/*
 * Edit and run (examples-editor.ts): the source on the left, the example
 * running on the right; one above the other on a phone.
 */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e3e6eb;
  --text: #1f2937;
  --muted: #5b6472;
  --accent: #2f6fed;
  --code-bg: #fbfbfc;
  --comment: #6a737d;
  --string: #0a7f3f;
  --number: #b45309;
  --keyword: #7c3aed;
  --error: #b91c1c;
  --font: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --border: #272d35;
    --text: #e8eaed;
    --muted: #9aa3ae;
    --accent: #6ea8ff;
    --code-bg: #12161b;
    --comment: #7d8590;
    --string: #7ee2a8;
    --number: #f0b46a;
    --keyword: #c4a5ff;
    --error: #ff8a8a;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.4 var(--font);
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  height: 100dvh;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

header strong {
  font-weight: 650;
  margin-right: 4px;
}

header select {
  font: 14px var(--font);
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  max-width: 100%;
}

header .spacer {
  flex: 1;
}

header a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

button {
  font: 600 13px var(--font);
  padding: 7px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 0;
}

/* A textarea over its own highlighted copy: the textarea takes the typing,
 * its text transparent; the copy under it shows the colours. */
.code {
  position: relative;
  min-height: 0;
  background: var(--code-bg);
  border-right: 1px solid var(--border);
}

.code pre,
.code textarea {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 16px;
  border: 0;
  overflow: auto;
  font: 13px/1.6 var(--mono);
  tab-size: 2;
  white-space: pre;
  overflow-wrap: normal;
}

.code pre {
  pointer-events: none;
  color: var(--text);
}

.code textarea {
  resize: none;
  outline: none;
  background: transparent;
  color: transparent;
  caret-color: var(--text);
}

.code textarea::selection {
  background: rgba(47, 111, 237, 0.25);
  color: transparent;
}

.code .comment {
  color: var(--comment);
  font-style: italic;
}

.code .string {
  color: var(--string);
}

.code .number {
  color: var(--number);
}

.code .keyword {
  color: var(--keyword);
}

iframe {
  width: 100%;
  height: 100%;
  border: 0;
  background: #e8eaed;
}

footer {
  padding: 6px 16px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

footer.error,
#status.error {
  color: var(--error);
}

@media (max-width: 760px) {
  main {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }

  .code {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}