*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background-color:silver;display:flex;justify-content:center;padding:20px}#app{text-align:center}h1{margin-bottom:20px;color:#333}#controls{margin-bottom:15px;display:flex;gap:15px;justify-content:center;align-items:center;flex-wrap:wrap}#controls label{display:flex;align-items:center;gap:5px}#controls input{width:60px;padding:5px;border:2px inset #fff}#controls button{padding:8px 16px;font-size:14px;cursor:pointer;background-color:#e0e0e0;border:2px outset #fff}#controls button:active{border:2px inset #fff}.level-btn{background-color:#d0d0d0!important}.level-btn.active{background-color:#a0c0ff!important;border:2px inset #fff!important}#status{margin-bottom:15px;display:flex;gap:30px;justify-content:center;font-weight:700}#game-status{color:#333}#game-status.won{color:green}#game-status.lost{color:red}#board{display:inline-block;border:3px solid #808080;background-color:silver}.row{display:flex}.cell{width:30px;height:30px;border:2px outset #fff;background-color:silver;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;cursor:pointer;-webkit-user-select:none;user-select:none}.cell:hover:not(.revealed):not(.flagged){background-color:#d0d0d0}.cell.revealed{border:1px solid #808080;cursor:default}.cell.mine{background-color:red}.cell.flagged{background-color:silver}.cell.flagged:after{content:"🚩"}.cell.correct-flag{background-color:silver}.cell.correct-flag:after{content:"🚩";filter:hue-rotate(90deg) saturate(2)}.cell[data-count="1"]{color:#00f}.cell[data-count="2"]{color:green}.cell[data-count="3"]{color:red}.cell[data-count="4"]{color:#00008b}.cell[data-count="5"]{color:#8b0000}.cell[data-count="6"]{color:#0ff}.cell[data-count="7"]{color:#000}.cell[data-count="8"]{color:gray}