body {
  margin: 0;
  padding: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #1a1a1a;
  color: #fff;
}

.simulator-container {
  max-width: 1200px;
  margin: 0 auto;
}

.controls {
  background: #2a2a2a;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 20px;
}

.strategy-select {
  margin-bottom: 15px;
}

.params {
  display: flex;
  gap: 20px;
  margin-bottom: 15px;
}

.param-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

input[type="number"] {
  padding: 5px;
  background: #333;
  border: 1px solid #444;
  color: #fff;
  border-radius: 4px;
}

button {
  padding: 8px 16px;
  background: #4CAF50;
  border: none;
  color: white;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background: #45a049;
}

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

canvas {
  background: #2a2a2a;
  padding: 15px;
  border-radius: 10px;
}