.alert-icon-center-vertically(@font-size) {
  @half-height: @font-size / 2;
  // IE8 doesn't support calc(): it's OK, the icon will just be aligned to the top
  top: calc(~'50% - @{half-height}');
  // phantomjs only supports -webkit-calc()
  top: -webkit-calc(~'50% - @{half-height}');
}

.alert {
  padding: 20px 20px 20px 60px;
  margin-bottom: 20px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  position: relative;
  &:before {
    font-family: "matomo";
    content: "\e625";
    position: absolute;
    left: 20px;
    line-height: 100%; // line-height = font-size
    font-size: 24px;
  }

  a {
    color: inherit;
    text-decoration: underline;
  }
}

body #content .alert-success p {
  color: @color-green-piwik;
}

.alert-success {
  color: @color-green-piwik;
  border-color: @color-green-piwik;
  &:before {
    content: "\e63d";
    color: @color-green-piwik;
  }
  p {
    color: @color-green-piwik;
  }
  a {
    color: @color-green-piwik;
    text-decoration: underline;
    &:hover {
      text-decoration: underline;
    }
  }
}

body #content .alert-info p {
  color: #838383;
}

.alert-info {
  color: #838383;
  background-color: #F5F5F5;
  font-size: 14px;
  padding-top: 15px;
  padding-bottom: 15px;
  p {
    color: #838383;
  }
  &:before {
    color: #afafaf;
    font-size: 20px;
  }
  a {
    color: #838383;
    text-decoration: underline;
    &:hover {
      text-decoration: underline;
    }
  }
}

body #content .alert-warning p {
  color: #fbf7f1;
}

.alert-warning {
  color: #f57c00;
  border-color: #f57c00;
  &:before {
    content: "\e621";
    color: #f57c00;
  }
  p {
    color: #f57c00;
  }
  a {
    color: #f57c00;
    text-decoration: underline;
    &:hover {
      text-decoration: underline;
    }
  }
}

body #content .alert-danger p {
  color: @color-red-piwik;
}

.alert-danger {
  color: @color-red-piwik;
  border-color: @color-red-piwik;
  &:before {
    content: "\e616";
    color: @color-red-piwik;
  }
  p {
    color: @color-red-piwik;
  }
  a {
    color: @color-red-piwik;
    text-decoration: underline;
    &:hover {
      text-decoration: underline;
    }
  }
}