:root {
  color-scheme: dark;
}

body.research-engine {
  background-color: var(--fors33-bg);
  color: var(--fors33-text);
  font-family: var(--fors33-font-sans);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.command-bar {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1.5rem;
  background: var(--fors33-bg);
  border-bottom: 1px solid var(--fors33-border);
  font-family: var(--fors33-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 10;
}

.command-bar .ref-id {
  color: var(--fors33-accent);
}

.command-bar .build-status {
  color: var(--fors33-text-muted);
}

body.fors33-brand main {
  padding-top: 2.25rem;
  padding-bottom: 4rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  z-index: 1;
}

main {
  flex: 1;
}

.hero {
  text-align: center;
}

.hero .subheading {
  margin: 0 auto;
}

.framework,
.research-areas,
.publications,
.collaboration {
  text-align: center;
}

.framework h2,
.research-areas h2,
.publications h2,
.collaboration h2 {
  margin: 0 0 2rem;
  font-family: var(--fors33-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.95rem;
  color: var(--fors33-text-muted);
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 0 auto;
  justify-content: center;
}

.research-areas .areas-grid {
  width: 100%;
  max-width: 1200px;
  align-self: stretch;
}

.research-areas .area-card {
  max-width: none;
}

.areas-grid:has(> :only-child) {
  justify-items: center;
}

.area-card {
  background: var(--fors33-bg);
  border: 1px solid var(--fors33-border);
  border-radius: 2px;
  padding: 2.5rem;
  text-align: center;
  width: 100%;
  max-width: 420px;
  justify-self: center;
}

.area-card p {
  color: var(--fors33-text-muted);
  line-height: 1.7;
  margin: 0 0 1.25rem;
}

.area-icon {
  width: 48px;
  height: 48px;
  background: var(--fors33-bg);
  border: 1px solid var(--fors33-accent-cyan);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  font-size: 1.5rem;
  color: var(--fors33-accent-cyan);
}

.area-link {
  color: var(--fors33-accent-cyan);
  text-decoration: none;
  font-family: var(--fors33-font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
}

.area-link:hover {
  color: var(--fors33-accent-magenta);
}

.publications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 0 auto;
  justify-content: center;
}

.publications-grid:has(> :only-child) {
  justify-items: center;
}

.publication-card {
  background: var(--fors33-bg);
  border: 1px solid var(--fors33-border);
  border-radius: 2px;
  padding: 2.5rem;
  text-align: center;
  width: 100%;
  max-width: 420px;
  justify-self: center;
}

.publication-card p {
  color: var(--fors33-text-muted);
  line-height: 1.7;
  margin: 0 0 1.25rem;
}

.publication-meta {
  font-family: var(--fors33-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--fors33-text-dim);
}

.publication-link {
  color: var(--fors33-accent-cyan);
  text-decoration: none;
  font-family: var(--fors33-font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.publication-link:hover {
  color: var(--fors33-accent-magenta);
}

.partnership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin: 0 auto;
  justify-content: center;
}

.partnership-item {
  background: var(--fors33-bg);
  border: 1px solid var(--fors33-border);
  border-radius: 2px;
  padding: 2.25rem;
  text-align: center;
  width: 100%;
  max-width: 360px;
  justify-self: center;
}

.collaboration-cta {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.primary-cta, .secondary-cta {
  display: inline-block;
  padding: 1rem 2rem;
  text-decoration: none;
  border-radius: 2px;
  font-family: var(--fors33-font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.primary-cta {
  background: var(--fors33-accent-cyan);
  color: var(--fors33-bg);
  border: 1px solid var(--fors33-accent-cyan);
}

.primary-cta:hover {
  background: #00b8e6;
  transform: translateY(-2px);
}

.secondary-cta {
  background: transparent;
  color: var(--fors33-accent-magenta);
  border: 1px solid var(--fors33-accent-magenta);
}

.secondary-cta:hover {
  background: var(--fors33-accent-magenta);
  color: var(--fors33-bg);
  transform: translateY(-2px);
}

.hero .title {
  font-family: var(--fors33-font-mono);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero .status-line {
  margin-top: 0.75rem;
  font-family: var(--fors33-font-mono);
  color: var(--fors33-text-muted);
  letter-spacing: 0.14em;
}
.hero .status-line a {
  color: var(--fors33-accent);
  text-decoration: none;
}
.hero .status-line a:hover {
  text-decoration: underline;
}

.framework-block {
  border: 1px solid var(--fors33-border);
  background: var(--fors33-surface);
  padding: 2rem;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.framework-block h2 {
  font-family: var(--fors33-font-mono);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fors33-text-muted);
}

.framework-block p {
  margin-bottom: 1.2rem;
}

.briefing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 0 auto;
}

.briefing-card {
  position: relative;
  border: 1px solid var(--fors33-border);
  padding: 1.75rem;
  background: var(--fors33-surface);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.briefing-card::before {
  content: attr(data-ref);
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--fors33-font-mono);
  font-size: 0.7rem;
  color: var(--fors33-text-muted);
  letter-spacing: 0.12em;
}

.briefing-card h3 {
  margin: 0 0 0.75rem;
  font-family: var(--fors33-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fors33-text);
}

.briefing-card p {
  margin: 0;
  color: var(--fors33-text-muted);
}

.briefing-card:hover,
.briefing-card:focus-within {
  border-color: var(--fors33-accent);
}

.asset-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin: 0 auto;
}

.asset-row figure {
  margin: 0;
  border: 1px solid var(--fors33-border);
  background: #06060b;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.asset-row figcaption {
  padding: 0.75rem 1rem;
  font-family: var(--fors33-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fors33-text-muted);
  border-top: 1px solid var(--fors33-border);
}

.document-ledger {
  border: 1px solid var(--fors33-border);
  padding: 1.5rem;
  background: var(--fors33-surface);
  position: relative;
}

.document-ledger h3 {
  font-family: var(--fors33-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: var(--fors33-text-muted);
}

.document-ledger ul {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.document-ledger li {
  font-family: var(--fors33-font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--fors33-text);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--fors33-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  transition: background 0.1s ease, padding-left 0.2s ease, color 0.2s ease;
  cursor: pointer;
}

.ledger-meta {
  color: var(--fors33-text-muted);
}

.document-ledger li::before {
  content: '>';
  margin-right: 0.5rem;
  color: transparent;
  transition: color 0.2s ease;
}

.document-ledger li:hover,
.document-ledger li:focus-within {
  background: var(--fors33-bg);
  padding-left: 0.75rem;
  color: var(--fors33-accent);
}

.document-ledger li:hover::before,
.document-ledger li:focus-within::before {
  color: var(--fors33-accent);
}

.document-ledger li:hover .ledger-meta,
.document-ledger li:focus-within .ledger-meta {
  color: var(--fors33-text-muted);
}

footer.status-bar {
  font-family: var(--fors33-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-top: 1px solid var(--fors33-border);
  padding: 0.5rem 1.25rem;
  display: flex;
  justify-content: space-between;
  background: var(--fors33-bg);
}

.scrub-field {
  position: absolute;
  inset: 0;
  display: none; /* Removed scanline noise for Phase 1 */
}

@media (max-width: 768px) {
  body.fors33-brand main {
    padding-top: 2rem;
    padding-bottom: 3rem;
  }

  .asset-row {
    grid-template-columns: 1fr;
  }

  .document-ledger li {
    flex-direction: column;
  }
}