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

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    padding: 20px;
}

.app-header {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.app-header h1 {
    color: #4a5568;
}

.account-info {
    color: #718096;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.info-grid, .balance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.info-item, .balance-item {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background: #f7fafc;
    border-radius: 5px;
}

.btn-primary {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
    font-size: 16px;
}

.btn-primary:hover {
    background: #5a6fd8;
}

.swap-section {
    margin: 15px 0;
    padding: 15px;
    background: #f7fafc;
    border-radius: 5px;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.btn-swap {
    background: #48bb78;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

.btn-swap:hover {
    background: #3da166;
}

.scenario-grid {
    display: grid;
    gap: 10px;
    margin-top: 15px;
}

.scenario-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: #f7fafc;
    border-radius: 5px;
}