/* THNK Alpha Landing Page — Dark Gold Editorial Theme */

:root {
  --bg-primary: #0D0C0A;
  --bg-secondary: #141210;
  --bg-card: #1A1814;
  --gold: #C8A96E;
  --gold-dim: rgba(200, 169, 110, 0.6);
  --gold-glow: rgba(200, 169, 110, 0.08);
  --off-white: #F0EDE6;
  --text-primary: #F0EDE6;
  --text-secondary: rgba(240, 237, 230, 0.55);
  --text-muted: rgba(240, 237, 230, 0.3);
  --border: rgba(200, 169, 110, 0.15);
  --border-dim: rgba(200, 169, 110, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.4;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border-dim);
  background: rgba(13, 12, 10, 0.85);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 24px;
}

.nav-logo {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.nav-alpha {
  color: var(--gold);
}

.nav-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-cta {
  margin-left: auto;
}
.nav-cta-link {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  padding: 7px 16px;
  border: 1px solid var(--border);
  transition: all 0.2s;
  font-weight: 500;
}
.nav-cta-link:hover {
  background: var(--gold-glow);
  border-color: var(--gold-dim);
}

/* Hero */
.hero {
  padding: 80px 48px 100px;
  border-bottom: 1px solid var(--border-dim);
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 80px;
  align-items: center;
}

.hero-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
  font-weight: 500;
}

.hero-headline {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  font-size: clamp(3rem, 5vw, 4.5rem);
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.hero-rule {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin-bottom: 28px;
  opacity: 0.8;
}

.hero-lede {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 48px;
  font-weight: 300;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--gold);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Hero visual */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.constellation {
  width: 100%;
  max-width: 480px;
  opacity: 0.9;
}

.hero-visual-caption {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
}

/* Philosophy */
.philosophy {
  padding: 100px 48px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-dim);
}

.philosophy-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  font-weight: 500;
}

.section-headline {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 600;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 64px;
  max-width: 600px;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-dim);
  border: 1px solid var(--border-dim);
}

.philosophy-item {
  padding: 40px 36px;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.philosophy-number {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--gold);
  opacity: 0.6;
  letter-spacing: 0.1em;
}

.philosophy-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.philosophy-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
}

/* Mechanics */
.mechanics {
  padding: 100px 48px;
  border-bottom: 1px solid var(--border-dim);
}

.mechanics-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.mechanics-flow {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-top: 64px;
}

.flow-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
}

.flow-connector {
  display: flex;
  align-items: center;
  padding: 0 8px;
  padding-top: 60px;
  flex-shrink: 0;
}

.flow-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.flow-body {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
}

/* Manifesto */
.manifesto {
  padding: 100px 48px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-dim);
}

.manifesto-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.manifesto-quote {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.manifesto-text {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  line-height: 1.5;
  color: var(--text-primary);
  font-style: italic;
}

.manifesto-cite {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-style: normal;
}

.manifesto-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.manifesto-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
}

.manifesto-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.manifesto-feature p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 300;
}

/* Closing */
.closing {
  padding: 100px 48px;
  border-bottom: 1px solid var(--border-dim);
}

.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.closing-headline {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 24px;
  max-width: 700px;
}

.closing-body {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 640px;
  margin-bottom: 48px;
  font-weight: 300;
}

.closing-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.closing-tag {
  padding: 8px 18px;
  border: 1px solid var(--border);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-dim);
  font-weight: 500;
}

.closing-cta {
  display: inline-block;
  margin-top: 32px;
  padding: 14px 32px;
  background: var(--gold);
  color: var(--bg-primary);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: opacity 0.2s;
}
.closing-cta:hover { opacity: 0.85; }

/* Footer */
.footer {
  padding: 48px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
}

.footer-logo {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.footer-alpha {
  color: var(--gold);
}

.footer-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: 0.1em;
}

.footer-legal p {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 480px;
  text-align: right;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    order: -1;
  }

  .constellation {
    max-width: 320px;
  }

  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  .mechanics-flow {
    flex-direction: column;
  }

  .flow-connector {
    padding: 8px 0;
    justify-content: center;
  }

  .flow-connector svg {
    transform: rotate(90deg);
  }

  .manifesto-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 24px;
  }

  .footer-legal p {
    text-align: left;
  }
}

@media (max-width: 600px) {
  .nav {
    padding: 16px 24px;
  }

  .hero {
    padding: 60px 24px 80px;
  }

  .philosophy,
  .mechanics,
  .manifesto,
  .closing {
    padding: 60px 24px;
  }

  .hero-stats {
    gap: 32px;
    flex-wrap: wrap;
  }
}