/* ---------- Reset & base ---------- */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: #0b0b0c;
  color: #e9e6e0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
}

/* ---------- Header ---------- */
.site-header {
  text-align: center;
  padding: 2.75rem 1rem 1.75rem;
}

.site-title {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: #f2efe9;
}

.site-subtitle {
  margin: 0.6rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8a8680;
}

/* ---------- Gallery grid (masonry via columns) ---------- */
.gallery {
  column-count: 2;
  column-gap: 2px;
  padding: 2px;
  max-width: 1400px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .gallery { column-count: 3; }
}

@media (min-width: 960px) {
  .gallery { column-count: 4; }
}

@media (min-width: 1300px) {
  .gallery { column-count: 5; }
}

.piece-card {
  break-inside: avoid;
  margin-bottom: 2px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: #131314;
}

.piece-card img {
  width: 100%;
  display: block;
  transition: transform 0.35s ease, opacity 0.35s ease;
  opacity: 0;
}

.piece-card img.loaded {
  opacity: 1;
}

.piece-card:hover img {
  transform: scale(1.03);
}

.piece-card-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.9rem 0.7rem 0.6rem;
  background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(0,0,0,0));
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.piece-card:hover .piece-card-label,
.piece-card:focus-visible .piece-card-label {
  opacity: 1;
  transform: translateY(0);
}

.piece-card-number {
  color: #b23a3a;
  font-weight: 600;
  margin-right: 0.4em;
}

/* On touch devices there's no hover, so show the label faintly all the time */
@media (hover: none) {
  .piece-card-label {
    opacity: 1;
    transform: none;
    background: linear-gradient(to top, rgba(0,0,0,0.75), rgba(0,0,0,0));
  }
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(6, 6, 7, 0.97);
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 3.5rem 1rem 2.5rem;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-content {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

.lightbox-images {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  justify-content: center;
  align-items: flex-start;
}

.lightbox-image-block {
  flex: 1 1 320px;
  max-width: 520px;
}

.lightbox-image-block img {
  width: 100%;
  border: 1px solid #232224;
  background: #131314;
}

.lightbox-image-caption {
  margin-top: 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8a8680;
}

.lightbox-info {
  margin-top: 1.75rem;
}

.lightbox-number {
  color: #b23a3a;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  font-weight: 600;
}

.lightbox-name {
  margin: 0.35rem 0 0.9rem;
  font-size: 1.5rem;
  font-weight: 600;
  color: #f2efe9;
}

.lightbox-meta {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: #b7b3ac;
}

.lightbox-meta dt {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #726e68;
  margin: 0 0 0.2rem;
}

.lightbox-meta dd {
  margin: 0;
}

.lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1px solid #2c2b2d;
  background: rgba(19, 19, 20, 0.9);
  color: #e9e6e0;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  z-index: 110;
}

.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 50%;
  border: 1px solid #2c2b2d;
  background: rgba(19, 19, 20, 0.9);
  color: #e9e6e0;
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
  z-index: 110;
}

.lightbox-prev { left: 0.75rem; }
.lightbox-next { right: 0.75rem; }

@media (max-width: 640px) {
  .lightbox-nav { display: none; }
}

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 2.5rem 1rem 3rem;
  font-size: 0.72rem;
  color: #5c5952;
  letter-spacing: 0.03em;
}