body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  background: #faf7f5;
  color: #333;
}

header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #f5e1dc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  transition: padding 0.3s ease;
  z-index: 1000;
}

header.shrink {
  padding: 10px 30px;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #b58a7c;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
  transition: color 0.3s;
}

nav a:hover {
  color: #b58a7c;
}

main {
  padding-top: 100px;
}

.gallery-section {
  padding: 40px 20px;
}

.gallery-section h2 {
  text-align: center;
  color: #b58a7c;
  margin-bottom: 20px;
}

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

.gallery-grid img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.2s;
}

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

.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.lightbox-content {
  max-width: 80%;
  max-height: 80%;
  border-radius: 10px;
}

.close {
  position: absolute;
  top: 20px;
  right: 40px;
  font-size: 2rem;
  color: white;
  cursor: pointer;
}

#backToTop {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #f5e1dc;
  color: #333;
  border: none;
  padding: 10px 15px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background 0.3s;
  z-index: 1500;
}

#backToTop:hover {
  background: #b58a7c;
  color: white;
}