/* The Playground is a docs code block you can run: the editor and output use
   the same surface, font, and syntax colors as the code blocks on every page. */

.signified-playground {
  --playground-rule: var(--md-default-fg-color--lightest);
  --playground-surface: var(--md-code-bg-color);
  --playground-chrome: var(--md-default-bg-color);
  --playground-muted: var(--md-default-fg-color--light);
  --playground-signal: var(--md-accent-fg-color);
  --playground-error: #c62828;
  --playground-pane-height: clamp(16rem, 45vh, 28rem);
  --playground-code-size: 0.7rem;

  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto var(--playground-pane-height);
  grid-template-areas:
    "toolbar toolbar"
    "editor  output";
  margin: 1.5em 0;
  border: 1px solid var(--playground-rule);
  border-radius: 0.2rem;
  overflow: hidden;
  background: var(--playground-surface);
}

[data-md-color-scheme="slate"] .signified-playground {
  --playground-error: #ff8a80;
}

.signified-playground[hidden] {
  display: none;
}

/* Toolbar */

.signified-playground-toolbar {
  grid-area: toolbar;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.25rem 0.5rem;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--playground-rule);
  background: var(--playground-chrome);
}

.signified-playground-toolbar select {
  min-width: 0;
  max-width: 16rem;
  padding: 0.3rem 0.4rem;
  border: 1px solid var(--playground-rule);
  border-radius: 0.1rem;
  font: inherit;
  font-size: 0.7rem;
  color: var(--md-default-fg-color);
  background: var(--playground-chrome);
  cursor: pointer;
}

.signified-playground-status {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  font-size: 0.65rem;
  color: var(--playground-muted);
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.signified-playground[data-state="failed"] .signified-playground-status {
  color: var(--playground-error);
}

.signified-playground-toolbar button {
  flex: none;
  padding: 0.3rem 0.6rem;
  border: 1px solid transparent;
  border-radius: 0.1rem;
  font: inherit;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--playground-muted);
  background: transparent;
  cursor: pointer;
}

.signified-playground-toolbar button:hover {
  color: var(--md-default-fg-color);
}

.signified-playground-toolbar select:focus-visible,
.signified-playground-toolbar button:focus-visible {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 1px;
}

.signified-playground-toolbar .signified-playground-run {
  min-width: 4.5rem;
  color: var(--md-primary-bg-color);
  background: var(--md-primary-fg-color--dark);
}

.signified-playground-toolbar .signified-playground-run:hover {
  color: var(--md-primary-bg-color);
  background: var(--md-primary-fg-color);
}

.signified-playground-toolbar .signified-playground-run:disabled {
  opacity: 0.45;
  cursor: default;
}

.signified-playground-toolbar .signified-playground-run[data-action="stop"] {
  border-color: var(--playground-error);
  color: var(--playground-error);
  background: transparent;
}

/* The toolbar's bottom rule carries a signal across while Python is busy. */
.signified-playground-toolbar::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: linear-gradient(
      90deg,
      transparent,
      var(--playground-signal) 30%,
      var(--playground-signal) 70%,
      transparent
    )
    no-repeat;
  background-size: 40% 100%;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.signified-playground:is([data-state="loading"], [data-state="running"]) .signified-playground-toolbar::after {
  opacity: 1;
  animation: signified-playground-signal 1.4s ease-in-out infinite;
}

@keyframes signified-playground-signal {
  from {
    background-position: -70% 0;
  }
  to {
    background-position: 170% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signified-playground:is([data-state="loading"], [data-state="running"]) .signified-playground-toolbar::after {
    animation: none;
    background: var(--playground-signal);
  }
}

/* Editor and output */

.signified-playground-editor {
  grid-area: editor;
  min-height: 0;
}

.signified-playground-editor textarea,
.signified-playground-output {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0.8rem 1rem;
  border: 0;
  font-family: var(--md-code-font-family);
  font-size: var(--playground-code-size);
  line-height: 1.6;
  color: var(--md-code-fg-color);
  background: transparent;
}

.signified-playground-editor textarea {
  display: block;
  resize: none;
  tab-size: 4;
}

.signified-playground-editor textarea:focus {
  outline: none;
}

.signified-playground-output {
  grid-area: output;
  min-height: 0;
  overflow: auto;
  border-left: 1px solid var(--playground-rule);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.signified-playground-output:empty::before {
  content: attr(data-placeholder);
  font-family: var(--md-text-font-family);
  color: var(--playground-muted);
}

.signified-playground-output [data-stream="stderr"] {
  color: var(--playground-error);
}

.signified-playground-output [data-stream="notice"] {
  font-family: var(--md-text-font-family);
  color: var(--playground-muted);
}

.signified-playground-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* CodeMirror, themed with Material's code colors so it follows light and dark mode. */

.signified-playground .CodeMirror {
  height: 100%;
  font-family: var(--md-code-font-family);
  font-size: var(--playground-code-size);
  line-height: 1.6;
  color: var(--md-code-fg-color);
  background: transparent;
}

.signified-playground .CodeMirror-lines {
  padding: 0.8rem 0;
}

.signified-playground .CodeMirror pre.CodeMirror-line {
  padding: 0 1rem 0 0.4rem;
}

.signified-playground .CodeMirror-gutters {
  border-right: 0;
  background: transparent;
}

.signified-playground .CodeMirror-linenumber {
  padding: 0 0.4rem 0 0.8rem;
  color: var(--md-default-fg-color--lighter);
}

.signified-playground .CodeMirror-cursor {
  border-left-color: var(--md-code-fg-color);
}

.signified-playground .CodeMirror-selected,
.signified-playground .CodeMirror-focused .CodeMirror-selected,
.signified-playground .CodeMirror-line::selection,
.signified-playground .CodeMirror-line > span::selection,
.signified-playground .CodeMirror-line > span > span::selection {
  background: var(--md-accent-fg-color--transparent);
}

.signified-playground .cm-s-signified .cm-keyword,
.signified-playground .cm-s-signified .cm-meta {
  color: var(--md-code-hl-keyword-color);
}

.signified-playground .cm-s-signified .cm-builtin {
  color: var(--md-code-hl-constant-color);
}

.signified-playground .cm-s-signified .cm-def {
  color: var(--md-code-hl-function-color);
}

.signified-playground .cm-s-signified .cm-string,
.signified-playground .cm-s-signified .cm-string-2 {
  color: var(--md-code-hl-string-color);
}

.signified-playground .cm-s-signified .cm-number {
  color: var(--md-code-hl-number-color);
}

.signified-playground .cm-s-signified .cm-comment {
  color: var(--md-code-hl-comment-color);
}

.signified-playground .cm-s-signified .cm-operator {
  color: var(--md-code-hl-operator-color);
}

.signified-playground .cm-s-signified .cm-punctuation {
  color: var(--md-code-hl-punctuation-color);
}

.signified-playground .cm-s-signified .cm-variable,
.signified-playground .cm-s-signified .cm-variable-2,
.signified-playground .cm-s-signified .cm-property {
  color: var(--md-code-hl-name-color);
}

.signified-playground .cm-s-signified .cm-error {
  color: var(--playground-error);
}

/* Phones: stack the panes and run edge to edge, like Material's code blocks. */

@media screen and (max-width: 44.9375em) {
  .signified-playground {
    --playground-pane-height: 16rem;

    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto var(--playground-pane-height) 12rem;
    grid-template-areas:
      "toolbar"
      "editor"
      "output";
    margin-right: -0.8rem;
    margin-left: -0.8rem;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  /* Two rows: the example and Run, then the status and the other actions. */
  .signified-playground-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas:
      "example example run"
      "status  reset   share";
    padding: 0.5rem 0.8rem;
  }

  .signified-playground-toolbar select {
    grid-area: example;
    max-width: none;
  }

  .signified-playground-status {
    grid-area: status;
    text-align: left;
  }

  .signified-playground-toolbar [data-playground-reset] {
    grid-area: reset;
  }

  .signified-playground-toolbar [data-playground-share] {
    grid-area: share;
  }

  .signified-playground-toolbar .signified-playground-run {
    grid-area: run;
  }

  .signified-playground-output {
    border-top: 1px solid var(--playground-rule);
    border-left: 0;
  }
}