/* ===================================================
   FindBrief Table of Contents - Frontend Styles
   =================================================== */

:root {
  --dv-toc-border:    #d0d7e0;
  --dv-toc-bg:        #f8f9fb;
  --dv-toc-header-bg: #eef1f6;
  --dv-toc-title:     #1a2332;
  --dv-toc-link:      #2563eb;
  --dv-toc-link-hover:#1d4ed8;
  --dv-toc-active:    #2563eb;
  --dv-toc-active-bg: #eff6ff;
  --dv-toc-radius:    8px;
  --dv-toc-font:      inherit;
}

/* ─── Wrapper ─────────────────────────────────────── */
.dv-toc {
  font-family: var(--dv-toc-font);
  border: 1px solid var(--dv-toc-border);
  border-radius: var(--dv-toc-radius);
  background: var(--dv-toc-bg);
  margin: 1.6em 0 2em;
  max-width: 600px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

/* ─── Header ──────────────────────────────────────── */
.dv-toc__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--dv-toc-header-bg);
  border-bottom: 1px solid var(--dv-toc-border);
  gap: 8px;
}

.dv-toc__title {
  font-weight: 700;
  font-size: .95em;
  color: var(--dv-toc-title);
  letter-spacing: .01em;
}

/* ─── Toggle Button ───────────────────────────────── */
.dv-toc__toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--dv-toc-border);
  border-radius: 4px;
  padding: 3px 9px;
  font-size: .8em;
  color: var(--dv-toc-link);
  cursor: pointer;
  transition: background .15s, color .15s;
  white-space: nowrap;
}

.dv-toc__toggle:hover {
  background: var(--dv-toc-active-bg);
}

.dv-toc__toggle-icon {
  display: inline-block;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform .2s;
  flex-shrink: 0;
}

.dv-toc--collapsed .dv-toc__toggle-icon {
  transform: rotate(-90deg);
}

/* ─── Body / List ─────────────────────────────────── */
.dv-toc__body {
  padding: 10px 16px 14px;
}

.dv-toc__list {
  margin: 0;
  padding-left: 1.4em;
  list-style: decimal;
}

.dv-toc__list ul,
.dv-toc__list ol,
.dv-toc__list--2,
.dv-toc__list--3,
.dv-toc__list--4 {
  margin: 2px 0 2px 0;
  padding-left: 1.2em;
}

/* ul theme */
.dv-toc ul.dv-toc__list { list-style: disc; }
.dv-toc ul .dv-toc__list { list-style: circle; }

.dv-toc__item {
  margin: 3px 0;
  line-height: 1.5;
}

.dv-toc__link {
  color: var(--dv-toc-link);
  text-decoration: none;
  font-size: .88em;
  transition: color .15s;
  border-radius: 3px;
  padding: 1px 3px;
  margin-left: -3px;
}

.dv-toc__link:hover {
  color: var(--dv-toc-link-hover);
  text-decoration: underline;
}

/* ─── Active Link ─────────────────────────────────── */
.dv-toc__link.dv-toc--active {
  color: var(--dv-toc-active);
  background: var(--dv-toc-active-bg);
  font-weight: 600;
  text-decoration: none;
}

/* ─── THEME: Dark ─────────────────────────────────── */
.dv-toc.dv-toc--dark {
  --dv-toc-border:    #374151;
  --dv-toc-bg:        #1f2937;
  --dv-toc-header-bg: #111827;
  --dv-toc-title:     #f9fafb;
  --dv-toc-link:      #60a5fa;
  --dv-toc-link-hover:#93c5fd;
  --dv-toc-active:    #93c5fd;
  --dv-toc-active-bg: #1e3a5f;
}

/* ─── THEME: Minimal ──────────────────────────────── */
.dv-toc.dv-toc--minimal {
  --dv-toc-border:    #e5e7eb;
  --dv-toc-bg:        transparent;
  --dv-toc-header-bg: transparent;
  --dv-toc-title:     #111827;
  --dv-toc-link:      #374151;
  --dv-toc-link-hover:#111827;
  --dv-toc-active:    #111827;
  --dv-toc-active-bg: #f3f4f6;
  box-shadow: none;
}

.dv-toc.dv-toc--minimal .dv-toc__header {
  border-bottom: 2px solid #111827;
}

/* ─── Responsive ──────────────────────────────────── */
@media (max-width: 600px) {
  .dv-toc {
    max-width: 100%;
  }
}


/* ===================================================
   FindBrief TOC - Hover Preview Tooltip
   =================================================== */

.dv-toc-tooltip {
  display: none;
  position: absolute;
  z-index: 99999;
  width: 300px;
  max-width: 92vw;
  background: #ffffff;
  border: 1px solid #d0d7e0;
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,.14), 0 2px 8px rgba(0,0,0,.08);
  padding: 0;
  overflow: hidden;
  pointer-events: auto;

  /* animation */
  opacity: 0;
  transform: translateX(6px);
  transition: opacity .18s ease, transform .18s ease;
}

.dv-toc-tooltip--visible {
  opacity: 1;
  transform: translateX(0);
}

.dv-toc-tooltip--left {
  transform: translateX(-6px);
}
.dv-toc-tooltip--left.dv-toc-tooltip--visible {
  transform: translateX(0);
}

.dv-toc-tooltip--below {
  transform: translateY(8px);
}
.dv-toc-tooltip--below.dv-toc-tooltip--visible {
  transform: translateY(0);
}

.dv-toc-tooltip--above {
  transform: translateY(-8px);
}
.dv-toc-tooltip--above.dv-toc-tooltip--visible {
  transform: translateY(0);
}

/* Arrow */
.dv-toc-tooltip__arrow {
  display: none; /* hidden — clean card style looks better */
}

/* Heading strip */
.dv-toc-tooltip__heading {
  background: linear-gradient(135deg, #1a2332 0%, #2563eb 100%);
  color: #fff;
  font-size: .82em;
  font-weight: 700;
  padding: 9px 14px;
  line-height: 1.4;
  letter-spacing: .01em;
}

/* Content preview */
.dv-toc-tooltip__content {
  padding: 10px 14px 12px;
  font-size: .8em;
  color: #374151;
  line-height: 1.6;
  max-height: 220px;
  overflow-y: auto;
}

.dv-toc-tooltip__content p {
  margin: 0 0 6px;
}

.dv-toc-tooltip__content p:last-child {
  margin-bottom: 0;
}

/* Scrollbar inside tooltip */
.dv-toc-tooltip__content::-webkit-scrollbar { width: 4px; }
.dv-toc-tooltip__content::-webkit-scrollbar-track { background: #f1f5f9; }
.dv-toc-tooltip__content::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }

/* Dark theme tooltip */
.dv-toc--dark ~ .dv-toc-tooltip,
.dv-toc-tooltip.dv-toc-tooltip--dark {
  background: #1f2937;
  border-color: #374151;
}

@media (max-width: 600px) {
  .dv-toc-tooltip {
    width: calc(100vw - 32px);
    max-width: 340px;
  }
}