body {
  font-family: sans-serif;
  background: #f3f3f3;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.page {
  display: none;
  flex-direction: column;
  width: 600px;
  gap: 10px;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
}

.page.active { display: flex; }

textarea, input, select {
  width: 100%;
  padding: 8px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

button {
  padding: 10px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
button:hover { background: #0056b3; }

.etapa {
  border: 1px solid #ccc;
  border-radius: 8px;
  padding: 10px;
  background: #fafafa;
}

pre {
  background: #000;
  color: #0f0;
  padding: 10px;
  height: 200px;
  overflow-y: auto;
  font-size: 12px;
}
.preview {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thumb {
  max-width: 120px;
  max-height: 120px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 0 5px rgba(0,0,0,0.2);
}

audio, video {
  width: 120px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 0 5px rgba(0,0,0,0.2);
}