body {
  background: #f8f9fa;
  font-family: Arial, sans-serif;
}

.sidebar {
  width: 220px;
  min-height: 100vh;
  border-right: 1px solid #dee2e6;
  background: #fff;
}

.sidebar .avatar-lg {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
}

.sidebar .nav-item {
  padding: 12px 0;
  cursor: pointer;
  color: #333;
  border-top: 1px solid #f0f0f0;
  font-weight: 500;
}

.sidebar .nav-item:hover {
  background-color: #f1f1f1;
}

.sidebar .nav-item.active {
  background-color: #e9ecef;
  font-weight: bold;
}

.content {
  background: #fff;
  min-height: 100vh;
}

#content-area .form-control {
  max-width: 500px;
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .content {
    padding: 1rem;
  }
}