/* ============================================================
   Clash Verge下载 · 博客样式
   博客列表页与文章页专属样式;所有视觉值引用 base.css 设计令牌
   ============================================================ */

/* ---------- 列表页:通用容器 ---------- */

.blog-wrap {
  max-width: 1040px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 列表页:Hero ---------- */

.blog-hero {
  padding-block: clamp(2.5rem, 4vw, 3.5rem) clamp(1.25rem, 2.5vw, 2rem);
  text-align: center;
}

.blog-hero h1 {
  max-width: 100%;
  margin: 0 0 0.875rem;
  font-size: clamp(1.75rem, 1.3rem + 2.4vw, 3rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.blog-lead {
  max-width: 640px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  line-height: 1.7;
}

/* ---------- 列表页:分类筛选 ---------- */

.blog-filter-bar {
  padding-block: 0.25rem 1.5rem;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.tag-filter {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.375rem 1.125rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.tag-filter:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.tag-filter.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

/* ---------- 列表页:文章卡片 ---------- */

.blog-list-sec {
  padding-block: 0.5rem clamp(3rem, 6vw, 5rem);
}

.post-count {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.post-empty {
  margin: 0;
  padding: 2rem 0;
  color: var(--text-muted);
  text-align: center;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  min-width: 0;
  padding: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.post-date {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
}

.post-tag {
  display: inline-block;
  flex: 0 0 auto;
  padding: 0.2rem 0.625rem;
  border: 1px solid var(--line-violet);
  border-radius: var(--r-pill);
  background: var(--line-violet);
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
}

.post-card-title {
  margin: 0;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  line-height: 1.45;
  font-weight: 700;
}

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

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

.post-card-summary {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.post-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: auto;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
}

.post-card-link svg {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.post-card-link:hover {
  color: var(--accent-dark);
}

/* ---------- 文章页:页头(面包屑) ---------- */

.article-top {
  padding-top: 1.25rem;
}

.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs,
nav.crumb,
nav.crumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 820px;
  margin: 1.5rem auto 1.25rem;
  padding-inline: var(--gutter);
  overflow: hidden;
  white-space: nowrap;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.45;
}

nav.breadcrumb ol,
nav.breadcrumbs ol,
nav.crumb ol,
nav.crumbs ol {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

nav.breadcrumb ol li,
nav.breadcrumbs ol li,
nav.crumb ol li,
nav.crumbs ol li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

nav.breadcrumb ol li[aria-current="page"],
nav.breadcrumbs ol li[aria-current="page"],
nav.crumb ol li[aria-current="page"],
nav.crumbs ol li[aria-current="page"] {
  display: block;
  min-width: 0;
  max-width: 30ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.blog-breadcrumb a,
nav.breadcrumb a,
nav.breadcrumbs a {
  flex: 0 0 auto;
  color: var(--text-muted);
  opacity: 0.6;
  text-decoration: none;
}

.blog-breadcrumb a:hover,
nav.breadcrumb a:hover,
nav.breadcrumbs a:hover {
  color: var(--accent);
  opacity: 1;
}

.blog-breadcrumb .bc-sep,
.blog-breadcrumb .sep,
nav.breadcrumb .bc-sep,
nav.breadcrumb .sep,
nav.breadcrumbs .bc-sep,
nav.breadcrumbs .sep {
  flex: 0 0 auto;
  color: var(--text-muted);
  opacity: 0.35;
}

.blog-breadcrumb [aria-current="page"],
nav.breadcrumb [aria-current="page"],
nav.breadcrumbs [aria-current="page"] {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 30ch;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-muted);
  opacity: 1;
}

/* ---------- 文章页:Hero ---------- */

.article-hero {
  max-width: 820px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: 0 1.75rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.75rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}

.article-meta .meta-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

.article-hero h1 {
  max-width: 100%;
  margin-block: 0.875rem 0.75rem;
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.article-lead {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  line-height: 1.7;
}

/* ---------- 文章页:正文 ---------- */

.post {
  max-width: 820px;
  margin-inline: auto;
}

.article-body,
.post-body {
  max-width: 820px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: 0 1.5rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.85;
  overflow-wrap: break-word;
}

.article-body p,
.post-body p {
  margin: 0 0 1.125rem;
}

.article-body h2,
.post-body h2 {
  margin: 2.25rem 0 0.875rem;
  font-size: clamp(1.25rem, 1.05rem + 0.8vw, 1.5rem);
  line-height: 1.45;
  font-weight: 700;
}

.article-body h2:first-of-type {
  margin-top: 0;
}

.article-body h3,
.post-body h3 {
  margin: 1.75rem 0 0.625rem;
  font-size: clamp(1.0625rem, 0.95rem + 0.5vw, 1.25rem);
  line-height: 1.5;
  font-weight: 700;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.25rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body li:last-child {
  margin-bottom: 0;
}

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-panel) var(--r-panel) 0;
  background: var(--bg-panel);
  color: var(--text);
}

.article-body blockquote p {
  margin: 0;
}

.article-body pre {
  margin: 1.5rem 0;
  padding: 1.125rem 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-panel);
  background: var(--bg-panel2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
}

.article-body pre code {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font-size: inherit;
}

.article-body :not(pre) > code {
  padding: 0.15em 0.4em;
  border: 1px solid var(--border);
  border-radius: calc(var(--r-panel) / 3);
  background: var(--bg-panel);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.875em;
}

.article-body a:not([class*="btn"]):not([class*="button"]),
.article-prose a:not([class*="btn"]):not([class*="button"]) {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--line-violet);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-body a:not([class*="btn"]):not([class*="button"]):hover,
.article-prose a:not([class*="btn"]):not([class*="button"]):hover {
  color: var(--accent-dark);
}

.article-body .table-wrap {
  margin: 1.5rem 0;
}

.article-body .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.article-body .data-table th,
.article-body .data-table td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.article-body .data-table th {
  background: var(--bg-panel);
  color: var(--text);
  font-weight: 600;
}

.article-body .data-table td {
  color: var(--text);
}

.article-body .data-table tr:last-child td,
.post-body .data-table tr:last-child td {
  border-bottom: 0;
}

/* ---------- 文章页:章节节奏 ---------- */

.article-chapter {
  padding-block: 1.25rem;
}

.article-chapter:first-child {
  padding-top: 0;
}

.article-chapter h2:first-of-type {
  margin-top: 0;
}

/* ---------- 文章页:文末下载引导卡 ---------- */

.article-cta,
.post-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  width: calc(100% - 2 * var(--gutter));
  max-width: 820px;
  margin: 2rem auto 0;
  padding: clamp(1.25rem, 1rem + 1.5vw, 2rem);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
}

.article-cta h2,
.post-cta h2 {
  margin: 0 0 0.375rem;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  line-height: 1.4;
  font-weight: 700;
}

.article-cta p,
.post-cta p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.65;
}

.article-cta-actions,
.post-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.btn-soft {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.625rem 1.375rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-soft:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- 文章页:延伸阅读 ---------- */

#related-posts {
  max-width: 820px;
  margin: 2.5rem auto 0;
  padding-inline: var(--gutter);
}

#related-posts .related-title {
  margin: 0 0 1rem;
  font-size: clamp(1.0625rem, 0.95rem + 0.5vw, 1.25rem);
  line-height: 1.5;
  font-weight: 700;
}

#related-posts .related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

#related-posts .related-card {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  min-width: 0;
  padding: 1.25rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-panel);
}

#related-posts .related-card .post-tag {
  align-self: flex-start;
}

#related-posts .related-card-title {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 700;
}

#related-posts .related-card-title a {
  color: var(--text);
  text-decoration: none;
}

#related-posts .related-card-title a:hover {
  color: var(--accent);
}

#related-posts .related-card-summary {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

#related-posts .related-card .post-date {
  margin-top: auto;
}

/* ---------- 文章页:上一篇 / 下一篇 ---------- */

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 820px;
  margin: 2rem auto 0;
  padding-inline: var(--gutter);
  padding-bottom: 2.5rem;
}

#post-nav .post-nav-link {
  display: block;
  min-width: 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--r-panel);
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#post-nav .post-nav-link:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

#post-nav .post-nav-link:only-child {
  grid-column: 1 / -1;
}

#post-nav .post-nav-label {
  display: block;
  margin-bottom: 0.375rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}

#post-nav .post-nav-title {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.5;
}

#post-nav .post-nav-next {
  text-align: right;
}

#post-nav .post-nav-link:hover .post-nav-title {
  color: var(--accent);
}

/* ---------- 响应式 ---------- */

@media (max-width: 720px) {
  .post-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  #related-posts .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  #post-nav {
    grid-template-columns: 1fr;
  }

  #post-nav .post-nav-link:only-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .post-card,
  .tag-filter,
  .btn-soft,
  #post-nav .post-nav-link {
    transition: none;
  }
}