: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}}body{font-family:Arial,sans-serif;background-color:#f0f4f8;color:#333;margin:0;display:flex;justify-content:center;align-items:center;min-height:100vh}.quiz-app{background:#fff;padding:30px;border-radius:10px;box-shadow:0 4px 15px #f5f5f51a;width:90%;max-width:600px;text-align:center}.home-container{position:fixed;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:url(https://cdn.pixabay.com/photo/2020/09/23/07/53/question-mark-5595294_1280.jpg) no-repeat center center/cover}.overlay{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#00000080}.home-content{position:relative;z-index:1;color:#e2e2e2;padding:20px;border-radius:10px}.home-content h1{font-size:3rem;margin-bottom:.5rem}.home-content p{font-size:1.2rem;margin-bottom:2rem}.start-button{background-color:#077220;color:#fafafa;border:none;border-radius:8px;padding:15px 30px;font-size:1.2rem;text-decoration:none;cursor:pointer;transition:background-color .3s}.start-button:hover{background-color:#218838}h1{color:#86ff62;margin-bottom:20px}.loading,.error{font-size:1.5rem;color:#ff4500}.quiz-container{display:flex;flex-direction:column;justify-content:center;align-items:center;padding:20px}.progress-bar-container{width:100%;height:10px;background-color:#e0e0e0;border-radius:5px;margin-bottom:10px;overflow:hidden}.progress-bar{height:100%;background-color:#4caf50;transition:width 1s linear}.timer{font-size:1.2rem;font-weight:700;color:#ff4500;margin-bottom:20px}.progress{font-size:1rem;color:#555;margin-bottom:20px}.options{display:grid;gap:10px;margin:20px 0}.option-button{background-color:#e9ecef;border:1px solid #ccc;border-radius:8px;padding:15px;font-size:1rem;cursor:pointer;transition:background-color .3s,border-color .3s}.option-button:hover:not(.selected){background-color:#d1d5db}.option-button.selected{background-color:#007bff;color:#fff;border-color:#007bff}.navigation-buttons{display:flex;justify-content:space-between;margin-top:20px;width:100%}.prev-button,.next-button{padding:12px 24px;border-radius:8px;font-size:1rem;cursor:pointer;border:none}.prev-button{background-color:#6c757d;color:#fff}.next-button{background-color:#007bff;color:#fff}.prev-button:disabled,.next-button:disabled{background-color:#adb5bd;cursor:not-allowed}.results-container{text-align:left}.final-score{font-size:1.5rem;font-weight:700;color:#28a745;text-align:center;margin-bottom:30px}.summary{margin-top:20px;max-height:400px;overflow-y:auto;padding-right:15px}.result-item{margin-bottom:20px;padding-bottom:15px;border-bottom:1px dashed #ccc}.result-item:last-child{border-bottom:none}.question-text{font-weight:700;margin-bottom:5px}.correct-answer{color:#28a745;font-weight:700}.your-answer{color:#6c757d}.your-answer.correct{color:#28a745}.your-answer.incorrect{color:#dc3545}.restart-button{display:block;width:100%;padding:12px 24px;background-color:#007bff;color:#fff;border:none;border-radius:8px;font-size:1rem;cursor:pointer;margin-top:20px}