.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 60px;
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 10;
}

.app-logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  color: #2c3e50;
}

.app-logo img {
  height: 32px;
  margin-right: 10px;
}

.search-bar {
  flex: 1;
  max-width: 400px;
  margin: 0 20px;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: 8px 12px;
  padding-left: 35px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.search-bar::before {
  content: '🔍';
  position: absolute;
  left: 10px;
  top: 8px;
  color: #aaa;
}

.action-buttons {
  display: flex;
  gap: 10px;
}

.action-btn {
  padding: 8px 12px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

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

.app-main {
  display: flex;
  flex: 1;
}

.app-sidebar {
  width: 240px;
  background-color: #fff;
  box-shadow: 2px 0 4px rgba(0, 0, 0, 0.05);
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 60px);
}

.sidebar-header {
  padding: 0 20px 15px;
  border-bottom: 1px solid #eee;
  font-weight: bold;
  font-size: 1.1rem;
}

.feature-list {
  list-style: none;
  margin-top: 15px;
}

.feature-item {
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background-color 0.2s;
}

.feature-item:hover {
  background-color: #f0f7ff;
}

.feature-item.active {
  background-color: #e6f7ff;
  border-right: 3px solid #1890ff;
}

.feature-name {
  flex: 1;
}

.feature-count {
  font-size: 12px;
  padding: 2px 8px;
  background-color: #eee;
  border-radius: 10px;
}

.add-feature-btn {
  margin: 20px;
  padding: 8px 12px;
  background-color: #f0f7ff;
  color: #1890ff;
  border: 1px dashed #1890ff;
  border-radius: 4px;
  width: calc(100% - 40px);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.add-feature-btn:hover {
  background-color: #e6f7ff;
}

.sidebar-footer {
  margin-top: auto;
  padding: 15px 20px;
  font-size: 12px;
  color: #999;
  border-top: 1px solid #eee;
}

.app-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}