:root{--bg:#1a1a2e;--bg-card:#16213e;--accent:#e94560;--accent-hover:#ff6b81;--accent-light:#e9456026;--text:#eee;--text-muted:#999;--cell-bg:#0f3460;--cell-hover:#1a4a7a;--cell-border:#1a3a5c;--win-glow:#e94560;--symbol-x:#e94560;--symbol-o:#4fc3f7}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;min-height:100%;overflow-x:hidden}body{background:var(--bg);color:var(--text);-webkit-user-select:none;user-select:none;font-family:Segoe UI,system-ui,-apple-system,sans-serif}.menu-container{justify-content:center;align-items:center;min-height:100dvh;padding:20px;display:flex}.menu-card{background:var(--bg-card);text-align:center;border-radius:16px;width:100%;max-width:420px;padding:36px 32px;box-shadow:0 12px 40px #00000080}.menu-title{background:linear-gradient(135deg, var(--accent), var(--symbol-o));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:4px;font-size:2rem;font-weight:800}.menu-subtitle{color:var(--text-muted);margin-bottom:28px;font-size:.9rem}.menu-section{text-align:left;margin-bottom:20px}.menu-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:.85rem;font-weight:600;display:block}.menu-options{grid-template-columns:1fr 1fr;gap:8px;display:grid}.menu-options-3{grid-template-columns:1fr 1fr 1fr}.menu-option{border:2px solid var(--cell-border);background:var(--cell-bg);color:var(--text);cursor:pointer;border-radius:8px;padding:10px 16px;font-size:.9rem;font-weight:600;transition:all .15s}.menu-option:hover{border-color:var(--accent);background:var(--accent-light)}.menu-option.selected{border-color:var(--accent);background:var(--accent);color:#fff}.menu-hint{color:var(--text-muted);margin-top:6px;font-size:.78rem;font-style:italic}.btn-start{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;width:100%;margin-top:12px;padding:14px;font-size:1.1rem;font-weight:700;transition:background .15s,transform .1s}.btn-start:hover{background:var(--accent-hover)}.btn-start:active{transform:scale(.97)}.game-container{flex-direction:column;align-items:center;gap:16px;max-width:1000px;min-height:100dvh;margin:0 auto;padding:16px;display:flex}.board-header{flex-shrink:0;justify-content:space-between;align-items:center;width:100%;display:flex}.board-header h1{color:#fff;font-size:1.3rem;font-weight:700}.board-controls{align-items:center;gap:8px;display:flex}.gear-btn{color:#ffffffb3;cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:4px;transition:color .15s,background .15s;display:flex}.gear-btn:hover{color:#fff;background:#ffffff26}.scoreboard{gap:12px;width:100%;max-width:400px;display:flex}.score-item{text-align:center;background:var(--bg-card);border:2px solid #0000;border-radius:8px;flex:1;padding:8px 4px;transition:border-color .2s}.score-item.active{border-color:var(--accent)}.score-label{color:var(--text-muted);text-transform:uppercase;margin-bottom:2px;font-size:.7rem;font-weight:600;display:block}.score-value{font-size:1.4rem;font-weight:800;display:block}.score-draw-item .score-value{color:var(--text-muted)}.status-bar{text-align:center}.status-text{color:var(--text-muted);font-size:1rem;font-weight:600}.status-end{color:var(--accent);font-size:1.2rem}.grid-wrapper{width:100%}.grid-scrollable{border:2px solid var(--cell-border);border-radius:10px;max-width:100%;max-height:80vh;overflow:auto}.grid{gap:2px;display:grid}.grid-3{aspect-ratio:1;gap:6px;width:100%}.grid-large{width:max-content}.cell{background:var(--cell-bg);border:2px solid var(--cell-border);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;transition:background .12s,border-color .12s,transform .1s;display:flex;position:relative}.cell:hover:not(:disabled){background:var(--cell-hover);border-color:#fff3}.cell:active:not(:disabled){transform:scale(.95)}.cell:disabled{cursor:default}.cell-small{border-width:1px;border-radius:3px;min-width:0;min-height:0;padding:0}.cell-symbol-small{font-size:.8rem!important}.cell-symbol-small.symbol-O{border:2px solid var(--symbol-o);box-sizing:border-box;border-radius:50%;width:40%;height:40%;font-size:0!important}.cell-filled{cursor:default}.cell-win{background:var(--accent-light);border-color:var(--win-glow);box-shadow:0 0 16px #e9456066}.cell-symbol{font-weight:800;line-height:1;animation:.2s symbolPop}.grid-3 .cell-symbol{font-size:clamp(2rem,10vw,4.5rem)}.grid-3 .symbol-O{border:5px solid var(--symbol-o);box-sizing:border-box;border-radius:50%;width:30%;height:30%;font-size:0!important}.symbol-X{color:var(--symbol-x)}.symbol-O{color:var(--symbol-o)}@keyframes symbolPop{0%{opacity:0;transform:scale(0)}60%{transform:scale(1.2)}to{opacity:1;transform:scale(1)}}.game-actions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.btn{color:#fff;cursor:pointer;background:#ffffff1f;border:none;border-radius:8px;padding:8px 16px;font-size:.85rem;font-weight:600;transition:background .15s}.btn:hover{background:#ffffff38}.btn:active{transform:scale(.96)}.btn-new{background:var(--accent);color:#fff}.btn-new:hover{background:var(--accent-hover)}.modal-overlay{z-index:3000;background:#000000a6;justify-content:center;align-items:center;padding:16px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal-content{color:#333;text-align:left;background:#fff;border-radius:14px;width:100%;max-width:640px;max-height:85vh;padding:28px 32px 32px;line-height:1.65;position:relative;overflow-y:auto;box-shadow:0 16px 50px #0006}.modal-close{color:#999;cursor:pointer;background:0 0;border:none;padding:0 4px;font-size:1.8rem;line-height:1;transition:color .15s;position:absolute;top:12px;right:16px}.modal-close:hover{color:#333}.seo-article h1{color:var(--accent,#e94560);margin-bottom:16px;padding-right:30px;font-size:1.4rem;line-height:1.3}.seo-article h2{color:var(--accent,#e94560);margin:20px 0 8px;font-size:1.1rem}.seo-article p{margin-bottom:12px;font-size:.95rem}.seo-article ul,.seo-article ol{margin:8px 0 12px 20px;font-size:.95rem}.seo-article li{margin-bottom:6px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (width<=520px){.game-container{gap:10px;padding:10px}.board-header h1{font-size:1rem}.scoreboard{gap:6px}.score-item{padding:6px 2px}.score-label{font-size:.6rem}.score-value{font-size:1.1rem}.grid-3{gap:4px}.cell{border-radius:6px}.btn{padding:6px 10px;font-size:.75rem}.menu-card{padding:24px 20px}.menu-title{font-size:1.5rem}.modal-content{max-height:90vh;padding:20px 18px 24px}.seo-article h1{font-size:1.15rem}.seo-article h2{font-size:1rem}.seo-article p,.seo-article ul,.seo-article ol{font-size:.88rem}}@media (width>=521px) and (width<=768px){.grid-wrapper.grid-3-wrapper{max-width:360px}}@media (width>=900px){.grid-wrapper.grid-3-wrapper{max-width:450px}.game-container{gap:20px}}@media (height<=500px) and (orientation:landscape){.game-container{flex-flow:wrap;justify-content:center;align-items:flex-start;gap:6px;padding:6px}.board-header{width:100%}.grid-wrapper.grid-3-wrapper{max-width:280px;max-height:70vh}.scoreboard{flex-direction:column;max-width:200px}}