/**
 * TOC Styles
 * Sticky table of contents for headings
 */

.toc-wrapper {
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 40px;
  max-height: calc(100vh - 60px);
  padding: 0;
  overflow: hidden;
  z-index: 50;
  font-size: 0.95rem;
}

/* TOC Header */
.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1rem 0 1rem;
  flex-shrink: 0;
  font-size: small;
}

.toc-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-color, #000000);
}

.dark-mode .toc-title {
  color: var(--text-color-dark, #ffffff);
}

/* TOC Toggle Button */
.toc-toggle {
  background: none;
  border: none;
  margin: unset;
  cursor: pointer;
  padding: 0.25rem 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  transition: opacity 0.2s ease;
  flex-shrink: 0;
}

.toc-toggle:hover {
  opacity: 0.7;
}

.toc-toggle:active {
  opacity: 0.5;
}

.toc-toggle-icon {
  display: inline-block;
  line-height: 1;
}

/* TOC Navigation */
.toc-nav {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb, #cccccc) var(--bg-color, #ffffff);
  font-size: 0.7rem;
}

.dark-mode .toc-nav {
  scrollbar-color: var(--scrollbar-thumb-dark, #444444) var(--bg-color-dark, #1a1a1a);
}

.toc-nav::-webkit-scrollbar {
  width: 6px;
}

.toc-nav::-webkit-scrollbar-track {
  background: var(--bg-color, #ffffff);
}

.dark-mode .toc-nav::-webkit-scrollbar-track {
  background: var(--bg-color-dark, #1a1a1a);
}

.toc-nav::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb, #cccccc);
  border-radius: 3px;
}

.toc-nav::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover, #999999);
}

.dark-mode .toc-nav::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb-dark, #444444);
}

.dark-mode .toc-nav::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-dark-hover, #666666);
}

/* TOC List Structure */
.toc-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-nav li {
  margin: 0;
  padding: 0;
}

.toc-nav ul ul {
  margin-left: 1rem;
  padding-left: 0;
}

.toc-nav a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--link-color, #0066cc);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
  line-height: 1.4;
  word-break: break-word;
}

.dark-mode .toc-nav a {
  color: var(--link-color-dark, #66b3ff);
}

.toc-nav a:hover {
  background-color: var(--link-hover-bg, #f0f0f0);
  border-left-color: var(--link-color, #0066cc);
}

.dark-mode .toc-nav a:hover {
  background-color: var(--link-hover-bg-dark, #333333);
  border-left-color: var(--link-color-dark, #66b3ff);
}

.toc-nav a.is-active {
  color: var(--link-active-color, #0052a3);
  font-weight: 600;
  background-color: var(--link-active-bg, #e8f0ff);
  border-left-color: var(--link-color, #0066cc);
}

.dark-mode .toc-nav a.is-active {
  color: var(--link-active-color-dark, #99ccff);
  background-color: var(--link-active-bg-dark, #1a3a52);
  border-left-color: var(--link-color-dark, #66b3ff);
}

/* Closed State (Mobile/Collapsed) */
.toc-wrapper.is-closed .toc-nav {
  display: none;
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
  .toc-wrapper {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 30vh;
    border-radius: 12px 12px 0 0;
    margin: 0 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: none;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    background: oklch(from var(--primary-2) l c h / 0.7);
  }

  .toc-wrapper::before {
    content: "";
    position: absolute;
    inset: 0;
    backdrop-filter: blur(5px);
    border-radius: inherit;
    z-index: -1;
  }

  .toc-wrapper.is-closed {
    bottom: auto;
    top: 0;
    max-height: auto;
    border-radius: unset;
    width: max-content;
    margin: 0;
    z-index: 1000;
    height: var(--navbar-height);
    right: 40vw;
    left: unset;
    background: transparent;
    box-shadow: unset;
    border: unset;
  }

  .toc-wrapper.is-closed::before {
    backdrop-filter: unset;
  }

  .toc-wrapper.is-closed .toc-header {
    padding: 0;
    height: 100%;
  }

  .toc-wrapper.is-closed .toc-header .toc-title {
    display: none;
  }

  .toc-wrapper.is-closed .toc-header .toc-toggle {
    padding: 2px 8px;
    height: 100%;
  }
}

/* Print Styles */
@media print {
  .toc-wrapper {
    position: static;
    max-height: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  .toc-toggle {
    display: none;
  }

  .toc-nav {
    max-height: none;
    overflow: visible;
  }
}