/* ── FILTER BAR ──────────────────────────────────── */
.filter-bar {
  position: sticky; top: 0; z-index: 90; background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 40px; height: 56px;
  transition: box-shadow 0.2s;
}
.filter-bar.scrolled { box-shadow: 0 2px 12px rgba(28,21,16,0.07); }
.medium-tabs { display: flex; height: 100%; }
.tab {
  height: 100%; padding: 0 18px; background: transparent; border: none;
  border-bottom: 2px solid transparent; font-family: var(--sans); font-size: 13px;
  font-weight: 400; color: var(--muted); cursor: pointer; transition: all 0.15s; white-space: nowrap;
}
.tab:hover { color: var(--ink); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── GALLERY ─────────────────────────────────────── */
.gallery-wrap { padding: 48px 40px 80px; }
.medium-section { margin-bottom: 56px; }
.section-header { display: flex; align-items: baseline; gap: 12px; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.medium-heading { font-family: var(--serif); font-size: 22px; font-weight: 400; font-style: italic; color: var(--ink); }

.grid { column-count: 3; column-gap: 16px; }

.item {
  break-inside: avoid; display: block; width: 100%;
  margin-bottom: 16px; cursor: pointer;
  transition: opacity 0.18s ease;
}
.item.hidden { display: none; }
.item.fading { opacity: 0; pointer-events: none; }

.item-img { overflow: hidden; background: var(--muted-bg); position: relative; }
.item-img img { display: block; width: 100%; height: auto; transition: transform 0.35s ease; }
.item:hover .item-img img { transform: scale(1.03); }

/* series badge */
.series-badge {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(28,21,16,0.65); color: var(--bg);
  font-size: 10px; font-weight: 500; letter-spacing: 0.04em;
  padding: 3px 7px; border-radius: 2px;
  pointer-events: none;
}

.item-caption { padding: 9px 12px 11px; background: var(--muted-bg); }
.caption-title { display: block; font-size: 13px; font-weight: 500; color: var(--ink); }
.caption-meta  { display: block; font-size: 11px; color: var(--muted); margin-top: 2px; letter-spacing: 0.03em; }

@media (max-width: 1100px) { .grid { column-count: 2; } }
@media (max-width: 560px)  { .grid { column-count: 1; } }

/* ── LIGHTBOX ────────────────────────────────────── */
#lightbox {
  display: none; position: fixed; inset: 0; z-index: 1000;
  background: rgba(28,21,16,0.9); padding: 40px 24px;
  overflow-y: auto; align-items: flex-start; justify-content: center;
}
#lightbox.open { display: flex; }

#lightbox-inner {
  background: var(--bg); max-width: 800px; width: 100%;
  margin: auto; cursor: default; box-shadow: 0 32px 80px rgba(28,21,16,0.4);
}
#lightbox-img-wrap {
  background: var(--muted-bg); display: flex; align-items: center; justify-content: center;
  padding: 20px; position: relative;
}
#lightbox-img-wrap img { display: block; width: 100%; max-height: 68vh; object-fit: contain; }

/* carousel arrows — sit inside the image area */
.lb-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(28,21,16,0.45); border: none; color: var(--bg);
  width: 40px; height: 40px; border-radius: 2px;
  font-size: 20px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s; z-index: 10;
}
.lb-arrow:hover { background: rgba(28,21,16,0.75); }
.lb-arrow.hidden { display: none; }
#lb-prev { left: 12px; }
#lb-next { right: 12px; }

#lightbox-meta { padding: 20px 28px 28px; }
#lb-title-row { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 6px; }
#lb-title { font-family: var(--serif); font-size: 22px; font-weight: 400; letter-spacing: -0.01em; }
#lb-counter { font-size: 11px; color: var(--muted); letter-spacing: 0.06em; white-space: nowrap; }
#lb-counter:empty { display: none; }
#lb-info { font-size: 12px; color: var(--muted); letter-spacing: 0.05em; text-transform: uppercase; }
#lb-desc { font-size: 14px; line-height: 1.7; color: var(--ink); margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
#lb-desc:empty { display: none; }

#lightbox-close {
  position: absolute; top: 20px; right: 24px; background: none; border: none;
  font-size: 22px; color: var(--bg); cursor: pointer; opacity: 0.7; transition: opacity 0.15s; line-height: 1; z-index: 1001;
}
#lightbox-close:hover { opacity: 1; }

/* ── EMPTY STATE ─────────────────────────────────── */
.empty-state { display: none; padding: 80px 40px; text-align: center; color: var(--muted); font-style: italic; font-family: var(--serif); font-size: 18px; }
.empty-state.visible { display: block; }

/* ── MOBILE ──────────────────────────────────────── */
@media (max-width: 768px) {
  .filter-bar { position: static; padding: 0 20px; }
  .medium-tabs { flex-wrap: wrap; height: auto; padding: 10px 0; }
  .tab { height: 36px; padding: 0 12px; font-size: 12px; }
  .gallery-wrap { padding: 24px 20px 60px; }
  #lightbox { padding: 16px 12px; }
  #lightbox-meta { padding: 16px 20px 24px; }
  .lb-arrow { width: 36px; height: 36px; font-size: 18px; }
}