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rgba(76,175,80,.2)}#submit-location-btn{background:linear-gradient(135deg,#2196f3,#1976d2);color:#fff;box-shadow:0 2px 4px rgba(33,150,243,.2)}#start-game-btn:hover,#submit-location-btn:hover{transform:translateY(-2px);box-shadow:0 4px 8px rgba(0,0,0,.1)}#start-game-btn:disabled,#submit-location-btn:disabled{background:#dee2e6;color:#adb5bd;cursor:not-allowed;transform:none;box-shadow:none}#earth-2048-frame{width:100%;height:100%;border:none}:root{--tile-color-2:#eee4da;--tile-color-4:#ede0c8;--tile-color-8:#f2b179;--tile-color-16:#f59563;--tile-color-32:#f67c5f;--tile-color-64:#f65e3b;--tile-color-128:#edcf72;--tile-color-256:#edcc61;--tile-color-512:#edc850;--tile-color-1024:#edc53f;--tile-color-2048:#edc22e;--text-dark:#776e65;--text-light:#f9f6f2;--background-color:#faf8ef;--board-color:#bbada0;--cell-color:rgba(238, 228, 218, 0.35);--button-color:#8f7a66}.theme-default{--button-color:#8f7a66}.theme-blue{--tile-color-2:#d6eaf8;--tile-color-4:#aed6f1;--tile-color-8:#85c1e9;--tile-color-16:#5dade2;--tile-color-32:#3498db;--tile-color-64:#2980b9;--tile-color-128:#1f6aa1;--tile-color-256:#1a5c8a;--tile-color-512:#154c72;--tile-color-1024:#11405e;--tile-color-2048:#0e3450;--board-color:#7fb3d5;--cell-color:rgba(214, 234, 248, 0.35);--button-color:#2980b9}.theme-green{--tile-color-2:#d5f5e3;--tile-color-4:#abebc6;--tile-color-8:#82e0aa;--tile-color-16:#58d68d;--tile-color-32:#2ecc71;--tile-color-64:#27ae60;--tile-color-128:#229954;--tile-color-256:#1e8449;--tile-color-512:#196f3d;--tile-color-1024:#145a32;--tile-color-2048:#0e3e21;--board-color:#7dcea0;--cell-color:rgba(213, 245, 227, 0.35);--button-color:#27ae60}.theme-purple{--tile-color-2:#ebdef0;--tile-color-4:#d7bde2;--tile-color-8:#c39bd3;--tile-color-16:#af7ac5;--tile-color-32:#9b59b6;--tile-color-64:#8e44ad;--tile-color-128:#7d3c98;--tile-color-256:#6c3483;--tile-color-512:#5b2c6f;--tile-color-1024:#4a235a;--tile-color-2048:#391a45;--board-color:#bb8fce;--cell-color:rgba(235, 222, 240, 0.35);--button-color:#8e44ad}#earth-2048-container{width:100%;max-width:400px;aspect-ratio:1;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:10px;background-color:var(--board-color);padding:10px;border-radius:6px;margin:0 auto}.cell{background-color:var(--cell-color);border-radius:3px;display:flex;justify-content:center;align-items:center;font-size:24px;font-weight:700;transition:background-color .3s}.tile{display:flex;flex-direction:column;justify-content:center;align-items:center;border-radius:3px;font-weight:700;transition:.2s ease-in-out;width:100%;height:100%}.tile 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h3{color:var(--text-dark);font-size:18px;margin-bottom:15px;padding-bottom:8px;border-bottom:2px solid rgba(238,228,218,.5)}.settings-option{display:flex;justify-content:space-between;align-items:center;padding:15px;background:rgba(238,228,218,.35);border-radius:10px;margin-bottom:15px;transition:.3s}.settings-option:hover{background:rgba(238,228,218,.5)}.settings-option label{color:var(--text-dark);font-size:16px;display:flex;align-items:center;gap:10px}.theme-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:15px;margin-top:20px}.theme-option{background:rgba(238,228,218,.35);border:2px solid transparent;border-radius:12px;padding:15px;cursor:pointer;transition:.3s;display:flex;flex-direction:column;align-items:center;gap:12px}.theme-option:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.1)}.theme-option.active{border-color:var(--button-color);background:rgba(238,228,218,.5)}.theme-preview{width:70px;height:70px;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.1);transition:.3s}.theme-option:hover .theme-preview{transform:scale(1.05)}.theme-option span:last-child{color:var(--text-dark);font-size:14px;font-weight:500}.game-instructions{background:rgba(238,228,218,.35);border-radius:12px;padding:20px;margin-top:20px}.game-instructions h4{color:var(--text-dark);margin:0 0 15px;font-size:18px}.game-instructions p{color:var(--text-dark);margin:0 0 10px;line-height:1.6;font-size:14px}.game-instructions ul{list-style-type:none;padding:0;margin:10px 0}.game-instructions li{color:var(--text-dark);margin:8px 0;padding-left:20px;position:relative;font-size:14px}.game-instructions li:before{content:"•";position:absolute;left:0;color:var(--button-color)}.switch{position:relative;display:inline-block;width:52px;height:26px}.switch input{opacity:0;width:0;height:0}.switch .slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;transition:.4s;border-radius:26px}.switch .slider:before{position:absolute;content:"";height:20px;width:20px;left:3px;bottom:3px;background-color:#fff;transition:.4s;border-radius:50%}.switch input:checked+.slider{background-color:var(--button-color)}.switch input:checked+.slider:before{transform:translateX(26px)}.earth-2048-info{margin-top:30px;padding:20px;background:rgba(238,228,218,.35);border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.05)}.earth-2048-info h3{color:var(--text-dark);margin-bottom:15px;font-size:18px;text-align:center}.earth-2048-info p{color:var(--text-dark);line-height:1.8;font-size:14px;text-align:justify;margin:0}.settings-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);backdrop-filter:blur(3px);z-index:999;display:none}@media (max-width:768px){#earth-2048-game,.earth-2048-header{padding:10px}.score-box{min-width:80px;padding:5px 10px}.score-label{font-size:12px}.score-box span:last-child{font-size:16px}.game-button{width:35px;height:35px;font-size:16px}.score-row{grid-template-columns:repeat(2,1fr)}.score-row:last-child{grid-template-columns:1fr}.score-row span{font-size:12px}}#save-progress-btn{background:var(--button-color);color:#fff;border:none;border-radius:4px;padding:8px 12px;cursor:pointer;transition:opacity .3s;display:flex;align-items:center;justify-content:center}#save-progress-btn:hover{opacity:.8}#save-progress-btn i{font-size:18px}