:root {
  --bg: #071026;
  --card: #0b1220;
  --accent: #7c3aed;
  --muted: #9aa4b2;
  --white: #e6eef6;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: #002252;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

.card {
  width: min(1100px, 96%);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.03);
}

header {
  display: flex;
  gap: 12px;
  align-items: center;
}

.logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #22c1c3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: 18px;
}

.lead {
  margin: 4px 0 12px;
  color: var(--muted);
  font-size: 14px
}

/* Grid gallery */
.gallery-wrap {
  margin-top: 12px
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.thumb {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.01), rgba(255, 255, 255, 0.005));
  border: 1px solid rgba(255, 255, 255, 0.03);
  cursor: pointer;
  display: block;
  text-decoration: none;
}

.thumb img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  transition: transform .35s ease, filter .35s ease;
  will-change: transform;
}

.thumb:hover img,
.thumb:focus img {
  transform: scale(1.06);
  filter: brightness(1.06);
}

.thumb .caption {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 8px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.0), rgba(0, 0, 0, 0.45));
  color: #fff;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Lightbox modal */
.lightbox {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 60;
}

.lightbox[aria-hidden="false"] {
  display: flex;
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.7);
  backdrop-filter: blur(4px);
  cursor: pointer;
}

.lightbox-panel {
  position: relative;
  z-index: 62;
  max-width: 92%;
  max-height: 86%;
  width: 920px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.lb-figure {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  max-height: 100%;
}

.lb-figure img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(2, 6, 23, 0.6);
  display: block;
}

.lb-caption {
  margin-top: 8px;
  color: var(--muted);
  text-align: center;
  font-size: 14px
}

/* Controls */
.lb-prev,
.lb-next,
.lb-close {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--white);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 16px;
}

.lb-close {
  position: absolute;
  top: -52px;
  right: 0;
  transform: translateY(0);
  background: transparent;
  border: 0;
  font-size: 20px;
  color: var(--muted);
}

.lb-prev,
.lb-next {
  flex: 0 0 auto
}

/* responsive tweaks */
@media (max-width:920px) {
  .lb-close {
    top: 8px;
    right: 8px;
  }

  .lb-figure img {
    max-height: 70vh
  }
}

@media (max-width:520px) {
  .gallery {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
  }

  .thumb img {
    height: 120px
  }

  .lightbox-panel {
    width: 96%
  }
}

/* small helpers */
.small {
  font-size: 13px;
  color: var(--muted)
}