/* Sidebar container */
.sidebar {
  background-color: #fff !important;
  border-radius: 0.75rem;
  margin: 2rem auto 0 auto;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* Sidebar block */
.sidebar-links {
  background: #fff;
  border-radius: 1rem;
  padding: 1rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: left;
  font-size: 1rem;
}

/* Sidebar title */
.sidebar-links .sidebar-title {
  font-size: 1.5rem;
  font-weight: 900;
  text-transform: uppercase;
  color: #495057;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
  text-decoration: underline;
  text-align: center;
}

/* Nav styles */
.sidebar .nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
  width: 100%;
}

.sidebar .nav-item {
  margin-bottom: 0.25rem;
  width: 100%;
  text-align: left;
}

.sidebar .nav-link {
  color: #495057;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  text-decoration: none;
  display: block;
  transition: all 0.2s ease-in-out;
}

.sidebar .nav-link:hover {
  background-color: #f1f3f5;
  color: #007bff;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

.sidebar .nav-link[aria-expanded="true"] {
  background-color: #e0e0e0;
  font-weight: 600;
  color: #212529;
}

/* Dropdown arrows */
.sidebar .nav-link.dropdown-toggle::after {
  float: right;
  transition: transform 0.3s ease;
}

.sidebar .nav-link[aria-expanded="true"]::after {
  transform: rotate(90deg);
  color: #007bff;
}

/* Submenu */
.sidebar .submenu {
  margin-top: 0.25rem;
  border-left: 2px solid #dee2e6;
  padding-left: 0.75rem;
  text-align: center;
  width: 100%;
}

.sidebar .submenu .nav-link:hover {
  background-color: #e9ecef;
}

/* Collapse transitions */
.sidebar .collapse {
  transition: all 0.3s ease-in-out;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .sidebar {
    margin-bottom: 1.5rem;
    width: 80vw;
  }
}