/* ============================================
   NUKA · GALLERY v2
   Asymmetric masonry, editorial pacing
   ============================================ */

/* Base gallery — full width, edge to edge */
.nuka-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  width: 100%;
  padding: 0 var(--padding-x);
}

/* Featured grid on home — same styling as masonry */
.nuka-gallery--featured {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  width: 100%;
  padding: 0 var(--padding-x);
}

@media (min-width: 768px) {
  .nuka-gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .nuka-gallery--featured {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .nuka-gallery {
    grid-template-columns: repeat(3, 1fr);
  }

  .nuka-gallery--featured {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
  }

  /* First 2 items in home span 2 cols each (first row = 2 items) */
  .nuka-gallery--featured .nuka-card:nth-child(-n+2) {
    grid-column: span 2;
  }
}

/* ============================================
   MASONRY-STYLE ASYMMETRIC GRID
   For projects page — unified with featured
   ============================================ */

.nuka-gallery--masonry {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gallery-gap);
  width: 100%;
  padding: 0 var(--padding-x);
}

@media (min-width: 768px) {
  .nuka-gallery--masonry {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
}

@media (min-width: 1024px) {
  .nuka-gallery--masonry {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }
}

/* ============================================
   FILTERS
   ============================================ */

.nuka-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.nuka-filter-btn {
  font-family: var(--font-display);
  font-size: clamp(13px, 1.2vw, 18px);
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: none;
  border: 2px solid transparent;
  padding: 14px 24px;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
  flex-shrink: 0;
}

.nuka-filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.nuka-filter-btn.is-active {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

/* Sticky filters bar */
.nuka-filters--sticky {
  position: sticky;
  top: var(--nav-height);
  z-index: calc(var(--z-nav) - 1);
  background: var(--color-bg);
  padding: var(--space-md) var(--padding-x);
  margin-bottom: var(--space-xl);
}

/* Remove nuka-container inner padding to allow full bleed on mobile */
.nuka-filters--sticky .nuka-container {
  padding: 0;
}

.nuka-filters__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.nuka-filters__techniques {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
  gap: var(--space-sm);
  scrollbar-width: none;
  padding-bottom: var(--space-xs);
}

.nuka-filters__techniques::-webkit-scrollbar {
  display: none;
}

.nuka-filters__series {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nuka-serie-select {
  font-family: var(--font-display);
  font-size: clamp(13px, 1.2vw, 18px);
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: none;
  border: 2px solid var(--color-border);
  padding: 14px 40px 14px 16px;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b6b6b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  min-width: 160px;
  min-height: 44px;
}

.nuka-serie-select:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.nuka-serie-select.is-active {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.nuka-serie-indicator {
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.nuka-serie-indicator strong {
  color: var(--color-primary);
  font-weight: 600;
}

.nuka-serie-clear {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 10px;
  padding: 0 0 0 6px;
  line-height: 1;
  transition: color var(--transition-fast);
}

.nuka-serie-clear:hover {
  color: var(--color-primary);
}

.nuka-filter-btn.is-inactive {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

/* ============================================
   CARD
   ============================================ */

.nuka-card {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
  z-index: var(--z-card);
}

.nuka-card__image {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface);
  flex: 1;
  min-height: 200px;
  z-index: var(--z-card);
}

.nuka-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-mid), filter var(--transition-mid);
}

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

/* Card info — editorial, compact */
.nuka-card__info {
  padding: var(--space-sm) 0 var(--space-xl);
}

.nuka-card__title {
  font-family: var(--font-body);
  font-size: var(--text-meta);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.nuka-card__meta {
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
}

/* ============================================
   CARD OVERLAY VARIANT
   For immersive hover states
   ============================================ */

.nuka-card--overlay .nuka-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-mid);
}

.nuka-card--overlay:hover .nuka-card__image::after {
  opacity: 1;
}

.nuka-card--overlay .nuka-card__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg);
  z-index: 2;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-mid), transform var(--transition-mid);
}

.nuka-card--overlay:hover .nuka-card__info {
  opacity: 1;
  transform: translateY(0);
}

.nuka-card--overlay .nuka-card__title {
  color: var(--color-bg);
}

.nuka-card--overlay .nuka-card__meta {
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   LIGHTBOX
   ============================================ */

.nuka-lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-lightbox);
  background-color: var(--color-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-mid), visibility var(--transition-mid);
}

.nuka-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.nuka-lightbox__img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  animation: nukaLightboxImg 400ms ease forwards;
}

.nuka-lightbox__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg);
  background: none;
  border: none;
  cursor: pointer;
}

.nuka-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg);
  background: none;
  border: none;
  cursor: pointer;
}

.nuka-lightbox__nav--prev {
  left: var(--space-lg);
}

.nuka-lightbox__nav--next {
  right: var(--space-lg);
}

/* ============================================
   FILTER RESPONSIVE — MOBILE SCROLL
   ============================================ */

@media (max-width: 767px) {
  .nuka-filters__inner {
    flex-direction: column;
    /* Era flex-start, y en un contenedor en columna eso hace que cada hijo mida su contenido en
       lugar del ancho disponible: con cuatro o más tipos de obra, la fila de botones crecía más
       que la pantalla y arrastraba toda la página en horizontal. */
    align-items: stretch;
  }

  .nuka-filters__techniques {
    /* Los botones se reparten en varias líneas en vez de esconderse tras un scroll lateral. Un
       filtro que no se ve es un filtro que no existe, y el cliente sigue añadiendo tipos. */
    flex-wrap: wrap;
    overflow-x: visible;
    /* Un item flex no puede encogerse por debajo de su contenido mientras min-width valga auto. */
    min-width: 0;
    width: 100%;
    padding-bottom: 0;
  }

  /* Menos aire horizontal para que entren más por línea; el alto mínimo táctil no se toca. */
  .nuka-filter-btn {
    padding: 10px 14px;
  }

  .nuka-filters__series {
    width: 100%;
    margin-top: var(--space-sm);
  }

  .nuka-serie-select {
    min-width: 140px;
    width: 100%;
  }
}

@media (min-width: 768px) {
  .nuka-filters__techniques {
    flex-wrap: wrap;
    overflow-x: visible;
    gap: var(--space-md);
    padding-bottom: 0;
  }
}