select,
   input[type="text"] {
     width: 100%;
     padding: 5px;
     border: 1px solid #ddd;
     border-radius: 4px;
     font-size: 16px;
     margin: 5px 0;
   }

  select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #2c3e50 50%),
                    linear-gradient(-45deg, transparent 50%, #2c3e50 50%);
  background-position: calc(100% - 15px) 50%, calc(100% - 10px) 50%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 25px; /* Espacio para la flecha */
}

   input[type="text"][readonly] {
     background: #e8f5e9;
     font-weight: bold;
   }

   /* BOTONES ************************/
   .btn {
     background: var(--verde);
     color: var(--blanco);
     border: none;
     padding: 10px 15px;
     border-radius: 4px;
     cursor: pointer;
     font-size: 14px;
     width: 100%;
     transition: background 0.3s;
   }

   .btn:hover {
     background: var(--naranja);
   }
    .boton-calculo {
    width: 100%;
    padding: 5px 10px;
    border: none;
    border-radius: 5px;
    background-color: #4a8c2c; /* Verde agrícola */
    color: white !important; /* Forzamos color blanco */
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 0.5px;
  }
  
  /* Efecto hover */
  .boton-calculo:hover {
    background-color: #3a6b24; /* Verde más oscuro */
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  }
  
  /* Efecto al hacer clic */
  .boton-calculo:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  }
  
  /* Versión alternativa naranja */
  .boton-calculo.alt {
    background-color: #e67e22; /* Naranja */
  }
  
  .boton-calculo.alt:hover {
    background-color: #d35400; /* Naranja más oscuro */
  }