/* SPECTRA Table of Contents Block Styles */

.spectra-table-of-contents-block {
  background: var(--bs-light);
  border: 1px solid var(--bs-border-color);
  border-radius: 8px;
  padding: 1.5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Optional sticky positioning */
.toc-sticky {
  position: sticky;
  top: var(--toc-sticky-top, 80px);
}

.spectra-table-of-contents-block--sticky,
.toc-sticky .spectra-table-of-contents-block {
  position: sticky;
  top: var(--toc-sticky-top, 80px);
  max-height: calc(100vh - var(--toc-sticky-top, 80px) - 1rem);
  overflow: auto;
  z-index: 2;
}

/* Header */
.spectra-table-of-contents-block .toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--bs-border-color);
}

.spectra-table-of-contents-block .toc-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--bs-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.spectra-table-of-contents-block .toc-toggle {
  background: none;
  border: 1px solid var(--bs-border-color);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  /*color: var(--bs-secondary);*/
  transition: all 0.2s ease;
  min-width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spectra-table-of-contents-block .toc-toggle:hover {
  background-color: var(--bs-light);
  border-color: var(--bs-secondary);
  color: var(--bs-dark);
}

.spectra-table-of-contents-block .toc-toggle:focus {
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
}

.spectra-table-of-contents-block .toc-toggle-icon {
  font-weight: bold;
  font-size: 1.2rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.spectra-table-of-contents-block .toc-toggle[aria-expanded="false"] .toc-toggle-icon {
  transform: rotate(90deg);
}

/* Content */
.spectra-table-of-contents-block .toc-content {
  transition: all 0.3s ease;
}

.spectra-table-of-contents-block .toc-content.collapsed {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
}

.spectra-table-of-contents-block .toc-navigation {
  margin: 0;
}

/* Lists */
.spectra-table-of-contents-block .toc-list,
.spectra-table-of-contents-block .toc-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.spectra-table-of-contents-block .toc-list {
  counter-reset: toc-level-1;
}

.spectra-table-of-contents-block .toc-sublist.toc-level-2 {
  counter-reset: toc-level-2;
}
.spectra-table-of-contents-block .toc-sublist.toc-level-3 {
  counter-reset: toc-level-3;
}
.spectra-table-of-contents-block .toc-sublist.toc-level-4 {
  counter-reset: toc-level-4;
}

/*
.spectra-table-of-contents-block .toc-sublist {
  padding-left: 1.5rem;
  margin-top: 0.25rem;
}
*/
/* Items */
.spectra-table-of-contents-block .toc-item-level-1 {
  counter-increment: toc-level-1;
}
.spectra-table-of-contents-block .toc-item-level-2 {
  counter-increment: toc-level-2;
}
.spectra-table-of-contents-block .toc-item-level-3 {
  counter-increment: toc-level-3;
}
.spectra-table-of-contents-block .toc-item-level-4 {
  counter-increment: toc-level-4;
}

.spectra-table-of-contents-block .toc-item {
  margin: 0.25rem 0;
}

.spectra-table-of-contents-block .toc-link {
  display: flex;
  align-items: flex-start;
  padding: 0.5rem 0.75rem;
  text-decoration: none;
  color: var(--bs-dark);
  border-radius: 4px;
  transition: all 0.2s ease;
  line-height: 1.4;
  word-break: break-word;
}

.spectra-table-of-contents-block .toc-link:hover {
  background-color: var(--bs-light);
  color: var(--bs-primary);
  text-decoration: none;
}

.spectra-table-of-contents-block .toc-link:focus {
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
  background-color: var(--bs-light);
}

.spectra-table-of-contents-block .toc-link.active {
  background-color: var(--bs-primary);
  color: white;
  font-weight: 500;
}

/* Numbers */
.spectra-table-of-contents-block[data-show-numbers="true"] .toc-number {
  display: inline-block;
  min-width: 1.5rem;
  margin-right: 0.5rem;
  font-weight: 500;
  color: var(--bs-secondary);
  font-size: 0.875rem;
}

.spectra-table-of-contents-block[data-show-numbers="true"] .toc-item-level-1 > a > .toc-number::before {
  content: counter(toc-level-1) ".";
}
.spectra-table-of-contents-block[data-show-numbers="true"] .toc-item-level-2 > a > .toc-number::before {
  content: counter(toc-level-1) "." counter(toc-level-2);
}
.spectra-table-of-contents-block[data-show-numbers="true"] .toc-item-level-3 > a > .toc-number::before {
  content: counter(toc-level-1) "." counter(toc-level-2) "." counter(toc-level-3);
}
.spectra-table-of-contents-block[data-show-numbers="true"] .toc-item-level-4 > a > .toc-number::before {
  content: counter(toc-level-1) "." counter(toc-level-2) "." counter(toc-level-3) "." counter(toc-level-4);
}

.spectra-table-of-contents-block[data-show-numbers="false"] .toc-number {
  display: none;
}

/* Text */
.spectra-table-of-contents-block .toc-text {
  flex: 1;
}

/* Level-specific styling */
.spectra-table-of-contents-block .toc-item-level-1 > .toc-link {
  font-weight: 600;
  font-size: 1rem;
}

.spectra-table-of-contents-block .toc-item-level-2 > .toc-link {
  font-weight: 500;
  font-size: 0.95rem;
}

.spectra-table-of-contents-block .toc-item-level-3 > .toc-link {
  font-weight: 400;
  font-size: 0.9rem;
}

.spectra-table-of-contents-block .toc-item-level-4 > .toc-link,
.spectra-table-of-contents-block .toc-item-level-5 > .toc-link,
.spectra-table-of-contents-block .toc-item-level-6 > .toc-link {
  font-weight: 400;
  font-size: 0.875rem;
  /*color: var(--bs-secondary);*/
}

/* Loading and empty states */
.spectra-table-of-contents-block .toc-loading,
.spectra-table-of-contents-block .toc-empty,
.spectra-table-of-contents-block .toc-noscript {
  text-align: center;
  padding: 1rem;
  /*color: var(--bs-secondary);*/
  font-style: italic;
}

.spectra-table-of-contents-block .toc-loading {
  background-color: var(--bs-light);
  border-radius: 4px;
}

.spectra-table-of-contents-block .toc-empty {
  background-color: rgba(var(--bs-warning-rgb), 0.1);
  border: 1px solid var(--bs-warning);
  border-radius: 4px;
  color: var(--bs-warning);
}

.spectra-table-of-contents-block .toc-noscript {
  background-color: rgba(var(--bs-danger-rgb), 0.1);
  border: 1px solid var(--bs-danger);
  border-radius: 4px;
  color: var(--bs-danger);
}

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Responsive design */
@media (max-width: 768px) {
  .spectra-table-of-contents-block {
    padding: 1rem;
  }

  .spectra-table-of-contents-block .toc-title {
    font-size: 1.1rem;
  }

  .spectra-table-of-contents-block .toc-sublist {
    padding-left: 1rem;
  }

  .spectra-table-of-contents-block .toc-link {
    padding: 0.4rem 0.5rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .spectra-table-of-contents-block {
    padding: 0.75rem;
  }

  .spectra-table-of-contents-block .toc-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .spectra-table-of-contents-block .toc-toggle {
    align-self: flex-end;
  }
}

/* Print styles */
@media print {
  .spectra-table-of-contents-block {
    background: white;
    border: 1px solid #000;
    box-shadow: none;
    page-break-inside: avoid;
  }

  .spectra-table-of-contents-block .toc-toggle {
    display: none;
  }

  .spectra-table-of-contents-block .toc-content.collapsed {
    max-height: none;
    overflow: visible;
    opacity: 1;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .spectra-table-of-contents-block {
    border: 2px solid #000;
    background: #fff;
  }

  .spectra-table-of-contents-block .toc-link {
    border: 1px solid transparent;
  }

  .spectra-table-of-contents-block .toc-link:hover,
  .spectra-table-of-contents-block .toc-link:focus {
    border-color: #000;
    background: #fff;
    color: #000;
  }

  .spectra-table-of-contents-block .toc-link.active {
    background: #000;
    color: #fff;
    border-color: #000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .spectra-table-of-contents-block .toc-content,
  .spectra-table-of-contents-block .toc-toggle-icon,
  .spectra-table-of-contents-block .toc-link {
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Disable sticky on small screens to avoid layout jumps */
@media (max-width: 768px) {
  .toc-sticky {
    position: static;
  }

  .spectra-table-of-contents-block--sticky,
  .toc-sticky .spectra-table-of-contents-block {
    position: static;
    max-height: none;
    overflow: visible;
  }
}