#mts-popup {
    position: fixed;
    bottom: 0;
    right: 0;
    background: #fff;
    border: 1px solid #ee403d;
    padding: 15px;
    z-index: 9999;
    margin: 1em;
    max-width: 300px;
}

#mts-popup h3 {
    margin-top: 0;
}

#mts-popup p {
    line-height: 24px;
    margin: 1em 0;
    font-size: 16px;
}

#mts-popup-form input[type="email"] {
    border: 1px solid #ee403d;
    padding: 5px;
    margin-top: 10px;
    width: 100%;
    box-sizing: border-box;
    color: #ee403d;
    font-family: gt--mono, sans-serif;
}

#mts-popup-form button {
    font-family: gt--mono, sans-serif;
    background-color: var(--theme-col);
    padding: 5px 20px;
    color: white;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: none;
    width: 100%;
}

#mts-popup-form button:hover {
    cursor: pointer;
}

#mts-popup-message {
    margin-top: 10px;
}

#mts-popup-close {
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
    width: 24px;
    height: 24px;
    color: #ee403d;
}

#mts-popup-loading {
    display: none;
    margin-left: 5px;
    vertical-align: middle;
}

#mts-popup-loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid white;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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