:root {
  --bg: #0c0f17;
  --bg2: #131826;
  --panel: #161c2e;
  --panel-border: #273150;
  --text: #d8def0;
  --muted: #8896b5;
  --accent: #6ea8ff;
  --gold: #ffcf4d;
  --edge: #46557f;
  --edge-half: #6b5a32;
  --down: #c0414a;
  --green: #3ecf8e;

  /* quorum-index colour ramp */
  --q0: #ffcf4d;  /* committee */
  --q1: #6ea8ff;
  --q2: #b388ff;
  --q3: #6fd0c5;
  --qx: #5a6685;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: radial-gradient(1200px 800px at 70% -10%, #15203a 0%, var(--bg) 55%);
  color: var(--text);
  font: 14px/1.4 ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  overflow: hidden;
}

/* ---------- top bar ---------- */
#topbar {
  display: flex; align-items: center; gap: 18px;
  height: 52px; padding: 0 16px;
  background: linear-gradient(180deg, var(--bg2), rgba(19,24,38,0.6));
  border-bottom: 1px solid var(--panel-border);
  position: relative; z-index: 5;
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand .logo { color: var(--gold); font-size: 18px; }
.brand .title { font-weight: 700; letter-spacing: .3px; }
.brand .subtitle { color: var(--muted); font-size: 12px; }

.chips { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; }
.chip {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 999px; padding: 3px 11px; font-size: 12px; color: var(--muted);
  white-space: nowrap;
}
.chip b { color: var(--text); font-weight: 700; }
.chip.warn { border-color: #6b5a32; color: var(--gold); }
.chip.bad  { border-color: #5e2730; color: #ff8a93; }
.chip.good { border-color: #1f5e44; color: var(--green); }

.controls { display: flex; align-items: center; gap: 8px; }
.ctl { color: var(--muted); font-size: 12px; display: flex; align-items: center; gap: 5px; }
select, button {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--panel-border); border-radius: 7px;
  padding: 5px 9px; font: inherit; font-size: 12px; cursor: pointer;
}
button:hover, select:hover { border-color: var(--accent); }
button:active { transform: translateY(1px); }
.pollstatus { color: var(--muted); font-size: 12px; min-width: 120px; }
.pollstatus.err { color: #ff8a93; }

/* ---------- main / graph ---------- */
main { position: relative; height: calc(100% - 52px); }
#graph { width: 100%; height: 100%; display: block; cursor: grab; }
#graph.dragging { cursor: grabbing; }

.edge { stroke: var(--edge); stroke-width: 1.6; }
.edge.half { stroke: var(--edge-half); stroke-dasharray: 5 4; }
.edge.sel { stroke: var(--accent); stroke-width: 2.6; }

.node { cursor: pointer; }
.node circle.body { stroke: #0a0d14; stroke-width: 2; transition: filter .15s; }
.node.down circle.body { stroke-dasharray: 4 3; opacity: .55; }
/* a committee member we can't reach — bright alert (overrides the faded down look) */
.node.member-down circle.body { stroke: var(--gold); stroke-width: 3.5; stroke-dasharray: none; opacity: 1; filter: drop-shadow(0 0 5px var(--gold)); }
.node.sel circle.body { filter: drop-shadow(0 0 7px var(--accent)); }
.node:hover circle.body { filter: brightness(1.18); }

.node .role { font-weight: 700; font-size: 13px; fill: #0a0d14; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.node.dark-label .role { fill: #eaf0ff; }
.node .height { font-size: 11px; fill: var(--muted); text-anchor: middle; pointer-events: none; }
.node .height.lag { fill: #ff8a93; font-weight: 700; }
.node .idxbadge { font-size: 9px; fill: #0a0d14; text-anchor: middle; dominant-baseline: central; font-weight: 700; pointer-events: none; }

/* ---------- detail panel ---------- */
#detail {
  position: absolute; top: 12px; right: 12px; width: 340px; max-height: calc(100% - 24px);
  overflow-y: auto; background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 12px; padding: 14px 16px; box-shadow: 0 12px 40px rgba(0,0,0,.5);
  z-index: 4;
}
#detail.hidden { display: none; }
#detail-close { position: absolute; top: 10px; right: 10px; padding: 2px 8px; }
#detail h2 { margin: 0 28px 2px 0; font-size: 16px; }
#detail .sub { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
#detail .kv { display: grid; grid-template-columns: 110px 1fr; gap: 3px 8px; font-size: 12px; margin-bottom: 12px; }
#detail .kv .k { color: var(--muted); }
#detail .kv .v { color: var(--text); word-break: break-all; }
#detail .section { font-size: 11px; text-transform: uppercase; letter-spacing: .6px; color: var(--accent); margin: 12px 0 6px; }
#detail .peer { display: flex; justify-content: space-between; gap: 8px; padding: 3px 0; border-bottom: 1px solid rgba(255,255,255,.05); font-size: 12px; }
#detail .peer .dir { color: var(--muted); }
#detail .tag { display: inline-block; background: var(--bg2); border: 1px solid var(--panel-border); border-radius: 5px; padding: 1px 6px; font-size: 11px; }
#detail .err { color: #ff8a93; }
#detail pre { background: var(--bg); border: 1px solid var(--panel-border); border-radius: 8px; padding: 8px; font-size: 11px; overflow-x: auto; max-height: 220px; }

/* ---------- legend ---------- */
#legend {
  position: absolute; left: 12px; bottom: 12px; background: rgba(22,28,46,.85);
  border: 1px solid var(--panel-border); border-radius: 10px; padding: 10px 12px;
  font-size: 11px; color: var(--muted); z-index: 3; backdrop-filter: blur(3px);
}
#legend .legend-title { color: var(--text); font-weight: 700; margin-bottom: 6px; }
#legend hr { border: none; border-top: 1px solid var(--panel-border); margin: 8px 0; }
.legend-row { display: flex; align-items: center; gap: 7px; padding: 1px 0; }
.swatch { width: 13px; height: 13px; border-radius: 50%; border: 2px solid #0a0d14; flex: none; }
.swatch.q0 { background: var(--q0); } .swatch.q1 { background: var(--q1); }
.swatch.q2 { background: var(--q2); } .swatch.q3 { background: var(--q3); }
.swatch.qx { background: var(--qx); } .swatch.down { background: var(--down); border-style: dashed; }
.swatch.member-down { background: var(--down); border-color: var(--gold); box-shadow: 0 0 4px var(--gold); }
.edge-demo { width: 20px; border-top: 2px solid var(--edge); flex: none; }
.edge-demo.half { border-top: 2px dashed var(--edge-half); }
.lag-demo { color: #ff8a93; font-weight: 700; }