:root {
    --operator-bar-background-color: var(--container-background-color);
    --operator-bar-outline-color: var(--container-outline-color);
    --operator-bar-shadow-color: var(--content-background-color);
    --operator-bar-margin: var(--margin);

    --operator-bar-hide-button-width: var(--node-height);

    --operator-bar-search-bar-background-color: var(--content-background-color);

    --operator-bar-icon-margin: calc(var(--margin) / 2);

    --operator-bar-sep-border-color: var(--container-outline-color);
    --operator-bar-sep-hover-border-color: var(--default-color);

    --node-outline-color: var(--container-outline-color);
    --node-outline-font-size: var(--label-font-size);
    --node-outline-margin: var(--margin);

    --node-selected-outline-color: var(--default-color);
    --node-hover-outline-color: var(--default-color);
    --node-selected-outline-width: var(--hover-border-width);
    --node-hover-outline-width: var(--hover-border-width);

    --overview-title-hover-color: var(--lucency-bluish);

    --node-end-point-overlays-label-color: var(--container-outline-color);
    --node-end-point-label-display: "inline";
    --node-end-point-label-font-size: var(--label-font-size);

    --node-overview-background-color: var(--container-background-color);
    --node-overview-shadow-color: var(--content-background-color);
    --node-overview-width: 300px;
    --node-overview-container-max-height: 20vh;
    --node-overview-margin: var(--margin);
    --node-overview-outline-color: var(--container-outline-color);
    --node-overview-hover-outline-color: var(--default-color);
    --node-overview-item-input-background-color: var(
        --content-background-color
    );
    --node-overview-item-input-button-hover-background-color: var(
        --content-outline-color
    );
    --node-overview-item-input-outline-color: var(--content-outline-color);
    --node-overview-button-color: var(--default-color);
    --node-overview-button-outline-color: var(--content-outline-color);
    --node-overview-button-background-color: var(--lucency-reddish);
    --node-overview-button-hover-background-color: var(--lucency-red);

    --wicket-background-color: var(--container-background-color);
    --wicket-shadow-color: var(--content-background-color);
    --wicket-outline-color: var(--container-outline-color);
    --wicket-height: 50vh;
}

.node {
    outline: var(--border-width) solid var(--node-outline-color);
    flex-shrink: 0; /* make sure node will not be compressed */
    user-select: none; /* make sure node's text will not be selected */
    background-color: bisque;
    width: var(--node-width);
    height: var(--node-height);
    line-height: var(--node-height);
    text-align: center;
    border-radius: var(--radius);
    overflow: visible;
}

.node:hover {
    outline: var(--node-hover-outline-width) solid
        var(--node-hover-outline-color) !important;
}

.node-select-mode {
    outline: var(--node-selected-outline-width) solid
        var(--node-selected-outline-color);
}

.node-outline {
    font-size: var(--node-outline-font-size);
    text-align: left;
    position: absolute;
    left: 100%;
    margin-left: var(--node-outline-margin);
    pointer-events: none;
    user-select: none;
    word-wrap: break-word;
    white-space: nowrap;
    color: var(--node-outline-color);
}

.node-endpoint-label {
    font-size: var(--node-end-point-label-font-size);
    text-align: center;
    position: absolute;
    pointer-events: none;
    user-select: none;
    word-wrap: break-word;
    white-space: nowrap;
    color: var(--node-end-point-overlays-label-color);
}

.operator-bar-container {
    position: absolute;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    height: calc(100% - calc(2 * var(--operator-bar-margin)));
    margin: var(--operator-bar-margin);
    z-index: 7;
}

.operator-bar {
    touch-action: pan-y;
    backdrop-filter: var(--blur);
    background-color: var(--operator-bar-background-color);
    outline: var(--border-width) solid var(--operator-bar-outline-color);
    height: 100%;
    width: fit-content;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    overflow-y: auto;
    padding: var(--operator-bar-margin);
    gap: var(--operator-bar-margin);
    border-radius: var(--radius);
    user-select: none;
    box-shadow: var(--shadow) var(--operator-bar-shadow-color);
}

.operator-bar-hide-mode {
    overflow: hidden;
    width: 0;
    padding: 0;
}

.operator-bar-sep {
    display: grid;
    align-items: center;
    justify-content: center;
    grid-template-columns: 1fr auto;
    border-bottom: var(--border-width) solid
        var(--operator-bar-sep-border-color);
    width: 100%;
    padding-top: calc(var(--border-width));
    padding-bottom: calc(var(--border-width));
}

.operator-bar-sep:hover {
    border-color: var(--operator-bar-sep-hover-border-color);
    border-width: var(--hover-border-width);
    padding-bottom: 0;
    cursor: pointer;
}

.operator-bar-sep-title {
    text-align: left;
    width: auto;
}

.operator-bar-sep-switch {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: end;
    width: 20px;
}

/* inherit node */
.operator-bar-search-bar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    backdrop-filter: var(--blur);
    background-color: var(--operator-bar-search-bar-background-color);
}

.operator-bar-search-input {
    border-radius: var(--radius);
    border: none;
    outline: none;
    background-color: rgba(0, 0, 0, 0);
    width: 100%;
}

.operator-bar-search-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    margin: 0 var(--operator-bar-icon-margin) 0 var(--operator-bar-icon-margin);
}

.operator-bar-search-clear-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 15px;
    margin: 0 var(--operator-bar-icon-margin) 0 var(--operator-bar-icon-margin);
}

.operator-bar-search-clear-icon:hover {
    cursor: pointer;
}

.overview {
    outline: var(--border-width) solid var(--node-overview-outline-color);
    background-color: var(--node-overview-background-color);
    backdrop-filter: var(--blur);
    width: var(--node-overview-width);
    height: auto;
    position: absolute;
    display: flex;
    flex-direction: column;
    line-height: var(--node-height);
    border-radius: var(--radius);
    box-shadow: var(--shadow) var(--node-overview-shadow-color);
    z-index: 6;
}

.overview-args-container {
    max-height: var(--node-overview-container-max-height);
    overflow: auto;
    display: flex;
    flex-direction: column;
    margin: var(--operator-bar-margin);
    flex: 1;
    user-select: none;
}

.overview-title * {
    text-align: center;
    margin: var(--operator-bar-margin);
    font-size: large;
    font-weight: bold;
    user-select: none;
    cursor: pointer;
    white-space: pre-line;
}

.overview-title:hover * {
    color: var(--overview-title-hover-color);
}

.overview-id {
    text-align: center;
    user-select: none;
}

.overview-item {
    display: grid;
    grid-template-columns: auto;
    grid-template-rows: auto auto;
    margin: 2px 5% 2px 5%;
}

.overview-item-text {
    user-select: none;
    pointer-events: none;
}

.overview-item-input {
    border-radius: var(--radius);
    border: none;
    outline: var(--border-width) solid
        var(--node-overview-item-input-outline-color);
    backdrop-filter: var(--blur);
    background-color: var(--node-overview-item-input-background-color);
    width: 100%;
    margin: 0 auto;
}

.overview-item-input:hover {
    outline: var(--hover-border-width) solid
        var(--node-overview-hover-outline-color);
}

.overview-item-input-button {
    cursor: pointer;
}

.overview-item-input-button:hover {
    background-color: var(
        --node-overview-item-input-button-hover-background-color
    );
}

.overview-delete-button {
    font-size: medium;
    height: var(--node-height);
    width: 60%;
    color: var(--node-overview-button-color);
    border-radius: var(--radius);
    margin: 20px auto;
    user-select: none;
    border: none;
    outline: var(--border-width) solid var(--node-overview-button-outline-color);
    background-color: var(--node-overview-button-background-color);
    cursor: pointer;
}

.overview-delete-button:hover {
    background-color: var(--node-overview-button-hover-background-color);
}

.wicket {
    width: auto;
    height: var(--wicket-height);
    background-color: var(--wicket-background-color);
    backdrop-filter: var(--blur);
    outline: var(--border-width) solid var(--wicket-outline-color);
    box-shadow: var(--shadow) var(--wicket-shadow-color);
    z-index: 2;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: var(--radius);
    display: none;
    user-select: none;
    grid-template-rows: auto 1fr;
    gap: var(--margin);
    padding: var(--margin);
}

.wicket-text {
    width: calc(var(--node-width) + 2 * var(--margin));
    height: min-content;
    justify-self: center;
    text-align: center;
    font-size: large;
    font-weight: bold;
    user-select: none;
    grid-row: 1;
}

.wicket-node-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: var(--margin);
    overflow: auto;
    align-items: center;
    justify-content: flex-start;
    grid-row: 2;
    padding: var(--margin);
}

.wicket-add-node-mask {
    width: 100%;
    height: 100%;
    text-align: center;
    background-color: var(--sub-content-background-color);
    backdrop-filter: var(--blur);
}

.wicket-moving-node {
    color: rgba(0, 0, 0, 0);
    background-color: rgba(0, 0, 0, 0) !important;
    outline: var(--node-selected-outline-width) dashed
        var(--node-selected-outline-color);
}

.wicket-moving-node:hover {
    outline: var(--node-selected-outline-width) dashed
        var(--node-selected-outline-color);
}

.wicket-dragging-image {
    top: -999999px;
    position: absolute;
    text-align: center;
    border-radius: var(--radius);
    color: var(--default-color);
    background-color: var(--default-inverse-color);
    padding: var(--margin);
    border: var(--border-width) dashed var(--default-color);
}