: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;
}

body {
  font-size: 18px;
  font-family: Arial, Helvetica, sans-serif;
}

.container {
  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;
  height: 56px;
  border-bottom: 2px solid var(--border);
  transition: border-color var(--style-transition);
}

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

.header-title h2 {
  margin-right: 10px;
  color: var(--nav);
  transition: color var(--style-transition);
}

.header-title .model-selector {
  padding: 2px;
}

.header-title .nav-item {
  margin: 0 8px;
}

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

.nav-item {
  display: flex;
  align-items: center;
  cursor: pointer;
  margin: 0 16px;
  user-select: none;
  fill: var(--nav);
  transition: fill var(--style-transition);
}

.nav-item:hover {
  fill: var(--nav-hover);
}

.nav-item span {
  font-size: 1.1em;
}

.nav-item#source-toggle {
  display: none;
}

.nav-item#github-link {
  fill: var(--nav-faded);
}

.nav-item#github-link:hover {
  fill: var(--nav-faded-hover);
}

.toggle:not(.toggled) svg:nth-child(1) {
  display: none;
}

.toggle.toggled svg:nth-child(2) {
  display: none;
}

.nav-selector {
  position: relative;
}

.nav-selector-menu {
  display: flex;
  flex-direction: column;
  visibility: hidden;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 10px;
  z-index: 10;
  border-radius: 3px;
  background-color: var(--nav-menu);
}

.nav-selector-menu .btn {
  white-space: nowrap;
}

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

.tree {
  position: relative;
}

.tree-content {
  overflow-y: auto;
  padding-bottom: 50vh;
  height: 100%;
  padding: 1rem;
}

.source {
  position: relative;
}

.source-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.source textarea {
  width: 100%;
  height: 100%;
  padding: 1.3rem 0.4rem;
  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 textarea::selection {
  background-color: var(--selection);
}

.tree-controls,
.source-controls {
  display: flex;
  flex-direction: row-reverse;
  position: absolute;
  right: 17px;
  top: 0;
  padding: 5px;
}

.tree-controls .btn:not(:first-child),
.source-controls .btn:not(:first-child) {
  margin-right: 5px;
}

.tree-controls-menu,
.source-controls-menu {
  display: flex;
  visibility: hidden;
  flex-direction: column;
  position: absolute;
  right: 17px;
  top: 37px;
  padding: 5px;
}

.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;
}

.source canvas {
  width: 100%;
  max-width: 100%;
  /* position: absolute; */
  /* bottom: 0; */
  background-color: var(--nav-faded);
  display: block;
  cursor: grab;
  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;
  padding: 7px 11px;
  cursor: pointer;
  outline: none;
  font-size: 1rem;
  background-color: var(--btn-background);
  color: var(--btn-text);
  fill: var(--btn-text);
  transition: background-color var(--style-transition);
}

.btn: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;
}

.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);
}

.errors {
  position: fixed;
  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);
}

.errors:not(.active) .error-list {
  display: none;
}

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

.error span {
  padding-left: 11px;
}

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

.errors.active .toggle {
  padding: 2px;
}

.home {
  display: flex;
  padding: 20px;
}

.generators-list {
  display: flex;
  flex-direction: column;
  margin: 0 20px;
}

.generators-card {
  margin: 5px 0;
  padding: 8px 15px;
  cursor: pointer;
  user-select: none;
  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:hover,
.generators-card.selected {
  background-color: var(--nav-faded-hover);
  margin-left: 8px;
  margin-right: -8px;
}

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

@media screen and (max-width: 580px) {
  body {
    overflow-y: hidden;
  }

  .header {
    flex-direction: column;
    height: 92px;
  }

  .nav {
    align-self: flex-end;
  }

  .content,
  .source textarea {
    height: calc(100vh - 92px);
  }

  .source,
  .gutter.gutter-horizontal {
    display: none;
  }

  .tree {
    width: 100% !important;
    height: 100%;
  }

  .nav-item#source-toggle {
    display: flex;
    position: absolute;
    left: 10px;
  }

  .source.active {
    display: initial;
    position: absolute;
    width: 100% !important;
    height: 100%;
  }

  .source.active .source-controls {
    right: 17px;
    top: 0px;
  }

  .source.active .source-controls-menu {
    right: 17px;
    top: 37px;
  }

  .nav-selector-menu {
    right: 0;
    left: initial;
  }
}

@media screen and (max-width: 480px) {
  .header-title h2 {
    font-size: 18px;
  }
}

@media screen and (min-width: 581px) and (max-width: 640px) {
  .header-title h2 {
    font-size: 22px;
  }
}