/* ============================================
   Ether — Landing Page
   ============================================ */

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-wordmark {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--white);
}

.nav-login {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 20px;
  transition: all 0.2s;
}

.nav-login:hover {
  background: var(--white);
  color: var(--black);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + 60px) var(--space-lg) 80px;
}

.hero-label {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-xl);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(5rem, 15vw, 12rem);
  font-weight: 300;
  line-height: 0.9;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xl);
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 200;
  color: var(--gray-500);
  line-height: 1.8;
  max-width: 500px;
  margin-bottom: var(--space-3xl);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.hero-link {
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--gray-500);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: color 0.2s;
}

.hero-link:hover {
  color: var(--white);
}

/* --- Stats Bar --- */
.stats-bar {
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-2xl) 0;
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-700);
}

/* --- Sections --- */
.section {
  padding: 120px 0;
}

.section-dark {
  background: var(--gray-900);
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-label {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  line-height: 1.15;
}

/* --- Steps --- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3xl);
}

.step {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.step-number {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 300;
  color: rgba(255,255,255,0.08);
  line-height: 1;
  margin-bottom: var(--space-lg);
}

.step-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: var(--space-md);
}

.step-text {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--gray-500);
  line-height: 1.7;
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
}

.feature {
  padding: var(--space-2xl);
  background: var(--gray-900);
}

.feature-title {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-md);
}

.feature-text {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-500);
  line-height: 1.7;
}

/* --- Quote --- */
.quote-block {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.quote-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 300;
  line-height: 1.6;
  color: var(--gray-300);
  margin-bottom: var(--space-xl);
}

.quote-source {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-700);
}

/* --- About Grid --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-4xl);
  align-items: start;
}

.about-text {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--gray-300);
  margin-bottom: var(--space-lg);
}

/* --- CTA Section --- */
.cta-section {
  padding: 120px 0;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 300;
  margin-bottom: var(--space-xl);
}

/* --- Footer --- */
.footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-wordmark {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-700);
}

.footer-heading {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-lg);
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-link {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-700);
  margin-bottom: var(--space-sm);
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.75rem;
  color: var(--gray-700);
  font-weight: 300;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: clamp(3.5rem, 18vw, 6rem);
  }
  .hero-cta {
    flex-direction: column;
  }
  .stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
  .steps {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 80px 0;
  }
  .cta-section {
    padding: 80px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}