#game-board{width:340px;height:340px;margin:5rem auto 0;padding:8px;background:#0f0a05e6;border-radius:10px;border:2px solid rgba(139,119,73,.3);box-shadow:0 8px 32px #00000080,inset 0 1px 1px #ffffff0d;position:relative}#game-board.tile-container{position:relative}.cell{position:absolute;border-radius:6px;background:#8b77491f;border:1px solid rgba(139,119,73,.08)}.tile{position:absolute;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:6px;font-family:var(--font-pixel);text-align:center;transition:all .12s ease-in-out}.tile .tile-val{font-size:1.1rem;font-weight:800;text-shadow:0 2px 4px rgba(0,0,0,.4)}.tile .tile-label{font-size:.35rem;opacity:.7;margin-top:2px;letter-spacing:1px}.tile:before{content:"";position:absolute;top:0;left:0;right:0;height:5px;border-radius:6px 6px 0 0;background:#ffffff26}.tile:after{content:"";position:absolute;bottom:0;left:0;right:0;height:4px;border-radius:0 0 6px 6px;background:#00000026}.tile[data-val="2"]{background:#8d6e63;color:#fff;box-shadow:0 3px #6d4c41,0 4px 12px #0000004d}.tile[data-val="4"]{background:#9e9e9e;color:#fff;box-shadow:0 3px #757575,0 4px 12px #0000004d}.tile[data-val="8"]{background:#b0bec5;color:#37474f;box-shadow:0 3px #78909c,0 4px 12px #0000004d}.tile[data-val="16"]{background:#ffb300;color:#fff;box-shadow:0 3px #ff8f00,0 4px 12px #0000004d}.tile[data-val="32"]{background:#fb8c00;color:#fff;box-shadow:0 3px #e65100,0 4px 12px #0000004d}.tile[data-val="64"]{background:#4fc3f7;color:#fff;box-shadow:0 3px #0288d1,0 4px 12px #0000004d}.tile[data-val="128"]{background:#66bb6a;color:#fff;box-shadow:0 3px #388e3c,0 4px 12px #0000004d}.tile[data-val="256"]{background:#37474f;color:#e0e0e0;box-shadow:0 3px #263238,0 4px 12px #0000004d}.tile[data-val="512"]{background:#5d4037;color:#ffccbc;box-shadow:0 3px #3e2723,0 4px 12px #0000004d}.tile[data-val="1024"]{background:#9c27b0;color:#fff;box-shadow:0 3px #6a1b9a,0 4px 16px #9c27b066}.tile[data-val="2048"]{background:#fdd835;color:#333;box-shadow:0 3px #f9a825,0 4px 16px #fdd83566;animation:win-glow 1s ease-in-out infinite}@keyframes tile-pop{0%{transform:scale(0);opacity:0}60%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}@keyframes tile-merge{0%{transform:scale(1)}40%{transform:scale(1.2)}to{transform:scale(1)}}@keyframes win-glow{0%,to{box-shadow:0 3px #f9a825,0 4px 16px #fdd83566}50%{box-shadow:0 3px #f9a825,0 4px 24px #fdd835cc}}.new-tile{animation:tile-pop .25s ease-out}.merged-tile{animation:tile-merge .2s ease-out}.mobile-actions-center{position:absolute;bottom:20px;left:50%;transform:translate(-50%);display:none;gap:10px;z-index:20}.mobile-actions-center.active{display:flex}.action-btn-large{width:60px;height:60px;background:#ffffff26;border:2px solid rgba(255,255,255,.3);border-radius:12px;color:#fff;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .1s;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.action-btn-large:active,.action-btn-large.active{background:#4caf5099;transform:scale(.9)}body.mobile-controls-enabled .mobile-actions-center{display:flex}.loading-screen.hidden{display:none}