:root {
  --bg: #1a1a1a;
  --text: #f0f0f0;
  --accent: #4CAF50;
  --danger: #f44336;
  --highlight: #FFC107;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

.container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.viz-container {
  position: relative;
  border: 2px solid var(--accent);
  border-radius: 8px;
  overflow: hidden;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem;
  background: #2a2a2a;
  border-radius: 8px;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.2s;
}

button:hover {
  transform: scale(1.05);
}

.params-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}

.param-item input {
  width: 100%;
  background: #333;
  border: 1px solid #444;
  color: white;
  padding: 4px;
}

.chart {
  height: 200px;
  background: #2a2a2a;
  margin-bottom: 1rem;
  border-radius: 8px;
}

.stats-container {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin: 1rem 0;
}

.stat-item {
  background: #2a2a2a;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  min-width: 120px;
  text-align: center;
}

@keyframes pulse {
  0% { r: 3; }
  50% { r: 5; }
  100% { r: 3; }
}

.bankrupt {
  stroke: var(--danger);
  animation: pulse 1s infinite;
}