/* CSS Document */

@import url(https://fonts.googleapis.com/css?family=Open+Sans);
@import url(https://fonts.googleapis.com/css?family=Bree+Serif);

body {
  display: flex;
  justify-content: center;
  height: 100vh;
  padding: 0px;
  margin: 0px;
  overflow: hidden;
  font-family: "Nanum Gothic", sans-serif;
  perspective: 700px;
  background: #ccffcc;
  * {
    box-sizing: border-box;
    transform-style: preserve-3d;
  }
  @media (min-width: 666px) {
    nav {
      width: 100%;
      position: absolute;
      background: #222;
      margin: 0px;
      max-width: 100%;
      z-index: 2;
    ol {
        width: 100%;
        display: flex;
        justify-content: space-around;
        padding: 0px;
        margin: 0px;
        transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
        li {
          display: inline-block;
          padding: 30px;
          flex-grow: 1;
          text-align: center;
          position: relative;
          transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
          &:nth-of-type(4) {
            ol {
              &:after {
                content: "\f06d";
                font-family: FontAwesome;
              }
            }
          }
          &:hover {
            ol {
              &:before {
                content: "";
                position: absolute;
                width: 20px;
                height: 20px;
                display: block;
                bottom: -30px;
                left: -15px;
                transform: rotate(45deg) scale(0.5);
                border: 3px solid orange;
                border-color: orange transparent transparent orange;
                background: linear-gradient(
                  45deg,
                  transparent -50%,
                  transparent 45%,
                  orange 45%,
                  orange 55%,
                  transparent 55%,
                  transparent 125%
                );
                background-repeat: no-repeat;

                animation: clipin 0.4s ease-in 1 forwards;
                animation-delay: 0.2s;
                -webkit-clip-path: polygon(
                  35% 35%,
                  35% 0,
                  35% 0,
                  35% 35%,
                  0 35%,
                  0 35%
                );
                clip-path: polygon(
                  35% 35%,
                  35% 0,
                  35% 0,
                  35% 35%,
                  0 35%,
                  0 35%
                );
              }
            }
            li {
              position: relative;
              &:first-of-type {
                &:before {
                  display: none;
                }
              }
              &:before {
                content: "";
                position: absolute;
                width: 20px;
                height: 20px;
                display: block;
                right: -30px;
                top: -15px;
                left: auto;
                transform: rotate(-45deg) scale(0.5);
                border: 3px solid red;
                border-color: red transparent transparent red;
                background: linear-gradient(
                  45deg,
                  transparent -50%,
                  transparent 45%,
                  red 45%,
                  red 55%,
                  transparent 55%,
                  transparent 125%
                );
                background-repeat: no-repeat;

                animation: clipin 0.4s ease-in 1 forwards;
                -webkit-clip-path: polygon(
                  35% 35%,
                  35% 0,
                  35% 0,
                  35% 35%,
                  0 35%,
                  0 35%
                );
                clip-path: polygon(
                  35% 35%,
                  35% 0,
                  35% 0,
                  35% 35%,
                  0 35%,
                  0 35%
                );
                @keyframes clipin {
                  0% {
                    -webkit-clip-path: polygon(
                      35% 35%,
                      35% 0,
                      35% 0,
                      35% 35%,
                      0 35%,
                      0 35%
                    );
                    clip-path: polygon(
                      35% 35%,
                      35% 0,
                      35% 0,
                      35% 35%,
                      0 35%,
                      0 35%
                    );
                  }
                  50% {
                    -webkit-clip-path: polygon(
                      35% 35%,
                      35% 0,
                      35% 0,
                      35% 35%,
                      0 35%,
                      0 35%
                    );
                    clip-path: polygon(
                      35% 35%,
                      35% 0,
                      35% 0,
                      35% 35%,
                      0 35%,
                      0 35%
                    );
                  }
                  75% {
                    -webkit-clip-path: polygon(
                      35% 35%,
                      35% 0,
                      100% 0,
                      100% 100%,
                      0 100%,
                      0 35%
                    );
                    clip-path: polygon(
                      35% 35%,
                      35% 0,
                      100% 0,
                      100% 100%,
                      0 100%,
                      0 35%
                    );
                  }
                  100% {
                    -webkit-clip-path: polygon(
                      100% 100%,
                      100% 0,
                      100% 0,
                      100% 100%,
                      0 100%,
                      0 100%
                    );
                    clip-path: polygon(
                      100% 100%,
                      100% 0,
                      100% 0,
                      100% 100%,
                      0 100%,
                      0 100%
                    );
                  }
                }
              }
            }
          }
          ol {
            &:after {
              content: "\f25b";
              font-family: FontAwesome;
              vertical-align: center;
              font-size: 150px;
              color: #ff8000;
              position: absolute;
              padding-top: 40px;
              height: calc(100% - 40px);
              width: 100%;
              left: -100%;
              top: 0;
              background: orange;
              transform: rotate(-90deg);
              transform-origin: 0% 0%;
              transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
            }
          }
          @for $i from 1 through 10 {
            &:nth-of-type(#{$i}) {
              &:hover {
                a {
                  color: #222;
                }
                ol {
                  li {
                    a {
                      color: #fff;
                    }
                  }
                }
                &:before {
                  transform: translateY(0) rotate(0deg);
                }
              }
              &:before {
                content: "";
                position: absolute;
                width: 100%;
                height: 100%;
                background: adjust-hue(red, ($i * 10));
                top: 0;
                left: 0;
                z-index: -1;
                transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
                transform: translateY(-125%) rotate(-5deg);
              }
            }
          }
          &:hover {
            ol {
              transform: translateY(0) translateZ(-1px);
              &:after {
                transform: rotate(0deg);
              }
              li {
                &:nth-of-type(1n) {
                  transform: none;
                  margin: 0px;
                  &:hover {
                    &:after {
                      opacity: 1;
                      top: 0vh;
                    }
                  }
                }
              }
            }
          }
          a {
            color: #fff;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-weight: 900;
          }
          ol {
            display: block;
            position: absolute;
            top: 100%;
            transform: translateY(-110%) translateZ(-5px);
            transform-origin: top right;
            z-index: -1;
            width: 120%;
            left: 0;
            &:hover {
              li {
                &:nth-of-type(1n) {
                  &:hover {
                    padding: 40px 30px;
                  }
                }
              }
            }
            li {
              display: block;
              margin: 20px 0;
              a {
                font-size: 14px;
              }
              &:before {
                display: none;
              }
              @for $i from 1 through 10 {
                &:nth-of-type(#{$i}) {
                  transition-delay: #{$i/10}s;
                  background: adjust-hue(red, ($i * 10));
                  &:before {
                    animation-delay: #{$i/20}s;
                    background: linear-gradient(
                      45deg,
                      transparent -50%,
                      transparent 45%,
                      adjust-hue(red, ($i * 10)) 45%,
                      adjust-hue(red, ($i * 10)) 55%,
                      transparent 55%,
                      transparent 125%
                    );
                    background-repeat: no-repeat;
                    border-color: adjust-hue(red, ($i * 10))
                      transparent
                      transparent
                      adjust-hue(red, ($i * 10));
                  }
                }
              }
              &:first-of-type {
                margin-top: 0;
              }
              &:nth-of-type(even) {
                transform-origin: top left;
                transform: rotate(5deg);
              }
              &:nth-of-type(odd) {
                transform-origin: top right;
                transform: rotate(-5deg);
              }
            }
          }
        }
      }
    }
  }
  @media (max-width: 666px) {
    nav {
      position: absolute;
      top: 0;
      height: 45px;
      left: 0;
      background: #222;
      width: 100%;
      &:hover {
        ol {
          li {
            &:nth-of-type(1n) {
              transform: rotate(0deg);
              margin: 0px;
              transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
            }
            @for $i from 1 through 10 {
              &:nth-of-type(#{$i}) {
                transition-delay: #{$i/15}s;
                &:hover {
                  a {
                    color: adjust-hue(red, ($i * 10));
                  }
                }
              }
            }
          }
        }
        &:before {
          transform: rotate(45deg);
          box-shadow: 0 0 0 0;
        }
        &:after {
          transform: rotate(-45deg);
        }
      }
      &:before,
      &:after {
        content: "";
        position: absolute;
        width: 30px;
        height: 3px;
        background: #fff;
        top: 10px;
        left: calc(50% - 15px);
        border-radius: 5px;
        box-shadow: 0 10px 0 0 #fff;
        transition: transform 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275),
          box-shadow 100ms ease-in-out;
        transition-delay: 0.1s, 0s;
        transform-origin: 0% 50%;
      }
      &:after {
        box-shadow: none;
        top: 30px;
        transform-origin: 0% 50%;
      }
      &:hover {
        ol {
          transform: translateY(0) translateZ(-1px);
          ol {
            transform: none;
          }
        }
      }
      ol {
        position: absolute;
        width: 100%;
        top: 0px;
        display: table;
        left: 0;
        margin: 0px;
        transform: translateY(calc(-100% - 45px)) translateZ(-1px);
        text-align: center;
        transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
        background: #000;
        padding: 60px 0 20px;
        height: auto;
        li {
          position: relative;
          display: inline-block;
          width: 100%;
          clear: both;
          height: 50px;
          padding: 10px 0;
          margin: 10px 0;
          transition: all 300ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
          background: #000;
          &:nth-of-type(even) {
            transform: rotate(-5deg);
          }
          &:nth-of-type(odd) {
            transform: rotate(5deg);
          }
          &:hover {
            ol {
              height: auto;
              transition: opacity 0.2s ease-in-out;
              opacity: 1;
            }
          }
          a {
            color: #fff;
            text-decoration: none;
          }
        }
        ol {
          position: relative;
          transform: none;
          background: transparent;
          display: inline-block;
          width: 100%;
          height: auto;
          top: auto;
          padding: 0;
          height: 0;
          overflow: hidden;
          opacity: 0;
          transition: opacity 0.2s ease-in-out;
          li {
            font-size: 12px;
            height: auto;
            &:first-of-type {
              padding-top: 20px;
            }
          }
        }
      }
    }
  }
}