/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   Termnova — Contract Knowledge Graph & Topology Styles
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

.graph-view-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* ──── Graph Toolbar Header ──── */
.graph-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-hairline);
  gap: 16px;
  flex-wrap: wrap;
  z-index: 10;
}

.graph-toolbar-left,
.graph-toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.view-mode-toggle {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 2px;
}

.view-mode-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.view-mode-btn.active {
  background: var(--brand-blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
}

.graph-search-input {
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  color: #fff;
  font-size: 0.82rem;
  padding: 6px 12px;
  min-width: 200px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.graph-search-input:focus {
  border-color: var(--brand-blue);
}

/* Filter pills */
.filter-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.filter-pill.active {
  border-color: var(--border-subtle);
  color: #fff;
}

.filter-pill.active.pill-msa { background: rgba(59, 130, 246, 0.2); color: #60a5fa; border-color: #3b82f6; }
.filter-pill.active.pill-sow { background: rgba(34, 197, 94, 0.2); color: #4ade80; border-color: #22c55e; }
.filter-pill.active.pill-nda { background: rgba(168, 85, 247, 0.2); color: #c084fc; border-color: #a855f7; }
.filter-pill.active.pill-amend { background: rgba(245, 158, 11, 0.2); color: #fbbf24; border-color: #f59e0b; }
.filter-pill.active.pill-entity { background: rgba(99, 102, 241, 0.2); color: #818cf8; border-color: #6366f1; }

/* ──── Canvas Container ──── */
.graph-canvas-container {
  flex: 1;
  position: relative;
  background: radial-gradient(circle at center, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.95) 100%), #0b0f19;
  overflow: hidden;
}

#graph-svg {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

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

/* Floating Zoom Controls */
.graph-floating-controls {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  z-index: 5;
}

.graph-ctrl-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: 700;
  transition: all var(--transition-fast);
}

.graph-ctrl-btn:hover {
  background: var(--bg-card);
  color: #fff;
}

/* Graph Node & Edge SVG Elements */
.graph-link {
  stroke: rgba(148, 163, 184, 0.25);
  stroke-width: 1.5px;
  transition: stroke 200ms ease;
}

.graph-link.highlighted {
  stroke: var(--brand-blue-light);
  stroke-width: 2.5px;
}

.graph-link-label {
  font-size: 9px;
  font-family: var(--font-mono);
  fill: var(--text-muted);
  text-anchor: middle;
  pointer-events: none;
}

.graph-node {
  cursor: pointer;
  transition: transform 150ms ease;
}

.graph-node circle.node-base {
  stroke-width: 2px;
  transition: all 150ms ease;
}

.graph-node:hover circle.node-base {
  stroke: #fff;
  filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.6));
}

.graph-node.selected circle.node-base {
  stroke: #fff;
  stroke-width: 3px;
  filter: drop-shadow(0 0 14px var(--brand-blue));
}

.graph-node-label {
  font-size: 11px;
  font-weight: 600;
  fill: #e2e8f0;
  text-anchor: middle;
  pointer-events: none;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9);
}

/* ──── Node Colors by Type ──── */
.node-type-msa { fill: #3b82f6; stroke: #60a5fa; }
.node-type-sow { fill: #22c55e; stroke: #4ade80; }
.node-type-nda { fill: #a855f7; stroke: #c084fc; }
.node-type-amendment { fill: #f59e0b; stroke: #fbbf24; }
.node-type-lease { fill: #ef4444; stroke: #f87171; }
.node-type-vendor { fill: #ec4899; stroke: #f472b6; }
.node-type-company { fill: #6366f1; stroke: #818cf8; }
.node-type-jurisdiction { fill: #14b8a6; stroke: #2dd4bf; }
.node-type-person { fill: #8b5cf6; stroke: #a78bfa; }
.node-type-other { fill: #64748b; stroke: #94a3b8; }

/* ──── Node Detail Drawer ──── */
.graph-drawer {
  position: absolute;
  top: 0;
  right: -420px;
  width: 400px;
  height: 100%;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.6);
  transition: right 250ms cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  z-index: 20;
}

.graph-drawer.open {
  right: 0;
}

.graph-drawer-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.graph-drawer-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.node-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.node-meta-card {
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 10px 12px;
}

.node-meta-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.node-meta-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin-top: 3px;
}

.parties-list-box {
  background: var(--bg-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 12px;
}

.party-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.party-badge {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.4);
  color: #a5b4fc;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
}

/* ──── Document Stack View (Hierarchical Cards) ──── */
.stack-view-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  background: var(--bg-card);
}

.stack-tree-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.stack-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 12px;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
}

.stack-card:hover {
  border-color: var(--border-subtle);
  transform: translateX(4px);
}

.stack-card.root-card {
  border-left: 4px solid var(--brand-blue);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, var(--bg-surface) 100%);
}

.stack-card.child-card {
  margin-left: 36px;
  border-left: 3px solid var(--color-success);
  position: relative;
}

.stack-card.child-card::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--border-hairline);
}

.stack-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.stack-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.stack-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ──── Mobile & Tablet Responsiveness for Knowledge Graph ──── */
@media screen and (max-width: 1024px) {
  .graph-drawer {
    width: 100vw;
    max-width: 100vw;
    right: -100vw;
  }

  .graph-drawer.open {
    right: 0;
  }
}

@media screen and (max-width: 768px) {
  .graph-toolbar {
    padding: 8px 12px;
    gap: 8px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .graph-toolbar-left,
  .graph-toolbar-right {
    flex-shrink: 0;
  }

  .graph-search-input {
    min-width: 140px;
    font-size: 0.78rem;
  }

  .stack-view-container {
    padding: 12px;
  }

  .stack-card {
    padding: 12px 14px;
  }

  .stack-card.child-card {
    margin-left: 16px;
  }

  .stack-card.child-card::before {
    left: -10px;
    width: 8px;
  }

  .node-meta-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
}

@media screen and (max-width: 480px) {
  .view-mode-btn span {
    display: none;
  }

  .view-mode-btn {
    padding: 6px 8px;
  }

  .node-meta-grid {
    grid-template-columns: 1fr;
  }
}