:root{--bg: #090e18;--surface: #0f1623;--border: rgba(148, 163, 184, .1);--accent: #38bdf8;--accent2: #818cf8;--text: #e2e8f0;--muted: #64748b;--radius: 10px;color-scheme:dark}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;min-height:100%}html,body{overflow:hidden;overscroll-behavior:none}body{font-family:DM Sans,system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:13px;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;text-size-adjust:100%;-webkit-text-size-adjust:100%}#root{isolation:isolate}button,input,textarea{font:inherit}.app-root{display:flex;flex-direction:row;width:100%;height:100dvh;min-height:100vh;overflow:hidden;background:radial-gradient(circle at 20% 5%,rgba(56,189,248,.08),transparent 30%),radial-gradient(circle at 80% 92%,rgba(30,41,59,.55),transparent 30%),var(--bg)}.sidebar{width:320px;min-width:250px;flex-shrink:0;display:flex;flex-direction:column;height:100%;min-height:0;overflow:hidden;background:linear-gradient(180deg,#0f1623fa,#0a101efa);border-right:1px solid var(--border)}.sidebar-header{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 14px 10px;border-bottom:1px solid var(--border)}.sidebar-header-content{min-width:0}.sidebar-label{font-size:11px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.08em}.sidebar-value{font-size:11px;color:var(--muted);margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-refresh-btn{flex-shrink:0}.refresh-icon{display:inline-block}.refresh-icon.is-spinning{animation:spin .8s linear infinite}.graph-container{flex:1 1 0;min-height:0;position:relative;overflow:hidden}.sidebar-section{flex-shrink:0;padding:11px 14px;border-top:1px solid var(--border)}.sidebar-system-title{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}.sidebar-info-row{display:flex;justify-content:space-between;align-items:center;padding:2px 0}.sidebar-info-key{color:var(--muted);font-size:11px}.sidebar-info-value{font-size:11px;font-weight:500}.sidebar-toggle-btn{margin-top:8px;width:100%;padding:4px 0;font-size:11px;justify-content:center}.sidebar-config-panel{margin-top:8px;display:flex;flex-direction:column;gap:6px;animation:fadeIn .15s ease}.config-apply-btn{padding:5px 0;font-size:11px;justify-content:center}.chat-panel{flex:1 1 0;min-width:0;min-height:0;display:flex;flex-direction:column;height:100%;overflow:hidden}.header{flex-shrink:0;display:flex;align-items:center;gap:10px;padding:12px 20px;border-bottom:1px solid 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22px;display:flex;flex-direction:column;gap:14px}.class-insights-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.class-insights-title{font-size:15px;font-weight:600;color:#e2e8f0}.class-insights-subtitle{font-size:11px;color:#94a3b8;margin-top:2px}.class-insights-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.class-insights-card{border:1px solid rgba(148,163,184,.14);border-radius:10px;background:#0f1623bf;padding:10px}.class-insights-card-label{font-size:10px;color:#64748b;text-transform:uppercase;letter-spacing:.06em}.class-insights-card-value{margin-top:5px;font-size:20px;font-weight:600;color:#cbd5e1}.class-insights-section{border:1px solid rgba(148,163,184,.14);border-radius:10px;background:#0f162399;padding:10px}.class-insights-section-title{font-size:12px;font-weight:600;color:#cbd5e1;margin-bottom:8px}.class-insights-table-wrap{overflow:auto;border:1px solid rgba(148,163,184,.1);border-radius:8px}.class-insights-table{width:100%;border-collapse:collapse;font-size:11px}.class-insights-table th{text-align:left;padding:8px 10px;color:#64748b;background:#090e18e6;position:sticky;top:0}.class-insights-table td{padding:8px 10px;color:#cbd5e1;border-top:1px solid rgba(148,163,184,.1);vertical-align:top;line-height:1.45}.class-insights-student-id{font-size:10px;color:#64748b}.class-insights-empty{font-size:11px;color:#94a3b8}.class-insights-state{height:100%;display:flex;align-items:center;justify-content:center;gap:10px;color:#94a3b8;font-size:12px;flex-direction:column}.class-insights-state-error{color:#fda4af}.suggested-prompts{flex-shrink:0;display:flex;flex-wrap:wrap;gap:6px;padding:8px 24px 12px;border-top:1px solid var(--border)}.btn-pill{background:#38bdf80f;border:1px solid rgba(56,189,248,.14);border-radius:20px;color:var(--accent);font-size:11.5px;padding:5px 12px;cursor:pointer;transition:background .15s,border-color .15s}.btn-pill:hover{background:#38bdf821;border-color:#38bdf847}.input-container{flex-shrink:0;padding:12px 20px 16px;border-top:1px solid var(--border);background:#090e18eb}.input-wrapper{display:flex;align-items:flex-end;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:8px 10px 8px 14px;transition:border-color .15s,box-shadow .15s}.input-wrapper:focus-within{border-color:#38bdf84d;box-shadow:0 0 0 2px #38bdf814}.input-textarea{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:14px;line-height:1.5;resize:none;min-height:22px;max-height:140px;overflow-y:auto}.input-textarea::placeholder{color:var(--muted)}.input-textarea:disabled{opacity:.5;cursor:not-allowed}.input-send-btn{width:30px;height:30px;border-radius:7px;background:var(--accent);border:none;color:#090e18;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:opacity .15s,transform 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var(--border);color:var(--text);border-top-left-radius:3px}.message-bubble.user{background:#818cf81a;border:1px solid rgba(129,140,248,.18);color:var(--text);border-top-right-radius:3px}.typing-indicator{display:flex;align-items:center;gap:4px;padding:2px 0}.typing-dot{width:6px;height:6px;border-radius:50%;background:var(--muted);display:inline-block;animation:blink 1.2s var(--blink-delay, 0s) infinite}.input-cfg{background:var(--bg);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:12px;padding:6px 9px;outline:none;width:100%}.input-cfg:focus{border-color:#38bdf84d}.btn-base{display:inline-flex;align-items:center;gap:5px;border-radius:6px;font-size:11.5px;cursor:pointer;padding:5px 10px;transition:background .15s,opacity .15s;border:none}.btn-base:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{background:#38bdf814;color:var(--accent);border:1px solid rgba(56,189,248,.18)}.btn-secondary:hover:not(:disabled){background:#38bdf826}.btn-ghost{background:transparent;color:var(--muted);border:1px solid transparent}.btn-ghost:hover:not(:disabled){background:#ffffff0a;color:var(--text)}.spinner-small{width:14px;height:14px;border:2px solid rgba(56,189,248,.15);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.graph-controls{position:absolute;bottom:10px;right:10px;display:flex;flex-direction:column;gap:2px;z-index:20}.graph-ctrl-btn{width:26px;height:26px;background:#090e18e6;border:1px solid rgba(148,163,184,.12);border-radius:5px;color:#64748b;font-size:14px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:color .15s,border-color 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.15s}.ndp-close:hover{color:#e2e8f0}.ndp-body{display:flex;align-items:center;gap:14px;margin-bottom:12px}.ndp-ring{flex-shrink:0}.ndp-stats{display:flex;flex-direction:column;gap:5px;min-width:0;flex:1}.ndp-stat-row{display:flex;justify-content:space-between;align-items:center}.ndp-stat-key{font-size:10px;color:var(--muted)}.ndp-stat-val{font-size:11px;font-weight:500;color:#94a3b8;font-family:DM Mono,monospace}.ndp-actions{display:flex;flex-direction:column;gap:5px}.ndp-subtopic-card{border:1px solid rgba(148,163,184,.14);border-radius:8px;padding:10px;background:#0f172a8c;margin-bottom:4px}.ndp-subtopic-title{font-size:11px;font-weight:600;color:#cbd5e1;margin-bottom:6px}.ndp-subtopic-note{font-size:10px;color:#64748b;line-height:1.45}.ndp-subtopic-empty{font-size:10.5px;color:#94a3b8;padding:8px 0}.ndp-subtopic-table-wrap{max-height:220px;overflow:auto;border:1px solid rgba(148,163,184,.12);border-radius:6px;margin-top:6px}.ndp-subtopic-table{width:100%;border-collapse:collapse;font-size:10px}.ndp-subtopic-table th{text-align:left;padding:6px 8px;color:#64748b;background:#0f172ad9;position:sticky;top:0;z-index:1}.ndp-subtopic-table td{padding:6px 8px;color:#cbd5e1;border-top:1px solid rgba(148,163,184,.1);vertical-align:middle}.ndp-subtopic-table tr.is-active td{background:#38bdf814}.ndp-subtopic-pick{width:100%;text-align:left;background:transparent;color:inherit;border:none;cursor:pointer;font-size:10.5px;line-height:1.35;padding:0}.ndp-subtopic-pick:hover{color:#7dd3fc}.ndp-subtopic-badge{display:inline-block;border-radius:999px;border:1px solid;padding:1px 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#38bdf8);font-weight:500}.ndp-btn-primary:hover{opacity:.8}.ndp-btn-secondary{background:#818cf812;border-color:#818cf833;color:#818cf8}.ndp-btn-secondary:hover{background:#818cf81f}.ndp-btn-ghost{background:transparent;border-color:#94a3b81a;color:#64748b}.ndp-btn-ghost:hover{background:#94a3b80d;color:#94a3b8}@media(max-width:1200px){.sidebar{width:290px}}@media(max-width:960px){.app-root{flex-direction:column}.sidebar{width:100%;min-width:0;height:42dvh;border-right:none;border-bottom:1px solid var(--border)}.chat-panel{height:auto;flex:1}.message-bubble{max-width:88%}.class-insights-summary{grid-template-columns:1fr}}@media(max-width:640px){.header,.input-container,.messages-container,.suggested-prompts{padding-left:14px;padding-right:14px}.input-textarea,.input-cfg{font-size:16px}.header-status{max-width:150px}.graph-hint{font-size:8.5px}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes blink{0%,80%,to{opacity:.2;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{transform:translateY(16px);opacity:0}to{transform:translateY(0);opacity:1}}.thinking-box{margin:10px 12px;padding:10px 12px;border-radius:12px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08)}.thinking-label{font-size:12px;opacity:.9;margin-bottom:6px}.thinking-details{font-size:12px;opacity:.75;display:grid;gap:4px}.thinking-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}