/* ══════════════════════════════════════════════════════
   THEME: Monograph — Typographic / Book
   ══════════════════════════════════════════════════════ */

/* Header: thin hairline border, centered */
[data-preset='monograph'] .header {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid var(--border-subtle);
}

[data-preset='monograph'] .header__nav {
  justify-content: center;
}

[data-preset='monograph'] .header__nav-link {
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

[data-preset='monograph'] .header__nav-link:hover,
[data-preset='monograph'] .header__nav-link.active {
  color: var(--text-primary);
  border-bottom-color: var(--text-primary);
}

/* Photo grid: numbered indices with CSS counter */
[data-preset='monograph'] .photo-grid {
  counter-reset: photo-index;
  /* Preset default only — an explicit grid.gap lands inline and wins (#513). */
  --grid-gap: 40px;
}

[data-preset='monograph'] .photo-grid__item {
  counter-increment: photo-index;
  margin-bottom: 48px;
}

[data-preset='monograph'] .photo-grid__item::before {
  content: counter(photo-index, decimal-leading-zero);
  position: absolute;
  top: -28px;
  left: 0;
  font-family: var(--font-caption);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  z-index: 2;
  pointer-events: none;
}

[data-preset='monograph'] .photo-grid__item:hover img {
  filter: none;
  transform: none;
}

[data-preset='monograph'] .photo-grid__item:active img {
  filter: brightness(0.85);
  transform: none;
}

/* Caption slide-up on hover */
[data-preset='monograph'] .photo-grid__item-exif {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: var(--font-caption);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  padding: 10px 12px;
  opacity: 0;
  transform: translateY(100%);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease;
}

[data-preset='monograph'] .photo-grid__item:hover .photo-grid__item-exif {
  opacity: 1;
  transform: translateY(0);
}

/* Album cards: minimal text below */
[data-preset='monograph'] .album-card {
  border: 1px solid var(--border-subtle);
  border-radius: 0;
}

[data-preset='monograph'] .album-card:hover {
  border-color: var(--text-primary);
  transform: none;
}

[data-preset='monograph'] .album-card:hover .album-card__image {
  transform: none;
  filter: none;
}

[data-preset='monograph'] .album-card__overlay {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.4) 0%, transparent 30%);
  opacity: 1;
}

[data-preset='monograph'] .album-card__title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

[data-preset='monograph'] .album-card__count {
  font-family: var(--font-caption);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
}

/* Section labels: thin hairline rule */
[data-preset='monograph'] .section-label {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

/* Album & Subpage header: large serif with wide spacing */
[data-preset='monograph'] .album-header {
  margin-bottom: 72px;
}

[data-preset='monograph'] .album-header__title,
[data-preset='monograph'] .subpage-title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
}

[data-preset='monograph'] .album-header__meta,
[data-preset='monograph'] .subpage-subtitle {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-top: 12px;
}

/* Footer */
[data-preset='monograph'] .footer {
  border-top: 1px solid var(--border-subtle);
}

[data-preset='monograph'] .footer__name {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
}

/* Main: extra generous margins */
[data-preset='monograph'] ~ body .main {
  padding: 80px 60px 120px;
}

/* Subpage grid */
[data-preset='monograph'] .subpage-grid {
  --subpage-gap: 1px;
}

[data-preset='monograph'] .subpage-grid__item {
  border: 1px solid var(--border-subtle);
}

[data-preset='monograph'] .subpage-grid__item-title {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Subpage TOC: book-indexed, hairline */
[data-preset='monograph'] .subpage-toc {
  margin-bottom: 64px;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 0;
}

[data-preset='monograph'] .subpage-toc__entry {
  padding: 6px 0;
  border-bottom: 1px solid var(--border-subtle);
}

[data-preset='monograph'] .subpage-toc__entry:last-child {
  border-bottom: none;
}

[data-preset='monograph'] .subpage-toc__entry + .subpage-toc__entry::before {
  display: none;
}

[data-preset='monograph'] .subpage-toc__link {
  display: flex;
  gap: 20px;
  align-items: baseline;
  color: var(--text-secondary);
}

[data-preset='monograph'] .subpage-toc__link:hover {
  color: var(--text-primary);
}

[data-preset='monograph'] .subpage-toc__num {
  font-family: var(--font-caption);
  font-size: 0.65rem;
  color: var(--text-muted);
  min-width: 24px;
}

[data-preset='monograph'] .subpage-toc__label {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* Section: hairline rule, generous serif title */
[data-preset='monograph'] .subpage-section__title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
}

[data-preset='monograph'] .subpage-section__desc {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

[data-preset='monograph'] .subpage-section__rule {
  background: var(--border-subtle);
  height: 1px;
}

@media (max-width: 1024px) {
  .photo-grid {
    --grid-columns: 2;
  }

  .album-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 640px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__right {
    order: -1;
    height: 50vh;
    height: 50svh;
    min-height: 200px;
  }

  .hero__left {
    padding: 40px 24px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .photo-grid {
    --grid-columns: 1;
  }

  .album-grid {
    grid-template-columns: 1fr;
  }

  .subpage-grid {
    grid-template-columns: 1fr;
  }

  .main {
    padding: 32px 20px 80px;
  }

  .header__nav-link {
    padding: 14px 10px;
    font-size: 0.6rem;
  }

  .album-header__title {
    font-size: 1.8rem;
  }

  .album-card__overlay {
    opacity: 1;
  }

  .subpage-grid__item-overlay {
    opacity: 1;
  }

  [data-photo-frame='passepartout'] .photo-grid__item {
    padding: 6px 6px 18px;
  }

  /* Minimal: adjust fullbleed hero for mobile */
  [data-preset='minimal'] .hero__left {
    padding: 20px 24px;
  }

  [data-preset='minimal'] .hero__right {
    height: 70vh;
    height: 70svh;
  }

  /* Editorial: scale down oversized title */
  [data-preset='editorial'] .hero__title {
    font-size: 2.5rem;
  }

  [data-preset='editorial'] .album-header__title {
    font-size: 2rem;
  }

  /* Classic: scale title */
  [data-preset='classic'] .hero__title {
    font-size: 2rem;
  }

  /* Stacked: compact overlay */
  .hero__stacked-overlay {
    padding: 24px 20px;
  }

  .hero--stacked .hero__title {
    font-size: 2rem;
  }

  .hero__thumbnail-item {
    padding: 12px 20px;
  }

  /* Typographic: scale down massive title */
  .hero--typographic {
    padding: 40px 24px;
  }

  .hero--typographic .hero__title {
    font-size: 3.5rem;
  }

  /* Mosaic: simplify to 2-column */
  .hero__mosaic-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }

  .hero__mosaic-cell--1 {
    grid-row: auto;
  }

  .hero__mosaic-cell--2 {
    grid-column: auto;
  }

  .hero__mosaic-cell:nth-child(n + 5) {
    display: none;
  }

  .hero__mosaic-overlay {
    padding: 24px 28px;
  }

  .hero--mosaic .hero__title {
    font-size: 2rem;
  }

  /* Monograph: scale album header */
  [data-preset='monograph'] .album-header__title {
    font-size: 2rem;
  }
}