/* Global Styles */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

#app {
    min-height: 100vh;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin: 0 0 0.5rem 0;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
    font-size: 1.2rem;
    margin: 0;
    opacity: 0.9;
    font-weight: 300;
}

main {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

/* Component Styles */
mfa-demo-app {
    display: block;
    padding: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    #app {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    mfa-demo-app {
        padding: 1rem;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 1rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.p-2 {
    padding: 1rem;
}

/* Loading Animation */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

/* Focus Styles for Accessibility */
button:focus,
input:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background: white;
    }

    header {
        color: black;
    }

    .btn {
        display: none;
    }
}