:root{--bg:#f5f7fa;--surface:#fff;--ink:#182437;--muted:#626e80;--line:#e2e7ee;--blue:#255ce3;--blue-soft:#edf3ff;--green:#187357;--danger:#b63843;--canvas:#131e2d;--canvas-text:#dce7f6;--canvas-muted:#9dacc0;--path:#6ee7c4;--tree:#709cfb;--link:#62758e;--down:#fb8b96;--radius:12px;--sans:Inter,Segoe UI,Arial,sans-serif;--mono:Consolas,SFMono-Regular,monospace}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 var(--sans)}button,select,input{font:inherit}button,select{cursor:pointer}button{transition:background .16s,color .16s,border-color .16s}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #5c91ff;outline-offset:3px}button svg{width:16px;height:16px}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin:0}.header{height:76px;display:flex;align-items:center;padding:0 max(28px,calc((100vw - 1520px)/2));gap:28px;background:var(--surface);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:750;letter-spacing:-.7px}.brand svg{width:31px;height:31px;fill:var(--surface);stroke:var(--blue);stroke-width:2.5}.brand-light{font-weight:400;color:var(--muted)}.version{font:10px var(--mono);color:var(--blue);background:var(--blue-soft);padding:6px 9px;border-radius:4px;letter-spacing:.6px}.header-link{margin-left:auto;font-size:12px;color:var(--muted)}.header-link span{margin-left:8px}main{max-width:1576px;margin:auto;padding:34px 28px 0}.heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.eyebrow,.panel-kicker{font:10px var(--mono);font-weight:600;letter-spacing:1.7px;color:var(--muted)}.eyebrow{color:var(--blue);margin-bottom:6px}h1{font-size:32px;letter-spacing:-1.1px;font-weight:650;line-height:1.3}.heading p{margin-top:7px;color:var(--muted);font-size:13px}.status{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:600;background:#e9f4ef;color:var(--green);border:1px solid #d2e8dd;border-radius:20px;padding:8px 13px;white-space:nowrap}.status::before{content:"";width:6px;height:6px;background:currentColor;border-radius:100%}.status.pending{background:#fff5e3;color:#885917;border-color:#f0dfc1}.controls{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);padding:13px 16px;border-radius:var(--radius);margin-bottom:18px;flex-wrap:wrap}.topology-control{display:flex;gap:12px;align-items:center}.topology-control label{font:10px var(--mono);color:var(--muted);letter-spacing:1px}.topology-control select{border:0;background:transparent;font-weight:600;padding:8px 25px 8px 5px;max-width:240px}.control-divider{height:23px;width:1px;background:var(--line);margin:0 7px}.control-spacer{flex:1}.button{background:white;border:1px solid #d6dce6;border-radius:7px;min-height:40px;padding:9px 13px;color:var(--ink);font-size:12px;font-weight:600;white-space:nowrap}.button:hover{background:var(--bg);border-color:#adb9c9}.button.primary{background:var(--blue);border-color:var(--blue);color:white}.button.primary:hover{background:#1b49bd}.button span{margin-left:9px}.button[aria-pressed=true]{background:var(--blue-soft);color:var(--blue);border-color:#b6c9f7}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:stretch}.map-panel{min-width:0;background:var(--canvas);border-radius:var(--radius);overflow:hidden;color:var(--canvas-text);display:flex;flex-direction:column}.map-heading{padding:22px 25px 16px;display:flex;justify-content:space-between;gap:15px;align-items:center}.map-heading .panel-kicker{color:var(--canvas-muted)}h2{font-size:17px;font-weight:600;letter-spacing:-.4px;margin-top:4px}.map-button{color:var(--canvas-text);background:transparent;border:1px solid #40516b;border-radius:6px;font-size:11px;padding:8px 10px;white-space:nowrap}.map-button:hover{background:#25354b}.map-filters{display:flex;align-items:center;padding:0 25px;gap:18px;font-size:11px;color:var(--canvas-muted)}.map-filters label{display:flex;align-items:center;gap:5px;color:var(--canvas-text);cursor:pointer}.map-filters input{accent-color:var(--path);margin:0}.map-filters>span{margin-left:auto}.graph-container{flex:1;min-height:430px;display:flex;align-items:center;background-image:radial-gradient(#354053 1px,transparent 1px);background-size:20px 20px;margin-top:12px;overflow:hidden}#graph{width:100%;height:auto;max-height:650px;display:block;min-height:400px}#graph .edge{stroke:var(--link);stroke-width:2;fill:none}#graph .edge.spf{stroke:var(--tree);stroke-width:3}#graph .edge.chosen{stroke:var(--path);stroke-width:4}#graph .edge.down{stroke:var(--down);stroke-dasharray:8 8;opacity:.7}#graph .interface-label{font:12px var(--mono);fill:#bac7da;paint-order:stroke;stroke:var(--canvas);stroke-width:5px;stroke-linejoin:round}#graph .cost-pill{fill:#1d2c40;stroke:#50617a;stroke-width:1}#graph .cost-label{fill:#ebf2ff;font:600 14px var(--mono)}#graph .down-label{fill:var(--down);font:11px var(--sans)}#graph .router{cursor:pointer}#graph .router .shell{fill:#1c2c40;stroke:#6b7d96;stroke-width:2}#graph .router:hover .shell,#graph .router:focus .shell{stroke:white}#graph .router.source .shell{fill:#24407b;stroke:#8cb2ff;stroke-width:2.5}#graph .router.destination .shell{stroke:var(--path);stroke-width:2.5}#graph .router.isolated .shell{fill:#242935;stroke:#778499;stroke-dasharray:5 4}#graph .router-icon{fill:none;stroke:#dce7f6;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}#graph .router-label{font:600 17px var(--sans);fill:white}#graph .router-note{font:11px var(--sans);fill:#b2c3da}#graph .source-note{fill:#9cbdff}#graph .packet{fill:#ffc668;stroke:#ffda8f;stroke-width:2}#graph .packet-label{fill:#ffe2ab;font:12px var(--mono);paint-order:stroke;stroke:var(--canvas);stroke-width:5px}.legend{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;padding:16px 16px 20px;font-size:10px;color:var(--canvas-muted)}.legend>span{display:flex;align-items:center;gap:7px}.legend-line{width:21px;height:0;border-top:2px solid var(--link)}.legend-line.route{border-color:var(--path);border-top-width:3px}.legend-line.tree{border-color:var(--tree)}.legend-line.down{border-color:var(--down);border-top-style:dashed}.map-footer{border-top:1px solid #2a394e;display:flex;justify-content:space-between;gap:10px;padding:13px 22px;color:var(--canvas-muted);font:10px var(--mono)}.small-dot{display:inline-block;width:5px;height:5px;background:var(--path);border-radius:50%;margin-right:5px}.inspector{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-width:0;overflow:hidden}.inspect-heading{padding:22px 21px 14px}.route-selectors{display:flex;align-items:center;gap:12px;padding:0 21px}.route-selectors>div{flex:1;min-width:0}.route-selectors>span{color:var(--muted);margin-top:21px}label{display:block;font-size:11px;font-weight:500;margin-bottom:5px;color:var(--muted)}select,input[type=number]{width:100%;background:white;border:1px solid #d6dce6;border-radius:6px;min-height:39px;padding:8px 10px;color:var(--ink)}.route-summary{margin:17px 21px 16px;padding:15px;background:#f3f6fb;border:1px solid #e5eaf2;border-radius:8px}.route-cost{display:flex;justify-content:space-between;align-items:center}.route-cost>span{font:9px var(--mono);letter-spacing:1px;color:var(--muted)}.route-cost strong{font:600 28px var(--mono);line-height:1.1;color:var(--blue)}.route-path{font:11px/1.7 var(--mono);margin-top:8px;overflow-wrap:anywhere}.route-hops{font-size:10px;margin-top:6px;color:var(--muted)}.tabs{display:flex;gap:0;border-bottom:1px solid var(--line);padding:0 20px}.tabs button{border:0;border-bottom:2px solid transparent;background:white;padding:12px 10px;font-size:12px;color:var(--muted);flex:1}.tabs button[aria-selected=true]{color:var(--blue);border-bottom-color:var(--blue);font-weight:600}.details{height:205px;overflow:auto}.details table{width:100%;border-collapse:collapse;font-size:11px}.details th{position:sticky;top:0;background:#f8fafc;text-align:left;color:var(--muted);font-weight:500;font-size:10px;padding:9px 10px;white-space:nowrap}.details td{padding:8px 10px;border-bottom:1px solid #f0f3f7;font-family:var(--mono)}.details tr.selected td{background:var(--blue-soft)}.details .unreachable{color:#87505c}.details .changed-mark{color:var(--blue);font-size:9px}.details .empty{padding:20px;color:var(--muted);font-size:12px}.details .state-up{color:var(--green)}.details .state-down{color:var(--danger)}.lsa{padding:11px 20px;border-bottom:1px solid var(--line);font-size:11px}.lsa header{display:flex;justify-content:space-between;font-family:var(--mono)}.lsa p{margin-top:4px;font-size:10px;color:var(--muted);overflow-wrap:anywhere}.link-editor{border-top:1px solid var(--line);padding:16px 21px}.link-editor-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.link-editor h3{font-size:12px;font-weight:600}.link-editor-title>span{font-size:9px;color:var(--muted);background:var(--bg);border-radius:4px;padding:3px 6px}.link-editor select{font:10px var(--mono)}.cost-control{display:flex;align-items:flex-end;gap:10px;margin:10px 0}.cost-control>div{flex:1;min-width:0}.cost-control input{font:12px var(--mono);height:39px}.full{width:100%}.button.danger{background:#fff4f4;border-color:#f0d6d9;color:var(--danger)}.button.restore{background:#edf8f3;border-color:#cbe8da;color:var(--green)}.link-editor p{font-size:10px;line-height:1.6;color:var(--muted);margin-top:9px}.timeline{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-top:18px;padding:20px 24px 15px}.timeline-heading{display:flex;justify-content:space-between;align-items:center;gap:15px}.metrics{display:flex;gap:22px;font-size:11px;color:var(--muted)}.metrics strong{font-family:var(--mono);color:var(--ink);margin-right:3px}.simulation-hint{font-size:11px;color:var(--muted);margin-top:10px;padding-bottom:15px;border-bottom:1px solid var(--line)}.events{list-style:none;margin:0;padding:0;max-height:180px;overflow:auto}.events li{display:grid;grid-template-columns:50px 10px 75px minmax(150px,1fr) minmax(100px,1fr);gap:12px;padding:8px 0;border-bottom:1px solid #f1f4f8;font-size:11px;align-items:center}.event-number{font:10px var(--mono);color:var(--muted)}.event-dot{width:5px;height:5px;background:var(--blue);border-radius:50%}.event-dot.routing_changed,.event-dot.lsdb_updated{background:var(--green)}.event-dot.lsa_rejected,.event-dot.link_removed{background:var(--danger)}.event-router{font:11px var(--mono);font-weight:600}.event-info{font:10px var(--mono);color:var(--muted)}.footer{padding:22px 0;display:flex;justify-content:space-between;font:9px var(--mono);letter-spacing:.4px;color:var(--muted)}.error{background:#fff0f1;border:1px solid #edc8cd;color:var(--danger);padding:12px 15px;border-radius:8px;margin-bottom:15px}.error[hidden]{display:none}
@media(min-width:1500px){.workspace{grid-template-columns:minmax(0,1fr) 360px}#graph{min-height:560px}.details{height:225px}}@media(max-width:1100px){main{padding:25px 20px 0}.workspace{grid-template-columns:minmax(0,1fr) 310px}.map-heading{padding:20px}.map-filters{padding:0 20px;gap:12px}.map-filters>span{display:none}.graph-container{min-height:420px}#graph{min-height:360px}.legend{gap:12px}.map-footer{padding:12px}.header{padding:0 20px}.inspector .route-selectors,.inspect-heading{padding-left:16px;padding-right:16px}.route-summary{margin-left:16px;margin-right:16px}.link-editor{padding:15px 16px}}@media(max-width:850px){.workspace{grid-template-columns:1fr}.graph-container{min-height:330px}#graph{min-height:320px}.inspector{display:grid;grid-template-columns:1fr 1fr}.inspect-heading,.route-selectors,.route-summary{grid-column:1}.tabs,.details{grid-column:2}.tabs{grid-row:1;align-self:end}.details{grid-row:2/5;height:290px;border-left:1px solid var(--line)}.link-editor{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}.link-editor-title{grid-column:1/-1;margin:0}.link-editor>label{grid-column:1;margin:0}.link-editor>select{grid-column:1}.cost-control{grid-column:2;grid-row:2/4;margin:0}.link-editor>button{grid-column:1}.link-editor>p{grid-column:2;margin:0}.control-spacer{display:none}.controls{justify-content:flex-end}.topology-control{margin-right:auto}.control-divider{display:none}.heading p{max-width:430px}.metrics{gap:12px}.map-panel .map-filters>span{display:block}.footer{gap:20px}}@media(max-width:540px){.header{height:65px;padding:0 16px;gap:14px}.brand{font-size:17px;gap:8px}.brand svg{width:27px}.version{font-size:8px;letter-spacing:0}.header-link{display:none}main{padding:23px 12px 0}.heading{align-items:flex-start;flex-direction:column;gap:14px;margin-bottom:18px}h1{font-size:28px}.heading p{font-size:12px}.status{font-size:11px;padding:6px 11px}.controls{padding:10px;gap:8px;justify-content:flex-start}.topology-control{width:100%;justify-content:space-between}.topology-control select{max-width:70%}.controls .button{flex:1;padding:8px;font-size:10px;min-height:44px}.controls #reset{flex:initial;width:100%;min-height:34px;text-align:left;border:0;padding:4px;color:var(--muted)}.button span{margin-left:3px}.map-heading{padding:18px 15px 14px}.map-heading h2{font-size:15px}.map-button{font-size:9px;padding:7px}.map-filters{padding:0 15px;font-size:10px}.map-panel .map-filters>span{display:none}.graph-container{min-height:280px;margin-top:10px;overflow:auto}#graph{min-width:580px;min-height:340px}.legend{font-size:9px;gap:10px;padding:13px}.map-footer{font-size:8px;flex-wrap:wrap}.inspector{display:block}.inspect-heading{padding-top:20px}.route-summary{margin-bottom:10px}.details{height:210px;border-left:0}.tabs{padding:0 12px}.tabs button{min-height:44px}.link-editor{display:block;padding:16px}.link-editor-title{margin-bottom:12px}.cost-control{margin:10px 0}.link-editor>p{margin-top:10px}.timeline{padding:18px 15px}.timeline-heading{align-items:flex-start;flex-direction:column;gap:12px}.metrics{gap:18px}.events li{grid-template-columns:34px 5px 42px 1fr;gap:7px;font-size:10px}.events .event-info{display:none}.footer{font-size:8px}.footer>span:last-child{display:none}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

#graph .router-label,#graph .router-note{paint-order:stroke;stroke:var(--canvas);stroke-width:6px;stroke-linejoin:round}