: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:#000;color:#fff;font-family:Arial,sans-serif}#root{display:flex;flex-direction:column;align-items:center;padding:2rem}h1{font-size:1.75rem;margin-bottom:1rem}.game-info{display:flex;gap:2rem;margin-bottom:1rem;font-size:1.1rem}.board{display:flex;flex-direction:column;gap:0}.row{display:flex}.cell{width:28px;height:28px;border:1px solid #444;background:#222;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:14px;-webkit-user-select:none;user-select:none;transition:background .1s}.cell:hover:not(.revealed){background:#333}.cell.revealed{background:#0a0a0a;border-color:#333;cursor:default}.cell.mine-hit{background:#400}.n1{color:#5bf}.n2{color:#5b5}.n3{color:#f55}.n4{color:#a5f}.n5{color:#f5a}.n6{color:#5ff}.n7{color:#fff}.n8{color:#aaa}.game-over-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:10}.game-over-overlay h2{font-size:2.5rem;margin-bottom:1rem}.game-over-overlay button{padding:.75rem 2rem;font-size:1.1rem;border:1px solid #555;background:#222;color:#fff;border-radius:.5rem;cursor:pointer}.game-over-overlay button:hover{background:#333}