/* ================================================
   Layout — Containers, Grids, Sections
   ================================================ */

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

.container--narrow {
  max-width: var(--container-narrow);
}

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

.section--dark {
  background-color: var(--color-dark);
  color: var(--color-text-on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-text-on-dark);
}

.section--dark p {
  color: var(--color-text-on-dark-muted);
}

.section--alt {
  background-color: var(--color-light-alt);
}

/* Section headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: var(--fs-body-lg);
}

.section-label {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

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

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

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

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

/* Flex utilities */
.flex {
  display: flex;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

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

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

.flex--gap-sm { gap: var(--space-sm); }
.flex--gap-md { gap: var(--space-md); }
.flex--gap-lg { gap: var(--space-lg); }
.flex--gap-xl { gap: var(--space-xl); }

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