:root {
    --model-switcher-height: 80px;
    --model-3d-block-height: calc(100% - var(--model-switcher-height) - var(--footer-height));
    --model-switcher-type-width: 25%;
    --model-switcher-type-width-wide: calc(100% / 3);
}

.model_3d_block {
    height: var(--model-3d-block-height);
    position: relative;
    width: 100%;
}

#modelContainer > canvas { cursor: grab; }
#modelContainer.is-dragging > canvas { cursor: grabbing; }

.model_3d_switcher_container {
    height: var(--model-switcher-height);
    justify-content: space-between;
    flex-direction: row;
    flex-wrap: wrap;
    display: flex;
    width: 100%;
    margin: 0;
}

.model_3d_switcher_container > .model_3d_switch_btn {
    border: none;
    padding: calc(var(--page-block-vertical-padding) / 2) 0;
    font-weight: var(--sub-header-text-font-weight);
    line-height: var(--sub-header-text-line-height);
    background-color: var(--background-color);
    width: var(--model-switcher-type-width);
    font-size: var(--usual-text-font-size);
    letter-spacing: var(--letter-spacing);
    border-inline-end: var(--nav-border);
    border-top: var(--nav-border);
    color: var(--text-main-color);
    text-transform: uppercase;
    text-align: center;
    cursor: pointer;
    margin: 0;
}

.model_3d_switcher_container > .model_3d_switch_btn.back,
.model_3d_switcher_container > .model_3d_switch_btn.next {
    display: none;
}

.model_3d_switcher_container > .model_3d_switch_btn:nth-child(6),
.model_3d_switcher_container > .model_3d_switch_btn:nth-child(7),
.model_3d_switcher_container > .model_3d_switch_btn:nth-child(8) {
    width: var(--model-switcher-type-width-wide);
}

.model_3d_switcher_container > .model_3d_switch_btn:nth-child(5),
.model_3d_switcher_container > .model_3d_switch_btn:nth-child(8),
.model_3d_switcher_container > .model_3d_switch_btn:last-child {
    border-inline-end: 0
}

.model_3d_switcher_container > .model_3d_switch_btn:hover,
.model_3d_switcher_container > .model_3d_switch_btn.active {
    font-weight: var(--header-text-font-weight);
}

.model_3d_empty_label {
    font-weight: var(--sub-header-text-font-weight);
    line-height: var(--header-text-line-height);
    font-size: var(--header-text-font-size);
    letter-spacing: var(--letter-spacing);
    text-align: center;
    width: 100%;
    margin: 0;
}

@media only screen and (max-width: 1440px) {
    :root {
        --model-switcher-height: 80px;
    }

    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(6),
    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(7),
    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(8) {
        width: var(--model-switcher-type-width-wide);
    }

    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(3),
    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(4),
    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(5) {
        width: var(--model-switcher-type-width);
    }

    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(5),
    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(8)
    .model_3d_switcher_container > .model_3d_switch_btn:last-child {
        border-inline-end: 0
    }
}

/* DISABLE STYLES */
@media only screen and (max-width: 960px) {
    :root {
        /*--model-3d-block-height: calc(100vh - 2 * var(--model-switcher-height) - var(--mobile-nav-height));*/
        --model-3d-block-height: 500px;
    }
}

@media only screen and (max-width: 680px) {
    :root {
        /*--model-3d-block-height: calc(100vh - 2 * var(--model-switcher-height) - 2 * var(--mobile-nav-height));*/
        --model-3d-block-height: 400px;
        --model-switcher-height: 35px;
    }

    .model_3d_switcher_container {
        overflow-x: scroll;
        flex-wrap: nowrap;
    }

    .model_3d_switcher_container::-webkit-scrollbar {
        height: 0;
        width: 0;
    }

    .model_3d_switcher_container > .model_3d_switch_btn {
        padding: calc(var(--page-block-vertical-padding) / 2) var(--page-block-vertical-padding);
        width: unset!important;
    }

    .model_3d_switcher_container > .model_3d_switch_btn:nth-child(5) {
        border-inline-end: var(--nav-border);
    }

    .model_3d_switcher_container > .model_3d_switch_btn.back,
    .model_3d_switcher_container > .model_3d_switch_btn.next {
        padding: calc(var(--page-block-vertical-padding) / 2);
        align-items: center;
        position: sticky;
        display: flex;
    }

    .model_3d_switcher_container > .model_3d_switch_btn.back {
        left: 0;
    }

    .model_3d_switcher_container > .model_3d_switch_btn.next {
        border-inline-start: var(--nav-border);
        right: 0;
    }

    .model_3d_switcher_container > .model_3d_switch_btn.back > .scroll_btn_icon {
        rotate: 180deg;
    }
}

/* Loading overlay and spinner while 3D model is loading */
#modelContainer[data-loading]::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(253, 253, 253, 0.75);
    backdrop-filter: blur(2px);
    z-index: 2;
}

#modelContainer[data-loading]::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 44px;
    height: 44px;
    margin: -22px 0 0 -22px;
    border: 5px solid var(--accient-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: modelSpin .8s linear infinite;
    z-index: 3;
}

@keyframes modelSpin {
    to { transform: rotate(360deg); }
}