.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Section spacing */
.section {
  padding: var(--space-xl) 0;
}

.section-alt {
  padding: var(--space-xl) 0;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-sand {
  padding: var(--space-xl) 0;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-dark {
  padding: var(--space-xl) 0;
  background-color: var(--color-primary);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--color-white);
}

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

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Text alignment */
.text-center { text-align: center; }

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .container, .container-narrow {
    padding: 0 var(--space-sm);
  }

  .section, .section-alt, .section-sand, .section-dark {
    padding: var(--space-lg) 0;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }

  .section, .section-alt, .section-sand, .section-dark {
    padding: var(--space-md) 0;
  }
}