* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0e0e0e;
  color: #fff;
  font-family: system-ui, sans-serif;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  padding: 12px;
}

.thumb {
  width: 100%;
  height: auto;
  cursor: pointer;
  border-radius: 4px;
  transition: transform 0.2s ease;
}

.thumb:hover {
  transform: scale(1.04);
}

/* VIEWER */
#viewer {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

#viewer img {
  max-width: 95%;
  max-height: 95%;
}

#close {
  position: absolute;
  top: 20px;
  right: 30px;
  background: none;
  border: none;
  color: white;
  font-size: 40px;
  cursor: pointer;
}

.empty {
  padding: 2rem;
  text-align: center;
  opacity: 0.7;
}