body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: white;
}

.wrap {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

.layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 20px;
}

.card {
  background: #111827;
  border-radius: 12px;
  padding: 15px;
}

button {
  width: 100%;
  padding: 10px;
  margin: 5px 0;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

canvas {
  background: #1f6f3d;
  width: 100%;
  border-radius: 12px;
}