body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f7fa;
}
.container {
    background: white;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}
.header {
    text-align: center;
    margin-bottom: 32px;
}
.header h1 {
    color: #1a202c;
    margin-bottom: 8px;
}
.header p {
    color: #718096;
}
.card {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    background: #f8fafc;
}
.balance {
    font-size: 32px;
    font-weight: bold;
    color: #2d3748;
    margin: 16px 0;
}
.label {
    font-size: 14px;
    color: #718096;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.button {
    background: #4299e1;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    width: 100%;
    margin-top: 16px;
}
.button:hover:not(:disabled) {
    background: #3182ce;
}
.button:disabled {
    background: #a0aec0;
    cursor: not-allowed;
}
.connect-button {
    background: #48bb78;
}
.connect-button:hover {
    background: #38a169;
}
.address {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    background: #edf2f7;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    word-break: break-all;
}
.loading {
    opacity: 0.7;
}
.error {
    color: #e53e3e;
    background: #fed7d7;
    padding: 12px;
    border-radius: 6px;
    margin: 16px 0;
}
.success {
    color: #38a169;
    background: #c6f6d5;
    padding: 12px;
    border-radius: 6px;
    margin: 16px 0;
}
.info {
    color: #3182ce;
    background: #e6f3ff;
    padding: 12px;
    border-radius: 6px;
    margin: 16px 0;
}
.network-status {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    background: #68d391;
    color: white;
    display: inline-block;
    margin-top: 8px;
}
.hidden {
    display: none;
}