/* Purpose: Structural layout primitives — container, section, grids, eyebrow, headings. */

.container {
  width: 100%;
  max-width: var(--container-2xl);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-lg); }
.container--wide   { max-width: var(--container-max); }

.section {
  position: relative;
  padding-block: var(--section-y);
}
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--dark {
  background: var(--color-ink);
  color: var(--color-text-invert);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--color-text-invert); }
.section--alt { background: var(--color-bg-alt); }
.section--surface { background: var(--color-surface); }

/* Eyebrow / kicker */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::after {
  content: "";
  width: clamp(28px, 5vw, 56px);
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}
.eyebrow--center { justify-content: center; }
.eyebrow--center::before {
  content: "";
  width: clamp(28px, 5vw, 56px);
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

/* Section heading */
.section-title {
  font-size: var(--text-4xl);
  margin-top: var(--space-5);
}
.section-head {
  max-width: 46ch;
}
.section-head--center { margin-inline: auto; text-align: center; }
.section-lead {
  margin-top: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-md);
  max-width: 56ch;
}
.section--dark .section-lead { color: var(--color-text-invert-muted); }
.section-head--center .section-lead { margin-inline: auto; }

/* Grids */
.grid { display: grid; gap: var(--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); }

@media (max-width: 1023px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.divider {
  width: 64px; height: 1px;
  background: var(--color-primary);
  opacity: 0.5;
  margin-block: var(--space-6);
  border: 0;
}
.divider--center { margin-inline: auto; }

/* Reveal base state (JS toggles .is-visible) */
.reveal { opacity: 0; transform: translateY(28px); }
.is-ready .reveal { transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}