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1.5rem;display:flex}.cbt-action-left,.cbt-action-right{flex-wrap:wrap;align-items:center;gap:.65rem;display:flex}.cbt-btn{border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);border:1px solid #0000;align-items:center;gap:.45rem;padding:.55rem 1.25rem;font-size:.88rem;font-weight:700;display:inline-flex}.cbt-btn-review{color:#c084fc;background:#a855f726;border-color:#a855f74d}.cbt-btn-review:hover{color:#d8b4fe;background:#a855f740}.cbt-btn-clear{background:var(--bg-card);color:var(--text-secondary);border-color:var(--border-subtle)}.cbt-btn-clear:hover{background:var(--bg-card-hover);color:var(--text-primary)}.cbt-btn-prev{background:var(--bg-card);color:var(--text-primary);border-color:var(--border-subtle)}.cbt-btn-prev:hover{background:var(--bg-card-hover);border-color:var(--border-glow)}.cbt-btn-savenext{background:var(--accent-gradient);color:#fff;font-weight:700;box-shadow:0 4px 14px #6366f166}.cbt-btn-savenext:hover{transform:translateY(-1px);box-shadow:0 6px 18px #6366f18c}.cbt-btn-submit{color:#fff;background:linear-gradient(135deg,#10b981 0%,#059669 100%);font-weight:700;box-shadow:0 4px 14px #10b98159}.cbt-btn-submit:hover{transform:translateY(-1px);box-shadow:0 6px 18px #10b98180}.cbt-palette-panel{background:var(--bg-secondary);border-left:1px solid var(--border-subtle);width:330px;transition:width var(--transition-normal), transform var(--transition-normal);z-index:30;flex-direction:column;display:flex;position:relative;box-shadow:-4px 0 20px #00000040}.cbt-palette-panel.collapsed{width:0;overflow:hidden;transform:translate(100%)}.cbt-palette-toggle-tab{background:var(--bg-secondary);border:1px solid var(--border-subtle);cursor:pointer;width:22px;height:50px;color:var(--text-secondary);z-index:45;transition:all var(--transition-fast);border-right:none;border-radius:6px 0 0 6px;justify-content:center;align-items:center;display:flex;position:absolute;top:50%;left:-22px;transform:translateY(-50%);box-shadow:-3px 0 8px #00000026}.cbt-palette-toggle-tab:hover{color:var(--text-primary);background:var(--bg-card-hover)}.cbt-legend-box{border-bottom:1px solid var(--border-subtle);background:var(--bg-card);grid-template-columns:1fr 1fr;gap:.5rem;padding:.75rem 1rem;display:grid}.cbt-legend-item{color:var(--text-secondary);align-items:center;gap:.45rem;font-size:.73rem;font-weight:500;line-height:1.2;display:flex}.cbt-legend-item.full-width{grid-column:span 2}.cbt-badge-icon{color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:.72rem;font-weight:700;display:flex;position:relative}.cbt-badge-answered,.cbt-qbtn.answered{clip-path:polygon(0 0,100% 0,100% 75%,50% 100%,0 75%);color:#fff!important;background:#16a34a!important}.cbt-badge-not-answered,.cbt-qbtn.not-answered{clip-path:polygon(0 0,100% 0,100% 75%,50% 100%,0 75%);color:#fff!important;background:#dc2626!important}.cbt-badge-not-visited,.cbt-qbtn.not-visited{border-radius:4px;border:1px solid var(--border-subtle)!important;color:var(--text-secondary)!important;background:#ffffff14!important}[data-theme=light] .cbt-badge-not-visited,[data-theme=light] .cbt-qbtn.not-visited{color:#475569!important;background:#e2e8f0!important}.cbt-badge-marked,.cbt-qbtn.marked{color:#fff!important;clip-path:none!important;background:#7c3aed!important;border-radius:50%!important}.cbt-badge-marked-answered,.cbt-qbtn.marked-answered{position:relative;color:#fff!important;clip-path:none!important;background:#7c3aed!important;border-radius:50%!important}.cbt-badge-marked-answered:after,.cbt-qbtn.marked-answered:after{content:"";background:#22c55e;border:1.5px solid #fff;border-radius:2px;width:8px;height:8px;position:absolute;bottom:0;right:0}.cbt-palette-section-head{background:var(--bg-card-hover);border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:.6rem 1rem;display:flex}.cbt-palette-section-title{color:var(--text-primary);font-size:.82rem;font-weight:700}.cbt-palette-subtext{color:var(--text-muted);font-size:.7rem}.cbt-grid-container{scrollbar-width:thin;flex:1;padding:.85rem;overflow-y:auto}.cbt-palette-grid{grid-template-columns:repeat(4,1fr);gap:.55rem;display:grid}.cbt-qbtn{aspect-ratio:1;cursor:pointer;width:100%;transition:transform var(--transition-fast), box-shadow var(--transition-fast);border:none;outline:none;justify-content:center;align-items:center;font-family:JetBrains Mono,monospace;font-size:.92rem;font-weight:700;display:flex;position:relative}.cbt-qbtn:hover{z-index:5;transform:scale(1.08)}.cbt-qbtn.active-q{z-index:6;transform:scale(1.06);box-shadow:0 0 0 3px #06b6d4,0 0 14px #06b6d4b3}.cbt-palette-footer{border-top:1px solid var(--border-subtle);background:var(--bg-card);flex-direction:column;gap:.65rem;padding:.85rem 1rem;display:flex}.cbt-stats-summary-row{color:var(--text-secondary);justify-content:space-between;font-size:.76rem;display:flex}.cbt-modal-backdrop{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:100;background:#000c;justify-content:center;align-items:center;padding:1.5rem;animation:.2s fadeIn;display:none;position:fixed;inset:0}.cbt-modal-backdrop.open{display:flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.cbt-modal-window{background:var(--bg-secondary);border:1px solid var(--border-glow);border-radius:var(--radius-xl);width:100%;max-width:820px;max-height:88vh;box-shadow:var(--shadow-lg), 0 0 40px #6366f140;flex-direction:column;display:flex;overflow:hidden}.cbt-modal-head{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:1.25rem 1.75rem;display:flex}.cbt-modal-head h2{color:var(--text-primary);align-items:center;gap:.5rem;font-size:1.2rem;font-weight:700;display:flex}.cbt-modal-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;font-size:1.5rem;line-height:1}.cbt-modal-close:hover{color:var(--text-primary)}.cbt-modal-body{color:var(--text-secondary);scrollbar-width:thin;padding:1.75rem;font-size:.94rem;line-height:1.65;overflow-y:auto}.cbt-modal-foot{border-top:1px solid var(--border-subtle);background:#0000001f;justify-content:flex-end;align-items:center;gap:.75rem;padding:1.15rem 1.75rem;display:flex}.cbt-summary-table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.88rem}.cbt-summary-table th,.cbt-summary-table td{border:1px solid var(--border-subtle);text-align:center;padding:.75rem .95rem}.cbt-summary-table th{background:var(--bg-card);color:var(--text-primary);font-weight:700}.cbt-summary-table td:first-child,.cbt-summary-table th:first-child{text-align:left}#scratchCanvas{border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:crosshair;touch-action:none;background:#0f172a}[data-theme=light] #scratchCanvas{background:#fff}.cbt-result-view{background:var(--bg-primary);z-index:90;padding:2.5rem 1.5rem 6rem;display:none;position:fixed;inset:0;overflow-y:auto}.cbt-result-view.active{display:block}.cbt-result-container{max-width:1180px;margin:0 auto}.cbt-result-hero{border:1px solid var(--border-glow);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#6366f129 0%,#8b5cf61f 50%,#0ea5e91f 100%);margin-bottom:2rem;padding:2.5rem;position:relative;overflow:hidden}.cbt-score-display{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.5rem;display:flex}.cbt-score-big{color:#10b981;font-family:JetBrains Mono,monospace;font-size:3.8rem;font-weight:900;line-height:1}.cbt-score-total{color:var(--text-muted);font-size:1.35rem;font-weight:600}.cbt-kpi-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.25rem;margin-bottom:2.5rem;display:grid}.cbt-kpi-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);text-align:center;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:1.5rem}.cbt-kpi-val{margin-bottom:.35rem;font-family:JetBrains Mono,monospace;font-size:2rem;font-weight:900}.cbt-kpi-lbl{color:var(--text-secondary);font-size:.82rem;font-weight:600}.cbt-review-section{margin-top:3rem}.cbt-review-filter-tabs{flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem;display:flex}.cbt-review-tab{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);padding:.45rem 1rem;font-size:.85rem;font-weight:600}.cbt-review-tab.active{background:var(--accent-gradient);color:#fff;border-color:#0000}.cbt-solution-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);margin-bottom:1.5rem;padding:1.75rem}.cbt-solution-card.correct{border-left:4px solid #10b981}.cbt-solution-card.incorrect{border-left:4px solid #ef4444}.cbt-solution-card.skipped{border-left:4px solid #f59e0b}.cbt-sol-expl-box{border-radius:var(--radius-md);background:#6366f114;border:1px solid #6366f140;margin-top:1.15rem;padding:1.15rem;font-size:.94rem;line-height:1.65}@media (max-width:1024px){.cbt-palette-panel{height:100%;position:absolute;top:0;bottom:0;right:0}}@media (max-width:768px){.cbt-topbar{padding:.45rem .75rem}.cbt-title-group h1{font-size:.82rem}.cbt-candidate-roll{display:none}.cbt-bottom-bar{padding:.45rem .75rem}.cbt-btn{padding:.45rem .85rem;font-size:.8rem}}