.page
  .page__top
    .menu#menu
      input.menu__trigger.menu__trigger_show#show-menu(type="radio", name="menu-trigger")
      input.menu__trigger.menu__trigger_hide#hide-menu(type="radio", name="menu-trigger")
      .menu__overlay
      label.menu__btn(for="show-menu")
        .menu__btn-icon
      .menu__list
        label.menu__list-item(for="hide-menu")
          span.menu__list-text Home
        label.menu__list-item(for="hide-menu")
          span.menu__list-text About
        label.menu__list-item(for="hide-menu")
          span.menu__list-text Services
        label.menu__list-item(for="hide-menu")
          span.menu__list-text Contact
  .page__content
    .card
      .card__avatar
      .card__name
      .card__title
      .card__description
    

@use postcss-nested;

*, *:before, *:after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

body {
  background: #f2e274;
  font: 14px/1.2 'Open Sans',helvetica, sans-serif;
}

.page {
  height: 440px;
  width: 260px;
  background: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 1px 3px 6px rgba(0, 0, 0, .3);
  
  &__top {
    height: 56px;
    margin-bottom: 20px;
  }
}

.menu {
  &__trigger {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    width: 0;
    height: 0;
    
    &_show { 
      &:checked {
        & ~ .menu__btn {
          transition: transform .4s ease-in-out,
                      opacity .1s ease-in-out .5s;
          transform: scaleX(25);
          opacity: 0;
          .menu__btn-icon {
            transition: background .3s ease-in-out;
            background: #cbd9ec;
          }
        }
        & ~ .menu__list {
          transition: opacity .1s ease-in-out .4s,
                      box-shadow .4s ease-in-out .5s,
                      border .4s ease-in-out .5s;
          opacity: 1;
          transform: translate(0, 0);
          border-bottom-color: #cbd9ec;
          box-shadow: 0 2px 6px rgba(0, 0, 0, .15);
          .menu__list-item {
            transition: height .5s ease-in-out .5s;
            height: 60px;
            &:nth-child(1) {
              .menu__list-text {
                transition: transform .15s ease-in-out .8s,
                            opacity .15s ease-in-out .8s;
              }
            }
            &:nth-child(2) {
              .menu__list-text {
                transition: transform .15s ease-in-out .9s,
                            opacity .15s ease-in-out .9s;
              }
            }
            &:nth-child(3) {
              .menu__list-text {
                transition: transform .15s ease-in-out 1s,
                            opacity .15s ease-in-out 1s;
              }
            }
            &:nth-child(4) {
              .menu__list-text {
                transition: transform .15s ease-in-out 1.1s,
                            opacity .15s ease-in-out 1.1s;
              }
            }
          }
          .menu__list-text {
            transform: translate(20px, -50%);
            opacity: 1;
          }
        }
        & ~ .menu__overlay {
          transition: transform .1s ease-in-out .7s,
                      opacity .25s ease-in-out .8s;
          opacity: 1;
          transform: translate(0, 0);
        }
      }
    }
  }
  &__btn {
    transition: opacity .1s ease-in-out .4s,
                transform .4s ease-in-out .5s;
    width: 20px;
    height: 16px;
    position: absolute;
    top: 20px;
    left: 20px;
    cursor: pointer;
    z-index: 10;
    
    &-icon {
      transition: background .4s ease-in-out .6s;
      position: absolute;
      width: 100%;
      height: 2px;
      top: 50%;
      margin-top: -1px;
      background: #8a9db1;
      z-index: 10;
      &:before,
      &:after {
        content: '';
        width: 100%;
        height: 100%;
        background: inherit;
        position: absolute;
        left: 0;
      }
      &:before {
        top: -7px;
      }
      &:after {
        bottom: -7px;
      }
    }
  }
  &__list {
    transition: border .4s ease-in-out,
                box-shadow .4s ease-in-out,
                opacity .1s ease-in-out .5s,
                transform .1s ease-in-out .8s;
    position: absolute;
    opacity: 0;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 20;
    padding: 0;
    transform: translate(0, -100%);
    background: #fff;
    border-bottom: 2px solid rgba(0, 0, 0, 0);
    box-shadow: none;
    &-item {
      transition: height .5s ease-in-out;
      border-bottom: 2px solid #cbd9ec;
      height: 7px;
      display: block;
      cursor: pointer;
      position: relative;
      &:active {
        background: #364656;
        color: #fff;
      }
      &:first-child {
        height: 22px;
      }
      &:last-child {
        border-bottom: none;
      }
      &:nth-child(4) {
        .menu__list-text {
          transition: transform .1s ease-in-out,
                      opacity .1s ease-in-out;
        }
      }
      &:nth-child(3) {
        .menu__list-text {
          transition: transform .1s ease-in-out .1s,
                      opacity .1s ease-in-out .1s;
        }
      }
      &:nth-child(2) {
        .menu__list-text {
          transition: transform .1s ease-in-out .2s,
                      opacity .1s ease-in-out .2s;
        }
      }
      &:nth-child(1) {
        .menu__list-text {
          transition: transform .1s ease-in-out .3s,
                      opacity .1s ease-in-out .3s;
        }
      }
    }
    &-text {
      position: absolute;
      top: 50%;
      left: 0;
      transform: translate(-20px, -50%);
      opacity: 0;
    }
  }
  &__overlay {
    transition: opacity .25s ease-in-out,
                transform .1s ease-in-out .25s;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    background: rgba(138, 157, 177, .3);
    opacity: 0;
    transform: translate(0, -100%)
  }
}

.card {
  text-align: center;
  display: flex;
  align-items: center;
  flex-direction: column;
  padding: 20px;
  &__avatar {
    background: #e4f3fa;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    margin-bottom: 10px;
  }
  &__name {
    width: 120px;
    height: 14px;
    background: #e4f3fa;
    margin-bottom: 10px;
    border-radius: 3px;
  }
  &__title {
    width: 160px;
    height: 14px;
    background: #e4f3fa;
    margin-bottom: 20px;
    border-radius: 3px;
  }
  &__description {
    background: #e4f3fa;
    height: 136px;
    width: 100%;
    border-radius: 3px;
  }
}

/**
Pure css implementation of the concept:
https://dribbble.com/shots/2286361-Hamburger-Menu-Animation
**/