@import url("https://fonts.googleapis.com/css2?family=Work+Sans&display=swap");

:root {
  --background: rgba(0, 214, 170, 0.85);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #222;
  font-family: "Work Sans", sans-serif;
  font-weight: 400;
}

.content {
  height: 200vh;
  background-image: url(https://images.unsplash.com/photo-1614999440385-acc897b5e97b?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80);
  background-color: #999;
  background-blend-mode: multiply;
  background-size: cover;
  display: grid;
  place-items: center;
  color: rgb(255, 0, 255);
}

/* nav styles start here */

header {
  background: var(--background);
  text-align: center;
  position: fixed;
  z-index: 999;
  width: 100%;
}

.logo {
  margin: 10px;
}

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  position: absolute;
  top: 0;
  left: 0;
  margin-left: 1em;
  height: 100%;
  display: flex;
  align-items: center;

}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  display: block;
  background: white;
  width: 2em;
  height: 2px;
  border-radius: 2px;
  position: relative;
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
  content: "";
  position: absolute;
}

.nav-toggle-label span::before {
  bottom: 7px;
}

.nav-toggle-label span::after {
  top: 7px;
}

nav {
  background: var(--background);
  width: 100%;
  position: absolute;
  text-align: left;
  top: 100%;
  left: 0;
  transform: scale(1, 0);
  transform-origin: top;
  transition: transform 400ms ease-in-out;
}

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

li {
  margin-bottom: 1em;
  margin-left: 1em;
}

a {
  color: white;
  text-decoration: none;
  font-size: 1.2rem;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 150ms ease-in-out;
}

a:hover {
  color: #000;
}

.nav-toggle:checked ~ nav {
  transform: scale(1, 1);
}

.nav-toggle:checked ~ nav a {
  opacity: 1;
  transition: opacity 250ms ease-in-out 200ms;
}

@media screen and (min-width: 800px) {
  .nav-toggle-label {
    display: none;
  }

  header {
    display: grid;
    grid-template-columns: 1fr auto minmax(600px, 3fr) 1fr;
  }

  .logo {
    grid-column: 2 / 3;
  }

  nav {
    all: unset;
    grid-column: 3/4;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  ul {
    display: flex;
    justify-content: center;
  }

  li {
    margin-left: 1.5em;
    margin-right: 1.5em;
    margin-bottom: 0;
  }

  a {
    opacity: 1;
    position: relative;
  }

  nav a::before {
    content: "";
    display: block;
    height: 3px;
    background: #222;
    border-radius: 5px;
    position: absolute;
    width: 90%;
    bottom: -.3em;
    left: 5%;
    right: 0;
    transform: scale(0, 1);
    transition: transform 250ms ease-in-out 
  }

  nav a:hover::before {
    transform: scale(1, 1);
  }
}