/*
Theme Name: Astra Child
Template: astra
Author: chenxi
Description: zcxzy 博客的 Astra 子主题
Version: 2.0
Text Domain: astra-child
*/

/* ==========================================================================
   1. 色彩系统（OKLCH，冷灰锚点）
   --------------------------------------------------------------------------
   规则来源：Hallmark color.md
   - 不用纯黑纯白，全部朝锚点色相染色
   - 一个强调色，占视口 3% 以内
   - 中性色带锚点色相的低彩度
   ========================================================================== */

:root {
	/* 纸面 — 不是纯白 */
	--zc-paper:      oklch(98.5% 0.004 250);
	--zc-paper-2:    oklch(96.5% 0.006 250);
	--zc-paper-3:    oklch(94%   0.008 250);

	/* 墨色 — 不是纯黑 */
	--zc-ink:        oklch(22%   0.012 260);
	--zc-ink-2:      oklch(38%   0.010 255);

	/* 中性阶 */
	--zc-rule:       oklch(89%   0.008 250);
	--zc-neutral:    oklch(62%   0.008 250);
	--zc-muted:      oklch(48%   0.009 255);

	/* 强调色 — 唯一的色彩，用在链接/激活/焦点 */
	--zc-accent:     oklch(52%   0.16  255);
	--zc-accent-ink: oklch(99%   0.004 255);
	--zc-accent-soft: oklch(94%  0.03  255);

	/* 焦点环 */
	--zc-focus:      oklch(58%   0.19  255);

	/* 字体族 — 三族上限 */
	--zc-font-display: "Instrument Serif", "Fraunces", "Songti SC", "SimSun", Georgia, serif;
	--zc-font-body:    "Switzer", "General Sans", -apple-system, BlinkMacSystemFont,
	                   "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
	                   "Helvetica Neue", Arial, sans-serif;
	--zc-font-mono:    "Geist Mono", "JetBrains Mono", ui-monospace, SFMono-Regular,
	                   Menlo, Consolas, monospace;

	/* 动效 token */
	--zc-ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
	--zc-ease-in:     cubic-bezier(0.7, 0, 0.84, 0);
	--zc-dur-micro:   120ms;
	--zc-dur-short:   220ms;
	--zc-dur-long:    420ms;
}

/* ==========================================================================
   2. 排版基线
   --------------------------------------------------------------------------
   规则来源：Hallmark typography.md
   - 正文最小 16px，行高 1.5–1.65
   - 行宽 45–75 字符
   - 标题收紧字间距，小标签放宽
   ========================================================================== */

body,
button,
input,
textarea,
select {
	font-family: var(--zc-font-body);
	color: var(--zc-ink);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	background-color: var(--zc-paper);
	font-size: 16px;
	line-height: 1.65;
}

/* 标题：衬线 display，收紧字间距 */
h1, h2, h3, h4 {
	font-family: var(--zc-font-display);
	color: var(--zc-ink);
	letter-spacing: -0.02em;
	line-height: 1.25;
	font-weight: 600;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 1.9rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.4rem); letter-spacing: -0.01em; }

/* 正文段落 */
.entry-content {
	font-size: 1.0625rem;
	line-height: 1.8;
	letter-spacing: 0.005em;
	color: var(--zc-ink);
}

.entry-content p {
	margin-bottom: 1.4em;
}

/* 行宽控制 — 45–75 字符 */
.entry-content > p,
.entry-content > ul,
.entry-content > ol,
.entry-content > blockquote {
	max-width: 68ch;
}

/* 列表 */
.entry-content ul,
.entry-content ol {
	padding-left: 1.4em;
	margin-bottom: 1.4em;
}

.entry-content li {
	margin-bottom: 0.5em;
	line-height: 1.75;
}

/* 引用块 — 左侧竖线 + 弱底色 */
.entry-content blockquote {
	margin: 1.8em 0;
	padding: 1em 1.4em;
	border-left: 3px solid var(--zc-accent);
	background: var(--zc-paper-2);
	color: var(--zc-ink-2);
	font-style: normal;
	border-radius: 0 4px 4px 0;
}

.entry-content blockquote p:last-child {
	margin-bottom: 0;
}

/* 链接 */
.entry-content a,
.entry-content a:visited {
	color: var(--zc-accent);
	text-decoration: underline;
	text-decoration-thickness: 1px;
	text-underline-offset: 3px;
	transition: color var(--zc-dur-micro) var(--zc-ease-out);
}

.entry-content a:hover {
	color: var(--zc-ink);
	text-decoration-thickness: 2px;
}

/* 焦点可见性 — 无障碍必需 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
	outline: 2px solid var(--zc-focus);
	outline-offset: 2px;
	border-radius: 2px;
}

/* ==========================================================================
   3. 代码块样式（当前完全缺失）
   ========================================================================== */

/* 行内代码 */
.entry-content code {
	font-family: var(--zc-font-mono);
	font-size: 0.875em;
	background: var(--zc-paper-3);
	color: oklch(42% 0.12 25);
	padding: 0.15em 0.42em;
	border-radius: 4px;
	border: 1px solid var(--zc-rule);
	word-break: break-word;
}

/* 代码块容器 */
.entry-content pre {
	font-family: var(--zc-font-mono);
	font-size: 0.875rem;
	line-height: 1.7;
	background: oklch(24% 0.012 260);
	color: oklch(92% 0.006 250);
	padding: 1.15em 1.35em;
	border-radius: 8px;
	overflow-x: auto;
	margin: 1.8em 0;
	tab-size: 4;
	-webkit-overflow-scrolling: touch;
}

.entry-content pre code {
	background: transparent;
	border: 0;
	padding: 0;
	color: inherit;
	font-size: inherit;
	border-radius: 0;
	word-break: normal;
}

/* 代码块滚动条 */
.entry-content pre::-webkit-scrollbar {
	height: 8px;
}

.entry-content pre::-webkit-scrollbar-track {
	background: oklch(20% 0.010 260);
	border-radius: 0 0 8px 8px;
}

.entry-content pre::-webkit-scrollbar-thumb {
	background: oklch(45% 0.010 260);
	border-radius: 4px;
}

.entry-content pre::-webkit-scrollbar-thumb:hover {
	background: oklch(55% 0.010 260);
}

/* ==========================================================================
   4. 语法高亮（Prism.js token 配色）
   --------------------------------------------------------------------------
   Prism 输出的类名：token comment / keyword / string / number / function 等
   配色基于暗色底 oklch(24% 0.012 260)，对比度已按 WCAG 校验
   ========================================================================== */

.entry-content pre code .token.comment,
.entry-content pre code .token.prolog,
.entry-content pre code .token.doctype,
.entry-content pre code .token.cdata {
	color: oklch(60% 0.02 200);
	font-style: italic;
}

.entry-content pre code .token.punctuation {
	color: oklch(76% 0.008 250);
}

.entry-content pre code .token.property,
.entry-content pre code .token.tag,
.entry-content pre code .token.boolean,
.entry-content pre code .token.number,
.entry-content pre code .token.constant,
.entry-content pre code .token.symbol {
	color: oklch(78% 0.12 60);
}

.entry-content pre code .token.selector,
.entry-content pre code .token.attr-name,
.entry-content pre code .token.string,
.entry-content pre code .token.char,
.entry-content pre code .token.builtin,
.entry-content pre code .token.inserted {
	color: oklch(78% 0.13 140);
}

.entry-content pre code .token.operator,
.entry-content pre code .token.entity,
.entry-content pre code .token.url {
	color: oklch(70% 0.06 200);
}

.entry-content pre code .token.atrule,
.entry-content pre code .token.attr-value,
.entry-content pre code .token.keyword {
	color: oklch(75% 0.14 320);
}

.entry-content pre code .token.function,
.entry-content pre code .token.class-name {
	color: oklch(76% 0.11 240);
}

.entry-content pre code .token.regex,
.entry-content pre code .token.important,
.entry-content pre code .token.variable {
	color: oklch(80% 0.12 30);
}

.entry-content pre code .token.important,
.entry-content pre code .token.bold {
	font-weight: 600;
}

.entry-content pre code .token.italic {
	font-style: italic;
}

.entry-content pre code .token.deleted {
	color: oklch(70% 0.16 25);
}

/* 语言标签角标 */
.entry-content pre {
	position: relative;
}

/* ==========================================================================
   5. 首页文章网格（Astra 是 33.33% 三列布局，不能写整宽卡片）
   ========================================================================== */

.ast-blog-layout-4-grid .ast-article-post {
	margin-bottom: 2.2em;
}

.ast-blog-layout-4-grid .ast-article-inner {
	background: var(--zc-paper-2);
	border: 1px solid var(--zc-rule);
	border-radius: 10px;
	padding: 1.4em 1.35em;
	height: 100%;
	display: flex;
	flex-direction: column;
	transition: border-color var(--zc-dur-short) var(--zc-ease-out),
	            box-shadow var(--zc-dur-short) var(--zc-ease-out);
}

.ast-blog-layout-4-grid .ast-article-inner:hover {
	border-color: var(--zc-neutral);
	box-shadow: 0 4px 16px oklch(22% 0.012 260 / 0.07);
}

/* 网格内标题尺寸收紧 */
.ast-blog-layout-4-grid .entry-title {
	font-size: 1.3rem;
	line-height: 1.35;
	letter-spacing: -0.015em;
	margin-bottom: 0.5em;
}

.ast-blog-layout-4-grid .entry-title a {
	color: var(--zc-ink);
	text-decoration: none;
	transition: color var(--zc-dur-micro) var(--zc-ease-out);
}

.ast-blog-layout-4-grid .entry-title a:hover {
	color: var(--zc-accent);
}

/* 网格内摘要 */
.ast-blog-layout-4-grid .ast-excerpt-container {
	font-size: 0.9375rem;
	line-height: 1.7;
	color: var(--zc-muted);
	flex-grow: 1;
}

.ast-blog-layout-4-grid .ast-excerpt-container p {
	margin-bottom: 0;
}

/* 元信息：分类 / 日期 / 评论 */
.entry-meta,
.ast-blog-meta-container {
	font-size: 0.8125rem;
	color: var(--zc-neutral);
	letter-spacing: 0.01em;
}

.entry-meta a,
.ast-blog-meta-container a {
	color: var(--zc-muted);
	text-decoration: none;
	transition: color var(--zc-dur-micro) var(--zc-ease-out);
}

.entry-meta a:hover,
.ast-blog-meta-container a:hover {
	color: var(--zc-accent);
}

/* 分类标签做成 chip */
.cat-links a {
	display: inline-block;
	background: var(--zc-accent-soft);
	color: var(--zc-accent);
	padding: 0.15em 0.6em;
	border-radius: 999px;
	font-size: 0.75rem;
	letter-spacing: 0.02em;
	text-decoration: none;
	margin-right: 0.3em;
}

.cat-links a:hover {
	background: var(--zc-accent);
	color: var(--zc-accent-ink);
}

/* 阅读全文 */
.ast-read-more-container a,
.ast-read-more-container .ast-button {
	font-size: 0.875rem;
	color: var(--zc-accent);
	text-decoration: none;
	letter-spacing: 0.01em;
	transition: letter-spacing var(--zc-dur-short) var(--zc-ease-out);
}

.ast-read-more-container a:hover {
	letter-spacing: 0.04em;
}

/* ==========================================================================
   6. 侧边栏
   ========================================================================== */

.widget {
	background: var(--zc-paper-2);
	border: 1px solid var(--zc-rule);
	border-radius: 10px;
	padding: 1.25em 1.35em;
	margin-bottom: 1.4em;
	box-shadow: none;
}

.widget-title {
	font-family: var(--zc-font-body);
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--zc-muted);
	letter-spacing: 0.1em;
	text-transform: uppercase;
	margin-bottom: 1em;
	padding-bottom: 0.75em;
	border-bottom: 1px solid var(--zc-rule);
}

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

.widget ul li {
	padding: 0.45em 0;
	border-bottom: 1px solid var(--zc-rule);
	font-size: 0.9375rem;
	line-height: 1.55;
}

.widget ul li:last-child {
	border-bottom: 0;
}

.widget ul li a {
	color: var(--zc-ink-2);
	text-decoration: none;
	transition: color var(--zc-dur-micro) var(--zc-ease-out);
}

.widget ul li a:hover {
	color: var(--zc-accent);
}

/* 搜索框 */
.widget_search .search-form {
	display: flex;
	gap: 0.5em;
}

.widget_search input[type="search"] {
	flex: 1;
	min-width: 0;
	padding: 0.55em 0.8em;
	border: 1px solid var(--zc-rule);
	border-radius: 6px;
	background: var(--zc-paper);
	color: var(--zc-ink);
	font-size: 0.9375rem;
	transition: border-color var(--zc-dur-micro) var(--zc-ease-out);
}

.widget_search input[type="search"]:focus {
	border-color: var(--zc-accent);
	outline: none;
}

.widget_search input[type="submit"],
.widget_search button[type="submit"] {
	padding: 0.55em 1em;
	background: var(--zc-accent);
	color: var(--zc-accent-ink);
	border: 0;
	border-radius: 6px;
	font-size: 0.9375rem;
	cursor: pointer;
	transition: opacity var(--zc-dur-micro) var(--zc-ease-out);
}

.widget_search input[type="submit"]:hover,
.widget_search button[type="submit"]:hover {
	opacity: 0.86;
}

/* ==========================================================================
   7. 页头 / 页脚
   ========================================================================== */

.site-header,
.main-header-bar-wrap {
	background: var(--zc-paper);
	border-bottom: 1px solid var(--zc-rule);
}

.site-title a,
.site-title a:visited {
	font-family: var(--zc-font-display);
	font-size: 1.5rem;
	letter-spacing: -0.02em;
	color: var(--zc-ink);
	text-decoration: none;
}

.site-description {
	font-size: 0.8125rem;
	color: var(--zc-muted);
	letter-spacing: 0.03em;
}

/* 主导航 */
.main-header-menu > .menu-item > .menu-link {
	font-size: 0.9375rem;
	color: var(--zc-ink-2);
	letter-spacing: 0.005em;
	transition: color var(--zc-dur-micro) var(--zc-ease-out);
}

.main-header-menu > .menu-item > .menu-link:hover,
.main-header-menu > .menu-item.current-menu-item > .menu-link {
	color: var(--zc-accent);
}

/* 页脚 */
.site-footer,
.site-below-footer-wrap {
	background: var(--zc-paper-2);
	border-top: 1px solid var(--zc-rule);
	color: var(--zc-muted);
}

.site-footer a {
	color: var(--zc-ink-2);
	text-decoration: none;
}

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

/* ==========================================================================
   8. 单篇 / 单页容器
   ========================================================================== */

.ast-separate-container .ast-article-single,
.ast-separate-container .comment-respond {
	background: var(--zc-paper);
}

/* 单篇标题 */
.single .entry-title {
	font-size: clamp(1.9rem, 3.6vw, 2.6rem);
	letter-spacing: -0.03em;
	line-height: 1.2;
	margin-bottom: 0.6em;
}

/* 单篇 meta */
.single .entry-meta {
	padding-bottom: 1.2em;
	border-bottom: 1px solid var(--zc-rule);
	margin-bottom: 2em;
}

/* ==========================================================================
   9. 响应式
   ========================================================================== */

/* 平板：三列变两列 */
@media (max-width: 921px) {
	.ast-blog-layout-4-grid .ast-article-post {
		width: 50%;
	}

	.ast-blog-layout-4-grid .entry-title {
		font-size: 1.15rem;
	}
}

/* 手机：单列，去掉卡片内边距挤压 */
@media (max-width: 544px) {
	.ast-blog-layout-4-grid .ast-article-post {
		width: 100%;
	}

	.ast-blog-layout-4-grid .ast-article-inner {
		padding: 1.15em 1em;
	}

	.entry-content {
		font-size: 1rem;
		line-height: 1.75;
	}

	.entry-content pre {
		font-size: 0.8125rem;
		padding: 0.95em 1em;
		border-radius: 6px;
	}

	h1 { font-size: 1.75rem; }
	h2 { font-size: 1.4rem; }
	h3 { font-size: 1.15rem; }

	.widget {
		padding: 1.05em 1.1em;
	}
}

/* ==========================================================================
   10. 动效降级（无障碍必需）
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
		scroll-behavior: auto !important;
	}
}

/* ==========================================================================
   11. 打印
   ========================================================================== */

@media print {
	.site-header,
	.site-footer,
	.widget-area,
	.ast-read-more-container {
		display: none !important;
	}

	body {
		background: #fff;
		color: #000;
		font-size: 11pt;
	}

	.entry-content pre {
		background: #f5f5f5;
		color: #000;
		border: 1px solid #ddd;
	}

	a[href^="http"]::after {
		content: " (" attr(href) ")";
		font-size: 0.85em;
		color: #555;
	}
}