/* ===========================================
   Butterfly 5.5.4 自定义样式优化
   配色方案: 极光紫青
   =========================================== */

/* -------------------------------------------
   1. 主色调 - 极光紫青
   ------------------------------------------- */
:root {
  --primary-color: #667eea;
  --primary-light: #48c6ef;
  --primary-dark: #764ba2;
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #48c6ef 100%);
}

/* Banner 渐变背景 */
#page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #48c6ef 100%) !important;
}

/* 导航栏渐变 */
#nav {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  backdrop-filter: blur(10px);
}

/* 标题链接渐变 hover */
#site-title a,
.layout .card-announcement .item-headline span {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 按钮渐变 */
button,
.btn-beautify,
#pagination .page-number.current {
  background: var(--primary-gradient) !important;
  border: none !important;
}

/* 标签渐变 */
.tag-cloud a {
  background: var(--primary-gradient);
  color: #fff !important;
  border-radius: 15px;
  padding: 5px 12px;
}

/* -------------------------------------------
   2. 首页 Banner - 半屏高度
   ------------------------------------------- */
#page-header.full_page {
  display: block !important;
  height: 50vh !important;
  min-height: 300px !important;
}

/* 保留站点信息区域 */
#page-header.full_page #site-info {
  padding: 20px 0 !important;
}

#page-header.full_page #site-title {
  font-size: 2rem !important;
}

/* 隐藏社交图标区域 */
#page-header.full_page #site_social_icons {
  display: none !important;
}

/* -------------------------------------------
   3. 文章卡片优化
   ------------------------------------------- */
.recent-post-item {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  border-left: 3px solid #667eea;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.1);
  transition: all 0.3s ease;
  overflow: hidden;
}

.recent-post-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(102, 126, 234, 0.2);
}

/* 暗色模式卡片 */
[data-theme="dark"] .recent-post-item {
  background: rgba(30, 40, 50, 0.95);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .recent-post-item:hover {
  box-shadow: 0 12px 30px rgba(102, 126, 234, 0.15);
}

/* -------------------------------------------
   4. Footer 渐变 - 极光紫青
   ------------------------------------------- */
#footer {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  position: relative;
  overflow: hidden;
  color: #fff !important;
}

#footer a {
  color: rgba(255, 255, 255, 0.9) !important;
}

#footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 5%;
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 50px solid rgba(72, 198, 239, 0.2);
  transform: rotate(-15deg);
}

#footer::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 8%;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 35px solid rgba(255, 255, 255, 0.15);
  transform: rotate(20deg);
}

[data-theme="dark"] #footer {
  background: linear-gradient(135deg, #4a5db8 0%, #5a3d7a 100%) !important;
}

/* -------------------------------------------
   5. 代码块优化
   ------------------------------------------- */
#article-container pre,
#article-container code {
  border-radius: 8px;
}

#article-container pre {
  background: linear-gradient(135deg, #1a1f2e 0%, #2a1f3e 100%) !important;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.15);
}

#article-container code {
  background: rgba(102, 126, 234, 0.1);
  color: #764ba2;
  padding: 2px 6px;
  border-radius: 4px;
}

#article-container pre code {
  background: transparent !important;
  color: #e0e6ed;
}

/* 行号 */
#article-container .gist .gist-meta,
#article-container .highlight figcaption {
  background: rgba(118, 75, 162, 0.1) !important;
}

/* 复制按钮 */
#article-container .highlight .copy-btn {
  color: #667eea !important;
  border: 1px solid #667eea !important;
}

#article-container .highlight .copy-btn:hover {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  color: #fff !important;
}

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

::-webkit-scrollbar-track {
  background: rgba(102, 126, 234, 0.05);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #667eea, #764ba2);
  border-radius: 10px;
  min-height: 30px;
}

::-webkit-scrollbar-thumb:hover {
  background: #667eea;
}

/* Firefox 滚动条 */
* {
  scrollbar-width: thin;
  scrollbar-color: #667eea rgba(102, 126, 234, 0.05);
}

/* -------------------------------------------
   7. 其他细节优化
   ------------------------------------------- */

/* 链接 hover 效果 */
#article-container a {
  color: #667eea;
  border-bottom: 1px dashed #764ba2;
  transition: all 0.2s ease;
}

#article-container a:hover {
  color: #764ba2;
  border-bottom-color: #48c6ef;
}

/* 引用块 */
#article-container blockquote {
  border-left: 4px solid #667eea;
  background: linear-gradient(90deg, rgba(102, 126, 234, 0.08), transparent);
}

/* 表格 */
#article-container table th {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
}

#article-container table tr:hover td {
  background: rgba(76, 155, 232, 0.05);
}

/* 侧边栏卡片 */
aside .card-widget {
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(76, 155, 232, 0.08);
  transition: all 0.3s ease;
}

aside .card-widget:hover {
  box-shadow: 0 6px 20px rgba(76, 155, 232, 0.12);
}

/* 阅读进度条 */
.progress-bar {
  background: var(--primary-gradient) !important;
}

/* 返回顶部按钮 */
#go-up {
  background: var(--primary-gradient) !important;
}

/* 搜索按钮 */
#search-button {
  color: var(--primary-color);
}

#search-button:hover {
  color: var(--primary-dark);
}