@import url("https://fonts.googleapis.com/css2?family=Mulish:ital,wght@0,400;0,700;1,400&display=swap");
:root {
  --primaryColor: #fff;
  --navColor1: #e91e63;
  --navColor2: #00acc1;
  --navColor3: #9c27b0;
  --navColor4: #4caf50;
  --navColor5: #ff9800;
}

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

html {
  font-size: 62.5%;
  box-sizing: border-box;
}

body {
  font-family: "Mulish", sans-serif;
  color: #fff;
  font-size: 1.6rem;
  line-height: 1.5;
  background: #000;
}

.overlay {
  position: fixed;
  z-index: 9;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  transform: translateX(-100vw);
}
.overlay.overlay-slide-right {
  transition: all 0.4s ease-in-out;
  transform: translateX(0);
}
.overlay.overlay-slide-left {
  transition: all 0.8s ease-in-out;
  transform: translateX(-100vw);
}

nav,
nav ul {
  height: 100vh;
  margin: 0;
  padding: 0;
}

nav ul {
  display: flex;
  flex-direction: column;
  justify-content: stretch;
  list-style: none;
}
nav ul li {
  height: 20%;
  overflow: hidden;
}
nav ul li:nth-of-type(1) {
  background-color: var(--navColor1);
}
nav ul li:nth-of-type(2) {
  background-color: var(--navColor2);
}
nav ul li:nth-of-type(3) {
  background-color: var(--navColor3);
}
nav ul li:nth-of-type(4) {
  background-color: var(--navColor4);
}
nav ul li:nth-of-type(5) {
  background-color: var(--navColor5);
}
nav ul a {
  position: relative;
  top: 45%;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 4px;
  text-decoration: none;
  display: block;
  text-align: center;
  transition: all 0.3s;
}
nav ul a:hover {
  transform: scale(1.2);
  transition: all 0.3s;
}

.slide-in-1 {
  animation: slide-in 0.4s linear 0.2s both;
}

.slide-in-2 {
  animation: slide-in 0.4s linear 0.4s both;
}

.slide-in-3 {
  animation: slide-in 0.4s linear 0.6s both;
}

.slide-in-4 {
  animation: slide-in 0.4s linear 0.8s both;
}

.slide-in-5 {
  animation: slide-in 0.4s linear 1s both;
}

@keyframes slide-in {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}
.slide-out-1 {
  animation: slide-out 0.3s linear 0.5s both;
}

.slide-out-2 {
  animation: slide-out 0.3s linear 0.4s both;
}

.slide-out-3 {
  animation: slide-out 0.3s linear 0.3s both;
}

.slide-out-4 {
  animation: slide-out 0.3s linear 0.2s both;
}

.slide-out-5 {
  animation: slide-out 0.3s linear 0.1s both;
}

@keyframes slide-out {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-100%);
  }
}
.menu-bars {
  position: fixed;
  top: 1rem;
  right: 2rem;
  z-index: 10;
  display: inline;
  cursor: pointer;
}
.menu-bars .bar1,
.menu-bars .bar2,
.menu-bars .bar3 {
  width: 35px;
  height: 2px;
  background-color: #fff;
  margin: 8px 0;
  transition: 0.4s;
}
.menu-bars.change .bar1 {
  transform: rotate(-45deg) translate(-7px, 8px);
}
.menu-bars.change .bar2 {
  opacity: 0;
}
.menu-bars.change .bar3 {
  transform: rotate(45deg) translate(-6px, -8px);
}

section {
  width: 100%;
  height: 100vh;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primaryColor);
}
section#home {
  background-image: url("https://images.unsplash.com/photo-1485795959911-ea5ebf41b6ae?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1181&q=80");
  background-size: cover;
  background-position: center center;
}
section#home a {
  position: absolute;
  z-index: 2;
  top: 1.5rem;
  left: 1.5rem;
  text-decoration: none;
  font-size: 1rem;
  padding-bottom: 5px;
  color: var(--primaryColor);
  border-bottom: 1px solid var(--primaryColor);
}
section#about {
  background-color: var(--navColor2);
}
section#skills {
  background-color: var(--navColor3);
}
section#projects {
  background-color: var(--navColor4);
}
section#contact {
  background-color: var(--navColor5);
}

@media (max-width: 600px) {
  section#home a {
    top: 1rem;
    left: 1rem;
  }

  .menu-bars {
    top: 0.5rem;
    right: 1rem;
  }
}