:root {
  --background: #ffffff;
  --text: #000000;
  --nav: #343a40;
  --nav-hover: #565d64;
  --nav-faded: #9fa2a7;
  --nav-faded-hover: #bcbfc3;
  --selection: rgba(103, 134, 221, 0.6);
  --border: #cccccc;
  --nav-menu: #ffffff83;
  --btn-background: #1f2020a6;
  --btn-hover: #5d5f5fa6;
  --btn-text: #ffffff;
  --btn-active: #a5e77a;
  --errors-background: #f13000c5;
  --errors-text: #000000cc;
  
  --style-transition: 0.3s;
}

:root[data-theme=dark] {
  --background: #222222;
  --text: #ffffff;
  --nav: #91908f;
  --nav-hover: #b4b3b0;
  --nav-faded: #4d4c4c;
  --nav-faded-hover: #6e6e6e;
  --border: #3d3d3d;
  --nav-menu: #00000083;
  --btn-background: #0a0a0aa6;
  --btn-hover: #383838a6;
  --errors-text: #ffffffcc;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

a svg {
  pointer-events: none;
}

body {
  font-size: 18px;
  font-family: Arial, Helvetica, sans-serif;
  overflow-x: hidden;
  background-color: var(--background);
  transition: background-color var(--style-transition);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  width: 100%;
  height: 56px;
  z-index: 5;
  background-color: var(--background);
  border-bottom: 2px solid var(--border);
  transition: border-color var(--style-transition), background-color var(--style-transition);
}

body[data-panel="home"] header,
body[data-panel="settings"] header {
  position: fixed;
}

.header-title {
  display: flex;
  align-items: center;
}

.header-title h2 {
  color: var(--nav);
  transition: color var(--style-transition);
}

.home-link {
  margin: 0 8px 0 0;
  height: 32px;
  fill: var(--nav);
  transition: fill var(--style-transition);
}

.home-link svg {
  width: 32px;
  height: 32px;
  padding: 2px;
}

.panel-toggles {
  display: none;
}

nav ul {
  display: flex;
  align-items: center;
}

.panel-toggles > *,
nav li {
  display: flex;
  align-items: center;
  cursor: pointer;
  margin: 0 16px;
  user-select: none;
}

.panel-toggles > *:hover svg,
.home-link:hover svg,
header .toggle:hover svg,
nav li:hover svg {
  fill: var(--nav-hover);
}

nav > .toggle {
  display: none;
}

nav li.dimmed svg {
  fill: var(--nav-faded);
}

nav li.dimmed:hover svg {
  fill: var(--nav-faded-hover);
}

.panel-toggles svg,
nav > .toggle svg,
nav li > *,
nav li svg {
  width: 24px;
  height: 24px;
  fill: var(--nav);
  transition: fill var(--style-transition);
}

nav > .toggle span {
  color: var(--nav);
  margin-left: 5px;
}

.dropdown {
  position: relative;
}

.dropdown > * {
  position: absolute;
  width: 24px;
  height: 24px;
}

.dropdown > *:not(select) {
  pointer-events: none;
}

.dropdown select {
  cursor: pointer;
  border: none;
  background: none;
  color: transparent;
  outline: none;
}

.dropdown option {
  color: var(--text);
  background-color: var(--background);
  font-size: 130%;
  border: none;
}

.content {
  display: flex;
  height: calc(100vh - 56px);
  overflow-y: hidden;
  color: var(--text);
  fill: var(--text);
}

.split-group {
  display: flex;
  width: 100%;
  height: 100%;
}

.split-group.vertical {
  flex-direction: column;
}

.panel {
  position: relative;
  height: 100%;
  overflow: hidden;  
}

.tree {
  display: flow-root;
  padding: 44px 16px 50vh;
  height: 100%;
  overflow: auto;
}

.source {
  width: 100%;
  height: 100%;
  padding: 32px 8px;
  border: none;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
  tab-size: 4;
  -moz-tab-size: 4;
  -o-tab-size: 4;
  -webkit-tab-size: 4;
  outline: none;
  resize: none;
  background-color: var(--background);
  color: var(--text);
  transition: background-color var(--style-transition), color var(--style-transition)
}

.source::selection {
  background-color: var(--selection);
}

.panel-controls {
  display: flex;
  position: absolute;
  right: 22px;
  top: 5px;;
  z-index: 1;
}

.preview-panel .panel-controls {
  justify-content: flex-end;
  width: 100%;
  right: 0;
  padding: 0 5px;
  opacity: 0;
  transition: opacity 0.1s;
  pointer-events: none;
}

.preview-panel .panel-controls > * {
  pointer-events: initial;
}

.preview-panel:hover .panel-controls {
  opacity: 1;
}

.panel-controls > *:not(:last-child) {
  margin-right: 5px;
}

.panel-menu:not(.no-relative) {
  position: relative;
}

.panel-menu > .btn {
  height: 100%;
}

.panel-menu-list {
  display: none;
  flex-direction: column;
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 5px;
}

.panel-menu .btn.active ~ .panel-menu-list {
  display: flex;
}

.panel-controls input {
  margin-right: 5px;
  background: var(--background);
  color: var(--text);
  font-size: 17px;
  border: none;
  transition: background-color var(--style-transition), color var(--style-transition);
}

.panel-controls input::selection {
  background-color: var(--selection);
}

.btn.preview-scale {
  display: block;
  width: 25%;
  text-align: center;
  border-bottom: 2px solid #fff;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.gutter {
  border-color: var(--border) !important;
  transition: border-color var(--style-transition);
}

.gutter.gutter-vertical {
  border-top: 2px solid;
  border-bottom: 2px solid;
  cursor: ns-resize;  
}

.gutter.gutter-horizontal {
  border-left: 2px solid;
  border-right: 2px solid;
  cursor: ew-resize;
}

.preview-panel canvas {
  width: 100%;
  height: 100%;
  background-color: var(--nav-faded);
  display: block;
  cursor: crosshair;
  image-rendering: optimizeSpeed;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: -o-crisp-edges;
  image-rendering: pixelated;
  -ms-interpolation-mode: nearest-neighbor;
}

.btn {
  display: flex;
  align-items: center;
  border: none;
  border-radius: 3px;
  height: 33px;
  padding: 7px 11px;
  cursor: pointer;
  user-select: none;
  outline: none;
  font-size: 1rem;
  white-space: nowrap;
  background-color: var(--btn-background);
  color: var(--btn-text);
  fill: var(--btn-text);
  transition: background-color var(--style-transition);
}

.btn:not(.input):hover {
  background-color: var(--btn-hover);
}

.btn svg:not(:last-child) {
  margin-right: 5px;
}

.btn-group .btn:not(:last-child) {
  border-bottom-right-radius: 0px;
  border-bottom-left-radius: 0px;
}

.panel-menu .result-list .btn:first-child,
.btn-group .btn:not(:first-child) {
  border-top-right-radius: 0px;
  border-top-left-radius: 0px;
}

.btn.check,
.btn.selected {
  fill: var(--btn-active);
  color: var(--btn-active);
}

.btn.input {
  cursor: initial;
}

.btn input {
  margin-left: 5px;
  width: 100px;
}

.btn.btn.large-input {
  padding: 5px;
  padding-left: 11px;
}

.btn.large-input input {
  width: 100%;
  height: 100%;
  margin-right: 0;
}

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

.panel-menu .result-list {
  display: block;
  width: 380px;
  height: unset;
  overflow-y: auto;
  overflow-x: hidden;
  
  max-height: 240px;
}

.panel-menu.disabled {
  display: none;
  margin-right: 0;
}

.errors {
  position: fixed;
  display: flex;
  bottom: 17px;
  right: 17px;
  margin: 5px;
  border-radius: 3px;
  background-color: var(--errors-background);
  color: var(--errors-text);
  fill: var(--errors-text);
  transition: fill var(--style-transition);
}

.error {
  display: flex;
  align-items: center;
  padding: 7px;
}

.error span:not(:last-child) {
  padding-right: 11px;
}

.errors .toggle {
  padding: 6px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  user-select: none;
}

.errors svg {
  width: 24px;
  height: 24px;
}

.home {
  display: flex;
  padding: 20px;
  padding-top: 71px;
}

.home.center {
  flex-direction: column;
  align-items: center;
  color: var(--nav);
}

.home.center p {
  padding-bottom: 20px;
  text-align: center;
  font-size: 20px;
}

.generators-list {
  display: flex;
  flex-direction: column;
  margin: 0 20px;
  list-style-type: none;
}

.generators-card {
  margin: 5px 0;
  padding: 8px 15px;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  text-transform: capitalize;
  border-radius: 3px;
  background-color: var(--nav-faded);
  color: var(--text);
  fill: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color 0.2s;
  transition: margin 0.2s;
}

.generators-card * {
  pointer-events: none;
}

.generators-card:hover,
.generators-card.selected {
  background-color: var(--nav-faded-hover);
  margin-left: 8px;
  margin-right: -8px;
}

.generators-card svg {
  margin-left: 10px;
}

.settings {
  padding: 20px;
  padding-top: 71px; 
}

.settings p {
  color: var(--nav);
  padding: 8px;
  border-bottom: 2px solid var(--border);
  transition: border-color var(--style-transition), color var(--style-transition);
}

.field-list {
  width: 100%;
  border-collapse: collapse;
  list-style-type: none;
}

.field-list li {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  transition: border-color var(--style-transition);
}

.field-prop {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  margin: 4px;
}

.field-prop > label,
.field-prop > input {
  height: 34px;
  color: var(--text);
  margin-right: -1px;
  border: 1px solid;
  border-color: var(--nav-faded-hover);
  transition: all var(--style-transition);
}

.field-prop label {
  padding: 0 9px;
  line-height: 1.94rem;
  background-color: var(--node-background-label);
  white-space: nowrap;
  border-top-left-radius: 3px;
  border-bottom-left-radius: 3px;
}

.field-prop input {
  width: 100%;
  line-height: 1.6rem;
  background-color: var(--node-background-input);
  color: var(--text);
  padding-left: 9px;
  font-size: 18px;
  border-top-right-radius: 3px;
  border-bottom-right-radius: 3px;
}

.field-prop svg {
  padding: 4px;
  margin: 0 4px;
  height: 28px;
  width: 28px;
  fill: var(--nav);
  cursor: pointer;
}

.field-prop .hidden svg {
  fill: #be4b2e;
}

.field-prop .dimmed svg {
  fill: var(--nav-faded);
}

.spinner {
  margin: 40px auto 0;
  width: 80px;
  height: 80px;
}

.spinner:after {
  content: "";
  display: block;
  width: 64px;
  height: 64px;
  margin: 8px;
  border-radius: 50%;
  border: 6px solid var(--border);
  border-color: var(--border) transparent var(--border) transparent;
  animation: spinner 1.2s linear infinite, fadein 0.4s;
  transition: border-color var(--style-transition);
}

.very-large {
  font-size: 80px;
  font-weight: 100;
}

@keyframes spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* MEDIUM */
@media screen and (max-width: 580px) {
  header {
    position: fixed;
  }

  .panel-toggles {
    display: flex;
  }

  body nav ul {
    display: none;
  }

  body[data-panel="home"] header {
    flex-direction: column;
    align-items: flex-start;
    height: 92px;
  }
  body[data-panel="home"] nav {
    align-self: flex-end;
  }

  body[data-panel="home"] nav ul {
    display: flex;
  }

  .content {
    padding-top: 56px; 
  }

  .content {
    height: unset;
    min-height: 100%;
  }

  textarea.source {
    height: calc(100vh - 56px);
  }

  .gutter {
    display: none;
  }

  .content-output,
  .tree-panel {
    width: 100% !important;
  }

  .source-panel,
  .preview-panel,
  .preview-panel canvas {
    height: 100% !important;
  }

  .tree-panel .panel-controls {
    top: 61px;
    right: 5px;
    position: fixed;
  }

  .btn.btn.large-input,
  .panel-menu .result-list {
    width: calc(100vw - 10px); 
  }

  .tree-panel,
  .content-output,
  .source-panel,
  .preview-panel {
    display: none;
  }

  body[data-panel="tree"] .tree-panel,
  body[data-panel="source"] .source-panel,
  body[data-panel="source"] .content-output,
  body[data-panel="preview"] .preview-panel,
  body[data-panel="preview"] .content-output {
    display: block;
  }

  .home {
    padding: 107px 5px 5px;
    justify-content: center;
  }

  .field-list li {
    flex-direction: column;
  }

  .field-prop {
    width: 100%;
  }

  .field-prop input {
    width: 100%;
  }
}

/* SMALL */
@media screen and (max-width: 650px) {
  body[data-panel="tree"] .header-title h2,
  body[data-panel="source"] .header-title h2,
  body[data-panel="preview"] .header-title h2 {
    font-size: 22px;
  }
}

/* EXTRA SMALL */
@media screen and (max-width: 480px) {
  .header-title h2 {
    font-size: 22px;
  }

  body[data-panel="tree"] .header-title h2,
  body[data-panel="source"] .header-title h2,
  body[data-panel="preview"] .header-title h2 {
    font-size: 18px;
  }

  body[data-panel="preview"] .preview-panel .panel-controls {
    opacity: 1;
  }

  .generators-list {
    margin: 0 15px;
  }

  .home:not(.center) .generators-card {
    font-size: 14px;
    padding: 8px;
  }
}