/* ============================================================================
   SIRO Layer Diagram — vertical build-up stack.
   ============================================================================ */

.siro-layers {
  margin: 0 0 var(--siro-space-7);
  font-family: var(--siro-font-body);
}

.siro-layers__caption {
  font-family: var(--siro-font-body);
  font-size: var(--siro-fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--siro-color-primary);
  margin: 0 0 var(--siro-space-2);
}

.siro-layers__wrap {
  padding: var(--siro-space-5);
  background: var(--siro-surface-low);
  border-radius: var(--siro-radius-md);
  border: 1px solid var(--siro-outline-dark);
}

.siro-layers__item {
  padding: 11px 14px;
  background: var(--siro-surface);
  margin-bottom: 6px;
  border-radius: var(--siro-radius-sm);
  border: 1px solid var(--siro-outline-dark);
  border-left: 3px solid transparent;
  font-weight: 500;
  font-size: var(--siro-fs-sm);
  color: var(--siro-text);
}
.siro-layers__item:last-child { margin-bottom: 0; }

.siro-layers__item--highlight {
  background: rgba(194, 155, 39, 0.08);
  border-left-color: var(--siro-color-accent);
  color: var(--siro-color-primary);
  font-weight: 700;
}