/*
Theme Name: AI Minimal
Theme URI: https://luanpa.com
Description: 极简AI博客主题，龙虾AI导航风格，宽屏适配，极致SEO优化。
Version: 3.0.0
Author: luanpa.com
License: GPL-2.0+
Text Domain: ai-minimal
*/

:root {
  --accent: #1a73e8;
  --accent-hover: #1557b0;
  --text: #1e293b;
  --text-light: #475569;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  margin: 0 !important;
  padding: 0 !important;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 1.125rem;
  margin: 0 !important;
  padding: 0 !important;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 主容器 */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  box-sizing: border-box;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* ========== 头部导航 ========== */
.site-header {
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  min-height: 64px;
  display: flex;
  align-items: flex-end;
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 0;
  padding: 0;
}

.site-header .container {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  width: 100%;
  padding: 0 24px;
}

.site-title {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
  width: 300px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.site-title:hover {
  opacity: 0.9;
}

.site-logo-img {
  width: 100px;
  height: 100px;
  display: block;
}

.site-title-text {
  font-family: 'SF Mono', 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  font-size: 1.8rem;
  font-weight: 600;
  color: #6b7280;
  letter-spacing: 1px;
  line-height: 1;
}

/* 导航整体右对齐 */
.main-navigation {
  display: flex;
  gap: 4px;
  list-style: none;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-left: auto;
}

.main-navigation li {
  display: flex;
}

.main-navigation li a {
  position: relative;
  color: #475569;
  padding: 20px 18px 23px;
  font-size: 1.15rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  text-align: right;
}

.main-navigation li a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s ease;
  transform-origin: left;
}

.main-navigation li a:hover {
  color: var(--accent);
}

.main-navigation li a:hover::after {
  transform: scaleX(1);
}

/* ========== 内容区布局 ========== */
.site-content {
  padding: 30px 0;
  margin: 0;
}

.row {
  display: flex;
  gap: 36px;
}

.content-area {
  flex: 1;
  min-width: 0;
}

.sidebar {
  width: 320px;
  flex-shrink: 0;
}

/* ========== 文章卡片 ========== */
.blog-post {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  transition: all 0.15s;
  display: flex;
  gap: 18px;
  padding: 18px 20px;
}

.blog-post:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

.post-thumb {
  width: 240px;
  height: 160px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
  background: #e2e8f0;
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-content {
  flex: 1;
  min-width: 0;
}

.post-cat {
  display: inline-block;
  background: #e8f0fe;
  color: var(--accent);
  padding: 3px 12px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.blog-post h2 {
  font-size: 1.35rem;
  line-height: 1.4;
  margin-bottom: 8px;
}

.blog-post h2 a {
  color: #0f172a;
}

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

.post-excerpt {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.post-meta {
  font-size: 0.9rem;
  color: #94a3b8;
  display: flex;
  gap: 12px;
}

/* ========== 侧边栏 ========== */
.sidebar .widget {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.widget-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e8f0fe;
}

.sidebar ul {
  list-style: none;
}

.sidebar ul li {
  padding: 6px 0;
  border-bottom: 1px solid #f1f5f9;
}

.sidebar ul li a {
  color: var(--text);
  font-size: 1rem;
}

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

.tagcloud a {
  background: #f1f5f9;
  color: #475569;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.9rem;
  transition: 0.15s;
}

.tagcloud a:hover {
  background: var(--accent);
  color: #fff;
}

.sidebar-search {
  display: flex;
  margin-top: 12px;
}

.sidebar-search input {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px 0 0 6px;
  font-size: 0.95rem;
  width: 100%;
  outline: none;
}

.sidebar-search input:focus {
  border-color: var(--accent);
}

.sidebar-search button {
  padding: 8px 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  white-space: nowrap;
  font-size: 0.95rem;
}

/* ========== 面包屑 ========== */
.breadcrumbs {
  padding: 12px 0;
  font-size: 0.95rem;
  color: #64748b;
  margin: 0;
}

.breadcrumbs a {
  color: var(--accent);
}

/* ========== 文章详情页 ========== */
.single-post {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.single-post .post-cat {
  display: inline-block;
  background: #e8f0fe;
  color: var(--accent);
  padding: 3px 12px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.single-post h1 {
  font-size: 2.2rem;
  line-height: 1.3;
  margin-bottom: 10px;
}

.post-meta {
  font-size: 0.95rem;
  color: #64748b;
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.article-toc {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 24px;
  font-size: 1rem;
}

.article-toc ul {
  list-style: none;
  padding-left: 0;
  margin-top: 8px;
}

.article-content {
  font-size: 1.15rem;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 24px 0 12px;
  color: #0f172a;
}

.article-content pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.95rem;
}

.author-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  gap: 14px;
  margin-top: 24px;
  font-size: 1rem;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.related-posts {
  margin-top: 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.related-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 12px;
  transition: 0.15s;
  color: var(--text);
  display: block;
  font-size: 1rem;
}

.related-item:hover {
  border-color: var(--accent);
}

/* ========== 分页 ========== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 24px 0;
}

.pagination a,
.pagination span {
  padding: 8px 14px;
  border: 1px solid #e2e8f0;
  background: #fff;
  border-radius: 6px;
  font-size: 1rem;
  color: var(--text);
}

.pagination .current {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ========== 页脚 ========== */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  font-size: 0.95rem;
  color: #64748b;
  margin-top: 40px;
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
  .row {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
  }
  .main-navigation {
    display: none;
  }
  .blog-post {
    flex-direction: column;
  }
  .post-thumb {
    width: 100%;
    height: 180px;
  }
  .site-title-text {
    font-size: 1.5rem;
  }
  .site-title {
    width: auto;
  }
}

@media (max-width: 600px) {
  .single-post {
    padding: 20px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
}
.article-copyright {
    margin-top: 30px;
    padding: 16px 20px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #475569;
}
.article-copyright p {
    margin: 4px 0;
}
.article-copyright a {
    color: #1a73e8;
}
/* 关于本站 文字样式 */
.about-text {
    font-family: inherit;          /* 继承主题默认字体 */
}

.about-text p {
    margin: 0;
    font-size: 1rem;               /* 与侧边栏列表链接字号一致 */
    line-height: 1.7;              /* 保持舒适的行距 */
    color: var(--text);            /* 使用主题主文字色 #1e293b */
}

/* ========== 首页横幅广告样式 ========== */
.ad-banner {
    margin: 20px 0 30px;
    padding: 0;
}

.ad-banner-link {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

.ad-banner-link:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
    border-color: #cbd5e1;
}

.ad-banner-icon {
    font-size: 3.5rem;
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e0f2fe, #dbeafe);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-banner-content {
    flex: 1;
    min-width: 0;
}

.ad-badge {
    display: inline-block;
    background: #ff6b00;
    color: #fff;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.ad-banner-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 4px;
    line-height: 1.3;
}

.ad-banner-content p {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 8px;
}

.ad-cta {
    display: inline-block;
    background: #1a73e8;
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.ad-banner-link:hover .ad-cta {
    background: #1557b0;
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .ad-banner-link {
        flex-direction: column;
        text-align: center;
        padding: 16px;
    }
    .ad-banner-icon {
        width: 60px;
        height: 60px;
        font-size: 2.5rem;
    }
    .ad-banner-content h2 {
        font-size: 1.2rem;
    }
}