/* Retro Vaporwave/Terminal-ish theme but with readable fonts */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;700&family=JetBrains+Mono:wght@400;700&display=swap');

:root, :root[data-theme="dark"] {
	color-scheme: dark;
	--bg: #0b0e14;
	--text-color: #d1d5db;
	--text-color-light: #9ca3af;
	--link-color: #ff00ff; /* Neon Pink */
	--link-color-visited: #bd00bd;
	--accent: #00ffff; /* Neon Cyan */
	--gray-light: #161b22;
	--gray-medium: #30363d;
	--gray-dark: #000;
	--surface: #121820;
	--border: #30363d;
}

:root[data-theme="light"] {
	color-scheme: light;
	--bg: #f0f4f8;
	--text-color: #1f2937;
	--text-color-light: #4b5563;
	--link-color: #d900d9;
	--link-color-visited: #9e009e;
	--accent: #00a3a3;
	--gray-light: #ffffff;
	--gray-medium: #cbd5e1;
	--gray-dark: #111827;
	--surface: #ffffff;
	--border: #e2e8f0;
}

@media (prefers-color-scheme: light) {
	:root:not([data-theme="dark"]) {
		color-scheme: light;
		--bg: #f0f4f8;
		--text-color: #1f2937;
		--text-color-light: #4b5563;
		--link-color: #d900d9;
		--link-color-visited: #9e009e;
		--accent: #00a3a3;
		--gray-light: #ffffff;
		--gray-medium: #cbd5e1;
		--gray-dark: #111827;
		--surface: #ffffff;
		--border: #e2e8f0;
	}
}

* {
	box-sizing: border-box;
}

body {
	font-family: 'Space Grotesk', -apple-system, system-ui, sans-serif;
	color: var(--text-color);
	background-color: var(--bg);
	line-height: 1.6;
	padding: 0;
	margin: 0;
	background-image: 
		linear-gradient(var(--gray-light) 1px, transparent 1px),
		linear-gradient(90deg, var(--gray-light) 1px, transparent 1px);
	background-size: 50px 50px;
}

.app-layout {
	display: grid;
	grid-template-columns: 320px 1fr;
	min-height: 100vh;
	transition: grid-template-columns 0.3s ease;
}

.app-layout.sidebar-collapsed-desktop {
	grid-template-columns: 0px 1fr;
}

.sidebar {
	background-color: var(--surface);
	border-right: 1px solid var(--border);
	padding: 2rem 1.5rem;
	height: 100vh;
	position: sticky;
	top: 0;
	overflow-y: auto;
	overflow-x: hidden;
	display: flex;
	flex-direction: column;
	transition: all 0.3s ease;
}

.app-layout.sidebar-collapsed-desktop .sidebar {
	padding-left: 0;
	padding-right: 0;
	border-right-width: 0;
	opacity: 0;
	pointer-events: none;
}

.sidebar-header {
	margin-bottom: 3rem;
	padding-bottom: 1.5rem;
	border-bottom: 1px solid var(--border);
}

.sidebar-title {
	font-size: 1.2rem;
	font-weight: 700;
	color: var(--accent);
	text-decoration: none;
	text-transform: uppercase;
	letter-spacing: 2px;
	display: block;
}

.chapter-nav {
	flex: 1;
}

.nav-section-title {
	font-size: 0.8rem;
	color: var(--text-color-light);
	text-transform: uppercase;
	letter-spacing: 1.5px;
	margin-bottom: 1.5rem;
	font-weight: 700;
}

.chapter-list {
	list-style: none;
	padding: 0;
	margin: 0;
}

.chapter-item {
	margin-bottom: 0.5rem;
}

.chapter-link {
	display: flex;
	flex-direction: column;
	padding: 0.75rem 1rem;
	text-decoration: none;
	border-radius: 4px;
	transition: all 0.2s;
	border: 1px solid transparent;
}

.chapter-link:hover {
	background-color: var(--gray-light);
	border-color: var(--accent);
}

.chapter-link.active {
	background-color: var(--gray-light);
	border-color: var(--accent);
	box-shadow: 3px 3px 0px var(--link-color);
}

.chapter-num {
	font-size: 0.7rem;
	font-family: 'JetBrains Mono', monospace;
	color: var(--link-color);
	font-weight: 700;
	margin-bottom: 0.2rem;
}

.chapter-name {
	font-size: 0.95rem;
	color: var(--text-color);
	font-weight: 400;
}

.chapter-link.active .chapter-name {
	color: var(--accent);
	font-weight: 700;
}

.container {
	max-width: 90em;
	width: 100%;
	margin: 0 auto;
	padding: 0 4rem;
	background-color: var(--bg);
	min-height: 100vh;
	border-left: none;
	border-right: none;
}

.mobile-only {
	display: none;
	background: none;
	border: none;
	color: var(--accent);
	cursor: pointer;
	padding: 0.5rem;
}
.mobile-only svg {
	width: 24px;
	height: 24px;
}
#theme-toggle {
	background: none;
	border: none;
	color: var(--accent);
	cursor: pointer;
	padding: 0.5rem;
}

#desktop-menu-close {
	background: none;
	border: none;
	color: var(--text-color-light);
	cursor: pointer;
	padding: 0.5rem;
	transition: color 0.2s;
}

#desktop-menu-close:hover {
	color: var(--accent);
}

#desktop-menu-open {
	display: none;
	background: none;
	border: none;
	color: var(--accent);
	cursor: pointer;
	padding: 0.5rem;
}

.app-layout.sidebar-collapsed-desktop #desktop-menu-open {
	display: inline-flex;
}

@media (max-width: 1000px) {
	.mobile-only {
		display: inline-flex;
	}
	.desktop-only {
		display: none !important;
	}
	.app-layout {
		display: block;
	}
	.app-layout.sidebar-collapsed-desktop {
		grid-template-columns: 1fr;
	}
	.sidebar {
		position: fixed;
		top: 0;
		left: -100%;
		bottom: 0;
		height: 100vh;
		width: 300px;
		max-width: 85vw;
		z-index: 100;
		border-right: 1px solid var(--border);
		transition: left 0.3s ease;
		background-color: var(--bg);
	}
	.sidebar.sidebar-open {
		left: 0;
		box-shadow: 0 0 0 100vw rgba(0,0,0,0.5);
	}
	.sidebar-header {
		display: flex;
		justify-content: space-between;
		align-items: center;
	}
	.container {
		padding: 0 1.5rem;
	}
	.chapter-list {
		display: block;
	}
}

header {
	padding: 2rem 0;
	margin-bottom: 2rem;
	border-bottom: 4px double var(--accent);
	display: flex;
	flex-wrap: wrap;
	align-items: center;
}

.home-link {
	font-size: 1.5rem;
	font-weight: 700;
	text-decoration: none;
	color: var(--accent);
	text-transform: uppercase;
	letter-spacing: 2px;
	text-shadow: 2px 2px 0px var(--link-color);
}

.nav {
	display: flex;
	list-style: none;
	padding: 0;
	margin: 0;
}

.nav-item {
	margin-left: 1.5rem;
}

.nav-item a {
	text-decoration: none;
	color: var(--text-color);
	font-weight: 700;
	text-transform: uppercase;
	font-size: 0.9rem;
	transition: color 0.2s;
}

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

.nav-item a[aria-current="page"] {
	color: var(--accent);
	border-bottom: 2px solid var(--accent);
}

main {
	padding: 1rem 0;
}

h1, h2, h3 {
	line-height: 1.2;
	font-weight: 700;
	color: var(--accent);
	text-transform: uppercase;
	letter-spacing: -0.5px;
}

h1 a, h2 a, h3 a {
	color: inherit;
	text-decoration: none;
}

h1 a:hover, h2 a:hover, h3 a:hover {
	text-decoration: underline;
}

h1 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.8rem; margin-top: 2.5rem; border-left: 4px solid var(--link-color); padding-left: 1rem; }

a {
	color: var(--link-color);
	transition: all 0.2s;
}

a:hover {
	filter: brightness(1.2);
}

.postlist {
	list-style: none;
	padding: 0;
}

.postlist-item {
	margin-bottom: 2.5rem;
	padding: 1.5rem;
	background: var(--surface);
	border: 1px solid var(--border);
	border-left: 4px solid var(--accent);
	transition: transform 0.2s, box-shadow 0.2s;
}

.postlist-item:hover {
	transform: translate(-4px, -4px);
	box-shadow: 4px 4px 0px var(--link-color);
}

.postlist-link {
	font-size: 1.4rem;
	font-weight: 700;
	text-decoration: none;
	color: var(--accent);
}

.postlist-date {
	display: block;
	font-size: 0.8rem;
	color: var(--text-color-light);
	margin: 0.5rem 0;
	font-family: 'JetBrains Mono', monospace;
}

.post-content img {
	max-width: 100%;
	height: auto;
	border: 1px solid var(--border);
	filter: contrast(1.1) brightness(0.9);
}

code {
	font-family: 'JetBrains Mono', monospace;
	background-color: var(--gray-light);
	color: var(--accent);
	padding: 0.2em 0.4em;
	border-radius: 3px;
	font-size: 0.9em;
}

pre {
	padding: 1.5rem;
	overflow-x: auto;
	background-color: #011627; /* Night Owl-ish dark */
	border-radius: 0;
	border: 1px solid var(--accent);
	box-shadow: 5px 5px 0px var(--gray-medium);
	margin: 2rem 0;
}

pre code {
	background: transparent;
	padding: 0;
	color: inherit;
}

footer {
	margin-top: 5rem;
	padding: 3rem 0;
	border-top: 4px double var(--border);
	color: var(--text-color-light);
	font-size: 0.8rem;
	text-align: center;
	text-transform: uppercase;
	letter-spacing: 1px;
}

.post-tag {
	display: inline-block;
	font-size: 0.7rem;
	padding: 0.2rem 0.5rem;
	background-color: var(--gray-medium);
	color: var(--text-color);
	border-radius: 0;
	text-decoration: none;
	margin-right: 0.5rem;
	font-weight: 700;
}

.post-metadata {
	font-style: italic;
	margin-bottom: 2rem;
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.9rem;
}

/* Home Page Header Specific */
.home-header {
	padding: 4rem 2rem;
	margin-bottom: 3rem;
	background: linear-gradient(135deg, var(--gray-light) 0%, var(--bg) 100%);
	border: 2px solid var(--accent);
	position: relative;
	overflow: hidden;
}

.home-header::after {
	content: "";
	position: absolute;
	top: 0; left: 0; right: 0; bottom: 0;
	background: repeating-linear-gradient(0deg, rgba(0, 255, 255, 0.03) 0px, transparent 1px, transparent 2px);
	pointer-events: none;
}

.home-header h1 {
	font-size: 4rem;
	margin: 0;
	color: var(--accent);
	text-shadow: 3px 3px 0px var(--link-color);
}

.subtitle {
	font-size: 1.2rem;
	color: var(--text-color);
	margin-top: 1rem;
	font-weight: 400;
	letter-spacing: 1px;
}

.hero-actions {
	margin-top: 2rem;
	display: flex;
	gap: 1.5rem;
	flex-wrap: wrap;
}

.cta-button {
	display: inline-block;
	padding: 1rem 2rem;
	font-size: 1.1rem;
	font-weight: 700;
	text-decoration: none;
	text-transform: uppercase;
	letter-spacing: 1px;
	border: 2px solid var(--accent);
	transition: all 0.2s;
}

.cta-button.primary {
	background-color: var(--accent);
	color: #000;
	box-shadow: 4px 4px 0px var(--link-color);
}

.cta-button.primary:hover {
	transform: translate(-3px, -3px);
	box-shadow: 7px 7px 0px var(--link-color);
	filter: none;
}

.cta-button.secondary {
	background-color: transparent;
	color: var(--accent);
}

.cta-button.secondary:hover {
	background-color: var(--gray-light);
	box-shadow: 4px 4px 0px var(--link-color);
	filter: none;
}

.features-section {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 2rem;
	margin-bottom: 4rem;
}

.feature-card {
	padding: 2rem;
	background-color: var(--surface);
	border: 1px solid var(--border);
	border-top: 4px solid var(--accent);
}

.feature-title {
	margin-top: 0;
	font-size: 1.2rem;
	color: var(--text-color);
}

.curriculum-preview {
	margin-bottom: 4rem;
}

.curriculum-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 1.5rem;
}

.curriculum-card {
	display: flex;
	flex-direction: column;
	padding: 1.5rem;
	background-color: var(--surface);
	border: 1px solid var(--border);
	text-decoration: none;
	color: inherit;
	transition: all 0.2s;
	border-left: 3px solid transparent;
}

.curriculum-card:hover {
	transform: translateY(-4px);
	border-left-color: var(--accent);
	border-color: var(--border);
	box-shadow: 4px 4px 0px var(--link-color);
	filter: none;
}

.curriculum-num {
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.75rem;
	color: var(--link-color);
	font-weight: 700;
	text-transform: uppercase;
	margin-bottom: 0.5rem;
}

.curriculum-title {
	margin: 0 0 0.5rem 0;
	font-size: 1.2rem;
	color: var(--accent);
}

.curriculum-excerpt {
	font-size: 0.9rem;
	color: var(--text-color-light);
	margin: 0 0 1.5rem 0;
	flex: 1;
}

.curriculum-meta {
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.8rem;
	color: var(--text-color-light);
}

/* Pagination Nav */
.pagination-nav {
	display: flex;
	justify-content: space-between;
	margin-top: 5rem;
	padding: 2rem 0;
	border-top: 1px solid var(--border);
	gap: 2rem;
}

.pagination-link {
	flex: 1;
	display: flex;
	flex-direction: column;
	padding: 1.5rem;
	background: var(--surface);
	border: 1px solid var(--border);
	text-decoration: none;
	transition: all 0.2s;
	max-width: 50%;
}

.pagination-link.previous {
	align-items: flex-start;
	text-align: left;
}

.pagination-link.next {
	align-items: flex-end;
	text-align: right;
	border-right: 4px solid var(--accent);
}

.pagination-link.previous {
	border-left: 4px solid var(--link-color);
}

.pagination-link:hover {
	transform: translateY(-4px);
	border-color: var(--accent);
	box-shadow: 4px 4px 0px var(--link-color);
}

.pagination-label {
	font-size: 0.7rem;
	font-family: 'JetBrains Mono', monospace;
	color: var(--text-color-light);
	text-transform: uppercase;
	margin-bottom: 0.5rem;
}

.pagination-title {
	font-size: 1.1rem;
	font-weight: 700;
	color: var(--accent);
}

.pagination-spacer {
	flex: 1;
}

@media (max-width: 600px) {
	.pagination-nav {
		flex-direction: column;
	}
	.pagination-link {
		max-width: 100%;
	}
}

/* Markdown Alerts */
.markdown-alert {
	padding: 1rem 1.5rem;
	margin-bottom: 1.5rem;
	border-left: 4px solid var(--accent);
	background-color: var(--surface);
	border-radius: 4px;
	box-shadow: 2px 2px 0px var(--link-color);
}
.markdown-alert-title {
	display: flex;
	align-items: center;
	font-weight: 700;
	margin-top: 0;
	margin-bottom: 0.5rem;
	text-transform: uppercase;
	letter-spacing: 1px;
}
.markdown-alert-title svg {
	margin-right: 0.5rem;
	width: 1.2rem;
	height: 1.2rem;
	fill: currentColor;
}
.markdown-alert-note { border-color: #0969da; }
.markdown-alert-note .markdown-alert-title { color: #0969da; }
.markdown-alert-tip { border-color: var(--accent); }
.markdown-alert-tip .markdown-alert-title { color: var(--accent); }
.markdown-alert-important { border-color: #8250df; }
.markdown-alert-important .markdown-alert-title { color: #8250df; }
.markdown-alert-warning { border-color: #bf8700; }
.markdown-alert-warning .markdown-alert-title { color: #bf8700; }
.markdown-alert-caution { border-color: #cf222e; }
.markdown-alert-caution .markdown-alert-title { color: #cf222e; }

/* Adjust pre margin to account for alerts */
.markdown-alert > :last-child { margin-bottom: 0; }

/* TOC Layout */
.content-wrapper {
	display: flex;
	gap: 2rem;
	position: relative;
}
.post-content {
	flex: 1;
	min-width: 0;
}
.toc-sidebar {
	display: none;
}

@media (min-width: 1300px) {
	.content-wrapper {
		display: grid;
		grid-template-columns: 1fr 250px;
	}
	.toc-sidebar {
		display: block;
	}
	.toc-sticky {
		position: sticky;
		top: 2rem;
		max-height: calc(100vh - 4rem);
		overflow-y: auto;
	}
	.toc-sticky .nav-section-title {
		margin-bottom: 0.5rem;
	}
	.toc-sticky nav ol {
		list-style: none;
		padding-left: 0;
		font-size: 0.85rem;
	}
	.toc-sticky nav ol ol {
		padding-left: 1rem;
		margin-top: 0.25rem;
	}
	.toc-sticky nav li {
		margin-bottom: 0.5rem;
	}
	.toc-sticky nav a {
		color: var(--text-color-light);
		text-decoration: none;
		transition: color 0.2s;
	}
	.toc-sticky nav a:hover {
		color: var(--accent);
	}
}

/* Skip Link */
.skip-link {
	position: absolute;
	top: -40px;
	left: 0;
	background: var(--accent);
	color: #000;
	padding: 8px;
	z-index: 1000;
	font-weight: 700;
	transition: top 0.2s;
}
.skip-link:focus {
	top: 0;
}

/* Copy Button */
pre {
	position: relative;
}
.copy-btn {
	position: absolute;
	top: 0.5rem;
	right: 0.5rem;
	background-color: var(--gray-medium);
	color: var(--text-color);
	border: 1px solid var(--accent);
	padding: 0.2rem 0.6rem;
	font-family: 'JetBrains Mono', monospace;
	font-size: 0.7rem;
	cursor: pointer;
	border-radius: 0;
	opacity: 0;
	transition: all 0.2s;
}
pre:hover .copy-btn, .copy-btn:focus {
	opacity: 1;
}
.copy-btn:hover {
	background-color: var(--accent);
	color: #000;
}

/* Pagefind Customization */
.search-wrapper {
	margin-right: auto;
	margin-left: 2rem;
	flex: 1;
	max-width: 300px;
}
@media (max-width: 800px) {
	.search-wrapper {
		order: 3;
		margin-left: 0;
		margin-top: 1rem;
		max-width: 100%;
		width: 100%;
	}
}
:root {
	--pagefind-ui-scale: 0.8;
	--pagefind-ui-primary: var(--accent);
	--pagefind-ui-text: var(--text-color);
	--pagefind-ui-background: var(--surface);
	--pagefind-ui-border: var(--border);
	--pagefind-ui-tag: var(--gray-medium);
}

/* Sidebar Modules */
.module-details {
	margin-bottom: 0.5rem;
}

.module-details:not(:last-child) {
	border-bottom: 1px solid var(--border);
	padding-bottom: 0.5rem;
}

.module-summary {
	font-size: 0.9rem;
	font-weight: 700;
	color: var(--accent);
	cursor: pointer;
	padding: 0.5rem;
	user-select: none;
	transition: all 0.2s;
	border-radius: 4px;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.module-summary:hover {
	background-color: var(--gray-light);
}

.module-details[open] .module-summary {
	color: var(--text-color);
	margin-bottom: 0.5rem;
}

.module-list {
	padding-left: 0.5rem;
	border-left: 2px solid var(--border);
	margin-left: 0.5rem;
}