body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: var(--card-background-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 90%;
    max-width: 400px;
}

h1 {
    color: #333;
    margin-bottom: 20px;
}

p {
    color: #555;
    margin-bottom: 20px;
}

.facebook-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.facebook-btn:hover {
    background-color: #166fe5;
}

.facebook-btn svg {
    width: 20px;
    height: 20px;
    margin-right: 10px;
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #f5c6cb;
    margin-bottom: 15px;
}