/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: #f5f5f5;
}

/* 应用容器 */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* 头部样式 */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  height: 60px;
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-left {
  display: flex;
  align-items: center;
}

.logo {
  height: 40px;
  margin-right: 10px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.logout-btn {
  padding: 8px 16px;
  background-color: #f44336;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.logout-btn:hover {
  background-color: #d32f2f;
}

/* 主内容区域 */
.app-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* 侧边栏 */
.sidebar {
  width: 240px;
  background-color: #fff;
  border-right: 1px solid #e0e0e0;
  overflow-y: auto;
}

.menu-list {
  list-style: none;
  padding: 20px 0;
}

.menu-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.menu-item:hover {
  background-color: #f5f5f5;
}

.menu-icon {
  width: 24px;
  height: 24px;
  margin-right: 12px;
}

.submenu {
  list-style: none;
  padding-left: 20px;
}

/* 内容区域 */
.content-area {
  flex: 1;
  overflow: hidden;
}

.page-content {
  width: 100%;
  height: 100%;
  border: none;
}