/* Lumenhaus Architectural Sections — Strategic Systems & Applied Research
   Unified Dark Palette (Void, Obsidian, Raw Brass, Emerald)
*/

.page-header {
  padding: 120px 0 80px;
  background: var(--void);
  color: var(--text-primary);
  border-bottom: 1px solid var(--panel-border);
  position: relative;
  overflow: hidden;
}

.page-header-lead {
  max-width: 820px;
}

.page-header-title {
  font-family: var(--font-sans);
  font-size: clamp(42px, 4.8vw, 68px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 16px 0 20px;
  color: var(--text-primary);
}

.page-header-title em {
  font-family: inherit;
  font-style: normal;
  font-weight: inherit;
  color: inherit;
}

.page-header-desc {
  font-size: 18px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0;
}

/* DEEP VECTOR SPECIFICATION (SERVICES) */
.vector-detail-block {
  padding: 120px 0;
  border-bottom: 1px solid var(--panel-border);
  background: var(--void);
  position: relative;
}

.vector-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: flex-start;
}

.vector-detail-intro .vector-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  font-weight: 600;
  display: block;
  margin-bottom: 16px;
}

.vector-detail-intro h2 {
  font-family: var(--font-sans);
  font-size: clamp(32px, 3.2vw, 44px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin: 0 0 20px;
  color: var(--text-primary);
}

.vector-detail-intro p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.vector-spec-panel {
  background: var(--panel-solid);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 38px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.vector-spec-panel h3 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass-bright);
  margin: 0 0 18px;
}

.vector-spec-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}

.vector-spec-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--panel-border-subtle);
  font-size: 14.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.vector-spec-list li::before {
  content: '↗';
  color: var(--brass);
  font-family: var(--font-mono);
  font-weight: 700;
}

.vector-deliverables {
  background: rgba(200, 158, 90, 0.08);
  border: 1px solid rgba(200, 158, 90, 0.25);
  border-radius: 4px;
  padding: 20px 24px;
}

.vector-deliverables strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 6px;
}

.vector-deliverables p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* APPLIED THESES & FIELD ENGINEERING (WORK) */
.thesis-deep-card {
  padding: 120px 0;
  border-bottom: 1px solid var(--panel-border);
  background: var(--void);
  position: relative;
}

.thesis-deep-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: flex-start;
}

.thesis-meta-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.thesis-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  font-weight: 600;
}

.thesis-deep-card h2 {
  font-family: var(--font-sans);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.2;
  margin: 0 0 20px;
  color: var(--text-primary);
}

.thesis-deep-card p {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.thesis-architecture-box {
  background: var(--panel-solid);
  color: var(--text-primary);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 32px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.thesis-architecture-box h3,
.thesis-architecture-box h4 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass-bright);
  margin: 0 0 16px;
}

.thesis-flow {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.thesis-flow-step {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.thesis-flow-step strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 2px;
}

.thesis-impact-metric {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--panel-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.thesis-impact-label {
  color: var(--text-faint);
}

.thesis-impact-val {
  color: var(--brass-bright);
  font-weight: 600;
}

/* ENGAGEMENT MATRIX / TIERS */
.engagement-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.matrix-tier {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 38px 32px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(16px);
  transition: all 0.3s var(--ease-out);
}

.matrix-tier:hover {
  transform: translateY(-4px);
  border-color: var(--panel-border-bright);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.7);
}

.matrix-tier.featured {
  background: linear-gradient(145deg, rgba(22, 34, 28, 0.8) 0%, rgba(13, 20, 17, 0.95) 100%);
  border-color: var(--panel-border-bright);
  box-shadow: 0 16px 40px rgba(200, 158, 90, 0.15);
}

.matrix-tier-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 12px;
}

.matrix-tier h3 {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 10px;
}

.matrix-tier-window {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.matrix-tier p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.matrix-tier-points {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  border-top: 1px solid var(--panel-border-subtle);
}

.matrix-tier-points li {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 10px 0;
  border-bottom: 1px solid var(--panel-border-subtle);
  color: var(--text-secondary);
}

.matrix-tier-btn {
  margin-top: auto;
  width: 100%;
  text-align: center;
  justify-content: center;
}

.thesis-deep-card--last {
  border-bottom: none;
}

.thesis-actions {
  margin-top: 24px;
}

.thesis-architecture-box--inset {
  background: var(--graphite);
}

@media (max-width: 900px) {
  .vector-detail-grid,
  .thesis-deep-grid,
  .engagement-matrix {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .page-header,
  .vector-detail-block,
  .thesis-deep-card {
    padding: 72px 0;
  }
}