.app-header {
  background: #005bb5;
  color: #fff;
  padding: 0.75rem 1rem;
}

.app-shell {
  display: flex;
  min-height: calc(100vh - 48px);
}

.sidebar {
  width: 220px;
  background: #1f2933;
  color: #e5e7eb;
  padding: 1rem 0.75rem;
}

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

.sidebar li {
  margin-bottom: 0.5rem;
}

.sidebar a {
  color: #e5e7eb;
  text-decoration: none;
  font-size: 0.95rem;
}

.sidebar a:hover {
  text-decoration: underline;
}

.main-content {
  flex: 1;
  padding: 1rem 1.5rem;
}