* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.container {
  background: white;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 600px;
  width: 100%;
  padding: 40px;
}

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

.header h1 {
  color: #333;
  font-size: 32px;
  margin-bottom: 10px;
}

.account-address {
  color: #666;
  font-size: 14px;
  word-break: break-all;
  background: #f5f5f5;
  padding: 10px;
  border-radius: 8px;
  font-family: monospace;
}

.loading {
  text-align: center;
  padding: 40px;
  color: #666;
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error {
  background: #fee;
  color: #c33;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

.health-display {
  display: none;
}

.health-display.show {
  display: block;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 30px 0;
}

.stat-card {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
}

.stat-label {
  color: #666;
  font-size: 14px;
  margin-bottom: 8px;
}

.stat-value {
  color: #333;
  font-size: 32px;
  font-weight: bold;
}

.health-indicator {
  margin: 30px 0;
  padding: 30px;
  border-radius: 12px;
  text-align: center;
}

.health-indicator h2 {
  font-size: 24px;
  margin-bottom: 15px;
}

.health-indicator p {
  font-size: 16px;
  line-height: 1.6;
}