/* ============================================================
   ronnie.wang · 网站样式（彩虹七色主题）
   主题色由每个页面注入的 :root CSS 变量驱动（var(--color-*)）。
   此处提供默认值作为回退。
   ============================================================ */

:root {
  --color-bg: #ffffff;
  --color-text: #3a3a3a;
  --color-title: #515151;
  --color-accent: #4488ff;
  --color-link: #3366cc;
  --color-code-bg: #f4f7ff;
  --color-code-text: #224499;
  --color-quote-bg: #f4f7ff;
  --color-quote-border: #4488ff;
  --color-quote-text: #595959;
  --color-divider: #aaccff;
  --color-table-border: #ccddff;
  --color-table-header-bg: #f4f7ff;

  --container-width: 720px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: Menlo, Monaco, "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

a:hover {
  text-decoration: underline;
}

/* ---------- 页头 ---------- */

.site-header {
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: 40px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.site-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-title);
}

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

.site-nav {
  display: flex;
  gap: 18px;
}

.site-nav a {
  color: var(--color-text);
  font-size: 15px;
  padding-bottom: 2px;
}

.site-nav a.active {
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  font-weight: 600;
}

/* ---------- 首页 ---------- */

.home-intro {
  color: var(--color-quote-text);
  margin-bottom: 32px;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.post-card {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-divider);
}

.post-card:last-child {
  border-bottom: none;
}

.post-card-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.4;
}

.post-card-title a {
  color: var(--color-title);
}

.post-card-title a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.post-card-meta {
  font-size: 13px;
  color: var(--color-quote-text);
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}

.post-card-summary {
  margin: 0 0 10px;
  color: var(--color-text);
}

.post-domain {
  color: var(--color-accent);
  font-size: 13px;
}

/* ---------- 标签 ---------- */

.tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-link);
  background: var(--color-code-bg);
  padding: 2px 10px;
  border-radius: 12px;
  margin: 2px 4px 2px 0;
}

.tag:hover {
  text-decoration: none;
  background: var(--color-accent);
  color: #fff;
}

.tag-count {
  opacity: 0.6;
  font-size: 12px;
}

.post-card-tags {
  margin-top: 4px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

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

.domain-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-divider);
}

/* ---------- 页面标题 ---------- */

.page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-title);
  margin: 0 0 8px;
}

.page-count {
  color: var(--color-quote-text);
  font-size: 14px;
  margin: 0 0 24px;
}

.empty {
  color: var(--color-quote-text);
}

/* ---------- 文章详情 ---------- */

.post-header {
  margin-bottom: 32px;
}

.post-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-title);
  line-height: 1.35;
  margin: 0 0 12px;
}

.post-meta {
  font-size: 14px;
  color: var(--color-quote-text);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.post-body {
  font-size: 16px;
}

.post-body h1,
.post-body h2,
.post-body h3 {
  color: var(--color-title);
  line-height: 1.4;
}

.post-body h2 {
  font-size: 21px;
  margin: 40px 0 16px;
  /* 荧光笔高亮，呼应公众号风格 */
  display: inline-block;
  background: linear-gradient(transparent 60%, var(--color-accent) 40%);
  background-size: 100% 100%;
  padding: 0 6px;
}

.post-body h2::before {
  content: "";
}

.post-body h3 {
  font-size: 18px;
  margin: 28px 0 12px;
  border-left: 3px solid var(--color-accent);
  padding-left: 12px;
}

.post-body p {
  margin: 0 0 16px;
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 2px 6px;
  border-radius: 3px;
}

.post-body pre {
  background: var(--color-code-bg);
  padding: 16px;
  overflow-x: auto;
  border-radius: 6px;
  margin: 20px 0;
}

.post-body pre code {
  background: transparent;
  color: var(--color-code-text);
  padding: 0;
  font-size: 13px;
  line-height: 1.6;
}

.post-body blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  background: var(--color-quote-bg);
  border-left: 4px solid var(--color-quote-border);
  color: var(--color-quote-text);
}

.post-body blockquote p:last-child {
  margin-bottom: 0;
}

.post-body ul,
.post-body ol {
  padding-left: 24px;
  margin: 12px 0;
}

.post-body li {
  margin-bottom: 8px;
}

.post-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 20px auto;
  border-radius: 6px;
}

.post-body figure.mermaid {
  margin: 24px 0;
  text-align: center;
}

.post-body figure.mermaid img {
  margin: 0 auto;
  max-width: 100%;
}

.post-body hr {
  border: none;
  height: 1px;
  background: var(--color-divider);
  margin: 32px 0;
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}

.post-body th,
.post-body td {
  border: 1px solid var(--color-table-border);
  padding: 10px 12px;
  text-align: left;
}

.post-body th {
  background: var(--color-table-header-bg);
  font-weight: 600;
}

.post-wechat {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--color-divider);
  font-size: 14px;
}

.post-end {
  text-align: center;
  color: var(--color-divider);
  margin-top: 48px;
  font-size: 13px;
  letter-spacing: 4px;
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: 64px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--color-divider);
  color: var(--color-quote-text);
  font-size: 13px;
  text-align: center;
}

/* ---------- 响应式 ---------- */

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }
  .post-title {
    font-size: 24px;
  }
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}