/* 基础布局样式 */
.app-container {
  display: flex;
  min-height: 100vh;
  background-color: #f5f7fa;
}

/* 导航栏样式 */
.app-nav {
  width: 240px;
  background-color: #2c3e50;
  color: white;
  padding: 20px 0;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.nav-header {
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-header h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 500;
}

/* 导航链接样式 */
.nav-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links li {
  margin: 5px 0;
}

.nav-links a {
  display: block;
  color: #ecf0f1;
  text-decoration: none;
  padding: 12px 20px;
  transition: all 0.3s ease;
}

.nav-links a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-links a.active {
  background-color: #3498db;
  color: white;
}

.nav-links a span {
  display: inline-block;
}

/* 主内容区样式 */
.app-content {
  flex: 1;
  padding: 20px;
  background-color: white;
  overflow-y: auto;
}