// 变量
$color-primary: #409eff;

// 页签
.router-tab {
	$bgHover: #f5f5f5;
	$bgActive: #e5e5e5;
  $h: 32px;
  $slideW: 15px;

  display: flex;
  flex-direction: column;

  &-header {
    position: relative;
		z-index: 9;
    border-bottom: 2px solid $color-primary;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, .12), 0 0 3px 0 rgba(0, 0, 0, .04);
    transition: all .2s ease-in-out;
    flex: none;

    &.is-scroll {
      padding: 0 $slideW;

      .nav-prev,
      .nav-next {
        display: block;
      }

      .router-tab-scroll {
        overflow: hidden;
      }
    }
  }

  &-scroll {
    overflow: visible;
  }

  &-nav {
    position: relative;
    margin: 0;
    padding: 0;
    display: inline-block;
    white-space: nowrap;
  }

  // 页签项
  &-item {
    $color: #4d4d4d;
    $borderColor: #e6e6e6;

    position: relative;
    display: inline-block;
    margin-right: -1px;
    padding: 0 20px 0 10px;
    color: $color;
    line-height: $h;
    font-size: 13px;
    border: 1px solid $borderColor;
    border-bottom: none;
    cursor: pointer;
    transition: all .3s ease-in-out;
    user-select: none;

    &.actived {
      background-color: $color-primary;
      border-color: $color-primary;
      color: #fff;

      .tab-close {
        background-image: url(../icon/close-active.png);
      }
		}

		&:not(.actived) {
			&:hover,
			&.contextmenu {
				color: #000;
				background-color: $bgHover;
        box-shadow: 0 -2px 4px rgba(0,0,0,.08);
			}

			&:active {
				background-color: $bgActive;
			}
    }
    
    .tab-title {
      display: inline-block;
      max-width: 100px;
      min-width: 30px;
      vertical-align: top;
      white-space: nowrap;
      text-overflow: ellipsis;
      overflow: hidden;
    }

    .tab-icon {
      margin-right: 5px;
      vertical-align: top;
      font-size: 16px;
      line-height: $h;
    }

    .tab-close {
      $size: 16px;
      $font-size: 12px;

      position: absolute;
      top: 1px;
      right: 1px;
      width: $size;
      height: $size;
      text-align: center;
      font-size: $font-size;
      border-radius: 50%;
      background: {
        image: url(../icon/close.png);
        position: 50% 50%;
        repeat: no-repeat;
      }
      transition: background-color .2s ease-in-out;

      &::before {
        line-height: $size;
      }

      &:hover {
        background-color: rgba(0,0,0,.1);
      }

      &:active {
        background-color: rgba(0,0,0,.2);
      }
    }
  }

  .nav-prev,
  .nav-next {
    display: none;
    position: absolute;
    top: 0;
    width: $slideW;
    height: 100%;
    line-height: $h;
    text-align: center;
    color: #ccc;
    background: {
      image: url(../icon/left.png);
      position: 40% 50%;
      repeat: no-repeat;
    }
    transition: all .2s ease-in-out;
    box-shadow: 0 0 4px rgba(0,0,0,.2);
    cursor: pointer;

    &:hover {
      color: #fff;
      background-image: url(../icon/left-hover.png);
      background-color: $color-primary;
      border-color: $color-primary;
    }

    &:active {
      opacity: .8;
    }
  }

  .nav-prev {
    left: 0;
  }

  .nav-next {
    right: 0;
    transform: rotate(180deg);
	}

  // 页面容器
  &-container {
    position: relative;
    flex: auto;
    overflow: hidden auto;
    background: #fff;
		transition: all .4s ease-in-out;
  }
	
	// 右键菜单
	&-contextmenu {
    position: fixed;
    z-index: 999;
		min-width: 120px;
    border-top: 2px solid $color-primary;
    font-size: 13px;
		background: #fff;
    box-shadow: 0 1px 6px 3px rgba(0,0,0,.2);
    transition: all .2s ease-in-out;

		.contextmenu-item {
			display: block;
			padding: 5px 20px;
			line-height: 1.5;
			color: #555;
			cursor: pointer;
			transition: all .2s ease-in-out;
      user-select: none;

			&:hover {
				color: #333;
				background: $bgHover;
			}

			&:active {
				background: $bgActive;
			}

      &[disabled] {
        color: #aaa;
        background: none;
        pointer-events: none;
        cursor: default;
      }
		}
	}
}

.is-tab-fullscreen .router-tab-container {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 990;
}