:root {
    --chat-gutter: 2rem;
    --chat-top-space: 4rem;
}

.chat-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bkk24-grey--60);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease;
    z-index: 99998;
}

.chat-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.chat-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--bkk24-grey);
    color: var(--bkk24-grey--dark);
    box-sizing: border-box;
    transition: right 0.5s ease;
    z-index: 99999;
}

@media (min-width: 769px) {
    .chat-overlay {
        width: 75%;
    }
}
@media (min-width: 992px) {
    .chat-overlay {
        width: 66%;
        padding: var(--chat-gutter);
    }
}
@media (min-width: 1500px) {
    .chat-overlay {
        width: 50%;
        padding: var(--chat-gutter);
    }
}

.chat-overlay.show {
    right: -1px;
}

.close-btn {
    color: var(--bkk24-white);
    line-height: 38px;
    border-width: 3px;
    border-style: solid;
    border-color: inherit;
    border-radius: 100%;
    width: 43px;
    height: 43px;
    text-align: center;
    box-sizing: border-box;
    cursor: pointer;
    position: absolute;
    right: calc(var(--chat-gutter)/2);
    top: calc(var(--chat-gutter)/2);
    font-weight: 500;
}
.close-btn:hover {
    color: var(--bkk24-red--dark);
    border-color: var(--bkk24-red--dark);
}
@media (min-width: 992px) {
    .close-btn {
        right: var(--chat-gutter);
        top: var(--chat-gutter);
    }
}


.chat-iframe--wrapper {
    padding: var(--chat-top-space) var(--chat-gutter) var(--chat-gutter);
    height: 100%;
}

.chat-iframe {
    position: relative;
    height: 100%;
    width: 100%;
    border: 1px solid var(--bkk24-grey);
    border-radius: 1rem;
}

.chat-iframe-footer {
    font-size: 0.8rem;
    text-align: center;
    margin: 0.5rem 0;
}
.chat-iframe-footer a {
    color: var(--bkk24-white);
}
.chat-iframe-footer a:hover {
    color: var(--bkk24-red--dark);
}