three.js/devtools/panel/panel.css

:root {
	color-scheme: light dark;
}

body {
	background: light-dark( #fff, #333 );
	color: light-dark( #333, #e0e0e0 );
	margin: 0;
	padding: 10px;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	font-size: 12px;
}

hr {
	color: light-dark( #333, #e0e0e0 );
}

#scene-tree {
	width: 100%;
	height: 100%;
	overflow: auto;
}

.header {
	padding: 8px 12px;
	background: light-dark( #f5f5f5, #333 );
	border-radius: 4px;
	margin-bottom: 16px;
	font-family: monospace;
	color: light-dark( #666, #aaa );
}
	.header a {
		color: light-dark( #666, #aaa );
		text-decoration: none;
	}
	.header a:hover {
		color: light-dark( #333, #e0e0e0 );
	}

.section {
	margin-bottom: 24px;
}

	.section h3 {
		margin: 0 0 8px 0;
		font-size: 11px;
		text-transform: uppercase;
		color: light-dark( #666, #aaa );
		font-weight: 500;
		border-bottom: 1px solid light-dark( #eee, #444 );
		padding-bottom: 4px;
	}

.tree-item {
	padding: 4px;
	cursor: pointer;
	display: flex;
	align-items: center;
}
.tree-item:hover {
	background: light-dark( #f0f0f0, #555 );
}
.tree-item .icon {
	margin-right: 4px;
	opacity: 0.7;
}
.tree-item .label {
	flex: 1;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}
.tree-item .label .object-details {
	color: #aaa;
	margin-left: 4px;
	font-weight: normal;
}
.tree-item .type {
	margin-left: 8px;
	opacity: 0.5;
	font-size: 0.9em;
}

.children {
	margin-left: 0;
}

/* Collapsible scene tree nodes */
details.tree-node > summary.tree-item {
	list-style: none;
}
details.tree-node > summary.tree-item::-webkit-details-marker {
	display: none;
}

.tree-toggle,
.tree-toggle-placeholder {
	display: inline-block;
	width: 1em;
	margin-right: 2px;
	text-align: center;
	flex-shrink: 0;
}
.tree-toggle::before {
	content: '▶';
	font-size: 0.7em;
	opacity: 0.6;
}
details.tree-node[open] > summary.tree-item .tree-toggle::before {
	content: '▼';
}

/* Style for clickable renderer summary */
.renderer-summary {
	cursor: pointer;
}
.renderer-summary:hover {
	background: light-dark( #f0f0f0, #555 );
}

/* Hide default details marker when using custom summary */
details.renderer-container > summary.renderer-summary { /* Target summary */
	list-style: none; /* Hide default arrow */
	cursor: pointer; /* Make the summary div look clickable */
}
details.renderer-container > summary.renderer-summary::-webkit-details-marker {
	display: none; /* Hide default arrow in WebKit */
}

/* Style for the toggle icon */
.toggle-icon::before {
	content: '▶'; /* Default: collapsed */
	display: inline-block;
	width: 1em;
	margin-right: 2px;
	opacity: 0.7;
}
details.renderer-container[open] > summary.renderer-summary .toggle-icon::before {
	content: '▼'; /* Expanded */
}

/* Floating object details panel */
.floating-details {
	position: fixed;
	z-index: 1000;
	background: light-dark( #fff, #2a2a2a );
	border: 1px solid light-dark( #ccc, #555 );
	border-radius: 6px;
	padding: 12px;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
	max-width: 300px;
	min-width: 200px;
	font-size: 11px;
	pointer-events: none; /* Prevent interfering with mouse interactions */
	opacity: 0;
	transform: translateY(10px);
	transition: opacity 0.2s ease, transform 0.2s ease;
}

.floating-details.visible {
	opacity: 1;
	transform: translateY(0);
}

.floating-details h4 {
	margin: 8px 0 4px 0;
	font-size: 10px;
	text-transform: uppercase;
	color: light-dark( #666, #aaa );
	border-bottom: 1px solid light-dark( #eee, #444 );
	padding-bottom: 2px;
}

.floating-details .property-row {
	margin-bottom: 1px;
	font-size: 10px;
}

/* Scroll to canvas button */
.scroll-to-canvas-btn {
	background: none;
	border: none;
	cursor: pointer;
	font-size: 12px;
	margin-left: 8px;
	padding: 2px 4px;
	border-radius: 3px;
	opacity: 0.6;
	transition: opacity 0.2s ease, background 0.2s ease;
}

.scroll-to-canvas-btn:hover {
	opacity: 1;
	background: light-dark( rgba(0,0,0,0.1), rgba(255,255,255,0.1) );
}

.scroll-to-canvas-placeholder {
	font-size: 12px;
	margin-left: 8px;
	padding: 2px 4px;
	opacity: 0.3;
}

/* Two-column layout for wide panel */
@media (min-width: 1000px) {
	.sections-container {
		display: flex;
		gap: 20px;
		align-items: flex-start;
	}
	
	.sections-container .section {
		flex: 1;
		margin-bottom: 0;
	}
	
	/* Ensure sections have equal width */
	.sections-container .section:first-child {
		min-width: 0; /* Allow flexbox to shrink */
	}
	
	.sections-container .section:last-child {
		min-width: 0; /* Allow flexbox to shrink */
	}
}