/* ============================================
   Layout — Container, Grid, Sections
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

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

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

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

.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__header h2 {
  position: relative;
  display: inline-block;
}

.section__header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: var(--space-sm) auto 0;
  border-radius: 2px;
}

.section__subtitle {
  color: var(--color-text-light);
  font-size: 1.1rem;
  max-width: 600px;
  margin: var(--space-sm) auto 0;
}

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

.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--column { flex-direction: column; }
.flex--gap { gap: var(--space-md); }

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