body {
  margin: 0;
  font-family: sans-serif;
  background-color: #f5f9ff;
}

#layout {
  display: flex;
}

.sidebar {
  width: 220px;
  background-color: #ffffff;
  border-left: 2px solid #cce0ff;
  padding: 20px;
  height: 100vh;
  box-shadow: -2px 0 5px rgba(0,0,0,0.05);
}

.sidebar .logo {
  font-size: 20px;
  font-weight: bold;
  color: #2a65ff;
  margin-bottom: 10px;
}

.sidebar nav ul {
  list-style: none;
  padding: 0;
}

.sidebar nav ul li {
  margin: 15px 0;
}

.sidebar nav ul li a {
  text-decoration: none;
  color: #2a2a2a;
  font-weight: 500;
}

.topbar {
  position: fixed;
  top: 0;
  right: 220px;
  left: 0;
  height: 60px;
  background-color: #e6f0ff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

#content {
  margin-top: 60px;
  margin-right: 220px;
  padding: 30px;
}