.sidebar {
  background: #f7f8fa;
  color: #1f2937;
  border-right: 1px solid #e5e7eb;
}
.sidebar-header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
}
.logo-title {
  color: #111827;
}
.logo-sub {
  color: #6b7280;
}
.sidebar-nav button {
  color: #374151;
  background: transparent;
}
.sidebar-nav button:hover {
  background: #eef2ff;
  color: #111827;
}
.sidebar-nav button.active {
  background: #e0e7ff;
  color: #1f3864;
  border-right: 3px solid #1a56db;
}
.sidebar-footer {
  background: #ffffff;
  border-top: 1px solid #e5e7eb;
  color: #374151;
}