:root {
	--bg-color: #ffffff;
	--text-color: #000000;
	--muted-text: #666666;
	--border-color: #cccccc;
	--panel-bg: #f9f9f9;
	--hover-bg: #f0f0f0;

	--comment-bg: #ffffcc;
	--comment-border: #ffcc00;

	--viewer-header-height: 56px;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg-color: #1a1a1a;
		--text-color: #e0e0e0;
		--muted-text: #999999;
		--border-color: #444444;
		--panel-bg: #2a2a2a;
		--hover-bg: #2a2a2a;

		--comment-bg: #3a3a00;
		--comment-border: #cccc00;
	}
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	padding: 0;
	font-family: system-ui, sans-serif;
	-webkit-text-size-adjust: none;
	color: var(--text-color);
	background-color: var(--bg-color);
}

body.page {
	min-height: 100%;
	display: grid;
	grid-template-rows: auto minmax(0, 1fr);
}

main {
	padding: 8px;
}

.viewer-header {
	padding: 8px;
	position: sticky;
	top: 0;
	z-index: 10000;
	background: var(--panel-bg);
	border-bottom: 1px solid var(--border-color);
	width: 100%;
}

.viewer-header::after {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	height: 1px;
	background: var(--border-color);
	pointer-events: none;
}

.viewer-header--stacked .viewer-title {
	margin: 0 0 6px;
	line-height: 1.2;
}

.viewer-filename {
	font-weight: 700;
	word-break: break-word;
	overflow: hidden;
	text-overflow: ellipsis;
}

.viewer-meta {
	display: flex;
	gap: 12px;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
}

.viewer-id {
	font-family: ui-monospace, monospace;
	color: var(--muted-text);
	background: var(--panel-bg);
	padding: 2px 6px;
	max-width: 60ch;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.viewer-actions {
	display: flex;
	gap: 6px;
	margin-left: auto;
}

.viewer-action {
	text-decoration: none;
}

.btn {
	background-color: var(--panel-bg);
	color: var(--text-color);
	border: 1px solid var(--border-color);
	padding: 4px 8px;
	cursor: pointer;
	text-decoration: none;
	display: inline-block;
}

.btn:hover {
	background-color: var(--hover-bg);
}

.label {
	font-weight: 600;
}

.form-actions {
	margin-top: 6px;
	display: flex;
	gap: 6px;
}

.viewer {
	overflow-x: auto;
	font-family: ui-monospace, monospace;
}

.viewer__row {
	margin: 1px 0;
	white-space: nowrap;
	display: flex;
	align-items: flex-start;
}

.viewer__line-number {
	color: var(--muted-text);
	cursor: pointer;
	user-select: none;
	padding-right: 10px;
	border-right: 1px solid var(--border-color);
	margin-right: 10px;
	min-width: 3em;
	text-align: right;
}

.viewer__line-number:hover {
	background-color: var(--hover-bg);
}

.viewer__line-content {
	white-space: pre;
	display: inline-block;
}

.comment {
	background-color: var(--comment-bg);
	padding: 4px 6px;
	margin: 4px 0;
	border-left: 2px solid var(--comment-border);
	overflow-x: auto;
	white-space: pre-wrap;
}

.comment-form {
	display: none;
	margin: 8px 0;
	padding: 8px;
	background-color: var(--panel-bg);
	border: 1px solid var(--border-color);
}

.comment-toggle {
	position: absolute;
	left: -9999px;
}

.comment-toggle:checked + .comment-form {
	display: block;
}

.textarea {
	width: 100%;
	height: 60px;
	background-color: var(--bg-color);
	color: var(--text-color);
	border: 1px solid var(--border-color);
	padding: 6px;
	resize: vertical;
}

.title {
	margin: 0 0 8px;
}

.auto-link {
	text-decoration: underline;
}

.visually-hidden {
	position: absolute !important;
	height: 1px;
	width: 1px;
	overflow: hidden;
	clip: rect(1px, 1px, 1px, 1px);
	white-space: nowrap;
}

.viewer .chroma,
.viewer .bg {
	background-color: transparent;
}

.viewer .chroma .line,
.viewer .chroma .cl {
	display: contents;
}

.viewer__line-content > .chroma {
	display: inline;
	white-space: pre;
}

.viewer__line-content > .chroma:empty::after {
	content: "\00a0";
}

.viewer .chroma .hl {
	background-color: var(--hover-bg);
}

button,
input,
select,
textarea,
.viewer,
.viewer code,
.viewer pre,
.viewer .chroma {
	font-size: inherit;
	line-height: inherit;
}