body { background-color: #f5f6fa; }
.card { border-radius: 0.75rem; }
.navbar-brand { letter-spacing: 0.03em; }
.sidebar-icon-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.sidebar-icon-link:hover .sidebar-icon-circle {
  background-color: #f0f2f5;
}

.sidebar-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  border: 1px solid #dee2e6;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  font-size: 28px;
}