/* Global Settings */

:root {
  /* Color */
  --color-white: #ffffff;
  --color-light-white: #eeeeee;
  --color-dark-white: #bdbdbd;
  --color-brown: #5e1111;
  --color-dark-brown: #3e1111;
  --color-green: #c2d42c;
  --color-dark-green: #A3DA64;
  --color-black: #4d4d4d;
  --color-dark-grey: #4F5459;
  --color-grey: #616161;
  --color-light-grey: #737979;
  --color-blue: #73aace;
  --color-yellow: #fff7d1;
  --color-orange: #feb546;
  --color-gray: #e4e2e9;
  --color-gun-metal: #2B3132;
  --color-powder-blue: #B2C7F0;


  /* 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;

  /*  Size */
  --size-border-radius: 4px;

  /* Animation */
  --animation-duration: 300ms;

  /* RGB */
  --color-dark-blue-rgba: 21, 21, 48;
  --color-yellow-rgba: 250, 237, 38;
  --color-shadow: 143, 129, 129;
  --color-green-rgba:194, 212, 44;
}

/* Universal Tags */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Open Sans", sans-serif;
  cursor: default;
}

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

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

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

/* Typography */
h1 {
  font-size: var(--font-large);
  font-weight: var(--weight-bold);
  margin: 16px 0;
}

h2 {
  font-size: var(--font-medium);
  font-weight: var(--weight-semi-bold);
  margin: 8px 0;
}

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

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

/* Navbar */
.navbar__logo img {
  height: 50px;
}

.navbar__logo a {
  position: relative;
  transform: translate(5px, 10px);
}

.navbar__logo {
  display: flex;
}

#navbar {
  position: fixed;
  display: flex;
  justify-content: space-between;
  background-color: transparent;
  align-items: center;
  padding: 16px;
  width: 100%;
  transition: all var(--animation-duration) ease-in-out;
}

/* JS ScrollY */
#navbar.navbar--dark {
  background-color: var(--color-gun-metal);
  padding: 8px;
  z-index: 1;
}
/* /JS ScrollY*/
.navbar__menu {
  display: flex;
}
.navbar__logo p {
  font-weight: var(--weight-bold);
}
.navbar__menu__item {
  padding: 8px 12px;
  margin: 0 4px;
  color: var(--color-white);
  cursor: pointer;
  border-radius: var(--size-border-radius);
}

.navbar__menu__item.active {
  border: 1px solid var(--color-white);
}

.navbar__menu__item:hover {
  background-color: var(--color-dark-grey);
  border: 1px solid var(--color-white);
}

.navbar__toggle-btn {
  position: absolute;
  color: var(--color-white);
  right: 32px;
  top: 25px;
  font-size: 24px;
  display: none;
}

/* Home */
#home {
  background: url("imgs/background1.png") center/cover no-repeat;
  padding: 40px;
  padding-top: 100px;
  text-align: center;
  color: var(--color-white);
  box-shadow: 1px 1px 12px #555;
  transition: all var(--animation-duration) ease-in-out;
  min-height: 100vh;
}

.home__content{
  padding-top:10px;
}

.home__avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px solid var(--color-light-white);
}

.home__contact {
  font-size: var(--font-regular);
  font-weight: var(--weight-semi-bold);
  margin: 24px;
  padding: 8px 12px;
  border: 2px solid var(--color-white);
  color: var(--color-white);
}

.home__contact:hover {
  background-color: var(--color-dark-grey);
}

/* Section Common */
.section {
  text-align: center;
  padding: 50px;
  margin: auto;
}

.section__container {
  max-width: 1200px;
  margin: auto;
}

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

.major__icon {
  width: 170px;
  height: 170px;
  line-height: 170px;
  font-size: 70px;
  margin: auto;
  color: var(--color-blue);
  border: 1px solid var(--color-blue);
  border-radius: 50%;
  margin-bottom: 16px;
}

.major__icon i {
  transition: all var(--animation-duration) ease;
}

.major__icon:hover i {
  color: var(--color-brown);
  transform: rotate(-30deg) scale(1.1);
}

.major__title,
.major__description {
  color: var(--color-dark-grey);
}

.major__description {
  font-size: var(--font-small);
}

.job {
  display: flex;
  align-items: center;
  margin-top:50px;
}

.job__description {
  margin: 0 16px;
  text-align: left;
}

.job__logo__box{
  display: flex;
  flex-direction: column;
}

.job__period {
  color: var(--color-light-grey);
}

.job__name {
  font-weight: var(--weight-bold);
  font-size: var(--font-small);
}

.job__period {
  font-size: var(--font-micro);
}


/* Card */
.cards {
  display: flex;
  justify-content: space-evenly;
  flex-wrap: wrap;
}

.card {
  position: relative;
  text-align: left;
  width: 300px;
  height: 400px;
  background-color: var(--color-gun-metal);
  border-radius: var(--border-radius);
  color: var(--color-white);
  padding: 20px 20px 50px 20px;
  margin: 20px 10px 10px 0px;
  box-shadow: 20px 20px 50px rgba(var(--color-shadow), 0.5);
}

.spec {
  padding-left:15px;
  padding-bottom: 10px;
}

.rhombus {
  position: absolute;
  display: flex;
  top: -5%;
  left: 50%;
  transform: translate(-50%);
  width: 50px;
  height: 50px;
  background-color:var(--color-powder-blue);
  -webkit-clip-path: polygon(50% 0%, 100% 25%, 50% 100%, 0 25%);
  clip-path: polygon(50% 0%, 100% 25%, 50% 100%, 0 25%);
  color: var(--color-black);
  font-size: 25px;
  justify-content: center;
  align-items: center;
}

.button {
  position: relative;
  background-color: var(--color-yellow);
  border-radius: var(--border-radius);
  border: 0px;

  /* Design with JS */
  display: inline-flex;
  padding: 10px 30px;
  text-decoration: none;
  letter-spacing: 1px;
  overflow: hidden;
}
.button::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(-50%, -50%);
  width: 0px;
  height: 0px;
  border-radius: 50%;
  background: var(--color-white);
  transition: width 0.5s, height 0.5s;
}
.button:hover::before {
  width: 300px;
  height: 300px;
}

.button span {
  color: var(--color-light-black);
  position: relative;
  z-index: 1;
}


/* about */
.about_select {
  background-color: var(--color-gray);
  height: 70%;
  margin-bottom: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card .about_select h2 {
  position: relative;
}

.about_select.card1 {
  background-image: url("");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.about_select.card2 {
  background-image: url("");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.about_select.card3 {
  background-image: url("");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.about_select.card4 {
  background-image: url("");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.about_select.card5 {
  background-image: url("");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Skills */
#skills {
  background-color: var(--color-light-white);
}

.skillset {
  display: flex;
  background-color: var(--color-light-grey);
  color: var(--color-light-white);
  margin: 20px 0;
}

.skillset__left {
  flex-basis: 60%;
  background-color: var(--color-dark-grey);
  padding: 20px 40px;
}

.skill {
  margin-bottom: 32px;
}

.skillset__right {
  flex-basis: 40%;
}

.tools {
  background-color: var(--color-grey);
}

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

.tools__list, .etc__list{
  text-align: left;
}

.skill__description {
  display: flex;
  justify-content: space-between;
}

.skill__bar {
  width: 100%;
  height: 3px;
  background-color: var(--color-grey);
}

.skill__value {
  height: 3px;
  background-color: var(--color-white);
}

/* Works */
.work__categories {
  margin: 40px;
}

.category__btn {
  border: 1px solid var(--color-dark-white);
  border-radius: var(--size-border-radius);
  font-size: var(--font-regular);
  padding: 8px 48px;
  position: relative;
}

.category__btn.active,
.category__btn:hover {
  background-color: var(--color-gun-metal);
  color: var(--color-white);
}

.category__btn.ative .category__count,
.category__btn:hover .category__count {
  opacity: 1;
  top: 6px;
}

.category__count {
  background-color: var(--color-powder-blue);
  border-radius: 50%;
  color: var(--color-white);
  width: 24px;
  height: 24px;
  line-height: 24px;
  display: inline-block;
  position: absolute;
  top: -25px;
  right: 20px;
  opacity: 0;
  transition: all var(--animation-duration) ease;
}

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

.work__projects.anim-out {
  opacity: 0.2;
  transform: scale(0.96) translateY(40px);
}

.project {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 400px;
  height: 500px;
  margin: 5px;
  background-color: var(--color-dark-white);
  box-shadow: 1px 1px 5px #555;
  transition: opacity var(--animation-duration) ease-in;
}
.project.invisible {
  display: none;
}

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

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

.project:hover .project__description {
  opacity: 0.8;
  transform: translateX(0px);
}
.project__description h3 {
  color: var(--color-powder-blue);
}

.project__description h3:after {
  content: "";
  display: block;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 8px;
  width: 100px;
  height: 2px;
  background-color: var(--color-dark-white);
}

/* Testiomnial */
#testimonial {
  background-color: var(--color-light-white);
}

.testimonials {
  margin: 40px;
}

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

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

/* 홀수 */
.testimonial__avatar:nth-child(odd) {
  margin-right: 40px;
}
/* 짝수 */
.testimonial__avatar:nth-child(even) {
  margin-left: 40px;
}

.testimonial__speech-bubble {
  padding: 18px;
  background-color: var(--color-white);
  border-radius: var(--size-border-radius);
  text-align: left;
}

.testimonial__speech-bubble p {
  color: var(--color-light-grey);
}

.testimonial__speech-bubble a {
  color: var(--color-gun-metal);
}
/* Contact */
#contact {
  background-color: var(--color-gun-metal);
}

.contact__title,
.contact__email,
.contact__rights {
  color: var(--color-white);
}

.contact__title {
  margin: 32px 0;
}

.contact__links {
  font-size: var(--font-large);
  margin: 24px 0;
}

.contact__links i:hover {
  transform: scale(1.1);
  color: var(--color-powder-blue);
  transition: all var(--animation-duration) ease-in;
}

/* Arrow Up */
.arrow-up {
  position: fixed;
  bottom: 0%;
  right: 0%;
  margin: 30px;
  font-size: 50px;
  color: var(--color-gun-metal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--animation-duration) ease-in;
}

.arrow-up.visible {
  opacity: 1;
  pointer-events: visible;
}

/* Responsive Web */
@media screen and (max-width: 972px) {

  .card{
    width: 250px;
  }
}
@media screen and (max-width: 768px) {
  :root {
    /* Font Size */
    --font-large: 30px;
    --font-medium: 18px;
    --font-regular: 16px;
    --font-small: 14px;
    --font-micro: 12px;
  }

  .navbar__toggle-btn {
    display: block;
    top: 30px;
    right: 16px;
    font-size: var(--font-medium);
  }

  #navbar {
    flex-direction: column;
    align-items: flex-start;
    box-shadow: 1px 1px 12px #555;
    background-color: var(--color-gun-metal);
    z-index: 1;
  }

  #navbar.navbar--dark {
    padding: 16px;
  }
  .navbar__menu {
    flex-direction: column;
    text-align: center;
    width: 100%;
    display: none;
  }

  .navbar__menu.open {
    display: block;
  }

  .about__majors {
    flex-direction: column;
    margin-top: 30px;
    margin-bottom: 0px;
  }

  .major {
    margin-bottom: 38px;
  }

  .skillset {
    flex-direction: column;
  }

  .category__btn {
    margin: 4px 0;
  }
  .project {
    flex-grow: 1;
  }

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

  /* 홀수 */
  .testimonial__avatar:nth-child(odd) {
    margin: 0px;
    margin-bottom: 10px;
  }
  /* 짝수 */
  .testimonial__avatar:nth-child(even) {
    order: -1;
    margin: 0px;
    margin-bottom: 10px;
  }
  .testimonial {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 65px;
  }

  .work__categories {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .category__btn {
    width: 100%;
    padding: 10px 4px;
    text-align: center;
    margin-bottom: 10px;
  }

  .arrow-up {
    width: 50px;
    height: 50px;
    font-size: 30px;
    line-height: 50px;
    right: 5px;
    bottom: 16px;
    margin: 5px;
  }
  .job{
    flex-direction: column;
  }

  h1{
    font-size: var(--font-medium)
  }

  h2{
    font-size: var(--font-small)
  }

  #home{
    background:url(imgs/background2.jpg)
  }

  span{
    font-size:var(--font-micro)
  }

  .card{
    height:500px;
  }
  .about_select img{
    width: 40% !important;
    height: 60% !important;
  }
  .rhombus{
    width: 60px;
    height: 60px;
  }

  .job__description{
    margin:10%;
    margin:auto;
  }

  .job__explication{
    font-size:var(--font-small)
  }


  .category__count{
    display: none;
  }

  .home__content{
    padding-top:10px;
  }

  .about__jobs{
    padding-top:50px;
  }

  .work__projects .project{
    margin-bottom:20px;
  }

}