@import url("https://fonts.googleapis.com/css2?family=Work+Sans:ital,wght@0,300;0,400;0,600;0,700;1,400&display=swap");

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: rgb(156, 59, 236);
  --secondary-color: rgb(211, 215, 223);
}

body {
  font-family: "Work Sans", sans-serif;
  text-align: center;
}
nav {
  height: 6rem;
  background-color: var(--primary-color);
}
nav h1 {
  color: #fff;
  letter-spacing: 3px;
  font-size: 1.8rem;
  padding-top: 2rem;
}

main {
  height: 580px;
  max-width: 470px;
  background-color: var(--secondary-color);
  border-radius: 5px;
  width: 100%;
  margin: auto;
}
a {
  text-decoration: none;
}

li {
  list-style: none;
}

/* Header */
header h1 {
  font-size: 1.5rem;
  letter-spacing: 1.5px;
  margin: 2.3rem;
  padding-top: 3rem;
  color: var(--primary-color);
 
}

.input-label {
  display: block;
  font-size: larger;
  margin: 2rem 0px;
  font-weight: 600;
  letter-spacing: 1.5px;
}

.input {
  font-size: large;
  display: block;
  padding: 0.6rem 1rem;
  margin: 1rem auto;
  border: 2px solid var(--primary-color);
  border-radius: 0.5rem;
  width: 90%;
  max-width: 350px;
}
.input:focus {
  outline: none;
}

.btn-calculate {
  background: var(--primary-color);
  border: none;
  color: #fff;
  padding: 0.7rem 1rem;
  border-radius: 0.5rem;
  font-size: 1.4rem;
  cursor: pointer;
  margin: auto;
  max-width: 350px;
  width: 90%;
  font-weight: 600;
  letter-spacing: 2.5px;
}

.output {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1rem 0;
}

/* --------------------FOOTER  --------------------*/

footer {
  height: 8rem;
  background-color: var(--primary-color);
}

footer p {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  font-size: 1.2rem;
  text-align: center;
  color: #fff;
}
li {
  display: inline;
}

img {
  width: 3.7rem;
  margin-top: 1rem;
  margin-right: 1rem;
}

@media (max-width: 425px) {
  img {
    height: 3rem;
    margin-right: .1rem;
  }
  nav h1 {
    letter-spacing: 3px;
    font-size: 1.4rem;
    padding-top: 2rem;
  }
  header h1 {
    font-size: 1.3rem;
    margin: 2.3rem;
    padding-top: 1.4rem;
    
  }
}