body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f5f5f5;
  color: #333;
}

header {
  text-align: center;
  padding: 30px;
  background: #111;
  color: white;
}

h1, h2 {
  margin: 10px 0;
}

.gallery-section {
  margin: 30px auto;
  max-width: 1000px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 15px;
}

.gallery img {
  width: 100%;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.3s;
}

.gallery img:hover {
  transform: scale(1.05);
}

#lightbox {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

#lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 6px;
}

#close-btn {
  position: absolute;
  top: 20px; right: 30px;
  font-size: 40px;
  color: white;
  cursor: pointer;
  user-select: none;
  z-index: 10000;
}

/* UPDATED Arrows */
.arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  font-size: 60px;           /* Daha büyük font */
  color: white;
  background: rgba(0,0,0,0.5);
  padding: 15px 20px;        /* Daha büyük tıklanabilir alan */
  border-radius: 50%;
  cursor: pointer;
  user-select: none;
  z-index: 10001;
  transition: background-color 0.3s ease;
}

.arrow:hover {
  background: rgba(0,0,0,0.8);
}

#prev-btn {
  left: 20px;
}

#next-btn {
  right: 20px;
}