/**
 * @file
 * A-Z Letter Filter + Checkbox Accordion Styling
 * for Majors, Degrees and Programs View
 */

/* ==========================================================================
   Filter Container
   ========================================================================== */

.majors-degrees-custom-filters {
  margin-bottom: 0;
}

/* ==========================================================================
   Clear Button
   ========================================================================== */

.filter-controls {
  margin-bottom: 30px;
}

.clear-filters-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: #d32f2f;
  color: #ffffff;
  border: none;
  border-radius: 0;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.clear-filters-btn:hover {
  background-color: #b71c1c;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(211, 47, 47, 0.3);
}

.clear-filters-btn:active {
  transform: translateY(0);
}

.clear-filters-btn .close-icon {
  width: 16px;
  height: 16px;
}

/* ==========================================================================
   A-Z Letter Filter
   ========================================================================== */

.letter-filter-section {
  background: #f8f9fa;
  border: 1px solid #e0e0e0;
  border-radius: 0;
  padding: 30px 20px;
  margin-bottom: 40px;
}

.letters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.letter-col {
  flex: 0 0 auto;
  padding: 0;
}

.letter-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: #ffffff;
  border: 2px solid #d0d0d0;
  border-radius: 0;
  color: #555;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
}

.letter-btn:hover {
  background: #18453B;
  border-color: #18453B;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(24, 69, 59, 0.2);
}

.letter-btn.active,
.letter-btn[aria-selected="true"] {
  background: #18453B;
  border-color: #18453B;
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(24, 69, 59, 0.3);
}

.letter-btn.letter-all {
  width: auto;
  padding: 0 16px;
  min-width: 60px;
}

/* Disabled letters (no programs) */
.letter-btn.disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

/* Mobile letter filter */
@media (max-width: 768px) {
  .letter-filter-section {
    padding: 15px;
  }

  .letters-row {
    gap: 6px;
  }

  .letter-btn {
    width: 35px;
    height: 35px;
    font-size: 0.9rem;
  }
}

/* ==========================================================================
   Filter Accordions
   ========================================================================== */

.filter-accordions-section {
  margin-bottom: 0;
}

.filter-accordion-wrapper {
  margin-bottom: 25px;
}

.filter-accordion {
  background: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.filter-accordion:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Accordion Trigger Button */
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: #f5f5f5;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.accordion-trigger:hover {
  background: #ebebeb;
}

.accordion-trigger:focus {
  outline: 2px solid #18453B;
  outline-offset: -2px;
}

.accordion-title {
  font-size: 1rem;
  font-weight: 600;
  color: #333;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.accordion-icon {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.filter-accordion.open .accordion-icon {
  transform: rotate(180deg);
}

/* Accordion Content */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.filter-accordion.open .accordion-content {
  max-height: 500px;
  padding: 20px;
}

/* Department accordion with scrollbar for long lists */
.filter-accordion[data-filter-type="department"] .accordion-content {
  max-height: 400px;
  overflow-y: auto;
  overflow-x: hidden;
}

.filter-accordion[data-filter-type="department"].open .accordion-content {
  max-height: 400px;
}

/* Custom scrollbar styling for department list */
.filter-accordion[data-filter-type="department"] .accordion-content::-webkit-scrollbar {
  width: 8px;
}

.filter-accordion[data-filter-type="department"] .accordion-content::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 0;
}

.filter-accordion[data-filter-type="department"] .accordion-content::-webkit-scrollbar-thumb {
  background: #18453B;
  border-radius: 0;
}

.filter-accordion[data-filter-type="department"] .accordion-content::-webkit-scrollbar-thumb:hover {
  background: #0f2e28;
}

/* Firefox scrollbar */
.filter-accordion[data-filter-type="department"] .accordion-content {
  scrollbar-width: thin;
  scrollbar-color: #18453B #f1f1f1;
}

/* Checkbox List */
.checkbox-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.checkbox-item {
  display: flex;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #f0f0f0;
  transition: background 0.2s ease;
}

.checkbox-item:last-child {
  border-bottom: none;
}

.checkbox-item:hover {
  background: #f8f9fa;
  padding-left: 8px;
  margin-left: -8px;
  margin-right: -8px;
  padding-right: 8px;
}

/* Custom Checkbox Styling */
.checkbox-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin: 0 12px 0 0;
  cursor: pointer;
  accent-color: #18453B;
  flex-shrink: 0;
}

.checkbox-item label {
  flex: 1;
  font-size: 0.95rem;
  color: #555;
  cursor: pointer;
  margin: 0;
  user-select: none;
}

.checkbox-item input[type="checkbox"]:checked + label {
  color: #18453B;
  font-weight: 600;
}

/* Checkbox focus state */
.checkbox-item input[type="checkbox"]:focus {
  outline: 2px solid #18453B;
  outline-offset: 2px;
}

/* ==========================================================================
   Filter States and Badges
   ========================================================================== */

/* Active filter count badge */
.accordion-trigger .filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 8px;
  background: #18453B;
  color: #ffffff;
  border-radius: 0;
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 8px;
}

/* ==========================================================================
   Search Box
   ========================================================================== */

.filter-search-box {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  transition: all 0.3s ease;
  height: 100%;
}

.filter-search-box .form-label {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: #333;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.filter-search-box .form-control {
  width: 100%;
  padding: 12px 16px;
  background: #ffffff;
  border: 2px solid #d0d0d0;
  border-radius: 0;
  font-size: 0.95rem;
  color: #555;
  transition: all 0.2s ease;
}

.filter-search-box .form-control:focus {
  outline: none;
  border-color: #18453B;
  box-shadow: 0 0 0 3px rgba(24, 69, 59, 0.1);
  background: #ffffff;
}

.filter-search-box .form-control::placeholder {
  color: #999;
  opacity: 1;
}

.filter-search-box .form-control:hover {
  border-color: #18453B;
}

/* ==========================================================================
   Mobile Responsiveness
   ========================================================================== */

@media (max-width: 992px) {
  .filter-accordion-wrapper {
    margin-bottom: 15px;
  }
}

@media (max-width: 768px) {
  .filter-accordions-section {
    margin-bottom: 0;
  }

  .accordion-trigger {
    padding: 14px 16px;
  }

  .accordion-title {
    font-size: 0.95rem;
  }

  .filter-accordion.open .accordion-content {
    padding: 16px;
    max-height: 400px;
    overflow-y: auto;
  }

  .checkbox-item {
    padding: 12px 0;
  }

  /* Department accordion scrollbar on mobile */
  .filter-accordion[data-filter-type="department"].open .accordion-content {
    max-height: 300px;
  }

  /* Search box mobile adjustments */
  .filter-search-box {
    padding: 0;
  }

  .filter-search-box .form-control {
    padding: 14px 16px;
  }
}

/* ==========================================================================
   Loading and Transition States
   ========================================================================== */

.majors-degrees-custom-filters.filtering {
  opacity: 0.6;
  pointer-events: none;
}

.accordion-content {
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Accessibility Improvements
   ========================================================================== */

/* Focus visible for keyboard navigation */
.letter-btn:focus-visible,
.accordion-trigger:focus-visible,
.checkbox-item input:focus-visible,
.filter-search-box .form-control:focus-visible {
  outline: 3px solid #18453B;
  outline-offset: 2px;
}

/* Screen reader only text */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .letter-btn,
  .filter-accordion {
    border-width: 2px;
  }

  .accordion-trigger {
    border-bottom: 2px solid #d0d0d0;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .letter-btn,
  .accordion-trigger,
  .accordion-content,
  .accordion-icon,
  .filter-accordion,
  .filter-search-box,
  .filter-search-box .form-control {
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.checkbox-list:empty::before {
  content: "No options available";
  display: block;
  padding: 20px;
  text-align: center;
  color: #999;
  font-style: italic;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .majors-degrees-custom-filters {
    display: none;
  }
}