body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;
  background: #111;
  color: #eee;
  text-align: center;
}

h1 { margin: 20px 0; }

.nodata { padding: 40px; color: #aaa; }

#biome-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}
#biome-tabs button {
  background: #333;
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  color: #eee;
}
#biome-tabs button.active { background: #666; }

#slider {
  position: relative;
  max-width: 900px;
  margin: auto;
  overflow: hidden;
}
#slider img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.6);
}

.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  color: white;
  background: rgba(0,0,0,0.3);
  border: none;
  cursor: pointer;
  padding: 0 12px;
  border-radius: 50%;
}
.arrow.left { left: 10px; }
.arrow.right { right: 10px; }

#biome-tabs { position: relative; z-index: 5; }