hexo-theme-keep/source/css/layout/_partial/header.styl

$header-progress-height = 2.8px;
$logo-title-font-size = 2.2rem;

.header-wrapper {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--background-color);
  padding-top: $header-progress-height;

  hover-style(1.02, 1.02);

  .header-content {
    position: relative;
    height: 100%;
    width: $main-content-width;
    max-width: $content-max-width;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    z-index: $z-index-5;

    +keep-tablet() {
      width: $main-content-width-tablet;
    }


    +keep-mobile() {
      width: $main-content-width-mobile;
    }

    .left {

      .logo-title {
        font-size: $logo-title-font-size;
        font-weight: bold;
        letter-spacing: 1px;
        color: var(--first-text-color);

        +keep-tablet() {
          font-size: $logo-title-font-size * 0.9;
        }

        +keep-mobile() {
          font-size: $logo-title-font-size * 0.8;
        }
      }


    }

    .right {

      .pc {
        .menu-list {
          display: flex;
          align-items: center;

          +keep-tablet() {
            display: none;
          }


          .menu-item {
            float: left;
            position: relative;
            margin-left: 30px;
            font-size: 1rem;
            cursor: pointer;

            &:first-child {
              margin-left: 0;
            }

            a {

              &:hover {

                color: var(--default-text-color);

                &::after {
                  content: '';
                  position: absolute;
                  bottom: -10px;
                  left: 50%;
                  width: 100%;
                  height: 2px;
                  transform: translateX(-50%);
                  background: var(--primary-color);
                }
              }

            }


            .active {
              color: var(--second-text-color);

              &::after {
                content: '';
                position: absolute;
                bottom: -10px;
                left: 50%;
                width: 100%;
                height: 2px;
                transform: translateX(-50%);
                background: var(--primary-color)
              }
            }


            &.search {
              font-size: 1.5rem;
              margin-left: 26px;

              &:hover {
                color: var(--primary-color);
              }
            }
          }


        }

      }

      .mobile {
        display: flex;
        justify-content: space-between;
        align-items: center;

        .icon-item {
          display: none;
          position: relative;
          cursor: pointer;
          font-size: 18px;
          margin-left: 12px;
          width: 20px;
          height: 20px;

          &:first-child {
            margin-left: 0;
          }

          +keep-tablet() {
            display: flex;
            justify-content: center;
            align-items: center;
          }
        }

        .search {

          &:hover {
            color: var(--primary-color);
          }

        }


        .menu-bar {

          .menu-bar-middle {
            width: 18px;
            height: 2.6px;
            //margin: 6px 0;
            position: relative;
            background: var(--default-text-color);
            transition();

            &::before {
              content: '';
              position: absolute;
              top: -6px;
              left: 0;
              width: 100%;
              height: 2.6px;
              background: var(--default-text-color);
              transition();
            }

            &::after {
              content: '';
              position: absolute;
              bottom: -6px;
              left: 0;
              width: 100%;
              height: 2.6px;
              background: var(--default-text-color);
              transition();
            }
          }
        }
      }
    }
  }


  .header-drawer {
    width: 100%;
    padding: $header-height 0 20px 0;
    position: absolute;
    top: 0;
    left: 0;
    transform: scaleY(0);
    transform-origin: top;
    background: var(--background-color);
    z-index: $z-index-2;

    transition();

    .drawer-menu-list {
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      align-items: center;

      .drawer-menu-item {
        font-size: 1rem;
        margin: 6px 0;
        height: 38px;

        a {
          padding: 6px 20px;
          border-radius: 20px;
          color: var(--default-text-color);
          transition();

          &:hover {
            color: var(--second-text-color);
            border: 1px solid var(--default-text-color);
          }


          &.active {
            border: 1px solid var(--default-text-color);
            color: var(--second-text-color);
          }
        }


      }
    }
  }


  .window-mask {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    z-index: $z-index-1;
    visibility: hidden;
    opacity: 0;
    transition();
  }

}


.header-drawer-show {
  opacity: 1 !important;

  .header-content {

    .right {
      .mobile {
        .menu-bar {
          .menu-bar-middle {

            background: transparent;

            &::before {
              transform: translateY(6px) rotate(45deg);
            }


            &::after {
              transform: translateY(-6px) rotate(-45deg);
            }
          }
        }
      }

    }
  }

  .header-drawer {
    transform: scaleY(1);
  }

  .window-mask {
    visibility: visible;
    opacity: 1;
  }

}


.header-wrapper-shrink {

  .header-content {

    .logo-title {
      transform: scale(0.8);
      transform-origin: left top;
    }

    .menu-list {
      .menu-item {
        a:hover {
          &::after {
            bottom: -($header-shrink-height / 2 - 12);
          }
        }

        .active::after {
          bottom: -($header-shrink-height / 2 - 12);
        }
      }

    }
  }


  .header-drawer {
    padding: $header-shrink-height 0 20px 0;
  }
}