/* Variavel global */
@import url('https://fonts.googleapis.com/css2?family=Reddit+Sans:ital,wght@0,200..900;1,200..900&display=swap');

:root {
  --primary-color: rgb(71, 71, 71);
  --primary-color-darker: rgb(9, 48, 56);
  --background-color: #222;
  --form-background-color: #222;
  --text-color: #fff;
}

* {
  box-sizing: border-box;
  outline: 0;
}
body {
  margin: 0;
  padding: 0;
  background: var(--background-color);
  color: var(--text-color);
  font-family: 'Open sans', sans-serif;
  font-size: 1.3em;
  line-height: 1.5em;
}
.container {
  max-width: 640px;
  margin: 50px auto;
  padding: 20px;
  background-color: var(--primary-color);
  border-radius: 10px;
}

h1 {
  text-align: center;
}
#textoCalcule {
  text-align: center;
}
form {
  background-color: var(--form-background-color);
  padding: 20px;
  border-radius: 10px;
}

form input,
form label,
form button {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 5px;
}

form input {
  background-color: var(--primary-color-darker);
  color: var(--text-color);
}

form label {
  color: #aaa;
}

form button {
  background-color: var(--primary-color-darker);
  color: var(--text-color);
  border: none;
  cursor: pointer;
}

form button:hover {
  background-color: var(--primary-color);
}

.columns {
  display: flex;
}

.column {
  flex: 1;
  padding: 0 10px;
  text-align: center;
}

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

.column h2 {
  margin-top: 0;
}

.resultado {
  background-color: var(--background-color);
  padding: 10px;
  border-radius: 5px;
  margin-top: 20px;
}