body {
  margin: 0;
  font-family: "Helvetica Neue", sans-serif;
  background-color: #f8f9fa;
  color: #333;
}

header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 10;
}

h1 {
  margin: 0 0 10px;
  font-size: 2rem;
  text-align: center;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

nav button {
  padding: 6px 12px;
  border: none;
  background-color: #e0e0e0;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
}

nav button.active,
nav button:hover {
  background-color: #333;
  color: #fff;
}

main#gallery {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  animation: fadeIn 1s ease;
}

.photo-card {
  width: 100%;
  max-width: 720px;
  margin-bottom: 30px;
  animation: slideUp 0.5s ease forwards;
  opacity: 0;
}

.photo-card img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.photo-card img:hover {
  transform: scale(1.02);
}

.photo-info {
  margin-top: 10px;
  padding: 8px 16px;
  background: #fff;
  border-left: 4px solid #333;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  border-radius: 0 8px 8px 0;
}

.photo-info p {
  margin: 4px 0;
  font-size: 14px;
  color: #555;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 14px;
  color: #999;
}

/* Animations */
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}