:root{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:#f0f0f0;color:#222}body{display:flex;flex-direction:column;align-items:center}#root{display:flex;flex-direction:column;align-items:center;padding-top:2rem}h1{margin:0 0 1rem;font-size:1.75rem;font-weight:700}.info{margin-bottom:1rem;font-size:1.1rem;font-weight:500}.grid{display:grid;grid-template-columns:repeat(8,50px);gap:3px;background:#333;padding:4px;border-radius:6px}.cell{width:50px;height:50px;background:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .15s}.cell.path{background:#3498db}.cell.start{background:#27ae60;color:#fff}.cell.end{background:#e74c3c;color:#fff}.cell.visited{background:#5dade2}.reset-btn{margin-top:1rem;padding:.5rem 1.5rem;font-size:1rem;border:none;border-radius:6px;background:#333;color:#fff;cursor:pointer}.reset-btn:hover{background:#555}.win-banner{margin-top:.75rem;padding:.6rem 1.5rem;background:#27ae60;color:#fff;border-radius:6px;font-weight:600;font-size:1.1rem}