html,
body {
  height: 100%;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f2f5f9;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

#alertLabel {
  font-size: 2rem;
  font-weight: bold;
}

textarea {
  width: 320px;        /* ancho inicial */
  height: 150px;       /* alto inicial */
  max-width: 90vw;     /* se adapta en pantallas pequeñas */
  max-height: 60vh;    /* evita que cubra toda la pantalla */
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  resize: vertical;    /* permite al usuario redimensionar solo en vertical */
}

button {
  padding: 0.5rem 1.5rem;
  font-size: 1rem;
  background: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #0056b3;
}

#responseMsg {
  font-size: 0.9rem;
  margin: 0;
}