body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: url("backgroundOCC.png");
  background-size: cover;
  background-position: center;

  display: flex;
  justify-content: center;
  align-items: flex-start;   
  min-height: 100vh;         
  padding: 20px 0;           
}

/*centrado */
.container {
  background: rgba(255, 255, 255, 0.90);
  padding: 30px;
  border-radius: 12px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  text-align: center;
}

/* Títulos */
h1 {
  margin-bottom: 20px;
  color: #2c3e50;
}

h2 {
  margin-bottom: 10px;
  color: #34495e;
}

.checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr); 
  gap: 10px;
}

.checklist label {
  display: flex;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  font-size: 15px;
  color: #2c3e50;
  cursor: pointer;
  word-break: break-word; 
}

.checklist input[type="checkbox"] {
  margin-right: 10px;
  transform: scale(1.2);
}

/* Botón */
button {
  width: 100%;
  padding: 12px;
  background: #3498db;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background: #2980b9;
}

/* Resultados */
.result {
  margin-top: 20px;
  padding: 15px;
  background: #ecf0f1;
  border-radius: 8px;
  text-align: left;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  background: #fff;
  margin: 5px 0;
  padding: 8px;
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}