:root{
    /* color */
    --color-white:#fafafa;
    --color-light-green:#48494e;
    --color-dark-green:#0d0d0f;
    --color-green:#1f1f22;
    --color-gray:#d7dbdb;
    --color-dark-gray:#a6a9a9;
    --color-black:#000000;
    /* font size */
    --font-large:48px;
    --font-medium:28px;
    --font-regular: 18px;
    --font-small:16px;
    --font-micro:14px
    /* font weight */
    --weight-bold:700;
    --weight-semi-bold:600;
    --weight-regular:400;
    --weight-light:200;

    /* size */
    /* border */
    --border-radius:6px;
  /* Animation */
    --animation-duration:300ms;

    

}

/* Universal Tag */
*{
    box-sizing: border-box;
    font-family: 'Courier Prime';
}

/* Typography */
h1{
    font-size: var(--font-large);
    font-weight: var(--weight-bold);
    color: var(--color-black);
    margin:16px 0px;
}
h2{
    font-size:var(--font-medium);
    font-weight: var(--weight-semi-bold);
    color:var(--color-black);
    margin: 8px 0px;
}

h3{
    font-size: var(--font-regular);
    font-weight: var(--font-regular);
    color:var(--color-black);
    margin: 8px 0px;
}

p{
    font-size: var(--font-regular);
    font-weight: var(--font-regular);
    color: var(--color-black);
    margin: 4px 0;
}

ul{
    list-style-type: none;
    padding-left: 0;
}

a{
text-decoration: none;
color: var(--color-white);
}

button{
    cursor: pointer;
    border: none;
    outline:none;
    background-color: transparent;
}

body{
    margin:0;
    cursor: default;
    
}




/* NavBar */

#navbar {
    position: fixed;
    width: 100%;
    display: flex;
    justify-content: center;
    flex-direction: column;
    background-color:transparent;
    color:var(--color-dark-green);
    align-items: center;
    transition: all var(--animation-duration) ease-in-out;
    z-index: 1;
}

#navbar.navbar--dark{
    background-color:var(--color-dark-green);
    background: rgba(13, 13, 15,.93);
    color: var(--color-white);
    
}

#navbar.navbar--transparent{
    opacity: 0;
    
}



.navbar__menu{
    display: flex;
}

.navbar__menu__icon{
    padding: 0px 12px;
    font-size: 20px;
    font-weight: var(--weight-semi-bold);
    cursor: pointer;
    animation: future-breathe 4s ease-in-out infinite;
}

@keyframes future-breathe {
  0%,
  100% {
    color: #00fff2;
    text-shadow: 0 0 4px #00fff2, 0 0 10px #00fff2;
    opacity: 0.7;
  }
  33% {
    color: #d946ef;
    text-shadow: 0 0 6px #d946ef, 0 0 16px #d946ef;
    opacity: 1;
  }
  66% {
    color: #3b82f6;
    text-shadow: 0 0 6px #3b82f6, 0 0 16px #3b82f6;
    opacity: 1;
  }
}

.navbar__menu__icon:nth-of-type(1) {
  animation-delay: 0s;
}
.navbar__menu__icon:nth-of-type(2) {
  animation-delay: 0.3s;
}
.navbar__menu__icon:nth-of-type(3) {
  animation-delay: 0.6s;
}
.navbar__menu__icon:nth-of-type(4) {
  animation-delay: 0.9s;
}
.navbar__menu__icon:nth-of-type(5) {
  animation-delay: 1.2s;
}
.navbar__logo{
    padding-top: 10px;
}
.navbar__logo img{
    width: 189px;
    height: 125px;
}


.navbar__menu__icon:hover{
/* border: 1px var(--color-white);
border-style: dotted;
border-radius: var(--border-radius); */
text-decoration: var(--color-light-green) wavy underline;
font-style:italic;
}

.navbar__toggle-btn{
    position:absolute;
   top: 105px;
   right: 20px;
    color:var(--color-white);
    font-size: 20px;
    display: none;
}


/* Home */
#home{
    background: url('Images/Texture4-1.jpeg?v=3')center/cover;
    padding:40px;
    padding-top:300px;
    text-align: center;
   
}


.hoem__avatar{
    border-radius: 50%;
    width:250px;
    border: 10px var(--color-green) solid;
    cursor: pointer;
}

.home__title{
     color:var(--color-dark-green);
     text-shadow: 4px 1px 2px var(--color-white);
     
}

.home__description{
     color:var(--color-dark-green);
     
}

.home__button{
    font-weight:var(--weight-semi-bold);
    margin: 24px;
    padding:10px 20px;
    background-color: var(--color-green);
    color: var(--color-white);
    border-radius: 30px;
    transition: background-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.home__button:hover{
    font-style: italic;
    background-color:var(--color-light-green);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
    transform: translateY(-2px);
}

/* About */

.section{
    text-align: center;
    padding:50px;
    margin:auto;
    max-width: 1200px;
    
}


/* Skill */

#skills {
  background-color: var(--color-gray);
}

.skillset {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--color-dark-green);
  margin: 20px 0;

}

.skillset__title {
  color: var(--color-dark-green);
}
.skillset__left {
  width: 100%;
  padding: 20px 150px;
  justify-content: center;
}

.skill {
  margin-bottom: 32px;
}
.skill__description {
  display: flex;
  justify-content: space-between;
}

.skill__bar {
  width: 100%;
  height: 10px;
  background-color: var(--color-grey);
}

.skill__value {
  height: 5px;
  background-color: var(--color-dark-green);
}

.skill__bar--slide {
  position: relative;
  overflow: hidden;
}

.skill__value--slide {
  position: absolute;
  top: 0;
  width: 100%;
  animation: skill-fade 1.8s ease-in-out infinite alternate;
}

@keyframes skill-fade {
  from {
    opacity: 0.15;
  }
  to {
    opacity: 1;
  }
}

.skill:nth-of-type(1) .skill__value--slide {
  animation-delay: 0s;
}
.skill:nth-of-type(2) .skill__value--slide {
  animation-delay: 0.2s;
}
.skill:nth-of-type(3) .skill__value--slide {
  animation-delay: 0.4s;
}
.skill:nth-of-type(4) .skill__value--slide {
  animation-delay: 0.6s;
}
.skill:nth-of-type(5) .skill__value--slide {
  animation-delay: 0.8s;
}

.tools--fade {
  animation: skill-fade 5.4s ease-in-out 1s infinite alternate,
    tools-shadow-fade 5.4s ease-in-out 1s infinite alternate;
}

@keyframes tools-shadow-fade {
  from {
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  }
  to {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.45), 0 0 20px rgba(255, 255, 255, 0.25);
  }
}

.skillset__right {
  width: 100%;
  margin-top:10px;
  display: flex;
  justify-content: center;
}

.tools {
  
  border: 5px solid var(--color-white);
  margin:auto;
  width: 300px;
  height: 200px;
  text-align: left;

}


.skillset__title{
    text-align: center;
}



.tools,
.etc {
  padding: 20px;
}






/* Work */
.about__major{
    display:flex;
    justify-content: space-between;
    margin: 80px 0px 80px 0px; 
}

.major__icon{
    width: 150px;
    height:150px;
    font-size: 60px;
    line-height: 150px;
    margin: auto;
    margin-bottom: 20px;
    color:var(--color-green);
    border: 4px solid var(--color-dark-green);
    border-radius: 50%;
    transition: border-width 300ms linear;
    
}

.major__icon i {
    transition: all 300ms ease;
}
.major__icon i:hover{
    color:var(--color-light-green);
    transform: scale(1.5);
    
}


.major__title{
    font-size: var(--font-medium);
    font-weight: var(--weight-semi-bold);
}

.job{
    display:flex;
    align-items: center;
    size:var(--font-regular)
}


.job__name{
    margin:0px 20px 0px 20px;
    text-align: left;
}

.work__btn{
font-size: var(--font-regular);
padding: 20px;
border-radius:15px;
position: relative;
transition: color 200ms ease;
}

.work__btn.selected,
.work__btn:hover{
    color: var(--color-dark-green);
    text-decoration: wavy underline;
    
    /* border: 2px solid var(--color-dark-green);
    border-radius: 20px; */
}


.work__btn.selected .category__counts,
.work__btn:hover .category__counts{
    opacity:1;
    top:0;
}


.category__counts{

    /* span 은 글짜 크기에 딱 맞게 형성되기 때문에 display inline-block 으로 변경해줘야함 */
    line-height: 32px; 
    margin-left: 5px;
    background-color: orange;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: inline-block;
    position: absolute;
    top: -20px;
    right:-15px;
    opacity:0;
    transition: all var(--animation-duration) ease-in;

    
}

.work__projects{
    display: flex;
    flex-wrap: wrap;
    justify-content:center;
    opacity: 1;
    transition: all var(--animation-duration) ease-out;
    
}

.work__projects.animationOut{
    opacity:0.6 ;
    transform: scale(0.9) translateY(40px);
}


.project{
    position: relative;
    display: flex;
    justify-content: center;
    width:300px;
    height:200px;
    margin: 5px;
    background: white;
}

.project__img{
    max-width:100%;
    max-height:100%;
    align-self: center;
}

.project__description{
    position:absolute;
    top:0;
    left:0;
    background-color:black;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    transition: all var(--animation-duration) ease-in;
    transform: translateY(10px);

}

.project:hover .project__description{
    opacity: 0.8;
    transform: translateY(0px);
}

.project.invisible{
    display: none;
}





/* Testimonials */
/* #testimonials{
    /* background-color:var(--color-gray); */



.testimonials{
    margin:42px ;
}

.testimonial{
       display: flex;
       margin: 32px 0;
}

.testimonial__avatar{
    width: 150px;
    height: 150px;
    border-radius:50%;
    
}

.testimonial__avatar:nth-child(odd){
    margin-right:40px;
}

.testimonial__avatar:nth-child(even){
    margin-left:40px;
}

.testimonial__speech-bubble{
    padding:18px;
    border: 3px solid var(--color-dark-green);
     background-color: var(--color-white);
     border-radius:var(--border-radius);
}

.testimonial__speech-bubble a {
    color: var(--color-dark-gray);
    font-weight: var(--weight-semi-bold);
}



/* Contact */
#contact{
    background-color: #2e2f33;
    background-image: radial-gradient(circle at center, rgba(255, 255, 255, 0.06), transparent 70%);
    border-top: 3px dashed #55565c;
    border-bottom: 3px dashed #55565c;
    padding-top:30px;
    padding-bottom:30px;
    text-align: center;

}

.contact__title,
.contact__icon,
.contact__email{
    color: var(--color-white);
    margin: 10px;
}

.contact__email{
    font-weight: var(--weight-light);
}

.contact__icon{
    font-size: var(--font-medium);
    margin: 25px 20px 0px 20px;
    padding-bottom: 20px;
}

.contact__icon a:hover{
    transform: scale(1.5);
}

.contact__icon a{
    transition: ease-in 200ms;
}


.arrow__btn{
    font-size: 40px;
    color: var(--color-white);
    background-color:var(--color-dark-green);
    border: 5px solid var(--color-dark-green);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    position: fixed;
    right:30px;
    bottom: 10px;
    opacity: 0; /*arrow_btn.visible 상태가 block 으로 되어 있기 때문에 block은 애니매이션이 안됨, 그래서 opacity를 내려서 사용자에게 보여주지 않음*/
    transition: all 300ms ease-in;
    pointer-events: none; /* arrow 를 opacity로 없앴기 때문에 사용자 눈에는 안보이지만 arrow 가 자리를 잡고 있어 누를수 있는 상태임, 그것을 없애주는 용도 */
}


.arrow__btn.visible{
display: block;
padding: 0px;
opacity:1;
pointer-events: auto;

}



/* MEDIAAAAAAAAAA */
/* For below 768px screen width */
@media screen and (max-width: 768px){
html,body{
    overflow-x: hidden;
}
:root{
     /* font size */
    --font-large:30px;
    --font-medium:18px;
    --font-regular: 16px;
    --font-small:14px;
    --font-micro:12px

}

#home{
    padding-top:200px;
}

.hoem__avatar{
    border-radius: 50%;
    width:150px;
    border: 5px var(--color-green) solid;

}


.section{
    padding:16px;
    padding-top: 125px;
}

    .navbar__toggle-btn{
        display: block;
        color: var(--color-white);
    }
    #navbar{
        flex-direction: column;
        align-items: flex-start;
        background-color:rgba(13, 13, 15,.93);
    }

    .navbar__menu{
         flex-direction: column;
         width: 100%;
        text-align: center;
        display: none;
        color: var(--color-white);

    }

    .navbar__menu.open{
        display: block;
       
    }

    .navbar__menu__icon{
        margin-bottom: 10px;
    }

    .navbar__logo{
    display: block;
   margin: auto;
    width: 189px;
 
    
}

.about__major{
    flex-direction: column;

}
.major{
    margin-bottom: 20px;
}


.work__projects{
    flex-direction: column;
    align-items: center;
}
.project{
    flex-grow: 1;
}

.testimonial__avatar{
    width: 80px;
    height: 80px;;
}


/* Testimonial colum center */
.testimonial{
    flex-direction: column;
    align-items: center;
}

.testimonial__speech-bubble{
    order:1;
}

.testimonial__avatar:nth-child(even),
.testimonial__avatar:nth-child(odd){
    margin: 0px;
    margin-bottom: 10px;
}


/* finish line  */

.testimonials{
    margin:0px ;
}


.skillset__left {
  flex-basis: 100%;
  padding: 20px 0px;
  justify-content: center;
}

.arrow__btn{
    font-size: 30px;
    color: var(--color-white);
    background-color:var(--color-dark-green);
    border: 5px solid var(--color-dark-green);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    position: fixed;
    right:10px;
    bottom: 10px;

}
}