.mc-contact-form {
    max-width: 500px;
    margin: 20px auto;
}

.mc-form-group {
    margin-bottom: 15px;
}

.mc-loader {
    display: none;
    margin: 15px 0;
    text-align: center;
}

.mc-loader .spinner {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(0,0,0,0.2);
    border-top-color: #333;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.mc-success {
    color: green;
    font-weight: 600;
}

.mc-error {
    color: red;
    font-weight: 600;
}

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