body {
  -webkit-perspective: 2000px;
  perspective: 2000px;
  -webkit-perspective-origin: center;
  perspective-origin: center;
  overflow: hidden;
  background-color: #222222;
  width: 100vw;
  height: 100vh;
}

body nav {
  background: none;
  position: relative;
}

body nav .button {
  width: 60px;
  height: 60px;
  margin: 0;
  background-color: black;
  border-radius: 50%;
  display: inline-block;
  cursor: pointer;
}

body nav .button:nth-child(2) {
  margin-left: 30px;
}

body nav #buttons .buttons-navi {
  z-index: 100;
  position: fixed; 
  top: 50%; 
  left: 0;
  right: 0;
  transform: translateY(-50%); 
  display: flex;
  justify-content: space-between;
}

body nav #buttons .buttons-navi .button {
  width: 40px;
  height: 40px;
  pointer-events: auto; 
  margin: 0 20px; 
  background-color: rgba(0,0,0,0.5); 
}

body nav #buttons .buttons-navi .button span {
  color: white;
  font-size: 25px;
  font-weight: 500;
  position: absolute;
}

body nav #buttons .buttons-navi .button .button-next {
  top: 8px;
  left: auto; 
  right: 26px; 
}

body nav #buttons .buttons-navi .button .button-prev {
  top: 8px;
  left: 26px; 
  right: auto; 
}

body nav #buttons .buttons-menu {
  z-index: 100;
  position: absolute;
  top: 10px;
  right: 10px;
}

body nav #buttons .buttons-menu .button-wrapper {
  position: relative;
  right: -10px;
  top: 15px;
}

body nav #buttons .buttons-menu .button-wrapper span {
  display: block;
  width: 40px;
  height: 5px;
  background-color: white;
  border-radius: 5px;
  position: absolute;
}

body nav #buttons .buttons-menu .button-wrapper span:nth-child(1) {
  top: 0px;
}

body nav #buttons .buttons-menu .button-wrapper span:nth-child(2) {
  top: 12px;
}

body nav #buttons .buttons-menu .button-wrapper span:nth-child(3) {
  top: 24px;
}

body nav #menu {
  display: none;
  background-color: black;
  color: white;
  -webkit-transform-origin: 0% 0%;
  -o-transform-origin: 0% 0%;
  transform-origin: 0% 0%;
  position: absolute;
  z-index: 99;
}

body nav #menu ul {
  list-style: none;
  width: 100vw;
  height: 100vh;
  -webkit-transform-origin: center;
  -o-transform-origin: center;
  transform-origin: center;
  -webkit-transform: translateY(25vh);
  -o-transform: translateY(25vh);
  transform: translateY(25vh);
  padding-left: 0;
}

body nav #menu ul li {
  display: none;
  text-align: center;
  text-transform: uppercase;
  -webkit-transform-origin: left;
  -o-transform-origin: left;
  transform-origin: left;
  margin: 0 auto;
  font-size: 40px;
  -webkit-transform: translateX(-100vw);
  -o-transform: translateX(-100vw);
  transform: translateX(-100vw);
  cursor: pointer;
}

nav .page-title {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 101; 
  color: white;
  font-family: 'Poppins', sans-serif;
  font-size: 1.8rem;
  font-weight: 500;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
  opacity: 0.9;
  transition: opacity 0.3s ease;
}

nav .page-title:hover {
  opacity: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,1);
}

#pages {
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-transform-origin: 50% 50% -50vw;
  -o-transform-origin: 50% 50% -50vw;
  transform-origin: 50% 50% -50vw;
  height: 100vh;
  width: 100%;
  position: relative;
}

#pages section {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  font-size: 50px;
  margin: auto;
  display: flex;
  align-content: center;
}

#pages section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4); 
  z-index: 1;
}
#pages section > * {
  position: relative;
  z-index: 2;
}

#pages #main {
  background: url('/img/montagne-home.jpg') no-repeat center center;
  background-size: cover;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

#pages #work {
  -webkit-transform: translateX(50vw) translateZ(-50vw) rotateY(90deg);
  transform: translateX(50vw) translateZ(-50vw) rotateY(90deg);
  background: url('/img/mountain-lake.jpg') no-repeat center center;
  background-size: cover;
}

#pages #about {
  background: url('/img/lake-clouds.jpg') no-repeat center center;
  background-size: cover;
  -webkit-transform-origin: center;
  -o-transform-origin: center;
  transform-origin: center;
  -webkit-transform: translateZ(-100vw) rotateY(-180deg);
  transform: translateZ(-100vw) rotateY(-180deg);
}

#pages #contact {
  -webkit-transform: translateX(-50vw) translateZ(-50vw) rotateY(-90deg);
  transform: translateX(-50vw) translateZ(-50vw) rotateY(-90deg);
  background: url('/img/camp.jpg') no-repeat center center;
  background-size: cover;
  background-position-y: 100%;
}

/* 1st page */
.main-content {
  margin: auto;
  color: #fff;
  display: flex;
  flex-direction: column;  
  align-items: center;  
  margin-bottom: 5em;
  padding: 1em;
  width: 60%;
  font-size: 2.2rem;
  font-weight: 500;
  font-family: 'Poppins', sans-serif;
  text-shadow: 0 0 5px rgba(255,255,255,0.1);
  padding-top: 3rem;
  padding-bottom: 3rem; 
}

.main-content h1 {
  font-weight:600;
}


.picLP {
  max-width: 28%;
  height: auto; 
  border-radius: 8px;
}

.main-content p{
  padding-top: 2rem;
  font-size: 2rem;
}

/* 2nd face */
.work-content{
  color: #fff;
  margin: auto;
  margin-top: 1em;
  width: 70%;
  text-align: center;
  overflow-y: auto;
  height: 100%;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
  padding-bottom: 6rem;
  font-size: 2.2rem;
  font-weight: 500;
  font-family: 'Poppins', sans-serif;
  text-shadow: 0 0 5px rgba(255,255,255,0.1);
  -webkit-overflow-scrolling: touch;
}

.work-content.logos{
  gap: 0.7rem;
}

.logos img,
.flags img {
  width: 10rem;
  height: auto;
  transition: transform 0.3s ease;
  background-color: #fff;
  padding: 0.7rem;
  border-radius: 10%;
  margin-bottom: 1rem;
}

.logos img:hover {
  transform: scale(1.1);
}

.h-codewars{
  margin-top: 3rem;
}

.codewars{
  transition: transform 0.3s ease;
}

.codewars:hover{
  transform: scale(1.1);
}

.codewars-link {
  display: inline-block; 
  line-height: 0;
}

.flags img:hover{
  transform: scale(1.1);
}
/* 
.hiking-pic{
  margin: auto;
  width: 50%;
  transition: transform 0.3s ease;
}

.hiking-pic:hover{
  transform: scale(1.5);
} */

/* 3rd face */
.about-content{
  color: #fff;
  margin: auto;
  margin-top: 1em;
  width: 60%;
  text-align: center;
  overflow-y: auto;
  height: 100%;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
  padding-bottom: 6rem;
  font-size: 2.2rem;
  font-weight: 500;
  font-family: 'Poppins', sans-serif;
  text-shadow: 0 0 5px rgba(255,255,255,0.1);
}

.about-content h2,
.contact-content h2 {
  font-size: 2.8rem;
  font-weight: 600;
  margin-bottom: 2.5rem;
  color: #fff;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.about-content a,
.contact-content a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  margin: 1rem; 
  padding: 1rem; 
  background: rgba(255,255,255,0.1);
  border-radius: 8px; 
}

.about-content a:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.about-content a:active {
  text-decoration: none;
  color: inherit;
}

.about-content a:visited {
  text-decoration: none;
  color: inherit;
}

.about-content img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.about-content h3,
.contact-content h3 {
  font-size: 2.2rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
  text-align: center;
}

.about-content p {
  font-size: 1.8rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  line-height: 1.5;
  text-align: center;
  max-width: 90%;
}

.about-content a > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1; 
  max-width: 60%; 
}

.about-content h2 {
  margin-bottom: 2rem; 
}

/* 4th face */
.contact-content{
  color: #fff;
  margin: auto;
  margin-top: 1em;
  width: 60%;
  text-align: center;
  overflow-y: auto;
  height: 100%;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
  padding-bottom: 6rem;
  font-size: 2.2rem;
  font-weight: 500;
  font-family: 'Poppins', sans-serif;
  text-shadow: 0 0 5px rgba(255,255,255,0.1);
}

.contact-content span{
  font-size: 3rem;
}

.contact-content img{
  width: 8rem;
}

.contact-content img:hover{
  transform: scale(1.1);
  transition: all 0.3s ease; 
}

.contact-content div{
  margin-top: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}


/* RESPONSIVE DESIGN*/
@media (max-width: 1200px) {
  .main-content,
  .work-content,
  .about-content,
  .contact-content {
    width: 80%;
  }
}

@media (max-width: 992px) {
  .picLP {
    max-width: 40%;
  }
  
  .logos img,
  .flags img {
    width: 8rem;
  }
}

@media (max-width: 768px) {
  .main-content,
  .work-content,
  .about-content,
  .contact-content {
    width: 90%;
    padding: 1rem;
    font-size: 1.8rem;
  }

  body nav #buttons .buttons-navi .button {
    width: 35px;
    height: 35px;
    margin: 0 10px;
  }
  
  body nav #buttons .buttons-navi .button span {
    font-size: 20px;
  }
  
  body nav #buttons .buttons-navi .button .button-next {
    right: 18px;
    top: 6px;
  }
  
  body nav #buttons .buttons-navi .button .button-prev {
    left: 18px;
    top: 6px;
  }
  
  .picLP {
    max-width: 40%;
  }
  
  .main-content h1 {
    font-size: 2.5rem;
  }
  
  .main-content h2 {
    font-size: 2rem;
  }
  
  .main-content p {
    font-size: 1.6rem;
  }
  
  /* Section Skills */
  .logos {
    gap: 0.5rem;
  }
  
  .logos img,
  .flags img {
    width: 6rem;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
  }
  
  /* Section Projects */
  .about-content a {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }
  
  .about-content img {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
  }
  
  .about-content a > div {
    max-width: 100%;
  }
  
  .about-content h3,
  .about-content p {
    text-align: center;
  }
  
  /* Section Contact */
  .contact-content img {
    width: 6rem;
  }
  
  .contact-content span {
    font-size: 2rem;
  }
  
  .contact-content div {
    gap: 0.5rem;
  }
}

@media (max-width: 576px) {
  .main-content,
  .contact-content {
    width: 95%;
    min-height: 100vh;
    font-size: 1.6rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .picLP {
    max-width: 40%;
  }

  .logos img,
  .flags img {
    width: 5rem;
  }
  
  .codewars{
    width: 75%;
  }

  .contact-content img:first {
    width: 5rem;
    margin-top: 20px;
  }
  
  body nav #menu ul li {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .about-content h2 {
    font-size: 2.4rem;
  }
  
  .about-content h3 {
    font-size: 2rem;
  }
  
  .about-content p {
    font-size: 1.6rem;
  }
  
  .about-content img {
    width: 100px;
    height: 100px;
  }
}

/* title */
@media (max-width: 768px) {
  nav .page-title {
    font-size: 1.4rem;
    top: 15px;
    left: 15px;
  }
}