/* Define variables per theme on body */
body.theme-pastel-dark {
  --bg: #1e1e1e;
  --text: #eee;
  --surface: #2d2d2d;
  --border: #555;
  --accent: #4e3653;
  --accent-hover: #d910c2;
  --heading: #fff;

  --kw: #afcae3;
  --kw-weight: 600;
  --op: #eda0e6;
  --punct: #D4D4D4;
  --id: #b3a6ff;
  --prop: #fcb0f6;
  --lit: #f7f9d3;
  --num: #1db5e8;
  --class: #97f597;
  --class-style: italic;
  --comment: gray;
  --comment-style: italic;
}

body.theme-light {
  --bg: #ffffff;
  --text: #24292e;
  --btn-text: white;
  --surface: #f6f8fa;
  --border: #d0d7de;
  --accent: #005cc5;
  --accent-hover: #22863a;
  --heading: #24292e;

  --kw: #005cc5;
  --kw-weight: 600;
  --op: #d73a49;
  --punct: #24292e;
  --id: #7e43eb;
  --prop: #e36209;
  --lit: #032f62;
  --num: #c50097;
  --class: #17a639;
  --class-style: italic;
  --comment: #6a737d;
  --comment-style: italic;
}

body.theme-solarized {
  --bg: #002b36;
  --text: #93a1a1;
  --surface: #073642;
  --border: #586e75;
  --accent: #268bd2;
  --accent-hover: #859900;
  --heading: #93a1a1;

  --kw: #268bd2;
  --kw-weight: 600;
  --op: #d33682;
  --punct: #839496;
  --id: #b58900;
  --prop: #cb4b16;
  --lit: #2aa198;
  --num: #6c71c4;
  --class: #859900;
  --class-style: italic;
  --comment: #586e75;
  --comment-style: italic;
}

/* Now your original selectors but with variables */

body {
  font-family: monospace;
  background: var(--bg);
  color: var(--text);
  margin: 2em auto;
  padding: 1em;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background 0.3s ease, color 0.3s ease;
}

h1, h2 {
  font-family: sans-serif;
  color: var(--heading);
}

#codeWrapper {
  display: flex;
  flex-direction: row;
  width: 90%;
}

textarea,
pre {
  position: relative;
  box-sizing: border-box;
  font-family: monospace;
  font-size: 1em;
  margin-bottom: 1em;
  white-space: pre;
  margin: 10px;
  resize: vertical;
  tab-size: 2;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1em;
  height: 300px;
  overflow-y: auto;
  width: 45%;
  transition: background 0.3s ease, color 0.3s ease, border 0.3s ease;
}

pre {
  width: 100%;
}

textarea[readonly] {
  pointer-events: none;
  width: 55%;
}

pre[class*="language-"],
code[class*="language-"] {
  font-family: 'Fira Code', monospace !important;
  font-size: 13px !important;
}

button {
  font-size: 1.2em;
  padding: 0.5em 1em;
  cursor: pointer;
  background-color: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  margin: 0 0.5em;
  transition: background 0.3s ease;
  color: white
}

button:hover {
  background-color: var(--accent-hover);
}

.button-group {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1em;
}

#structureDiagram {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1em;
  font-family: monospace;
  max-height: 400px;
  overflow-y: auto;
  width: calc(90% - 40px);
  border-radius: 6px;
  color: var(--text);
}

.collapsible {
  cursor: pointer;
  user-select: none;
  padding: 0.2em 0.4em;
  display: inline-block;
  border-radius: 3px;

  margin-bottom: 0.2em;
  color: var(--heading);
  transition: background 0.3s ease, color 0.3s ease;
}

.collapsible::before {
  content: "▶\2002";
  display: inline-block;
  transform-origin: center;
  transition: transform 0.3s ease;
  font-size: 18px;
}

.collapsible.active::before {
  transform: rotate(90deg);
}

.content {
  margin-left: 1.2em;
  display: none;
}

.content.active {
  display: block;
}

.container {
  width: 90%;
}

#mermaidDiagram {
  width: calc(100% - 48px);
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-top: 1em;
  overflow-x: auto;
  color: var(--text);
}

/* Syntax Highlighting */

.kw, .op, .punct, .id, .prop, .lit, .num, .class, .comment {
  transition: color 0.2s ease, font-style 0.2s ease, font-weight 0.2s ease;
}

.kw {
  color: var(--kw);
  font-weight: var(--kw-weight);
}

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

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

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

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

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

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

.class {
  color: var(--class);
  font-style: var(--class-style);
  font-weight: bold
}

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