: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}.card{border:1px solid rgba(255,255,255,.1);padding:2rem;border-radius:.75rem;background:#ffffff05}h1{margin:0 0 .75rem;font-size:1.5rem;font-weight:600;letter-spacing:-.02em}p{margin:0;color:#ffffffa6;font-size:.95rem}.size-btn{background:#ffffff14;border:1px solid rgba(255,255,255,.15);color:#fafafa;padding:.5rem 1.25rem;border-radius:.5rem;font-size:.95rem;cursor:pointer;transition:background .15s;font-family:inherit}.size-btn:hover{background:#ffffff26}.game-header{margin-bottom:1rem}.score-display{display:flex;justify-content:center;gap:2rem;font-size:1.1rem;font-weight:600;margin-bottom:.5rem}.turn-indicator{font-size:.95rem;font-weight:500}svg line{transition:stroke .15s}