@import url('https://fonts.googleapis.com/css2?family=Advent+Pro:wght@100;300;500&family=Kanit:wght@100;200;300&display=swap');

* {
  box-sizing: border-box
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: 'Kanit', sans-serif;
  font-weight: 200;
  color: #666;
  background-color: #fff;
}

a {
  color: #000;
}

/* header */

.header {
  position: fixed;
  width: 100%;
  text-align: center;
  z-index: 3;
  background: #fff;
  border-bottom: 1px solid rgba(0, 0, 0, .5);
}

.header-wrapper {
  display: inline-block;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  text-align: left;
}

.header ul {
  margin: 0;
  padding: 0;
  list-style: none;
  overflow: hidden;
}

.header li a {
  display: block;
  padding: 10px 20px;
  text-decoration: none;
  color: #666;
  font-size: 0.8em;
  opacity: 0.6;
  transition: 0.3s;
}

.header li a:hover,
.header .menu-btn:hover {
  color: #000;
  opacity: 1;
}

.header li a.active {
  color: #000;
  opacity: 1;
}

.header .logo {
  display: inline-block;
  padding: 17px 0px 17px 20px;
  text-decoration: none;
  color: #000;
  transition: 0.3s;
}

.header .logo:hover {
  opacity: 0.6;
}

.logo .color {
  display: inline-block;
  width: 24px;
  height: 24px;
  -webkit-border-radius: 100%; 
  -moz-border-radius: 100%; 
  border-radius: 100%;
}
.logo .color.a {
  background-color: #FF0000;
}
.logo .color.b {
  background-color: #FF8B00;
}
.logo .color.c {
  background-color: #38C21D;
}
.logo .color.d {
  background-color: #1DA9C2;
}

.header .language {
  display: inline-block;
  margin: 0 0 0 10px;
  color: #666;
}

.header .language span {
  font-weight: 300;
  font-size: 1em;
}

.header .language a {
  opacity: 0.6;
  text-decoration: none;
  transition: 0.3s;
  font-size: .8em;
}

.header .language a:hover {
  opacity: 1;
}

/* menu */

.header .menu {
  clear: both;
  max-height: 0;
  transition: max-height .2s ease-out;
  text-align: right;
}

/* menu icon */

.header .menu-icon {
  cursor: pointer;
  display: inline-block;
  float: right;
  padding: 28px 20px;
  position: relative;
  user-select: none;
}

.header .menu-icon .navicon {
  background: #666;
  display: block;
  height: 2px;
  position: relative;
  transition: background .2s ease-out;
  width: 18px;
}

.header .menu-icon .navicon:before,
.header .menu-icon .navicon:after {
  background: #666;
  content: '';
  display: block;
  height: 100%;
  position: absolute;
  transition: all .2s ease-out;
  width: 100%;
}

.header .menu-icon .navicon:before {
  top: 5px;
}

.header .menu-icon .navicon:after {
  top: -5px;
}

/* menu btn */

.header .menu-btn {
  display: none;
}

.header .menu-btn:checked ~ .menu {
  max-height: 320px;
  padding: 0 0 20px 0;
}

.header .menu-btn:checked ~ .menu-icon .navicon {
  background: transparent;
}

.header .menu-btn:checked ~ .menu-icon .navicon:before {
  transform: rotate(-45deg);
}

.header .menu-btn:checked ~ .menu-icon .navicon:after {
  transform: rotate(45deg);
}

.header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before,
.header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
  top: 0;
}

/* footer */

.footer {
  width: 100%;
  color: #666;
  text-align: center;
  z-index: 3;
  background: #fff;
  border-top: 1px solid rgba(0, 0, 0, .1);
}

.footer-wrapper {
  display: inline-block;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.footer-wrapper p {
  margin: 0;
  padding: 20px;
  font-weight: 100;
}

.footer-wrapper p a {
  text-decoration: none;
  transition: 0.3s;
}

.footer-wrapper p a:hover {
  opacity: 0.6;
}

.footer-wrapper p.responsive {
  display: block;
  text-align: center;
}

.footer-wrapper p.responsive .color {
  width: 20px;
  height: 20px;
}

.footer-wrapper p.artist,
.footer-wrapper p.contact {
  padding: 0 20px 10px;
  text-align: center;
  font-size: .8em;
}

.footer-wrapper p.logo {
  display: none;
}

/* scroll to top button */

.scrollToTopBtn {
  background-color: #000;
  border: 1px solid #000;
  -webkit-border-radius: 100%; 
  -moz-border-radius: 100%; 
  border-radius: 100%;
  color: #fff;
  cursor: pointer;
  font-size: 16px;
  font-weight: 100;
  line-height: 48px;
  width: 48px;
  height: 48px;
  position: absolute;
  bottom: 140px;
  right: 30px;
  z-index: 100;
  opacity: 0;
  transform: translateY(100px);
  transition: all .5s ease;
}
    
.showBtn {
  opacity: 1;
  transform: translateY(0);
} 

.showBtn:hover {
  background-color: rgba(0, 0, 0, 0);
  color: #000;
}

/* content */

.content {
  display: block;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 0;
  color: #666;
}

.left-col {
  display: block;
  width: 100%;
  padding: 0 20px 20px 20px;
}

.left-col .title {
  margin-bottom: 0;
  font-size: 1.5em;
  font-weight: 100;
  line-height: 1.1;
}

.left-col .left-nav li {
  list-style-type: circle;
}

.left-col .left-nav li a {
  color: #666;
  text-decoration: none;
  opacity: 0.6;
  transition: 0.3s;
}

.left-col .left-nav li a:hover {
  color: #000;
  opacity: 1;
}

.left-col .left-nav li.active {
  list-style-type: square;
}

.left-col .left-nav li.active a {
  color: #000;
  opacity: 1;
  list-style-type: square;
}

.right-col {
  display: block;
  width: calc(100% - 60px);
  margin: 0 20px;
  padding: 20px 0;
  border-top: 1px solid rgba(0, 0, 0, .2);
  border-left: none;
}

.right-col ul {
  padding: 0 0 0 20px;
}

.right-col ol {
  padding: 0 0 0 30px;
}

.right-col ul li,
.right-col ol li {
  margin-bottom: 20px;
}

.right-col ul li {
  list-style: none;
}

.right-col ol li {
  padding: 0 0 0 10px;
}

.right-col ul li a,
.right-col ol li a {
  opacity: 0.6;
  transition: 0.3s;
  text-decoration: none;
}

.right-col ul li a span,
.right-col ol li a span {
  font-size: 0.7em;
}

.right-col ul li a:hover,
.right-col ol li a:hover {
  color: #000;
  opacity: 1;
}


/* Responsive video iframe */

.videoWrapper video {
  border: 1px solid rgba(0, 0, 0, .2);
}

/* 48em = 768px */

@media (min-width: 48em) {
  body {
    background-image: url(../images/background-photo.jpg);
  }

  .header {
    height: 65px;
  }

  .header .logo {
    padding: 17px 20px;
  }

  .header .language span {
    font-size: 1.1em;
  }
  
  .header .language a {
    font-size: 1em;
  }

  .header li {
    float: left;
  }

  .header li a {
    padding: 20px 20px 20px 10px;
  }

  .header .menu {
    clear: none;
    float: right;
    max-height: none;
  }

  .header .menu-btn:checked ~ .menu {
    padding: 0;
  }

  .header .menu-icon {
    display: none;
  }

  .logo .color {
    width: 30px;
    height: 30px;
  }

  .footer {
    position: fixed;
    left: 0;
    bottom: 0;
  }

  .footer .footer-wrapper {
    display: flex;
  }

  .footer .footer-wrapper p {
    flex: 1;
  }

  .footer-wrapper p.responsive {
    display: none;
  }

  .footer-wrapper p.artist {
    padding: 20px;
    text-align: left;
  }

  .footer-wrapper p.logo {
    display: block;
  }
  .footer-wrapper p.logo .color {
    width: 20px;
    height: 20px;
  }

  .footer-wrapper p.contact {
    padding: 20px;
    text-align: right;
  }

  .content {
    display: flex;
    padding: 100px 0 150px 0;
  }

  .left-col {
    flex: 1;
    width: auto;
  }

  .left-col .title {
    font-size: 2em;
  }

  .right-col {
    flex: 2;
    padding: 20px 0 20px 40px;
    border-top: none;
    border-left: 1px solid rgba(0, 0, 0, .2);
  }

  .right-col .title {
    margin: 30px 0 0 0;
    font-size: 1.5em;
    font-weight: 100;
  }

  .right-col p.title + p {
    margin-top: 0;
  }

  .scrollToTopBtn {
    bottom: 80px;
  }
}