/* style.css */
/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 导航栏定制 */
.navbar {
  background: #333 !important;
  padding: 10px 20px !important;
}

.nav-link {
  color: #eee !important;
  margin-right: 20px;
  cursor: pointer;
  padding: 5px 10px !important;
  border-radius: 4px;
  transition: all 0.2s !important;
}

.nav-link.active,
.nav-link:hover {
  background: #555 !important;
  color: #fff !important;
}

/* 加入我们按钮 */
.join-btn {
  background: #27ae60;
  color: white !important;
  border: none;
  padding: 8px 16px !important;
  font-size: 0.9rem !important;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s !important;
}

.join-btn:hover {
  background: #2ecc71 !important;
  transform: translateY(-2px);
}

/* 弹出层 */
.join-popup {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 20px;
  width: 220px;
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  padding: 15px;
  z-index: 1001;
  animation: popup 0.3s ease-out;
}

/* 二维码 */
.join-qr {
  width: 100%;
  border-radius: 4px;
}

/* QQ 号 */
.join-qq {
  margin-top: 10px;
  font-size: 0.9rem;
  color: #333;
}

@keyframes popup {
  from { 
    opacity: 0;
    transform: translateY(-10px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式调整 */
@media (max-width: 992px) {
  .navbar-collapse {
    background: #333;
    padding: 10px;
    margin-top: 10px;
    border-radius: 4px;
    position: relative;
    z-index: 1000;
  }

  .join-us-wrapper {
    margin-top: 10px;
    width: 100%;
    text-align: center;
  }

  #join-popup {
    right: 50%;
    transform: translateX(50%);
  }

  .navbar-collapse::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: -1;
  }
}

/* 公共内容样式 */
.content {
  padding: 20px;
  margin-bottom: 60px; /* 给footer留空间 */
}

.section {
  display: none;
}

.section.active {
  display: block;
}

/* 群成员卡片 */
.members-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding: 10px 0;
}

.member-card {
  width: 200px;
  background: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  overflow: hidden;
  text-align: center;
  transition: transform 0.2s;
}

.member-card:hover {
  transform: translateY(-4px);
}

.member-card .avatar {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* 页脚 */
footer {
  text-align: center;
  padding: 1rem;
  background-color: #333;
  color: white;
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 999;
}