/* ==========================================================================
   Family Trees Page Styles
   ========================================================================== */

.family-trees-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-5);
  align-items: start;
}

/* --- Tree Selector Sidebar --- */
.tree-selector {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-5));
  background: var(--bg-card);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.tree-selector h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-secondary);
}

.tree-selector-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: var(--space-1);
}

.tree-selector-item:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.tree-selector-item.active {
  background: var(--accent-primary);
  color: white;
}

/* --- Canvas Area --- */
.tree-canvas-area {
  background: var(--bg-card);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  min-height: 600px;
}

.tree-canvas-area canvas {
  display: block;
  cursor: grab;
}

.tree-canvas-area canvas:active {
  cursor: grabbing;
}

/* --- Tree Controls --- */
.tree-controls {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: var(--z-base);
}

.tree-control-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  font-size: var(--text-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.tree-control-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* --- Tree Options Bar --- */
.tree-options {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-secondary);
  flex-wrap: wrap;
}

.tree-option-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.tree-option-label {
  color: var(--text-tertiary);
  font-weight: 500;
}

/* --- Tree Node Tooltip --- */
.tree-node-tooltip {
  position: absolute;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-tooltip);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  max-width: 250px;
}

.tree-node-tooltip.visible {
  opacity: 1;
  pointer-events: auto;
}

.tree-node-tooltip-name {
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

.tree-node-tooltip-year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.tree-node-tooltip-link {
  font-size: var(--text-xs);
  color: var(--text-link);
  font-weight: 600;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .family-trees-layout {
    grid-template-columns: 1fr;
  }

  .tree-selector {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-3);
  }

  .tree-selector h3 {
    width: 100%;
  }

  .tree-selector-item {
    padding: var(--space-2) var(--space-3);
  }
}