@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&family=Prompt:wght@300;400;500;600&display=swap";:root{--bg-color:#0f172a;--panel-bg:#1e293bb3;--panel-border:#ffffff1a;--text-main:#f8fafc;--text-muted:#94a3b8;--primary-color:#3b82f6;--primary-hover:#2563eb;--secondary-color:#475569;--secondary-hover:#334155;--success:#10b981;--danger:#ef4444;--option-bg:#33415599;--option-hover:#475569cc}*{box-sizing:border-box;margin:0;padding:0}body{background:radial-gradient(circle at top right, #1e293b, var(--bg-color));color:var(--text-main);justify-content:center;align-items:center;min-height:100vh;font-family:Prompt,Inter,sans-serif;display:flex}#root{width:100%}.container{justify-content:center;align-items:center;width:100%;min-height:100vh;padding:1rem;display:flex}.glass-panel{background:var(--panel-bg);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);text-align:center;border-radius:24px;width:100%;max-width:500px;padding:2.5rem;animation:.5s ease-out forwards fadeIn;box-shadow:0 25px 50px -12px #00000080}.glass-panel.large-panel{text-align:left;max-width:800px}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}h1{background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:1rem;font-size:2rem}h2{margin-bottom:1.5rem;font-size:1.5rem;font-weight:600;line-height:1.4}p{color:var(--text-muted);margin-bottom:2rem;line-height:1.6}.primary-btn,.secondary-btn{cursor:pointer;border:none;border-radius:12px;padding:.875rem 1.5rem;font-size:1rem;font-weight:600;transition:all .3s}.primary-btn{background-color:var(--primary-color);color:#fff;box-shadow:0 4px 14px #3b82f663}.primary-btn:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-2px)}.primary-btn:disabled{opacity:.5;cursor:not-allowed}.secondary-btn{background-color:var(--secondary-color);color:#fff}.secondary-btn:hover{background-color:var(--secondary-hover)}.pulse{animation:2s infinite pulse}@keyframes pulse{0%{box-shadow:0 0 #3b82f6b3}70%{box-shadow:0 0 0 15px #3b82f600}to{box-shadow:0 0 #3b82f600}}.progress-bar{background-color:var(--option-bg);border-radius:4px;width:100%;height:6px;margin-bottom:2rem;overflow:hidden}.progress-fill{background:linear-gradient(90deg,#3b82f6,#8b5cf6);height:100%;transition:width .4s}.quiz-header{color:var(--text-muted);justify-content:space-between;align-items:center;margin-bottom:1rem;font-size:.875rem;display:flex}.badge{color:#c4b5fd;background-color:#8b5cf633;border-radius:999px;padding:.25rem .75rem;font-size:.75rem;font-weight:600}.options-container{flex-direction:column;gap:1rem;margin-bottom:2rem;display:flex}.option-btn{background-color:var(--option-bg);color:var(--text-main);text-align:left;cursor:pointer;border:1px solid #0000;border-radius:12px;padding:1.25rem 1.5rem;font-size:1.1rem;line-height:1.6;transition:all .2s}.option-btn:hover{background-color:var(--option-hover);border-color:var(--panel-border)}.option-btn.selected{border-color:var(--primary-color);background-color:#3b82f626}.quiz-footer{justify-content:flex-end;display:flex}.score-circle{background:conic-gradient(#10b981 var(--score-deg,0%), var(--option-bg) 0);border-radius:50%;justify-content:center;align-items:center;width:150px;height:150px;margin:0 auto 2rem;display:flex;position:relative}.score-circle:before{content:"";background-color:var(--panel-bg);border-radius:50%;position:absolute;inset:10px}.score-circle span{color:var(--text-main);font-size:2.5rem;font-weight:700;position:relative}.button-group{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex}.mb-2{margin-bottom:2rem}.review-list{flex-direction:column;gap:1.5rem;max-height:60vh;padding-right:1rem;display:flex;overflow-y:auto}.review-list::-webkit-scrollbar{width:8px}.review-list::-webkit-scrollbar-track{background:var(--option-bg);border-radius:4px}.review-list::-webkit-scrollbar-thumb{background:var(--secondary-color);border-radius:4px}.review-item{background-color:var(--option-bg);border:1px solid var(--panel-border);border-radius:12px;padding:1.5rem}.review-item h3{color:var(--text-muted);margin-bottom:.5rem;font-size:1rem}.review-item .q-text{color:var(--text-main);margin-bottom:1rem;font-weight:600}.your-answer,.correct-answer{border-radius:8px;margin-top:.5rem;padding:.75rem;font-size:.9rem}.your-answer.wrong{color:#fca5a5;background-color:#ef44441a;border:1px solid #ef444433}.correct-answer{color:#6ee7b7;background-color:#10b9811a;border:1px solid #10b98133}.quiz-layout{gap:2rem;width:100%;max-width:1200px;display:flex}.nav-panel{flex:0 0 300px;max-height:80vh;overflow-y:auto}.question-panel{flex:1}.nav-grid{grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:8px;margin-top:1rem;display:grid}.nav-btn{aspect-ratio:1;border:1px solid var(--panel-border);background-color:var(--option-bg);width:100%;color:var(--text-main);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;font-size:.85rem;font-weight:600;transition:all .2s;display:flex}.nav-btn:hover{background-color:var(--option-hover)}.nav-btn.active{border-color:var(--primary-color);box-shadow:0 0 0 2px var(--primary-color)}.nav-btn.answered{background-color:var(--primary-color);color:#fff}.nav-btn.correct{background-color:var(--success);color:#fff;border-color:var(--success)}.nav-btn.incorrect{background-color:var(--danger);color:#fff;border-color:var(--danger)}.feedback-box{border-radius:12px;margin-top:2rem;padding:1.5rem;animation:.3s fadeIn}.feedback-box.correct{background-color:#10b9811a;border:1px solid #10b9814d}.feedback-box.incorrect{background-color:#ef44441a;border:1px solid #ef44444d}.feedback-header{align-items:center;gap:.5rem;margin-bottom:1rem;font-size:1.25rem;font-weight:700;display:flex}.feedback-box.correct .feedback-header{color:var(--success)}.feedback-box.incorrect .feedback-header{color:var(--danger)}.explanation{white-space:pre-wrap;background-color:#0f172a80;border-radius:8px;margin-top:1rem;padding:1rem;line-height:1.6}.explanation-loading{color:var(--text-muted);align-items:center;gap:.5rem;margin-top:1rem;display:flex}.spinner{border:2px solid var(--panel-border);border-top-color:var(--primary-color);border-radius:50%;width:20px;height:20px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.api-key-input{border:1px solid var(--panel-border);width:100%;color:var(--text-main);background-color:#0f172a99;border-radius:12px;margin-bottom:1rem;padding:.875rem 1rem;font-family:inherit}.api-key-input:focus{border-color:var(--primary-color);outline:none}.question-text{margin-bottom:2rem;font-size:1.4rem;line-height:1.6}@media (width<=768px){.quiz-layout{flex-direction:column;gap:1rem}.nav-panel{flex:none;width:100%;max-height:35vh}.question-panel{flex:none;width:100%}.container{padding:.5rem}.glass-panel{padding:1.5rem}.question-text{margin-bottom:1.5rem;font-size:1.15rem}.option-btn{padding:1rem;font-size:.95rem}.quiz-header{flex-direction:column;align-items:flex-start;gap:.5rem}.quiz-header>div{align-self:flex-end}}