}}.toast{background:var(--bg-card);border:1px solid var(--line);z-index:30;border-radius:12px;padding:10px 14px;font-size:13px;position:fixed;bottom:16px;left:50%;transform:translate(-50%)}@media (width<=860px){.desktop-only{display:none}.game-layout{grid-template-columns:1fr}.time-options{grid-template-columns:repeat(2,1fr)}.side-panel{order:2}.collapsible-toggle{width:100%;display:block}.clock{font-size:22px}.lobby,.game{padding:12px}}