:root{color-scheme:dark;--bg: #050816;--bg-alt: #0b1020;--accent: #60a5fa;--accent-soft: rgba(96, 165, 250, .12);--danger: #f97373;--text: #e5e7eb;--muted: #9ca3af;--border: #1f2933}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at top,#1f2933 0,#050816 55%);color:var(--text);min-height:100vh}#root{min-height:100vh;display:flex;align-items:stretch;justify-content:center}.app-root{width:100%;max-width:1100px;padding:24px 16px 32px;display:flex;flex-direction:column;gap:16px}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.app-header h1{margin:0;font-size:1.5rem;letter-spacing:.03em}.player-id-badge{padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:#0f172acc;font-size:.8rem;color:var(--muted)}.screen{flex:1;border-radius:20px;border:1px solid rgba(148,163,184,.22);background:linear-gradient(145deg,#0f172af2,#0f172ad9);box-shadow:0 30px 80px #0f172ab3,inset 0 0 0 1px #94a3b81f;padding:20px 22px;display:flex;flex-direction:column;gap:18px}.start-screen{align-items:center;justify-content:center;gap:32px}.board-animation{width:260px;height:260px;border-radius:28px;padding:14px;background:radial-gradient(circle at top left,rgba(96,165,250,.45),transparent),radial-gradient(circle at bottom right,rgba(244,114,182,.5),transparent);box-shadow:0 25px 60px #0f172ae6,0 0 0 1px #94a3b840}.board-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;width:100%;height:100%}.board-cell{border-radius:14px;background:#0f172af2;border:1px solid rgba(148,163,184,.3);display:flex;align-items:center;justify-content:center;overflow:hidden}.mark{width:70%;height:70%;border-radius:999px;border:3px solid transparent;position:relative;animation:float 2.6s ease-in-out infinite}.mark-x{border-color:#60a5fae6;box-shadow:0 0 20px #60a5fab3}.mark-o{border-color:#f472b6e6;box-shadow:0 0 20px #f472b6b3}.mark:before,.mark:after{content:"";position:absolute;top:25%;right:25%;bottom:25%;left:25%;border-radius:inherit;border:inherit;opacity:.5}.mark:after{top:40%;right:40%;bottom:40%;left:40%;opacity:.3}@keyframes float{0%,to{transform:translateY(0) scale(1);opacity:.9}50%{transform:translateY(-5px) scale(1.05);opacity:1}}.start-actions{display:flex;flex-direction:column;gap:12px;min-width:240px}button{border:none;cursor:pointer;font:inherit;transition:background .15s ease,transform .08s ease,box-shadow .15s ease,border-color .15s ease,color .15s ease}button:disabled{opacity:.55;cursor:default;transform:none!important;box-shadow:none!important}button.primary{padding:10px 16px;border-radius:999px;background:linear-gradient(135deg,#3b82f6,#22c1c3);color:#fff;font-weight:600;box-shadow:0 14px 30px #2563eb80,0 0 0 1px #bfdbfe33}button.primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 20px 35px #2563ebb3,0 0 0 1px #bfdbfe4d}button.secondary{padding:9px 15px;border-radius:999px;background:#0f172ae6;border:1px solid rgba(148,163,184,.35);color:var(--text)}button.secondary:hover:not(:disabled){background:#0f172afa;transform:translateY(-1px)}button.danger{padding:9px 15px;border-radius:999px;background:#f871711f;color:var(--danger);border:1px solid rgba(248,113,113,.65)}button.danger:hover:not(:disabled){background:#f8717129;transform:translateY(-1px)}button.full-width{width:100%}.form-screen h2{margin:0 0 12px}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px 18px}.form-row{display:flex;flex-direction:column;gap:4px}.form-row label{font-size:.85rem;color:var(--muted)}input[type=text],input[type=number]{border-radius:10px;border:1px solid rgba(148,163,184,.5);background:#0f172ae6;padding:7px 9px;color:var(--text);font:inherit}input[readonly]{opacity:.7}.players-section{margin-top:14px}.players-section h3{margin:0 0 4px}.players-section p{margin:0 0 8px;font-size:.85rem;color:var(--muted)}.players-list{display:flex;flex-direction:column;gap:6px}.player-row{display:flex;align-items:center;justify-content:space-between;padding:6px 10px;border-radius:999px;background:#0f172ae6;border:1px solid rgba(148,163,184,.3)}.player-type{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--muted)}.form-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}.game-screen{gap:14px}.game-header-row{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.game-header-row h2{margin:0 0 4px}.game-id{margin:0;font-size:.8rem;color:var(--muted)}.status-pill{padding:6px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:.8rem;border:1px solid rgba(96,165,250,.7)}.game-main{display:grid;grid-template-columns:minmax(0,2fr) minmax(260px,1.4fr);gap:16px}.board-wrapper{display:flex;align-items:center;justify-content:center}.tic-board{display:grid;gap:6px;width:min(520px,100%);aspect-ratio:1;padding:10px;border-radius:26px;background:radial-gradient(circle at top,#1f2937,#020617);box-shadow:inset 0 0 0 1px #94a3b840,0 22px 50px #0f172ae6;grid-auto-rows:1fr}.tic-cell{min-height:0;min-width:0;aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:14px;background:#0f172af2;border:1px solid rgba(148,163,184,.45);color:var(--text);font-size:calc(12rem / var(--board-size, 3));font-weight:600}.tic-cell--hint{opacity:.2}.tic-cell--0{color:#60a5fa}.tic-cell--1{color:#f472b6}.tic-cell--2{color:#34d399}.tic-cell--3{color:#fbbf24}.tic-cell--4{color:#a78bfa}.tic-cell--5{color:#2dd4bf}.tic-cell--6{color:#fb923c}.tic-cell--7{color:#f87171}.sidebar{display:flex;flex-direction:column;gap:14px}.controls-section,.players-section{border-radius:18px;background:#0f172af0;border:1px solid rgba(148,163,184,.3);padding:12px 13px}.controls-section h3,.players-section h3{margin:0 0 8px}.controls-buttons{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}button.hint{background:#004916e6;border:1px solid rgba(0,73,22,.9);color:var(--text);font-size:1.1rem;padding:9px 15px;border-radius:999px}button.hint:disabled{opacity:.5;cursor:default}.players-section ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}.player{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;border-radius:999px;background:#0f172ae6;border:1px solid rgba(148,163,184,.25);font-size:.78rem}.player.current-player{border-color:#60a5fae6;box-shadow:0 0 10px #60a5fa80}.badge{padding:2px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:.7rem}.error-banner{padding:8px 12px;border-radius:999px;background:#f871712e;border:1px solid rgba(248,113,113,.7);color:#fecaca;font-size:.83rem}.loading-overlay{font-size:.8rem;align-self:flex-start;padding:4px 10px;border-radius:999px;border:1px solid rgba(148,163,184,.5);background:#0f172ae6;color:var(--muted)}@media (max-width: 840px){.game-main{grid-template-columns:minmax(0,1fr)}.sidebar{order:-1}}@media (max-width: 640px){.screen{padding:16px 14px}.app-header{flex-direction:column;align-items:flex-start}.board-animation{width:220px;height:220px}}