/* Inter font - Variable font for better performance */
@font-face {
	font-family: InterVariable;
	font-style: normal;
	font-weight: 100 900;
	font-display: swap;
	src: url("../fonts/inter/InterVariable.woff2") format("woff2");
}

@font-face {
	font-family: InterVariable;
	font-style: italic;
	font-weight: 100 900;
	font-display: swap;
	src: url("../fonts/inter/InterVariable-Italic.woff2") format("woff2");
}

/* CSS Variables - Clean documentation style */
:root {
	--font-sans: 'InterVariable', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	--font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

	--color-bg: #fafafa;
	--color-surface: #ffffff;
	--color-text: #18181b;
	--color-text-secondary: #52525b;
	--color-text-tertiary: #71717a;
	--color-border: #e5e5e7;
	--color-border-light: #f4f4f5;
	--color-accent: #18181b;
	--color-accent-hover: #27272a;
	--color-code-bg: #1e1e1e;
	--color-tag-bg: #f4f4f5;
	--color-tag-text: #52525b;

	--spacing-xs: 0.25rem;
	--spacing-sm: 0.5rem;
	--spacing-md: 1rem;
	--spacing-lg: 1.5rem;
	--spacing-xl: 2rem;
	--spacing-2xl: 3rem;
	--spacing-3xl: 4rem;

	--border-radius: 0.375rem;
	--border-radius-lg: 0.5rem;

	--header-height: 4rem;
	--max-width-content: 48rem;
	--max-width-container: 80rem;
}

/* Force light mode always - no dark mode */

/* Reset and base styles */
*, *::before, *::after {
	box-sizing: border-box;
}

* {
	margin: 0;
	padding: 0;
}

html {
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	font-family: var(--font-sans);
	font-size: 14px;
	line-height: 1.6;
	color: var(--color-text);
	background: var(--color-bg);
	background-image:
		linear-gradient(to right, #f7f7f8 1px, transparent 1px),
		linear-gradient(to bottom, #f7f7f8 1px, transparent 1px);
	background-size: 24px 24px;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
	font-weight: 600;
	line-height: 1.3;
	letter-spacing: -0.02em;
}

h1 { font-size: 2.25rem; margin-bottom: var(--spacing-lg); }
h2 { font-size: 1.875rem; margin-bottom: var(--spacing-md); }
h3 { font-size: 1.5rem; margin-bottom: var(--spacing-md); }
h4 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }
h5 { font-size: 1.125rem; margin-bottom: var(--spacing-sm); }
h6 { font-size: 1rem; margin-bottom: var(--spacing-sm); }

p {
	margin-bottom: var(--spacing-lg);
}

a {
	color: var(--color-accent);
	text-decoration: none;
	transition: color 0.2s ease;
}

a:hover {
	color: var(--color-accent-hover);
}

/* Code blocks - VS Code style */
code {
	font-family: var(--font-mono);
	font-size: 0.875em;
	background-color: var(--color-tag-bg);
	color: var(--color-text);
	padding: 0.125rem 0.375rem;
	border-radius: 0.25rem;
}

/* Code block window with macOS-style chrome */
pre {
	font-family: var(--font-mono);
	font-size: 0.875rem;
	line-height: 1.8;
	background-color: #1e1e1e;
	color: #d4d4d4;
	border: 1px solid #2d2d2d;
	border-radius: 0.75rem;
	padding: 0;
	overflow: hidden;
	margin: 1.5rem 0;
	position: relative;
	box-shadow:
		0 0 0 1px rgba(255, 255, 255, 0.1),
		0 20px 40px -10px rgba(0, 0, 0, 0.4);
}

pre::before {
	content: '';
	display: flex;
	align-items: center;
	background: linear-gradient(to bottom, #2d2d2d, #252525);
	border-bottom: 1px solid #1a1a1a;
	padding: 0;
	height: 2rem;
	background-image:
		radial-gradient(circle, #ff5f57 6px, transparent 6px),
		radial-gradient(circle, #febc2e 6px, transparent 6px),
		radial-gradient(circle, #28c840 6px, transparent 6px);
	background-size: 12px 12px, 12px 12px, 12px 12px;
	background-position: 0.75rem center, 1.75rem center, 2.75rem center;
	background-repeat: no-repeat;
}

pre code {
	display: block;
	background: none;
	padding: 1rem;
	border: none;
	font-size: inherit;
	color: inherit;
	overflow-x: auto;
}

.copy-button {
	position: absolute;
	top: 0.5rem;
	right: 0.5rem;
	padding: 0.25rem 0.5rem;
	font-size: 0.75rem;
	font-weight: 500;
	font-family: var(--font-sans);
	color: #a0a0a0;
	background-color: #2d2d2d;
	border: 1px solid #3d3d3d;
	border-radius: 0.25rem;
	cursor: pointer;
	opacity: 0.7;
	z-index: 10;
}

.copy-button:hover {
	opacity: 1;
	background-color: #3d3d3d;
}

.copy-button.copied {
	color: #28c840;
	border-color: #28c840;
}

/* Container */
.container {
	max-width: var(--max-width-container);
	margin: 0 auto;
	padding: 0 var(--spacing-lg);
}

/* Header - Clean and minimal */
.site-header {
	position: sticky;
	top: 0;
	z-index: 50;
	border-bottom: 1px solid var(--color-border);
	backdrop-filter: saturate(180%) blur(12px);
	background-color: rgba(250, 250, 250, 0.8);
	padding: 1rem 0;
}

.header-content {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.header-left {
	display: flex;
	align-items: center;
	gap: var(--spacing-md);
	min-width: 0;
}

.site-title {
	font-size: 1.125rem;
	font-weight: 600;
	margin: 0;
	color: var(--color-text);
	flex-shrink: 0;
}

.site-title a {
	color: var(--color-text);
	text-decoration: none;
}

.site-title a:hover {
	color: var(--color-text);
}

.header-page-title {
	font-size: 0.9375rem;
	font-weight: 500;
	color: var(--color-text-secondary);
	opacity: 0;
	transform: translateY(-4px);
	transition: opacity 0.3s ease, transform 0.3s ease;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	max-width: 30rem;
	padding-left: var(--spacing-md);
	border-left: 1px solid var(--color-border);
}

.header-page-title.visible {
	opacity: 1;
	transform: translateY(0);
}

.site-nav {
	display: flex;
	gap: var(--spacing-md);
	align-items: center;
}

.nav-link {
	color: var(--color-text-secondary);
	font-size: 1.25rem;
	transition: color 0.2s ease;
}

.nav-link:hover {
	color: var(--color-accent);
}

.header-back-link {
	font-size: 0.875rem;
	color: var(--color-text-secondary);
	text-decoration: none;
	opacity: 0;
	transform: translateY(-4px);
	transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s ease;
	white-space: nowrap;
	order: -1;
}

.header-back-link:hover {
	color: var(--color-accent);
}

.header-back-link.visible {
	opacity: 1;
	transform: translateY(0);
}

/* Layout */
.site-layout {
	display: flex;
	flex: 1;
	max-width: var(--max-width-content);
	margin: 0 auto;
	width: 100%;
	padding: var(--spacing-lg) var(--spacing-lg);
}

/* Main content */
.main-content {
	flex: 1;
	min-width: 0;
	width: 100%;
}

/* Page article */
.page-article {
	margin-bottom: var(--spacing-3xl);
}

.page-nav {
	display: flex;
	justify-content: flex-end;
	align-items: center;
}

.back-link {
	font-size: 0.875rem;
	color: var(--color-text-secondary);
	text-decoration: none;
	transition: color 0.2s ease;
}

.back-link:hover {
	color: var(--color-accent);
}

.page-header {
	margin-bottom: var(--spacing-lg);
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: var(--spacing-md);
}

.page-title {
	font-size: 1.5rem;
	font-weight: 600;
	line-height: 1.4;
	color: var(--color-text);
	margin-bottom: var(--spacing-xs);
}

.page-date {
	display: block;
	font-size: 0.875rem;
	color: var(--color-text-tertiary);
	margin-bottom: var(--spacing-md);
}

.page-tags {
	display: flex;
	flex-wrap: wrap;
	gap: var(--spacing-sm);
	margin-top: var(--spacing-md);
}

.page-tag {
	display: inline-block;
	padding: 0.25rem 0.75rem;
	background-color: var(--color-tag-bg);
	color: var(--color-tag-text);
	font-size: 0.8125rem;
	font-weight: 500;
	border-radius: 0.375rem;
	transition: background-color 0.15s ease;
}

.page-tag:hover {
	background-color: var(--color-border);
}

.page-content {
	font-size: 0.9375rem;
	line-height: 1.7;
	color: #3f3f46;
}

.page-content img {
	max-width: 100%;
	height: auto;
	border-radius: 0.5rem;
	margin: var(--spacing-xl) 0;
}

.page-content ul,
.page-content ol {
	margin-bottom: var(--spacing-lg);
	padding-left: 2rem;
	list-style-position: outside;
}

.page-content ul {
	list-style-type: none;
}

.page-content ol {
	list-style-type: none;
	counter-reset: item;
}

.page-content li {
	margin-bottom: 0.25rem;
	padding-left: 0;
	position: relative;
}

.page-content ul > li::before {
	content: "•";
	position: absolute;
	left: -1.5rem;
	color: var(--color-text-tertiary);
	font-weight: 700;
}

.page-content ol > li {
	counter-increment: item;
}

.page-content ol > li::before {
	content: counter(item) ".";
	position: absolute;
	left: -2rem;
	color: var(--color-text-tertiary);
	font-weight: 600;
	font-size: 0.9375rem;
}

.page-content li > ul,
.page-content li > ol {
	margin-top: var(--spacing-sm);
	margin-bottom: var(--spacing-sm);
}

.page-content blockquote {
	margin: var(--spacing-xl) 0;
	padding-left: var(--spacing-lg);
	border-left: 3px solid var(--color-accent);
	color: var(--color-text-secondary);
	font-style: italic;
}

/* Info boxes / callouts */
.page-content .info-box,
.page-content .note,
.page-content .callout {
	margin: var(--spacing-lg) 0;
	padding: var(--spacing-md);
	background-color: var(--color-tag-bg);
	border-radius: 0.5rem;
	border-left: 3px solid var(--color-text-tertiary);
}

.page-content .info-box p:last-child,
.page-content .note p:last-child,
.page-content .callout p:last-child {
	margin-bottom: 0;
}

/* Tables */
.page-content table {
	width: 100%;
	margin: var(--spacing-xl) 0;
	border-collapse: collapse;
	font-size: 0.9375rem;
	line-height: 1.6;
}

.page-content thead {
	border-bottom: 1px solid var(--color-border);
}

.page-content th {
	padding: var(--spacing-md) var(--spacing-lg);
	text-align: left;
	font-weight: 600;
	font-size: 0.875rem;
	color: var(--color-text-secondary);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.page-content tbody tr {
	border-bottom: 1px solid var(--color-border-light);
}

.page-content tbody tr:last-child {
	border-bottom: none;
}

.page-content td {
	padding: var(--spacing-md) var(--spacing-lg);
	color: var(--color-text);
}


/* Responsive tables */
@media (max-width: 640px) {
	.page-content table {
		font-size: 0.875rem;
	}

	.page-content th,
	.page-content td {
		padding: var(--spacing-sm) var(--spacing-md);
	}
}

/* Post preview (home page) */
.post-preview {
	margin-bottom: var(--spacing-md);
}

.post-link {
	display: block;
	padding: var(--spacing-sm) 0;
}

.post-title {
	font-size: 1.5rem;
	font-weight: 600;
	margin-bottom: var(--spacing-xs);
	line-height: 1.4;
	color: var(--color-text);
}

.post-date {
	display: block;
	font-size: 0.875rem;
	color: var(--color-text-tertiary);
	margin-bottom: var(--spacing-sm);
}

.post-excerpt {
	font-size: 0.9375rem;
	line-height: 1.6;
	color: var(--color-text-secondary);
	margin: 0;
}

/* Empty state */
.empty-state {
	text-align: center;
	padding: var(--spacing-3xl) var(--spacing-lg);
	color: var(--color-text-secondary);
}

/* Pagination */
.pagination {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-top: var(--spacing-2xl);
	padding-top: var(--spacing-lg);
	border-top: 1px solid var(--color-border);
}

.pagination-link {
	font-size: 0.875rem;
	color: var(--color-text-secondary);
	text-decoration: none;
	padding: 0.5rem 1rem;
	border: 1px solid var(--color-border);
	border-radius: var(--border-radius);
	transition: all 0.2s ease;
}

.pagination-link:hover {
	color: var(--color-accent);
	border-color: var(--color-accent);
}

.pagination-info {
	font-size: 0.875rem;
	color: var(--color-text-tertiary);
}

/* Footer */
.site-footer {
	margin-top: auto;
	padding: var(--spacing-lg) 0;
	border-top: 1px solid var(--color-border);
	background-color: #ffffff;
}

.site-footer .container {
	text-align: center;
}

.footer-text {
	font-size: 0.875rem;
	color: var(--color-text-secondary);
	margin: 0 !important;
	line-height: 1;
}

.footer-text a {
	color: var(--color-text-secondary);
	text-decoration: underline;
}

.footer-text a:hover {
	color: var(--color-accent);
}

.separator {
	margin: 0 var(--spacing-sm);
	opacity: 0.5;
}

/* Responsive design */
@media (max-width: 768px) {
	:root {
		--header-height: 3.5rem;
	}

	.site-layout {
		padding: var(--spacing-lg);
	}

	.page-title {
		font-size: 2rem;
	}

	.post-title {
		font-size: 1.5rem;
	}

	h1 { font-size: 1.875rem; }
	h2 { font-size: 1.5rem; }
	h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
	.container {
		padding: 0 var(--spacing-md);
	}

	.site-layout {
		padding: var(--spacing-md);
	}

	.page-title {
		font-size: 1.75rem;
	}

	.post-title {
		font-size: 1.375rem;
	}
}

/* Print styles */
@media print {
	.site-header,
	.sidebar,
	.site-footer,
	.copy-button {
		display: none;
	}

	.main-content {
		max-width: 100%;
	}
}