.sidebar {
  position: fixed;
  z-index: 5000;
  width: 20rem;
  height: 100%;
  overflow-y: auto;
  box-shadow: var(--shadow-spread-light);
  transition: all 0.25s;
  background: var(--white) url('/assets/logo.png') no-repeat bottom center;
  background-size: 100px 100px;
  transition: all 0.25s;
}

@media (max-width: 1000px) {
  .sidebar {
    width: 15rem;
    transition: all 0.25s;
  }
}

@media (max-width: 750px) {
  .sidebar {
    position: fixed;
    left: -15rem;
    transition: all 0.25s;
  }
}

.sidebar:hover {
  box-shadow: var(--shadow-spread-dark);
  transition: all 0.25s;
}

.sidebar > * {
  width: 100%;
  padding: 0 1.2rem;
  text-align: center;

  opacity: 0;
  animation: 0.3s fade-in ease-in-out forwards;
}

.sidebar header {
  padding: 0.5rem 1.2rem;
  color: var(--white);
  background-color: var(--primary-dark-1);
  margin-bottom: 1.5rem;
  opacity: 1;
}

.sidebar .info > * {
  margin-bottom: 1rem;
}
.sidebar .info .avatar img {
  width: 104px;
  height: 104px;
  border-radius: 50%;
  padding: 4px;
  box-shadow: var(--shadow-spread);
  background-color: #fff;
}
.sidebar .info .description {
  color: var(--secondary);
  font-size: var(--text-sm);
}
.sidebar .info .about a {
  text-decoration: underline;
  color: var(--primary);
}
.sidebar .info .about a:hover {
  color: var(--primary-light-2);
}

.sidebar .links ul {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.sidebar .links ul .links-item a {
  width: 2rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s;
}
.sidebar .links ul .links-item a:hover {
  background-color: var(--primary-light-2);
  transition: all 0.25s;
}

.sidebar nav {
  background-color: var(--white);
  margin-top: 1rem;
}
.sidebar nav ul,
.sidebar nav ul li a {
  display: flex;
}
.sidebar nav ul {
  justify-content: center;
  align-items: center;

  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  border-top: 1px solid var(--primary-light-3);
  border-bottom: 1px solid var(--primary-light-3);
  transition: all 0.25s;
}
.sidebar nav ul:hover {
  box-shadow: var(--shadow-inner);
  transition: all 0.25s;
}
.sidebar nav ul li {
  margin-right: 1.5rem;
}
.sidebar nav ul li:last-child {
  margin-right: 0;
}
.sidebar nav ul li a {
  flex-direction: column;
  transition: color 0.25s;
}
.sidebar nav ul li a .nav-item__count {
  font-size: var(--text-lg);
}
.sidebar nav ul li a:hover {
  color: var(--primary);
  transition: color 0.25s;
}
.sidebar .catalogue {
  margin-bottom: 1rem;
}
.sidebar .catalogue .toc {
  font-size: var(--text-sm);
  border: 1px dashed var(--primary);
  border-radius: 5px;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  text-align: left;
}
.sidebar .catalogue .toc ol {
  padding-left: 1rem;
}
.sidebar .catalogue .toc ol a {
  line-height: 2em;
  color: var(--primary-dark-2);
}
.sidebar .catalogue .toc ol a:hover {
  color: var(--primary-light-2);
}