body {
  background-color: #0d1117;
  color: #c9d1d9;
  font-family: 'Segoe UI', sans-serif;
  padding: 2em;
}

.container {
  max-width: 1000px;
  margin: auto;
  text-align: center;
}

h1, h2 {
  margin-bottom: 1em;
}

.controls {
  margin-bottom: 1em;
}

select, button {
  margin: 0.5em;
  padding: 0.6em;
  font-size: 1em;
  border-radius: 6px;
  border: none;
}

button {
  background-color: #2ea44f;
  color: white;
  font-weight: bold;
  cursor: pointer;
}

button:hover {
  background-color: #22863a;
}

#editor {
  height: 500px;
  width: 100%;
  border: 1px solid #30363d;
  border-radius: 6px;
}

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

.tab {
  background-color: #161b22;
  color: #c9d1d9;
  padding: 0.5em 1em;
  margin: 0.2em;
  border-radius: 6px;
  cursor: pointer;
}

.tab.active {
  background-color: #2ea44f;
  color: white;
}

#terminal {
  width: 100%;
  height: 150px;
  background-color: #161b22;
  color: #00ff00;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 1em;
  font-family: monospace;
  margin-top: 1em;
}