:root {
    --dgl-area-border: #ccc;
    --dgl-area-background: transparent;

    --dgl-node-border-radius: 10px;
    --dgl-node-padding: 12px;
    --dgl-node-background: #82878d;
    --dgl-node-selected: #4a90e4;
    --dgl-node-text: #fff;

    --dgl-control-text: #000;
    --dgl-control-background: var(--dgl-node-text);
    --dgl-control-border: var(--dgl-node-text);

    --dgl-socket-size: 15px;
    --dgl-connection-width: 4px;
    --dgl-connection-color: #a6aeb4;
}

.dgl-editor {
    background-color: var(--dgl-area-background);
    border: 1px solid var(--dgl-area-border);
    border-radius: 3px;
    position: relative;
    margin: 1em 0;
    overflow: hidden;
}

.dgl-editor:focus, .dgl-editor:focus-within {
    border-color: var(--dgl-node-selected);
    outline: none;
}

@property --dgl-area-scale {
    syntax: "<number>";
    initial-value: 1;
    inherits: true;
}

.dgl-area {
    transform-origin: 0px 0px;
    width: 100%;
    height: 100%;
    --dgl-area-offset-x: 0px;
    --dgl-area-offset-y: 0px;
    --dgl-area-scale: 1;
    transform: translate(var(--dgl-area-offset-x), var(--dgl-area-offset-y)) scale(var(--dgl-area-scale));
}

.dgl-editor.smooth .dgl-area {
    transition: transform 0.1s;
}

.dgl-node.dgl-selected:not(.dgl-socket) {
    background-color: color-mix(in srgb, var(--dgl-node-selected) 85%, transparent);
}

.dgl-node {
    background-color: color-mix(in srgb, var(--dgl-node-background) 85%, transparent);
    color: var(--dgl-node-text);
    border-radius: var(--dgl-node-border-radius);
    font-size: 1em;
    font-family: sans-serif;
    padding: var(--dgl-node-padding);
    width: fit-content;
    display: flex;
    flex-flow: column;
    gap: var(--dgl-node-padding);
    cursor: pointer;
    user-select: none;
    border: 1px solid var(--dgl-node-text);
    position: absolute;
}

.dgl-socket:hover {
    outline: 3px solid var(--dgl-node-text);
}

.dgl-socket {
    width: var(--dgl-socket-size);
    height: var(--dgl-socket-size);
    border-radius: 100%;
    outline: 1px solid var(--dgl-node-text);
    background-color: var(--dgl-node-background);
}

.dgl-rerouter.dgl-selected {
    outline-color: var(--dgl-node-selected);
    border-color: var(--dgl-node-selected);
}

.dgl-rerouter {
    padding: 0;
}

.dgl-connection {
    overflow: visible;
    position: absolute;
    left: 0;
    right: 0;
}
.dgl-connection path {
    stroke: var(--dgl-connection-color);
    stroke-width: var( --dgl-connection-width);
    fill: none;
}

.dgl-title {
    font-weight: bold;
    border-bottom: 1px solid var(--dgl-node-text);
    text-align: center;
    padding: var(--dgl-node-padding);
    margin: calc(-1 * var(--dgl-node-padding));
    margin-bottom: 0;
    border-radius: var(--dgl-node-border-radius) var(--dgl-node-border-radius) 0 0;
}

.dgl-input, .dgl-output {
    display: flex;
    gap: var(--dgl-node-padding);
    position: relative;
    align-items: center;
}

.dgl-input-label {
    margin-right: var(--dgl-node-padding);
    flex-grow: 1;
}

.dgl-output {
    justify-content: end;
}


.dgl-input .dgl-socket {
    position: absolute;
    left: calc(-1 * var(--dgl-node-padding) - var(--dgl-socket-size) / 2);
}

.dgl-output .dgl-socket {
    position: absolute;
    right: calc(-1 * var(--dgl-node-padding) - var(--dgl-socket-size) / 2);
}

.dgl-control {
    width: 10ch;
    background: var(--dgl-control-background);
    border: 1px solid var(--dgl-control-border);
    color: var(--dgl-control-text);
    border-radius: 3px;
    padding: 3px;
    vertical-align: middle;
    box-sizing: content-box;
}

.dgl-control-parent {
    width: 100%;
    display: flex;
}
.dgl-column {
    display: flex;
    flex-flow: column;
}

ul.dgl-menu, ul.dgl-submenu {
    background: var(--dgl-node-background);
    list-style: none;
    padding: 0;
    margin: 0;
    flex-flow: column;
    gap: 0;
    font-family: sans-serif;
    color: var(--dgl-node-text);
    border-radius: var(--dgl-node-border-radius);
    border: 1px solid var(--dgl-node-text);
    min-width: 16ch;
    z-index: 100;
}

ul.dgl-menu {
    display: flex;
    position: fixed;
    width: fit-content;
}

ul.dgl-submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 150px;
}

.dgl-menu-item {
    padding: var(--dgl-node-padding);
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
}

.dgl-menu-item:first-child {
    border-top-left-radius: var(--dgl-node-border-radius);
    border-top-right-radius: var(--dgl-node-border-radius);
}
.dgl-menu-item:last-child {
    border-bottom-left-radius: var(--dgl-node-border-radius);
    border-bottom-right-radius: var(--dgl-node-border-radius);
}
.dgl-menu-item:hover {
    background: var(--dgl-node-selected);
}

.dgl-menu-item:hover > .dgl-submenu,
.dgl-submenu:hover {
    display: flex;
}

.dgl-submenu-label::after {
    content: '▶';
    font-size: 0.8em;
    float: right;
    margin-left: var(--dgl-node-padding);
    opacity: 0.7;
}