xyflow/packages/system/src/styles/init.css

/* these are the necessary styles for React/Svelte Flow, they get used by base.css and style.css */

.xy-flow {
  direction: ltr;

  --xy-edge-stroke-default: #b1b1b7;
  --xy-edge-stroke-width-default: 1;
  --xy-edge-stroke-selected-default: #555;

  --xy-connectionline-stroke-default: #b1b1b7;
  --xy-connectionline-stroke-width-default: 1;

  --xy-attribution-background-color-default: rgba(255, 255, 255, 0.5);

  --xy-minimap-background-color-default: #fff;
  --xy-minimap-mask-background-color-default: rgba(240, 240, 240, 0.6);
  --xy-minimap-mask-stroke-color-default: transparent;
  --xy-minimap-mask-stroke-width-default: 1;
  --xy-minimap-node-background-color-default: #e2e2e2;
  --xy-minimap-node-stroke-color-default: transparent;
  --xy-minimap-node-stroke-width-default: 2;

  --xy-background-color-default: transparent;
  --xy-background-pattern-dots-color-default: #91919a;
  --xy-background-pattern-lines-color-default: #eee;
  --xy-background-pattern-cross-color-default: #e2e2e2;
}

.xy-flow.dark {
  --xy-edge-stroke-default: #3e3e3e;
  --xy-edge-stroke-width-default: 1;
  --xy-edge-stroke-selected-default: #727272;

  --xy-connectionline-stroke-default: #b1b1b7;
  --xy-connectionline-stroke-width-default: 1;

  --xy-attribution-background-color-default: rgba(150, 150, 150, 0.25);

  --xy-minimap-background-color-default: #141414;
  --xy-minimap-mask-background-color-default: rgba(60, 60, 60, 0.6);
  --xy-minimap-mask-stroke-color-default: transparent;
  --xy-minimap-mask-stroke-width-default: 1;
  --xy-minimap-node-background-color-default: #2b2b2b;
  --xy-minimap-node-stroke-color-default: transparent;
  --xy-minimap-node-stroke-width-default: 2;

  --xy-background-color-default: #141414;
  --xy-background-pattern-dots-color-default: #777;
  --xy-background-pattern-lines-color-default: #777;
  --xy-background-pattern-cross-color-default: #777;
}

.xy-flow {
  background-color: var(--xy-background-color, var(--xy-background-color-default));
}

.xy-flow__background {
  background-color: var(--xy-background-color-props, var(--xy-background-color, var(--xy-background-color-default)));
}

.xy-flow__container {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.xy-flow__pane {
  z-index: 1;

  &.draggable {
    cursor: grab;
  }

  &.dragging {
    cursor: grabbing;
  }

  &.selection {
    cursor: pointer;
  }
}

.xy-flow__viewport {
  transform-origin: 0 0;
  z-index: 2;
  pointer-events: none;
}

.xy-flow__renderer {
  z-index: 4;
}

.xy-flow__selection {
  z-index: 6;
}

.xy-flow__nodesselection-rect:focus,
.xy-flow__nodesselection-rect:focus-visible {
  outline: none;
}

.xy-flow__edge-path {
  stroke: var(--xy-edge-stroke, var(--xy-edge-stroke-default));
  stroke-width: var(--xy-edge-stroke-width, var(--xy-edge-stroke-width-default));
  fill: none;
}

.xy-flow__connection-path {
  stroke: var(--xy-connectionline-stroke, var(--xy-connectionline-stroke-default));
  stroke-width: var(--xy-connectionline-stroke-width, var(--xy-connectionline-stroke-width-default));
  fill: none;
}

.xy-flow .xy-flow__edges {
  position: absolute;

  svg {
    overflow: visible;
    position: absolute;
    pointer-events: none;
  }
}

.xy-flow__edge {
  pointer-events: visibleStroke;

  &.selectable {
    cursor: pointer;
  }

  &.animated path {
    stroke-dasharray: 5;
    animation: dashdraw 0.5s linear infinite;
  }

  &.animated path.xy-flow__edge-interaction {
    stroke-dasharray: none;
    animation: none;
  }

  &.inactive {
    pointer-events: none;
  }

  &.selected,
  &:focus,
  &:focus-visible {
    outline: none;
  }

  &.selected .xy-flow__edge-path,
  &.selectable:focus .xy-flow__edge-path,
  &.selectable:focus-visible .xy-flow__edge-path {
    stroke: var(--xy-edge-stroke-selected, var(--xy-edge-stroke-selected-default));
  }

  &-textwrapper {
    pointer-events: all;
  }

  .xy-flow__edge-text {
    pointer-events: none;
    user-select: none;
  }
}

/* Arrowhead marker styles - use CSS custom properties as default */
.xy-flow__arrowhead polyline {
  stroke: var(--xy-edge-stroke, var(--xy-edge-stroke-default));
}

.xy-flow__arrowhead polyline.arrowclosed {
  fill: var(--xy-edge-stroke, var(--xy-edge-stroke-default));
}

.xy-flow__connection {
  pointer-events: none;

  .animated {
    stroke-dasharray: 5;
    animation: dashdraw 0.5s linear infinite;
  }
}

svg.xy-flow__connectionline {
  z-index: 1001;
  overflow: visible;
  position: absolute;
}

.xy-flow__nodes {
  pointer-events: none;
  transform-origin: 0 0;
}

.xy-flow__node {
  position: absolute;
  user-select: none;
  pointer-events: all;
  transform-origin: 0 0;
  box-sizing: border-box;
  cursor: default;

  &.selectable {
    cursor: pointer;
  }

  &.draggable {
    cursor: grab;
    pointer-events: all;

    &.dragging {
      cursor: grabbing;
    }
  }
}

.xy-flow__nodesselection {
  z-index: 3;
  transform-origin: left top;
  pointer-events: none;

  &-rect {
    position: absolute;
    pointer-events: all;
    cursor: grab;
  }
}

.xy-flow__handle {
  position: absolute;
  pointer-events: none;
  min-width: 5px;
  min-height: 5px;

  &.connectingfrom {
    pointer-events: all;
  }

  &.connectionindicator {
    pointer-events: all;
    cursor: crosshair;
  }

  &-bottom {
    top: auto;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 50%);
  }

  &-top {
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  &-left {
    top: 50%;
    left: 0;
    transform: translate(-50%, -50%);
  }

  &-right {
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
  }
}

.xy-flow__edgeupdater {
  cursor: move;
  pointer-events: all;
}

.xy-flow__pane.selection .xy-flow__panel {
  pointer-events: none;
}

.xy-flow__panel {
  position: absolute;
  z-index: 5;
  margin: 15px;

  &.top {
    top: 0;
  }

  &.bottom {
    bottom: 0;
  }

  &.top,
  &.bottom {
    &.center {
      left: 50%;
      transform: translateX(-15px) translateX(-50%);
    }
  }

  &.left {
    left: 0;
  }

  &.right {
    right: 0;
  }

  &.left,
  &.right {
    &.center {
      top: 50%;
      transform: translateY(-15px) translateY(-50%);
    }
  }
}

.xy-flow__attribution {
  font-size: 10px;
  background: var(--xy-attribution-background-color, var(--xy-attribution-background-color-default));
  padding: 2px 3px;
  margin: 0;

  a {
    text-decoration: none;
    color: #999;
  }
}

@keyframes dashdraw {
  from {
    stroke-dashoffset: 10;
  }
}

.xy-flow__edgelabel-renderer {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  user-select: none;
  left: 0;
  top: 0;
}

.xy-flow__viewport-portal {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  user-select: none;
}

.xy-flow__minimap {
  background: var(
    --xy-minimap-background-color-props,
    var(--xy-minimap-background-color, var(--xy-minimap-background-color-default))
  );

  &-svg {
    display: block;
  }

  &-mask {
    fill: var(
      --xy-minimap-mask-background-color-props,
      var(--xy-minimap-mask-background-color, var(--xy-minimap-mask-background-color-default))
    );
    stroke: var(
      --xy-minimap-mask-stroke-color-props,
      var(--xy-minimap-mask-stroke-color, var(--xy-minimap-mask-stroke-color-default))
    );
    stroke-width: var(
      --xy-minimap-mask-stroke-width-props,
      var(--xy-minimap-mask-stroke-width, var(--xy-minimap-mask-stroke-width-default))
    );
  }

  &-node {
    fill: var(
      --xy-minimap-node-background-color-props,
      var(--xy-minimap-node-background-color, var(--xy-minimap-node-background-color-default))
    );
    stroke: var(
      --xy-minimap-node-stroke-color-props,
      var(--xy-minimap-node-stroke-color, var(--xy-minimap-node-stroke-color-default))
    );
    stroke-width: var(
      --xy-minimap-node-stroke-width-props,
      var(--xy-minimap-node-stroke-width, var(--xy-minimap-node-stroke-width-default))
    );
  }
}

.xy-flow__background {
  pointer-events: none;
  z-index: -1;
}

.xy-flow__background-pattern {
  &.dots {
    fill: var(
      --xy-background-pattern-color-props,
      var(--xy-background-pattern-color, var(--xy-background-pattern-dots-color-default))
    );
  }

  &.lines {
    stroke: var(
      --xy-background-pattern-color-props,
      var(--xy-background-pattern-color, var(--xy-background-pattern-lines-color-default))
    );
  }

  &.cross {
    stroke: var(
      --xy-background-pattern-color-props,
      var(--xy-background-pattern-color, var(--xy-background-pattern-cross-color-default))
    );
  }
}

.xy-flow__controls {
  display: flex;
  flex-direction: column;

  &.horizontal {
    flex-direction: row;
  }

  &-button {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 26px;
    width: 26px;
    padding: 4px;

    svg {
      width: 100%;
      max-width: 12px;
      max-height: 12px;
      fill: currentColor;
    }
  }
}