/*
Theme Name: 三因制宜
Theme URI: https://sanyinzhiyi.com/
Author: 三因制宜
Author URI: https://sanyinzhiyi.com/
Description: 基于三因制宜理念的中医养生博客主题，中式优雅风格，适合健康养生类内容创作
Version: 1.0.0
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sanyinzhiyi
Tags: blog, health, one-column, custom-colors, custom-menu, custom-logo, editor-style, featured-images, footer-widgets, block-patterns, block-styles, wide-blocks

基于三因制宜理念的中医养生博客主题，传承中医智慧，弘扬养生文化。
*/

/* ================================
   CSS变量定义
================================ */
:root {
  --brand-green: #4A7C59;
  --brand-green-dark: #3A6147;
  --brand-green-light: #5A8C69;
  --bg-primary: #FDFBF7;
  --bg-secondary: #F5F2EB;
  --text-primary: #2D2D2D;
  --text-secondary: #666666;
  --text-light: #999999;
  --border-color: #E8E4DD;
  --shadow-sm: 0 2px 8px rgba(74, 124, 89, 0.08);
  --shadow-md: 0 4px 16px rgba(74, 124, 89, 0.12);
  --shadow-lg: 0 8px 32px rgba(74, 124, 89, 0.16);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
}

/* ================================
   基础重置
================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--brand-green);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--brand-green-dark);
}

img {
  max-width: 100%;
  height: auto;
}

/* ================================
   排版
================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: 'ZCOOL XiaoWei', 'Noto Serif SC', serif;
  font-weight: 400;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1.5rem;
}

blockquote {
  border-left: 4px solid var(--brand-green);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
}

blockquote cite {
  display: block;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ================================
   布局容器
================================ */
.site-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.content-area {
  max-width: 720px;
  margin: 0 auto;
}

/* ================================
   顶部导航
================================ */
.site-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-logo a {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.5rem;
  color: var(--brand-green);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  font-size: 1.75rem;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.main-nav a {
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0.5rem 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-green);
  transition: var(--transition);
}

.main-nav a:hover::after,
.main-nav .current-menu-item a::after {
  width: 100%;
}

.main-nav a:hover,
.main-nav .current-menu-item a {
  color: var(--brand-green);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--brand-green);
}

/* ================================
   页面标题区
================================ */
.page-header {
  text-align: center;
  padding: 3rem 1.5rem;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: 2.5rem;
  color: var(--brand-green);
  margin-bottom: 0.5rem;
}

.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-light);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb .separator {
  color: var(--text-light);
}

/* ================================
   文章卡片
================================ */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
  padding: 3rem 0;
}

.post-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.post-card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.post-card:hover .post-card-image img {
  transform: scale(1.05);
}

.post-card-image .category-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--brand-green);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.post-card-content {
  padding: 1.5rem;
}

.post-card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.post-card-title {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

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

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

.post-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.read-more {
  font-size: 0.9rem;
  color: var(--brand-green);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.read-more:hover {
  gap: 0.5rem;
}

/* ================================
   文章内容页
================================ */
.article-header {
  text-align: center;
  padding: 3rem 1.5rem 2rem;
}

.article-category {
  display: inline-block;
  background: var(--brand-green);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.article-title {
  font-size: 2.25rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 2rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

.article-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.article-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--brand-green);
  display: inline-block;
}

.article-content h3 {
  margin-top: 2rem;
  color: var(--brand-green);
}

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

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

.article-content img {
  border-radius: var(--radius-md);
  margin: 2rem 0;
}

/* ================================
   分页
================================ */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 3rem 0;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: var(--transition);
}

.pagination a:hover,
.pagination .current {
  background: var(--brand-green);
  color: white;
  border-color: var(--brand-green);
}

/* ================================
   侧边栏
================================ */
.sidebar {
  padding: 3rem 0;
}

.widget {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.widget-title {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.1rem;
  color: var(--brand-green);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--brand-green);
}

.widget ul {
  list-style: none;
}

.widget li {
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--border-color);
}

.widget li:last-child {
  border-bottom: none;
}

/* ================================
   底部
================================ */
.site-footer {
  background: var(--text-primary);
  color: #CCCCCC;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  color: white;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.footer-section p,
.footer-section li {
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: #CCCCCC;
}

.footer-section a:hover {
  color: var(--brand-green-light);
}

.footer-hotline {
  font-size: 1.25rem;
  color: var(--brand-green-light);
  margin: 0.5rem 0;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--brand-green-light);
}

/* ================================
   CTA区域
================================ */
.cta-section {
  background: linear-gradient(135deg, var(--brand-green) 0%, var(--brand-green-dark) 100%);
  color: white;
  text-align: center;
  padding: 4rem 1.5rem;
  border-radius: var(--radius-lg);
  margin: 3rem 0;
}

.cta-section h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-section p {
  max-width: 600px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

.cta-button {
  display: inline-block;
  background: white;
  color: var(--brand-green);
  padding: 1rem 2.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ================================
   404页面
================================ */
.error-404 {
  text-align: center;
  padding: 6rem 1.5rem;
}

.error-404 .code {
  font-size: 6rem;
  font-weight: bold;
  color: var(--border-color);
  line-height: 1;
}

.error-404 h1 {
  margin-top: 1rem;
}

.error-404 .search-form {
  max-width: 400px;
  margin: 2rem auto;
}

.error-404 input[type="search"] {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1rem;
}

/* ================================
   评论区
================================ */
.comments-area {
  max-width: 720px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.comments-title {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--brand-green);
}

/* ================================
   响应式
================================ */
@media (max-width: 768px) {
  .main-nav ul {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: 1rem;
    box-shadow: var(--shadow-md);
  }
  
  .main-nav ul.active {
    display: flex;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .article-title {
    font-size: 1.75rem;
  }
  
  .page-header h1 {
    font-size: 1.75rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ================================
   WordPress特定
================================ */
.alignleft {
  float: left;
  margin: 0 1.5rem 1rem 0;
}

.alignright {
  float: right;
  margin: 0 0 1rem 1.5rem;
}

.aligncenter {
  display: block;
  margin: 0 auto;
}

.wp-caption {
  max-width: 100%;
}

.wp-caption-text {
  font-size: 0.85rem;
  color: var(--text-light);
  text-align: center;
  padding: 0.5rem 0;
}

.screen-reader-text {
  clip: rect(1px, 1px, 1px, 1px);
  position: absolute !important;
}

/* 搜索表单 */
.search-form {
  display: flex;
  gap: 0.5rem;
}

.search-form label {
  flex: 1;
}

.search-form input[type="search"] {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1rem;
}

.search-form input[type="submit"] {
  background: var(--brand-green);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.search-form input[type="submit"]:hover {
  background: var(--brand-green-dark);
}