/* ============================================================================
   Layout — container, sections, grid
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
  box-sizing: border-box;
}

.container--narrow {
  max-width: var(--container-narrow);
}

.main {
  position: relative;
  z-index: 1;
}

.section {
  padding: var(--space-24) 0;
  position: relative;
  background: var(--color-canvas);
}
.section--dense { padding: var(--space-24) 0; }
.section--airy { padding: var(--space-32) 0; }
/* No full-bleed zebra bands / hairline rulers between sections */
.section--surface {
  background: var(--color-canvas);
  border-top: none;
  border-bottom: none;
}
.section--cta {
  background: var(--color-canvas);
  border-top: none;
}

.section-head {
  max-width: 70ch;
  margin-bottom: var(--space-12);
}
.section-head .lead { margin-top: var(--space-3); }

.section-tail {
  margin-top: var(--space-12);
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
}

.page-head {
  max-width: 70ch;
  margin-bottom: var(--space-12);
}
.page-head .lead { margin-top: var(--space-3); }

.page-foot-cta {
  margin-top: var(--space-32);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  text-align: left;
  max-width: 65ch;
}
.page-foot-cta .lead { margin: var(--space-3) 0 var(--space-6); }

@media (max-width: 768px) {
  .section { padding: var(--space-16) 0; }
  .section--airy { padding: var(--space-20) 0; }
  .section--dense { padding: var(--space-16) 0; }
  .section-head { margin-bottom: var(--space-8); }
  .page-foot-cta { margin-top: var(--space-20); }
}

/* Breadcrumbs */
.breadcrumbs {
  padding-top: var(--space-6);
  padding-bottom: 0;
}
.breadcrumbs ol {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
  font-size: var(--fs-caption);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.breadcrumbs li::after {
  content: "/";
  margin-left: var(--space-2);
  color: var(--color-border-strong);
}
.breadcrumbs li:last-child::after { content: ""; }
.breadcrumbs a:hover { color: var(--color-text-secondary); }
.breadcrumbs [aria-current="page"] { color: var(--color-text-secondary); }

/* Anchor row (in-section nav) */
.anchor-row {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}
.anchor-row a {
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  border-bottom: 1px solid transparent;
  transition: color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);
}
.anchor-row a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}