Flow/browser/vue-flow/src/assets/default-theme.css

:root {
  --header-background: #113244;
  --header-color: #fff;
  --background: #f4f4f4;
  --background-transparent: rgba(240, 240, 240, 0.9);
  --background-secondary: rgba(208, 208, 208, 1);
  --background-tertiary: rgba(188, 188, 188, 1);
  --normal: #333;
  --normal-secondary: #999;
  --primary: #5060a0;
  --primary-darker: #405090;
  --primary-lighter: #6080b0;
  --primary-inverse: #fff;
  --secondary: #666;
  --secondary-inverse: #eee;
  --node-label: #fff;
  --node-socket: #444;
  --node-socket--withvalue: #44f;
  --link-hover: #f00;
  --selector-background: rgba(0, 0, 200, 0.1);
  --selector-color: var(--primary);
  --transition-speed-fast: 0.2s;
  --transition-speed: 0.4s;
  --transition-speed-slow: 0.8s;
  --node-selection: rgba(0, 0, 155, 1);
  --border-color: rgba(50, 50, 50, 0.3);
  --border-color-lighter: rgba(150, 150, 150, 0.17);
}

.vertical_sep {
  flex-basis: 1px;
  width: 1px;
  height: 30px;
  background: var(--primary);
}

.primary {
  color: var(--primary);
}

.primary-inverse {
  position: relative;
  background: var(--primary) !important;
  color: var(--primary-inverse) !important;
}

a {
  color: var(--primary);
  text-decoration: none;
}

button.active:hover::after,
.primary-inverse:hover::after {
  content: " ";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transition: all var(--transition-speed);
  opacity: 0.2;
  background: #000;
}

.secondary {
  color: var(--secondary);
}

.secondary-inverse {
  background: var(--secondary);
  color: var(--secondary-inverse);
}

button {
  color: inherit;
}

button.active {
  background: var(--primary);
  color: var(--primary-inverse);
}

.hover {
  position: relative;
}

button::after,
.hover::after {
  background: var(--normal);
  opacity: 0;
  transition: all var(--transition-speed);
}

button:hover::after,
.hover:hover::after {
  opacity: 0.1;
}

button:active,
.hover:active {
  text-shadow: 0 1px 1px var(--background);
  box-shadow: inset 0 1px 3px 0 rgba(0, 0, 0, 0.3);
}

button:active::after,
.hover:active::after {
  opacity: 0.2;
}

.content-input {
  word-wrap: break-word;
  overflow: hidden;
}

.content-input,
textarea,
input {
  padding: 20px;
  outline: none;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-speed);
}

/* only resize textarea vertical */
textarea {
  display: block;
  resize: vertical;
  height: min-content;
}

input::placeholder {
  opacity: 0.4;
}

.flow-main h1,
.flow-main h2,
.flow-main h3,
.flow-main h4 {
  font-weight: bold;
  color: var(--normal);
}

.app-header {
  display: flex;
  align-items: center;
  color: var(--header-color);
  background: var(--header-background);
  box-shadow: 0 2px 2px rgba(0, 0, 0, 0.2);
  overflow: visible;
  z-index: 10;
  transition: all var(--transition-speed);
}

.app-info {
  color: var(--normal);
}

.app-watermark {
  color: black;
  opacity: 0.02;
}

.app-flow-container {
  background: var(--background);
  transition: all var(--transition-speed);
}

.flow-panel__container {
  background: var(--background-secondary) !important;
}

/* Flow Funcs PANEL */
.flow-funcs__control {
  border-bottom: solid 1px var(--primary);
}

.flow-funcs__group {
  background: var(--background-tertiary);
}

.flow-funcs__search input {
  color: var(--normal);
  border: none;
  border-bottom: solid 1px var(--border-color-lighter);
}

.flow-funcs__src {
  background: #777;
  color: var(--node-label);
  text-shadow: 0 0 14px #000, 0 0 4px #000;
}

.flow-funcs__src b {
  text-shadow: 0 0 14px #000, 0 0 4px #000;
}

.flow-funcs__container .flow-funcs__header {
  color: var(--normal);
}

.hx-toggle-arrow {
  color: var(--normal-secondary);
}

.hx-toggle-arrow.active {
  color: var(--primary);
}

.flow-funcs__inner {
  display: flex;
  flex: 1;
  flex-flow: column;
  justify-content: center;
}

.flow-funcs__inner .hx-collapsible {
  transition: all var(--transition-speed);

  /*border: none !important;*/
}

.hx-collapsible__header {
  transition: all var(--transition-speed);
}

.flow-funcs__container .item {
  color: var(--normal) !important;
  border: none !important;
}

.flow-funcs__control .item {
  color: var(--normal) !important;
}

.flow-container__control button {
  color: var(--normal);
}

.flow-container__info {
  color: var(--normal);
}

/*
 * FLOW manager
 */
.flow-selector {
  /* TODO: theme */
  stroke: var(--selector-color);
  fill: var(--selector-background);
}

/*
 * LINKS
 */
.flow-link__visible {
  opacity: 1;
  stroke: var(--normal);
}

.flow-view:not(.activity)
.flow-link:not(.flow-link--pointer):hover
.flow-link__visible {
  stroke: var(--link-hover);
}

.flow-link__head {
  fill: var(--normal) !important;
}

/*
 * TRIGGERS
 */
.flow-trigger-link__visible {
  opacity: 0.5;
  stroke: var(--normal);
}

.flow-view:not(.activity)
.flow-trigger-link:not(.flow-trigger-link--pointer):hover
.flow-trigger-link__visible {
  stroke: var(--link-hover);
}

/*
 * NODES
 */
.flow-node {
  /*filter: url(#highlight-border);*/
}

.flow-node__label {
  font-family: RobotoMono, monospace;
  letter-spacing: -0.05em;
  font-size: 14px;
  fill: var(--node-label);
}

.flow-node__selection {
  transition: all var(--transition-speed);
}

.flow-node--selected .flow-node__selection {
  stroke: var(--primary);
}

.flow-node--dragging .flow-node__body,
.flow-view:not(.activity) .flow-node:hover .flow-node__body {
  stroke-width: 1.5;
  stroke: var(--normal);
}

.flow-node__socket {
  fill: var(--node-socket);
  stroke: var(--node-socket);
}

.flow-linking.flow-node__socket--match,
.flow-node__socket.flow-node__socket--match {
  stroke: #2f2 !important;
  fill: #2f2 !important;
}

.flow-node__socket-detail {
  font-size: 12px;
  font-weight: 100;
  fill: var(--normal);
}

.flow-node__socket-detail--background {
  fill: rgba(230, 230, 230, 0.7);
}

.flow-node__trigger {
  fill: var(--node-socket);
  stroke: var(--node-socket);
}

.flow-node__trigger--match {
  stroke: #2f2 !important;
  fill: #2f2 !important;
}

/*
 * NODE ACTIVITY
 */
.flow-node__activity {
  fill: white;

  /* fill: var(--background-secondary); */
}

.flow-node__activity-icon > * {
  stroke: var(--normal);
}

.flow-node__activity-time {
  fill: var(--normal);
}

/*
 * HX-MODAL
 */
.hx-modal__container {
  background: var(--background-transparent);
  color: var(--normal);
  width: 70vw !important;
  height: 80vh;
  display: flex;
  flex-flow: column;
  overflow: hidden;
}

.hx-modal__header {
  border-bottom: solid 1px var(--border-color);
  flex-shrink: 0;
  margin-bottom: 16px;
}

.hx-modal__body {
  overflow-y: auto;
  flex-grow: 1;
  margin: 0;
  padding: 0 20px !important;
  padding: 20px;
}

.hx-modal__footer {
  margin-top: 16px;
  flex-shrink: 0;
}

/*
 * CHAT
 */
.flow-chat {
  background: var(--background-secondary);
  color: var(--normal);
}

.flow-chat__area {
  border-left: solid 1px var(--border-color);
}

.flow-chat__users {
  border-left: solid 1px var(--border-color-lighter);
}

.flow-chat__toggle {
  border: none;
  background: var(--background-secondary);
  border-top: solid 1px var(--border-color);
  border-left: solid 1px var(--border-color);
  border-bottom: solid 1px var(--border-color);
}

.flow-chat__messages .message {
  border-bottom: solid 1px var(--border-color-lighter);
}

.flow-chat__messages .handle .name {
  font-weight: bold;
}

.flow-chat__messages .message .text {
  color: #777;
}

.flow-chat__messages .handle .time {
  color: #999;
}

.flow-chat input.handle {
  background: #777;
  color: #fff;
}

.flow-chat input.message {
  background: var(--background) !important;
  color: var(--normal);
}

/***************************
 * MARKDOWN
 ****************/
.markdown-body pre {
  background: #333;
  color: #eee;
}

.markdown-body pre * {
  text-shadow: 0 -1px 1px #000;
}

.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.5s;
}

.fade-enter,
.fade-leave-to {
  opacity: 0;
}