/* ==========================================
   Knowledge Base — Nordic Geometric
   ========================================== */

/* ===== Hero ===== */
.kb-hero {
  position: relative;
  padding: 3.5rem 2.8rem;
  background:
    radial-gradient(circle at 85% 20%, rgba(92,124,138,0.10) 0%, transparent 50%),
    radial-gradient(circle at 15% 80%, rgba(122,155,138,0.10) 0%, transparent 50%),
    linear-gradient(145deg, #F0F2F4 0%, #E8EBEE 100%);
  border-radius: var(--ng-radius-lg, 10px);
  margin-bottom: 2.5rem;
  overflow: hidden;
  color: var(--ng-text, #2C3A47);
}

/* Geometric grid overlay */
.kb-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(135deg, var(--ng-border, #E5E9ED) 1px, transparent 1px),
    linear-gradient(225deg, var(--ng-border, #E5E9ED) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
  pointer-events: none;
}
/* Decorative elements */
.kb-hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: 40px;
  width: 160px;
  height: 160px;
  border: 1.5px solid var(--ng-border, #E5E9ED);
  border-radius: 50%;
  opacity: 0.4;
  pointer-events: none;
}

.kb-hero-inner {
  position: relative;
  z-index: 1;
}
.kb-hero h1 {
  color: var(--ng-text, #2C3A47);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  letter-spacing: -0.3px;
}
.kb-hero-desc {
  color: var(--ng-text-sub, #6B8299);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 0 1.8rem;
  line-height: 1.7;
}

.kb-hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.kb-hero-stat {
  text-align: center;
  min-width: 70px;
}
.kb-hero-stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--ng-text, #2C3A47);
  line-height: 1.2;
}
.kb-hero-stat-label {
  font-size: 0.75rem;
  color: var(--ng-text-sub, #6B8299);
  margin-top: 0.2rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Section Header ===== */
.kb-section-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 3rem 0 1.5rem;
}
.kb-section-header span {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--ng-text-fade, #9AADBD);
}
.kb-section-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ng-border, #E5E9ED);
}
.kb-section-dot {
  width: 5px !important;
  height: 5px !important;
  border-radius: 50%;
  background: var(--ng-text-fade, #9AADBD);
  flex-shrink: 0;
  font-size: 0 !important;
  letter-spacing: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* ===== Domain Grid ===== */
.kb-domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}
.kb-domain-card {
  background: #fff;
  border: 1px solid var(--ng-border, #E5E9ED);
  border-radius: var(--ng-radius-lg, 10px);
  padding: 1.4rem 1.5rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: all var(--ng-trans, 0.25s cubic-bezier(0.4,0,0.2,1));
}
.kb-domain-card:hover {
  border-color: var(--ng-text-sub, #6B8299);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.kb-domain-icon-wrap {
  width: 46px;
  height: 46px;
  border-radius: var(--ng-radius, 6px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.kb-domain-icon-wrap.purple { background: #EDF2F7; }
.kb-domain-icon-wrap.orange { background: #FDF2EB; }
.kb-domain-icon-wrap.green  { background: #ECF8F0; }
.kb-domain-icon-wrap.blue   { background: #EDF2F7; }
.kb-domain-icon-wrap.violet { background: #F4F0F9; }
.kb-domain-icon-wrap.teal   { background: #EAF8F6; }
.kb-domain-icon-wrap.red    { background: #FDF0ED; }

.kb-domain-body { flex: 1; min-width: 0; }
.kb-domain-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--ng-text, #2C3A47);
}
.kb-domain-desc {
  font-size: 0.8rem;
  color: var(--ng-text-sub, #6B8299);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}
.kb-domain-tag {
  display: inline-block;
  font-size: 0.65rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: var(--ng-surface, #F7F8F9);
  color: var(--ng-text-fade, #9AADBD);
}
.kb-domain-tag.active {
  background: #E3F0E8;
  color: #3D7056;
}

/* ===== Usage Cards ===== */
.kb-usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}
.kb-usage-card {
  background: #fff;
  border: 1px solid var(--ng-border, #E5E9ED);
  border-radius: var(--ng-radius-lg, 10px);
  padding: 1.4rem;
}
.kb-usage-card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}
.kb-usage-card h4 {
  margin: 0 0 0.4rem;
  font-size: 0.93rem;
  font-weight: 700;
  color: var(--ng-text, #2C3A47);
}
.kb-usage-card p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ng-text-sub, #6B8299);
  line-height: 1.6;
}

/* ===== Status ===== */
.kb-status-row {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.kb-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--ng-text-sub, #6B8299);
}
.kb-status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}
.kb-status-dot.effective { background: #6B9080; }
.kb-status-dot.draft     { background: #D4C5B9; }
.kb-status-dot.outdated  { background: #C4908A; }

/* ===== Footer ===== */
.kb-footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--ng-text-sub, #6B8299);
}
.kb-footer p {
  margin: 0.3rem 0;
}
.kb-footer .kb-footer-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--ng-text, #2C3A47);
  margin-bottom: 0.4rem;
}
.kb-footer .kb-footer-sub {
  font-size: 0.78rem;
  color: var(--ng-text-fade, #9AADBD);
}

/* ===============================
   Dark Mode
   =============================== */
[data-md-color-scheme="slate"] .kb-hero {
  background:
    radial-gradient(circle at 85% 20%, rgba(92,124,138,0.08) 0%, transparent 50%),
    radial-gradient(circle at 15% 80%, rgba(122,155,138,0.06) 0%, transparent 50%),
    linear-gradient(145deg, #20242A 0%, #1A1E24 100%);
}
[data-md-color-scheme="slate"] .kb-hero::before {
  background-image:
    linear-gradient(135deg, #2A2E36 1px, transparent 1px),
    linear-gradient(225deg, #2A2E36 1px, transparent 1px);
}
[data-md-color-scheme="slate"] .kb-hero::after { border-color: #2E323A; }

[data-md-color-scheme="slate"] .kb-domain-card,
[data-md-color-scheme="slate"] .kb-usage-card { background: #20242A; border-color: var(--ng-border, #2E323A); }
[data-md-color-scheme="slate"] .kb-domain-card:hover,
[data-md-color-scheme="slate"] .kb-usage-card:hover { background: #252930; border-color: #5E6874; }

[data-md-color-scheme="slate"] .kb-domain-icon-wrap.purple,
[data-md-color-scheme="slate"] .kb-domain-icon-wrap.blue { background: #1E2630; }
[data-md-color-scheme="slate"] .kb-domain-icon-wrap.orange { background: #261E18; }
[data-md-color-scheme="slate"] .kb-domain-icon-wrap.green  { background: #1A241E; }
[data-md-color-scheme="slate"] .kb-domain-icon-wrap.violet { background: #201C26; }
[data-md-color-scheme="slate"] .kb-domain-icon-wrap.teal   { background: #1A2422; }
[data-md-color-scheme="slate"] .kb-domain-icon-wrap.red    { background: #261A18; }

[data-md-color-scheme="slate"] .kb-domain-tag { background: #252930; color: #5E6874; }
[data-md-color-scheme="slate"] .kb-domain-tag.active { background: #1A2A22; color: #6B9080; }

[data-md-color-scheme="slate"] .kb-status-dot.effective { background: #6B9080; }
[data-md-color-scheme="slate"] .kb-status-dot.draft     { background: #8B7D72; }
[data-md-color-scheme="slate"] .kb-status-dot.outdated  { background: #9B6B6B; }

[data-md-color-scheme="slate"] .kb-section-header::after { background: #2E323A; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .kb-hero { padding: 2.5rem 1.5rem; }
  .kb-hero h1 { font-size: 1.5rem; }
  .kb-hero-stats { gap: 1.5rem; }
  .kb-hero-stat-num { font-size: 1.6rem; }
  .kb-domain-grid { grid-template-columns: 1fr; }
  .kb-usage-grid { grid-template-columns: 1fr; }
  .kb-section-header { margin: 2.5rem 0 1rem; }
}