body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  background: #f2f2f2;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: 200px;
  background-color: #2c3e50;
  color: white;
  padding: 20px;
  height: 100vh;
  box-sizing: border-box;
}

.sidebar h2 {
  font-size: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid #444;
  padding-bottom: 10px;
}

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

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

.sidebar ul li a {
  color: white;
  text-decoration: none;
  transition: color 0.2s ease;
  cursor: pointer;
}

.sidebar ul li a:hover {
  color: #1abc9c;
}

.main-content {
  flex-grow: 1;
  padding: 40px;
  overflow-y: auto;
}

.profile-card {
  text-align: center;
  margin-bottom: 40px;
}

.profile-img {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 4px solid #1abc9c;
  object-fit: cover;
  margin-bottom: 20px;
}

.profile-card h1 {
  font-size: 26px;
  margin: 0;
  color: #2c3e50;
}

.profile-card h2 {
  font-size: 18px;
  color: #555;
  font-weight: normal;
}

.content-section {
  background: white;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.content-section h3 {
  margin-top: 0;
  color: #2c3e50;
}