/**
 * Shared layout primitives: containers, section rhythm, text utilities.
 */

.container {
  width: 100%;
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.section {
  padding-block: var(--space-24);
  position: relative;
}

@media (max-width: 767px) {
  .section {
    padding-block: var(--space-16);
  }
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-12);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary-strong);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-primary-strong);
  display: inline-block;
}

.section-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-4xl);
  }
}

.section-lead {
  color: var(--color-fg-muted);
  font-size: var(--text-lg);
  max-width: 60ch;
}

.visually-hidden-heading {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* Reveal-on-scroll (progressive enhancement; JS adds .is-visible) */
.reveal {
  opacity: 1;
  transform: none;
}

.js-enabled .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.js-enabled .reveal.is-visible {
  opacity: 1;
  transform: none;
}

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