:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.app{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);color:#333;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}#root{max-width:1200px;margin:0 auto;padding:1rem}.back-to-menu{position:fixed;top:20px;left:20px;background:#ffffffe6;border:none;padding:10px 15px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;color:#667eea;transition:all .3s ease;z-index:100}.back-to-menu:hover{background:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.game-menu{text-align:center;padding:2rem;color:#fff}.game-menu h1{font-size:4rem;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3);background:linear-gradient(45deg,gold,#ffed4e);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.game-description{font-size:1.2rem;margin-bottom:3rem;opacity:.9}.game-modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;max-width:1000px;margin:0 auto}.game-mode-card{background:#fffffff2;border-radius:15px;padding:2rem;color:#333;box-shadow:0 8px 32px #0000001a;transition:transform .3s ease,box-shadow .3s ease}.game-mode-card:hover:not(.coming-soon){transform:translateY(-5px);box-shadow:0 12px 40px #0003}.game-mode-card.coming-soon{opacity:.7}.game-mode-card h2{color:#667eea;margin-bottom:1rem;font-size:1.5rem}.game-mode-card p{margin-bottom:1.5rem;line-height:1.6;color:#666}.play-btn{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff;border:none;padding:12px 30px;border-radius:25px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.play-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.play-btn:disabled{background:#ccc;cursor:not-allowed}.greater-lesser-equal{max-width:800px;margin:60px auto 0;padding:2rem;background:#fffffff2;border-radius:20px;box-shadow:0 10px 40px #00000026}.game-header{text-align:center;margin-bottom:2rem}.game-header h1{color:#667eea;margin-bottom:1rem;font-size:2.5rem}.game-stats{display:flex;justify-content:center;gap:2rem;font-weight:600;color:#555}.question-container{text-align:center;margin-bottom:2rem}.fractions-comparison{display:flex;align-items:center;justify-content:center;margin-bottom:2rem;gap:2rem}.fraction{background:#f8f9ff;border:3px solid #667eea;border-radius:15px;padding:1.5rem;min-width:120px}.fraction-display{font-size:2.5rem;font-weight:700;color:#667eea;font-family:Courier New,monospace}.comparison-symbol{font-size:3rem;font-weight:700;color:#764ba2}.answer-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:1.5rem}.answer-btn{background:#fff;border:2px solid #667eea;color:#667eea;padding:15px 25px;border-radius:10px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;min-width:160px}.answer-btn:hover:not(:disabled){background:#667eea;color:#fff;transform:translateY(-2px)}.answer-btn:disabled{cursor:not-allowed}.answer-btn.selected{background:#667eea;color:#fff}.answer-btn.correct{background:#4caf50!important;border-color:#4caf50!important;color:#fff!important}.answer-btn.incorrect{background:#f44336!important;border-color:#f44336!important;color:#fff!important}.feedback{padding:1rem;border-radius:10px;font-weight:600;font-size:1.1rem;margin-bottom:1rem}.feedback.correct{background:#e8f5e8;color:#2e7d32;border:2px solid #4CAF50}.feedback.incorrect{background:#ffeaea;color:#c62828;border:2px solid #f44336}.game-controls{text-align:center;margin-bottom:1.5rem}.restart-btn{background:linear-gradient(45deg,#764ba2,#667eea);color:#fff;border:none;padding:12px 25px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.restart-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.progress-info{text-align:center;color:#666;font-size:.9rem;line-height:1.5}.level-progress{margin-top:1rem}.progress-bar{background:#e0e0e0;border-radius:10px;height:20px;margin:10px 0;overflow:hidden;box-shadow:inset 0 2px 4px #0000001a}.progress-fill{background:linear-gradient(45deg,#667eea,#764ba2);height:100%;border-radius:10px;transition:width .5s ease;box-shadow:0 2px 4px #667eea4d}.progress-text{font-size:.8rem;color:#888;margin:5px 0}.level-hint{font-style:italic;color:#888}.loading{text-align:center;font-size:1.2rem;color:#667eea;padding:2rem}.history-btn{background:linear-gradient(45deg,#28a745,#20c997);color:#fff;border:none;padding:12px 25px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;margin-left:1rem}.history-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #28a74566}.history-btn:disabled{background:#ccc;cursor:not-allowed}.question-history-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.question-history-modal{background:#fff;border-radius:15px;width:100%;max-width:900px;max-height:90vh;overflow:hidden;box-shadow:0 20px 60px #0000004d;display:flex;flex-direction:column}.history-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;background:linear-gradient(45deg,#667eea,#764ba2);color:#fff}.history-header h2{margin:0;font-size:1.8rem}.close-btn{background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;padding:0;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .3s ease}.close-btn:hover{background:#fff3}.history-summary{padding:1.5rem 2rem;background:#f8f9ff;border-bottom:2px solid #e9ecef}.summary-stats{display:flex;gap:2rem;font-weight:600;color:#555;flex-wrap:wrap}.history-list{flex:1;overflow-y:auto;padding:1rem 2rem}.no-history{text-align:center;padding:3rem;color:#666}.no-history p{font-size:1.1rem;margin:0}.history-items{display:flex;flex-direction:column;gap:1rem}.history-item{border:2px solid #e9ecef;border-radius:12px;padding:1.5rem;background:#fff;transition:all .3s ease}.history-item.correct{border-color:#28a745;background:#f8fff9}.history-item.incorrect{border-color:#dc3545;background:#fff8f8}.question-number{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;font-weight:700;color:#333}.level-badge{background:#667eea;color:#fff;padding:4px 12px;border-radius:20px;font-size:.8rem;font-weight:600}.question-display{margin-bottom:1rem}.fraction-comparison{display:flex;align-items:center;justify-content:center;gap:1.5rem;font-size:1.8rem;font-weight:700;color:#667eea;padding:1rem;background:#f8f9ff;border-radius:8px;border:2px solid #667eea}.fraction-comparison .fraction{font-family:Courier New,monospace}.fraction-comparison .comparison{color:#764ba2;font-size:2rem}.answers-section{margin-bottom:1rem}.answer-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;padding:.5rem 0}.answer-row .label{font-weight:600;color:#555}.answer{font-weight:600;padding:4px 12px;border-radius:6px}.correct-answer{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.incorrect-answer{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.question-details{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;color:#666;border-top:1px solid #e9ecef;padding-top:1rem}.points{font-weight:600}.history-actions{padding:1.5rem 2rem;background:#f8f9ff;border-top:2px solid #e9ecef;text-align:center}.close-history-btn{background:linear-gradient(45deg,#6c757d,#5a6268);color:#fff;border:none;padding:12px 30px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.close-history-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6c757d66}.action-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.share-btn{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff;border:none;padding:12px 25px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.share-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.share-section{text-align:center}.share-section h3{color:#667eea;margin-bottom:1.5rem;font-size:1.3rem}.share-inputs{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.5rem;max-width:400px;margin-left:auto;margin-right:auto}.input-group{text-align:left}.input-group label{display:block;margin-bottom:.5rem;font-weight:600;color:#555}.share-input{width:100%;padding:10px 12px;border:2px solid #e9ecef;border-radius:6px;font-size:1rem;transition:border-color .3s ease}.share-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.share-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:1.5rem}.download-btn{background:linear-gradient(45deg,#28a745,#20c997);color:#fff;border:none;padding:12px 20px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;min-width:140px}.download-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #28a74566}.email-btn{background:linear-gradient(45deg,#007bff,#0056b3);color:#fff;border:none;padding:12px 20px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;min-width:140px}.email-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #007bff66}.copy-btn{background:linear-gradient(45deg,#6f42c1,#5a32a3);color:#fff;border:none;padding:12px 20px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;min-width:140px}.copy-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6f42c166}.share-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.back-btn{background:linear-gradient(45deg,#6c757d,#5a6268);color:#fff;border:none;padding:12px 25px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.back-btn:hover,.close-history-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6c757d66}@media (max-width: 768px){.game-menu h1{font-size:3rem}.game-modes{grid-template-columns:1fr}.fractions-comparison{flex-direction:column;gap:1rem}.comparison-symbol{font-size:2rem}.answer-buttons{flex-direction:column;align-items:center}.game-stats{flex-direction:column;gap:.5rem}.greater-lesser-equal{margin-top:80px;padding:1rem}.question-history-overlay{padding:.5rem}.question-history-modal{max-width:100%;max-height:95vh}.history-header{padding:1rem}.history-header h2{font-size:1.4rem}.history-list,.history-item{padding:1rem}.fraction-comparison{flex-direction:column;gap:.5rem;font-size:1.4rem}.summary-stats{flex-direction:column;gap:.5rem}.answer-row{flex-direction:column;align-items:flex-start;gap:.5rem}.game-controls{flex-direction:column;gap:1rem}.history-btn{margin-left:0}}