body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #111;
  color: white;
}

header {
  background: #222;
  padding: 20px;
  text-align: center;
}

.nav-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.back-button {
  background: #333;
  color: #ffcc00;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: bold;
  transition: background 0.2s ease;
}

.back-button:hover {
  background: #555;
}

h1 {
  font-size: 1.4em;
}

.image-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

.image-container img {
  max-width: 100%;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

footer {
  background: #222;
  color: #aaa;
  text-align: center;
  padding: 10px;
}