body {
  background: #f8f9fb;
  color: #1e293b;
  font-family: Arial, sans-serif;
}

header {
  background: #0f172a;
  color: white;
}

nav a {
  color: white;
}

nav a:hover {
  color: #60a5fa;
}

.card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
}

footer {
  background: #1e293b;
  color: #cbd5e1;
}
.plot-image {
    max-width: 80%;
    height: auto;
}