:root {
    --tcb-length-unit: 25px;

    --top-control-bar-border-color: var(--container-outline-color);
    --top-control-bar-background-color: var(--viewport-background-color);

    --tcb-button-min-width: calc(2 * var(--tcb-length-unit));
    --tcb-button-hover-background-color: var(--container-outline-color);

    --tcb-graph-name-input-hover-background-color: var(--content-outline-color);
    --tcb-graph-name-input-max-width: 300px;

    --tcb-graph-unsaved-text-background-color: var(--lucency-yellowish);
    --tcb-graph-unsaved-text-hover-background-color: var(
        --content-outline-color
    );

    --tcb-tool-bar-item-hover-background-color: var(--content-outline-color);

    --tcb-navigator-bar-mode-button-outline-color: var(--content-outline-color);
    --tcb-navigator-bar-mode-button-hover-background-color: var(
        --content-outline-color
    );
    --tcb-navigator-bar-mode-button-select-background-color: var(
        --lucency-bluish
    );
    --tcb-navigator-bar-mode-button-move-background-color: var(
        --lucency-greenish
    );
}

#top-control-bar {
    position: relative;
    width: 100%;
    height: auto;
    background-color: var(--top-control-bar-background-color);
    border-bottom: var(--border-width) solid var(--top-control-bar-border-color);
    display: grid;
    grid-template-rows: auto auto;
    grid-template-columns: auto 1fr auto;
    gap: var(--margin);
    padding: var(--margin);
}

.tcb-text {
    width: auto;
    display: flex;
    text-align: center;
    align-items: center;
    white-space: nowrap;
    user-select: none;
}

.tcb-pmos {
    display: flex;
    font-size: x-large;
    font-weight: bold;
    text-align: center;
    align-items: center;
    grid-row: 1/3;
    grid-column: 1;
    margin: var(--margin);
    user-select: none;
    cursor: pointer;
    text-decoration: var(--lucency-bluish) underline 4px;
}

.tcb-graph-info-bar {
    grid-row: 1;
    grid-column: 2;
    display: grid;
    gap: var(--margin);
    height: var(--tcb-length-unit);
    grid-template-columns: auto auto auto 1fr;
}

.tcb-graph-name-input {
    background-color: var(--top-control-bar-background-color);
    outline: none;
    border: none;
    border-radius: var(--radius);
    padding-left: var(--margin);
    padding-right: var(--margin);
    font-size: large;
    font-weight: bold;
    width: var(--tcb-length-unit);
}

.tcb-graph-name-input:hover {
    outline: var(--hover-border-width) solid var(--default-color);
    background-color: var(--tcb-graph-name-input-hover-background-color);
}

.tcb-framework-saved-text {
    font-size: small;
    align-self: flex-end;
}

.tcb-graph-saved-text {
    font-size: small;
    align-self: flex-end;
    color: var(--disabled-color);
}

.tcb-graph-unsaved-text {
    padding-left: var(--margin);
    padding-right: var(--margin);
    border-radius: var(--radius);
    background-color: var(--tcb-graph-unsaved-text-background-color);
    cursor: pointer;
}

.tcb-graph-unsaved-text:hover {
    outline: var(--hover-border-width) solid var(--default-color);
    background-color: var(--tcb-graph-unsaved-text-hover-background-color);
}

.tcb-tool-bar {
    grid-row: 1;
    grid-column: 3;
    display: flex;
    flex-direction: row;
    justify-self: flex-end;
    gap: var(--margin);
}

.tcb-tool-bar-item {
    width: var(--tcb-length-unit);
    height: var(--tcb-length-unit);
    padding: 2px;
    border-radius: var(--radius);
    cursor: pointer;
    user-select: none;
}

.tcb-tool-bar-item:hover {
    outline: var(--hover-border-width) solid var(--default-color);
    background-color: var(--tcb-tool-bar-item-hover-background-color);
}

.tcb-navigator-bar {
    grid-row: 2;
    grid-column: 3;
    display: flex;
    flex-direction: row;
    gap: var(--margin);
    margin-left: auto;
}

.tcb-navigator-bar-mode-button {
    display: flex;
    flex-direction: row;
    height: 100%;
    align-items: center;
    justify-content: center;
    padding: 0;
    gap: var(--margin);
    border-radius: var(--radius);
    cursor: pointer;
}

.tcb-navigator-bar-mode-button:hover {
    outline: var(--hover-border-width) solid var(--default-color);
    background-color: var(
        --tcb-navigator-bar-mode-button-hover-background-color
    );
}

.tcb-navigator-bar-mode-button-select {
    background-color: var(
        --tcb-navigator-bar-mode-button-select-background-color
    );
}

.tcb-navigator-bar-mode-button-move {
    background-color: var(
        --tcb-navigator-bar-mode-button-move-background-color
    );
}

.tcb-navigator-bar-mode-icon {
    height: var(--tcb-length-unit);
}

.tcb-menu-bar {
    display: flex;
    flex-direction: row;
    grid-row: 2;
    grid-column: 2;
}

.top-control-bar-menu-button {
    display: flex;
    min-width: var(--tcb-button-min-width);
    height: var(--tcb-length-unit);
    border-radius: var(--radius);
    text-align: center;
    align-items: center;
    user-select: none;
    padding-left: var(--margin);
    padding-right: var(--margin);
}

.top-control-bar-menu-button:hover {
    background-color: var(--tcb-button-hover-background-color);
}

.top-control-bar-menu-button-selected {
    background-color: var(--tcb-button-hover-background-color);
}