*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #F8FAFC;--surface: #FFFFFF;--text: #1E293B;--text-secondary: #64748B;--border: #E2E8F0;--shadow: 0 2px 12px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--radius: 16px;--radius-sm: 10px;--gold: #F59E0B;--gold-light: #FEF3C7;font-size:17px;font-family:Georgia,Times New Roman,serif;line-height:1.5;color:var(--text);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;background:var(--bg);background-image:radial-gradient(circle at 20% 80%,rgba(16,185,129,.03) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(59,130,246,.03) 0%,transparent 50%)}.app{display:flex;flex-direction:column;min-height:100%;max-width:480px;margin:0 auto;position:relative}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border:none;border-radius:var(--radius-sm);font-weight:700;cursor:pointer;transition:all .15s;font-family:inherit;white-space:nowrap}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;font-size:1.05rem;padding:.9rem 1.8rem;box-shadow:0 4px 14px #2563eb4d}.btn-primary:active{background:linear-gradient(135deg,#1d4ed8,#1e40af)}.btn-secondary{background:var(--surface);color:var(--text);font-size:1rem;padding:.85rem 1.5rem;border:2px solid var(--border);box-shadow:var(--shadow)}.btn-secondary:active{background:var(--bg)}.btn-xl{font-size:1.2rem;padding:1.1rem 2.2rem;border-radius:var(--radius);width:100%}.home-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:2rem 1.5rem;text-align:center;background:linear-gradient(180deg,#FEFCE8 0%,var(--bg) 40%),radial-gradient(circle at 50% 20%,rgba(245,158,11,.08) 0%,transparent 60%)}.home-hero{margin-bottom:2.5rem}.home-portrait{margin-bottom:1.5rem}.portrait-frame{width:120px;height:120px;border-radius:50%;background:linear-gradient(135deg,#f59e0b,#d97706);display:flex;align-items:center;justify-content:center;margin:0 auto;box-shadow:0 8px 30px #f59e0b4d;position:relative}.portrait-frame:before{content:"";position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border-radius:50%;border:3px solid rgba(245,158,11,.2)}.portrait-silhouette{font-size:3.5rem}.home-title{font-size:2rem;font-weight:800;color:var(--text);line-height:1.2;letter-spacing:-.02em}.home-subtitle{font-size:1rem;color:var(--text-secondary);margin-top:.75rem;max-width:320px;margin-left:auto;margin-right:auto;font-style:italic}.pulse-btn{animation:gentlePulse 3s infinite}.home-facts{display:flex;gap:1rem;margin-top:2rem}.fact-card{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:.8rem 1rem;background:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow);font-size:.85rem;font-weight:600;color:var(--text-secondary)}.fact-icon{font-size:1.3rem}.level-select{padding:1.5rem;min-height:100vh;background:var(--bg)}.back-btn{background:none;border:none;font-size:1rem;font-weight:600;color:var(--text-secondary);cursor:pointer;padding:.5rem 0;font-family:inherit}.back-btn:active{color:var(--text)}.page-title{font-size:1.75rem;font-weight:800;color:var(--text);margin-top:.5rem}.page-desc{font-size:.95rem;color:var(--text-secondary);margin-top:.3rem;margin-bottom:1.5rem;font-style:italic}.level-cards{display:flex;flex-direction:column;gap:1rem}.level-card{display:flex;align-items:center;gap:1rem;padding:1.2rem;background:var(--surface);border:2px solid var(--border);border-left:5px solid var(--level-color);border-radius:var(--radius);cursor:pointer;text-align:left;font-family:inherit;transition:all .15s;box-shadow:var(--shadow)}.level-card:active{transform:scale(.99);box-shadow:var(--shadow-lg);border-color:var(--level-color)}.level-icon{font-size:2.5rem;flex-shrink:0}.level-info{flex:1;min-width:0}.level-name{font-size:1.2rem;font-weight:800;color:var(--text)}.level-desc{font-size:.85rem;color:var(--text-secondary);margin-top:.15rem}.level-meta{display:flex;gap:.75rem;margin-top:.4rem;font-size:.8rem;color:var(--level-dark);font-weight:600}.level-status{text-align:right;flex-shrink:0}.level-completed{display:block;font-size:.8rem;font-weight:700;color:#059669}.level-pending{display:block;font-size:.85rem;font-weight:700;color:var(--level-color)}.level-score{display:block;font-size:.75rem;color:var(--text-secondary);margin-top:.15rem}.playing-screen{padding:1rem 1.2rem 2rem;min-height:100vh;display:flex;flex-direction:column}.game-top-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.score-display{display:flex;flex-direction:column;align-items:center}.score-label{font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.score-value{font-size:2rem;font-weight:800;color:var(--level-color);line-height:1}.timer{position:relative;width:56px;height:56px}.timer-ring{width:100%;height:100%;transform:rotate(-90deg)}.timer-text{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:800;color:var(--text);font-family:Courier New,monospace}.timer-low .timer-text{color:#dc2626;animation:timerPulse .5s infinite}.question-card{flex:1;background:var(--surface);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow-lg);border-top:4px solid var(--level-color)}.question-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.question-number{font-size:.85rem;font-weight:700;color:var(--text-secondary)}.question-difficulty{font-size:.75rem;font-weight:700;padding:.25rem .6rem;border-radius:999px;text-transform:uppercase;letter-spacing:.05em}.question-progress{margin-bottom:1.25rem}.progress-bar{width:100%;height:6px;background:var(--border);border-radius:3px;overflow:hidden}.progress-fill{height:100%;border-radius:3px;transition:width .3s ease}.question-text{font-size:1.2rem;font-weight:700;color:var(--text);margin-bottom:1.25rem;line-height:1.4}.options-grid{display:flex;flex-direction:column;gap:.6rem}.option-btn{display:flex;align-items:center;gap:.75rem;width:100%;padding:1rem;background:var(--bg);border:2px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-family:inherit;text-align:left;transition:all .15s}.option-btn:active:not(:disabled){transform:scale(.99)}.option-btn:disabled{cursor:default}.option-letter{width:2rem;height:2rem;border-radius:50%;background:var(--border);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;flex-shrink:0;transition:all .15s}.option-text{flex:1;font-size:.95rem;font-weight:600;color:var(--text)}.option-btn:hover:not(:disabled){border-color:var(--level-color);background:var(--level-light)}.option-btn:hover:not(:disabled) .option-letter{background:var(--level-color);color:#fff}.option-selected{border-color:var(--level-color)!important;background:var(--level-light)!important}.option-selected .option-letter{background:var(--level-color)!important;color:#fff!important}.option-correct{border-color:#059669!important;background:#d1fae5!important}.option-correct .option-letter{background:#059669!important;color:#fff!important}.option-wrong{border-color:#dc2626!important;background:#fee2e2!important}.option-wrong .option-letter{background:#dc2626!important;color:#fff!important}.explanation{margin-top:1.25rem;padding:1rem;border-radius:var(--radius-sm);animation:slideUp .3s ease}.explanation-correct{background:#d1fae5;border:1px solid #A7F3D0}.explanation-wrong{background:#fee2e2;border:1px solid #FECACA}.explanation-header{font-size:1.1rem;font-weight:800;margin-bottom:.4rem}.explanation-text{font-size:.9rem;color:var(--text);line-height:1.5}.next-btn{margin-top:1rem;flex-shrink:0;animation:slideUp .3s ease}.results-screen{padding:2rem 1.5rem;min-height:100vh;text-align:center;background:var(--bg)}.results-header{margin-bottom:2rem}.results-grade{font-size:4rem;font-weight:900;color:var(--level-color);line-height:1;margin-bottom:.5rem;text-shadow:0 4px 12px rgba(0,0,0,.1)}.results-stars{margin-bottom:.75rem}.star{font-size:2.5rem;margin:0 .15rem;transition:all .3s}.star-filled{color:var(--gold);text-shadow:0 2px 8px rgba(245,158,11,.3)}.star-empty{color:#e2e8f0}.results-title{font-size:1.5rem;font-weight:800;color:var(--text);margin-bottom:.3rem}.results-message{font-size:1rem;color:var(--text-secondary);font-style:italic}.results-stats{display:flex;gap:.75rem;margin-bottom:2rem}.stat-card{flex:1;background:var(--surface);border-radius:var(--radius-sm);padding:1rem .5rem;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:.2rem}.stat-value{font-size:1.8rem;font-weight:900;color:var(--level-color);line-height:1}.stat-label{font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.results-answers{margin-bottom:2rem}.results-answers h3{font-size:1rem;font-weight:700;color:var(--text);margin-bottom:.75rem}.review-item{display:inline-flex;align-items:center;gap:.3rem;margin:.2rem;padding:.4rem .7rem;border-radius:999px;font-weight:700;font-size:.85rem}.review-correct{background:#d1fae5;color:#065f46}.review-wrong{background:#fee2e2;color:#991b1b}.review-num{font-size:.75rem}.review-icon{font-size:.9rem}.results-actions{display:flex;flex-direction:column;gap:.75rem}@keyframes gentlePulse{0%,to{transform:scale(1);box-shadow:0 4px 14px #2563eb4d}50%{transform:scale(1.03);box-shadow:0 6px 20px #2563eb66}}@keyframes slideUp{0%{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes timerPulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}@media(max-width:380px){:root{font-size:15px}.home-title{font-size:1.6rem}.question-text{font-size:1.1rem}}@media(min-width:481px){.app{border-left:1px solid var(--border);border-right:1px solid var(--border)}}@media(min-height:800px){.home-screen{padding-top:4rem}}