/* Art-directed photo grid (EditorialGrid.jsx). Tokens come from .epg in epmGallery.css. */
.epg-mosaic {
  --epg-mosaic-gap: clamp(8px, 1.1vw, 16px);
  --epg-feature-h: clamp(340px, 40vw, 580px);
  --epg-duo-h: clamp(250px, 29vw, 440px);
  display: grid;
  gap: var(--epg-mosaic-gap);
}

.epg-mosaic-row {
  display: grid;
  gap: var(--epg-mosaic-gap);
}

/* the row itself stays put - its tiles stagger in instead (below) */
.epg-mosaic-row.epg-reveal {
  opacity: 1;
  transform: none;
}

/* one large photo with two stacked beside it */
.epg-mosaic-row.is-feature-left,
.epg-mosaic-row.is-feature-right {
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  height: var(--epg-feature-h);
}

.epg-mosaic-row.is-feature-left > :first-child {
  grid-row: 1 / span 2;
}

.epg-mosaic-row.is-feature-right {
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
}

.epg-mosaic-row.is-feature-right > :first-child {
  grid-column: 2;
  grid-row: 1 / span 2;
}

.epg-mosaic-row.is-feature-right > :nth-child(2) { grid-column: 1; grid-row: 1; }
.epg-mosaic-row.is-feature-right > :nth-child(3) { grid-column: 1; grid-row: 2; }

.epg-mosaic-row.is-trio {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.epg-mosaic-row.is-trio > * {
  aspect-ratio: 4 / 3;
}

/* two photos, one wider than the other */
.epg-mosaic-row.is-duo-left,
.epg-mosaic-row.is-duo-right {
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  height: var(--epg-duo-h);
}

.epg-mosaic-row.is-duo-right {
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
}

/* a one-photo album: shown whole, at its own proportions */
.epg-mosaic-row.is-single {
  justify-items: center;
}

.epg-mosaic-row.is-single > * {
  width: min(100%, calc(76vh * var(--epg-ratio, 1.5)));
  aspect-ratio: var(--epg-ratio, 1.5);
}

/* ---------- Tile ---------- */
.epg-tile {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: var(--epg-radius, 16px);
  overflow: hidden;
  isolation: isolate;
  cursor: zoom-in;
  background: var(--epg-sunken, #eceee6);
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--epg-ease),
    transform 0.9s var(--epg-ease);
}

.epg-mosaic-row.is-shown > .epg-tile,
.epg-tile.epg-skeleton {
  opacity: 1;
  transform: none;
}

.epg-tile.epg-skeleton {
  cursor: default;
}

.epg-mosaic-row.is-shown > .epg-tile:nth-child(2) { transition-delay: 0.09s; }
.epg-mosaic-row.is-shown > .epg-tile:nth-child(3) { transition-delay: 0.18s; }

.epg-tile-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--epg-ease);
}

.epg-tile::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background: linear-gradient(0deg, rgba(5, 20, 13, 0.58) 0%, rgba(5, 20, 13, 0) 46%);
  box-shadow: inset 0 0 0 1px rgba(16, 32, 26, 0.06);
  opacity: 0;
  transition: opacity 0.45s var(--epg-ease);
  pointer-events: none;
}

.epg-tile-meta {
  position: absolute;
  left: 18px;
  right: 16px;
  bottom: 16px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s var(--epg-ease), transform 0.5s var(--epg-ease);
}

.epg-tile-num {
  font-family: var(--epg-font-text);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  font-variant-numeric: tabular-nums;
}

.epg-tile-zoom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.36);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@media (hover: hover) {
  .epg-tile:hover .epg-tile-img { transform: scale(1.045); }
  .epg-tile:hover::after { opacity: 1; }
  .epg-tile:hover .epg-tile-meta { opacity: 1; transform: none; }
}

.epg-tile:focus-visible {
  outline: 3px solid var(--epg-saffron, #f5a900);
  outline-offset: 3px;
}

.epg-tile:focus-visible::after,
.epg-tile:focus-visible .epg-tile-meta {
  opacity: 1;
  transform: none;
}

/* ---------- Small screens: lead photo full width, the rest in pairs ---------- */
@media (max-width: 720px) {
  .epg-mosaic-row.is-feature-left,
  .epg-mosaic-row.is-feature-right,
  .epg-mosaic-row.is-trio,
  .epg-mosaic-row.is-duo-left,
  .epg-mosaic-row.is-duo-right {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: none;
    height: auto;
  }

  .epg-mosaic-row.is-feature-left > *,
  .epg-mosaic-row.is-feature-right > *,
  .epg-mosaic-row.is-trio > *,
  .epg-mosaic-row.is-duo-left > *,
  .epg-mosaic-row.is-duo-right > * {
    grid-column: auto;
    grid-row: auto;
    aspect-ratio: 4 / 3;
  }

  /* undo the mirrored row's fixed placement (same specificity as the desktop rules above) */
  .epg-mosaic-row.is-feature-right > :nth-child(2),
  .epg-mosaic-row.is-feature-right > :nth-child(3) {
    grid-column: auto;
    grid-row: auto;
  }

  .epg-mosaic-row.is-feature-left > :first-child,
  .epg-mosaic-row.is-feature-right > :first-child,
  .epg-mosaic-row.is-trio > :first-child {
    grid-column: 1 / -1;
    grid-row: auto;
    aspect-ratio: 3 / 2;
  }

  .epg-tile { border-radius: var(--epg-radius-sm, 12px); }
  .epg-tile-meta { left: 12px; right: 10px; bottom: 10px; }
  .epg-tile-zoom { width: 32px; height: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .epg-tile,
  .epg-tile-img,
  .epg-tile::after,
  .epg-tile-meta {
    transition: none;
  }
  .epg-tile { opacity: 1; transform: none; }
}