:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#0a0a0a;color:#fafafa}.shell{min-height:100vh;display:grid;place-items:center;padding:2rem}.game{display:flex;flex-direction:column;align-items:center;gap:1.5rem}h1{margin:0;font-size:2rem;font-weight:700;letter-spacing:-.02em}.status{margin:0;font-size:1.15rem;color:#ffffffb3;min-height:1.5em}.board{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;width:min(80vw,320px);height:min(80vw,320px)}.cell{display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:700;border:1px solid rgba(255,255,255,.15);border-radius:.5rem;background:#ffffff0a;color:#fafafa;cursor:pointer;transition:background .15s;padding:0;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.cell:hover:not(:disabled){background:#ffffff1a}.cell:disabled{cursor:default}.cell.x{color:#60a5fa}.cell.o{color:#f472b6}.reset{font-family:inherit;font-size:.95rem;font-weight:500;padding:.6rem 1.5rem;border-radius:.5rem;border:1px solid rgba(255,255,255,.15);background:#ffffff0f;color:#fafafa;cursor:pointer;transition:background .15s}.reset:hover{background:#ffffff1f}