/* SEO Table of Contents - Zero CLS Frontend Styles + Theme Presets */
:root {
  --stoc-bg-color: #f9f9f9;
  --stoc-border-color: #e5e5e5;
  --stoc-border-width: 1px;
  --stoc-border-style: solid;
  --stoc-title-color: #111111;
  --stoc-text-color: #333333;
  --stoc-link-color: #0073aa;
  --stoc-hover-color: #005177;
  --stoc-active-color: #2271b1;
  --stoc-highlight-color: #eef5fa;
  --stoc-font-size: 0.95em;
  --stoc-line-height: 1.5;
  --stoc-title-weight: 700;
}

.stoc-wrapper {
  background-color: var(--stoc-bg-color);
  border: var(--stoc-border-width, 1px) var(--stoc-border-style, solid) var(--stoc-border-color);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 20px 0;
  display: block;
  box-sizing: border-box;
  font-size: var(--stoc-font-size);
  line-height: var(--stoc-line-height);
  max-width: 100%;
  transition: all 0.2s ease;
}

.stoc-wrapper.stoc-align-left { margin-left: 0; margin-right: auto; float: left; }
.stoc-wrapper.stoc-align-right { margin-left: auto; margin-right: 0; float: right; }
.stoc-wrapper.stoc-align-center { margin-left: auto; margin-right: auto; }
.stoc-wrapper.stoc-dark { --stoc-bg-color: #1e1e1e; --stoc-border-color: #333333; --stoc-title-color: #f0f0f0; --stoc-text-color: #cccccc; --stoc-link-color: #66b2ff; --stoc-hover-color: #99ccff; --stoc-active-color: #3399ff; --stoc-highlight-color: #2a3b4d; }
.stoc-wrapper.stoc-light { /* force light */ }

.stoc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.stoc-title {
  font-weight: var(--stoc-title-weight, 700);
  font-size: 1.1em;
  color: var(--stoc-title-color);
  margin: 0;
}

.stoc-read-time {
  font-size: 0.85em;
  color: var(--stoc-text-color);
  opacity: 0.8;
}

.stoc-toggle-btn {
  background: none;
  border: none;
  color: var(--stoc-link-color);
  cursor: pointer;
  font-size: 0.9em;
  padding: 4px 8px;
  text-decoration: underline;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.stoc-toggle-btn:focus-visible {
  outline: 2px solid var(--stoc-active-color);
  outline-offset: 2px;
}

.stoc-body {
  margin-top: 12px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.stoc-collapsed .stoc-body {
  display: none;
}

.stoc-list {
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.stoc-sublist {
  padding-left: 20px;
}

.stoc-item {
  margin: 6px 0;
}

.stoc-link {
  color: var(--stoc-link-color);
  text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease, padding 0.15s ease;
}

.stoc-link:hover {
  color: var(--stoc-hover-color);
  text-decoration: underline;
}

.stoc-link.stoc-active {
  color: var(--stoc-active-color);
  font-weight: 600;
  background-color: var(--stoc-highlight-color);
  padding: 2px 6px;
  border-radius: 3px;
}

.stoc-counter-decimal .stoc-tree {
  counter-reset: stoc-counter;
}

.stoc-counter-decimal .stoc-tree .stoc-item {
  counter-increment: stoc-counter;
}

.stoc-counter-decimal .stoc-tree .stoc-item > .stoc-link::before {
  content: counters(stoc-counter, ".") ". ";
  font-weight: 600;
}

.stoc-counter-roman .stoc-tree { counter-reset: roman-counter; }
.stoc-counter-roman .stoc-item { counter-increment: roman-counter; }
.stoc-counter-roman .stoc-item > .stoc-link::before { content: counter(roman-counter, upper-roman) ". "; }

.stoc-view-more .stoc-item:nth-child(n+6) { display: none; }
.stoc-view-more.stoc-expanded .stoc-item { display: list-item; }
.stoc-view-more-btn { margin-top: 10px; background: var(--stoc-highlight-color); border: 1px solid var(--stoc-border-color); padding: 6px 10px; border-radius: 4px; cursor: pointer; color: var(--stoc-link-color); }
.stoc-view-more-btn:focus-visible { outline: 2px solid var(--stoc-active-color); }

/* ===================== THEME PRESETS ===================== */
/* Each preset is visually distinct — live preview updates instantly */

/* 1. Classic Grey — default card, soft grey */
.stoc-theme-grey {
  background-color: #f9f9f9;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  padding: 16px 20px;
  box-shadow: none;
}

/* 2. Clean Light — bright white card with soft shadow */
.stoc-theme-light {
  background-color: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 20px 24px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
}
.stoc-theme-light .stoc-title {
  font-size: 1.15em;
  letter-spacing: -0.01em;
  border-bottom: 1px solid #f3f4f6;
  padding-bottom: 10px;
  margin-bottom: 2px;
}
.stoc-theme-light .stoc-link:hover {
  background: #f9fafb;
  padding: 2px 6px;
  border-radius: 4px;
  text-decoration: none;
}

/* 3. Dark Mode — charcoal */
.stoc-theme-dark {
  background-color: #1f2937;
  border: 1px solid #374151;
  border-radius: 8px;
  padding: 18px 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.stoc-theme-dark .stoc-title { color: #f9fafb; }
.stoc-theme-dark .stoc-link { color: #60a5fa; }
.stoc-theme-dark .stoc-link:hover { color: #93c5fd; }

/* 4. Transparent — no box, editorial */
.stoc-theme-transparent {
  background: transparent !important;
  background-color: transparent !important;
  border: none !important;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}
.stoc-theme-transparent .stoc-header {
  border-bottom: 2px solid #111827;
  padding-bottom: 8px;
  margin-bottom: 12px;
}
.stoc-theme-transparent .stoc-title {
  font-size: 0.85em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: #111827;
}
.stoc-theme-transparent .stoc-list {
  border-left: 2px solid #e5e7eb;
  padding-left: 16px;
}
.stoc-theme-transparent .stoc-sublist {
  border-left: none;
  padding-left: 16px;
}
.stoc-theme-transparent .stoc-link {
  color: #111827;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.stoc-theme-transparent .stoc-link:hover {
  border-bottom-color: #111827;
  text-decoration: none;
}

/* 5. High Contrast — WCAG AAA, black & yellow */
.stoc-theme-contrast {
  background-color: #ffffff;
  border: 2px solid #000000;
  border-radius: 0;
  padding: 16px 20px;
  box-shadow: none;
}
.stoc-theme-contrast .stoc-title {
  color: #000000;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1em;
  border-bottom: 2px solid #000;
  padding-bottom: 8px;
}
.stoc-theme-contrast .stoc-link {
  color: #0000ee;
  text-decoration: underline;
  font-weight: 600;
}
.stoc-theme-contrast .stoc-link:hover {
  background: #ffff00;
  color: #000;
  text-decoration: none;
  padding: 1px 4px;
}
.stoc-theme-contrast .stoc-link.stoc-active {
  background: #ffff00;
  color: #000;
  border: 1px solid #000;
}
.stoc-theme-contrast .stoc-toggle-btn {
  border: 1px solid #000;
  background: #fff;
  text-decoration: none;
  font-weight: 700;
}

/* 6. Minimal Borderless — subtle left accent */
.stoc-theme-minimal {
  background-color: #ffffff;
  border: none;
  border-left: 4px solid var(--stoc-active-color, #111827);
  border-radius: 0;
  padding: 16px 20px 16px 20px;
  box-shadow: none;
}
.stoc-theme-minimal .stoc-title {
  color: #6b7280;
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}
.stoc-theme-minimal .stoc-link {
  color: #374151;
  font-size: 0.92em;
}
.stoc-theme-minimal .stoc-link:hover {
  color: #111827;
  padding-left: 4px;
}
.stoc-theme-minimal .stoc-list { padding-left: 0; }
.stoc-theme-minimal .stoc-sublist {
  padding-left: 14px;
  border-left: 1px solid #f3f4f6;
}

/* 7. Modern Card — rounded 16px, soft shadow, blue accent */
.stoc-theme-modern {
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -4px rgba(0,0,0,0.05);
}
.stoc-theme-modern .stoc-title {
  color: #0f172a;
  font-size: 1.1em;
  font-weight: 800;
  letter-spacing: -0.015em;
}
.stoc-theme-modern .stoc-header {
  padding-bottom: 12px;
  border-bottom: 1px solid #e2e8f0;
}
.stoc-theme-modern .stoc-link {
  color: #0ea5e9;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 8px;
  display: inline-block;
}
.stoc-theme-modern .stoc-link:hover {
  background: #e0f2fe;
  color: #0284c7;
  text-decoration: none;
}
.stoc-theme-modern .stoc-link.stoc-active {
  background: #0ea5e9;
  color: #fff;
}
.stoc-theme-modern .stoc-item { margin: 4px 0; }

/* 8. Elegant Serif — warm paper, serif typography */
.stoc-theme-elegant {
  background-color: #fdf8f3;
  border: 1px solid #e7d6c3;
  border-radius: 8px;
  padding: 20px 24px;
  box-shadow: 0 2px 8px rgba(120,53,15,0.06);
  font-family: Georgia, 'Times New Roman', serif;
}
.stoc-theme-elegant .stoc-title {
  color: #78350f;
  font-family: Georgia, serif;
  font-style: italic;
  font-weight: 700;
  font-size: 1.2em;
  letter-spacing: 0.01em;
  border-bottom: 1px solid #f5e6d3;
  padding-bottom: 10px;
}
.stoc-theme-elegant .stoc-link {
  color: #b45309;
  font-family: Georgia, serif;
  border-bottom: 1px dotted #e7d6c3;
  text-decoration: none;
}
.stoc-theme-elegant .stoc-link:hover {
  color: #92400e;
  background: #fef3c7;
  border-bottom-style: solid;
  text-decoration: none;
}
.stoc-theme-elegant .stoc-item { margin: 7px 0; }
.stoc-theme-elegant .stoc-counter-decimal .stoc-item > .stoc-link::before {
  color: #a16207;
  font-style: italic;
}

/* 9. Compact Sidebar — dense, small for sticky sidebars */
.stoc-theme-compact {
  background-color: #fafafa;
  border: 1px solid #e5e7eb;
  border-radius: 4px;
  padding: 12px 14px;
  font-size: 0.85em;
  line-height: 1.4;
}
.stoc-theme-compact .stoc-title {
  font-size: 0.9em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #1f2937;
  margin-bottom: 8px;
}
.stoc-theme-compact .stoc-header { gap: 8px; }
.stoc-theme-compact .stoc-body { margin-top: 8px; }
.stoc-theme-compact .stoc-item { margin: 3px 0; }
.stoc-theme-compact .stoc-link { font-size: 0.95em; }
.stoc-theme-compact .stoc-sublist { padding-left: 12px; }
.stoc-theme-compact .stoc-toggle-btn { font-size: 0.8em; padding: 2px 6px; }

/* 10. Custom — no preset CSS, fully controlled by inline CSS variables */
.stoc-theme-custom {
  /* custom colors via --stoc-* variables from settings; keep minimal structural defaults */
  border-radius: 6px;
}

/* Sticky / Sidebar */
.stoc-sticky { position: sticky; top: 20px; z-index: 10; }
/* When an affix container is set (scrollable box), confine sticky to its bounds. */
.stoc-sticky.stoc-affix-bound {
  position: sticky;
  top: 0;
  max-height: 100%;
  overflow-y: auto;
}
@media (max-width: 768px) {
  .stoc-sticky.stoc-mobile-hide { display: none; }
  .stoc-sticky.stoc-mobile-collapsible_button .stoc-body { display: none; }
  .stoc-sticky.stoc-mobile-collapsible_button.stoc-expanded-mobile .stoc-body { display: block; }
}

/* RTL mirroring */
body.rtl .stoc-sublist { padding-left: 0; padding-right: 20px; }
body.rtl .stoc-wrapper.stoc-align-left { float: right; }
body.rtl .stoc-wrapper.stoc-align-right { float: left; }
body.rtl .stoc-theme-minimal { border-left: none; border-right: 4px solid var(--stoc-active-color, #111827); }
body.rtl .stoc-theme-transparent .stoc-list { border-left: none; border-right: 2px solid #e5e7eb; padding-left: 0; padding-right: 16px; }

@media (prefers-color-scheme: dark) {
  .stoc-wrapper:not(.stoc-light):not(.stoc-theme-light):not(.stoc-theme-contrast):not(.stoc-theme-minimal):not(.stoc-theme-transparent) {
    --stoc-bg-color: #1e1e1e;
    --stoc-border-color: #333333;
    --stoc-title-color: #f0f0f0;
    --stoc-text-color: #cccccc;
    --stoc-link-color: #66b2ff;
    --stoc-hover-color: #99ccff;
    --stoc-active-color: #3399ff;
    --stoc-highlight-color: #2a3b4d;
  }
  .stoc-theme-transparent:not(.stoc-light) .stoc-title { color: #f0f0f0; }
  .stoc-theme-transparent:not(.stoc-light) .stoc-link { color: #e5e7eb; }
}