body {
  margin: 0;
  font-family: sans-serif;
  background-color: #f4f4f4;
}

body.dark {
  background-color: #1e1e1e;
  color: white;
}

.toolbar {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 10px;
  background: #222;
}

.toolbar button {
  padding: 10px 15px;
  background: #04AA6D;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 15px;
}

#container {
  height: calc(100vh - 60px);
  display: flex;
  flex-direction: row;
}

#container.horizontal {
  flex-direction: column;
}

.split {
  overflow: auto;
}

#editor-pane, #output-pane {
  flex: 1;
  padding: 0;
}

.tabs {
  display: flex;
  background: #ccc;
}

.tabs button {
  flex: 1;
  padding: 10px;
  font-weight: bold;
  border: none;
  cursor: pointer;
  color: white;
  font-size: 15px;
  transition: background 0.2s ease;
}

.tabs button:nth-child(1) {
  background-color: #1e1e1e; /* HTML - orange */
}

.tabs button:nth-child(2) {
  background-color: #1e1e1e; /* CSS - blue */
}

.tabs button:nth-child(3) {
  background-color: #1e1e1e; /* JS - yellow */
}


.tabs button:hover {
  background: #ddd;
}


.tabs button.active-tab {
  box-shadow: inset 0 -4px 0 0 white;
  opacity: 1;
}

.code-area {
  height: 100%;
}

.tab-content {
  height: 100%;
}

.tab-content.hidden {
  display: none;
}

.CodeMirror {
  height: calc(100vh - 160px);
  font-size: 14px;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: white;
}

body.dark iframe {
  background: #333;
}