/*
 * VibeDocs — Product Hub Styles
 * Scoped under .vbd-product-hub to avoid theme conflicts.
 * Design tokens match the article template (--vbd-* family).
 */

/* ─── Tokens ─── */
.vbd-product-hub {
  --vbd-bg-elev:      #ffffff;
  --vbd-ink:          #1a1a1a;
  --vbd-ink-soft:     #4a4a4a;
  --vbd-ink-muted:    #7a7a7a;
  --vbd-rule:         #e8e3d8;
  --vbd-rule-strong:  #d4cdba;

  background: var(--vbd-bg);
  color: var(--vbd-ink);
  background-image: radial-gradient(circle at 1px 1px, rgba(0,0,0,0.025) 1px, transparent 0);
  background-size: 24px 24px;
  min-height: 60vh;
}

/* ─── Map mockup vars so internal component CSS stays readable ─── */
.vbd-product-hub {
  --bg:          var(--vbd-bg);
  --bg-elev:     var(--vbd-bg-elev);
  --ink:         var(--vbd-ink);
  --ink-soft:    var(--vbd-ink-soft);
  --ink-muted:   var(--vbd-ink-muted);
  --rule:        var(--vbd-rule);
  --rule-strong: var(--vbd-rule-strong);
  --accent:      var(--vbd-accent);
  --accent-soft: var(--vbd-accent-soft);
  --accent-ink:  var(--vbd-accent-ink);
  --sage:        var(--vbd-sage);
  --sage-soft:   var(--vbd-sage-soft);
}

/* ─── Breadcrumbs ─── */
.vbd-product-hub .vbd-crumbs {
  max-width: var(--vibedocs-container-width, 1400px);
  margin: 0 auto;
  padding: 24px 32px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-muted);
  flex-wrap: wrap;
  list-style: none;
}

.vbd-product-hub .vbd-crumbs a {
  color: var(--ink-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.vbd-product-hub .vbd-crumbs a:hover { color: var(--accent); }
.vbd-product-hub .vbd-crumbs .sep { opacity: 0.5; }
.vbd-product-hub .vbd-crumbs .current { color: var(--ink); font-weight: 500; }

/* ─── Shell ─── */
.vbd-product-hub .vbd-shell {
  max-width: var(--vibedocs-container-width, 1400px);
  margin: 0 auto;
  padding: 48px 32px 96px;
}

/* ─── Shared atoms ─── */
.vbd-product-hub .vbd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
  font-weight: 600;
}

.vbd-product-hub .vbd-eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.vbd-product-hub .page-subtitle {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 580px;
  margin: 0;
}

/* ─── Product hero ─── */
.vbd-product-hub .product-hero {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 32px 0 56px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 56px;
}

.vbd-product-hub .product-hero-icon {
  width: 96px; height: 96px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  font-weight: 600;
  flex-shrink: 0;
}

.vbd-product-hub .product-hero-icon--img {
  background: none;
  padding: 0;
  overflow: hidden;
}

.vbd-product-hub .product-hero-icon--letter {
  background: var(--vbd-accent-soft);
  color: var(--vbd-accent);
}

.vbd-product-hub .product-hero-icon--img img {
  width: 96px;
  height: 96px;
  object-fit: contain;
  border-radius: 24px;
  display: block;
}


.vbd-product-hub .product-hero-text h1 {
  font-size: clamp(36px, 4.5vw, 48px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 8px;
  color: var(--ink);
}

.vbd-product-hub .product-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.vbd-product-hub .product-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 5px 10px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 100px;
  color: var(--ink-soft);
  font-weight: 500;
}

.vbd-product-hub .product-tag .vbd-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--sage);
}

/* Status dot color variants */
.vbd-product-hub .product-tag.maintenance .vbd-dot { background: var(--ink-muted); }
.vbd-product-hub .product-tag.deprecated  .vbd-dot { background: var(--accent); }

/* ─── Stats ─── */
.vbd-product-hub .product-hero-stats {
  display: flex;
  gap: 32px;
  align-self: center;
}

.vbd-product-hub .vbd-stat { text-align: right; }

.vbd-product-hub .vbd-stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
}

.vbd-product-hub .vbd-stat-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-muted);
  margin-top: 4px;
  font-weight: 600;
}

/* ─── TOC layout ─── */
.vbd-product-hub .toc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: start;
}

/* ─── TOC sidebar ─── */
.vbd-product-hub .vbd-toc-sidebar {
  position: sticky;
  top: calc(var(--vd-theme-header-height, 0px) + var(--vd-sticky-offset, 24px));
  max-height: calc(100vh - var(--vd-theme-header-height, 0px) - var(--vd-sticky-offset, 24px) - 24px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--rule-strong) transparent;
}

.vbd-product-hub .vbd-toc-sidebar-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-muted);
  margin-bottom: 14px;
  font-weight: 600;
}

.vbd-product-hub .vbd-toc-sidebar ul {
  list-style: none;
  margin: 0; padding: 0;
}

.vbd-product-hub .vbd-toc-sidebar li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--ink-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}

.vbd-product-hub .vbd-toc-sidebar li a:hover {
  color: var(--ink);
  border-left-color: var(--rule-strong);
}

.vbd-product-hub .vbd-toc-sidebar li a.active {
  color: var(--accent);
  font-weight: 500;
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

.vbd-product-hub .vbd-toc-sidebar li a .vbd-count {
  font-size: 11px;
  color: var(--ink-muted);
  opacity: 0.7;
  font-weight: 400;
}

.vbd-product-hub .vbd-toc-sidebar li a.active .vbd-count {
  color: var(--accent);
  opacity: 1;
}

/* ─── Section blocks ─── */
.vbd-product-hub .vbd-section-block {
  margin-bottom: 72px;
  scroll-margin-top: 100px;
}

.vbd-product-hub .vbd-section-block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}

.vbd-product-hub .vbd-section-block-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
  line-height: 1.2;
}

.vbd-product-hub .vbd-section-block-title .vbd-num {
  font-size: 14px;
  color: var(--ink-muted);
  margin-right: 10px;
  vertical-align: middle;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.vbd-product-hub .vbd-section-block-meta {
  font-size: 12px;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  white-space: nowrap;
}

.vbd-product-hub .vbd-section-block-desc {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 20px;
  max-width: 600px;
  line-height: 1.6;
}

/* ─── Article list ─── */
.vbd-product-hub .article-list {
  list-style: none;
  margin: 0; padding: 0;
}

.vbd-product-hub .article-list li {
  border-bottom: 1px solid var(--rule);
}

.vbd-product-hub .article-list li:last-child {
  border-bottom: none;
}

.vbd-product-hub .article-list a {
  display: grid;
  grid-template-columns: 36px 1fr auto auto;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  text-decoration: none;
  color: var(--ink);
  transition: padding-left 0.15s;
}

.vbd-product-hub .article-list a:hover {
  padding-left: 8px;
}

.vbd-product-hub .article-list a:hover .article-title {
  color: var(--accent);
}

.vbd-product-hub .article-num {
  font-size: 12px;
  color: var(--ink-muted);
  font-weight: 500;
}

.vbd-product-hub .article-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  transition: color 0.15s;
  line-height: 1.4;
}

.vbd-product-hub .article-readtime {
  font-size: 11px;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  white-space: nowrap;
}

.vbd-product-hub .article-arrow {
  width: 16px; height: 16px;
  stroke: var(--ink-muted);
  fill: none;
  transition: all 0.15s;
  flex-shrink: 0;
}

.vbd-product-hub .article-list a:hover .article-arrow {
  stroke: var(--accent);
  transform: translateX(4px);
}

/* ─── View all link ─── */
.vbd-product-hub .vbd-view-all {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.15s;
}

.vbd-product-hub .vbd-view-all:hover {
  text-decoration: underline;
  gap: 8px;
}

/* ─── Article badges ─── */
.vbd-product-hub .article-badge {
  display: inline-flex;
  align-items: center;
  margin-left: 8px;
  padding: 2px 7px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 4px;
  font-weight: 600;
  vertical-align: middle;
}

.vbd-product-hub .article-badge.new     { background: var(--accent-soft); color: var(--accent); }
.vbd-product-hub .article-badge.updated { background: var(--sage-soft);   color: var(--sage); }

/* ─── Entrance animations ─── */
@keyframes vbd-hub-fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.vbd-product-hub .vbd-fade-in {
  animation: vbd-hub-fade-up 0.5s ease forwards;
}

/* ─── Responsive: 1100px ─── */
@media (max-width: 1100px) {
  .vbd-product-hub .toc-layout {
    grid-template-columns: 200px 1fr;
    gap: 40px;
  }
}

/* ─── Responsive: 900px ─── */
@media (max-width: 900px) {
  .vbd-product-hub .toc-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .vbd-product-hub .vbd-toc-sidebar {
    position: static;
  }

  .vbd-product-hub .product-hero {
    grid-template-columns: 72px 1fr;
  }

  .vbd-product-hub .product-hero-icon {
    width: 72px; height: 72px;
    font-size: 32px;
    border-radius: 18px;
  }

  .vbd-product-hub .product-hero-icon--img img {
    width: 72px;
    height: 72px;
    border-radius: 18px;
  }

  .vbd-product-hub .product-hero-stats {
    grid-column: 1 / -1;
    margin-top: 20px;
    justify-content: flex-start;
  }

  .vbd-product-hub .vbd-stat { text-align: left; }
}

/* ─── Responsive: 640px ─── */
@media (max-width: 640px) {
  .vbd-product-hub .vbd-shell { padding: 32px 20px 64px; }
  .vbd-product-hub .vbd-crumbs { padding: 16px 20px 0; }

  .vbd-product-hub .product-hero {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .vbd-product-hub .product-hero-icon {
    display: none;
  }

  .vbd-product-hub .product-hero-stats {
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .vbd-product-hub .article-list a {
    grid-template-columns: 28px 1fr auto;
  }

  .vbd-product-hub .article-list a .article-readtime {
    display: none;
  }
}