/* ========================================
   Tifa2030 博客自定义样式
   Design System: Soft Tech Fusion
   Version: 1.0
   ======================================== */

/* ========================================
   1. 字体引入
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Noto+Serif+SC:wght@400;600;700&display=swap');

/* ========================================
   2. CSS 变量定义
   ======================================== */
:root {
  /* 主色调 - 柔和紫罗兰 */
  --tifa-primary: #9B8FD9;
  --tifa-primary-light: #B8AEE8;
  --tifa-primary-dark: #7A6FB8;
  
  /* 次要色 - 蒂法粉 */
  --tifa-secondary: #F4A6C3;
  --tifa-secondary-light: #F8C4D8;
  
  /* 强调色 */
  --tifa-accent: #FFD700;
  --tifa-accent-soft: #FFE44D;
  
  /* 背景色 */
  --tifa-bg-primary: #FAFAFC;
  --tifa-bg-secondary: #F0F0F5;
  --tifa-bg-card: #FFFFFF;
  --tifa-bg-code: #F5F5F8;
  
  /* 文字色 */
  --tifa-text-primary: #2D2D3A;
  --tifa-text-secondary: #6B6B7B;
  --tifa-text-muted: #9B9BAB;
  
  /* 分类色 */
  --cat-oasis: #8B7FD4;
  --cat-ai: #42B883;
  --cat-soul: #F4A6C3;
  --cat-levi: #FFD700;
  --cat-iq: #5B8DEF;
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(155, 143, 217, 0.06);
  --shadow-md: 0 4px 20px rgba(155, 143, 217, 0.08);
  --shadow-lg: 0 8px 40px rgba(155, 143, 217, 0.12);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ========================================
   3. 全局样式重置
   ======================================== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, var(--tifa-bg-primary) 0%, var(--tifa-bg-secondary) 100%);
  background-attachment: fixed;
  color: var(--tifa-text-primary);
  line-height: 1.8;
}

/* 标题使用衬线体增加人文感 */
h1, h2, h3, h4, h5, h6,
.dream-title,
.post-title,
.card-title {
  font-family: 'Noto Serif SC', 'STSong', 'SimSun', serif;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* ========================================
   4. 导航栏优化
   ======================================== */
.nav-wrapper {
  background: rgba(250, 250, 252, 0.88) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(155, 143, 217, 0.08);
  box-shadow: none !important;
}

.nav-wrapper a {
  color: var(--tifa-text-primary) !important;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-wrapper a:hover {
  color: var(--tifa-primary) !important;
}

/* 导航栏在封面上的样式 */
.nav-transparent .nav-wrapper {
  background: transparent !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-transparent .nav-wrapper a,
.nav-transparent .brand-logo {
  color: white !important;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.nav-transparent .nav-wrapper a:hover {
  color: var(--tifa-secondary-light) !important;
}

/* ========================================
   5. 首页封面优化
   ======================================== */
.bg-cover,
.about-cover,
.pd-header {
  background: linear-gradient(135deg, 
    rgba(155, 143, 217, 0.82) 0%, 
    rgba(139, 127, 212, 0.85) 35%,
    rgba(122, 111, 184, 0.88) 70%,
    rgba(200, 166, 195, 0.82) 100%) !important;
  position: relative;
}

.bg-cover::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(155, 143, 217, 0.88) 0%, 
    rgba(139, 127, 212, 0.90) 35%,
    rgba(122, 111, 184, 0.92) 70%,
    rgba(200, 166, 195, 0.88) 100%);
  z-index: 1;
}

.bg-cover .container {
  position: relative;
  z-index: 2;
}

.cover-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: white !important;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
  letter-spacing: 0.02em;
}

.cover-title span,
.header-subtitle {
  color: rgba(255, 255, 255, 0.95) !important;
  font-weight: 400;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

/* ========================================
   6. 梦想文本区域
   ======================================== */
.dream {
  background: linear-gradient(135deg,
    rgba(155, 143, 217, 0.05) 0%,
    rgba(244, 166, 195, 0.03) 100%);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  margin: 2rem 0;
}

.dream-title {
  color: var(--tifa-primary);
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.dream-text {
  color: var(--tifa-text-secondary);
  font-size: 1.1rem;
  line-height: 2;
  max-width: 800px;
}

/* ========================================
   7. 文章卡片优化
   ======================================== */
.card {
  background: var(--tifa-bg-card) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-sm) !important;
  border: 1px solid rgba(155, 143, 217, 0.06);
  transition: all var(--transition-normal);
  overflow: hidden;
}

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

.card .card-image img {
  transition: transform var(--transition-slow);
}

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

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

.card-title {
  font-size: 1.35rem;
  color: var(--tifa-text-primary);
  margin-bottom: 0.75rem;
}

/* ========================================
   8. 分类标签优化
   ======================================== */
.chip {
  border-radius: 20px;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

/* O计划 - 紫 */
.chip[href*="oasis"] {
  background: rgba(155, 143, 217, 0.15);
  color: var(--tifa-primary-dark);
  font-weight: 600;
}

/* AI本地秘书 - 绿 */
.chip[href*="ai-assistant"] {
  background: rgba(66, 184, 131, 0.15);
  color: #2E9A6B;
  font-weight: 600;
}

/* 心灵咖啡馆 - 粉 */
.chip[href*="soul-cafe"] {
  background: rgba(244, 166, 195, 0.22);
  color: #C45A7C;
  font-weight: 600;
}

/* levi的博客 - 金 */
.chip[href*="levi-blog"] {
  background: rgba(255, 193, 7, 0.18);
  color: #B8860B;
  font-weight: 600;
}

/* IQ博士 - 蓝 */
.chip[href*="iq-doctor"] {
  background: rgba(91, 141, 239, 0.15);
  color: #3D6BD4;
  font-weight: 600;
}

.chip:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-sm);
}

/* ========================================
   9. 文章页面优化
   ======================================== */
.post-card {
  background: var(--tifa-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(155, 143, 217, 0.06);
}

.post-content {
  font-size: 1.05rem;
  line-height: 2;
}

.post-content p {
  margin-bottom: 1.5rem;
}

.post-content h2 {
  color: var(--tifa-primary);
  border-bottom: 2px solid rgba(155, 143, 217, 0.1);
  padding-bottom: 0.5rem;
  margin-top: 2.5rem;
}

.post-content h3 {
  color: var(--tifa-text-primary);
  margin-top: 2rem;
}

.post-content blockquote {
  background: linear-gradient(135deg, 
    rgba(155, 143, 217, 0.05) 0%, 
    rgba(244, 166, 195, 0.05) 100%);
  border-left: 4px solid var(--tifa-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--tifa-text-secondary);
}

.post-content code {
  background: var(--tifa-bg-code);
  color: var(--tifa-primary-dark);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.9em;
}

.post-content pre {
  background: var(--tifa-text-primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  overflow-x: auto;
}

.post-content pre code {
  background: transparent;
  color: #E8E8F0;
  padding: 0;
}

/* ========================================
   10. 代码块优化
   ======================================== */
.hljs {
  background: var(--tifa-text-primary) !important;
  border-radius: var(--radius-md);
  padding: 1.25rem !important;
}

/* ========================================
   11. 表格优化
   ======================================== */
.post-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: 2rem 0;
}

.post-content th {
  background: linear-gradient(135deg, var(--tifa-primary) 0%, var(--tifa-primary-dark) 100%);
  color: white;
  font-weight: 600;
  padding: 1rem;
  text-align: left;
}

.post-content td {
  padding: 1rem;
  border-bottom: 1px solid rgba(155, 143, 217, 0.1);
}

.post-content tr:last-child td {
  border-bottom: none;
}

.post-content tr:nth-child(even) {
  background: rgba(155, 143, 217, 0.03);
}

/* ========================================
   12. 目录导航优化
   ======================================== */
.toc-widget {
  background: var(--tifa-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(155, 143, 217, 0.06);
  padding: 1.5rem;
}

.toc-widget .toc-title {
  color: var(--tifa-primary);
  font-family: 'Noto Serif SC', serif;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(155, 143, 217, 0.1);
}

.toc-link {
  color: var(--tifa-text-secondary);
  transition: color var(--transition-fast);
  padding: 0.4rem 0;
}

.toc-link:hover,
.toc-link.active {
  color: var(--tifa-primary);
}

/* ========================================
   13. 关于卡片优化
   ======================================== */
.about-card {
  background: linear-gradient(135deg, 
    rgba(155, 143, 217, 0.08) 0%, 
    rgba(244, 166, 195, 0.05) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(155, 143, 217, 0.1);
}

.about-avatar {
  border: 4px solid white;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.about-avatar:hover {
  transform: scale(1.05) rotate(2deg);
}

/* ========================================
   14. 页脚优化
   ======================================== */
.footer {
  background: linear-gradient(135deg, 
    rgba(155, 143, 217, 0.05) 0%, 
    rgba(244, 166, 195, 0.03) 100%);
  border-top: 1px solid rgba(155, 143, 217, 0.08);
  padding: 3rem 0;
  margin-top: 4rem;
}

/* ========================================
   15. 返回顶部按钮
   ======================================== */
#backTop {
  background: linear-gradient(135deg, var(--tifa-primary) 0%, var(--tifa-secondary) 100%);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

#backTop:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ========================================
   16. 搜索框优化
   ======================================== */
.search-input {
  background: var(--tifa-bg-card);
  border: 2px solid rgba(155, 143, 217, 0.1);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--tifa-primary);
  box-shadow: 0 0 0 4px rgba(155, 143, 217, 0.1);
  outline: none;
}

/* ========================================
   17. 分页优化
   ======================================== */
.pagination {
  margin: 3rem 0;
}

.pagination li a {
  border-radius: var(--radius-sm);
  margin: 0 0.25rem;
  color: var(--tifa-text-secondary);
  transition: all var(--transition-fast);
}

.pagination li.active a {
  background: var(--tifa-primary);
  color: white;
}

.pagination li a:hover {
  background: rgba(155, 143, 217, 0.1);
  color: var(--tifa-primary);
}

/* ========================================
   18. 动画效果
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card,
.post-card,
.dream {
  animation: fadeInUp 0.6s ease-out;
}

/* ========================================
   19. 响应式优化
   ======================================== */
@media (max-width: 768px) {
  .cover-title {
    font-size: 2.5rem;
  }
  
  .card {
    margin-bottom: 1.5rem;
  }
  
  .post-content {
    font-size: 1rem;
  }
  
  .toc-widget {
    display: none;
  }
}

@media (max-width: 480px) {
  .cover-title {
    font-size: 2rem;
  }
  
  .dream {
    padding: 2rem 1.5rem;
  }
}

/* ========================================
   19b. 阅读进度条
   ======================================== */
.reading-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(155, 143, 217, 0.1);
  z-index: 9999;
}

.reading-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--tifa-primary) 0%, var(--tifa-secondary) 100%);
  width: 0%;
  transition: width 0.1s ease;
}

/* ========================================
   19c. 站点统计优化
   ======================================== */
.site-stats {
  background: linear-gradient(135deg, rgba(155, 143, 217, 0.05) 0%, rgba(244, 166, 195, 0.03) 100%);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  text-align: center;
  border: 1px solid rgba(155, 143, 217, 0.08);
}

.site-stats .stat-item {
  display: inline-block;
  margin: 0 2rem;
  text-align: center;
}

.site-stats .stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--tifa-primary);
  font-family: 'Noto Serif SC', serif;
}

.site-stats .stat-label {
  font-size: 0.85rem;
  color: var(--tifa-text-muted);
  margin-top: 0.25rem;
}

/* ========================================
   19d. Giscus 评论区优化
   ======================================== */
.giscus {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(155, 143, 217, 0.1);
}

.giscus-frame {
  border-radius: var(--radius-md);
}

/* ========================================
   20. 特殊效果
   ======================================== */

/* 选中文字颜色 */
::selection {
  background: rgba(155, 143, 217, 0.3);
  color: var(--tifa-text-primary);
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--tifa-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--tifa-primary-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--tifa-primary);
}

/* 链接下划线动画 */
.post-content a {
  color: var(--tifa-primary);
  text-decoration: none;
  position: relative;
}

.post-content a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--tifa-primary) 0%, var(--tifa-secondary) 100%);
  transition: width var(--transition-normal);
}

.post-content a:hover::after {
  width: 100%;
}

/* ========================================
   21. 覆盖 Matery 主题默认绿色
   将所有 #42b983 / #0f9d58 / #4cbf30 替换为蒂法紫粉
   ======================================== */

/* --- 渐变背景（导航栏滚动后、页脚、按钮等） --- */
.bg-color {
  background-image: linear-gradient(to right, var(--tifa-primary) 0%, var(--tifa-primary-dark) 100%) !important;
}

/* 标签云、chip */
.chip-default {
  background-image: linear-gradient(to right, var(--tifa-primary) 0%, var(--tifa-primary-dark) 100%) !important;
}

.tag-cloud a,
.tag-cloud a:hover {
  color: var(--tifa-primary) !important;
}

/* TOC 高亮 & 侧边栏链接 */
.toc-widget .active,
.toc-widget a:hover,
.post-toc .active {
  color: var(--tifa-primary) !important;
}

/* blockquote 左边框 */
blockquote {
  border-left-color: var(--tifa-primary) !important;
}

/* 归档、标签页的链接色 */
.archive-article-date,
.archive-article-title:hover,
.category-title:hover,
.tag-title:hover {
  color: var(--tifa-primary) !important;
}

/* 文章元信息中的链接 */
.post-meta a,
.post-meta a:hover,
.article-meta a,
.post-info a {
  color: var(--tifa-primary) !important;
}

/* 分页按钮 */
.pagination .active a {
  background: linear-gradient(to right, var(--tifa-primary) 0%, var(--tifa-primary-dark) 100%) !important;
  border-color: var(--tifa-primary) !important;
}

.pagination a:hover {
  border-color: var(--tifa-primary) !important;
  color: var(--tifa-primary) !important;
}

/* 搜索、返回顶部按钮 */
#backTop,
.search-btn {
  background: linear-gradient(to right, var(--tifa-primary) 0%, var(--tifa-primary-dark) 100%) !important;
}

/* 文章标题悬停 */
.article .article-title:hover,
.post-title-link:hover {
  color: var(--tifa-primary) !important;
}

/* 页脚 */
footer.page-footer {
  background: linear-gradient(to right, var(--tifa-primary-dark) 0%, var(--tifa-primary) 100%) !important;
}

/* 标签页标签 */
.chip {
  background: var(--tifa-primary) !important;
}

/* 独立页面标题 banner */
.bg-cover {
  background-image: linear-gradient(to right, var(--tifa-primary) 0%, var(--tifa-primary-dark) 100%) !important;
}

/* 社交链接悬停 */
.social-link:hover .social-icon,
.fab:hover {
  color: var(--tifa-primary) !important;
}

/* 代码高亮关键字 */
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-section,
.hljs-link {
  color: var(--tifa-primary) !important;
}

/* 时间轴圆点 */
.timeline-dot,
.cd-timeline-img {
  background: var(--tifa-primary) !important;
  border-color: var(--tifa-primary) !important;
}

/* 进度条 */
.progress .determinate {
  background: linear-gradient(to right, var(--tifa-primary) 0%, var(--tifa-secondary) 100%) !important;
}

/* 所有 matery 中使用绿色的通用选择器覆盖 */
a:not(.btn):not(.chip):not(.pagination a):not(.nav-wrapper a) {
  color: var(--tifa-primary);
}

a:not(.btn):not(.chip):hover {
  color: var(--tifa-primary-dark);
}

/* 按钮悬停 */
.btn:hover,
.btn-floating:hover {
  background: var(--tifa-primary-dark) !important;
}

/* 输入框聚焦 */
input:focus,
textarea:focus {
  border-bottom-color: var(--tifa-primary) !important;
  box-shadow: 0 1px 0 0 var(--tifa-primary) !important;
}

input:focus + label,
textarea:focus + label {
  color: var(--tifa-primary) !important;
}

/* Valine / 评论区强调色 */
.v .vbtn {
  background: var(--tifa-primary) !important;
  border-color: var(--tifa-primary) !important;
}

/* 文章卡片标签 */
.card .tag a,
.article-tags a {
  background: var(--tifa-primary) !important;
  color: #fff !important;
}

.card .tag a:hover,
.article-tags a:hover {
  background: var(--tifa-primary-dark) !important;
}

/* 移动端汉堡菜单 */
.side-nav {
  background: var(--tifa-bg-card) !important;
}

.side-nav a {
  color: var(--tifa-text-primary) !important;
}

.side-nav a:hover {
  background: rgba(139, 127, 212, 0.08) !important;
  color: var(--tifa-primary) !important;
}

/* 确保导航滚动后也是紫色 */
nav {
  background-color: var(--tifa-primary) !important;
}

nav.transparent {
  background-color: transparent !important;
}

/* 搜索框内文字 */
.search-input::placeholder {
  color: var(--tifa-text-muted);
}

/* 文章内代码块边框 */
.post-content code:not([class*="hljs"]) {
  background: rgba(139, 127, 212, 0.08);
  color: var(--tifa-primary-dark);
  border-radius: 3px;
  padding: 2px 6px;
}