/* ==================== TOC Navigation Styles ==================== */

/* TOC Link Indicator */
.toc-nav .toc-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 85%;
  background-color: rgba(0, 0, 0, 0.15);
  border-radius: 1px;
  transition: background-color 0.25s ease;
}

.toc-nav .is-active-link::before {
  background-color: var(--primary-color, #1C5D33);
}

.toc-nav .toc-link:hover::before {
  background-color: var(--primary-color, #1C5D33);
}

body.darkmode .toc-nav .toc-link::before {
  background-color: rgba(255, 255, 255, 0.15);
}

body.darkmode .toc-nav .is-active-link::before,
body.darkmode .toc-nav .toc-link:hover::before {
  background-color: #54C59F;
}
/* TOC Hover Trigger */
.toc-hover-trigger {
  position: fixed;
  right: 20px;
  top: 74px;
  width: 8px;
  height: 60px;
  z-index: 999;
  cursor: pointer;
  border-radius: 3px;
  background: linear-gradient(to bottom, rgba(28, 93, 51, 0.85), rgba(28, 93, 51, 0.45));
  box-shadow: 0 0 0 1px rgba(28, 93, 51, 0.30), 0 0 6px rgba(28, 93, 51, 0.35);
  opacity: 0.12;
  transition: opacity 0.35s ease;
}

.toc-hover-trigger.hidden {
  opacity: 0 !important;
  pointer-events: none !important;
}

body.darkmode .toc-hover-trigger {
  background: linear-gradient(to bottom, rgba(84, 197, 159, 0.95), rgba(84, 197, 159, 0.52));
  box-shadow: 0 0 0 1px rgba(84, 197, 159, 0.55), 0 0 10px rgba(84, 197, 159, 0.65);
  opacity: 0.12;
}
/* TOC Navigation Container */
.toc-nav {
  position: fixed;
  right: 20px;
  top: 74px;
  width: 240px;
  max-height: calc(100vh - 160px);
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg-color, #FFFFFF);
  border: 1px solid var(--border-color, #e6e6e6);
  border-radius: 10px;
  padding: 36px 8px 14px 14px;
  font-size: 13px;
  line-height: 1.55;
  z-index: 100;
  opacity: 0;
  transform: translateX(8px) translateY(0);
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: opacity 0.35s ease, transform 0.35s ease, box-shadow 0.45s ease;
}

.toc-nav.active {
  opacity: 1;
  transform: translateX(0) translateY(0);
  pointer-events: auto;
}

body.darkmode .toc-nav {
  background: #282828;
  border: 1px solid var(--border-color, #454545);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.40);
}
/* TOC Scrollbar */
.toc-nav::-webkit-scrollbar {
  width: 4px;
}

.toc-nav::-webkit-scrollbar-track {
  background: transparent;
}

.toc-nav::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 2px;
}

.toc-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
}

body.darkmode .toc-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
}

body.darkmode .toc-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}
/* TOC Links */
.toc-nav .toc-link {
  position: relative;
  color: var(--text-color, #262626);
  text-decoration: none;
  display: block;
  padding: 4px 0 4px 10px;
  border-radius: 4px;
  font-weight: 400;
  cursor: pointer;
}

.toc-nav .is-active-link {
  font-weight: 400;
  background: var(--primary-light, rgba(28, 93, 51, 0.12));
  border-radius: 0 4px 4px 0;
}

body.darkmode .toc-nav .is-active-link {
  background: rgba(84, 197, 159, 0.18);
  border-radius: 0 4px 4px 0;
}

/* TOC List */
.toc-nav .toc-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
  padding-top: 4px;
}

.toc-nav .toc-list .toc-list {
  padding-left: 14px;
  font-size: 12px;
  margin-top: 2px;
  padding-top: 0;
}

.toc-nav .toc-list-item {
  margin: 5px 0;
}

.toc-nav .toc-list-item:first-child {
  margin-top: 0;
}

/* TOC Pin Button */
.toc-pin-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-color, #262626);
  opacity: 0.5;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.toc-pin-btn:hover {
  opacity: 0.8;
  background: rgba(0, 0, 0, 0.05);
}

.toc-nav.pinned .toc-pin-btn {
  opacity: 1;
  color: var(--primary-color, #1C5D33);
}

body.darkmode .toc-pin-btn {
  color: var(--text-color, #E7E9EA);
}

body.darkmode .toc-pin-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

body.darkmode .toc-nav.pinned .toc-pin-btn {
  color: #54C59F;
}

.toc-nav.pinned .toc-pin-btn .pin-icon {
  transform: rotate(45deg);
}

.pin-icon {
  transition: transform 0.2s ease;
}