body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}:root{--primary-color:#4caf50;--secondary-color:#2196f3;--accent-color:#ff9800;--error-color:#f44336;--success-color:#4caf50;--info-color:#2196f3;--background-color:#f5f5f5;--box-shadow:0 4px 8px #0000001a;--border-radius:12px}.App{align-items:center;background-color:#f5f5f5;background-color:var(--background-color);display:flex;flex-direction:column;font-family:Comic Sans MS,Chalkboard SE,Arial,sans-serif;min-height:100vh;padding:20px;text-align:center}.game-header{background-color:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 4px 8px #0000001a;box-shadow:var(--box-shadow);margin-bottom:20px;max-width:800px;padding:15px;width:100%}.game-header h1{color:#4caf50;color:var(--primary-color);font-size:2.5rem;margin:0 0 15px}.level-indicator{align-items:center;display:flex;flex-direction:column;margin-top:10px}.level-indicator span{color:#2196f3;color:var(--secondary-color);font-size:1.5rem;font-weight:700;margin-bottom:5px}.progress-bar{background-color:#e0e0e0;border-radius:10px;height:20px;overflow:hidden;width:100%}.progress{background-color:#ff9800;background-color:var(--accent-color);height:100%;transition:width .5s ease-in-out}.game-container{background-color:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 4px 8px #0000001a;box-shadow:var(--box-shadow);margin-bottom:20px;max-width:800px;padding:30px;width:100%}.score-board{display:flex;font-size:1.5rem;justify-content:space-between;margin-bottom:30px}.score,.streak{background-color:#f0f0f0;border-radius:12px;border-radius:var(--border-radius);font-weight:700;padding:10px 20px}.score{color:#4caf50;color:var(--primary-color)}.streak{color:#2196f3;color:var(--secondary-color)}.question-container{background-color:#f9f9f9;border-radius:12px;border-radius:var(--border-radius);margin:30px 0;padding:20px}.equation{flex-wrap:wrap;font-size:3rem;gap:15px}.box,.equation{align-items:center;display:flex;justify-content:center}.box{background-color:#fff;border:3px solid #4caf50;border:3px solid var(--primary-color);border-radius:12px;border-radius:var(--border-radius);box-shadow:0 4px 8px #0000001a;box-shadow:var(--box-shadow);height:80px;width:80px}.box,.operator{font-weight:700}.operator{color:#2196f3;color:var(--secondary-color);font-size:3rem}.hidden{animation:pulse 1.5s infinite;background-color:#ff9800;background-color:var(--accent-color);color:#fff}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.input-container{align-items:center;display:flex;flex-direction:column;gap:15px;margin:20px 0}.answer-input{border:2px solid #ddd;border-radius:12px;border-radius:var(--border-radius);font-family:inherit;font-size:1.5rem;padding:15px;text-align:center;width:150px}.answer-input:focus{border-color:#2196f3;border-color:var(--secondary-color);box-shadow:0 0 0 3px #2196f34d;outline:none}.button-group{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.submit-button{background-color:#4caf50;background-color:var(--primary-color);border:none;border-radius:12px;border-radius:var(--border-radius);color:#fff;cursor:pointer;font-family:inherit;font-size:1.5rem;padding:15px 30px;transition:background-color .3s}.submit-button:hover{background-color:#388e3c}.show-answer-button{background-color:#ff9800;background-color:var(--accent-color);border:none;border-radius:12px;border-radius:var(--border-radius);color:#fff;cursor:pointer;font-family:inherit;font-size:1.5rem;padding:15px 30px;transition:background-color .3s}.show-answer-button:hover{background-color:#e68a00}.feedback{animation:fadeIn .5s;border-radius:12px;border-radius:var(--border-radius);font-size:1.5rem;font-weight:700;margin:20px 0;padding:15px}.success{background-color:#4caf5033;color:#4caf50;color:var(--success-color)}.error{background-color:#f4433633;color:#f44336;color:var(--error-color)}.info{background-color:#2196f333;color:#2196f3;color:var(--info-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.celebration{animation:popIn .5s;background-color:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 10px 25px #0003;left:50%;padding:30px;position:fixed;text-align:center;top:50%;transform:translate(-50%,-50%);z-index:100}.celebration h2{color:#ff9800;color:var(--accent-color);font-size:2rem;margin-top:0}.celebration p{color:#2196f3;color:var(--secondary-color);font-size:1.5rem}@keyframes popIn{0%{opacity:0;transform:translate(-50%,-50%) scale(.8)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}.game-footer{color:#666;font-size:1rem;margin-top:auto;padding:20px}.menu-container{background-color:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 4px 8px #0000001a;box-shadow:var(--box-shadow);margin:50px auto;max-width:800px;padding:30px;text-align:center}.menu-container h1{color:#4caf50;color:var(--primary-color);font-size:3rem;margin-bottom:40px}.menu-buttons{display:flex;flex-direction:column;gap:20px;margin:0 auto;max-width:400px}.menu-button{background-color:#2196f3;background-color:var(--secondary-color);border:none;border-radius:12px;border-radius:var(--border-radius);color:#fff;cursor:pointer;font-family:inherit;font-size:1.8rem;padding:20px;transition:all .3s}.menu-button:hover{background-color:#1976d2;box-shadow:0 6px 12px #00000026;transform:translateY(-3px)}.exam-settings,.practice-settings{background-color:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 4px 8px #0000001a;box-shadow:var(--box-shadow);margin:30px 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auto;padding:15px;text-align:center;width:200px}.exam-buttons,.practice-buttons{display:flex;justify-content:space-between;margin-top:40px}.back-button{background-color:#f0f0f0;border:none;border-radius:12px;border-radius:var(--border-radius);cursor:pointer;font-family:inherit;font-size:1.2rem;padding:15px 30px;transition:background-color .3s}.back-button:hover{background-color:#e0e0e0}.back-button.small{font-size:1rem;margin-top:10px;padding:8px 15px}.start-button{background-color:#4caf50;background-color:var(--primary-color);border:none;border-radius:12px;border-radius:var(--border-radius);color:#fff;cursor:pointer;font-family:inherit;font-size:1.2rem;padding:15px 30px;transition:background-color .3s}.start-button:hover{background-color:#388e3c}.exam-info{align-items:center;display:flex;justify-content:space-between;margin-top:10px;width:100%}.exam-progress{display:flex;flex:1 1;flex-direction:column;margin-right:20px}.exam-progress span{color:#2196f3;color:var(--secondary-color);font-size:1.2rem;font-weight:700;margin-bottom:5px}.exam-timer{align-items:center;display:flex;flex-direction:column}.exam-timer span{color:#ff9800;color:var(--accent-color);font-size:1.2rem;font-weight:700;margin-bottom:5px}.exam-controls{display:flex;justify-content:space-between;margin-top:15px;width:100%}.submit-exam-button{background-color:#ff9800;background-color:var(--accent-color);border:none;border-radius:12px;border-radius:var(--border-radius);color:#fff;cursor:pointer;font-family:inherit;font-size:1rem;padding:8px 15px;transition:background-color .3s}.submit-exam-button:hover{background-color:#e68a00}.exam-result{background-color:#fff;border-radius:12px;border-radius:var(--border-radius);box-shadow:0 4px 8px #0000001a;box-shadow:var(--box-shadow);margin:30px auto;max-width:800px;padding:30px}.exam-result h1{color:#4caf50;color:var(--primary-color);margin-bottom:30px;text-align:center}.result-summary{margin-bottom:40px;text-align:center}.result-score{color:#2196f3;color:var(--secondary-color);font-size:3rem;font-weight:700;margin-bottom:10px}.score-number{color:#4caf50;color:var(--primary-color)}.score-divider{color:#666;margin:0 5px}.result-percentage{color:#ff9800;color:var(--accent-color);font-size:2.5rem;font-weight:700;margin-bottom:20px}.result-message{color:#333;font-size:1.5rem}.result-details{margin-top:40px}.result-details h2{color:#2196f3;color:var(--secondary-color);font-size:1.5rem;margin-bottom:20px;text-align:center}.question-list{display:flex;flex-direction:column;gap:15px}.question-item{align-items:center;background-color:#f9f9f9;border-radius:12px;border-radius:var(--border-radius);display:flex;flex-wrap:wrap;gap:15px;padding:15px}.question-item.correct{border-left:5px solid #4caf50;border-left:5px solid var(--success-color)}.question-item.incorrect{border-left:5px solid #f44336;border-left:5px solid var(--error-color)}.question-number{align-items:center;background-color:#2196f3;background-color:var(--secondary-color);border-radius:50%;color:#fff;display:flex;font-weight:700;height:30px;justify-content:center;width:30px}.question-text{flex:1 1;font-size:1.2rem;font-weight:700}.question-answer{display:flex;flex:2 1;flex-direction:column;gap:5px}.question-result{font-size:1.5rem}.result-buttons{display:flex;gap:20px;justify-content:center;margin-top:40px}.retry-button{background-color:#ff9800;background-color:var(--accent-color);border:none;border-radius:12px;border-radius:var(--border-radius);color:#fff;cursor:pointer;font-family:inherit;font-size:1.2rem;padding:15px 30px;transition:background-color .3s}.retry-button:hover{background-color:#e68a00}@media (max-width:768px){.equation{font-size:2rem}.box{height:60px;width:60px}.game-header h1,.operator{font-size:2rem}.score-board{font-size:1.2rem}.answer-input,.show-answer-button,.submit-button{font-size:1.2rem;padding:10px}.menu-container h1{font-size:2.5rem}.menu-button{font-size:1.5rem;padding:15px}.difficulty-buttons,.question-item{flex-direction:column}.question-item{align-items:flex-start}.question-answer,.question-result,.question-text{width:100%}}
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