/* ==========================================================================
   Chapter shell — the rhythm the page alternates on.
   Every chapter is either `on-bone` or left on ink; none of them carry a box.
   ========================================================================== */

.chapter {
  position: relative;
  padding-block: var(--chapter-y);
}

.chapter--tight { padding-block: clamp(3.5rem, 2rem + 5vw, 6.5rem); }

/* Full-bleed photographic chapter: image behind, content above. */
.chapter--photo { isolation: isolate; overflow: hidden; }

.chapter__bg { position: absolute; inset: 0; z-index: -2; }

.chapter__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Backdrops are texture, not subject: pulled down so the type dominates. */
  filter: grayscale(0.45) contrast(1.05);
}

.chapter__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  /* A navy wash off the brand mark keeps the dark chapters reading as the
     club's own colour rather than neutral black. */
  background:
    radial-gradient(ellipse 130% 90% at 50% 0%,
      color-mix(in srgb, var(--brand-navy) 45%, transparent), transparent 72%),
    linear-gradient(
      to bottom,
      rgba(4, 10, 19, 0.95) 0%,
      rgba(4, 10, 19, 0.89) 45%,
      rgba(4, 10, 19, 0.97) 100%
    );
}

/* ---- Chapter heading ------------------------------------------------------- */

.chapter__head { margin-bottom: clamp(2.5rem, 1.5rem + 3.4vw, 5rem); }

.chapter__title {
  margin-block: var(--space-5) 0;
  font-size: var(--fs-display);
  line-height: var(--lh-display);
}

.chapter__title--sm { font-size: var(--fs-display-sm); }

.chapter__lead {
  max-width: 52ch;
  margin-top: var(--space-5);
  font-size: var(--fs-lead);
  line-height: 1.9;
}

/* Heading opposite a short piece of supporting copy */
.chapter__head--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  align-items: end;
  gap: clamp(1.5rem, 0.8rem + 2.4vw, 4rem);
}

.chapter__head--split .chapter__lead { margin-top: 0; }