/* assets/css/core.css */
:root {
  --primary-blue: #2196F3;
  --secondary-blue: #E3F2FD;
  --accent-blue: #1976D2;
  --white: #FFFFFF;
  --border-gray: #e0e0e0;
}

/* 基础布局 */
body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: var(--secondary-blue);
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

/* 用户信息栏 */
.user-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--primary-blue);
}

.user-info h1 {
  color: var(--primary-blue);
  margin: 0;
  font-size: 1.8rem;
}

.logout-btn {
  margin-left: auto;
  padding: 0.8rem 1.5rem;
  background: var(--primary-blue);
  color: var(--white);
  border-radius: 25px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.logout-btn:hover {
  opacity: 0.9;
}

/* 创建聊天室表单 */
.create-room {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.create-room input[type="text"] {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid var(--primary-blue);
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.create-room button {
  background: var(--primary-blue);
  color: var(--white);
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  width: 100%;
  font-size: 1.1rem;
}

/* 聊天室列表 */
.room-list {
  margin-bottom: 2rem;
}

.room-card {
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.room-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.room-status {
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.9rem;
}

.room-status.active {
  background: #C8E6C9;
  color: #2E7D32;
}

.room-status.expired {
  background: #FFCDD2;
  color: #C62828;
}

.room-actions button {
  background: #f44336;
  color: var(--white);
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.enter-btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: var(--primary-blue);
  color: var(--white);
  border-radius: 5px;
  text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .user-header {
    flex-direction: column;
    text-align: center;
  }

  .logout-btn {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }

  .avatar {
    width: 100px;
    height: 100px;
  }

  .room-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .create-room button {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0.5rem;
  }

  .user-header {
    padding: 1rem;
  }

  .room-card {
    padding: 1rem;
  }

  .user-info h1 {
    font-size: 1.5rem;
  }
}

/* 辅助样式 */
.empty-tip {
  text-align: center;
  color: #666;
  padding: 2rem;
  background: var(--white);
  border-radius: 8px;
}

.room-meta p {
  margin: 0.3rem 0;
  color: #666;
  font-size: 0.9rem;
}

/* ==================== 安全提示横幅 ==================== */
.security-alert-banner {
  background: var(--accent-blue);
  color: var(--white);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  animation: slideIn 0.5s ease-out;
}

.icon-shield::before {
  content: "🛡️";
  font-size: 1.4rem;
}

/* ==================== 搜索区样式 ==================== */
.brand-title {
  color: var(--primary-blue);
  text-align: center;
  font-size: 2.5rem;
  margin: 2rem 0;
  letter-spacing: -0.05em;
}

.chatroom-search-form {
  max-width: 800px;
  margin: 0 auto 3rem;
}

.input-group {
  display: flex;
  gap: 1rem;
  position: relative;
}

.form-control {
  flex: 1;
  padding: 1rem 1.5rem;
  border: 2px solid var(--primary-blue);
  border-radius: 50px;
  font-size: 1.1rem;
  transition: box-shadow 0.3s;
}

.form-control:focus {
  box-shadow: 0 0 8px rgba(33,150,243,0.3);
  outline: none;
}

.btn-search {
  background: var(--primary-blue);
  color: var(--white);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.btn-search:hover {
  transform: translateY(-2px);
}

.icon-search::before {
  content: "🔍";
  font-size: 1.2rem;
}

/* ==================== 搜索结果样式 ==================== */
.search-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.room-card.enhanced {
  border-left: 4px solid var(--primary-blue);
  transition: transform 0.2s;
}

.room-card.enhanced:hover {
  transform: translateY(-3px);
}

.room-status.online {
  background: #C8E6C9;
  color: #2E7D32;
  padding: 0.3rem 1rem;
  border-radius: 15px;
}

.room-status.offline {
  background: #FFEBEE;
  color: #C62828;
  padding: 0.3rem 1rem;
  border-radius: 15px;
}

.btn-enter {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--primary-blue);
  padding: 0.8rem 1.5rem;
  border: 2px solid var(--primary-blue);
  border-radius: 30px;
  margin-top: 1rem;
  transition: all 0.2s;
}

.btn-enter:hover {
  background: var(--primary-blue);
  color: var(--white);
}

.icon-arrow-right::before {
  content: "➡️";
}

/* ==============首页样式====== 安全特性区块 ==================== */
.security-features {
  background: rgba(227,242,253,0.3);
  padding: 3rem 2rem;
  border-radius: 16px;
  margin: 4rem 0;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  list-style: none;
  padding: 0;
}

.feature-list li {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.icon-lock::before {
  content: "🔒";
  font-size: 1.5rem;
}

/* ==================== 响应式调整 ==================== */
@media (max-width: 768px) {
  .brand-title {
    font-size: 2rem;
  }

  .input-group {
    flex-direction: column;
  }

  .btn-search {
    justify-content: center;
    width: 100%;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .security-alert-banner {
    flex-direction: column;
    text-align: center;
    padding: 1rem;
  }

  .brand-title {
    font-size: 1.8rem;
    margin: 1rem 0;
  }

  .btn-enter {
    width: 100%;
    justify-content: center;
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 个人中心中聊天室失效状态 */
.btn-disabled {
  background: #e0e0e0;
  color: #757575;
  cursor: not-allowed;
  padding: 8px 16px;
  border-radius: 4px;
}

/* 续费按钮 */
.btn-renew {
  background: #4CAF50;
  color: white;
  padding: 8px 16px;
  border-radius: 4px;
  margin-left: 10px;
  transition: background 0.3s;
}

.btn-renew:hover {
  background: #45a049;
}

.expired-room-actions {
  display: flex;
  align-items: center;
}
/* 权限选择器样式 - 新增部分 */
/* 权限选择器样式 - 高度调整版 */
.select-wrapper {
  margin-bottom: 1.5rem;
  position: relative;
  /* 新增高度控制 */
  height: calc(2.875rem * 1.2); /* 原基础高度2.875rem × 170% */
}

select[name="permissions"] {
  /* 原始尺寸 */
  width: 100%;
  padding: 0.8rem 2.5rem 0.8rem 1rem;
  /* 高度调整 */
  height: 100%; /* 继承容器高度 */
  min-height: 3.5rem; /* 新增最小高度 */
  /* 保持原有样式 */
  border: 2px solid var(--primary-blue);
  border-radius: 8px;
  background-color: var(--white);
  color: #333;
  font-size: 1rem;
  appearance: none;
  transition: border-color 0.2s;
  cursor: pointer;
}

/* 调整下拉箭头定位 */
.select-wrapper::after {
  content: "▼";
  position: absolute;
  right: 1.2rem;
  top: 55%; /* 微调垂直居中 */
  transform: translateY(-50%);
  color: var(--primary-blue);
  pointer-events: none;
  font-size: 1.1rem; /* 放大箭头 */
}

/* 移动端适配优化 */
@media (max-width: 768px) {
  .select-wrapper {
    height: calc(3rem * 1.2); /* 移动端基础高度适配 */
  }
  
  select[name="permissions"] {
    padding: 1.2rem 2.5rem 1.2rem 1rem; /* 增大点击区域 */
    font-size: 1.1rem;
  }

  .select-wrapper::after {
    right: 1.5rem;
    top: 57%;
    font-size: 1rem;
  }
}

/* 下拉选项高度适配 */
select[name="permissions"] option {
  padding: 1.1rem; /* 增加选项间距 */
  font-size: 0.95rem;
  line-height: 1.4;
}