/* NFB Concepts v1.0 — Knowledge Center module
   Spec: docs/NFB_CONCEPTS_V1.md
   Colors: concepts blue · identity green · organization orange · content purple */

:root {
  --nfb-c-concepts: #0369a1;
  --nfb-c-identity: #0f766e;
  --nfb-c-org: #c2410c;
  --nfb-c-content: #6d28d9;
  --nfb-c-local: #0d9488;
  --nfb-c-ink: #1c1917;
  --nfb-c-muted: #57534e;
  --nfb-c-line: #d6d3d1;
  --nfb-c-paper: #fafaf9;
}

.nfb-concept-page {
  max-width: 42rem;
}

.nfb-concept-lead {
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--nfb-c-muted);
  margin: 0 0 1.25rem;
}

.nfb-concept-status {
  border: 1px solid var(--nfb-c-line);
  border-left: 4px solid var(--nfb-c-concepts);
  background: var(--nfb-c-paper);
  padding: 0.85rem 1rem;
  margin: 0 0 1.5rem;
}

.nfb-concept-status__badge {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--nfb-c-concepts);
  margin-bottom: 0.35rem;
}

.nfb-concept-status__badge::before {
  content: "✓ ";
}

.nfb-concept-status--superseded,
.nfb-concept-status--deprecated {
  border-left-color: #a8a29e;
}

.nfb-concept-status--superseded .nfb-concept-status__badge,
.nfb-concept-status--deprecated .nfb-concept-status__badge {
  color: #78716c;
}

.nfb-concept-status--superseded .nfb-concept-status__badge::before,
.nfb-concept-status--deprecated .nfb-concept-status__badge::before {
  content: "";
}

.nfb-concept-status__text--secondary {
  margin-top: -0.25rem;
  color: var(--nfb-c-muted);
  font-size: 0.9rem;
}

.nfb-concept-status__text {
  margin: 0 0 0.5rem;
  color: var(--nfb-c-ink);
  font-size: 0.95rem;
}

.nfb-concept-status__meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.8125rem;
  color: var(--nfb-c-muted);
}

.nfb-concept-page h2.section-title {
  margin-top: 1.75rem;
  font-size: 1.15rem;
  color: var(--nfb-c-ink);
}

.nfb-concept-page h3 {
  margin-top: 1.25rem;
  font-size: 1rem;
  color: var(--nfb-c-concepts);
  font-weight: 600;
}

.nfb-concept-law {
  border-left: 3px solid var(--nfb-c-identity);
  padding: 0.65rem 0.9rem;
  margin: 1rem 0 1.5rem;
  background: rgba(15, 118, 110, 0.06);
  font-style: italic;
  color: var(--nfb-c-ink);
}

.nfb-concept-link-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

.nfb-concept-link-list a {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--nfb-c-line);
  border-radius: 4px;
  text-decoration: none;
  color: var(--nfb-c-concepts);
  font-size: 0.9rem;
  background: #fff;
}

.nfb-concept-link-list a:hover {
  border-color: var(--nfb-c-concepts);
  background: rgba(3, 105, 161, 0.06);
}

.nfb-concept-see-also {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--nfb-c-line);
}

.nfb-concept-position {
  margin: 1.5rem 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--nfb-c-line);
  background: var(--nfb-c-paper);
}

.nfb-concept-position__list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.nfb-concept-position__list li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  font-size: 0.95rem;
}

.nfb-concept-position__sep {
  color: var(--nfb-c-muted);
  margin: 0.1rem 0 0.1rem 0.35rem;
  font-size: 0.8rem;
}

.nfb-concept-use-cases__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.55rem;
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.nfb-concept-use-cases__list li {
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--nfb-c-line);
  border-radius: 4px;
  font-size: 0.875rem;
  color: var(--nfb-c-ink);
  background: #fff;
}

.nfb-concept-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}

.nfb-concept-compare__col {
  border: 1px solid var(--nfb-c-line);
  background: var(--nfb-c-paper);
  padding: 0.85rem 1rem;
}

.nfb-concept-compare__title {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  color: var(--nfb-c-concepts);
}

.nfb-concept-compare__col ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--nfb-c-ink);
}

.nfb-concept-compare__col li {
  margin-bottom: 0.35rem;
}

@media (max-width: 640px) {
  .nfb-concept-compare {
    grid-template-columns: 1fr;
  }
}

/* Knowledge context — “Where am I?” at top of Knowledge pages */
.nfb-knowledge-context {
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--nfb-c-line);
}

.nfb-knowledge-context__modules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.15rem;
  align-items: center;
  font-size: 0.8rem;
}

@media (max-width: 480px) {
  .nfb-knowledge-context__modules {
    font-size: 0.875rem;
    gap: 0.45rem 0.2rem;
  }
}

.nfb-knowledge-context__modules li {
  display: flex;
  align-items: center;
}

.nfb-knowledge-context__modules li:not(:last-child)::after {
  content: "·";
  margin: 0 0.45rem;
  color: var(--nfb-c-muted);
}

.nfb-knowledge-context__modules a {
  color: var(--nfb-c-concepts);
  text-decoration: none;
}

.nfb-knowledge-context__modules a:hover {
  text-decoration: underline;
}

.nfb-knowledge-context__current {
  font-weight: 700;
  color: var(--nfb-c-ink);
}

.nfb-concept-part-of--top {
  margin: 0 0 1.25rem;
  padding: 0.65rem 0.85rem;
  background: var(--nfb-c-paper);
  border: 1px solid var(--nfb-c-line);
  border-radius: 4px;
}

.nfb-concept-part-of__heading {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--nfb-c-muted);
  margin: 0 0 0.35rem;
}

.nfb-concept-part-of__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.15rem;
  font-size: 0.9rem;
}

.nfb-concept-part-of__list li {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nfb-concept-part-of__list li:not(:last-child)::after {
  content: "›";
  margin: 0 0.35rem 0 0.15rem;
  color: var(--nfb-c-muted);
  font-size: 0.85rem;
}

.nfb-concept-part-of__list a {
  color: var(--nfb-c-concepts);
  text-decoration: none;
}

.nfb-concept-part-of__list a:hover {
  text-decoration: underline;
}

.nfb-concept-part-of__sep {
  color: var(--nfb-c-muted);
  font-size: 0.85rem;
}

.nfb-concept-diagram {
  margin: 1.75rem 0;
}

.nfb-concept-diagram__frame {
  border: 1px solid var(--nfb-c-line);
  background: #fff;
  padding: 0.75rem;
  overflow-x: auto;
}

.nfb-concept-svg {
  width: 100%;
  max-width: 640px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.nfb-concept-svg-edge {
  stroke: #a8a29e;
  stroke-width: 1.5;
}

.nfb-concept-svg-caption {
  fill: #78716c;
  font-size: 11px;
  font-family: Georgia, "Times New Roman", serif;
}

.nfb-concept-svg-node {
  cursor: pointer;
}

.nfb-concept-svg-node:hover rect {
  filter: brightness(1.08);
}

.nfb-concept-svg-node:focus {
  outline: none;
}

.nfb-concept-svg-node:focus rect {
  stroke: #1c1917;
  stroke-width: 2;
}

/* Knowledge Center / index hubs */
.nfb-kc-modules {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  gap: 0.75rem;
}

.nfb-kc-modules a {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--nfb-c-line);
  border-radius: 4px;
  text-decoration: none;
  color: var(--nfb-c-ink);
  background: var(--nfb-c-paper);
}

.nfb-kc-modules a:hover {
  border-color: var(--nfb-c-concepts);
}

.nfb-kc-modules strong {
  display: block;
  color: var(--nfb-c-concepts);
  margin-bottom: 0.2rem;
}

.nfb-kc-modules span {
  font-size: 0.9rem;
  color: var(--nfb-c-muted);
}

.nfb-kc-modules .is-soon {
  opacity: 0.65;
  pointer-events: none;
}

.nfb-concepts-tree {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  font-size: 0.95rem;
}

.nfb-concepts-tree ul,
.nfb-concepts-tree ol {
  list-style: none;
  padding-left: 1.25rem;
  margin: 0.35rem 0;
  border-left: 2px solid var(--nfb-c-line);
}

.nfb-concepts-tree a {
  color: var(--nfb-c-concepts);
  text-decoration: none;
}

.nfb-concepts-tree a:hover {
  text-decoration: underline;
}

.nfb-concepts-tree .is-planned {
  color: var(--nfb-c-muted);
}

@media (max-width: 640px) {
  .nfb-concept-diagram__frame {
    padding: 0.5rem;
  }
}

/* ——— The NoFakeBiz Model (reference document) ——— */

.nfb-model-doc {
  max-width: 52rem;
  min-width: 0;
}

.nfb-ref-badge {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--nfb-c-ink);
  border: 1px solid var(--nfb-c-ink);
  background: transparent;
}

.nfb-model-doc__audience {
  font-size: 0.9rem;
  color: var(--nfb-c-muted);
  margin: 0 0 1.5rem;
}

.nfb-model-doc__how {
  margin-bottom: 1.5rem;
}

.nfb-model-doc__frame {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-gutter: stable;
}

.nfb-model-svg {
  max-width: none;
  width: 1680px;
  min-width: 100%;
  display: block;
}

@media (max-width: 900px) {
  /* On small screens the SVG scrolls; ontology outline below remains primary for reading */
  .nfb-model-doc__frame {
    border: 1px solid var(--nfb-c-line);
    border-radius: 4px;
  }
}

.nfb-model-doc__outline-note,
.nfb-model-doc__laws-note {
  font-size: 0.9rem;
  color: var(--nfb-c-muted);
  margin: 0 0 0.75rem;
}

.nfb-model-laws {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  border-left: 3px solid var(--nfb-c-identity);
  background: rgba(15, 118, 110, 0.05);
}

.nfb-model-laws li {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--nfb-c-line);
  color: var(--nfb-c-ink);
  font-style: italic;
}

.nfb-model-laws li:last-child {
  border-bottom: none;
}

.nfb-model-doc__footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--nfb-c-line);
  font-size: 0.8125rem;
  color: var(--nfb-c-muted);
}

.nfb-model-doc__footer p {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.nfb-model-doc__footer strong {
  color: var(--nfb-c-ink);
  font-weight: 600;
}

/* ——— Foundation (institutional identity) ——— */

.nfb-foundation-definition {
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--nfb-c-ink);
  font-weight: 500;
}

.nfb-foundation-questions {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  border-left: 3px solid var(--nfb-c-concepts);
  background: var(--nfb-c-paper);
}

.nfb-foundation-questions li {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--nfb-c-line);
  color: var(--nfb-c-muted);
  font-size: 0.95rem;
}

.nfb-foundation-questions li:last-child {
  border-bottom: none;
}

.nfb-foundation-questions strong {
  color: var(--nfb-c-ink);
  display: block;
  margin-bottom: 0.15rem;
}