/* ─── Tokens ─────────────────────────────────────────────── */
:root {
  --bg:         #0d1117;
  --surface:    #161b27;
  --surface-2:  #1e2538;
  --border:     #252d40;
  --text:       #dde4f0;
  --muted:      #7a8da8;
  --accent:     #00d4ff;

  --c-company:  #f59e0b;
  --c-agent:    #22d3ee;
  --c-project:  #a78bfa;

  --e-membership:   #4e6080;
  --e-works_on:     #22d3ee;
  --e-collaborates: #a78bfa;

  --panel-w: 300px;
  --header-h: 48px;
  --radius: 8px;
  --transition: 0.22s ease;
}

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* ─── Layout ─────────────────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
}

.app-main {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* ─── Header ─────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  gap: 10px;
  height: var(--header-h);
  padding: 0 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
}

.app-logo {
  font-size: 18px;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
}

.app-header h1 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── Legend ─────────────────────────────────────────────── */
.legend {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 12px;
  flex-wrap: wrap;
  overflow: hidden;
}

.legend-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.legend-sep {
  width: 1px;
  height: 14px;
  background: var(--border);
  flex-shrink: 0;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}

/* Node shapes in legend */
.ln {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex-shrink: 0;
}
.ln-company  { background: var(--c-company);  border-radius: 2px; }
.ln-agent    { background: var(--c-agent);    border-radius: 50%; }
.ln-project  {
  background: var(--c-project);
  width: 9px; height: 9px;
  transform: rotate(45deg);
}

/* Edge lines in legend */
.le {
  display: inline-block;
  width: 22px;
  height: 2px;
  flex-shrink: 0;
}
.le-membership   { background: var(--e-membership); }
.le-works_on     {
  background: repeating-linear-gradient(
    90deg, var(--e-works_on) 0, var(--e-works_on) 5px,
    transparent 5px, transparent 9px
  );
}
.le-collaborates {
  background: repeating-linear-gradient(
    90deg, var(--e-collaborates) 0, var(--e-collaborates) 2px,
    transparent 2px, transparent 6px
  );
}

/* ─── Graph ──────────────────────────────────────────────── */
#graph-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#graph-svg {
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#graph-svg:active { cursor: grabbing; }

/* SVG graph elements */
.node {
  cursor: pointer;
}

/* Dimming: desaturate+darken the shape, fade the label.
   No opacity on the <g> group → no brownish compositing artefact. */
.node-shape {
  transform-box:    fill-box;
  transform-origin: center;
  transition: transform 0.18s ease, filter 0.22s ease, stroke 0.22s ease;
}

.node.dimmed .node-shape {
  filter: saturate(0.12) brightness(0.5);
}

.node.dimmed .node-label {
  opacity: 0.3;
}

/* Highlighted: scale-up + glow, keeps full color */
.node.highlighted .node-shape {
  transform: scale(1.1);
  stroke: rgba(255,255,255,0.65);
  stroke-width: 2.5px;
  filter: drop-shadow(0 0 8px rgba(255,255,255,0.3));
}

/* Label: dark halo via paint-order — readable on any background */
.node-label {
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  fill: var(--text);
  paint-order: stroke fill;
  stroke: rgba(13, 17, 23, 0.88);
  stroke-width: 4px;
  stroke-linejoin: round;
  pointer-events: none;
  user-select: none;
  transition: opacity var(--transition);
}

.links line {
  transition: opacity var(--transition);
}

.links line.dimmed { opacity: 0.08; }

/* ─── Overlays ───────────────────────────────────────────── */
.overlay-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  pointer-events: none;
}

.hidden { display: none !important; }

.spinner {
  width: 32px;
  height: 32px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.error-state { color: #f87171; pointer-events: auto; }

/* ─── Detail panel ───────────────────────────────────────── */
.detail-panel {
  width: var(--panel-w);
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  flex-shrink: 0;
  position: relative;
  animation: panel-in var(--transition);
}

@keyframes panel-in {
  from { transform: translateX(var(--panel-w)); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

.panel-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
}

.panel-close:hover {
  background: var(--surface-2);
  color: var(--text);
}

#panel-content {
  padding: 20px 18px 24px;
}

/* Badge */
.panel-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 10px;
}

.panel-badge.company  { background: rgba(245,158,11,0.15); color: var(--c-company); }
.panel-badge.agent    { background: rgba(34,211,238,0.12); color: var(--c-agent);   }
.panel-badge.project  { background: rgba(167,139,250,0.12); color: var(--c-project); }

.panel-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 10px;
  padding-right: 24px;
  word-break: break-word;
}

.panel-description {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 14px;
}

.panel-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 16px;
}

.skill-tag {
  font-size: 11px;
  padding: 2px 9px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
}

/* Attributes */
.panel-attrs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.attr-row { display: flex; flex-direction: column; gap: 2px; }

.attr-row dt {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.attr-row dd {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
}

/* Connections section */
.panel-connections {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.panel-connections h3 {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.conn-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}

.conn-item:last-child { border-bottom: none; }

.conn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.conn-dot.company  { background: var(--c-company); border-radius: 1px; }
.conn-dot.agent    { background: var(--c-agent); }
.conn-dot.project  { background: var(--c-project); border-radius: 0; transform: rotate(45deg); }

.conn-name {
  flex: 1;
  color: var(--text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conn-type {
  font-size: 10px;
  color: var(--muted);
  background: var(--surface-2);
  padding: 1px 6px;
  border-radius: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── Mobile ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  :root { --panel-w: min(290px, 88vw); }

  .app-header {
    padding: 0 12px;
    gap: 8px;
  }

  .legend-sep { display: none; }

  .detail-panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    box-shadow: -6px 0 24px rgba(0,0,0,0.6);
  }
}

/* ─── Filter toggles ─────────────────────────────────────── */
.filters {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-shrink: 0;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--transition), border-color var(--transition);
  user-select: none;
}

.filter-btn:hover { border-color: var(--muted); }

.filter-btn.inactive {
  opacity: 0.3;
  border-color: transparent;
}

@media (max-width: 400px) {
  .legend  { display: none; }
  .filters { gap: 2px; }
  .filter-btn { padding: 2px 6px; }
}