/**
 * DocSync Project Tree Styles
 *
 * Hierarchical navigation tree for documentation projects.
 * Supports collapsible sections, current-page highlighting,
 * and nested term hierarchies.
 */

.docsync-project-tree {
	padding: var(--docsync-space-md, 0.75rem);
	background: var(--docsync-background-card, #ffffff);
	border: 1px solid var(--docsync-border-light, #e9ecef);
	border-radius: 8px;
}

/* Project title */
.docsync-tree-title {
	margin: 0 0 var(--docsync-space-sm, 0.5rem);
	padding: 0 var(--docsync-space-sm, 0.5rem);
	font-size: var(--docsync-font-size-sm, 0.875rem);
	font-weight: 700;
}

.docsync-tree-title a {
	color: var(--docsync-heading-color, #212529);
	text-decoration: none;
}

.docsync-tree-title a:hover {
	color: var(--docsync-accent-strong, #0066cc);
}

/* Tree lists */
.docsync-tree-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.docsync-tree-children {
	list-style: none;
	margin: 0;
	padding: 0 0 0 0.75rem;
}

/* Section toggle buttons */
.docsync-tree-toggle {
	display: flex;
	align-items: center;
	gap: 0.35rem;
	width: 100%;
	padding: 0.3rem 0.5rem;
	margin: 1px 0;
	border: none;
	background: none;
	font-family: inherit;
	font-size: var(--docsync-font-size-sm, 0.875rem);
	font-weight: 600;
	color: var(--docsync-text-secondary, #495057);
	text-align: left;
	cursor: pointer;
	border-radius: 4px;
	transition: background-color 0.15s ease, color 0.15s ease;
}

.docsync-tree-toggle:hover {
	background: var(--docsync-accent-subtle, #e6f0fa);
	color: var(--docsync-accent-strong, #0066cc);
}

/* Chevron icon */
.docsync-tree-icon {
	display: inline-block;
	width: 12px;
	height: 12px;
	flex-shrink: 0;
	transition: transform 0.15s ease;
}

.docsync-tree-icon::before {
	content: '';
	display: block;
	width: 0;
	height: 0;
	border-style: solid;
	border-width: 4px 0 4px 6px;
	border-color: transparent transparent transparent currentColor;
	margin: 2px 0 0 2px;
}

.docsync-tree-expanded > .docsync-tree-toggle .docsync-tree-icon {
	transform: rotate(90deg);
}

/* Collapsed sections hide children */
.docsync-tree-collapsed > .docsync-tree-children {
	display: none;
}

.docsync-tree-expanded > .docsync-tree-children {
	display: block;
}

/* Doc links */
.docsync-tree-doc a {
	display: block;
	padding: 0.25rem 0.5rem;
	margin: 1px 0;
	font-size: var(--docsync-font-size-sm, 0.875rem);
	line-height: 1.4;
	color: var(--docsync-text-secondary, #495057);
	text-decoration: none;
	border-radius: 4px;
	transition: color 0.15s ease, background-color 0.15s ease;
}

.docsync-tree-doc a:hover {
	color: var(--docsync-accent-strong, #0066cc);
	background: var(--docsync-accent-subtle, #e6f0fa);
}

/* Current page highlight */
.docsync-tree-current a {
	color: var(--docsync-accent-strong, #0066cc);
	font-weight: 500;
	background: var(--docsync-accent-subtle, #e6f0fa);
}