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

:root{
  --ff-primary:  'Roboto', sans-serif;
  --ff-secondary: 'Open Sans', sans-serif;
  --fw-reg: 300;
  --fw-bold:900;

  --clr-light: #fff;
  --clr-dark: #303030;
  --clr-accent: #16e0bd;

  --fs-h1: 3rem;
  --fs-h2: 2.25rem;
  --fs-h3: 1.25rem;
  --fs-body: 1rem;

  --bs: 0.25em 0.25em 0.75em rgba(0,0,0,.25)
  0.125em 0.125em 0.25em rgba(0,0,0,.15);
}

@media (min-width:800px) {
  :root{
    --fs-h1: 4.5rem;
    --fs-h2: 3.75rem;
    --fs-h3: 1.5rem;
    --fs-body: 1.125rem;
  }
}

/*style general*/
html{
  scroll-behavior: smooth;
}
body{
  background: var(--clr-light);
  color: var(--clr-dark);
  margin: 0;
  font-family: var(--ff-primary);
  font-size: var(--fs-body);
  line-height: 1.6;
}

section{
  padding: 5em 2em;
}
img{
  display: block;
  max-width: 100%;
}

strong{
  font-weight: var(--fw-bold);
font-family: 'Anton', sans-serif;
-webkit-text-fill-color: transparent;
    -webkit-animation: animate 3s ease-in-out infinite;
    animation: animate 3s ease-in-out infinite;
    background: linear-gradient(270deg,#1d71a9,#359d9e,#49bb78,#184aa6);
    -webkit-background-clip: text;
    background-size: 500%;
}
}


:focus{
  outline: 3px solid var(--clr-accent);
  outline-offset: 3px;
}
.btn{
  display: inline-block;
  padding: .5em 2.5em;
  background: var(--clr-accent);
  color: var(--clr-dark);
  text-decoration: none;
  cursor: pointer;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: var(--fw-bold);
  transition: transform 200ms ease-in-out;

}

.btn:hover{
  transform: scale(1.1);
}
h1,
h2,
h3{
  line-height: 1;
  margin: 0;
}

h1{
  font-size: var(--fs-h1)
}
h2{
  font-size: var(--fs-h2)
}
h3{
  font-size: var(--fs-h3)
}

.section__title{
margin-bottom: .25em;
}

.section__title--intro{
  font-weight: var(--fw-reg);
}
.section__title--intro strong{
  display: block;
}
.section__subtitle{
  margin: 0;
  font-size: var(--fs-h3);
}
.section__subtitle--intro,
.section__subtitle--about{
  background: var(--clr-accent);
  padding: .50em 1em;
  font-family: var(--ff-secondary);
  margin-bottom: 1em;
}
.section__subtitle--Work{
  color: var(--clr-accent);
  font-weight: var(--fw-bold);
  margin-bottom: 2em;
}
/*headre*/
.logo{
  max-width: 100px;
}
header{
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: flex !important;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  padding: 1.5rem;
}

.nav{
  position: fixed;
  background: var(--clr-dark);
  color: var(--clr-light);
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;

  transform: translateX(100%);
  transition: transform 250ms  cubic-bezier(.5, 0, .5, 1);
}

.nav__list{
  display: flex;
  list-style: none;
  height: 100%;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav__link{
  color: inherit;
  font-weight: var(--fw-bold);
  font-size: var(--fs-h2);
  text-decoration: none;
  font-size: 35px;

}

.nav__link:hover{
  color: var(--clr-accent);

}
.nav-toggle{
padding: .5em;
background: transparent;
border: 0;
cursor: pointer;
position: absolute;
right: 1em;
top: 1em;
z-index: 1000;

}

.nav-open .nav{
  -webkit-transform: translateX(0);
transform: translateX(0);
}

.nav-open .nav-toggle{
  position: fixed;
}

.nav-open .hamburger{
   -webkit-transform: rotate(0.625turn);
  transform: rotate(.625turn);
}
.nav-open .hamburger::before{
  -webkit-transform: rotate(90deg) translateX(-0.469rem);
          transform: rotate(90deg) translateX(-0.469rem);
}
.nav-open .hamburger::after{
  opacity: 0;
}
.hamburger{

  display: block;
  position: relative;
}
.hamburger,
.hamburger::before,
.hamburger::after{
  background: var(--clr-accent);
  width: 2em;
  height: 3px;
  border-radius: 1em;
  transition: transform 250ms ease-in-out;
}

.hamburger::before,
.hamburger::after{
  content: '';
  position: absolute;
  left: 0;
  right: 0;
}

.hamburger::before{
  top: 6px;
}
.hamburger::after{
  bottom: 6px;
}
/*intro section*/

.intro{
  position: relative;
}

.intro__img{
box-shadow: var(--bs);
}

.section__subtitle--intro{
  display: inline-block;
}
@media (min-width:600px) {
  .intro{
    display: grid;
    width: min-content;
    margin: 0 auto;

    grid-column-gap: 1em;
    grid-template-areas: "img title"
    "img subtitle";
    grid-template-columns: min-content max-content;
  }
  .intro__img{
    grid-area: img;
    min-width: 250px;
    position: relative;
    z-index: 2;

  }
  .section__subtitle--intro{
    align-self: start;
    grid-column: -1 / 1;
    grid-row: 2;
    text-align: right;
    position: relative;
    left: -1em;
    width: calc(100% + 3.5em);


  }
}

/*my services section*/
.my-services{
  background-color: var(--clr-dark);
  background-image: url(pic/22.jpeg);
  background-size: cover;

  color: var(--clr-light);
  text-align: center;

}

.section__title--services{
  color: var(--clr-accent);
  position: relative;
  }
  .section__title--services::after{
  content: '';
  display: block;
  width: 2em;
  height: 1px;
  margin: 0.5em auto 1em;
  background: var(--clr-light);
  opacity: 0.25;
  }

.services{
  margin-bottom: 4em;
}
  .service{
    max-width: 500px;
    margin: 0 auto;
  }
@media (min-width:800px){
  .services{
    display: flex;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
  }

  .service + .service{
    margin-left: 2em;

  }

}

.about-me{
  max-width: 1000px;
  margin: 0 auto;
}

.about-me__img{
  box-shadow: var(--bs);
}
@media (min-width:600px) {
  .about-me{
    display: grid;
    grid-template-columns: 1fr 200px;
    grid-template-areas: "title img"
    "subtitle img"
    "text img";
    grid-column-gap: 2em;
  }
  .section__title--about{
    grid-area: title;
  }

  .section__subtitle--about{
    grid-column: 1 / -1;
    grid-row: 2;
    position: relative;
    left: -1em;
    width:calc(100% + 2em);
    padding-left: 1em;
    padding-right: calc(200px + 4em);
  }
  .about-me__img{
    grid-area: img;
    position: relative;
    z-index: 2;

}
}

/*my work*/
.my-work{
  background-color: var(--clr-dark);
  color: var(--clr-light);
  text-align: center;
}
.section__subtitle--work {
  color: var(--clr-accent);
}
.portfolio{
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(300px,1fr));
  grid-column-gap: 1rem;

}
.portfolio__item{
  background: var(--clr-accent);
  overflow: hidden;
}
.portfolio__img{
  transition: transform 750ms cubic-bezier(.5, 0, .5, 1),
  opacity 250ms linear;
}
.portfolio__item:focus{
  position: relative;
  z-index: 2;
}
.portfolio__img:hover,
 .portfolio__item:focus .portfolio__img{
  transform: scale(1.2);
  opacity: .5;
}
/*footer*/

.footer{
  background: #111;
  color: var(--clr-accent);
  text-align: center;
  padding: 2.5em 0;
  font-size: var(--fs-h3);
}
.footer a{
  color: inherit;
  text-decoration: none;
}

.footer__link{
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
}

.footer__link:hover,
.social-list__link:hover{
  opacity: .7;
}
.footer__link:hover{
  text-decoration: underline;
}

.social-list{
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 2em 0 0;
  padding: 0;
}
.social-list__item{
  margin: 0 .5em;
  border-radius: 50%;
}
.social-list__link{
  padding: .5em;
}


.portfolio-item-individual{
  padding: 0 2em 2em;
  max-width: 1000px;
  margin: 0 auto;
}
.portfolio-item-individual p{
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
ul li:nth-child(3):before{
  background: #4267B2;
}
ul li:nth-child(2):before{
  background: #1DA1F2;
}
ul li:nth-child(1):before{
  background: #E1306C;
}
ul li:nth-child(4):before{
  background: #2867B2;
}
ul li:nth-child(5):before{
  background: #ff0000;
}
ul li:hover:before{
  filter: blur(3px);
  transform: scale(1.2);
  /* box-shadow: 0 0 15px #d35400; */
}
ul li:nth-child(3):hover:before{
  box-shadow: 0 0 15px #4267B2;
}
ul li:nth-child(2):hover:before{
  box-shadow: 0 0 15px #1DA1F2;
}
ul li:nth-child(1):hover:before{
  box-shadow: 0 0 15px #E1306C;
}
ul li:nth-child(4):hover:before{
  box-shadow: 0 0 15px #2867B2;
}
ul li:nth-child(5):hover:before{
  box-shadow: 0 0 15px #ff0000;
}
ul li:nth-child(3):hover{
  color: #456cba;
  box-shadow: 0 0 15px #4267B2;
  text-shadow: 0 0 15px #4267B2;
}
ul li:nth-child(2):hover{
  color: #26a4f2;
  box-shadow: 0 0 15px #1DA1F2;
  text-shadow: 0 0 15px #1DA1F2;
}
ul li:nth-child(1):hover{
  color: #e23670;
  box-shadow: 0 0 15px #E1306C;
  text-shadow: 0 0 15px #E1306C;
}
ul li:nth-child(4):hover{
  color: #2a6cbb;
  box-shadow: 0 0 15px #2867B2;
  text-shadow: 0 0 15px #2867B2;
}
ul li:nth-child(5):hover{
  color: #ff1a1a;
  box-shadow: 0 0 15px #ff0000;
  text-shadow: 0 0 15px #ff0000;
}
.change_content:after{
  content: '';
  animation: changetext 10s infinite linear;
  color: black;
}
@keyframes changetext {
  0%{
    content: "Programmer";
  }
  50%{content: "Front-End Dev";}
}