body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #e2edf7;
}

h1 {
  text-align: center;
  margin: 30px 0;
  font-weight: 600;
}


/* Galerie bleibt wie vorher */
.gallery {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.gallery img {
  height: 150px;
}

/* LIGHTBOX */
#lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  display: none;
  justify-content: center;
  align-items: center;
}

#lightbox img {
  max-width: 80%;
  max-height: 80%;
  border-radius: 10px;
}

/* Pfeile */
.arrow {
  position: absolute;
  font-size: 50px;
  color: white;
  cursor: pointer;
  user-select: none;
  padding: 20px;
}

.arrow.left {
  left: 20px;
}

.arrow.right {
  right: 20px;
}

/* Schliessen */
.close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 35px;
  color: white;
  cursor: pointer;
}