/* ==========================================================================
   Layout — Sections, Grids, Responsive Framework
   ========================================================================== */

.section {
  padding: var(--space-20) 0;
  position: relative;
}

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

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

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

.section--dark .section-label {
  color: var(--color-bitstream-blue);
}

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

.section--alt2 {
  background: var(--color-surface-alt);
}

/* --- Grid Systems --- */

.grid {
  display: grid;
  gap: var(--space-8);
}

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

@media (min-width: 600px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1200px) {
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* --- Flex Utilities --- */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --- Section Spacing Adjustments --- */

@media (max-width: 599px) {
  .section {
    padding: var(--space-12) 0;
  }
}

@media (min-width: 600px) and (max-width: 899px) {
  .section {
    padding: var(--space-16) 0;
  }
}