/* Layout - Grid System & Spacing */

/* Container */
.container {
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* Section Spacing */
section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

section + section {
  border-top: 1px solid var(--color-border);
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
}

.nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-wordmark {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}

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

.nav-links a {
  font: var(--type-label);
}

/* Hero Section — Asymmetric Grid */
.hero {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-2xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: 45% 55%;
  gap: var(--space-xl);
  align-items: center;
}

.hero-content {
  max-width: none;
  margin: 0;
}

.hero-title {
  margin-bottom: var(--space-sm);
}

.hero-tagline {
  margin-bottom: var(--space-md);
}

.hero-description {
  margin-bottom: var(--space-lg);
  max-width: 420px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

/* Feature Deep — Two-column asymmetric */
.feature-deep {
  display: grid;
  grid-template-columns: 45% 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.feature-deep--reversed {
  grid-template-columns: 1fr 45%;
}

.feature-deep--reversed .feature-deep-text {
  order: 2;
}

.feature-deep--reversed .feature-deep-visual {
  order: 1;
}

.feature-number {
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  color: var(--color-gray-light);
}

.feature-deep-title {
  margin-bottom: var(--space-md);
}

.feature-deep-description {
  max-width: 420px;
}

/* Statement Section — Full-width typography */
.statement {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.statement-text {
  max-width: 880px;
}

.statement-text code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background-color: #F5F5F5;
  padding: 2px 6px;
  border-radius: var(--radius-small);
}

/* Statement centered variant */
.statement--centered {
  text-align: center;
}

.statement--centered .statement-text {
  margin-left: auto;
  margin-right: auto;
}

/* Architecture — Two-column with spec table */
.arch-grid {
  display: grid;
  grid-template-columns: 45% 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table tr {
  border-bottom: 1px solid var(--color-border);
}

.spec-table td {
  padding: var(--space-sm) 0;
  vertical-align: top;
}

.spec-table td:first-child {
  font-weight: 600;
  width: 140px;
  padding-right: var(--space-md);
}

/* CTA Section — Asymmetric */
.cta-section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-xl);
  align-items: center;
}

.cta-actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}

/* Footer — Asymmetric */
footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-wordmark {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  font: var(--type-body-medium);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

/* Responsive Layout */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .feature-deep,
  .feature-deep--reversed {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .feature-deep--reversed .feature-deep-text {
    order: 1;
  }

  .feature-deep--reversed .feature-deep-visual {
    order: 2;
  }

  .arch-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cta-grid {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  section {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
  }

  .hero {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-lg);
  }

  .nav-links {
    display: none;
  }

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    min-width: unset;
  }

  .cta-actions {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
    min-width: unset;
  }

  .footer-grid {
    flex-direction: column;
    gap: var(--space-md);
    align-items: flex-start;
  }

  .footer-links {
    gap: var(--space-md);
  }

  .statement {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
  }
}

/* Utility Spacing */
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }