body {
  margin: 0;
  padding: 2rem;
  font-family: 'Segoe UI', system-ui;
  background: #f0f2f5;
  color: #1a1a1a;
}

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

.token-params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.token-card {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.input-group {
  margin: 1rem 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input[type="number"] {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 1rem;
}

.exchange-results {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.result-card, .conversion-card {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.price-display {
  font-size: 1.2rem;
  font-weight: bold;
  color: #2c3e50;
}

.rate-display {
  font-size: 1.5rem;
  font-weight: bold;
  color: #27ae60;
  text-align: center;
  padding: 1rem 0;
}

.conversion-card .result-display {
  font-size: 1.2rem;
  font-weight: bold;
  color: #2980b9;
  margin-top: 1rem;
  text-align: center;
}

h2, h3 {
  margin-top: 0;
  color: #2c3e50;
}