/* ===========================================
   NARRATIVE COMMONS — Root Site Design System
   Intelligence briefing meets academic journal
   =========================================== */

:root {
  /* Dark primary palette */
  --nc-bg: #0c0c11;
  --nc-bg-alt: #111117;
  --nc-surface: #1a1a22;
  --nc-surface-hover: #22222c;
  --nc-elevated: #2a2a36;
  --nc-border: #2a2a3a;
  --nc-border-hover: #3a3a4e;

  /* Text */
  --nc-text-bright: #eae8e4;
  --nc-text-primary: #c0bdb6;
  --nc-text-secondary: #7a7770;
  --nc-text-muted: #4a4840;

  /* Accent — Narrative Commons gold */
  --nc-gold: #c9a84c;
  --nc-gold-dim: rgba(201, 168, 76, 0.15);
  --nc-gold-glow: rgba(201, 168, 76, 0.08);

  /* Confidence colors */
  --nc-green: #10b981;
  --nc-amber: #f59e0b;
  --nc-red: #ef4444;

  /* Category accents */
  --nc-investigation: #c0392b;
  --nc-framework: #3b82f6;
  --nc-comparative: #8b5cf6;

  /* Typography */
  --font-serif: 'EB Garamond', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
  --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 2rem;
  --sp-xl: 3rem;
  --sp-2xl: 5rem;
  --sp-3xl: 8rem;

  /* Transitions */
  --t-fast: 150ms ease;
  --t-normal: 300ms ease;
  --t-slow: 600ms ease;
  --t-dramatic: 1000ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===========================================
   RESET & BASE
   =========================================== */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  background: var(--nc-bg);
  color: var(--nc-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: var(--nc-gold);
  color: var(--nc-bg);
}

a {
  color: var(--nc-gold);
  text-decoration: none;
  transition: color var(--t-fast);
}

a:hover {
  color: var(--nc-text-bright);
}

/* ===========================================
   NAVIGATION
   =========================================== */

.nc-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(12, 12, 17, 0.85);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--nc-border);
  padding: var(--sp-sm) 0;
}

.nc-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nc-nav-brand {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--nc-text-bright);
  text-decoration: none;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.nc-nav-brand:hover {
  color: var(--nc-gold);
}

.nc-nav-links {
  display: flex;
  gap: var(--sp-lg);
}

.nc-nav-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--nc-text-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--t-fast);
}

.nc-nav-link:hover {
  color: var(--nc-text-bright);
}

/* ===========================================
   HERO
   =========================================== */

.nc-hero {
  padding: calc(var(--sp-3xl) + 60px) var(--sp-lg) var(--sp-3xl);
  max-width: 1200px;
  margin: 0 auto;
}

.nc-hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--nc-gold);
  margin-bottom: var(--sp-md);
}

.nc-hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 600;
  color: var(--nc-text-bright);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-md);
  max-width: 800px;
}

.nc-hero-subtitle {
  font-size: 1.25rem;
  color: var(--nc-text-secondary);
  max-width: 650px;
  line-height: 1.7;
  margin-bottom: var(--sp-xl);
}

.nc-hero-rule {
  width: 80px;
  height: 1px;
  background: var(--nc-gold);
  border: none;
  opacity: 0.5;
}

/* ===========================================
   SECTION LAYOUT
   =========================================== */

.nc-section {
  padding: var(--sp-2xl) var(--sp-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.nc-section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--nc-gold);
  margin-bottom: var(--sp-md);
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.nc-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--nc-border), transparent);
}

.nc-section h2 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--nc-text-bright);
  margin-bottom: var(--sp-sm);
  letter-spacing: -0.02em;
}

.nc-section-desc {
  font-size: 1.05rem;
  color: var(--nc-text-secondary);
  max-width: 700px;
  margin-bottom: var(--sp-xl);
  line-height: 1.7;
}

/* ===========================================
   ANALYSIS CARDS
   =========================================== */

.nc-analyses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: var(--sp-lg);
}

.nc-analysis-card {
  background: var(--nc-surface);
  border: 1px solid var(--nc-border);
  border-radius: 3px;
  overflow: hidden;
  transition: all var(--t-normal);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.nc-analysis-card:hover {
  border-color: var(--nc-border-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  color: inherit;
}

.nc-card-accent {
  height: 3px;
  width: 100%;
}

.nc-card-accent.investigation { background: var(--nc-investigation); }
.nc-card-accent.framework { background: var(--nc-framework); }
.nc-card-accent.comparative { background: var(--nc-comparative); }

.nc-card-body {
  padding: var(--sp-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.nc-card-meta {
  display: flex;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
  flex-wrap: wrap;
}

.nc-card-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  border: 1px solid;
}

.nc-card-tag.investigation {
  color: var(--nc-investigation);
  border-color: rgba(192, 57, 43, 0.3);
  background: rgba(192, 57, 43, 0.08);
}

.nc-card-tag.framework {
  color: var(--nc-framework);
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.08);
}

.nc-card-tag.single-source {
  color: var(--nc-amber);
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.08);
}

.nc-card-tag.multi-source {
  color: var(--nc-green);
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.08);
}

.nc-card-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--nc-text-bright);
  margin-bottom: var(--sp-sm);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.nc-card-subtitle {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--nc-text-secondary);
  margin-bottom: var(--sp-md);
  line-height: 1.5;
}

.nc-card-desc {
  font-size: 0.9rem;
  color: var(--nc-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.nc-card-footer {
  padding: var(--sp-sm) var(--sp-lg);
  border-top: 1px solid var(--nc-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--nc-text-muted);
}

.nc-card-source {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
}

.nc-card-arrow {
  color: var(--nc-gold);
  font-size: 0.8rem;
  transition: transform var(--t-fast);
}

.nc-analysis-card:hover .nc-card-arrow {
  transform: translateX(4px);
}

/* ===========================================
   METHODOLOGY SECTION
   =========================================== */

.nc-method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-lg);
  margin-top: var(--sp-lg);
}

.nc-method-card {
  padding: var(--sp-lg);
  background: var(--nc-surface);
  border: 1px solid var(--nc-border);
  border-radius: 3px;
  transition: border-color var(--t-normal);
}

.nc-method-card:hover {
  border-color: var(--nc-gold);
}

.nc-method-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--nc-gold);
  letter-spacing: 0.15em;
  margin-bottom: var(--sp-sm);
}

.nc-method-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--nc-text-bright);
  margin-bottom: var(--sp-sm);
}

.nc-method-card p {
  font-size: 0.9rem;
  color: var(--nc-text-secondary);
  line-height: 1.7;
}

/* ===========================================
   PRINCIPLES
   =========================================== */

.nc-principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}

.nc-principle {
  padding: var(--sp-md) var(--sp-lg);
  border-left: 2px solid var(--nc-border);
  transition: border-color var(--t-fast);
}

.nc-principle:hover {
  border-color: var(--nc-gold);
}

.nc-principle strong {
  display: block;
  color: var(--nc-text-bright);
  font-size: 0.95rem;
  margin-bottom: var(--sp-xs);
}

.nc-principle span {
  font-size: 0.85rem;
  color: var(--nc-text-secondary);
  line-height: 1.6;
}

/* ===========================================
   ABOUT / MISSION
   =========================================== */

.nc-mission-text {
  max-width: 750px;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--nc-text-primary);
  margin-bottom: var(--sp-lg);
}

.nc-mission-text strong {
  color: var(--nc-text-bright);
}

.nc-not-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--sp-sm);
  margin: var(--sp-lg) 0;
}

.nc-not-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--nc-text-muted);
  padding: var(--sp-sm);
  border: 1px solid var(--nc-border);
  border-radius: 2px;
}

.nc-not-item .not-x {
  color: var(--nc-red);
  margin-right: var(--sp-xs);
}

/* ===========================================
   FOOTER
   =========================================== */

.nc-footer {
  border-top: 1px solid var(--nc-border);
  padding: var(--sp-2xl) var(--sp-lg);
  margin-top: var(--sp-2xl);
}

.nc-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-xl);
}

.nc-footer h4 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--nc-text-muted);
  margin-bottom: var(--sp-md);
}

.nc-footer p {
  font-size: 0.9rem;
  color: var(--nc-text-secondary);
  line-height: 1.7;
}

.nc-footer ul {
  list-style: none;
}

.nc-footer li {
  margin-bottom: var(--sp-xs);
}

.nc-footer a {
  font-size: 0.9rem;
  color: var(--nc-text-secondary);
}

.nc-footer a:hover {
  color: var(--nc-gold);
}

.nc-footer-bottom {
  max-width: 1200px;
  margin: var(--sp-lg) auto 0;
  padding: var(--sp-lg) var(--sp-lg) 0;
  border-top: 1px solid var(--nc-border);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--nc-text-muted);
  letter-spacing: 0.05em;
}

/* ===========================================
   REVEAL ANIMATIONS
   =========================================== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-dramatic), transform var(--t-dramatic);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.stagger > .reveal:nth-child(2) { transition-delay: 120ms; }
.stagger > .reveal:nth-child(3) { transition-delay: 240ms; }
.stagger > .reveal:nth-child(4) { transition-delay: 360ms; }
.stagger > .reveal:nth-child(5) { transition-delay: 480ms; }
.stagger > .reveal:nth-child(6) { transition-delay: 600ms; }

/* ===========================================
   RESPONSIVE
   =========================================== */

@media (max-width: 768px) {
  html { font-size: 16px; }

  .nc-nav-links { display: none; }

  .nc-hero { padding-top: calc(var(--sp-2xl) + 60px); }

  .nc-analyses-grid { grid-template-columns: 1fr; }

  .nc-footer-inner { grid-template-columns: 1fr; }

  .nc-method-grid { grid-template-columns: 1fr; }

  .nc-principles { grid-template-columns: 1fr; }

  .nc-not-list { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .nc-hero-title { font-size: 2rem; }
  .nc-not-list { grid-template-columns: 1fr; }
}

/* ===========================================
   PRINT
   =========================================== */

@media print {
  body { background: white; color: #1a1a1a; }
  .nc-nav { display: none; }
  .reveal { opacity: 1; transform: none; }
}