.sidebar {
  width: $sidebar-width;
  height: calc(100vh - $footer-height);
  background: $bg-darker;
  padding: 1.5rem;
  position: fixed;
  left: 0;
  top: 0;
  overflow-y: auto;
  color: $text-color;

  h2 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: $text-muted;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
}