:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*,*:before,*:after{box-sizing:border-box}:root{--primary: #4f8cff;--primary-dark: #2a5dab;--accent: #ffd700;--danger: #ff6b6b;--success: #51cf66;--board-bg: #e3f0ff;--square-bg: #fff;--square-border: #b3c6e0;--marker-bg: #f0f8ff;--shadow: 0 2px 8px #0001;font-family:Segoe UI,Avenir,Helvetica,Arial,sans-serif;color-scheme:light dark;color:#222;background:linear-gradient(135deg,#e3f0ff,#f9f9f9)}body{margin:0;min-width:320px;min-height:100vh;background:var(--board-bg);display:flex;align-items:flex-start;justify-content:center}.App{max-width:700px;margin:2em auto;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:2em 1.5em;box-sizing:border-box;overflow-x:hidden}h1{font-size:2.5em;text-align:center;color:var(--primary-dark);margin-bottom:.5em;letter-spacing:1px}form,.winner-modal{background:#f7faff;border-radius:12px;padding:1.5em;box-shadow:0 1px 4px #0001;margin-bottom:1.5em}textarea,input[type=text],input[type=number]{width:100%;padding:.7em;margin:.5em 0 1em;border:1.5px solid var(--square-border);border-radius:8px;font-size:1em;background:#f9f9ff;transition:border .2s}textarea:focus,input:focus{border:1.5px solid var(--primary);outline:none}button{border-radius:8px;border:none;padding:.7em 1.5em;font-size:1.1em;font-weight:600;background:var(--primary);color:#fff;cursor:pointer;box-shadow:0 1px 4px #0001;transition:background .2s,box-shadow .2s;margin-top:.5em}button:hover,button:focus{background:var(--primary-dark);box-shadow:0 2px 8px #0002}.game-board-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:1.5em auto;background:var(--board-bg);border-radius:16px;box-shadow:var(--shadow);padding:1em;max-width:100%}.board-square{aspect-ratio:1 / 1;width:100%;background:var(--square-bg);border:2px solid var(--square-border);border-radius:12px;text-align:center;font-size:.95em;position:relative;box-shadow:0 1px 4px #0001;transition:background .2s,border .2s;padding:2px;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-start;align-items:center}.board-square:hover{background:#e6f7ff;border-color:var(--primary)}.square-num{position:absolute;top:6px;left:10px;font-size:.8em;color:#aaa}.square-special{font-size:1.3em;margin-top:18px}.square-question{margin-top:10px;font-size:.98em;color:#333;min-height:2em;word-wrap:break-word;text-align:center}.square-markers{margin-top:10px;font-size:1.4em;display:flex;justify-content:center;gap:.2em}.winner-modal{background:#fffbe6;border:2px solid var(--accent);padding:2em;text-align:center;margin-top:2em;border-radius:14px;box-shadow:0 2px 8px #ffd70044}ul{list-style:none;padding:0;margin:0 0 1em;display:flex;gap:1em;justify-content:center}li{font-size:1.1em;padding:.3em .7em;border-radius:6px;background:#f0f8ff;color:var(--primary-dark);font-weight:500}li[style*=bold]{background:var(--primary);color:#fff}