/*
Theme Name: SysAdmin Dark Mode
Author: 司陌笙
Description: 求职导向型运维博客主题，极简深色系，终端风格。
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: sysadmin-dark
Tags: dark, one-column, two-columns, right-sidebar, custom-menu, featured-images, threaded-comments
*/

:root {
	--color-bg: #1e1e1e;
	--color-bg-card: #252525;
	--color-text: #e0e0e0;
	--color-text-muted: #a0a0a0;
	--color-accent-green: #00ff88;
	--color-accent-blue: #00aaff;
	--color-code-bg: #0d1117;
	--color-border: #333333;
	--font-mono: "Hack", "Fira Code", "Source Code Pro", Consolas, monospace;
	--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	--max-width: 1200px;
	--spacing-sm: 0.5rem;
	--spacing-md: 1rem;
	--spacing-lg: 2rem;
	--spacing-xl: 3rem;
	--border-radius: 6px;
}

html {
	box-sizing: border-box;
	color-scheme: dark;
	scroll-behavior: smooth;
}

*,
*::before,
*::after {
	box-sizing: inherit;
	margin: 0;
	padding: 0;
}

body {
	font-family: var(--font-sans);
	color: var(--color-text);
	line-height: 1.7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
	font-family: var(--font-mono);
	color: #fff;
	margin-bottom: var(--spacing-sm);
}

h1 {
	font-size: 2rem;
}

h2 {
	font-size: 1.6rem;
}

h3 {
	font-size: 1.3rem;
}

h4 {
	font-size: 1.1rem;
}

a {
	color: var(--color-accent-blue);
	text-decoration: none;
}

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

code {
	background: var(--color-code-bg);
	padding: 2px 6px;
	border-radius: 3px;
	font-family: var(--font-mono);
	font-size: 0.9em;
}

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

.site-content {
	display: grid;
	grid-template-columns: 1fr 320px;
	gap: var(--spacing-lg);
	padding: var(--spacing-lg) 0;
}

.site-header {
	background: #161616;
	border-bottom: 1px solid var(--color-border);
	position: sticky;
	top: 0;
	z-index: 100;
}

.site-header .container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 0.8rem var(--spacing-lg);
}

.site-branding a {
	font-family: var(--font-mono);
	font-size: 1.4rem;
	font-weight: 700;
	color: var(--color-accent-green);
	text-decoration: none;
}

.main-nav ul {
	display: flex;
	list-style: none;
	gap: var(--spacing-lg);
}

.main-nav a {
	color: var(--color-text-muted);
	font-family: var(--font-mono);
	font-size: 0.9rem;
	text-decoration: none;
	padding: 0.3rem 0;
	border-bottom: 2px solid transparent;
	transition: color 0.2s, border-color 0.2s;
}

.main-nav a:hover,
.main-nav .current-menu-item a {
	color: var(--color-accent-green);
	border-bottom-color: var(--color-accent-green);
}

.menu-toggle {
	display: none;
}

.menu-toggle-label {
	display: none;
	cursor: pointer;
	color: var(--color-accent-green);
	font-family: var(--font-mono);
	font-size: 1.5rem;
}

.site-sidebar .sidebar-avatar img {
	width: 132px;
	height: 166px;
	border-radius: 14px;
	border: 3px solid var(--color-accent-green);
	object-fit: cover;
	object-position: center 22%;
	box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
	display: block;
	margin: 0 auto var(--spacing-md);
}

.sidebar-intro h3 {
	text-align: center;
	color: #fff;
	font-family: var(--font-mono);
}

.sidebar-intro p {
	text-align: center;
	color: var(--color-text-muted);
	font-size: 0.9rem;
}

.sidebar-skills {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	justify-content: center;
	margin: var(--spacing-md) 0;
}

.skill-tag {
	display: inline-block;
	padding: 0.25rem 0.75rem;
	border: 1px solid var(--color-accent-green);
	border-radius: 20px;
	color: var(--color-accent-green);
	font-family: var(--font-mono);
	font-size: 0.8rem;
	transition: background-color 0.2s, color 0.2s;
}

.skill-tag:hover {
	background-color: var(--color-accent-green);
	color: #1e1e1e;
}

.sidebar-widget {
	background: var(--color-bg-card);
	border-radius: var(--border-radius);
	padding: var(--spacing-md);
	margin-bottom: var(--spacing-md);
}

.sidebar-widget h4 {
	font-family: var(--font-mono);
	color: var(--color-accent-blue);
	margin-bottom: var(--spacing-sm);
	font-size: 0.95rem;
}

.sidebar-widget ul {
	list-style: none;
	padding: 0;
}

.sidebar-widget li {
	padding: 0.3rem 0;
	border-bottom: 1px solid var(--color-border);
}

.sidebar-widget li:last-child {
	border-bottom: none;
}

.sidebar-widget a {
	color: var(--color-text-muted);
	font-size: 0.9rem;
	text-decoration: none;
}

.sidebar-widget a:hover {
	color: var(--color-accent-green);
}

.post-card {
	background: var(--color-bg-card);
	border-radius: var(--border-radius);
	padding: var(--spacing-lg);
	margin-bottom: var(--spacing-lg);
	border-left: 3px solid transparent;
	transition: border-color 0.2s;
}

.post-card:hover {
	border-left-color: var(--color-accent-green);
}

.post-card h2 a {
	color: #fff;
	text-decoration: none;
	transition: color 0.2s;
}

.post-card h2 a:hover {
	color: var(--color-accent-green);
}

.post-meta {
	color: var(--color-text-muted);
	font-size: 0.85rem;
	font-family: var(--font-mono);
	margin-bottom: var(--spacing-sm);
}

.post-meta .cat-links a {
	color: var(--color-accent-blue);
}

.post-excerpt {
	color: var(--color-text);
	line-height: 1.8;
}

.read-more {
	display: inline-block;
	color: var(--color-accent-green);
	font-family: var(--font-mono);
	font-size: 0.9rem;
	margin-top: var(--spacing-sm);
	text-decoration: none;
	border-bottom: 1px solid var(--color-accent-green);
}

.read-more:hover {
	color: #fff;
	border-bottom-color: #fff;
}

.single-post .entry-header h1 {
	font-size: 2rem;
	color: #fff;
	margin-bottom: var(--spacing-sm);
}

.entry-content {
	line-height: 1.8;
	font-size: 1.05rem;
}

.entry-content h2 {
	margin-top: var(--spacing-xl);
	padding-bottom: 0.5rem;
	border-bottom: 1px solid var(--color-border);
}

.entry-content ul,
.entry-content ol {
	padding-left: var(--spacing-lg);
}

.entry-content blockquote {
	border-left: 3px solid var(--color-accent-green);
	padding-left: var(--spacing-md);
	margin: var(--spacing-lg) 0;
	color: var(--color-text-muted);
	font-style: italic;
}

.entry-content img {
	max-width: 100%;
	height: auto;
	border-radius: var(--border-radius);
}

.entry-content table {
	width: 100%;
	border-collapse: collapse;
}

.entry-content th,
.entry-content td {
	border: 1px solid var(--color-border);
	padding: 0.5rem;
}

.entry-content th {
	background: var(--color-bg-card);
	color: #fff;
}

.post-tags {
	margin-top: var(--spacing-lg);
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
}

.post-tags a {
	display: inline-block;
	padding: 0.2rem 0.6rem;
	background: var(--color-bg-card);
	border: 1px solid var(--color-border);
	border-radius: 4px;
	color: var(--color-text-muted);
	font-size: 0.8rem;
	font-family: var(--font-mono);
	text-decoration: none;
	transition: border-color 0.2s, color 0.2s;
}

.post-tags a:hover {
	border-color: var(--color-accent-blue);
	color: var(--color-accent-blue);
}

.post-nav {
	display: flex;
	justify-content: space-between;
	margin-top: var(--spacing-xl);
	padding-top: var(--spacing-lg);
	border-top: 1px solid var(--color-border);
}

.post-nav a {
	color: var(--color-accent-blue);
	font-family: var(--font-mono);
	font-size: 0.9rem;
	text-decoration: none;
}

.post-nav a:hover {
	color: var(--color-accent-green);
}

pre {
	background: var(--color-code-bg);
	border-radius: var(--border-radius);
	padding: var(--spacing-md);
	overflow-x: auto;
	margin: var(--spacing-lg) 0;
	border: 1px solid var(--color-border);
}

pre code {
	background: none;
	padding: 0;
	font-size: 0.9rem;
	line-height: 1.6;
	font-variant-numeric: tabular-nums;
}

.comments-title {
	font-family: var(--font-mono);
	color: #fff;
}

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

.comment {
	padding: var(--spacing-md);
	margin-bottom: var(--spacing-md);
	background: var(--color-bg-card);
	border-radius: var(--border-radius);
}

.comment-author {
	font-family: var(--font-mono);
	color: var(--color-accent-green);
}

.comment-content p {
	margin: var(--spacing-sm) 0;
}

.comment-form {
	display: grid;
	gap: var(--spacing-md);
}

.comment-form label {
	font-family: var(--font-mono);
	font-size: 0.85rem;
	color: var(--color-text-muted);
}

.comment-form input,
.comment-form textarea {
	background: var(--color-code-bg);
	border: 1px solid var(--color-border);
	border-radius: var(--border-radius);
	padding: 0.6rem;
	color: var(--color-text);
	font-family: var(--font-sans);
}

.comment-form input:focus-visible,
.comment-form textarea:focus-visible {
	border-color: var(--color-accent-green);
	outline: 2px solid var(--color-accent-green);
	outline-offset: -2px;
}

.submit {
	background: var(--color-accent-green);
	color: #1e1e1e;
	border: none;
	padding: 0.6rem 1.5rem;
	border-radius: var(--border-radius);
	font-family: var(--font-mono);
	font-weight: 700;
	cursor: pointer;
	transition: background-color 0.2s;
}

.submit:hover {
	background: #00cc6e;
}

.site-footer {
	background: #161616;
	border-top: 1px solid var(--color-border);
	padding: var(--spacing-lg) 0;
	text-align: center;
	color: var(--color-text-muted);
	font-family: var(--font-mono);
	font-size: 0.85rem;
}

.site-footer a {
	color: var(--color-accent-blue);
}

.pagination {
	display: flex;
	gap: var(--spacing-sm);
	justify-content: center;
	margin: var(--spacing-xl) 0;
}

.page-numbers {
	padding: 0.4rem 0.8rem;
	border: 1px solid var(--color-border);
	border-radius: var(--border-radius);
	color: var(--color-text-muted);
	font-family: var(--font-mono);
	font-size: 0.85rem;
	text-decoration: none;
	transition: border-color 0.2s, color 0.2s;
}

.page-numbers:hover,
.page-numbers.current {
	border-color: var(--color-accent-green);
	color: var(--color-accent-green);
}

.page-numbers.current {
	background: rgba(0, 255, 136, 0.1);
}

.error-404 {
	text-align: center;
	padding: var(--spacing-xl) 0;
}

.error-404 .error-code {
	font-family: var(--font-mono);
	font-size: 6rem;
	color: var(--color-accent-green);
	font-weight: 700;
}

.terminal-line {
	font-family: var(--font-mono);
	color: var(--color-text-muted);
	margin: var(--spacing-md) 0;
}

.terminal-line .prompt {
	color: var(--color-accent-green);
}

.terminal-line .cmd {
	color: #fff;
}

.terminal-line .output {
	color: var(--color-accent-blue);
}

.search-form {
	display: flex;
}

.search-form input {
	background: var(--color-code-bg);
	border: 1px solid var(--color-border);
	border-radius: var(--border-radius) 0 0 var(--border-radius);
	padding: 0.5rem 0.8rem;
	color: var(--color-text);
	font-family: var(--font-sans);
	flex: 1;
}

.search-form button {
	background: var(--color-accent-green);
	color: #1e1e1e;
	border: none;
	padding: 0.5rem 1rem;
	border-radius: 0 var(--border-radius) var(--border-radius) 0;
	cursor: pointer;
	font-family: var(--font-mono);
}

.skip-link {
	position: absolute;
	top: -100%;
	left: 0;
	background: var(--color-accent-green);
	color: #1e1e1e;
	padding: 0.5rem 1rem;
	z-index: 999;
	font-family: var(--font-mono);
	text-decoration: none;
}

.skip-link:focus {
	top: 0;
}

*:focus-visible {
	outline: 2px solid var(--color-accent-blue);
	outline-offset: 2px;
}

a:focus-visible {
	outline: 2px solid var(--color-accent-green);
	outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		transition-duration: 0.01ms !important;
	}
}

@media (max-width: 768px) {
	.site-header .container {
		flex-wrap: wrap;
	}

	.menu-toggle-label {
		display: block;
	}

	.main-nav ul {
		flex-direction: column;
		gap: var(--spacing-sm);
	}

	.menu-toggle:not(:checked) ~ .main-nav ul {
		display: none;
	}

	.menu-toggle:checked ~ .main-nav ul {
		display: flex;
	}

	.main-nav {
		width: 100%;
	}

	.site-content {
		grid-template-columns: 1fr;
	}

	.site-sidebar {
		order: 2;
	}

	.post-nav {
		flex-direction: column;
		gap: var(--spacing-md);
	}
}

@media print {
	body {
		background: #fff;
		color: #000;
	}

	.site-header,
	.site-sidebar,
	.site-footer,
	.post-nav,
	.comments-area {
		display: none;
	}

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