/* Structural layout: containers, grid, section rhythm */

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

.container--narrow {
  max-width: 800px;
}

section {
  position: relative;
}

.section {
  padding-block: var(--space-9);
}

@media (max-width: 1024px) {
  .section {
    padding-block: var(--space-8);
  }
}

@media (max-width: 640px) {
  .section {
    padding-block: var(--space-7);
  }
}

.section--tight {
  padding-block: var(--space-8);
}

.section--alt {
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-border);
}

.section--dark {
  background: var(--color-brand);
  color: #fff;
}

.section--dark h2,
.section--dark h3 {
  color: #fff;
}

.section--dark p {
  color: rgba(255, 255, 255, 0.7);
}


.section-head {
  max-width: 640px;
  margin-bottom: var(--space-8);
}

.section-head--center {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}

.section-head h2 {
  margin-top: var(--space-4);
}

.section-head p {
  margin-top: var(--space-4);
}

@media (max-width: 640px) {
  .section-head {
    margin-bottom: var(--space-6);
  }
}

/* Generic responsive grids */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

@media (max-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .grid--3,
  .grid--2 {
    grid-template-columns: 1fr;
  }
}

.stack {
  display: flex;
  flex-direction: column;
}

.cluster {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Thin horizontal rule, used as a quiet section divider */
.rule {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: 0;
}