:root {
  --bg: #0a0e14;
  --panel: #10151f;
  --border: #1e2635;
  --text: #d8e0ee;
  --muted: #6b7688;
  --telegram: #2aabee;
  --stt: #a06bff;
  --tts: #2ec4b6;
  --dar: #f5b942;
  --tool: #4ade80;
  --error: #ef4444;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

header {
  flex-shrink: 0;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--dar);
}

.status {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.status.online { color: var(--tool); border-color: var(--tool); }
.status.offline { color: var(--muted); }

.legend {
  margin-left: auto;
  font-size: 13px;
}
.legend summary {
  cursor: pointer;
  color: var(--muted);
  list-style: none;
}
.legend summary::-webkit-details-marker { display: none; }
.legend[open] summary { color: var(--text); }
.legend-body {
  position: absolute;
  right: 24px;
  margin-top: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  max-width: 420px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 10;
}
.legend-body p {
  margin: 6px 0;
  color: var(--text);
  line-height: 1.4;
}
.legend-body strong { color: var(--dar); }

main {
  flex: 1;
  display: flex;
  min-height: 0;
  overflow: hidden;
}

@media (max-width: 900px) {
  main { flex-direction: column; }
}

.graph-pane {
  flex: 1.6;
  min-width: 0;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  overflow: hidden;
}

#graph {
  width: 100%;
  height: 100%;
  max-height: 82vh;
}

.edge {
  fill: none;
  stroke: var(--border);
  stroke-width: 2;
}

.node-circle {
  fill: var(--panel);
  stroke: var(--muted);
  stroke-width: 1.5;
  transition: stroke 0.2s, fill 0.2s;
}

.node[data-agent="telegram"] .node-circle { stroke: var(--telegram); }
.node[data-agent="stt"] .node-circle { stroke: var(--stt); }
.node[data-agent="tts"] .node-circle { stroke: var(--tts); }
.node[data-agent="dar"] .node-circle { stroke: var(--dar); stroke-width: 2.5; }
.node-tool .node-circle { stroke: var(--tool); }

.node.busy .node-circle {
  filter: url(#glow);
  animation: pulse 1s ease-in-out infinite;
}
.node[data-agent="telegram"].busy .node-circle { fill: var(--telegram); }
.node[data-agent="stt"].busy .node-circle { fill: var(--stt); }
.node[data-agent="tts"].busy .node-circle { fill: var(--tts); }
.node[data-agent="dar"].busy .node-circle { fill: var(--dar); }
.node-tool.busy .node-circle { fill: var(--tool); }

@keyframes pulse {
  0%, 100% { stroke-opacity: 1; }
  50% { stroke-opacity: 0.5; }
}

.node-label {
  fill: var(--text);
  font-size: 13px;
  text-anchor: middle;
  pointer-events: none;
}
.node-dar .node-label { font-size: 18px; font-weight: 600; }
.node-sub {
  fill: var(--muted);
  font-size: 10.5px;
  text-anchor: middle;
  pointer-events: none;
}
.node-count {
  fill: var(--muted);
  font-size: 11px;
  text-anchor: middle;
  pointer-events: none;
}

.packet {
  filter: url(#glow);
}

.feed-pane {
  flex: 1;
  min-width: 320px;
  height: 100%;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
@media (max-width: 900px) {
  .feed-pane { border-left: none; border-top: 1px solid var(--border); height: 45vh; }
}

.feed-pane h2 {
  flex-shrink: 0;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

#feed {
  flex: 1;
  min-height: 0;
  list-style: none;
  margin: 0;
  padding: 8px 12px;
  overflow-y: auto;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12.5px;
}

#feed li {
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.feed-time { color: var(--muted); flex-shrink: 0; }
.feed-agent {
  flex-shrink: 0;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 11px;
}
.feed-body { color: var(--text); word-break: break-word; white-space: pre-wrap; }
.feed-body summary { cursor: pointer; color: var(--muted); }

li[data-agent="telegram"] .feed-agent { background: color-mix(in srgb, var(--telegram) 25%, transparent); color: var(--telegram); }
li[data-agent="stt"] .feed-agent { background: color-mix(in srgb, var(--stt) 25%, transparent); color: var(--stt); }
li[data-agent="tts"] .feed-agent { background: color-mix(in srgb, var(--tts) 25%, transparent); color: var(--tts); }
li[data-agent="dar"] .feed-agent { background: color-mix(in srgb, var(--dar) 25%, transparent); color: var(--dar); }
li.tool .feed-agent { background: color-mix(in srgb, var(--tool) 25%, transparent); color: var(--tool); }
li.error .feed-agent { background: color-mix(in srgb, var(--error) 25%, transparent); color: var(--error); }