body {
  margin: 0;
  font-family: sans-serif;
  background: #111;
  color: #fff;
  padding-top: 60px; /* Make room for fixed header */
}
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #000;
  border-bottom: 2px solid #333;
  z-index: 1000;
  padding: 12px 0;
}
.ca-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 15px;
}
.ca-label {
  font-weight: bold;
  font-size: 1em;
  color: #aaa;
}
.ca-address {
  font-family: 'Courier New', monospace;
  font-size: 0.95em;
  background: #222;
  padding: 8px 12px;
  border-radius: 6px;
  color: #f7931a;
  border: 1px solid #333;
  word-break: break-all;
}
.copy-btn {
  background: #f7931a;
  color: #000;
  border: none;
  padding: 8px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  font-size: 0.9em;
  transition: all 0.2s;
}
.copy-btn:hover {
  background: #ff9f1a;
  transform: scale(1.05);
}
.copy-btn:active {
  transform: scale(0.95);
}
.copy-btn.copied {
  background: #0f0;
}
#masonry, #image-container {
  column-count: 3;
  column-gap: 0;
  max-width: 100%;
  padding-bottom: 60px;
}
img {
  width: 100%;
  display: block;
  margin-bottom: 0;
  break-inside: avoid;
  border-radius: 8px;
}
footer {
  text-align: center;
  padding: 1em;
  font-size: 0.9em;
  background: #000;
  color: #aaa;
  position: fixed;
  bottom: 0;
  width: 100%;
}
footer a {
  color: #fff;
  text-decoration: underline;
}
@media (max-width: 768px) {
  #masonry, #image-container {
    column-count: 2;
  }
}
@media (max-width: 480px) {
  #masonry, #image-container {
    column-count: 1;
  }
}