/* Shared styles for the per-era gallery pages (wwii/korea/vietnam.html). */

/* intro */
.era-intro {
  padding: var(--gap-xl) 2rem;
  border-bottom: 1px solid var(--border);
}

.era-intro-inner {
  max-width: 720px;
  margin: 0 auto;
}

.era-intro-inner p {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 1.1rem;
}
.era-intro-inner p:last-of-type { margin-bottom: 0; }
.era-intro-inner em { font-style: italic; }

.era-intro-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  margin-top: 1.25rem;
}
.era-intro-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.era-intro-link::after { content: '\2192'; }

.era-crumb { color: inherit; text-decoration: none; }
.era-crumb:hover { text-decoration: underline; text-underline-offset: 2px; }

/* objects section */
.objects-section {
  padding: var(--gap-xl) 2rem;
}

.objects-section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.objects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: var(--gap-md);
}

.objects-header-left h2 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  color: var(--text);
  line-height: 1.15;
  margin-top: 0.5rem;
}

.objects-count {
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: 0.04em;
  white-space: nowrap;
  padding-bottom: 0.25rem;
}

/* photos / documents toggle */
.view-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.25rem;
}
.view-toggle:empty { display: none; }

.view-btn {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border-mid);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.view-btn:hover {
  background: var(--navy-pale);
  border-color: var(--navy);
  color: var(--navy);
}

.view-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}

.view-btn-count {
  opacity: 0.65;
  font-weight: 500;
  margin-left: 0.15rem;
}
.view-btn:not(.active) .view-btn-count { color: var(--text-3); }

/* object cards */
.object-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.object-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  background: #fff;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.object-card:hover {
  border-color: var(--border-mid);
  box-shadow: 0 4px 18px rgba(0,0,0,0.08);
}

.object-card-thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--off);
  position: relative;
}

.object-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

.object-card:hover .object-card-thumb img {
  transform: scale(1.05);
}

.object-card-body {
  padding: 0.8rem 0.95rem 1rem;
}

.object-card-attribution {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.45rem;
  line-height: 1.3;
}

.object-card-title {
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 0.4rem;
}

.object-card-desc {
  font-size: 0.72rem;
  color: var(--text-2);
  line-height: 1.45;
  margin-bottom: 0.4rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.object-card-meta {
  font-size: 0.7rem;
  color: var(--text-3);
}

/* responsive */
@media (max-width: 1100px) {
  .object-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .era-intro { padding: var(--gap-lg) 1.5rem; }
  .objects-section { padding: var(--gap-lg) 1.5rem; }
  .objects-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .object-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 380px) {
  .object-grid { grid-template-columns: 1fr; }
}

/* lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(6, 16, 27, 0.93);
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  cursor: zoom-out;
}

.lightbox.is-open { display: flex; }

.lightbox-inner {
  position: relative;
  max-width: min(92vw, 1100px);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: default;
}

.lightbox-img {
  display: block;
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
}

.lightbox-caption {
  margin-top: 1rem;
  text-align: center;
}

.lightbox-caption-title {
  color: rgba(255,255,255,0.92);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
}

.lightbox-caption-desc {
  color: rgba(255,255,255,0.72);
  font-size: 0.8rem;
  line-height: 1.55;
  margin-top: 0.5rem;
  max-width: 62ch;
  margin-left: auto;
  margin-right: auto;
  white-space: pre-line;
  text-align: left;
  max-height: 34vh;
  overflow-y: auto;
}

.lightbox-caption-meta {
  color: rgba(255,255,255,0.45);
  font-size: 0.75rem;
  margin-top: 0.5rem;
}

.lightbox-close {
  position: absolute;
  top: -2.75rem;
  right: 0;
  background: none;
  border: none;
  color: rgba(255,255,255,0.6);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  transition: color 0.15s;
}

.lightbox-close:hover { color: #fff; }

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: rgba(255,255,255,0.75);
  font-size: 1.5rem;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s;
}

.lightbox-nav:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.lightbox-nav--prev { left: -3.5rem; }
.lightbox-nav--next { right: -3.5rem; }

@media (max-width: 640px) {
  .lightbox-nav--prev { left: -2.75rem; }
  .lightbox-nav--next { right: -2.75rem; }
  .lightbox-nav { width: 2.25rem; height: 2.25rem; font-size: 1.2rem; }
}