* { box-sizing: border-box; margin: 0; padding: 0; }

.nx-gallery-body {
  background: #0a0a0f;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  font-family: system-ui, -apple-system, sans-serif;
  color: #fff;
}

#nx-gallery-bg {
  position: fixed;
  inset: 0;
  background-color: #06090f;
  z-index: 0;
  transition: background-image 1s ease;
}

/* Pattern 1: dot grid */
#nx-gallery-bg.nx-bg-0 {
  background-image:
    radial-gradient(circle, rgba(64, 140, 230, 0.18) 1px, transparent 1px),
    radial-gradient(circle, rgba(64, 140, 230, 0.07) 1px, transparent 1px);
  background-size: 32px 32px, 8px 8px;
  background-position: 0 0, 16px 16px;
}

/* Pattern 2: hexagonal close-packed lattice (evokes atomic-resolution STEM/HAADF) */
#nx-gallery-bg.nx-bg-1 {
  background-image:
    radial-gradient(circle, rgba(64, 140, 230, 0.14) 1.5px, transparent 1.5px),
    radial-gradient(circle, rgba(64, 140, 230, 0.14) 1.5px, transparent 1.5px);
  background-size: 28px 24px, 28px 24px;
  background-position: 0 0, 14px 12px;
}

/* Pattern 3: intersecting crystal lattice fringes (evokes HRTEM two-beam condition) */
#nx-gallery-bg.nx-bg-2 {
  background-image:
    repeating-linear-gradient(
      65deg,
      transparent 0, transparent 11px,
      rgba(64, 140, 230, 0.08) 11px, rgba(64, 140, 230, 0.08) 12px
    ),
    repeating-linear-gradient(
      -25deg,
      transparent 0, transparent 17px,
      rgba(64, 140, 230, 0.07) 17px, rgba(64, 140, 230, 0.07) 18px
    );
}

#nx-gallery-img {
  position: fixed;
  top: calc((100% - 126px) / 2);
  left: 50%;
  transform: translate(-50%, -50%);
  width: 96vw;
  height: calc(94vh - 126px);
  max-width: 96vw;
  max-height: calc(94vh - 126px);
  object-fit: contain;
  z-index: 1;
  filter: drop-shadow(0 4px 32px rgba(0,0,0,0.8));
  transition: opacity 0.4s ease;
}

#nx-gallery-info {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "title"
    "description"
    "meta";
  row-gap: 3px;
  width: 100%;
  min-height: 126px;
  max-height: 35vh;
  overflow: hidden;
  background: rgba(8, 8, 18, 0.94);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px clamp(24px, 3vw, 56px) 16px;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.28);
}

#nx-gallery-title {
  grid-area: title;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
  max-height: 2.36em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  white-space: normal;
  overflow-wrap: anywhere;
  font-size: clamp(1rem, 0.65vw + 0.7rem, 1.35rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

#nx-gallery-desc {
  grid-area: description;
  min-width: 0;
  max-width: 100%;
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: clamp(0.82rem, 0.18vw + 0.76rem, 0.95rem);
  line-height: 1.3;
  color: #e1e3eb;
}

.nx-gallery-desc-label {
  flex: 0 0 auto;
  color: #a4acbd;
  font-style: italic;
  font-weight: 600;
  line-height: inherit;
}

#nx-gallery-desc-text {
  min-width: 0;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#nx-gallery-meta {
  grid-area: meta;
  min-width: 0;
  font-size: clamp(0.78rem, 0.2vw + 0.72rem, 0.95rem);
  color: #ccc;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

#nx-gallery-featured {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 4px;
  padding-right: 10px;
  border-right: 1px solid rgba(255, 255, 255, 0.25);
  color: #e5bd62;
  font-size: 0.75em;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#nx-gallery-featured[hidden] {
  display: none;
}

.nx-gallery-featured-star {
  font-size: 0.9em;
  line-height: 1;
}

#nx-gallery-link {
  color: #aac;
  text-decoration: none;
  margin-left: auto;
  white-space: nowrap;
}
#nx-gallery-link:hover { text-decoration: underline; }

.nx-sep { color: #555; }

#nx-gallery-facility-name {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 2;
  background: rgba(8, 8, 18, 0.75);
  backdrop-filter: blur(12px);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.03em;
}

#nx-gallery-logo-wrap {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-radius: 8px;
  padding: 8px 14px;
}

#nx-gallery-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nx-arrow {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 3;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 3rem;
  opacity: 0;
  cursor: pointer;
  transition: opacity 0.3s;
}
.nx-arrow-left  { left: 0; }
.nx-arrow-right { right: 0; }
.nx-arrow.nx-visible { opacity: 1; }

#nx-fullscreen-btn {
  position: fixed;
  bottom: 146px;
  right: 20px;
  z-index: 3;
  background: rgba(8, 8, 18, 0.75);
  backdrop-filter: blur(12px);
  border: none;
  border-radius: 8px;
  padding: 8px;
  color: #fff;
  opacity: 0;
  cursor: pointer;
  transition: opacity 0.3s;
  line-height: 0;
}
#nx-fullscreen-btn.nx-visible { opacity: 1; }
#nx-fullscreen-btn svg { width: 20px; height: 20px; display: block; }

@media (max-width: 700px) {
  #nx-gallery-img {
    top: calc((100% - 150px) / 2);
    height: calc(94vh - 150px);
    max-height: calc(94vh - 150px);
  }

  #nx-gallery-info {
    gap: 3px;
    min-height: 150px;
    padding: 12px 20px 14px;
  }

  #nx-gallery-meta {
    align-items: flex-start;
  }

  #nx-gallery-link {
    flex-basis: 100%;
    margin-left: 0;
  }

  #nx-fullscreen-btn {
    bottom: 170px;
  }
}

#nx-progress-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: #bbb;
  z-index: 4;
  transition: none;
}