/* Estilo base */
body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
  color: #333;
}

h1, h2, h3 {
  color: #2c3e50;
}

section {
  background: #fff;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

input {
  display: block;
  margin: 10px 0;
  padding: 10px;
  width: 100%;
  max-width: 400px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  padding: 10px 20px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 10px;
}

button:hover {
  background-color: #2980b9;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  display: block;
  overflow-x: auto;
}

table th, table td {
  border: 1px solid #ccc;
  padding: 10px;
  text-align: left;
}

table th {
  background-color: #ecf0f1;
}

#total {
  font-weight: bold;
  margin-top: 20px;
  font-size: 1.2em;
}

/* Responsividade para telas menores */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  section {
    padding: 15px;
  }

  input {
    max-width: 100%;
  }

  button {
    width: 100%;
    padding: 12px;
  }

  table th, table td {
    padding: 8px;
    font-size: 0.9em;
  }

  #total {
    font-size: 1em;
  }
}