/* ═══════════════════════════════════════════════
   gallery.css  —  Filter bar + card grid
   ═══════════════════════════════════════════════ */

/* ── FILTER BAR ──────────────────────────────── */
.filter-bar {
  position: sticky;
  top: var(--nav-h);
  z-index: 400;
  background: var(--paper);
  border-bottom: 1px solid var(--accent-lt);
  padding: 16px 56px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--warm-dark);
  margin-right: 10px;
}

.filter-btn {
  background: none;
  border: 1px solid var(--warm-mid);
  border-radius: var(--radius);
  padding: 5px 16px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm-dark);
  cursor: pointer;
  transition: all var(--trans);
}

.filter-btn:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: var(--panel);
}

.filter-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

/* ── GALLERY MAIN ────────────────────────────── */
.gallery-main {
  padding: 3px 3px 100px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 3px;
}

.gallery-empty {
  text-align: center;
  padding: 80px 20px;
  font-size: 14px;
  color: var(--warm-dark);
  font-style: italic;
}

.gallery-empty.hidden { display: none; }

/* ── ART CARD ────────────────────────────────── */
.art-card {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  cursor: pointer;
  background: var(--panel);
  outline: none;
  /* transform transition handled inline by JS for stagger */
}

.art-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 0px solid var(--accent);
  transition: border-width 0.2s ease;
  pointer-events: none;
  z-index: 3;
}

.art-card:focus-visible::after { border-width: 3px; }

.art-card:hover .card-img,
.art-card:hover .card-placeholder { transform: scale(1.045); }

.art-card:hover .card-overlay { opacity: 1; }

/* image */
.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* placeholder */
.card-placeholder {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.card-placeholder .ph-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.card-placeholder .ph-emoji {
  font-size: 44px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 4px 14px rgba(0,0,0,0.28));
}

/* index badge */
.card-index {
  position: absolute;
  top: 14px;
  left: 16px;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(245,240,232,0.55);
  font-weight: 300;
  z-index: 2;
}

/* hover overlay */
.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(26,22,16,0.90) 0%,
    rgba(26,22,16,0.38) 48%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.32s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px 22px;
  color: var(--paper);
  z-index: 2;
}

.ov-series {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.65;
  margin-bottom: 4px;
}

.ov-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 5px;
}

.ov-meta {
  font-size: 11px;
  letter-spacing: 0.12em;
  opacity: 0.7;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.ov-award {
  display: inline-block;
  background: rgba(201,150,42,0.28);
  border: 1px solid rgba(201,150,42,0.55);
  border-radius: var(--radius);
  padding: 3px 10px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-lt);
  width: fit-content;
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 640px) {
  .filter-bar { padding: 14px 16px; top: 52px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 2px; }
  .gallery-main { padding: 2px 2px 80px; }
}