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.15s}.tab:hover{color:var(--text-secondary)}.tab.active{color:var(--text-primary);border-bottom-color:var(--accent)}.tab-content{flex:1;display:none;overflow-y:auto}.tab-content.active{display:block}.brief-section{border-bottom:1px solid var(--border);padding:16px 20px}.brief-meta{gap:8px;margin-bottom:12px;display:flex}.badge{text-transform:uppercase;letter-spacing:.03em;border-radius:4px;padding:3px 10px;font-size:11px;font-weight:600}.badge.category{color:var(--accent-hover);background:#6366f126}.badge.difficulty{color:#4ade80;background:#22c55e1f}.badge.new-badge{color:#fbbf24;background:#f59e0b26;border:1px solid #f59e0b4d;animation:2s ease-in-out infinite new-pulse}@keyframes new-pulse{0%,to{opacity:1}50%{opacity:.7}}.description{color:var(--text-secondary);font-size:14px;line-height:1.6}.brief-section h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:12px;font-size:13px;font-weight:600}.brief-section ul{flex-direction:column;gap:8px;list-style:none;display:flex}.brief-section ul li{color:var(--text-secondary);padding-left:18px;font-size:13px;line-height:1.5;position:relative}.brief-section ul li:before{content:"→";color:var(--accent);position:absolute;left:0}.hint-toggle{background:var(--bg-tertiary);border:1px solid var(--border);width:100%;color:var(--text-muted);cursor:pointer;text-align:left;border-radius:6px;margin-bottom:6px;padding:10px 14px;font-size:13px;transition:color .15s,border-color .15s;display:block}.hint-toggle:hover{color:var(--text-secondary);border-color:var(--text-muted)}.hint-toggle.revealed{color:var(--text-secondary);background:var(--bg-primary);cursor:default}.flag-section{border-bottom:none}.flag-input-row{gap:8px;display:flex}#flag-input{background:var(--bg-primary);border:1px solid var(--border);color:var(--text-primary);border-radius:6px;flex:1;padding:10px 12px;font-family:Cascadia Code,Fira Code,monospace;font-size:14px}#flag-input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #6366f126}#flag-submit{background:var(--accent);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:6px;padding:10px 20px;font-size:13px;font-weight:600;transition:background .15s}#flag-submit:hover{background:var(--accent-hover)}#flag-feedback{min-height:20px;margin-top:10px;font-size:13px}#flag-feedback.success{color:var(--success)}#flag-feedback.error{color:var(--error)}#log-panel{padding:12px 16px;font-family:Cascadia Code,Fira Code,monospace;font-size:12px;line-height:1.7}.log-entry{color:var(--text-muted);word-break:break-all}.log-entry.info{color:var(--success)}.log-entry.warn{color:var(--warning)}.log-entry.error{color:var(--error)}#success-overlay{z-index:100;background:#000c;justify-content:center;align-items:center;animation:.3s fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.success-card{background:var(--bg-secondary);border:1px solid var(--border);text-align:center;border-radius:12px;max-width:500px;padding:40px}.success-card h2{color:var(--success);margin-bottom:12px;font-size:24px}.success-card p{color:var(--text-secondary);margin-bottom:8px;font-size:14px;line-height:1.6}.success-card .flag-display{color:var(--accent-hover);background:var(--bg-primary);word-break:break-all;border-radius:6px;margin:16px 0;padding:10px 16px;font-family:Cascadia Code,Fira Code,monospace;font-size:14px}.next-lab-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;margin-top:20px;padding:10px 28px;font-size:14px;font-weight:600;transition:background .15s}.next-lab-btn:hover{background:var(--accent-hover)}.feedback-widget{background:var(--bg-primary);border:1px solid var(--border);text-align:center;border-radius:8px;margin:20px 0 8px;padding:20px}.feedback-prompt{color:var(--text-secondary);margin-bottom:10px;font-size:13px}.star-rating{gap:4px;margin-bottom:12px;display:inline-flex}.star-rating .star{color:var(--border);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:28px;line-height:1;transition:color .1s,transform .1s}.star-rating .star:hover,.star-rating .star.hovered{color:#fbbf24;transform:scale(1.15)}.star-rating .star.selected{color:#fbbf24}.feedback-comment{background:var(--bg-secondary);border:1px solid var(--border);width:100%;color:var(--text-primary);resize:vertical;border-radius:6px;margin-bottom:10px;padding:8px 12px;font-family:inherit;font-size:13px;display:block}.feedback-comment:focus{border-color:var(--accent);outline:none}.feedback-submit-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:8px 20px;font-size:13px;font-weight:600;transition:background .15s,opacity .15s}.feedback-submit-btn:hover:not(:disabled){background:var(--accent-hover)}.feedback-submit-btn:disabled{opacity:.5;cursor:not-allowed}.feedback-status{color:var(--error);min-height:16px;margin-top:8px;font-size:12px}.feedback-done{color:var(--success);padding:8px 0;font-size:13px}.card-rating{align-items:center;gap:6px;margin-top:-4px;display:flex}.star-display{font-size:14px;line-height:1}.star-display.filled{color:#fbbf24}.star-display.half{color:#fbbf24;opacity:.6}.star-display.empty{color:var(--border)}.rating-text{color:var(--text-muted);margin-left:2px;font-size:12px}