/* Knowledge shell: load after main.css and components.css. */

/* Reading templates: one main article and a secondary desktop directory. */
.knowledge-reading-page { align-items: start; gap: 32px; }
.knowledge-reading-content { min-width: 0; }
.knowledge-reading-page .detail-section { scroll-margin-top: 90px; }
.knowledge-section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.knowledge-kicker { color: var(--primary-700); font-size: 12px; margin-bottom: 8px; }
.knowledge-fact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 20px; }
.knowledge-fact-card { padding: 14px 16px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 6px; }
.knowledge-fact-card dt { color: var(--text-tertiary); font-size: 13px; margin-bottom: 6px; }
.knowledge-fact-card dd { margin: 0; color: var(--text-primary); line-height: 1.75; }
.knowledge-mobile-directory { display: none; }
.knowledge-desktop-directory { display: block; max-height: calc(100vh - 110px); overflow-y: auto; position: sticky; top: 90px; }
.knowledge-disclosure { overflow: hidden; border: 1px solid var(--border-color); border-radius: 6px; background: var(--bg-card); }
.knowledge-disclosure > summary { cursor: pointer; padding: 14px 16px; color: var(--text-primary); font-weight: 600; transition: background-color 160ms ease; }
.knowledge-disclosure > summary:hover { background: var(--bg-card-hover); }
.knowledge-disclosure[open] > summary { border-bottom: 1px solid var(--border-color); }
.knowledge-disclosure .standard-section-body { display: block; padding: 18px; line-height: 1.8; }
.knowledge-disclosure > .structured-intro, .knowledge-disclosure > .structured-card-grid { margin: 16px; }
.source-boundary-section { background: var(--bg-secondary); border: 1px solid var(--border-color); padding: 22px; border-radius: 6px; }
.knowledge-anchor { display: block; scroll-margin-top: 90px; }
.knowledge-mobile-directory summary { cursor: pointer; padding: 12px 16px; color: var(--primary-700); font-weight: 600; }
.knowledge-mobile-directory-body { padding: 0 16px 16px; }
@media (max-width: 960px) {
  .knowledge-mobile-directory { display: block; margin: 18px 0; border: 1px solid var(--border-color); border-radius: 6px; background: var(--bg-card); }
  .knowledge-desktop-directory { display: none; }
  .knowledge-reading-page { display: block; }
}
@media (max-width: 600px) {
  .knowledge-fact-grid { grid-template-columns: 1fr; }
  .knowledge-section-heading { align-items: flex-start; flex-wrap: wrap; }
}
@media print {
  .knowledge-desktop-directory, .knowledge-mobile-directory { display: none !important; }
  .knowledge-disclosure .standard-section-body { display: block !important; }
}


.kb-home,
.kb-topics,
.kb-entry,
.kb-section,
.kb-search {
  min-width: 0;
}

.kb-home {
  padding: 34px 0 56px;
}

.kb-home > .container,
.kb-topics > .container {
  max-width: 1040px;
}

.kb-home-intro,
.kb-topics-header {
  padding: 34px 0 30px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.kb-home-intro .container,
.kb-topics-header .container {
  max-width: 1040px;
}

.kb-home-kicker,
.kb-section-label {
  margin: 0 0 5px;
  color: var(--primary-700);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.kb-home h1,
.kb-topics h1 {
  max-width: 760px;
  margin: 0 0 10px;
  color: var(--text-primary);
  font-size: clamp(30px, 4.2vw, 44px);
  line-height: 1.18;
  letter-spacing: -.035em;
}

.kb-home > p,
.kb-topics > p,
.kb-home .lead,
.kb-topics .lead {
  max-width: 760px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

.kb-search {
  position: relative;
  max-width: 720px;
  margin: 22px 0 28px;
}

.kb-search input,
.kb-search select {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.kb-search input:focus,
.kb-search select:focus {
  border-color: var(--primary-500);
  outline: 0;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-500) 18%, transparent);
}

.kb-section {
  margin-top: 30px;
  padding-top: 0;
  scroll-margin-top: 82px;
}

.kb-section + .kb-section {
  padding-top: 26px;
  border-top: 1px solid var(--border-color);
}

.kb-section > header,
.kb-section .section-heading-row,
.kb-section .kb-section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 13px;
}

.kb-section .kb-section-heading > div { min-width: 0; }
.kb-section .kb-section-heading p:last-child {
  margin: 4px 0 0;
  color: var(--text-tertiary);
  font-size: 13px;
}

.kb-section h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -.02em;
}

.kb-section header p,
.kb-section .section-heading-row p {
  margin: 0;
  color: var(--text-tertiary);
  font-size: 13px;
}

.kb-entry {
  display: block;
  padding: 17px 18px;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.kb-entry:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  border-color: var(--primary-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.kb-entry h2,
.kb-entry h3,
.kb-entry strong {
  color: var(--text-primary);
}

.kb-entry h2,
.kb-entry h3 {
  margin: 0 0 5px;
  font-size: 17px;
  line-height: 1.4;
}

.kb-entry p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.65;
}

.kb-entry small,
.kb-entry .meta {
  display: block;
  margin-top: 9px;
  color: var(--text-tertiary);
  font-size: 12px;
}

.kb-home :is(.entry-grid, .kb-entry-grid),
.kb-topics :is(.topic-grid, .kb-topic-grid, .kb-entry-grid),
.kb-article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.kb-entry-grid { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
.kb-entry-index {
  display: block;
  margin-bottom: 14px;
  color: var(--primary-600);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}
.kb-entry > strong {
  display: block;
  margin-top: 14px;
  color: var(--primary-700);
  font-size: 12px;
}

.kb-category-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.kb-category-group {
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}
.kb-category-group h3 { margin: 0 0 10px; font-size: 15px; }
.kb-category-links { display: flex; flex-wrap: wrap; gap: 7px; }
.kb-category-links a,
.kb-topic-filters button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 6px 10px;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.kb-category-links a:hover,
.kb-topic-filters button:hover,
.kb-topic-filters button.active {
  color: var(--primary-800);
  background: var(--primary-50);
  border-color: var(--primary-200);
}
.kb-category-links span { color: var(--text-tertiary); font-size: 11px; }

.kb-article-card {
  display: block;
  padding: 15px 17px;
  color: var(--text-primary);
  background: transparent;
  border-bottom: 1px solid var(--border-color);
}
.kb-article-card:hover { background: var(--bg-card-hover); }
.kb-article-card > span { color: var(--primary-700); font-size: 11px; font-weight: 700; }
.kb-article-card h3 { margin: 3px 0; color: var(--text-primary); font-size: 16px; }
.kb-article-card p { margin: 0; color: var(--text-secondary); font-size: 13px; line-height: 1.6; }

.kb-topic-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 22px 0;
}
.kb-topic-groups { display: grid; gap: 6px; }

.kb-topics {
  padding: 30px 0 56px;
}

.kb-topics ul,
.kb-section ul,
.kb-section ol {
  padding-left: 20px;
}

.kb-topics li,
.kb-section li {
  margin-block: 4px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.kb-topics table,
.kb-section table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  font-size: 13.5px;
}

.kb-topics th,
.kb-topics td,
.kb-section th,
.kb-section td {
  padding: 9px 11px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
  line-height: 1.55;
}

.kb-topics th,
.kb-section th {
  color: var(--text-primary);
  background: var(--bg-tertiary);
  font-weight: 700;
}

.kb-topics tr:last-child td,
.kb-section tr:last-child td {
  border-bottom: 0;
}

/* New four-category shell and global search hooks. */
.navbar-inner { justify-content: flex-start; gap: 8px; }
.navbar-links { margin-left: auto; }
.navbar-links [data-primary-nav] {
  flex: 0 0 auto;
}

#globalSearchToggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  padding: 8px 11px;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font: inherit;
  cursor: pointer;
}

#globalSearchDialog {
  position: fixed;
  inset: 0;
  z-index: 2100;
  display: grid;
  place-items: start center;
  padding: min(14vh, 110px) 18px 24px;
  color: var(--text-primary);
}
#globalSearchDialog[hidden] { display: none; }
.kb-search-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: rgba(25, 31, 35, .42);
}
.kb-search-panel {
  position: relative;
  z-index: 1;
  width: min(680px, 100%);
  padding: 20px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}
.kb-search-panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.kb-search-panel-heading h2 { margin: 0; font-size: 20px; }
.kb-search-panel .kb-search { margin: 18px 0 0; }

#globalSearchInput {
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

@media (max-width: 1180px) {
  .kb-shell-search {
    flex: 0 0 38px;
    width: 38px;
    min-width: 38px;
    min-height: 38px;
    height: 38px;
    margin-left: auto;
    padding: 0;
    font-size: 0;
  }
  .kb-shell-search::before {
    content: '';
    width: 13px;
    height: 13px;
    border: 2px solid currentColor;
    border-radius: 50%;
  }
  .kb-shell-search::after {
    content: '';
    width: 7px;
    height: 2px;
    margin-left: -5px;
    margin-bottom: -12px;
    border-radius: 2px;
    background: currentColor;
    transform: rotate(45deg);
  }
}

@media (max-width: 720px) {
  .kb-home,
  .kb-topics {
    padding: 24px 0 42px;
  }

  .kb-home :is(.entry-grid, .kb-entry-grid),
  .kb-topics :is(.topic-grid, .kb-topic-grid, .kb-entry-grid),
  .kb-article-grid,
  .kb-category-columns {
    grid-template-columns: 1fr !important;
  }

  .kb-section > header,
  .kb-section .section-heading-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .kb-entry {
    padding: 15px 16px;
  }

  .navbar-links #globalSearchToggle {
    width: auto;
    align-self: flex-start;
    margin-top: 6px;
  }
}

@media print {
  .kb-search,
  #globalSearchToggle,
  #globalSearchDialog {
    display: none !important;
  }

  .kb-home,
  .kb-topics,
  .kb-section {
    padding: 0;
    margin: 0 0 14pt;
  }

  .kb-entry {
    break-inside: avoid;
    box-shadow: none;
    border-color: #bbb;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kb-entry,
  .kb-search input,
  .kb-search select {
    transition: none;
  }
}