html,
body {
  margin: 0;
  padding: 0;
  height: 100vh;
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
  background: #ffffff;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-header h1 {
  margin: 0;
  font-size: 18px;
  color: #333;
}

.close-btn {
  background: none;
  border: none;
  font-size: 24px;
  color: #666;
  cursor: pointer;
  padding: 0 8px;
  line-height: 1;
}

.close-btn:hover {
  color: #333;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}