/* Modern UI Base Styles */
:root {
  --primary-color: #2196F3;
  --text-primary: #212121;
  --text-secondary: #757575;
  --background-light: #FAFAFA;
  --background-white: #FFFFFF;
  --spacing-unit: 1rem;
  --border-radius: 8px;
  --transition-speed: 0.3s;
}

/* Global Modernization */
body, html {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background-light);
}

/*左导航悬浮sidebar-menu-inner宽度调整为90px*/
.sidebar-popup.sidebar-menu-inner > div > ul > li.sidebar-item>ul{position:absolute;top:0px;left:10px;width:90px;z-index:99}
.sidebar-popup.sidebar-menu-inner ul{width:90px}
.sidebar-popup.sidebar-menu-inner ul li{width:90px}

/* Modern Card Styles */
/* .url-card .url-body {
    background: var(--background-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-unit);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
} */

/*隐藏左导航scrollbar*/
.sidebar-menu.flex-fill::-webkit-scrollbar{display:none}

/*搜索框搜索图标颜色*/
#search button i{color:#6C757D;font-size:18px}

.url-card .url-body:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

/*顶部导航栏字体+图标颜色*/
.big-header-banner .page-header{color:#ffffff;background:rgba(255,255,255,0);box-shadow:none;transition:color .3s,background-color .3s}
.big-header-banner:not(.header-bg) .page-header .navbar-nav>li>a,.big-header-banner:not(.header-bg) .navbar-menu a:not(.dropdown-item){color:#ffffff;}
.big-header-banner:not(.header-bg) .page-header .navbar-nav>li>a:hover,.big-header-banner:not(.header-bg) .navbar-menu a:not(.dropdown-item):hover{color:#dc3545;}
.big-header-banner:not(.header-bg) .header-mini-btn path{stroke:#ffffff;}
.big-header-banner:not(.header-bg) .header-mini-btn label:hover path{stroke:#ffffff;}

/* Modern Search Bar */
#search {
  max-width: 800px;
  margin: 0 auto;
}

#search-text {
  height: 54px;
  border-radius: 27px;
  border: none;
  padding: 0 24px;
  font-size: 16px;
  background: var(--background-white);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: box-shadow var(--transition-speed);
}

#search-text:focus {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  outline: none;
}

/*主页搜索搜索框(头+底部)字体颜色*/
.header-big:not(.no-bg) .s-type-list{color:#76ffd7;}
.header-big:not(.no-bg) .text-muted,.header-big:not(.no-bg) .search-type .menu-item a,.header-big:not(.no-bg) .big-title .h1{color:#ffffff!important}

/*左导航二级导航标题左侧距离*/
.sidebar-menu-inner ul li ul li a{margin-left:30px;}

/* Modern Category Headers */
.text-gray {
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-unit);
}

Site Icons
.url-card .url-img {
  border-radius: 12px;
  overflow: hidden;
  transition: transform var(--transition-speed);
}

/*头部导航二级导航iconfont图标*/
.navbar-collapse ul li.menu-item-has-children:after{content:'\e612';}

/*搜索部分背景样式*/
.header-big.css-color{background-size:unset;background-position:unset;animation:unset;}

/*搜索热词样式调整*/
.search-hot-text{
    position: absolute;
    z-index: 100;
    width: 100%;
    border-radius: 0 0 10px 10px;
    background: #FFF;
    box-shadow: 0px 4px 5px 0px #cccccc94;
    overflow: hidden;
}
.url-card .url-img:hover {
  transform: scale(1.05);
}

/* Description Text */
.text-muted {
  color: var(--text-secondary) !important;
  font-size: 0.875rem;
  line-height: 1.5;
}

.io-black-mode .text-muted{
    color:#bbb !important;
}

.search-hot-text ul{
    margin: 0;
    padding: 5px 0;
}
.search-hot-text ul li{
    line-height: 30px;
    font-size: 14px;
    padding: 0px 25px;
    color: #777;
    cursor: pointer;
}
.io-black-mode .search-hot-text ul li{
    color: #fff;
}    
.search-hot-text ul li.current{
    background: #f1f1f1;
    color: #2196f3;
}
.search-hot-text ul li:hover{
    background: #f1f1f1;
    color: #2196f3;
    cursor: pointer;
}
.search-hot-text ul li span{
    display: inline-block;
    width: 20px;
    height: 20px;
    font-size: 12px;
    line-height: 20px;
    text-align: center;
    background: #e5e5e5;
    margin-right: 10px;
    border-radius: 10px;
    color: #999;
}

/* Buttons */
/* .btn {
  border-radius: 25px;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  transition: all var(--transition-speed);
} */

footer.main-footer .footer-text {
    text-align: center;
}

footer.main-footer .footer-text a:hover {
    color: red;
}

/* .btn-primary {
  background: var(--primary-color);
  border: none;
} */

/*About页面*/
.panel .panel-body a {color: #007bff;}
.panel .panel-body a:hover {color: #979898;}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .url-card .url-body {
    padding: calc(var(--spacing-unit) * 0.75);
  }
  
  #search-text {
    height: 48px;
  }
}

/*网格背景*/
.io-grey-mode .page-container .grid-bg {
    background-image: linear-gradient(rgba(50, 0, 0, 0.03) 1px, transparent 0), linear-gradient(90deg, rgba(50, 0, 0, 0.03) 1px, transparent 0); 
    background-size: 40px 40px;
    background-color: #f5f5f5;
}
.io-black-mode .page-container .grid-bg {
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 0), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 0); 
    background-size: 40px 40px;
    background-color: #373b3f;
}

/*导航 Logo 图标裁剪边角*/
.url-card .url-img > img {
    border-radius: 20%;
}