body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    text-align: center;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    padding: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.lead {
    font-size: 1.25rem;
    color: #7f8c8d;
    margin-bottom: 2rem;
}

.auth-section {
    margin: 2rem 0;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.code-display {
    font-size: 3rem;
    font-weight: bold;
    letter-spacing: 0.5rem;
    color: #2c3e50;
    margin: 1.5rem 0;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    border: 2px dashed #ddd;
}

.timer {
    margin-top: 1.5rem;
    padding: 0.75rem;
    background: #fff3cd;
    border-radius: 6px;
    color: #856404;
    font-weight: 500;
}

.signature {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #ecf0f1;
    color: #95a5a6;
}