body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f3f4f6;
  color: #1f2937;
}

.container {
  max-width: 600px;
  margin: 40px auto;
  background: #ffffff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

h1 {
  text-align: center;
  margin-bottom: 24px;
  font-size: 1.6rem;
  color: #111827;
}

label {
  display: block;
  margin-bottom: 6px;
  margin-top: 16px;
  font-weight: bold;
}

textarea,
input {
  width: 100%;
  padding: 10px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  margin-bottom: 12px;
  box-sizing: border-box;
  resize: vertical;
}

button {
  background-color: #10b981;
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  width: 100%;
  margin-top: 8px;
}

button:hover {
  background-color: #059669;
}

#output {
  margin-top: 20px;
  text-align: center;
}

#output a {
  display: inline-block;
  background-color: #2563eb;
  color: white;
  padding: 12px 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

#output a:hover {
  background-color: #1d4ed8;
}

#mensagemGeradaContainer {
  visibility: hidden;
  margin-top: 24px;
  padding: 16px;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

#mensagemGerada {
  white-space: pre-wrap;
  font-size: 0.95rem;
  color: #374151;
  margin-top: 8px;
}