/*
 * blog.css — 行运阁博客样式
 * 精确复刻主站 index.css + BaikeLayout.astro 中的设计系统
 * 颜色、字体、间距、排版全部与主站一致
 */

/* ===== 1. 设计 Token (和 index.css :root 完全一致) ===== */
:root {
  --color-ink-black: #1a1a1a;
  --color-ink-grey: #4a4a4a;
  --color-ink-light: #8c8c8c;
  --color-paper: #f4f1ea;
  --color-red-stamp: #c3272b;
}

/* ===== 2. 基础重置 (和 index.css @layer base 一致) ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background-color: var(--color-paper);
  color: var(--color-ink-black);
  font-family: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

/* ===== 3. 工具类 (对应 Tailwind utilities) ===== */
.bg-paper   { background-color: var(--color-paper); }
.text-ink   { color: var(--color-ink-black); }
.min-h-screen { min-height: 100vh; }

/* Body padding: pt-0 md:pt-16 pb-16 md:pb-0 */
body { padding-top: 0; padding-bottom: 64px; }
@media (min-width: 768px) {
  body { padding-top: 64px; padding-bottom: 0; }
}

/* max-w-5xl mx-auto px-4 */
.max-w-5xl { max-width: 64rem; margin-left: auto; margin-right: auto; }

/* ===== 4. 桌面端顶部导航 (复刻 GlobalNav.astro header) ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: none; /* mobile hidden */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(244, 241, 234, 0.8);
}
@media (min-width: 768px) { .site-header { display: block; } }

.site-header__inner {
  max-width: 72rem; margin: 0 auto; padding: 0 1.5rem;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}

.site-logo { display: flex; align-items: center; gap: 0.5rem; }
.site-logo__seal {
  position: relative; width: 32px; height: 32px;
  border: 2px solid var(--color-red-stamp); color: var(--color-red-stamp);
  display: flex; align-items: center; justify-content: center;
  border-radius: 2px; transform: rotate(6deg); opacity: 0.9;
  transition: transform 0.3s;
}
.site-logo:hover .site-logo__seal { transform: rotate(12deg); }
.site-logo__seal span {
  font-weight: 700; font-size: 0.75rem;
  writing-mode: vertical-rl;
}
.site-logo__text {
  font-size: 1.25rem; font-weight: 700;
  letter-spacing: 0.1em; color: var(--color-ink-black); margin-left: 0.25rem;
}

.site-nav { display: flex; align-items: center; gap: 2.5rem; }
.site-nav a {
  position: relative; padding: 0.5rem 0; font-size: 0.875rem;
  letter-spacing: 0.1em; font-weight: 500; color: var(--color-ink-grey);
  transition: color 0.3s;
}
.site-nav a:hover { color: var(--color-ink-black); }
.site-nav a.active { color: var(--color-red-stamp); }
.site-nav a.active::after {
  content: ''; position: absolute; bottom: 0;
  left: 25%; right: 25%; height: 2px;
  background: var(--color-red-stamp); border-radius: 9999px;
}

/* ===== 5. 移动端底部导航 (复刻 GlobalNav.astro nav) ===== */
.mobile-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  background: rgba(244, 241, 234, 0.95);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.03);
  padding-bottom: env(safe-area-inset-bottom);
}
@media (min-width: 768px) { .mobile-nav { display: none; } }

.mobile-nav__inner {
  display: flex; justify-content: space-around; align-items: center;
  height: 64px; padding: 0 0.5rem;
}
.mobile-nav__inner a {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; width: 100%; height: 100%;
  color: rgba(74, 74, 74, 0.7); transition: all 0.3s;
}
.mobile-nav__inner a:hover { color: var(--color-ink-grey); }
.mobile-nav__inner a.active { color: var(--color-red-stamp); transform: scale(1.05); }
.mobile-nav__inner a span { font-size: 10px; letter-spacing: 0.05em; margin-top: 2px; }
.mobile-nav__inner svg { width: 24px; height: 24px; margin-bottom: 4px; }

/* ===== 6. 面包屑 (和 BaikeLayout nav 一致) ===== */
.breadcrumb {
  padding: 1rem 1rem;
  font-size: 0.875rem; color: var(--color-ink-grey);
}
.breadcrumb a { transition: color 0.3s; }
.breadcrumb a:hover { color: var(--color-red-stamp); }
.breadcrumb .sep { margin: 0 0.5rem; }
.breadcrumb .current { color: var(--color-red-stamp); font-weight: 700; }

/* ===== 7. 内容区 flex 布局 (和 BaikeLayout div.flex 一致) ===== */
.content-layout {
  padding: 0 1rem 4rem; display: flex; gap: 2rem;
}
.article-main { flex: 1; min-width: 0; }

/* ===== 8. 文章头部 (和 BaikeLayout header 一致) ===== */
.article-header {
  margin-bottom: 2rem; padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(140, 140, 140, 0.3);
}
.article-tag {
  display: inline-block; padding: 0.25rem 0.75rem;
  font-size: 0.75rem; letter-spacing: 0.2em;
  border: 1px solid var(--color-red-stamp);
  color: var(--color-red-stamp); margin-bottom: 1rem;
}
.article-header h1 {
  font-size: 1.875rem; font-weight: 700;
  letter-spacing: 0.05em; color: var(--color-ink-black);
  margin-bottom: 0.75rem; line-height: 1.3;
}
@media (min-width: 768px) { .article-header h1 { font-size: 2.25rem; } }
.article-desc {
  color: var(--color-ink-grey); font-size: 1.125rem; line-height: 1.7;
}
.article-header time {
  display: block; margin-top: 0.75rem;
  font-size: 0.875rem; color: var(--color-ink-light);
}

/* ===== 9. 移动端 TOC (和 BaikeLayout details 一致) ===== */
.mobile-toc {
  margin-bottom: 2rem;
  border: 1px solid rgba(140, 140, 140, 0.2);
  background: rgba(255,255,255,0.3);
}
@media (min-width: 1024px) { .mobile-toc { display: none; } }

.mobile-toc summary {
  padding: 0.75rem 1rem; font-size: 0.875rem;
  font-weight: 700; color: var(--color-ink-black);
  cursor: pointer; user-select: none; letter-spacing: 0.05em;
}
.mobile-toc__links {
  padding: 0 1rem 1rem; border-top: 1px solid rgba(140, 140, 140, 0.1);
  padding-top: 0.5rem;
}
.mobile-toc__links a {
  display: block; padding: 0.25rem 0; font-size: 0.875rem;
  color: var(--color-ink-grey); transition: color 0.3s;
}
.mobile-toc__links a:hover { color: var(--color-red-stamp); }
.mobile-toc__links a.toc-h3 {
  padding-left: 1rem; font-size: 0.75rem; color: var(--color-ink-light);
}

/* ===== 10. Prose 排版 (和 BaikeLayout .prose 完全一致) ===== */
.prose {
  font-size: 1.05rem; line-height: 1.9; letter-spacing: 0.02em;
  max-width: none;
}
.prose h2 {
  font-size: 1.5rem; font-weight: 700; letter-spacing: 0.05em;
  color: var(--color-ink-black);
  margin-top: 2.5rem; margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(140, 140, 140, 0.3);
  line-height: 1.4;
}
.prose h2:first-child { margin-top: 0.5em; }
.prose h3 {
  font-size: 1.25rem; font-weight: 700; letter-spacing: 0.05em;
  color: var(--color-ink-black);
  margin-top: 1.5rem; margin-bottom: 0.75rem;
  line-height: 1.4;
}
.prose p {
  color: var(--color-ink-black); line-height: 1.9;
  letter-spacing: 0.02em;
  margin-top: 0.6em; margin-bottom: 0.6em;
}
.prose a {
  color: var(--color-red-stamp); text-decoration: none;
}
.prose a:hover { text-decoration: underline; }
.prose strong { color: var(--color-ink-black); font-weight: 700; }
.prose blockquote {
  border-left: 4px solid var(--color-red-stamp);
  background: rgba(255,255,255,0.4);
  padding: 0.5rem 1rem; font-style: normal;
  margin: 1rem 0;
}
.prose code {
  color: var(--color-red-stamp); background: rgba(255,255,255,0.5);
  padding: 0.125rem 0.375rem; border-radius: 0.25rem;
}
.prose ul, .prose ol {
  margin-top: 0.5em; margin-bottom: 0.5em;
  padding-left: 1.5em;
}
.prose li {
  color: var(--color-ink-black);
  margin-top: 0.2em; margin-bottom: 0.2em;
}
.prose hr {
  border: none; border-top: 1px solid rgba(140, 140, 140, 0.25);
  margin: 2rem 0;
}

/* 表格 (和 BaikeLayout prose-table 一致) */
.prose table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
.prose th {
  background: rgba(26, 26, 26, 0.05);
  padding: 0.5rem 1rem; text-align: left;
  border: 1px solid rgba(140, 140, 140, 0.3);
  font-weight: 700;
}
.prose td {
  padding: 0.5rem 1rem;
  border: 1px solid rgba(140, 140, 140, 0.3);
}

/* ===== 11. CTA 导流区 (和 BaikeLayout section.cta 完全一致) ===== */
.cta-box {
  margin-top: 3rem; padding: 1.5rem 2rem;
  border: 2px dashed rgba(195, 39, 43, 0.4);
  background: rgba(255,255,255,0.3); text-align: center;
}
@media (min-width: 768px) { .cta-box { padding: 2rem; } }
.cta-box > p:first-child {
  color: var(--color-ink-grey); font-size: 1.125rem;
  margin-bottom: 1rem; letter-spacing: 0.05em;
}
.cta-btn {
  display: inline-block; padding: 0.75rem 2.5rem;
  border: 2px solid var(--color-ink-black);
  color: var(--color-ink-black); font-size: 1.125rem;
  font-weight: 700; letter-spacing: 0.15em;
  transition: all 0.3s;
}
.cta-btn:hover {
  background: var(--color-ink-black); color: var(--color-paper);
}
.cta-sub {
  color: var(--color-ink-light); font-size: 0.875rem; margin-top: 0.75rem;
}

/* ===== 12. 右侧 TOC 导航 (和 BaikeLayout aside 完全一致) ===== */
.toc-sidebar {
  display: none; width: 14rem; flex-shrink: 0;
}
@media (min-width: 1024px) { .toc-sidebar { display: block; } }

.toc-sidebar__sticky { position: sticky; top: 5rem; }
.toc-sidebar__sticky h4 {
  font-size: 0.75rem; color: var(--color-ink-light);
  letter-spacing: 0.3em; margin-bottom: 1rem;
  text-transform: uppercase;
}
.toc-sidebar__nav {
  border-left: 1px solid rgba(140, 140, 140, 0.2);
}
.toc-sidebar__nav a {
  display: block; padding: 0.25rem 0 0.25rem 0.75rem;
  transition: color 0.3s; font-size: 0.875rem;
  color: var(--color-ink-grey); font-weight: 500;
}
.toc-sidebar__nav a.toc-h3 {
  padding-left: 1.5rem; font-size: 0.75rem;
  color: var(--color-ink-light); font-weight: 400;
}
.toc-sidebar__nav a:hover { color: var(--color-red-stamp); }
.toc-sidebar__nav a.toc-active {
  color: var(--color-red-stamp);
  border-left: 2px solid var(--color-red-stamp);
  margin-left: -1px; /* 覆盖父级 border-left */
}

/* ===== 13. 博客列表页 ===== */
.blog-header {
  padding: 2rem 0 1.5rem; text-align: center;
}
.blog-header h1 {
  font-size: 2rem; font-weight: 700;
  letter-spacing: 0.1em; color: var(--color-ink-black);
  margin-bottom: 0.75rem;
}
.blog-header p {
  color: var(--color-ink-grey); font-size: 1rem; line-height: 1.8;
}

.article-card {
  display: block; padding: 1.25rem 1.5rem;
  border: 1px solid rgba(140, 140, 140, 0.15);
  margin-bottom: 0.75rem; background: rgba(255,255,255,0.3);
  transition: all 0.3s;
}
.article-card:hover {
  border-color: var(--color-red-stamp);
  background: rgba(255,255,255,0.5);
  transform: translateY(-1px);
}
.article-card h3 {
  font-size: 1.125rem; font-weight: 700;
  color: var(--color-ink-black); margin-bottom: 0.5rem;
  line-height: 1.5;
}
.card-desc {
  font-size: 0.875rem; color: var(--color-ink-grey);
  line-height: 1.6; margin-bottom: 0.75rem;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.card-meta {
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.75rem; color: var(--color-ink-light);
}
.card-tag {
  padding: 0.125rem 0.5rem;
  border: 1px solid rgba(140, 140, 140, 0.3);
  letter-spacing: 0.05em;
}

/* ===== 14. 列表页布局 (index_template.html 用到的 class) ===== */
.page-main {
  max-width: 64rem; margin: 0 auto; padding: 0 1rem 4rem;
}
.blog-list {
  max-width: 48rem; margin: 0 auto;
}

/* ===== 15. Prose 列表样式精修 (对齐 Tailwind prose 插件) ===== */
.prose ul { list-style-type: disc; }
.prose ol { list-style-type: decimal; }
.prose li::marker { color: var(--color-ink-light); }
.prose li p { margin-top: 0.25em; margin-bottom: 0.25em; }

/* ===== 16. Prose 图片 ===== */
.prose img {
  max-width: 100%; height: auto;
  margin: 1rem 0; border-radius: 4px;
}