/* 1. CSS Variables & Reset */
:root {
  --toc-primary: #4f46e5;
  --toc-primary-hover: #4338ca;
  --toc-primary-light: #eef2ff;
  --toc-text-main: #1e293b;
  --toc-text-muted: #64748b;
  --toc-bg-page: #f8fafc;
  --toc-bg-card: #ffffff;
  --toc-border: #e2e8f0;
  --toc-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --toc-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Scoped Reset for TOC elements */
.toc-sidebar *,
.mobile-toc-container * {
  box-sizing: border-box;
}

/* 3. Desktop TOC Sidebar */
.toc-sidebar {
  flex-shrink: 0;
  display: none;
  /* Hidden on mobile */
}

@media (min-width: 1024px) {
  .toc-sidebar {
    display: block;
  }
}

.toc-sidebar .sticky-wrapper {
  background: var(--toc-bg-card);
  border: 1px solid var(--toc-border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.toc-sidebar .toc-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  color: var(--toc-text-main);
}

.toc-sidebar .toc-nav {
  border-left: 2px solid var(--toc-border);
}

.toc-sidebar .toc-link {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: var(--toc-text-muted);
  cursor: pointer;
  transition: var(--toc-transition);
  white-space: normal;
  overflow-wrap: break-word;
  line-height: 1.4;
}

.toc-sidebar .toc-link:hover {
  color: var(--toc-text-main);
  border-left-color: var(--toc-text-muted);
}

.toc-sidebar .toc-link.active {
  color: var(--toc-primary);
  border-left-color: var(--toc-primary);
  font-weight: 600;
}

.toc-sidebar .toc-link.level-h3 {
  padding-left: 2rem;
  font-size: 0.8rem;
}

/* 5. Mobile Floating TOC */
.mobile-toc-container {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  /* Increased z-index for WP */
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.mobile-toc-container.hidden {
  transform: translate(-50%, 5rem);
  opacity: 0;
  pointer-events: none;
}

@media (min-width: 1024px) {
  .mobile-toc-container {
    display: none;
  }
}

.mobile-toc-container .floating-btn {
  background-color: var(--toc-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  border: none;
  font-weight: 600;
  box-shadow: var(--toc-shadow);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  white-space: nowrap;
}

.mobile-toc-container .mobile-menu {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  background: var(--toc-bg-card);
  width: 90vw;
  max-width: 400px;
  max-height: 60vh;
  border-radius: 1rem;
  border: 1px solid var(--toc-border);
  box-shadow: var(--toc-shadow);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.mobile-toc-container .mobile-menu.open {
  display: flex;
}

.mobile-toc-container .mobile-header {
  padding: 1rem;
  border-bottom: 1px solid var(--toc-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--toc-bg-page);
}

.mobile-toc-container .mobile-list {
  padding: 1rem;
  overflow-y: auto;
}

.mobile-toc-container .mobile-link {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.75rem;
  border: none;
  background: none;
  border-radius: 0.5rem;
  color: var(--toc-text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  margin-bottom: 0.25rem;
  white-space: normal;
  overflow-wrap: break-word;
  line-height: 1.4;
}

.mobile-toc-container .mobile-link.active {
  background-color: var(--toc-primary-light);
  color: var(--toc-primary);
  font-weight: 600;
}

.mobile-toc-container .mobile-link.level-h3 {
  padding-left: 1.5rem;
  opacity: 0.8;
}

/* Utility Classes */
.icon-sm {
  width: 16px;
  height: 16px;
}

/* Loading Indicator */
.toc-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  gap: 0.75rem;
}

.toc-nav.loading .toc-loader,
.mobile-list.loading .toc-loader {
  display: flex;
}

.toc-nav:not(.loading) .toc-loader,
.mobile-list:not(.loading) .toc-loader {
  display: none;
}

.toc-spinner {
  width: 40px;
  height: 40px;
  animation: toc-rotate 2s linear infinite;
}

.toc-spinner-path {
  stroke: var(--toc-primary);
  stroke-linecap: round;
  animation: toc-dash 1.5s ease-in-out infinite;
}

.toc-loader span {
  font-size: 0.875rem;
  color: var(--toc-text-muted);
}

@keyframes toc-rotate {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes toc-dash {
  0% {
    stroke-dasharray: 1, 150;
    stroke-dashoffset: 0;
  }

  50% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -35;
  }

  100% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -124;
  }
}
/* Mobile Close Button */
.mobile-close-btn {
  background: var(--toc-bg-page);
  border: 1px solid var(--toc-border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--toc-text-muted);
  transition: var(--toc-transition);
  padding: 0;
}

.mobile-close-btn:hover {
  background: var(--toc-border);
  color: var(--toc-text-main);
}

.mobile-close-btn:active {
  transform: scale(0.95);
}