/* ============================================================================
   Knowledge Fabric · Command Center — Mission control aesthetic
   ============================================================================ */
:root {
  --bg: #05070f;
  --bg-1: #080c18;
  --bg-2: #0d1324;
  --bg-3: #131a30;
  --bg-4: #1a2240;
  --border: #1f2942;
  --border-soft: #141c33;
  --border-strong: #2a355a;

  --text: #e9eef8;
  --text-dim: #98a3c1;
  --text-mute: #5c6788;

  --brand: #5b8aff;
  --brand-soft: rgba(91, 138, 255, 0.14);
  --accent: #59e8c5;
  --accent-soft: rgba(89, 232, 197, 0.12);
  --warn: #ffb74a;
  --danger: #ff6b80;
  --magenta: #c66bff;

  --node-base: #3d4a72;
  --node-related: #5b8aff;
  --node-active: #59e8c5;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.5);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.55);
  --shadow-glow-brand: 0 0 28px rgba(91, 138, 255, 0.35);
  --shadow-glow-accent: 0 0 28px rgba(89, 232, 197, 0.4);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}
body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(900px 500px at 85% -5%, rgba(89, 232, 197, 0.06), transparent 60%),
    radial-gradient(800px 500px at -5% 100%, rgba(91, 138, 255, 0.07), transparent 60%),
    radial-gradient(600px 400px at 50% 50%, rgba(198, 107, 255, 0.025), transparent 70%),
    var(--bg);
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h2 { font-family: var(--font-serif); font-weight: 400; font-size: 22px; letter-spacing: -0.005em; }
h3 { font-size: 13.5px; }
h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-mute); font-weight: 600; }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }
[hidden] { display: none !important; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }
::-webkit-scrollbar-track { background: transparent; }

/* ============================================================================
   COMMAND BAR — top header with brand + stat tiles + LIVE status
   ============================================================================ */
.cmd-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  background: linear-gradient(180deg, rgba(13, 19, 36, 0.92), rgba(8, 12, 24, 0.85));
  border-bottom: 1px solid var(--border-soft);
  position: relative;
  z-index: 10;
  flex-shrink: 0;
}
.cmd-bar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand) 40%, var(--accent) 60%, transparent);
  opacity: 0.5;
}

.cmd-brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.cmd-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--accent) 100%);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-glow-accent);
  position: relative;
}
.cmd-logo::before {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 7px;
  background: var(--bg);
}
.cmd-logo-pulse {
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
  position: relative;
  z-index: 1;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.65; }
}

.cmd-brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.cmd-eyebrow {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 600;
}
.cmd-title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-top: 1px;
}

.cmd-tiles {
  display: flex;
  gap: 1px;
  margin-left: 16px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  background: var(--border-soft);
  border-radius: 10px;
  padding: 1px;
}
.tile {
  flex: 1;
  min-width: 0;
  padding: 8px 14px;
  background: linear-gradient(180deg, rgba(19, 26, 48, 0.65), rgba(13, 19, 36, 0.4));
  display: flex;
  flex-direction: column;
  gap: 1px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}
.tile:first-child { border-top-left-radius: 9px; border-bottom-left-radius: 9px; }
.tile:last-child { border-top-right-radius: 9px; border-bottom-right-radius: 9px; }
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(140px 60px at 50% -10%, rgba(91, 138, 255, 0.15), transparent);
  pointer-events: none;
}
.tile-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  font-weight: 600;
}
.tile-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.tile-delta {
  font-size: 10px;
  color: var(--text-mute);
}

.cmd-status {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
  flex-shrink: 0;
}
.status-dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
.status-text {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
}

/* ============================================================================
   GRID — 4-pane mission control layout
   ============================================================================ */
.grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  grid-template-rows: 1.25fr 1fr;
  gap: 1px;
  background: var(--border-soft);
  min-height: 0;
  overflow: hidden;
}

.pane {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  position: relative;
}
.pane-galaxy   { grid-column: 1; grid-row: 1; }
.pane-copilot  { grid-column: 2; grid-row: 1; }
.pane-lineage  { grid-column: 1; grid-row: 2; }
.pane-insights { grid-column: 2; grid-row: 2; }

.pane-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(13, 19, 36, 0.35), transparent);
  flex-shrink: 0;
}
.pane-head h2 { font-size: 18px; }
.pane-sub {
  font-size: 11.5px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* ============================================================================
   KNOWLEDGE GALAXY (pane 1)
   ============================================================================ */
.legend {
  display: flex;
  gap: 10px;
  font-size: 10.5px;
  color: var(--text-dim);
  align-items: center;
}
.lg-item { display: inline-flex; align-items: center; gap: 4px; }
.lg-dot { width: 7px; height: 7px; border-radius: 50%; }
.lg-active { background: var(--node-active); box-shadow: 0 0 6px var(--node-active); }
.lg-related { background: var(--node-related); }
.lg-base { background: var(--node-base); }

.galaxy-canvas {
  flex: 1;
  min-height: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(91, 138, 255, 0.05), transparent 65%),
    radial-gradient(circle at 30% 70%, rgba(89, 232, 197, 0.04), transparent 60%);
  position: relative;
}
.galaxy-canvas::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.15), transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(255,255,255,0.1), transparent),
    radial-gradient(1px 1px at 80% 20%, rgba(255,255,255,0.12), transparent),
    radial-gradient(1px 1px at 35% 85%, rgba(255,255,255,0.08), transparent);
  pointer-events: none;
}
.vis-network:focus { outline: none; }

/* Floating ask launcher (mobile only) */
.ask-launcher {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
}
.ask-launcher button {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: var(--bg);
  border: none;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 12.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-glow-brand);
}

/* Galaxy floating detail card */
.galaxy-detail {
  position: absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
  max-height: 55%;
  background: rgba(13, 19, 36, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-md);
  overflow-y: auto;
  z-index: 5;
  animation: slideUp 0.22s ease-out;
}
@keyframes slideUp { from { transform: translateY(8px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.detail-close {
  position: absolute;
  top: 8px;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-mute);
  font-size: 20px;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  line-height: 1;
}
.detail-close:hover { color: var(--text); background: var(--bg-3); }

/* ===== Premium entity cards ===== */
.entity-card-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 6px;
}
.entity-card-eyebrow::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent);
}
.entity-card-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 12px;
}
.entity-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 10px 12px;
  background: var(--bg-1);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  margin-bottom: 14px;
}
.entity-card-meta .kv {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.entity-card-meta .k {
  font-size: 9.5px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  font-weight: 600;
}
.entity-card-meta .v {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}
.entity-card-section { margin-top: 14px; }
.entity-card-section h4 { margin-bottom: 8px; }
.entity-card-pills { display: flex; flex-wrap: wrap; gap: 5px; }

.pill {
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 11.5px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.15s;
}
.pill:hover { border-color: var(--brand); background: rgba(91, 138, 255, 0.18); }
.pill-accent { background: var(--accent-soft); color: var(--accent); }
.pill-accent:hover { border-color: var(--accent); background: rgba(89, 232, 197, 0.16); }

.evidence {
  background: var(--bg-1);
  border-left: 2px solid var(--brand);
  padding: 9px 12px;
  border-radius: 0 6px 6px 0;
  margin-bottom: 6px;
  font-size: 12.5px;
  cursor: pointer;
  transition: background 0.15s;
}
.evidence:hover { background: var(--bg-2); }
.evidence-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
  margin-bottom: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}
.evidence-meta .doc { color: var(--accent); }
.evidence-meta .sep { color: var(--border-strong); }
.evidence-text {
  color: var(--text-dim);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================================
   AI COPILOT (pane 2)
   ============================================================================ */
/* --- AI synthesis control + status --------------------------------------- */
.copilot-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.ai-enable {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-soft);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, opacity 0.15s;
}
.ai-enable:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(89, 232, 197, 0.16);
}
.ai-enable:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  color: var(--text-mute);
}
.ai-pill {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 5px 9px;
  border-radius: 7px;
  white-space: nowrap;
}
.ai-pill.loading { color: #ffd479; background: rgba(255, 212, 121, 0.12); }
.ai-pill.on {
  color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 8px rgba(89, 232, 197, 0.25);
}
.ai-pill.err { color: var(--danger); background: rgba(255, 107, 128, 0.12); }

/* --- Galaxy activation caption ------------------------------------------- */
.galaxy-activation {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 6;
  background: linear-gradient(180deg, rgba(9, 14, 28, 0.72), rgba(9, 14, 28, 0.92));
  border: 1px solid var(--accent-soft);
  border-radius: 12px;
  padding: 10px 12px;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.35);
  animation: fadeInUp 0.28s ease both;
}
.ga-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.ga-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  flex-shrink: 0;
}
.ga-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.ga-meta {
  font-size: 10.5px;
  color: var(--text-mute);
  margin-left: auto;
  font-family: var(--font-mono);
}
.ga-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 84px;
  overflow-y: auto;
}
.ga-chip {
  font-size: 11.5px;
  font-weight: 600;
  color: #06231d;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  padding: 4px 9px;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.15s;
}
.ga-chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 10px rgba(94, 227, 197, 0.6);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.answer-text.reveal { animation: fadeInUp 0.22s ease both; }

.answer-text.streaming {
  color: var(--text-dim);
  font-style: italic;
}
.answer-text.streaming::after {
  content: '▍';
  animation: blink 1s steps(2) infinite;
  color: var(--accent);
  font-style: normal;
}
@keyframes blink { 50% { opacity: 0; } }

.copilot-metrics {
  display: flex;
  gap: 12px;
}
.metric {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1;
}
.m-k {
  font-size: 9.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  font-weight: 600;
}
.m-v {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  margin-top: 2px;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
}

.copilot-empty {
  margin: auto;
  text-align: center;
  max-width: 320px;
}
.copilot-orb {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(91, 138, 255, 0.65), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(89, 232, 197, 0.55), transparent 60%),
    var(--bg-2);
  border: 1px solid var(--border-strong);
  position: relative;
  box-shadow: var(--shadow-glow-brand);
  animation: orb-float 4s ease-in-out infinite;
}
.copilot-orb::after {
  content: "";
  position: absolute;
  inset: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 0 18px rgba(89, 232, 197, 0.6);
  animation: orb-inner 4s ease-in-out infinite;
}
@keyframes orb-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}
@keyframes orb-inner {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.85; }
}
.copilot-hint {
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.suggestions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}
.chip {
  background: var(--bg-1);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
  text-align: left;
  transition: all 0.15s;
}
.chip:hover {
  background: var(--bg-2);
  color: var(--text);
  border-color: var(--brand);
  transform: translateY(-1px);
}

.msg { display: flex; }
.msg-user { justify-content: flex-end; }
.msg-bubble {
  max-width: 92%;
  padding: 12px 15px;
  border-radius: var(--radius-lg);
  font-size: 13.5px;
  line-height: 1.55;
}
.msg-user .msg-bubble {
  background: linear-gradient(135deg, var(--brand), #4a73d8);
  color: white;
  border-bottom-right-radius: 4px;
}
.msg-assistant .msg-bubble {
  background: var(--bg-1);
  border: 1px solid var(--border-soft);
  border-bottom-left-radius: 4px;
}
.answer-text { white-space: pre-wrap; }
.answer-text .cite-ref {
  display: inline-block;
  background: var(--brand-soft);
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
  margin: 0 1px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: border-color 0.15s;
}
.answer-text .cite-ref:hover { border-color: var(--brand); }

.answer-actions {
  margin-top: 12px;
  padding-top: 11px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.action-btn {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s;
}
.action-btn:hover {
  background: var(--bg-3);
  color: var(--accent);
  border-color: var(--accent-soft);
}
.answer-confidence {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.ac-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-mute); font-weight: 600; }
.ac-bar {
  width: 60px;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.ac-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--brand), var(--accent));
}
.ac-value { font-family: var(--font-mono); font-size: 11px; color: var(--text); font-variant-numeric: tabular-nums; font-weight: 600; }

.composer {
  display: flex;
  gap: 8px;
  padding: 14px 22px 18px;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(0deg, rgba(13, 19, 36, 0.4), transparent);
  flex-shrink: 0;
}
.composer input {
  flex: 1;
  background: var(--bg-1);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
  font-size: 13.5px;
  padding: 10px 14px;
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.composer input::placeholder { color: var(--text-mute); }
.composer input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(91, 138, 255, 0.15);
}
.composer button {
  background: linear-gradient(135deg, var(--brand), #4a73d8);
  color: white;
  border: none;
  padding: 0 16px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 12.5px;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: transform 0.1s, box-shadow 0.15s;
}
.composer button:hover { box-shadow: 0 4px 14px rgba(91, 138, 255, 0.35); }
.composer button:active { transform: scale(0.97); }
.composer button:disabled { opacity: 0.5; cursor: wait; }

/* ============================================================================
   SOURCE LINEAGE (pane 3)
   ============================================================================ */
.ghost-btn {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s;
}
.ghost-btn:hover {
  background: rgba(89, 232, 197, 0.08);
  border-color: var(--accent-soft);
  box-shadow: 0 0 14px rgba(89, 232, 197, 0.18);
}

.lineage-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px;
  font-size: 12.5px;
}
.lineage-empty {
  margin: auto;
  padding-top: 40px;
  text-align: center;
  color: var(--text-mute);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.lineage-empty svg { color: var(--text-mute); opacity: 0.5; }
.lineage-empty p { font-size: 12px; line-height: 1.6; }

/* Lineage tree */
.lineage-root {
  position: relative;
  padding-left: 0;
}
.lineage-answer {
  background: linear-gradient(135deg, rgba(89, 232, 197, 0.08), rgba(91, 138, 255, 0.06));
  border: 1px solid var(--accent-soft);
  border-radius: 10px;
  padding: 11px 14px;
  margin-bottom: 14px;
  position: relative;
}
.lineage-answer .lineage-eyebrow {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
}
.lineage-answer-text {
  margin-top: 4px;
  color: var(--text);
  font-size: 12.5px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.lineage-tree { padding-left: 14px; }
.lineage-doc {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
}
.lineage-doc::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 14px;
  height: 1px;
  background: var(--border-strong);
}
.lineage-doc::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border-strong);
}
.lineage-doc:last-child::after { height: 12px; }
.lineage-doc-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}
.lineage-doc-name {
  font-weight: 600;
  color: var(--accent);
  font-size: 12.5px;
}
.lineage-doc-stat {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-mute);
}
.lineage-page {
  padding-left: 14px;
  margin-bottom: 4px;
  position: relative;
}
.lineage-page::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--text-mute);
  font-weight: 600;
}
.lineage-page-info {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-mute);
  font-weight: 500;
}
.lineage-section {
  color: var(--text-dim);
  font-style: italic;
  font-size: 12px;
  margin-top: 2px;
}
.lineage-paragraph {
  margin-top: 6px;
  padding: 8px 11px;
  background: var(--bg-1);
  border-left: 2px solid var(--brand);
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  transition: background 0.15s;
}
.lineage-paragraph:hover { background: var(--bg-2); }
.lineage-para-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
  margin-bottom: 3px;
}
.lineage-para-text {
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================================
   INSIGHTS DASHBOARD (pane 4)
   ============================================================================ */
.tabs {
  display: inline-flex;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
  gap: 1px;
}
.tab {
  background: none;
  border: none;
  color: var(--text-dim);
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 500;
  transition: all 0.12s;
}
.tab:hover { color: var(--text); }
.tab.is-active {
  background: var(--bg-3);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.insights-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px;
  min-height: 0;
}
.insight-panel { display: none; }
.insight-panel.is-active { display: block; }

/* ===== Heatmap ===== */
.heatmap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.heatmap-intro {
  font-size: 11.5px;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.hm-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.hm-label {
  font-size: 11.5px;
  color: var(--text-dim);
  flex: 0 0 38%;
  min-width: 0;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}
.hm-track {
  flex: 1;
  height: 22px;
  background: var(--bg-1);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}
.hm-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand) 0%, var(--accent) 100%);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 8px;
  transition: width 0.6s ease;
  position: relative;
}
.hm-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 70%, rgba(255,255,255,0.18));
  border-radius: 5px;
}
.hm-value {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--bg);
  font-weight: 600;
  position: relative;
  z-index: 1;
}

/* ===== Word Cloud ===== */
.wordcloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  align-items: center;
  justify-content: center;
  padding: 14px 4px;
  line-height: 1.4;
}
.wc-word {
  background: none;
  border: none;
  padding: 2px 4px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: all 0.18s;
  color: var(--text-dim);
}
.wc-word:hover { color: var(--accent); transform: translateY(-1px); text-shadow: 0 0 14px rgba(89, 232, 197, 0.5); }

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding: 8px 0;
}
.tl-axis {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
  margin-bottom: 6px;
  padding: 0 4px;
}
.tl-bars {
  display: flex;
  align-items: flex-end;
  height: 90px;
  gap: 3px;
  border-bottom: 1px solid var(--border-soft);
  padding: 0 4px 0;
  margin-bottom: 12px;
}
.tl-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--accent), var(--brand));
  border-radius: 3px 3px 0 0;
  min-height: 4px;
  opacity: 0.55;
  transition: opacity 0.15s, transform 0.15s;
  cursor: pointer;
}
.tl-bar:hover { opacity: 1; transform: scaleY(1.05); transform-origin: bottom; }
.tl-events {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tl-event {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  background: var(--bg-1);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  font-size: 11.5px;
}
.tl-event-date {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
  min-width: 70px;
}
.tl-event-text { color: var(--text-dim); flex: 1; min-width: 0; }
.tl-event-count {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-mute);
  flex-shrink: 0;
}

/* ============================================================================
   EXPLAIN OVERLAY — Why Did AI Say This?
   ============================================================================ */
.explain-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 15, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fade 0.18s ease-out;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.explain-modal {
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  width: 100%;
  max-width: 760px;
  max-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  position: relative;
}
.explain-head {
  padding: 20px 26px;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: linear-gradient(180deg, rgba(91, 138, 255, 0.08), transparent);
}
.explain-eyebrow {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 600;
}
.explain-head h2 { font-size: 22px; margin-top: 3px; }
.explain-flow {
  flex: 1;
  overflow-y: auto;
  padding: 20px 26px 28px;
}

.flow-step {
  position: relative;
  padding: 14px 18px 14px 56px;
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  margin-bottom: 10px;
}
.flow-step::before {
  content: attr(data-step);
  position: absolute;
  left: 14px;
  top: 14px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-1);
  border: 1px solid var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}
.flow-connector {
  width: 1px;
  height: 18px;
  background: linear-gradient(180deg, var(--accent-soft), transparent);
  margin: 0 auto 4px 28px;
}
.flow-step h3 { font-size: 13px; color: var(--text); margin-bottom: 6px; }
.flow-step-body { font-size: 12.5px; color: var(--text-dim); line-height: 1.55; }
.flow-step-question {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--text);
  font-style: italic;
}
.flow-doc-list { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.flow-doc-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  background: var(--bg-1);
  border-radius: 6px;
  font-size: 11.5px;
}
.flow-doc-rank {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
  width: 22px;
}
.flow-doc-name { color: var(--accent); font-weight: 500; flex-shrink: 0; }
.flow-doc-section { color: var(--text-dim); font-style: italic; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.flow-doc-score { font-family: var(--font-mono); font-size: 10.5px; color: var(--text-mute); font-variant-numeric: tabular-nums; }

.flow-graph-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.flow-entity {
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11.5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 500;
}
.flow-stats {
  display: flex;
  gap: 14px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-mute);
}
.flow-stats strong { color: var(--text); font-weight: 600; }

.flow-context-list { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.flow-context-row {
  padding: 7px 10px;
  background: var(--bg-1);
  border-left: 2px solid var(--brand);
  border-radius: 0 6px 6px 0;
  font-size: 11.5px;
  color: var(--text-dim);
  line-height: 1.55;
}

.flow-answer {
  background: linear-gradient(135deg, rgba(89, 232, 197, 0.08), rgba(91, 138, 255, 0.06));
  border-color: var(--accent-soft);
}
.flow-answer-text {
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
  margin-top: 4px;
}

/* ============================================================================
   RESPONSIVE — tablet & phone
   ============================================================================ */
@media (max-width: 1100px) {
  html, body { overflow: auto; }
  body { height: auto; min-height: 100vh; }
  .grid {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(4, minmax(380px, auto));
    overflow: visible;
  }
  .pane-galaxy   { grid-column: 1; grid-row: 1; }
  .pane-copilot  { grid-column: 1; grid-row: 2; }
  .pane-lineage  { grid-column: 1; grid-row: 3; }
  .pane-insights { grid-column: 1; grid-row: 4; }
  .pane { min-height: 380px; }
  .cmd-tiles { overflow-x: auto; }
  .tile { min-width: 110px; }
}

@media (max-width: 720px) {
  .cmd-bar { padding: 10px 14px; gap: 12px; flex-wrap: wrap; }
  .cmd-tiles { order: 3; flex-basis: 100%; margin-left: 0; }
  .cmd-status { margin-left: auto; }
  .cmd-brand-text .cmd-eyebrow { font-size: 9px; }
  .cmd-title { font-size: 16px; }
  .pane-head { padding: 14px 16px; }
  .pane-head h2 { font-size: 16px; }
  .messages, .composer, .lineage-body, .insights-body { padding-left: 14px; padding-right: 14px; }
  .explain-overlay { padding: 12px; }
  .explain-head { padding: 16px 18px; }
  .explain-flow { padding: 16px 18px 22px; }
  .legend { display: none; }
  .copilot-metrics { gap: 8px; }
  .m-v { font-size: 11.5px; }
}