:root {
  --bg: #1a1a1a;
  --text: #f0f0f0;
  --accent: #4CAF50;
  --danger: #f44336;
  --highlight: #FFC107;
  --panel-bg: #2a2a2a;
  --panel-border: #444;
}

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

header {
  text-align: center;
  margin-bottom: 1rem;
}

.container {
  display: grid;
  grid-template-columns: 1fr 350px;
  grid-template-rows: auto auto;
  gap: 1rem;
  max-width: 1400px;
  margin: 0 auto;
}

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

.charts-container {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(3, 150px);
  gap: 0.5rem;
}

.chart {
  background: var(--panel-bg);
  border-radius: 8px;
  padding: 0.5rem;
  overflow: hidden;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--panel-bg);
  border-radius: 8px;
  padding: 1rem;
}

.control-buttons {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  flex: 1;
}

button:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

button.danger {
  background: var(--danger);
}

.param-group {
  margin-bottom: 0.5rem;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  overflow: hidden;
}

.param-group-title {
  margin: 0;
  padding: 0.5rem;
  background: rgba(255,255,255,0.1);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: bold;
}

.param-group-title:hover {
  background: rgba(255,255,255,0.15);
}

.param-group-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  padding: 0.5rem;
}

.param-item {
  font-size: 0.8rem;
}

.param-item label {
  display: block;
  margin-bottom: 2px;
}

.param-item input {
  width: 100%;
  background: #333;
  border: 1px solid #444;
  color: white;
  padding: 4px;
  border-radius: 3px;
}

.param-item input[type="checkbox"] {
  width: auto;
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.5rem;
  margin: 1rem 0;
}

.stat-item {
  background: var(--panel-bg);
  padding: 0.5rem;
  border-radius: 4px;
  text-align: center;
}

.stat-label {
  font-size: 0.7rem;
  opacity: 0.8;
  margin-bottom: 2px;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: bold;
}

#tooltip {
  position: absolute;
  background: rgba(0,0,0,0.8);
  color: white;
  padding: 8px;
  border-radius: 4px;
  pointer-events: none;
  z-index: 1000;
  display: none;
  font-size: 0.8rem;
  max-width: 200px;
}

.bankrupt {
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% { r: 3; opacity: 0.7; }
  50% { r: 5; opacity: 1; }
  100% { r: 3; opacity: 0.7; }
}

.tooltip {
  display: inline-block;
  width: 16px;
  height: 16px;
  line-height: 16px;
  text-align: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  margin-left: 5px;
  font-size: 10px;
  cursor: help;
}

.tooltip:hover {
  background: rgba(255,255,255,0.3);
}

.line {
  stroke-linejoin: round;
  stroke-linecap: round;
}

/* Responsive adjustments */
@media (max-width: 1000px) {
  .container {
    grid-template-columns: 1fr;
  }
  
  .stats-container {
    grid-template-columns: repeat(3, 1fr);
  }
}