/* ═══════════════════════════════════════════════════════════════════════
   NeuronVault — Knowledge Graph & Reasoning Graph Styles
   D3.js node/edge visual definitions
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Knowledge Graph SVG Styles ─────────────────────────────────────────── */
.kg-node {
  cursor: pointer;
  transition: all 0.2s ease;
}

.kg-node circle {
  transition: r 0.2s ease, filter 0.2s ease;
  stroke-width: 1.5;
}

.kg-node:hover circle {
  filter: brightness(1.4);
}

.kg-node.focused circle {
  filter: brightness(1.6);
  stroke-width: 2.5;
}

.kg-node.dimmed circle, .kg-node.dimmed text {
  opacity: 0.15;
}

.kg-node text {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  fill: var(--text-primary);
  pointer-events: none;
  transition: fill 0.2s ease, opacity 0.2s ease;
  text-anchor: middle;
}

.kg-node:hover text, .kg-node.focused text {
  fill: var(--text-primary);
}

/* Node type colors are managed dynamically by D3 attributes in graph.js */

/* Selected node has a glow ring */
.kg-node.selected circle {
  stroke-width: 3;
  filter: drop-shadow(0 0 8px currentColor);
}

/* ── Knowledge Graph Edges ─────────────────────────────────────────────── */
.kg-link {
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.kg-link.dimmed { opacity: 0.04; }
.kg-link.highlighted { opacity: 1; }

.kg-link[data-type="supports"] { stroke-dasharray: 4,2; }
.kg-link[data-type="contradicts"] { stroke-dasharray: 2,3; }

/* Arrow marker for directed edges */
.kg-link marker path {
  fill: currentColor;
}

/* ── Reasoning Graph SVG Styles ─────────────────────────────────────────── */
.rkg-node {
  cursor: pointer;
}

.rkg-node circle {
  transition: r 0.2s ease, filter 0.2s ease;
  stroke-width: 1.5;
}

.rkg-node:hover circle { filter: brightness(1.3); }

.rkg-node text {
  font-family: 'Inter', sans-serif;
  font-size: 9.5px;
  font-weight: 600;
  pointer-events: none;
  text-anchor: middle;
  dominant-baseline: middle;
}

/* Node category visuals managed by D3 attributes in reasoning.js */

/* Reasoning graph edges */
.rkg-link {
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.rkg-link[data-type="negative"] {
  stroke-dasharray: 5,3;
}

.rkg-link[data-type="moderator"] {
  stroke-dasharray: 2,4;
}

.rkg-link-label {
  font-family: 'Inter', sans-serif;
  font-size: 8px;
  pointer-events: none;
  text-anchor: middle;
}

/* Dimmed state for filter */
.rkg-node.dimmed { opacity: 0.1; }
.rkg-link.dimmed { opacity: 0.05; }
.rkg-link.highlighted { opacity: 1; }

/* ── Time Slider Gradient ──────────────────────────────────────────── */
.slider-track {
  background: linear-gradient(to right, var(--bg-muted), var(--accent-emerald));
}

/* ── Graph grid background ────────────────────────────────────────── */
.graph-grid {
  stroke: rgba(255,255,255,0.03);
  stroke-width: 1;
}

/* ── Minimap (future) ─────────────────────────────────────────────── */
.minimap {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 140px;
  height: 100px;
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  backdrop-filter: blur(8px);
  overflow: hidden;
}