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

body {
  font-family: sans-serif;
  line-height: 1.5px;
  background-color: blueviolet;
  background-size: cover;
  background-position: center;
}

.logo {
  font-size: 40px;
  padding: 40px;
}

.logo span {
  color: red;
}

.navigation {
  position: relative;
}

.nav checkbox {
  display: none;
}

.nav-button {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: #fff;
  position: fixed;
  top: 40px;
  right: 40px;
  z-index: 2000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0, 1);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-background {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-image: radial-gradient(#4c0561, #003494);
  position: fixed;
  top: 45px;
  right: 45px;
  z-index: 1000;
  transition: all 0.5 cubic-bezier(0.86, 0, 0.07, 1);
}

.navbar {
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1500;
  background-color: #7f5a83;
  background-image: linear-gradient(315deg, #7f5a83 0%, #15598a 74%);
  opacity: 0;
  visibility: hidden;
  width: 0;
  transition: all 0.8s cubic-bezier(0.68, -0.55, 0.256, 1.55);
}

.nav-list {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  list-style: none;
  text-align: center;
  width: 100%;
}

.menu {
  display: inline-block;
  font-size: 20px;
  font-weight: 300;
  color: #fff;
  padding: 20px;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.4s;
}

.menu:hover {
  color: #a275f7;
  transform: translateX(10px);
}

.nav nav-checkbox:checked ~ .nav-background {
  transform: scale(1.6);
}

.nav nav-checkbox:checked ~ .navbar {
  opacity: 1;
  visibility: visibile;
  width: 100%;
}

.nav-icon {
  position: relative;
  margin-top: 35px;
}

.nav-icon,
.nav-icon::before,
.nav-icon::after {
  width: 40px;
  height: 3px;
  background: black;
  display: inline-block;
}

.nav-icon::before,
.nav-icon::after {
  content: "";
  position: absolute;
  left: 0;
  transition: all 0.2s;
}

.nav-icon::before {
  top: -10px;
}

.nav-icon::after {
  top: 10px;
}

.nav-button:hover .nav-icon::before {
  top: -12px;
}

.nav-button:hover .nav-icon::after {
  top: 12px;
}

.nav-checked:checked + .nav-button .nav-icon::before {
  background: transparent;
}

.nav-checkbox:checked + .nav-button .nav-icon::after {
  top: 0;
  transform: rotate(-135deg);
}