*,:before,:after{box-sizing:border-box}:root{--primary-color:#6366f1;--accent-color:#8b5cf6;--background:#fff;--surface:#f9fafb;--text-primary:#111827;--text-secondary:#6b7280;--border:#e5e7eb;--player-x:#ef4444;--player-o:#3b82f6;--winner-bg:#dcfce7;--winner-text:#166534}body{-webkit-font-smoothing:antialiased;background-color:var(--background);color:var(--text-primary);margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.screen{flex-direction:column;align-items:center;gap:2rem;min-height:100vh;padding:2rem 1rem;display:flex}.game-header{text-align:center;width:100%;max-width:600px}.game-header h1{color:var(--primary-color);margin:0 0 .5rem;font-size:2.5rem;font-weight:700}.game-status{justify-content:center;align-items:center;gap:.5rem;min-height:2rem;margin:1rem 0;font-size:1.25rem;font-weight:600;display:flex}.current-player{color:var(--text-secondary)}.player-x-turn{color:var(--player-x)}.player-o-turn{color:var(--player-o)}.winner-announcement{background-color:var(--winner-bg);color:var(--winner-text);border-radius:.5rem;padding:.75rem 1.5rem;font-weight:700}.draw-announcement{background-color:var(--surface);color:var(--text-secondary);border-radius:.5rem;padding:.75rem 1.5rem;font-weight:700}.game-board{background-color:var(--border);border-radius:1rem;grid-template-columns:repeat(3,1fr);gap:.75rem;width:100%;max-width:400px;padding:.75rem;display:grid;box-shadow:0 4px 6px -1px #0000001a}.cell{aspect-ratio:1;background-color:var(--surface);cursor:pointer;border:none;border-radius:.5rem;justify-content:center;align-items:center;min-height:100px;font-size:3rem;font-weight:700;transition:all .2s;display:flex}.cell:hover:not(.cell-x):not(.cell-o){background-color:var(--background);transform:scale(1.02);box-shadow:0 2px 4px #0000001a}.cell:active:not(.cell-x):not(.cell-o){transform:scale(.98)}.cell.cell-x{color:var(--player-x);cursor:not-allowed;background-color:var(--background)}.cell.cell-o{color:var(--player-o);cursor:not-allowed;background-color:var(--background)}.cell.cell-disabled{cursor:not-allowed;opacity:.7}.game-controls{flex-direction:column;gap:1rem;width:100%;max-width:400px;display:flex}.button{cursor:pointer;text-align:center;border:none;border-radius:.5rem;padding:.875rem 1.5rem;font-family:inherit;font-size:1rem;font-weight:600;transition:all .2s}.button-primary{background-color:var(--primary-color);color:#fff}.button-primary:hover{background-color:var(--accent-color);transform:translateY(-1px);box-shadow:0 4px 6px -1px #0000001a}.button-primary:active{transform:translateY(0)}.button-secondary{background-color:var(--surface);color:var(--text-primary);border:2px solid var(--border)}.button-secondary:hover{border-color:var(--primary-color);color:var(--primary-color)}.score-board{background-color:var(--surface);border:2px solid var(--border);border-radius:1rem;width:100%;max-width:400px;padding:1.5rem}.score-board h2{text-align:center;color:var(--text-primary);margin:0 0 1rem;font-size:1.25rem;font-weight:600}.score-grid{grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1rem;display:grid}.score-item{text-align:center;background-color:var(--background);border-radius:.5rem;padding:1rem}.score-label{color:var(--text-secondary);margin-bottom:.25rem;font-size:.875rem;font-weight:500}.score-value{font-size:2rem;font-weight:700}.score-x{color:var(--player-x)}.score-o{color:var(--player-o)}.score-draw{color:var(--text-secondary)}@media (width<=480px){.game-header h1{font-size:2rem}.cell{min-height:80px;font-size:2rem}.game-board{gap:.5rem;padding:.5rem}.screen{padding:1rem .5rem}}