*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--blue: #2563eb;--blue-dark: #1e3a8a;--blue-mid: #1d4ed8;--blue-light: #dbeafe;--red: #dc2626;--red-light: #fee2e2;--yellow: #ca8a04;--yellow-light: #fef9c3;--gray: #6b7280;--gray-light: #f3f4f6;--border: #e5e7eb;--text: #111827;--text-muted: #6b7280;--radius: 14px;--shadow: 0 2px 8px rgba(0,0,0,.07)}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f0f4ff;color:var(--text);min-height:100dvh}#root{max-width:480px;margin:0 auto;padding:0 16px 40px;min-height:100dvh;display:flex;flex-direction:column}.header{text-align:center;padding:32px 0 20px}.header h1{font-size:2.6rem;font-weight:900;letter-spacing:-1px;color:var(--blue-dark)}.header-user{margin-top:8px}.header-username{color:var(--text-muted);font-size:.85rem}.link-btn{background:none;border:none;padding:0;color:var(--blue-dark);font-size:inherit;cursor:pointer;text-decoration:underline;font-family:inherit}.header-rename{display:inline-flex;gap:6px;align-items:center}.header-rename input{font-size:.85rem;padding:4px 8px;border:1px solid var(--border);border-radius:6px;font-family:inherit;width:130px}.header-rename button{font-size:.8rem;padding:4px 10px;border-radius:6px;border:1px solid var(--border);cursor:pointer;font-family:inherit;background:var(--surface)}.header-rename button[type=submit]{background:var(--blue-dark);color:#fff;border-color:var(--blue-dark)}.header .subtitle{color:var(--text-muted);font-size:.875rem;margin-top:6px;font-weight:500}.card{background:#fff;border-radius:var(--radius);border:1px solid var(--border);padding:20px;box-shadow:var(--shadow)}.username-prompt{display:flex;flex-direction:column;gap:16px;margin-top:16px}.username-prompt h2{font-size:1.4rem;font-weight:800}.username-prompt p{color:var(--text-muted);font-size:.9rem;line-height:1.5}.username-prompt input{width:100%;padding:13px 16px;font-size:1rem;border:2px solid var(--border);border-radius:10px;outline:none;transition:border-color .15s;font-family:inherit}.username-prompt input:focus{border-color:var(--blue)}button{cursor:pointer;font-family:inherit;font-size:1rem;font-weight:700;border:none;border-radius:10px;padding:13px 20px;transition:opacity .15s,transform .1s}button:active{transform:scale(.97)}button:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--blue-mid) 0%,var(--blue) 100%);color:#fff;width:100%;box-shadow:0 2px 10px #2563eb59;letter-spacing:.01em}.btn-primary:hover:not(:disabled){opacity:.92}.btn-secondary{background:var(--gray-light);color:var(--text)}.section-label{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:14px}.question-block{display:flex;flex-direction:column;gap:14px;padding:16px 0;border-bottom:1px solid var(--border)}.question-block:last-child{border-bottom:none}.question-text{font-size:1rem;line-height:1.55;font-weight:500}.question-number{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);margin-bottom:3px}.answer-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px}.answer-btn{padding:14px 10px;border-radius:10px;border:2px solid var(--border);background:#fafafa;font-size:1rem;font-weight:700;color:var(--text);transition:all .15s;letter-spacing:.01em}.answer-btn:hover:not(:disabled):not(.selected-true):not(.selected-false){border-color:var(--blue);background:var(--blue-light);color:var(--blue)}.answer-btn.selected-true{border-color:var(--blue);background:var(--blue);color:#fff;box-shadow:0 2px 10px #2563eb4d}.answer-btn.selected-false{border-color:#374151;background:#374151;color:#fff;box-shadow:0 2px 10px #37415140}.game-sections{display:flex;flex-direction:column;gap:20px}.submit-area{margin-top:4px}.submit-hint{text-align:center;font-size:.85rem;color:var(--text-muted);margin-top:10px}.results{display:flex;flex-direction:column;gap:16px}.score-display{text-align:center;padding:32px 24px}.score-display .score-num{font-size:5.5rem;font-weight:900;color:var(--blue);line-height:1}.score-display .score-label{color:var(--text-muted);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.75rem;margin-top:6px}.score-display .total{font-size:.95rem;margin-top:16px;color:var(--text-muted);display:inline-block;padding:6px 18px;border-radius:99px;background:var(--blue-light)}.score-display .total strong{color:var(--blue-dark)}.share-card{background:#111827;color:#fff;border-radius:var(--radius);padding:20px;font-family:monospace;font-size:.9rem;line-height:1.75;white-space:pre;border:none}.share-actions{display:flex;gap:8px;margin-top:12px}.share-actions button{flex:1}.leaderboard-list{display:flex;flex-direction:column}.leaderboard-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--border);font-size:.95rem}.leaderboard-row:last-child{border-bottom:none}.lb-rank{width:30px;text-align:center;font-size:.85rem;font-weight:800;color:var(--text-muted)}.leaderboard-row:nth-child(1) .lb-rank{color:#f59e0b;font-size:1rem}.leaderboard-row:nth-child(2) .lb-rank{color:#9ca3af;font-size:1rem}.leaderboard-row:nth-child(3) .lb-rank{color:#b45309;font-size:1rem}.lb-name{flex:1;font-weight:600}.lb-name.is-you{color:var(--blue);font-weight:700}.lb-score{font-weight:800;font-variant-numeric:tabular-nums;font-size:1rem}.lb-days{color:var(--text-muted);font-size:.8rem;min-width:36px;text-align:right}.leaderboard-divider{border:none;border-top:2px dashed var(--border);margin:4px 0}.leaderboard-row.is-me{background:color-mix(in srgb,var(--blue) 8%,transparent);border-radius:6px;padding-left:6px;padding-right:6px}.question-result{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}.question-result:last-child{border-bottom:none}.result-icon{font-size:1.1rem;margin-top:1px;flex-shrink:0}.result-text{flex:1;font-size:.9rem}.result-text .q{font-weight:500;line-height:1.45}.result-text .correct-answer{color:var(--text-muted);font-size:.8rem;margin-top:3px}.result-text .true-fact{color:var(--text-muted);font-size:.78rem;margin-top:4px;font-style:italic}.lock-note{color:var(--yellow);font-size:.78rem;margin-top:4px;font-weight:600}.intro-text{font-size:.95rem;line-height:1.6;color:var(--text-muted);text-align:center;padding:4px 8px 8px}.loading{text-align:center;padding:60px 20px;color:var(--text-muted)}.loading-spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--blue);border-radius:50%;animation:spin .7s linear infinite;margin:0 auto 12px}@keyframes spin{to{transform:rotate(360deg)}}.already-played{text-align:center;padding:16px 0}.already-played p{color:var(--text-muted);font-size:.9rem;margin-top:4px}.lock-banner{background:var(--yellow-light);border:1px solid #fde68a;border-radius:10px;padding:10px 14px;font-size:.85rem;color:var(--yellow);font-weight:700}.rest-day-badge{display:inline-block;background:var(--yellow-light);color:var(--yellow);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:3px 10px;border-radius:99px;margin-bottom:10px;border:1px solid #fde68a}@media(max-width:380px){.header h1{font-size:2.1rem}.score-display .score-num{font-size:4.5rem}.answer-btn{padding:12px 8px;font-size:.95rem}}