/**
 * Glassmorphism Dark Navigation - 玻璃态深色导航样式
 *
 * 核心特性：
 * - 玻璃态设计（半透明背景 + 模糊效果）
 * - 固定左侧边栏布局
 * - 纯 Tailwind CSS 兼容
 * - 深色/浅色主题支持
 */

/* ===== 全局重置 ===== */
body {
  background: #0A0F1E;
  color: #F1F5F9;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== 背景环境光晕 ===== */
.ambient-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.ambient-glow::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 168, 83, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.ambient-glow::after {
  content: '';
  position: absolute;
  bottom: -300px;
  left: -200px;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(30, 41, 59, 0.3) 0%, transparent 60%);
  border-radius: 50%;
}

/* ===== 玻璃态工具类 ===== */
.glass-surface {
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.glass-navbar {
  background: rgba(10, 15, 30, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.glass-card {
  background: rgba(17, 24, 39, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

/* ===== 搜索框样式 ===== */
.search-box {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.search-input {
  color: #F1F5F9;
}

.search-input::placeholder {
  color: #64748B;
}

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

::-webkit-scrollbar-track {
  background: #0A0F1E;
}

::-webkit-scrollbar-thumb {
  background: #1E293B;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* ===== 响应式网格 ===== */
.site-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}

@media (max-width: 640px) {
  .site-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .site-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) and (max-width: 1280px) {
  .site-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1281px) {
  .site-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== 平滑滚动 ===== */
html {
  scroll-behavior: smooth;
}

/* ===== 侧边栏菜单样式 ===== */

/* 导航菜单容器 */
.sidebar-menu nav ul {
  padding: 0 8px;
}

/* 主菜单项 - 调整为从左开始 */
.drawer-menu-item {
  color: #94A3B8;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 10px;
  margin: 3px 4px;
  padding: 11px 12px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

/* 父级菜单项（div）的特殊样式 */
.submenu-toggle.drawer-menu-item {
  cursor: pointer;
}

/* 确保有切换图标的菜单项有足够空间 */
.drawer-menu-item .toggle-icon {
  flex-shrink: 0;
}

/* 悬停动效 */
.drawer-menu-item:hover {
  color: #F1F5F9;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  border-color: rgba(255, 255, 255, 0.08);
  transform: translateX(2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 活动状态 */
.drawer-menu-item.active {
  color: #D4A853;
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.12) 0%, rgba(212, 168, 83, 0.05) 100%);
  border-color: rgba(212, 168, 83, 0.3);
  box-shadow: 0 0 0 1px rgba(212, 168, 83, 0.1), 0 4px 12px rgba(212, 168, 83, 0.15);
}

/* 活动状态脉冲动画 */
.drawer-menu-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #D4A853 0%, #F0D78C 50%, #D4A853 100%);
  border-radius: 3px 0 0 3px;
  animation: activePulse 2s ease-in-out infinite;
}

@keyframes activePulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px rgba(212, 168, 83, 0.6); }
  50% { opacity: 0.7; box-shadow: 0 0 4px rgba(212, 168, 83, 0.3); }
}

/* 图标样式 */
.drawer-menu-item i {
  color: #64748B;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 1;
}

.drawer-menu-item:hover i {
  color: #D4A853;
  transform: scale(1.1) rotate(-3deg);
}

.drawer-menu-item.active i {
  color: #D4A853;
  transform: scale(1.05);
  filter: drop-shadow(0 0 6px rgba(212, 168, 83, 0.5));
}

/* 分类组间距增强 */
.sidebar-menu nav > ul > li {
  margin-bottom: 20px;
}

/* ===== 现代树形导航结构 ===== */

/* 父级菜单项容器（可点击展开/收起） */
.submenu-toggle {
  cursor: pointer;
  user-select: none;
  position: relative;
}

/* 箭头指示器 */
.submenu-arrow {
  margin-left: auto;
  font-size: 0.65rem;
  color: #64748B;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

/* 展开状态 - 箭头向下 */
.submenu-toggle.expanded .submenu-arrow {
  transform: rotate(90deg);
}

/* 收起状态 - 箭头向右（默认） */
.submenu-toggle:not(.expanded) .submenu-arrow {
  transform: rotate(0deg);
}

/* 悬停时箭头颜色 */
.submenu-toggle:hover .submenu-arrow {
  color: #D4A853;
}

/* 子菜单容器 - 树形引导线实现 */
.submenu {
  max-height: 2000px;
  overflow: hidden;
  opacity: 1;
  transition: max-height 0.3s ease-out, opacity 0.2s ease;
  /* 左侧边框作为垂直引导线，与父图标中心对齐 (4px margin + 12px padding + 10px icon half width = 26px) */
  margin-left: 26px; 
  padding-left: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

/* 收起状态 */
.submenu.collapsed {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

/* 子菜单项容器 */
.submenu li {
  position: relative;
  /* 移除左边距，让伪元素能完全贴合左侧边框 */
  margin-left: 0;
}

/* 最后一个子项底部圆角线补充（解决引导线往下延伸多余部分的问题） */
.submenu li:last-child::after {
  content: '';
  position: absolute;
  left: -1px; /* 盖住父元素的 left border */
  top: 50%;
  bottom: 0;
  width: 2px;
  background: #0A0F1E; /* 必须和背景色一致 */
}

/* 子菜单项样式 */
.submenu .drawer-menu-item {
  font-size: 0.8125rem;
  padding: 8px 12px 8px 20px; /* text padding left: 20px so total offset matches parent text (26+20=46px) */
  margin: 2px 0 2px 4px; /* 留出离边框的距离？不，我们需要伪元素紧贴边框，所以 left margin 为 0，但留点右侧边距 */
  margin-right: 4px;
  border-radius: 0 6px 6px 0;
  position: relative;
  /* 移除 transform 控制，以便伪元素引导线不会断开 */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 取消不需要的缩放变形 */
.submenu .drawer-menu-item:hover {
  transform: none;
  background: linear-gradient(90deg, rgba(212, 168, 83, 0.08) 0%, transparent 100%);
}

.submenu .drawer-menu-item.active {
  background: linear-gradient(90deg, rgba(212, 168, 83, 0.12) 0%, transparent 100%);
  color: #D4A853;
}

/* 水平引导分支线 */
.submenu .drawer-menu-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
  transition: background 0.3s ease, width 0.3s ease;
}

.submenu .drawer-menu-item:hover::before {
  background: #D4A853;
  width: 16px;
}

.submenu .drawer-menu-item.active::before {
  background: #D4A853;
  width: 16px;
}

/* ===== 滚动条美化 ===== */
#sidebar::-webkit-scrollbar {
  width: 4px;
}

#sidebar::-webkit-scrollbar-track {
  background: transparent;
}

#sidebar::-webkit-scrollbar-thumb {
  background: rgba(212, 168, 83, 0.3);
  border-radius: 2px;
}

#sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 168, 83, 0.5);
}

/* ===== 搜索下拉菜单 ===== */
.search-dropdown {
  position: fixed;
  z-index: 1050;
  max-height: 300px;
  overflow-y: auto;
}

/* ===== 卡片样式 ===== */
.site-card {
  background: rgba(17, 24, 39, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: block;
}

.site-card:hover {
  transform: translateY(-4px);
  background: rgba(17, 24, 39, 0.6);
  border-color: rgba(212, 168, 83, 0.25);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.site-card .icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s ease;
  overflow: hidden;
}

.site-card:hover .icon-wrapper {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ===== 页脚 ===== */
.main-footer {
  background: rgba(10, 15, 30, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  color: #64748B;
  font-size: 0.75rem;
}

.main-footer a {
  color: #D4A853;
  transition: color 0.25s ease;
}

.main-footer a:hover {
  color: #F0D78C;
}

/* ===== 返回顶部按钮 ===== */
.go-up-button {
  background: rgba(17, 24, 39, 0.8);
  color: #94A3B8;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.go-up-button:hover {
  color: #D4A853;
  border-color: rgba(212, 168, 83, 0.3);
  box-shadow: 0 4px 12px rgba(212, 168, 83, 0.15);
  transform: translateY(-2px);
}

/* ===== 分类标题 ===== */
.category-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding: 0 0.25rem;
}

.category-indicator {
  width: 4px;
  height: 24px;
  background: #D4A853;
  border-radius: 9999px;
}

.category-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: #F1F5F9;
  letter-spacing: -0.025em;
  margin: 0;
  padding: 0;
  border: none;
}

.category-divider {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.06), transparent);
}

/* ===== 浅色模式覆盖 ===== */
body:not(.night) {
  background: #F8FAFC;
  color: #0F172A;
}

body:not(.night) .ambient-glow::before {
  background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
}

body:not(.night) .ambient-glow::after {
  background: radial-gradient(circle, rgba(226, 232, 240, 0.5) 0%, transparent 60%);
}

body:not(.night) .glass-surface {
  background: rgba(255, 255, 255, 0.9);
  border-right-color: rgba(0, 0, 0, 0.06);
}

body:not(.night) .glass-navbar {
  background: rgba(255, 255, 255, 0.85);
  border-bottom-color: rgba(0, 0, 0, 0.06);
}

/* 亮色模式搜索框（提高优先级）*/
body:not(.night) .search-box {
  background: #FFFFFF !important;
  border: 1px solid rgba(0, 0, 0, 0.08) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04) !important;
}

body:not(.night) .search-input {
  color: #0F172A !important;
}

body:not(.night) .search-input::placeholder {
  color: #94A3B8 !important;
}

/* 搜索按钮颜色 */
body:not(.night) .search-box button {
  color: #64748B;
}

body:not(.night) .search-box button:hover {
  color: #B8923F;
}

/* 亮色模式卡片 */
body:not(.night) .glass-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* ===== 亮色模式菜单样式 ===== */
body:not(.night) .drawer-menu-item {
  color: #64748B;
  border-color: transparent;
}

body:not(.night) .drawer-menu-item:hover {
  color: #1E293B;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0.01) 100%);
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

body:not(.night) .drawer-menu-item.active {
  color: #B8923F;
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.1) 0%, rgba(212, 168, 83, 0.03) 100%);
  border-color: rgba(184, 146, 63, 0.25);
  box-shadow: 0 0 0 1px rgba(184, 146, 63, 0.08), 0 4px 12px rgba(184, 146, 63, 0.1);
}

body:not(.night) .drawer-menu-item i {
  color: #94A3B8;
}

body:not(.night) .drawer-menu-item:hover i,
body:not(.night) .drawer-menu-item.active i {
  color: #B8923F;
}

/* ===== 亮色模式树形结构覆盖 ===== */

body:not(.night) .submenu {
  border-left-color: rgba(0, 0, 0, 0.08);
}
body:not(.night) .submenu li:last-child::after {
  background: #F8FAFC; /* 亮色模式的侧边栏背景通常为 F8FAFC, 也有时是 white。此遮罩用于隐藏尾部的竖线 */
}

body:not(.night) .submenu .drawer-menu-item::before {
  background: rgba(0, 0, 0, 0.08);
}
body:not(.night) .submenu .drawer-menu-item:hover::before,
body:not(.night) .submenu .drawer-menu-item.active::before {
  background: #B8923F;
}
body:not(.night) .submenu .drawer-menu-item:hover {
  background: linear-gradient(90deg, rgba(184, 146, 63, 0.05) 0%, transparent 100%);
}
body:not(.night) .submenu .drawer-menu-item.active {
  background: linear-gradient(90deg, rgba(184, 146, 63, 0.1) 0%, transparent 100%);
  color: #B8923F;
}


/* ===== 侧边栏分隔线（重新设计）===== */
/*
 * 设计理念：
 * - 使用充足的间距代替明显的线条
 * - 保持视觉简洁和专业
 * - 深色和亮色模式统一外观
 */

/* 分类组容器 - 增加间距 */
.sidebar-menu nav > ul > li {
  margin-bottom: 20px;
  /* 使用间距来分组，而不是线条 */
}

/* 可选：保留一个微妙的分隔线（如果用户偏好线条） */
.sidebar-divider {
  height: 1px;
  margin: 8px 0 4px;
  opacity: 0.6;
}

/* 深色模式 - 微妙的渐变线 */
.sidebar-divider {
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.06) 20%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.06) 80%,
    transparent 100%
  );
}

/* 亮色模式 - 同样的微妙效果 */
body:not(.night) .sidebar-divider {
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 0, 0, 0.08) 20%,
    rgba(0, 0, 0, 0.10) 50%,
    rgba(0, 0, 0, 0.08) 80%,
    transparent 100%
  );
}

/* 亮色模式滚动条 */
body:not(.night) #sidebar::-webkit-scrollbar-thumb {
  background: rgba(184, 146, 63, 0.25);
}

body:not(.night) #sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(184, 146, 63, 0.4);
}

body:not(.night) .site-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

body:not(.night) .site-card:hover {
  background: #FFFFFF;
  border-color: rgba(184, 146, 63, 0.3);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

/* 亮色模式卡片文字颜色 */
body:not(.night) .site-card .font-semibold {
  color: #1E293B !important;
}

body:not(.night) .site-card:hover .font-semibold {
  color: #B8923F !important;
}

body:not(.night) .site-card .text-xs {
  color: #64748B !important;
}

body:not(.night) .site-card:hover .text-xs {
  color: #475569 !important;
}

body:not(.night) .category-title {
  color: #0F172A;
}

body:not(.night) .main-footer {
  background: rgba(255, 255, 255, 0.9);
  border-top-color: rgba(0, 0, 0, 0.06);
  color: #94A3B8;
}

body:not(.night) .go-up-button {
  background: rgba(255, 255, 255, 0.9);
  border-color: #E2E8F0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

body:not(.night) .go-up-button:hover {
  color: #B8923F;
  border-color: rgba(184, 146, 63, 0.3);
}

body:not(.night) ::-webkit-scrollbar-track {
  background: #F8FAFC;
}

body:not(.night) ::-webkit-scrollbar-thumb {
  background: #CBD5E1;
}

body:not(.night) ::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* ================================================
 * Element Plus el-menu 样式覆盖
 * 保持与玻璃态导航设计风格一致
 * ================================================ */

/* === 基础 el-menu 重置 === */
.sidebar-el-menu {
  border-right: none !important;
  background-color: transparent !important;
  --el-menu-bg-color: transparent;
  --el-menu-hover-bg-color: transparent;
  --el-menu-active-color: #D4A853;
  --el-menu-text-color: #94A3B8;
  --el-menu-hover-text-color: #F1F5F9;
  --el-menu-item-height: 42px;
  padding: 0 8px;
}

/* === el-menu-item 基础样式 === */
.sidebar-el-menu .el-menu-item {
  color: #94A3B8;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 10px;
  margin: 3px 4px;
  padding: 0 12px !important;
  height: 42px;
  line-height: 42px;
  border: 1px solid transparent;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent !important;
}

.sidebar-el-menu .el-menu-item:hover {
  color: #F1F5F9 !important;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%) !important;
  border-color: rgba(255, 255, 255, 0.08);
  transform: translateX(2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.sidebar-el-menu .el-menu-item.is-active {
  color: #D4A853 !important;
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.12) 0%, rgba(212, 168, 83, 0.05) 100%) !important;
  border-color: rgba(212, 168, 83, 0.3);
  box-shadow: 0 0 0 1px rgba(212, 168, 83, 0.1), 0 4px 12px rgba(212, 168, 83, 0.15);
}

/* === el-sub-menu 标题样式 === */
.sidebar-el-menu .el-sub-menu__title {
  color: #94A3B8 !important;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 10px;
  margin: 3px 4px;
  padding: 0 12px !important;
  height: 42px !important;
  line-height: 42px !important;
  border: 1px solid transparent;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent !important;
}

.sidebar-el-menu .el-sub-menu__title:hover {
  color: #F1F5F9 !important;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%) !important;
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 展开箭头 */
.sidebar-el-menu .el-sub-menu__icon-arrow {
  color: #64748B;
  font-size: 0.65rem;
  transition: transform 0.3s ease, color 0.3s ease;
}

.sidebar-el-menu .el-sub-menu__title:hover .el-sub-menu__icon-arrow {
  color: #D4A853;
}

/* === 父分类在子菜单展开或激活时的样式 === */
.sidebar-el-menu .el-sub-menu.is-opened > .el-sub-menu__title,
.sidebar-el-menu .el-sub-menu.is-active > .el-sub-menu__title {
  color: #F1F5F9 !important;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%) !important;
  border-color: rgba(255, 255, 255, 0.06);
}

.sidebar-el-menu .el-sub-menu.is-opened > .el-sub-menu__title .menu-icon {
  color: #D4A853;
}

.sidebar-el-menu .el-sub-menu.is-opened > .el-sub-menu__title .el-sub-menu__icon-arrow {
  color: #D4A853;
  transform: rotate(90deg);
}

/* === 子菜单项样式（使用 Element Plus 原生缩进） === */
.sidebar-el-menu .el-sub-menu .el-menu {
  background: transparent !important;
  /* 使用 Element Plus 原生的缩进来表达层级 */
  padding-left: 0;
  /* 增加上边距，避免覆盖父分类 */
  padding-top: 4px;
}

.sidebar-el-menu .el-sub-menu .el-menu .el-menu-item {
  font-size: 0.8125rem;
  padding-left: 48px !important; /* 增加缩进，使用 Element Plus 原生方式 */
  margin: 2px 4px 2px 4px; /* 调整左右边距，与父分类保持一致 */
  border-radius: 8px;
  height: 38px;
  line-height: 38px;
  min-width: auto;
}

.sidebar-el-menu .el-sub-menu .el-menu .el-menu-item:hover {
  transform: none;
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.08) 0%, rgba(212, 168, 83, 0.03) 100%) !important;
}

.sidebar-el-menu .el-sub-menu .el-menu .el-menu-item.is-active {
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.12) 0%, rgba(212, 168, 83, 0.05) 100%) !important;
}

/* === 菜单图标 === */
.sidebar-el-menu .menu-icon {
  color: #64748B;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.875rem;
}

.sidebar-el-menu .el-menu-item:hover .menu-icon,
.sidebar-el-menu .el-sub-menu__title:hover .menu-icon {
  color: #D4A853;
  transform: scale(1.1) rotate(-3deg);
}

.sidebar-el-menu .el-menu-item.is-active .menu-icon {
  color: #D4A853;
  transform: scale(1.05);
  filter: drop-shadow(0 0 6px rgba(212, 168, 83, 0.5));
}

/* === Element Plus el-scrollbar 在侧边栏中的样式 === */
.sidebar-menu .el-scrollbar__bar.is-vertical {
  width: 4px;
  right: 2px;
}

.sidebar-menu .el-scrollbar__thumb {
  background-color: rgba(212, 168, 83, 0.3);
  border-radius: 2px;
}

.sidebar-menu .el-scrollbar__thumb:hover {
  background-color: rgba(212, 168, 83, 0.5);
}

/* === 亮色模式 Element Plus 覆盖 === */
body:not(.night) .sidebar-el-menu {
  --el-menu-active-color: #B8923F;
  --el-menu-text-color: #64748B;
  --el-menu-hover-text-color: #1E293B;
}

body:not(.night) .sidebar-el-menu .el-menu-item {
  color: #64748B;
}

body:not(.night) .sidebar-el-menu .el-menu-item:hover {
  color: #1E293B !important;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0.01) 100%) !important;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

body:not(.night) .sidebar-el-menu .el-menu-item.is-active {
  color: #B8923F !important;
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.1) 0%, rgba(212, 168, 83, 0.03) 100%) !important;
  border-color: rgba(184, 146, 63, 0.25);
  box-shadow: 0 0 0 1px rgba(184, 146, 63, 0.08), 0 4px 12px rgba(184, 146, 63, 0.1);
}

body:not(.night) .sidebar-el-menu .el-sub-menu__title {
  color: #64748B !important;
}

body:not(.night) .sidebar-el-menu .el-sub-menu__title:hover {
  color: #1E293B !important;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0.01) 100%) !important;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

body:not(.night) .sidebar-el-menu .el-sub-menu__icon-arrow {
  color: #94A3B8;
}

body:not(.night) .sidebar-el-menu .el-sub-menu__title:hover .el-sub-menu__icon-arrow {
  color: #B8923F;
}

/* === 亮色模式：父分类在子菜单展开或激活时的样式 === */
body:not(.night) .sidebar-el-menu .el-sub-menu.is-opened > .el-sub-menu__title,
body:not(.night) .sidebar-el-menu .el-sub-menu.is-active > .el-sub-menu__title {
  color: #1E293B !important;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.01) 100%) !important;
  border-color: rgba(0, 0, 0, 0.08);
}

body:not(.night) .sidebar-el-menu .el-sub-menu.is-opened > .el-sub-menu__title .menu-icon {
  color: #B8923F;
}

body:not(.night) .sidebar-el-menu .el-sub-menu.is-opened > .el-sub-menu__title .el-sub-menu__icon-arrow {
  color: #B8923F;
}

body:not(.night) .sidebar-el-menu .menu-icon {
  color: #94A3B8;
}

body:not(.night) .sidebar-el-menu .el-menu-item:hover .menu-icon,
body:not(.night) .sidebar-el-menu .el-sub-menu__title:hover .menu-icon {
  color: #B8923F;
}

body:not(.night) .sidebar-el-menu .el-menu-item.is-active .menu-icon {
  color: #B8923F;
}

body:not(.night) .sidebar-el-menu .el-sub-menu .el-menu .el-menu-item:hover {
  background: linear-gradient(135deg, rgba(184, 146, 63, 0.06) 0%, rgba(184, 146, 63, 0.02) 100%) !important;
}

body:not(.night) .sidebar-el-menu .el-sub-menu .el-menu .el-menu-item.is-active {
  background: linear-gradient(135deg, rgba(184, 146, 63, 0.1) 0%, rgba(184, 146, 63, 0.04) 100%) !important;
  color: #B8923F !important;
}

body:not(.night) .sidebar-menu .el-scrollbar__thumb {
  background-color: rgba(184, 146, 63, 0.25);
}

body:not(.night) .sidebar-menu .el-scrollbar__thumb:hover {
  background-color: rgba(184, 146, 63, 0.4);
}

/* === 侧边栏导航区域内边距 === */
.sidebar-nav {
  padding: 0 4px;
}

/* === 隐藏 Element Plus el-menu 边框底线（非侧边栏弹出菜单） === */
.sidebar-el-menu.el-menu--popup {
  min-width: auto;
}