:root {
  --bg: #0f1115;
  --topbar-bg: #14171d;
  --rail-bg: #11141a;
  --panel-bg: #181b22;
  --panel-border: #252934;
  --input-bg: #0c0f14;
  --secondary-bg: #2a2f3b;
  --canvas-bg:
    radial-gradient(circle at 20% 12%, rgba(76, 139, 245, 0.10), transparent 24%),
    radial-gradient(circle at 82% 76%, rgba(77, 190, 203, 0.08), transparent 26%),
    linear-gradient(180deg, #090c12 0%, #0c1017 100%);
  --status-bg: rgba(0, 0, 0, 0.6);
  --tooltip-bg: #1c2029;
  --tooltip-border: #2f3543;
  --pre-bg: #0c0f14;
  --chip-bg: #242a36;
  --chip-border: #303747;
  --chip-text: #d7dce8;
  --row-border: rgba(255, 255, 255, 0.055);
  --code-text: #dfe4ee;
  --text: #e6e8ee;
  --text-muted: #8a93a6;
  --accent: #4c8bf5;
  --highlight-user: #ffd24a;
  --highlight-agent: #ff7a59;
  --danger: #e26464;
}

body[data-theme="day"] {
  --bg: #f3f6fb;
  --topbar-bg: #ffffff;
  --rail-bg: #edf1f7;
  --panel-bg: #ffffff;
  --panel-border: #d8dee9;
  --input-bg: #f8fafc;
  --secondary-bg: #e5ebf3;
  --canvas-bg:
    radial-gradient(circle at 18% 10%, rgba(76, 139, 245, 0.10), transparent 24%),
    radial-gradient(circle at 84% 78%, rgba(0, 150, 136, 0.08), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, #eef3f9 100%);
  --status-bg: rgba(255, 255, 255, 0.86);
  --tooltip-bg: #ffffff;
  --tooltip-border: #cfd7e5;
  --pre-bg: #f8fafc;
  --chip-bg: #eef3fa;
  --chip-border: #d4dcea;
  --chip-text: #263244;
  --row-border: rgba(15, 23, 42, 0.08);
  --code-text: #172033;
  --text: #172033;
  --text-muted: #617085;
  --accent: #2563eb;
  --highlight-user: #b77900;
  --highlight-agent: #d24b2f;
  --danger: #c83e3e;
}

* { box-sizing: border-box; }

html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--panel-border);
}
.topbar .title { font-weight: 600; letter-spacing: 0.3px; }
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.stats {
  color: var(--text-muted);
  font-size: 12px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.theme-switch {
  cursor: pointer;
  flex: 0 0 auto;
  user-select: none;
}
.theme-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.theme-switch-track {
  align-items: center;
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  color: var(--text-muted);
  display: grid;
  font-size: 11px;
  grid-template-columns: 1fr 1fr;
  height: 28px;
  overflow: hidden;
  padding: 2px;
  position: relative;
  width: 104px;
}
.theme-switch-track::before {
  background: var(--accent);
  border-radius: 999px;
  content: "";
  height: calc(100% - 4px);
  left: 2px;
  position: absolute;
  top: 2px;
  transition: transform 140ms ease;
  width: calc(50% - 2px);
}
.theme-switch-track span {
  color: inherit;
  position: relative;
  text-align: center;
  z-index: 1;
}
.theme-switch input:not(:checked) + .theme-switch-track span:first-child,
.theme-switch input:checked + .theme-switch-track span:last-child {
  color: #ffffff;
}
.theme-switch input:checked + .theme-switch-track::before {
  transform: translateX(100%);
}

.layout {
  flex: 1;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr) 360px;
  min-height: 0;
}

.sidebar, .inspector {
  overflow-y: auto;
  padding: 12px;
  background: var(--rail-bg);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sidebar { border-right: 1px solid var(--panel-border); }
.inspector {
  border-left: 1px solid var(--panel-border);
  gap: 12px;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 12px;
}
.panel h3 {
  margin: 0 0 8px 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
}
.panel-disabled { opacity: 0.6; }

.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
.field label { font-size: 11px; color: var(--text-muted); }
.field input, .field select, .field textarea {
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 6px 8px;
  font: inherit;
  max-width: 100%;
  min-width: 0;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 72px; font-family: ui-monospace, monospace; font-size: 12px; }
.row { display: flex; gap: 8px; }
.row > .field { flex: 1 1 0; min-width: 0; }
.button-row { display: flex; gap: 8px; align-items: center; }

button {
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 4px;
  padding: 6px 10px;
  cursor: pointer;
  font: inherit;
}
button.secondary {
  background: var(--secondary-bg);
  color: var(--text);
}
button:hover { filter: brightness(1.1); }
button:disabled,
.field input:disabled,
.field select:disabled,
.field textarea:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.muted { color: var(--text-muted); font-size: 12px; }

.agent-actions {
  align-items: flex-end;
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}
.agent-status {
  margin-top: 2px;
}
.agent-results {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
  max-height: 360px;
  overflow: auto;
  padding-right: 2px;
}
.agent-result {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 8px;
}
.agent-result-head {
  align-items: center;
  display: grid;
  gap: 6px;
  grid-template-columns: 20px minmax(0, 1fr) auto;
}
.agent-rank {
  align-items: center;
  background: var(--accent);
  border-radius: 999px;
  color: #ffffff;
  display: inline-flex;
  font-size: 10px;
  height: 18px;
  justify-content: center;
  width: 18px;
}
.agent-node-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 650;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.agent-node-type {
  color: var(--text-muted);
  font-size: 11px;
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.agent-score,
.agent-terms {
  color: var(--text-muted);
  font-size: 11px;
  margin-top: 5px;
}
.agent-snippet {
  color: var(--text);
  font-size: 12px;
  line-height: 1.4;
  margin-top: 6px;
  overflow-wrap: anywhere;
}
.agent-step-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.step-button {
  background: var(--secondary-bg);
  color: var(--text);
  font-size: 12px;
  padding: 5px 8px;
}
.step-button.active {
  background: var(--highlight-agent);
  color: #ffffff;
}
.agent-reasoning {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  margin-top: 10px;
  max-height: 340px;
  overflow: auto;
  padding: 9px;
}
.reasoning-title {
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 6px;
}
.reasoning-windows {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr;
}
.reasoning-window {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  min-height: 76px;
  overflow: hidden;
}
.reasoning-window-title {
  background: var(--secondary-bg);
  border-bottom: 1px solid var(--panel-border);
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
  padding: 5px 7px;
  text-transform: uppercase;
}
.reasoning-text {
  color: var(--text);
  font-size: 12px;
  line-height: 1.45;
  max-height: 130px;
  overflow: auto;
  padding: 7px;
  white-space: pre-wrap;
  word-break: break-word;
}
.reasoning-meta {
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  font-size: 11px;
  margin-top: 8px;
}
.reasoning-ids {
  color: var(--text-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.35;
  margin-top: 7px;
  overflow-wrap: anywhere;
}

.legend-list { display: flex; flex-direction: column; gap: 4px; max-height: 280px; overflow-y: auto; }
.legend-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px;
}
.legend-swatch {
  width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0;
}
.legend-section-label {
  font-size: 11px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-top: 8px;
}
.legend-section-label:first-child { margin-top: 0; }

.canvas-wrap {
  position: relative;
  min-height: 0;
}
#cy {
  width: 100%;
  height: 100%;
  background: var(--canvas-bg);
}
.status-msg {
  position: absolute;
  bottom: 8px;
  left: 8px;
  background: var(--status-bg);
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  pointer-events: none;
}

.tooltip {
  position: fixed;
  pointer-events: none;
  background: var(--tooltip-bg);
  border: 1px solid var(--tooltip-border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 12px;
  max-width: 360px;
  max-height: 320px;
  overflow: auto;
  z-index: 9999;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
}
.tooltip .tt-header {
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--accent);
}
.tooltip .tt-row { margin-bottom: 2px; line-height: 1.35; }
.tooltip .tt-key { color: var(--text-muted); margin-right: 6px; }
.tooltip pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 4px 0 0 0;
  background: var(--pre-bg);
  padding: 4px 6px;
  border-radius: 3px;
  max-height: 160px;
  overflow: auto;
}

.details-panel {
  flex: 1 1 auto;
  min-height: 260px;
  overflow: hidden;
}
.detail-empty {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.45;
}
.detail-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--panel-border);
  margin-bottom: 10px;
}
.detail-kind {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.detail-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 18px;
  font-weight: 650;
  margin-top: 2px;
}
.detail-type {
  align-self: flex-start;
  background: var(--chip-bg);
  border: 1px solid var(--chip-border);
  border-radius: 999px;
  color: var(--chip-text);
  font-size: 11px;
  max-width: 150px;
  overflow-wrap: anywhere;
  padding: 4px 8px;
}
.detail-topology {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}
.detail-topology div {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  overflow-wrap: anywhere;
  padding: 7px 8px;
}
.detail-topology span {
  color: var(--text-muted);
  display: block;
  font-family: inherit;
  font-size: 10px;
  margin-bottom: 3px;
  text-transform: uppercase;
}
.detail-section-label {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 10px 0 6px;
}
.detail-attrs {
  max-height: calc(100vh - 190px);
  overflow: auto;
  padding-right: 2px;
}
.detail-row {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 10px;
  padding: 7px 0;
  border-top: 1px solid var(--row-border);
}
.detail-row:first-child { border-top: 0; }
.detail-row-block {
  display: block;
}
.detail-key {
  color: var(--text-muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}
.detail-value {
  color: var(--text);
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.detail-row pre {
  background: var(--pre-bg);
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  color: var(--code-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.45;
  margin: 6px 0 0;
  max-height: 360px;
  overflow: auto;
  padding: 8px;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 280px minmax(0, 1fr);
  }
  .inspector {
    grid-column: 1 / -1;
    min-height: 260px;
    border-left: 0;
    border-top: 1px solid var(--panel-border);
  }
  .details-panel { min-height: 240px; }
  .detail-attrs { max-height: 360px; }
}