:root{--font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, monospace}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;font-family:var(--font)}.app.dark{--bg: #0a0a0f;--bg-card: #12121a;--bg-cell: #1a1a28;--bg-cell-hover: #242438;--border: rgba(255, 255, 255, .08);--border-cell: rgba(255, 255, 255, .1);--text: #f0f0f5;--text-muted: rgba(255, 255, 255, .5);--text-dim: rgba(255, 255, 255, .35);--x-color: #60a5fa;--x-glow: rgba(96, 165, 250, .3);--o-color: #f472b6;--o-glow: rgba(244, 114, 182, .3);--win-glow: rgba(250, 204, 21, .4);--accent: #818cf8;--accent-dim: rgba(129, 140, 248, .15);--draw-color: #fbbf24;--btn-bg: rgba(255, 255, 255, .05);--btn-bg-active: rgba(129, 140, 248, .2);--btn-border: rgba(255, 255, 255, .1);--btn-border-active: rgba(129, 140, 248, .5)}.app.light{--bg: #f5f5fa;--bg-card: #ffffff;--bg-cell: #eeeef5;--bg-cell-hover: #ddddf0;--border: rgba(0, 0, 0, .08);--border-cell: rgba(0, 0, 0, .1);--text: #1a1a2e;--text-muted: rgba(0, 0, 0, .5);--text-dim: rgba(0, 0, 0, .3);--x-color: #2563eb;--x-glow: rgba(37, 99, 235, .2);--o-color: #db2777;--o-glow: rgba(219, 39, 119, .2);--win-glow: rgba(234, 179, 8, .3);--accent: #6366f1;--accent-dim: rgba(99, 102, 241, .1);--draw-color: #ca8a04;--btn-bg: rgba(0, 0, 0, .04);--btn-bg-active: rgba(99, 102, 241, .15);--btn-border: rgba(0, 0, 0, .1);--btn-border-active: rgba(99, 102, 241, .4)}.app{min-height:100vh;background:var(--bg);color:var(--text);display:grid;place-items:center;padding:1rem;transition:background .3s,color .3s}.container{width:100%;max-width:420px;display:flex;flex-direction:column;gap:1.25rem}.header{display:flex;align-items:center;justify-content:space-between}.title{font-size:1.6rem;font-weight:800;letter-spacing:-.03em;display:flex;gap:.2em;align-items:baseline}.title-x{color:var(--x-color)}.title-o{color:var(--o-color)}.title-d{color:var(--text)}.title-deluxe{font-size:.6em;font-weight:500;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin-left:.3em}.theme-btn{width:2.5rem;height:2.5rem;border-radius:50%;border:1px solid var(--border);background:var(--btn-bg);color:var(--text);font-size:1.2rem;cursor:pointer;display:grid;place-items:center;transition:all .2s}.theme-btn:hover{background:var(--accent-dim);border-color:var(--accent)}.controls{display:flex;gap:1rem;flex-wrap:wrap}.control-group{display:flex;flex-direction:column;gap:.35rem}.control-label{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted)}.button-group{display:flex;gap:.3rem}.btn{padding:.4rem .85rem;border-radius:.5rem;border:1px solid var(--btn-border);background:var(--btn-bg);color:var(--text-muted);font-size:.8rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:var(--font)}.btn:hover{background:var(--accent-dim);color:var(--text)}.btn.active{background:var(--btn-bg-active);border-color:var(--btn-border-active);color:var(--accent)}.scoreboard{display:flex;gap:.5rem}.score{flex:1;text-align:center;padding:.6rem .5rem;border-radius:.6rem;border:1px solid var(--border);background:var(--bg-card)}.score-label{display:block;font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin-bottom:.15rem}.score-value{display:block;font-size:1.5rem;font-weight:800;letter-spacing:-.02em}.score-x .score-value{color:var(--x-color)}.score-o .score-value{color:var(--o-color)}.score-draw .score-value{color:var(--draw-color)}.status{text-align:center;font-size:1rem;font-weight:700;padding:.5rem;border-radius:.5rem;transition:all .3s;color:var(--text-muted)}.status.win{color:var(--accent);background:var(--accent-dim);animation:pulse 1s ease-in-out infinite alternate}.status.draw{color:var(--draw-color);background:#facc1514}@keyframes pulse{0%{opacity:.8}to{opacity:1}}.board-wrapper{position:relative;aspect-ratio:1;width:100%}.board{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;width:100%;height:100%}.cell{background:var(--bg-cell);border:1px solid var(--border-cell);border-radius:.75rem;cursor:pointer;display:grid;place-items:center;position:relative;transition:all .2s;font-size:0;outline:none}.cell.hoverable:hover{background:var(--bg-cell-hover);border-color:var(--accent);transform:scale(1.03)}.cell.filled{cursor:default}.cell.win-cell{border-color:var(--draw-color);background:#facc1514;animation:winPulse .6s ease-in-out infinite alternate}@keyframes winPulse{0%{box-shadow:0 0 8px var(--win-glow)}to{box-shadow:0 0 20px var(--win-glow)}}.cell-mark{font-size:2.8rem;font-weight:800;line-height:1;animation:popIn .25s cubic-bezier(.34,1.56,.64,1) backwards}.cell-mark.x{color:var(--x-color);text-shadow:0 0 12px var(--x-glow)}.cell-mark.o{color:var(--o-color);text-shadow:0 0 12px var(--o-glow)}.cell-mark.winning{animation:winBounce .6s cubic-bezier(.34,1.56,.64,1) infinite alternate}@keyframes popIn{0%{transform:scale(0) rotate(-15deg);opacity:0}to{transform:scale(1) rotate(0);opacity:1}}@keyframes winBounce{0%{transform:scale(1)}to{transform:scale(1.15)}}.win-line-svg{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;z-index:2}.win-line{stroke:var(--draw-color);stroke-width:6;stroke-linecap:round;filter:drop-shadow(0 0 8px var(--win-glow));stroke-dasharray:450;stroke-dashoffset:450;animation:drawLine .5s .2s ease-out forwards}@keyframes drawLine{to{stroke-dashoffset:0}}.actions{display:flex;gap:.5rem}.action-btn{flex:1;padding:.6rem;border-radius:.5rem;border:1px solid var(--btn-border);background:var(--btn-bg);color:var(--text-muted);font-size:.8rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:var(--font)}.action-btn:hover:not(:disabled){background:var(--accent-dim);color:var(--text);border-color:var(--accent)}.action-btn:disabled{opacity:.3;cursor:not-allowed}.action-btn.primary{background:var(--accent-dim);border-color:var(--btn-border-active);color:var(--accent)}.action-btn.primary:hover{background:var(--btn-bg-active)}.history{border:1px solid var(--border);border-radius:.6rem;padding:.75rem;background:var(--bg-card)}.history-title{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin-bottom:.5rem}.history-moves{display:flex;flex-wrap:wrap;gap:.25rem .6rem}.history-move{font-family:var(--mono);font-size:.72rem;color:var(--text-muted)}.history-move.x{color:var(--x-color)}.history-move.o{color:var(--o-color)}.footer{display:flex;justify-content:center;gap:.5rem}.footer-tag{font-family:var(--mono);font-size:.6rem;letter-spacing:.15em;text-transform:uppercase;color:var(--text-dim);border:1px solid var(--border);padding:.2rem .5rem;border-radius:.25rem}@media(max-width:480px){.container{gap:1rem}.title{font-size:1.3rem}.cell-mark{font-size:2.2rem}.board{gap:.35rem}.cell{border-radius:.5rem}.controls{flex-direction:column;gap:.75rem}.scoreboard{gap:.35rem}.score{padding:.4rem}.score-value{font-size:1.2rem}}@media(min-width:481px)and (max-width:768px){.cell-mark{font-size:2.5rem}}