/*
Theme Name: A19
*/

/* 基础样式 */
:root {
  --primary: #4361ee;
  --secondary: #3f37c9;
  --accent: #4895ef;
  --light: #f8f9fa;
  --dark: #212529;
  --gray: #6c757d;
  --success: #4cc9f0;
  --warning: #f72585;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: #f5f7fa;
}

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

a:hover {
  color: var(--secondary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.btn {
  display: inline-block;
  padding: 10px 25px;
  background: var(--primary);
  color: white;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.btn:hover {
  background: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--dark);
  margin-bottom: 15px;
}

.section-title p {
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}

/* 头部样式 */
.site-header {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

/* Logo样式 */
.site-logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #4287f5;
}

.site-logo i {
    font-size: 24px;
}

.site-logo .site-title {
    font-size: 24px;
    font-weight: bold;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.site-logo .custom-logo {
    max-height: 40px;
    width: auto;
    object-fit: contain;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .site-logo .custom-logo {
        max-height: 32px;
    }
    
    .site-logo i {
        font-size: 20px;
    }
    
    .site-logo .site-title {
        font-size: 20px;
    }
}

/* 导航菜单基础样式 */
.main-navigation {
    margin-left: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 20px;
}

.nav-menu li {
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    color: #333;
    text-decoration: none;
    font-size: 16px;
    padding: 10px 0;
    display: block;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 10px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #333;
    margin: 5px 0;
    transition: 0.3s;
}

/* 移动端样式 */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
        position: relative;
        z-index: 1002;
    }

    .main-navigation {
        display: none;
        margin: 0;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: #fff;
        z-index: 1001;
        padding-top: 60px;
    }

    .main-navigation.active {
        display: block;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0;
        height: 100%;
        overflow-y: auto;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid #eee;
    }

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

    .nav-menu li a {
        padding: 15px 20px;
        text-align: center;
        font-size: 16px;
    }

    /* 汉堡按钮动画 */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* 防止菜单打开时页面滚动 */
    body.menu-open {
        overflow: hidden;
    }
}

/* 桌面端样式 */
@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none;
    }

    .main-navigation {
        display: block !important;
    }
}

/* 特色网格区域 */
.featured-grid-section {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.grid-item {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.grid-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.grid-img {
  height: 180px;
  overflow: hidden;
  position: relative;
}

.grid-content {
  padding: 20px;
}

.grid-content h3 {
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.grid-content p {
  color: var(--gray);
  font-size: 0.9rem;
  margin-bottom: 15px;
}

.post-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--gray);
}

/* 分类展示区域样式 */
.categories-section {
    padding: 40px 0;
    background-color: #f8f9fa;
}

.categories-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 20px 0;
}

.category-card {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    text-decoration: none;
    height: 80px; /* 固定高度 */
    width: 100%; /* 固定宽度 */
}

.category-card:hover {
    transform: translateY(-5px);
}

.category-icon {
    flex: 0 0 40px; /* 固定宽度，不允许缩放 */
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f7ff;
    border-radius: 8px;
    margin-right: 15px;
}

.category-icon i {
    font-size: 20px;
    color: #3182ce;
}

.category-info {
    flex: 1;
    min-width: 0; /* 允许内容收缩 */
    overflow: hidden; /* 处理溢出 */
}

.category-title {
    font-size: 16px;
    font-weight: 600;
    color: #2d3748;
    margin: 0 0 5px 0;
    white-space: nowrap; /* 文字不换行 */
    overflow: hidden; /* 隐藏溢出部分 */
    text-overflow: ellipsis; /* 显示省略号 */
}

.category-count {
    font-size: 14px;
    color: #718096;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 响应式布局 */
@media (max-width: 1024px) {
    .categories-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .categories-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .categories-container {
        grid-template-columns: 1fr;
    }
}

/* 图片画廊 */
.gallery-section {
  background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
  padding: 80px 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);  /* 修改为5列 */
    gap: 15px;
    padding: 15px 0;
}

.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 1/1;  /* 修改为正方形 */
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-3px);
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-item:hover .gallery-image {
    transform: scale(1.1);
}

.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

.gallery-item-title {
    color: white;
    font-size: 0.9rem;
    display: block;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* 作者展示 */
.authors-section {
  background: white;
}

.authors-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 20px 0;
}

.author-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.author-card:hover {
    transform: translateY(-5px);
}

.author-avatar {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.author-card:hover .author-avatar img {
    transform: scale(1.1);
}

.author-info {
    padding: 20px;
    text-align: center;
}

.author-info h3 {
    margin: 0 0 5px;
    color: var(--dark);
    font-size: 1.5rem;
}

.author-info h4 {
    color: var(--primary);
    margin: 0 0 15px;
    font-size: 1rem;
}

.author-info p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.author-social {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-link {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light);
    border-radius: 50%;
    color: var(--primary);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

/* 标签云 */
.tags-section {
    background: #f8f9fa;
    padding: 60px 0;
}

.tags-container {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* 修改WordPress默认标签样式 */
.tag-cloud a {
    display: inline-block;
    padding: 8px 20px;
    background: #f5f7fa;
    color: #4361ee;
    border-radius: 50px;
    font-size: 14px !important;
    text-decoration: none;
    transition: all 0.3s ease;
}

.tag-cloud a:hover {
    background: #4361ee;
    color: #fff;
    transform: translateY(-2px);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tags-container {
        padding: 20px;
        margin: 0 15px;
    }

    .tag-cloud {
        gap: 10px;
    }
    
    .tag-cloud a {
        padding: 6px 15px;
        font-size: 13px !important;
    }
}

/* 通讯订阅 */
.newsletter {
  background: linear-gradient(135deg, #4895ef 0%, #3f37c9 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.newsletter-container {
  max-width: 700px;
  margin: 0 auto;
}

.newsletter h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.newsletter p {
  margin-bottom: 30px;
  opacity: 0.9;
}

/* 订阅表单样式 */
.newsletter-form {
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form .form-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.newsletter-form button {
    padding: 12px 25px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.newsletter-form button:hover {
    background-color: #0056b3;
}

/* 订阅消息样式 */
.subscription-message {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 1000;
    animation: slideIn 0.5s ease-out;
}

.subscription-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.subscription-message.info {
    background-color: #cce5ff;
    color: #004085;
    border: 1px solid #b8daff;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 页脚 */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 60px;
}

.footer-widget h3 {
  color: white;
  margin-bottom: 25px;
  font-size: 1.4rem;
}

.footer-links {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li::before,
.footer-links li::after {
  display: none;
}

.footer-links li a {
  color: #666;
  text-decoration: none;
  font-size: 14px;
  line-height: 2;
  transition: color 0.3s;
}

.footer-links li a:hover {
  color: #3182ce;
}

.footer-contact li {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
}

.footer-bottom {
  text-align: center;
  padding: 25px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

/* 移动端页脚菜单样式 */
@media screen and (max-width: 768px) {
  .footer-links {
    text-align: center;
  }
  
  .footer-links li {
    padding: 5px 0;
  }
}

/* 响应式设计 */
@media (max-width: 992px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 60px 0;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: white;
    flex-direction: column;
    padding: 40px 0;
    transition: var(--transition);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-menu li {
    margin: 15px 0;
    text-align: center;
  }

  .mobile-toggle {
    display: block;
  }

  .newsletter-form {
    flex-direction: column;
    gap: 15px;
  }

  .newsletter-input,
  .newsletter-btn {
    width: 100%;
    border-radius: 4px;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

@media (max-width: 576px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }

  .section-title h2 {
    font-size: 2rem;
  }
}

/* 响应式布局 */
@media (max-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .authors-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .authors-container {
        grid-template-columns: 1fr;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        display: none;
    }

    .main-navigation.active {
        display: block;
    }

    .nav-menu {
        flex-direction: column;
        gap: 15px;
    }

    .nav-menu li a {
        display: block;
        padding: 10px 0;
    }

    /* 汉堡菜单动画 */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

/* 通用标题样式 */
.main-title {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.sub-title {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
}

/* 文章卡片样式 */
.post-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.post-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.post-thumbnail {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.post-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-content {
    padding: 20px;
}

.post-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

.post-excerpt {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.post-meta {
    display: flex;
    gap: 15px;
    font-size: 14px;
    color: #999;
}

.post-meta i {
    margin-right: 5px;
}

/* 分类页面样式 */
.category-header {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.category-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.category-info i {
    font-size: 24px;
    color: #4287f5;
}

.category-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
}

.category-description {
    color: #666;
    line-height: 1.6;
    margin-top: 10px;
}

.category-meta {
    color: #999;
    font-size: 14px;
}

/* 文章详情页样式 */
.single-post {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.single-post .post-header {
    margin-bottom: 30px;
}

.single-post .post-title {
    font-size: 32px;
    margin-bottom: 20px;
}

.single-post .post-meta {
    margin-bottom: 20px;
}

.single-post .post-content {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

.single-post .post-content p {
    margin-bottom: 20px;
}

.single-post .post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
}

.post-tags {
    margin: 30px 0;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.post-tags a {
    display: inline-block;
    padding: 5px 12px;
    background: #f5f5f5;
    color: #666;
    border-radius: 15px;
    margin: 5px;
    font-size: 14px;
    text-decoration: none;
    transition: background 0.3s;
}

.post-tags a:hover {
    background: #e0e0e0;
}

.post-navigation {
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.nav-links {
    display: flex;
    justify-content: space-between;
}

.nav-previous,
.nav-next {
    flex: 0 0 48%;
    text-decoration: none;
    color: #666;
    transition: color 0.3s;
}

.nav-previous:hover,
.nav-next:hover {
    color: #4287f5;
}

.nav-title {
    font-size: 14px;
}

/* 相关文章样式 */
.related-posts {
    margin-top: 40px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.related-post {
    text-decoration: none;
    color: inherit;
}

/* 分页样式 */
.pagination {
    margin-top: 30px;
    text-align: center;
}

.pagination .page-numbers {
    display: inline-block;
    padding: 8px 15px;
    margin: 0 5px;
    border-radius: 4px;
    background: #fff;
    color: #333;
    text-decoration: none;
    transition: all 0.3s;
}

.pagination .current {
    background: #4287f5;
    color: #fff;
}

.pagination .page-numbers:hover:not(.current) {
    background: #f5f5f5;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .main-title {
        font-size: 24px;
    }

    .single-post .post-title {
        font-size: 24px;
    }

    .related-posts-grid {
        grid-template-columns: 1fr;
    }

    .post-navigation {
        flex-direction: column;
        gap: 20px;
    }

    .nav-previous,
    .nav-next {
        flex: 0 0 100%;
    }
}