body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  margin: 0;
  padding: 20px;
  background: #f5f5f5;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.header {
  text-align: center;
  margin-bottom: 30px;
}

.upload-section {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  text-align: center;
  margin-bottom: 20px;
}

.upload-button {
  background: #4CAF50;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.3s;
}

.upload-button:hover {
  background: #45a049;
}

.plots-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, 1fr);
}

.plot-container {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.summary-stats {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin-bottom: 20px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-item {
  padding: 15px;
  background: #f8f9fa;
  border-radius: 4px;
  text-align: center;
}

.stat-label {
  font-size: 14px;
  color: #666;
  margin-bottom: 5px;
}

.stat-value {
  font-size: 18px;
  font-weight: bold;
  color: #333;
}

@media (max-width: 1200px) {
  .plots-grid {
      grid-template-columns: 1fr;
  }
}