/* ==========================================================================
   Playbook hub — pillar + spoke pages. Depends on tokens.css + global.css.
   Editorial cream/ink, no accent. Built for readability + AI extraction.
   ========================================================================== */

/* --- Shared page header --- */
.pb-header {
  padding-top: clamp(6rem, 5rem + 6vw, 9rem);
  padding-bottom: var(--space-lg);
  border-bottom: var(--border-hair);
}
.pb-header__title {
  font-size: var(--text-2xl);
  max-width: 20ch;
  margin-top: var(--space-sm);
}
.pb-header__sub {
  margin-top: var(--space-md);
  max-width: 62ch;
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--color-muted);
}

/* --- Credibility strip (the capability-level why-me) --- */
.pb-cred {
  border-bottom: var(--border-hair);
  padding-block: var(--space-lg);
}
.pb-cred__inner { max-width: 70ch; }
.pb-cred p { font-size: var(--text-base); color: var(--color-ink); }
.pb-cred strong { font-weight: 600; }

/* --- Generic section rhythm --- */
.pb-section { padding-block: var(--space-section); border-bottom: var(--border-hair); }
.pb-section:last-of-type { border-bottom: 0; }
.pb-section__lead { max-width: 60ch; margin-bottom: var(--space-lg); }
.pb-section__lead .eyebrow { margin-bottom: var(--space-sm); }
.pb-section__lead h2 { font-size: var(--text-xl); max-width: 22ch; }
.pb-section__lead p { margin-top: var(--space-sm); color: var(--color-muted); font-size: var(--text-lg); line-height: var(--leading-snug); }

/* --- Cluster grid (pillar) --- */
.pb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: 1px;
  background: var(--color-line);
  border: var(--border-hair);
}
.pb-card {
  background: var(--color-cream);
  padding: var(--space-lg) var(--space-md);
  display: flex; flex-direction: column; gap: var(--space-xs);
  transition: background var(--duration-fast) var(--ease-out-expo);
}
.pb-card:hover { background: var(--color-cream-deep); }
.pb-card__num { font-size: var(--text-xs); letter-spacing: var(--tracking-wide); color: var(--color-muted); }
.pb-card__title { font-size: var(--text-lg); }
.pb-card__desc { font-size: var(--text-sm); color: var(--color-muted); line-height: var(--leading-snug); }
.pb-card__more {
  margin-top: auto; padding-top: var(--space-sm); font-size: var(--text-sm); font-weight: 600;
  border-bottom: 1px solid transparent; align-self: flex-start;
}
.pb-card:hover .pb-card__more { border-bottom-color: currentColor; }

/* --- Q&A / FAQ blocks (the extractable core) --- */
.pb-qa { max-width: 68ch; }
.pb-qa__item { padding-block: var(--space-lg); border-bottom: var(--border-hair); }
.pb-qa__item:first-child { padding-top: 0; }
.pb-qa__q { font-size: var(--text-lg); margin-bottom: var(--space-sm); }
.pb-qa__a { color: var(--color-ink); }
.pb-qa__a p + p { margin-top: var(--space-sm); }
.pb-qa__a strong { font-weight: 600; }
.pb-qa__a ul { margin: var(--space-sm) 0 0; padding-left: 1.2em; }
.pb-qa__a li { margin-top: 0.35rem; }
.pb-qa__tag {
  display: inline-block; margin-top: var(--space-sm);
  font-size: var(--text-xs); letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--color-muted);
}

/* In-content links must READ as links (a11y: not color-only) and carry the internal-link graph. */
.pb-qa__a a, .pb-approach p a { border-bottom: 1px solid currentColor; padding-bottom: 1px; }
.pb-approach p a { color: var(--color-cream); }

/* Darken the smallest muted text for WCAG-AA contrast on cream (scoped to the hub only). */
.pb-crumbs, .pb-card__desc, .pb-qa__tag { color: oklch(43% 0.006 60); }

/* --- "How I'd approach it" callout --- */
.pb-approach {
  background: var(--color-black); color: var(--color-on-dark);
  padding: var(--space-lg) var(--space-md); border-radius: var(--radius);
  max-width: 68ch;
}
.pb-approach .eyebrow { color: var(--color-on-dark-muted); }
.pb-approach h3 { color: var(--color-on-dark); font-size: var(--text-lg); margin: var(--space-xs) 0 var(--space-sm); }
.pb-approach p { color: var(--color-on-dark-muted); }
.pb-approach p + p { margin-top: var(--space-sm); }

/* --- Sibling cross-links --- */
.pb-siblings { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-md); }
.pb-siblings a {
  font-size: var(--text-sm); padding: 0.5rem 0.9rem;
  border: var(--border-hair); border-radius: var(--radius);
  transition: background var(--duration-fast) var(--ease-out-expo);
}
.pb-siblings a:hover { background: var(--color-cream-deep); }

/* --- CTA outro --- */
.pb-cta { background: var(--color-black); color: var(--color-on-dark); padding-block: var(--space-xl); }
.pb-cta__inner { max-width: 52ch; }
.pb-cta h2 { color: var(--color-on-dark); font-size: var(--text-xl); }
.pb-cta p { margin-top: var(--space-sm); color: var(--color-on-dark-muted); font-size: var(--text-lg); line-height: var(--leading-snug); }
.pb-cta__btn {
  display: inline-flex; align-items: center; gap: 0.4em; margin-top: var(--space-md);
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-base);
  color: var(--color-on-dark); border-bottom: 1px solid currentColor; padding-bottom: 3px;
  transition: color var(--duration-fast) var(--ease-out-expo);
}
.pb-cta__btn:hover { color: var(--color-cream); }

/* --- Breadcrumb --- */
.pb-crumbs { font-size: var(--text-xs); color: var(--color-muted); letter-spacing: 0.02em; }
.pb-crumbs a { border-bottom: 1px solid transparent; }
.pb-crumbs a:hover { border-bottom-color: currentColor; }
.pb-crumbs span[aria-current] { color: var(--color-ink); }