html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.my-search-tops{
  width: 50% !important;
}

/* 全局字体与背景 */
body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to right, #1f1c2c, #928dab);
  color: #fff;
}

/* 左侧导航栏 */
.sidebar {
  width: 250px;
  /* min-height: 100vh; */
  top: 135px; 
  position: fixed;
  overflow-y: auto;
  background: #2c3e50;
  box-shadow: 2px 0 10px rgba(0,0,0,0.3);
  max-height: 80vh; /* 限制最大高度为视口高度 */
  overflow-y: auto;
  scrollbar-width: thin; /* Firefox */
  scrollbar-color: #888 transparent;
}


.sidebar::-webkit-scrollbar {
  width: 6px;
}
.sidebar::-webkit-scrollbar-thumb {
  background-color: #888;
  border-radius: 3px;
}
.sidebar::-webkit-scrollbar-track {
  background-color: transparent;
}


.sidebar h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.sidebar ul > li {
  margin-bottom: 1rem;
}

.sidebar a {
  color: #ecf0f1;
  text-decoration: none;
  display: block;
  padding: 5px 10px;
  border-radius: 4px;
  transition: background 0.3s;
}

.sidebar a:hover {
  background: #34495e;
}

/* 右侧内容区 */
main {
  margin-left: 260px;
  padding: 2rem;
}

/* 卡片样式 */
section {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 16px rgba(0,0,0,0.3);
  backdrop-filter: blur(10px);
  transition: transform 0.3s;
}

section:hover {
  transform: translateY(-5px);
}

.desc-limit {
  display: inline-block;
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

canvas#mouse-trail-canvas {
  width: 100vw;
  height: 100vh;
}


/* 按钮样式 */
.btn-primary {
  background: #3498db;
  border: none;
}

.btn-primary:hover {
  background: #2980b9;
}

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

.site-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  transition: transform 0.3s, background 0.3s;
  backdrop-filter: blur(10px);
}

.site-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.2);
}


.sidebar ul > li > strong {
  cursor: pointer;
  display: block;
  margin-top: 1rem;
}

.sidebar ul > li > ul {
  padding-left: 1rem;
}

.sidebar ul > li.open > ul {
  display: block;
}

.site-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  transition: transform 0.3s;
  backdrop-filter: blur(10px);
}

.site-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.2);
}

.sub-menu {
  padding-left: 1rem;
}

.sub-menu li {
  margin-bottom: 0.5rem;
}

.toggle-group {
  cursor: pointer;
  display: block;
  margin-top: 1rem;
  font-weight: bold;
}

.nav-link-sub {
  color: #ecf0f1;
  text-decoration: none;
  display: block;
  padding: 4px 8px;
  border-radius: 4px;
}

.nav-link-sub:hover {
  background: #34495e;
}

.sub-menu {
  padding-left: 1rem;
  margin-top: 0.5rem;
}

.sub-menu li {
  margin-bottom: 0.25rem;
}

.toggle-group {
  font-weight: bold;
  margin-top: 1rem;
  cursor: pointer;
}

.toggle-group.active {
  color: #00ffff;
}

.nav-link-sub.active {
  background-color: #17a2b8;
  color: #fff;
  font-weight: bold;
  border-radius: 4px;
}


.nav-link-sub.active {
  background-color: #17a2b8;
  color: #fff;
  font-weight: bold;
  border-radius: 4px;
}

#multi-search .form-check-inline {
  margin-right: 1rem;
}
#multi-search-result .search-result a {
  display: block;
  margin-bottom: 0.5rem;
  color: #007bff;
}

footer {
  background-color: #222;
  color: #ccc;
  position: relative;
  bottom: 0;
  width: 100%;
}


#back-to-top {
  position: fixed;
  bottom: 100px;
  right: 20px;
  z-index: 999;
  display: none;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
#back-to-top:hover {
  background-color: #0056b3;
}

html {
  scroll-behavior: smooth;
}


.toggle-group {
  cursor: pointer;
  padding: 0.5rem 0;
  font-weight: bold;
}
.toggle-group:hover {
  color: #17a2b8;
}



/* 移动端适配 */
@media (max-width: 768px) {
  .sidebar {
    display: none !important;
  }
}

@media (max-width: 768px) {
  .site-card img {
    margin-bottom: 8px;
  }
  .site-card h6,
  .site-card small {
    text-align: center;
  }
  .desc-limit {
    display: inline-block;
    max-width: 100px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}




@media (max-width: 768px) {
  .sidebar {
    position: relative;
    width: 100%;
    min-height: auto;
  }

  main {
    margin-left: 0;
  }
}