body {
    background: #f8f9fa;
    font-family: 'Segoe UI', sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    padding: 3rem;
    text-align: center;
    max-width: 420px;
}

.error-icon {
    font-size: 3rem;
    color: #e74c3c;
    margin-bottom: 1rem;
}