/* Sidebar design */
  .custom-sidebar-nav .nav-link {
    font-weight: 500;
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 8px;
    color: #333;
    background: #f8f9fa;
    border: 1px solid #e7e7e7;
    transition: all 0.3s ease;
  }

  .custom-sidebar-nav .nav-link:hover {
    background: #0d6efd;
    color: #fff;
    transform: translateX(4px);
    box-shadow: 0 6px 15px rgba(13,110,253,0.3);
  }

  .custom-sidebar-nav .nav-link.active {
    background: #0d6efd;
    color: white;
    box-shadow: 0 6px 15px rgba(13,110,253,0.3);
  }

  /* Sticky fix */
  .sticky-sidebar {
    position: sticky;
    top: 120px; /* keeps away from banner */
    z-index: 10;
  }
  
  

.custom-sidebar-nav .nav-link {
  color: #08335a;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 6px;
  transition: background 0.18s, color 0.18s;
}
.custom-sidebar-nav .nav-link:hover,
.custom-sidebar-nav .nav-link.active {
  background: linear-gradient(92deg, #e9f0fa 60%, #fafafa 100%);
  color: #008cba;
  text-decoration: none;
}
.sticky-top {
  position: sticky;
  z-index: 1020;
}
.library-card {
  margin-bottom: 2rem;

}
.accordion-item {
  border-radius: 1.1rem !important;
  box-shadow: 0 2px 12px rgba(80, 96, 130, 0.09);
  border: none;
}
.semester-link {
  display: inline-block;
  background: #eef5fe;
  color: #045487;
  border-radius: 0.45rem;
  padding: 0.41rem 1.2rem;
  font-weight: 600;
  font-size: 0.95em;
  transition: all 0.2s;
  text-decoration: none;
}
.semester-link:hover,
.semester-link:focus {
  background: linear-gradient(95deg, #d9e8fd 65%, #e1ecfa 100%);
  color: #0072c9;
  text-decoration: underline;
}
@media (max-width: 991.98px) {
  aside.col-md-3 { margin-bottom: 1.5rem; }
}
@media (max-width: 767.98px) {
  .library-card { padding: 1.2rem 0.4rem; }
  .accordion-button { font-size: 1rem; padding-left: 1rem; }
}


/* Overall Section */
#Ouestion_Bank {
  background: #ffffff;
  border-radius: 20px;
  padding: 50px;
}

/* Accordion Header */
.accordion-button {
  border-radius: 10px !important;
  font-size: 18px;
  padding: 15px 20px;
  transition: 0.3s ease-in-out;
   background-color: #002449 !important;
}

.accordion-button:not(.collapsed) {
  background-color: #0d6efd !important;
  color: #fff !important;
  box-shadow: none;
}

.accordion-button.collapsed:hover {
  background: #e9ecef;
}

/* Accordion Cards */
.accordion-item {
  border-radius: 12px !important;
  border: none;
}

/* Table Styling */
.table {
  border-radius: 10px;
  overflow: hidden;
}

.table th {
  background: #f7f7f7 !important;
  font-weight: 700;
  padding: 15px;
  font-size: 15px;
}

.table td {
  padding: 12px;
  font-size: 15px;
}

/* Links – Beautiful hover effect */
.semester-link {
  color: #0d6efd;
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s ease;
}

.semester-link:hover {
  color: #0b5ed7;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .table th, .table td {
    font-size: 13px;
    padding: 10px;
  }

  #Ouestion_Bank {
    padding: 30px;
  }

  .accordion-button {
    font-size: 16px;
    padding: 12px 16px;
  }
}

  .resource-category-card {
    background: #ffffff;
    border-left: 5px solid #1b3955;
  }

  .resource-item {
    background: #f7faff;
    transition: all 0.3s ease;
  }

  .resource-item:hover {
    background: #eaf0ff;
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(48, 89, 215, 0.2);
  }

  .resource-link {
    font-weight: 600;
    color: #1c3ec5;
    text-decoration: none;
  }

  .resource-link:hover {
    color: #0f2a8c;
    text-decoration: underline;
  }

  .resource-icon {
    font-size: 1.4rem;
    color: #3458d3;
    margin-left: 10px;
  }

  .resource-item:hover .resource-icon {
    color: #0f2a8c;
  }

  h4.fw-bold {
    border-bottom: 2px solid #b2c7f9;
    padding-bottom: 6px;
  }
  .resource-category-card {

    transition: all 0.3s ease;
    border-left: 6px solid #0d6efd;
  }

  .resource-category-card:hover {
    background: #f1f5ff;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  }

  .resource-link {
    font-size: 1.05rem;
    text-decoration: none;
    color: #343a40;
    font-weight: 500;
    transition: all 0.25s ease;
    padding: 6px 0;
  }

  .resource-link i {
    font-size: 1.2rem;
    opacity: 0;
    transition: all 0.25s ease;
  }

  .resource-link:hover {
    color: #0d6efd;
    padding-left: 5px;
  }

  .resource-link:hover i {
    opacity: 1;
    transform: translateX(3px);
    color: #0d6efd;
  }

  .list-group-item {
    background: transparent !important;
  }
.accordion-button:not(.collapsed) {
    background-color: #002449 !important;
    color: #fff !important;
    box-shadow: none;
}