body {
  font-family: Arial, sans-serif;
  background: #f7f7f7;
  margin: 0;
  padding: 0;
}

header {
  background: #1a237e;
  color: white;
  padding: 15px;
  text-align: center;
}

.btn {
  background: white;
  color: #1a237e;
  padding: 8px 12px;
  text-decoration: none;
  border-radius: 8px;
  margin-left: 10px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 15px;
  padding: 20px;
}

.gallery img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.admin-panel {
  text-align: center;
  padding: 20px;
}

.admin-panel input, button {
  margin: 10px;
  padding: 10px;
  width: 250px;
}

footer {
  text-align: center;
  background: #1a237e;
  color: white;
  padding: 10px;
}

#logoutBtn {
  background: crimson;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 20px;
}