body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f8f9fa;
}

.app {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

header {
  margin-bottom: 30px;
  text-align: center;
}

header h1 {
  margin-bottom: 10px;
}

main {
  background-color: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

footer {
  margin-top: 30px;
  text-align: center;
  color: #6c757d;
}

footer a {
  color: #0d6efd;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

.collaborators {
  margin-bottom: 20px;
}

.collaborator-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.collaborator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background-color: #f0f9ff;
  border-radius: 20px;
}

.avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.typing-indicator {
  margin-left: 5px;
  font-style: italic;
  color: #6c757d;
}

.editor-container {
  position: relative;
  margin-top: 20px;
}

.editor {
  width: 100%;
  height: 300px;
  padding: 16px;
  font-family: monospace;
  font-size: 16px;
  line-height: 1.5;
  border: 1px solid #ccc;
  border-radius: 8px;
  resize: vertical;
}