style.css

/* Colors */
:root {
  --text-night: white;
  --text-day: #334155;
  --back-night: #112240;
  --back-day: #F1F5F9;
  --s-night:  #A6B6F8;
  --s-day: #F2737B;
  --m-back-night: #112240;
  --m-back-day: #F8FAFC;
}

/*Helpers*/
.mt{margin-top: 50px;}
.big-text{font-size: 40px; font-weight: 900; line-height: 40px}
.normal-text{font-size: 22px; font-size-adjust: auto; line-height: 30px}
.small-text{font-size: 16px; line-height: 25px}
.bold{font-weight: bold;}
.tp{color: var(--text-night)}
.ts{color: var(--s-night)}

/*Base sytle*/
html{
  scroll-behavior: smooth;
  color: var(--text-night);
}


body{
  overflow-x: hidden;
  font-family: 'Poppins', sans-serif;
  font-size: 18px;
  background-color: var(--back-night);
  color: var(--text-night);
}

body.day{
  background-color: var(--back-day);
  color: var(--text-day);
}

a {
  color: var(--s-night);
}

h1, h2, h3, h4, h5 {
  padding: 5px;
  color: var(--text-night);;
}

p {
  line-height: 25px;
  padding: 5px;
  color: #c3c5c4;
  font-weight: 300;
}

.day a{
  color: var(--s-day);
}

.day p{
  color: var(--text-day);
}

.day .tp{
  color: var(--text-day);
}

.day .ts{
  color: var(--s-day);
}

 /*Custom scroll bar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-thumb {
    border: 8px solid rgba(255,255,255,0.2);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.3);
    cursor: pointer;
}

body.day ::-webkit-scrollbar-thumb {
    border: 8px solid red !important;
}

body.day ::-webkit-scrollbar-thumb:hover {
    background-color: red !important;
}

/*Header*/
.header{
  width: 100%;
  position: fixed;
  top:0;
  z-index: 8;
  padding: 15px;
  display: flex;
  transition: all 0.3s ease;
}

.menu{
  position: absolute;
  top: 0;
  right:-100%;
  height: 100vh;
  width: 100%;
  padding-top: 80px;
  transition: all 0.7s cubic-bezier(.215, .61, .355, 1);
  background-color: var(--m-back-night);
}

.menu li {display: block;}
.menu li a {
  padding: 20px 100px;
  font-size: 24px;
  line-height: 35px;
  display: block;
  text-align: right;
  text-decoration: none;
}

.menu_open{
  right: 0%;
}

.day .menu{
  background-color: var(--m-back-day);
}

@media (max-width: 768px){
  .menu li a{
    text-align: center;
    font-size: 28px;
  }
}

.hamburger{
  display: block;
  width: 30px;
  height: 30px;
  position: absolute;
  right: 20px;
  top: 20px;
  z-index: 1;
  cursor: pointer;
}

.hamburger span{
  height: 3px;
  width: 100%;
  display: block;
  margin-bottom: 5px;
  border-radius: 10px;
  background-color: var(--s-night);
}

.day .hamburger span{
  background-color: var(--s-day);
}

/*Animation hamburger*/
.active span:nth-child(1) {
  animation: ease .7s top-open forwards;
}

.not-active span:nth-child(1) {
  animation: ease .7s top-close forwards;
}

.active span:nth-child(2) {
  animation: ease .7s hide forwards;
}

.not-active span:nth-child(2) {
  animation: ease .7s show forwards;
}

.active span:nth-child(3) {
  animation: ease .7s bottom-open forwards;
}

.not-active span:nth-child(3) {
  animation: ease .7s bottom-close forwards;
}

@keyframes top-open {
  0% {
    transform: rotate(0);
  }
  50% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(45deg)  translateY(11px);
  }
}

@keyframes bottom-open {
  0% {
    transform: rotate(0);
  }
  50% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(-45deg) translateY(-11px);
  }
}

@keyframes top-close {
  0% {
    transform: rotate(45deg)  translateY(11px);
  }
  50% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(0);
  }
}

@keyframes bottom-close {
  0% {
    transform: rotate(-45deg) translateY(-11px);
  }
  50% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(0);
  }
}

@keyframes hide {
  50% {
    transform: scale(0);
  }
  100% {
    transform: scale(0);
  }
}

@keyframes show {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(0);
  }
  100% {
    transform: scale(1);
  }
}

.toggle{
  position: fixed;
  bottom: 15px;
  right: 10px;
  display: flex;
  align-items: center;
  z-index: 999;
}

.toggleup{
  bottom: 40px;
}

@media (max-width: 402px){
  .toggleup{
    bottom: 50px;
  }
}

.toggle-input {
    position: relative;
    width: 40px;
    height: 22px;
    appearance: none;
    background-color: #ccc;
    outline: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.toggle-input:checked {
    background-color: var(--s-day);
}

.toggle-input::before {
    content: "";
    position: absolute;
    top: 2.5px;
    left: 4px;
    width: 17px;
    height: 17px;
    background-color: #fff;
    border-radius: 50%;
    transition: transform 0.3s;
}

.toggle-input:checked::before {
    transform: translateX(16px);
}

/*Intro*/
.intro{
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
}

.intro_content{
  margin: auto;
  width: 100%;
  position: relative;
  display: inline-block;
  text-align: center;
  align-items: center;
}

.intro_content ul li{
  display: inline;
}

.typetext{
  padding: 10px;
  font-size: 60px;
  line-height: 100px;
  font-weight: 900;
}

.blinker{
  font-size: 60px;
  border-right: 4px solid  var(--text-night);;
  animation: blinker 1s infinite;
}

.day .blinker{
  border-right: 4px solid var(--text-day);
}

@media (max-width: 768px){
  .typetext{
    font-size: 50px;
  }
  .blinker{
    font-size: 50px;
  }
}

@keyframes blinker{
  50%{
    opacity: 0;
  }
}

.arrow {
  position: fixed;
  display: inline-block;
  left: 0;
  right: 0;
  text-align: center;
  bottom: 10px;
  padding: 20px;
  cursor: pointer;
  animation: bounce 3s infinite;
}

.arrow i {
  width: 40px;
  height: 40px;
}

.fade {
  opacity: 0;
  transition: 0.5s all ease-out;
}

@keyframes bounce {
    0% { transform: translateY(0); }
    50%  { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

/*Cover*/
.cover{
  width: 100%;
  height: 100vh;
  padding: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cover_title{
  width: 30%;
  padding: 50px 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cover_text{
  width: 70%;
  padding: 50px 50px;
  text-align: right;
}

@media (max-width: 860px){
  .cover{
    flex-wrap: wrap;
    display: inline-block;
    padding: 50px 80px;
  }

  .cover_title,
  .cover_text{
    width: 100%;
    padding: 30px 0px;
  }
}

/*Vertical timeline*/
.timeline_title{
  width: 100%;
  padding: 50px;
  line-height: 30px;
  text-align: center;
}

.timeline{
  width: 100%;
  position: relative;
  margin: auto;
  padding: 40px 0;
  max-width: 1000px;
  box-sizing: border-box;
}

/*barra laterale*/
.timeline:before{
  content: '';
  position: absolute;
  left:50%;
  width:2px;
  height: 90%;
  background: #c5c5c5;
}

.day .timeline:before{
    background: #A8A8A8;
}

.timeline ul li{
  position: relative;
  width: 50%;
  padding: 8px 30px;
  box-sizing: border-box;
}

.timeline ul li:nth-child(odd){
  float: left;
  text-align: right;
  clear: both;
}

.timeline ul li:nth-child(even){
  float: right;
  text-align: left;
  clear: both;
}

.timeline_content{
  padding-bottom: 8px;
}

.timeline ul li:nth-child(odd):before{
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  top: 28px;
  right: -8px;
  background: var(--s-night);
  border-radius: 50%;
  box-shadow: 0 0 0 3px;
  animation: pulse 1.5s infinite;
}

.timeline ul li:nth-child(even):before{
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  top: 28px;
  left: -6px;
  background: var(--s-night);
  border-radius: 50%;
  box-shadow: 0 0 0 3px;
  animation: pulse 1.5s infinite;
}

.day .timeline ul li:nth-child(odd):before{
    background: var(--s-day);
    animation: pulseday 1.5s infinite;
}

.day .timeline ul li:nth-child(even):before{
    background: var(--s-day);
    animation: pulseday 1.5s infinite;
}

@media(max-width: 768px){
  .timeline{
    padding-bottom:0;
  }

  .timeline:before{
    left:20px;
  }

  .timeline ul li{
    padding:8px 100px;
  }

  .timeline ul li:nth-child(odd),
  .timeline ul li:nth-child(even)
  {
    width:100%;
    text-align:left;
    padding-left:50px;
  }

  .timeline ul li:nth-child(odd):before,
  .timeline ul li:nth-child(even):before
  {
    left:14px;
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0px rgba(241, 231, 254, 0.3);
  }
  100% {
    box-shadow: 0 0 0 4px rgba(241, 231, 254, 0.3);
  }
}

@keyframes pulseday {
  0% {
    box-shadow: 0 0 0 0px rgba(242, 111, 123, 0.3);
  }
  100% {
    box-shadow: 0 0 0 4px rgba(242, 111, 123, 0.3);
  }
}

/*Contacts*/
.contacts{
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-links a{
	display: inline-block;
	height: 40px;
	width: 40px;
	margin:0 8px 8px 0;
	line-height: 40px;
	border-radius: 50%;
	color: var(--text-night);
  background-color: rgba(255,255,255,0.2);
	transition: all 0.5s ease;
  text-align: center;
  align-items: center;
  justify-content: center;
}

.day .social-links a{
  color: var(--text-day);
  background-color: rgba(128,128,128,0.1);
}

.social-links a:hover{
	color: var(--back-night);
	background-color: var(--text-night);
}

.day .social-links a:hover{
	color: var(--back-day);
	background-color: var(--text-day);
}

footer {
  position: relative;
  width: 100%;
  bottom: 0;
  font-size: 12px;
  padding: 15px;
  align-items: center;
  text-align: center;
  justify-content: center;
}

/*Content*/
.content{max-width: 900px; margin: 40px auto;}

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