:root{--bg-primary:#0a1628;--bg-secondary:#112240;--bg-card:#1a2f4e;--accent:#0077b6;--accent-light:#00b4d8;--coral:#ff6b6b;--success:#2ecc71;--warning:#f39c12;--danger:#e74c3c;--text-primary:#e6f1ff;--text-secondary:#8892b0;--text-muted:#5a6a8a;--radius:12px;--radius-sm:8px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{background:var(--bg-primary);height:100%;color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif}.app{max-width:500px;min-height:100%;padding:env(safe-area-inset-top) 16px env(safe-area-inset-bottom);flex-direction:column;margin:0 auto;display:flex}.screen{flex-direction:column;flex:1;padding-bottom:24px;display:flex}.btn{border-radius:var(--radius-sm);cursor:pointer;touch-action:manipulation;border:none;padding:12px 24px;font-size:16px;font-weight:600;transition:opacity .2s,transform .1s}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--text-muted)}.btn-hint{color:var(--warning);border:1px solid var(--warning);background:0 0;padding:8px 16px;font-size:14px}.btn-full{width:100%}.btn-back{color:var(--accent-light);cursor:pointer;background:0 0;border:none;padding:8px 0;font-size:16px}.home-header{text-align:center;padding:32px 0 16px}.home-header h1{background:linear-gradient(135deg, var(--accent-light), var(--coral));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:28px}.home-subtitle{color:var(--text-secondary);margin-top:8px;font-size:14px}.stats-card{background:var(--bg-secondary);border-radius:var(--radius);justify-content:center;gap:32px;margin-bottom:16px;padding:16px;display:flex}.stat{flex-direction:column;align-items:center;display:flex}.stat-value{color:var(--accent-light);font-size:24px;font-weight:700}.stat-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:12px}.quiz-all-btn{margin-bottom:20px;padding:16px;font-size:18px}.category-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px;display:grid}.category-card{background:var(--bg-card);border-radius:var(--radius);text-align:center;cursor:pointer;color:var(--text-primary);border:1px solid #ffffff0f;padding:16px 12px;font-size:14px;font-weight:500;transition:border-color .2s}.category-card:active{border-color:var(--accent)}.quiz-header{justify-content:space-between;align-items:center;padding:8px 0;display:flex}.quiz-progress{color:var(--text-secondary);font-size:14px;font-weight:600}.quiz-score{color:var(--accent-light);font-size:14px;font-weight:600}.quiz-progress-bar{background:var(--bg-card);border-radius:2px;height:3px;margin-bottom:16px;overflow:hidden}.quiz-progress-fill{background:linear-gradient(90deg, var(--accent), var(--accent-light));border-radius:2px;height:100%;transition:width .3s}.image-viewer{border-radius:var(--radius);margin-bottom:16px;overflow:hidden}.image-scroll{scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:8px;display:flex;overflow-x:auto}.image-scroll::-webkit-scrollbar{display:none}.image-slide{scroll-snap-align:center;flex:0 0 100%}.image-slide img{border-radius:var(--radius);background:var(--bg-secondary);width:100%;height:auto;display:block}.quiz-question-area{flex-direction:column;flex:1;display:flex}.question-form{flex-direction:column;gap:12px;display:flex}.question-prompt{color:var(--text-primary);font-size:18px;font-weight:600}.input-field{background:var(--bg-secondary);border:1px solid var(--text-muted);border-radius:var(--radius-sm);color:var(--text-primary);outline:none;width:100%;padding:14px 16px;font-family:inherit;font-size:16px;transition:border-color .2s}.input-field:focus{border-color:var(--accent)}.textarea-field{resize:vertical;min-height:80px}.question-actions{gap:12px;display:flex}.question-actions .btn{flex:1}.hint-section{align-items:center;gap:12px;display:flex}.hint-display{color:var(--warning);letter-spacing:2px;flex:1;font-family:monospace;font-size:18px}.answer-result{border-radius:var(--radius-sm);align-items:center;gap:8px;padding:10px 14px;font-size:14px;display:flex}.result-exact{color:var(--success);background:#2ecc7126}.result-close{color:var(--warning);background:#f39c1226}.result-wrong{color:var(--danger);background:#e74c3c26}.result-icon{font-size:18px;font-weight:700}.correct-answer{margin-left:auto;font-size:13px}.phase-result-inline{flex-direction:column;gap:4px;margin-bottom:12px;display:flex}.entry-result{background:var(--bg-secondary);border-radius:var(--radius);padding:20px}.entry-result h3{margin-bottom:12px;font-size:20px}.result-row{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.result-badge{border-radius:20px;padding:4px 10px;font-size:13px;font-weight:600}.badge-exact{color:var(--success);background:#2ecc7133}.badge-close{color:var(--warning);background:#f39c1233}.badge-wrong{color:var(--danger);background:#e74c3c33}.badge-bonus{color:var(--accent-light);background:#00b4d833}.badge-hint{color:var(--warning);background:#f39c1233}.entry-details{margin-bottom:16px}.detail-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-top:8px;font-size:12px}.detail-value{color:var(--text-primary);margin-top:2px;font-weight:500}.entry-details ul{margin-top:4px;padding-left:20px}.entry-details li{color:var(--text-secondary);margin-bottom:2px;font-size:14px}.results-header{text-align:center;padding:32px 0}.results-grade{background:linear-gradient(135deg, var(--accent-light), var(--coral));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:64px;font-weight:800}.results-score{margin-top:4px;font-size:24px;font-weight:600}.results-percentage{color:var(--text-secondary);font-size:16px}.results-breakdown{background:var(--bg-secondary);border-radius:var(--radius);margin-bottom:20px;padding:16px}.breakdown-item{justify-content:space-between;padding:8px 0;font-size:14px;display:flex}.breakdown-item+.breakdown-item{border-top:1px solid #ffffff0f}.results-entries{flex-direction:column;gap:8px;margin-bottom:20px;display:flex}.result-entry{background:var(--bg-secondary);border-radius:var(--radius-sm);cursor:pointer;border-left:3px solid #0000;padding:12px 16px}.entry-correct{border-left-color:var(--success)}.entry-wrong{border-left-color:var(--danger)}.result-entry-header{align-items:center;gap:8px;display:flex}.result-entry-icon{font-weight:700}.entry-correct .result-entry-icon{color:var(--success)}.entry-wrong .result-entry-icon{color:var(--danger)}.result-entry-name{flex:1;font-weight:500}.result-entry-points{color:var(--text-secondary);font-size:13px}.result-entry-detail{border-top:1px solid #ffffff0f;margin-top:12px;padding-top:12px}.result-entry-detail p{margin-top:8px;font-size:14px}.result-entry-detail ul{margin-top:4px;padding-left:20px}.result-entry-detail li{color:var(--text-secondary);font-size:13px}.results-actions{flex-direction:column;gap:12px;display:flex}.study-header{align-items:center;gap:16px;padding:8px 0 16px;display:flex}.study-header h2{font-size:20px}.study-category{margin-bottom:8px}.study-category-header{background:var(--bg-secondary);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);cursor:pointer;border:none;align-items:center;padding:14px 16px;font-size:15px;font-weight:600;display:flex}.study-count{background:var(--bg-card);color:var(--text-secondary);border-radius:10px;margin-left:auto;padding:2px 8px;font-size:12px}.study-chevron{color:var(--text-muted);margin-left:8px}.study-entries{padding:4px 0 4px 12px}.study-entry{margin-top:4px}.study-entry-header{background:var(--bg-card);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);text-align:left;cursor:pointer;border:none;padding:12px 16px;font-size:14px;display:block}.study-entry-detail{background:var(--bg-primary);border-radius:var(--radius-sm);border:1px solid #ffffff0f;margin-top:4px;padding:16px}.study-info{margin-top:12px}.study-info ul{margin-top:4px;padding-left:20px}.study-info li{color:var(--text-secondary);margin-bottom:2px;font-size:14px}.install-screen{text-align:center;justify-content:center;align-items:center;padding-top:48px}.install-header{margin-bottom:32px}.install-icon{margin-bottom:12px;font-size:64px}.install-header h1{background:linear-gradient(135deg, var(--accent-light), var(--coral));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:28px}.install-subtitle{color:var(--text-secondary);margin-top:8px;font-size:14px}.install-card{background:var(--bg-secondary);border-radius:var(--radius);text-align:left;width:100%;margin-bottom:24px;padding:24px}.install-card h2{margin-bottom:8px;font-size:18px}.install-desc{color:var(--text-secondary);margin-bottom:20px;font-size:14px;line-height:1.5}.install-steps{flex-direction:column;gap:16px;display:flex}.install-step{align-items:center;gap:12px;font-size:15px;line-height:1.4;display:flex}.step-number{background:var(--accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;font-weight:700;display:flex}.step-icon{color:var(--accent-light);flex-shrink:0;margin-left:auto}.install-warning{border-radius:var(--radius-sm);color:var(--warning);background:#f39c121f;border:1px solid #f39c124d;padding:14px 16px;font-size:14px;line-height:1.5}.install-url{background:var(--bg-primary);border-radius:var(--radius-sm);padding:10px 14px;overflow-x:auto}.install-url code{color:var(--accent-light);word-break:break-all;font-size:13px}.install-skip{margin-top:auto}