:root{--amoled-black:#000000;--dark-gray:#121212;--medium-gray:#1f1f1f;--light-gray:#2d2d2d;--accent-color:#bb86fc;--text-color:#f5f5f5;--error-color:#cf6679}*{box-sizing:border-box;margin:0;padding:0;font-family:"Nunito Sans",sans-serif;font-optical-sizing:auto;font-style:normal;font-variation-settings:"wdth" 100,"YTLC" 500}body{background-color:var(--amoled-black);color:var(--text-color);min-height:100vh;display:flex;justify-content:center;align-items:center}#app{width:100%;max-width:800px;padding:20px}#test-container{background-color:var(--dark-gray);border-radius:12px;box-shadow:0 4px 8px rgb(0 0 0 / .3);padding:25px;margin:0 auto}#progress-bar{height:6px;background-color:var(--light-gray);border-radius:3px;margin-bottom:15px;overflow:hidden}#progress-fill{height:100%;background-color:var(--accent-color);width:2.5%;transition:width 0.3s ease}#question-counter{font-size:.9rem;color:rgb(245 245 245 / .7);margin-bottom:20px}#question-text{font-size:1.1rem;line-height:1.5;margin-bottom:25px;font-weight:500;word-wrap:break-word;overflow-wrap:break-word;white-space:pre-line}#options-container{display:flex;flex-direction:column;gap:12px;margin-bottom:25px}.option{background-color:var(--medium-gray);border:1px solid var(--light-gray);border-radius:8px;padding:15px;cursor:pointer;transition:all 0.2s ease;align-items:flex-start;word-wrap:break-word;overflow-wrap:break-word}.option:hover{background-color:var(--light-gray)}.option.selected{background-color:rgb(187 134 252 / .2);border-color:var(--accent-color)}.option-label{font-weight:600;margin-right:10px;color:var(--accent-color);min-width:20px;flex-shrink:0}#navigation-buttons{display:flex;justify-content:space-between;margin-top:20px}.nav-btn{background-color:var(--medium-gray);color:var(--text-color);border:none;border-radius:6px;padding:12px 24px;cursor:pointer;font-size:1rem;transition:background-color 0.2s ease}.nav-btn:hover{background-color:var(--light-gray)}.nav-btn:disabled{opacity:.5;cursor:not-allowed}#score-display{margin-bottom:30px;text-align:center}#score{font-size:1.5rem;margin-top:15px;color:var(--accent-color)}.option-text{flex-grow:1;line-height:1.4}#incorrect-answers{margin-top:30px}.incorrect-item{background-color:var(--medium-gray);border-radius:8px;padding:20px;margin-bottom:15px}.incorrect-question{font-size:1.1rem;margin-bottom:15px;word-wrap:break-word;overflow-wrap:break-word;white-space:pre-line}.incorrect-options{margin-bottom:10px;word-wrap:break-word;overflow-wrap:break-word}.incorrect-option{padding:8px;margin:5px 0;border-radius:4px;align-items:flex-start;word-wrap:break-word;overflow-wrap:break-word}.user-answer{background-color:rgb(207 102 121 / .2)}.correct-answer{background-color:rgb(76 175 80 / .3)}.explanation{margin-top:15px;padding:15px;background-color:var(--light-gray);border-radius:6px;font-size:.95rem;line-height:1.5;white-space:pre-line}#retry-btn{display:block;margin:30px auto 0;padding:12px 36px;background-color:var(--accent-color);color:#000;font-weight:600}