*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#faf8ef;color:#776e65;display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}#app{width:100%;max-width:500px}.game-container{position:relative;padding:15px;background:#bbada0;border-radius:6px;margin-top:20px}.game-header{margin-bottom:20px}.title{font-size:48px;font-weight:700;color:#776e65;margin:0}.score-container{display:flex;gap:10px;margin-top:10px}.score-box{background:#bbada0;padding:10px 20px;border-radius:3px;color:#fff;font-weight:700;text-align:center}.score-label{font-size:12px;text-transform:uppercase;opacity:.9}.score-value{font-size:24px;margin-top:5px}.grid-container{position:relative;background:#bbada0;border-radius:6px;width:100%;aspect-ratio:1;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:10px;padding:10px}.grid-cell{background:#eee4da59;border-radius:3px}.tile{position:absolute;width:calc(25% - 12.5px);height:calc(25% - 12.5px);background:#eee4da;border-radius:3px;font-weight:700;display:flex;justify-content:center;align-items:center;font-size:35px;transition:all .15s ease-in-out}.tile-2{background:#eee4da;color:#776e65}.tile-4{background:#ede0c8;color:#776e65}.tile-8{background:#f2b179;color:#f9f6f2}.tile-16{background:#f59563;color:#f9f6f2}.tile-32{background:#f67c5f;color:#f9f6f2}.tile-64{background:#f65e3b;color:#f9f6f2}.tile-128{background:#edcf72;color:#f9f6f2;font-size:30px}.tile-256{background:#edcc61;color:#f9f6f2;font-size:30px}.tile-512{background:#edc850;color:#f9f6f2;font-size:30px}.tile-1024{background:#edc53f;color:#f9f6f2;font-size:25px}.tile-2048{background:#edc22e;color:#f9f6f2;font-size:25px}.game-controls{margin-top:20px;display:flex;gap:10px}.btn{background:#8f7a66;color:#f9f6f2;border:none;border-radius:3px;padding:10px 20px;font-size:16px;font-weight:700;cursor:pointer;transition:background .3s}.btn:hover{background:#9f8a76}.game-over-overlay{position:absolute;inset:0;background:#ffffffe6;display:flex;flex-direction:column;justify-content:center;align-items:center;border-radius:6px}.game-over-text{font-size:48px;font-weight:700;color:#776e65;margin-bottom:20px}.final-score{font-size:24px;color:#776e65;margin-bottom:20px}