/**
 * @file
 * Styles for Section pages with deep navigation (universal for all sections).
 */

/* Section Page Layout */
.section-leftbar,
.undergraduate-leftbar,
.admissions-leftbar,
.postgraduate-leftbar,
.phd-leftbar,
.faculty-leftbar,
.research-leftbar,
.facilities-leftbar {
  background: #f8f9fa;
  border-radius: 8px;
  padding: 1.5rem 1rem;
  margin-bottom: 2rem;
  min-height: 500px;
}

.section-right-body,
.undergraduate-right-body,
.admissions-right-body,
.postgraduate-right-body,
.phd-right-body,
.faculty-right-body,
.research-right-body,
.facilities-right-body {
  padding: 1.5rem;
}

/* Universal Section Sidebar Navigation */
.section-sidebar,
.undergraduate-sidebar,
.admissions-sidebar,
.postgraduate-sidebar,
.phd-sidebar,
.faculty-sidebar,
.research-sidebar,
.facilities-sidebar {
  background: #ffffff;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.section-sidebar .accordion-button,
.undergraduate-sidebar .accordion-button,
.admissions-sidebar .accordion-button,
.postgraduate-sidebar .accordion-button,
.phd-sidebar .accordion-button,
.faculty-sidebar .accordion-button,
.research-sidebar .accordion-button,
.facilities-sidebar .accordion-button {
  background: #007bff;
  color: white;
  border: none;
  font-weight: 600;
  padding: 1rem 1.25rem;
  font-size: 1.1rem;
}

.section-sidebar .accordion-button:not(.collapsed),
.undergraduate-sidebar .accordion-button:not(.collapsed),
.admissions-sidebar .accordion-button:not(.collapsed),
.postgraduate-sidebar .accordion-button:not(.collapsed),
.phd-sidebar .accordion-button:not(.collapsed),
.faculty-sidebar .accordion-button:not(.collapsed),
.research-sidebar .accordion-button:not(.collapsed),
.facilities-sidebar .accordion-button:not(.collapsed) {
  background: #0056b3;
  color: white;
  box-shadow: none;
}

.section-sidebar .accordion-button:focus,
.undergraduate-sidebar .accordion-button:focus,
.admissions-sidebar .accordion-button:focus,
.postgraduate-sidebar .accordion-button:focus,
.phd-sidebar .accordion-button:focus,
.faculty-sidebar .accordion-button:focus,
.research-sidebar .accordion-button:focus,
.facilities-sidebar .accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
}

.section-sidebar .accordion-body,
.undergraduate-sidebar .accordion-body,
.admissions-sidebar .accordion-body,
.postgraduate-sidebar .accordion-body,
.phd-sidebar .accordion-body,
.faculty-sidebar .accordion-body,
.research-sidebar .accordion-body,
.facilities-sidebar .accordion-body {
  padding: 0;
  background: #ffffff;
}

/* Navigation Links - Universal */
.section-sidebar .nav-link,
.undergraduate-sidebar .nav-link,
.admissions-sidebar .nav-link,
.postgraduate-sidebar .nav-link,
.phd-sidebar .nav-link,
.faculty-sidebar .nav-link,
.research-sidebar .nav-link,
.facilities-sidebar .nav-link {
  color: #495057;
  padding: 0.75rem 1.25rem;
  border-radius: 0;
  transition: all 0.3s ease;
  border-bottom: 1px solid #f1f3f4;
}

.section-sidebar .nav-link:hover,
.undergraduate-sidebar .nav-link:hover,
.admissions-sidebar .nav-link:hover,
.postgraduate-sidebar .nav-link:hover,
.phd-sidebar .nav-link:hover,
.faculty-sidebar .nav-link:hover,
.research-sidebar .nav-link:hover,
.facilities-sidebar .nav-link:hover {
  background-color: #f8f9fa;
  color: #007bff;
  text-decoration: none;
}

.section-sidebar .nav-link.active,
.undergraduate-sidebar .nav-link.active,
.admissions-sidebar .nav-link.active,
.postgraduate-sidebar .nav-link.active,
.phd-sidebar .nav-link.active,
.faculty-sidebar .nav-link.active,
.research-sidebar .nav-link.active,
.facilities-sidebar .nav-link.active {
  background-color: #e3f2fd;
  color: #0056b3;
  border-left: 4px solid #007bff;
  font-weight: 500;
}

.section-sidebar .nav-link i,
.undergraduate-sidebar .nav-link i,
.admissions-sidebar .nav-link i,
.postgraduate-sidebar .nav-link i,
.phd-sidebar .nav-link i,
.faculty-sidebar .nav-link i,
.research-sidebar .nav-link i,
.facilities-sidebar .nav-link i {
  font-size: 0.875rem;
  width: 16px;
  text-align: center;
}

/* Nested Navigation */
.undergraduate-sidebar .ms-3 .nav-link,
.undergraduate-nav-sidebar .ms-3 .nav-link {
  font-size: 0.9rem;
  color: #6c757d;
  padding: 0.5rem 1.25rem;
  padding-left: 2.5rem;
  background-color: #fafbfc;
}

.undergraduate-sidebar .ms-3 .nav-link:hover,
.undergraduate-nav-sidebar .ms-3 .nav-link:hover {
  background-color: #f1f3f4;
  color: #495057;
}

.undergraduate-sidebar .ms-3 .nav-link.active,
.undergraduate-nav-sidebar .ms-3 .nav-link.active {
  background-color: #e8f4fd;
  color: #0056b3;
  border-left: 3px solid #17a2b8;
}

/* Icons */
.undergraduate-sidebar .bi-mortarboard,
.undergraduate-nav-sidebar .bi-mortarboard {
  font-size: 1.1rem;
}

.undergraduate-sidebar .bi-chevron-right,
.undergraduate-nav-sidebar .bi-chevron-right {
  color: #28a745;
  font-weight: bold;
}

.undergraduate-sidebar .bi-dot,
.undergraduate-nav-sidebar .bi-dot {
  color: #6c757d;
}

/* Responsive Design */
@media (max-width: 991.98px) {
  .undergraduate-leftbar {
    margin-bottom: 1rem;
    padding: 1rem;
  }
  
  .undergraduate-right-body {
    padding: 1rem;
  }
  
  .undergraduate-sidebar .nav-link,
  .undergraduate-nav-sidebar .nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .undergraduate-sidebar .ms-3 .nav-link,
  .undergraduate-nav-sidebar .ms-3 .nav-link {
    padding-left: 2rem;
    font-size: 0.85rem;
  }
  .section-leftbar,
.undergraduate-leftbar,
.admissions-leftbar,
.postgraduate-leftbar,
.phd-leftbar,
.faculty-leftbar,
.research-leftbar,
.facilities-leftbar{
  min-height: auto;
}
}

/* Animation for collapsible sections */
.undergraduate-sidebar .accordion-collapse,
.undergraduate-nav-sidebar .accordion-collapse {
  transition: all 0.3s ease;
}

/* Active trail highlighting */
.undergraduate-sidebar .nav-item.active > .nav-link,
.undergraduate-nav-sidebar .nav-item.active > .nav-link {
  font-weight: 600;
}

/* Hover effects for parent items with children */
.undergraduate-sidebar .nav-item.has-children > .nav-link:hover,
.undergraduate-nav-sidebar .nav-item.has-children > .nav-link:hover {
  background: linear-gradient(90deg, #f8f9fa 0%, #e9ecef 100%);
}

/* Chevron rotation for nested items with children */
.sidebar .nav-link .bi-chevron-down {
  transition: transform 0.3s ease;
  font-size: 0.875rem;
}

.sidebar .nav-link[aria-expanded="true"] .bi-chevron-down,
.sidebar .nav-link:not(.collapsed) .bi-chevron-down {
  transform: rotate(180deg);
}

.sidebar .nav-link .rotate-180 {
  transform: rotate(180deg);
}

/* Nested navigation items styling */
.sidebar .accordion-body .nav-link {
  color: #ffffff !important;
  /* background-color: rgba(255, 255, 255, 0.1); */
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.65rem 1rem;
  font-size: 0.95rem;
}

.sidebar .accordion-body .nav-link:hover {
  background-color: rgba(255, 255, 255, 0.2);
  color: #ffffff !important;
}

.sidebar .accordion-body .nav-link.active {
  /* background-color: rgba(255, 255, 255, 0.25); */
  color: #ffffff !important;
  font-weight: 500;
  border-left: 3px solid #ffffff;
}

.sidebar .accordion-body .nav-link i {
  color: #ffffff !important;
}

/* Deeply nested items */
.sidebar .accordion-body .ms-3 .nav-link {
  padding-left: 2rem;
  font-size: 0.9rem;
}