/* ==========================================================================
   Layout — grid, sections, spacing system
   ========================================================================== */

/* Section spacing */
.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.section--sm {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section--lg {
  padding-block: clamp(4.5rem, 10vw, 9rem);
}

.section--flush {
  padding-block: 0;
}

/* Section header pattern */
.section__header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  max-width: 42rem;
}

.section__header--center {
  text-align: center;
  margin-inline: auto;
}

.section__header .lead {
  margin-top: var(--space-4);
}

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

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

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

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

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

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

.flex--wrap {
  flex-wrap: wrap;
}

.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); }

/* Stack (vertical rhythm) */
.stack > * + * {
  margin-top: var(--space-4);
}

.stack--sm > * + * {
  margin-top: var(--space-2);
}

.stack--lg > * + * {
  margin-top: var(--space-6);
}

/* Divider */
.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin-block: var(--space-12);
}

.divider--subtle {
  background: var(--color-border-subtle);
}

/* Aspect ratios */
.aspect-video {
  aspect-ratio: 16 / 9;
}

.aspect-square {
  aspect-ratio: 1 / 1;
}

.aspect-portrait {
  aspect-ratio: 3 / 4;
}

.aspect-wide {
  aspect-ratio: 21 / 9;
}