vue-material/src/components/mdInputContainer/mdInputContainer.scss

@import '../../core/variables.scss';

$input-size: 32px;

.md-input-container {
  min-height: 48px;
  margin: 4px 0 20px;
  padding-top: 16px;
  position: relative;

  &:after {
    height: 1px;
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(#000, .12);
    transition: $swift-ease-out;
    content: " ";
  }

  label {
    position: absolute;
    top: 23px;
    left: 0;
    pointer-events: none;
    transition: $swift-ease-out;
    transition-duration: .3s;
    color: rgba(#000, .54);
    font-size: 16px;
    line-height: 20px;
  }

  input,
  textarea {
    width: 100%;
    height: $input-size;
    padding: 0;
    display: block;
    border: none;
    background: none;
    transition: $swift-ease-out;
    transition-property: font-size;
    color: rgba(#000, .54);
    font-size: 1px;
    line-height: $input-size;

    &:focus {
      outline: none;
    }
  }

  textarea {
    min-height: 32px;
    max-height: 230px;
    padding: 5px 0;
    line-height: 1.3em;
    resize: none;
  }

  .md-error {
    height: 20px;
    padding-top: 4px;
    display: block !important;
    position: absolute;
    opacity: 0;
    transform: translate3d(0, -8px, 0);
    transition: $swift-ease-in;
    font-size: 12px;
  }

  .md-count {
    height: 20px;
    padding-top: 4px;
    position: absolute;
    right: 0;
    font-size: 12px;
  }
}

.md-input-focused,
.md-has-value {
  label {
    pointer-events: auto;
    top: 0;
    font-size: 12px;
  }

  input,
  textarea {
    font-size: 16px;
  }
}

.md-has-value {
  input,
  textarea {
    color: rgba(#000, .87);
  }
}

.md-input-inline {
  label {
    pointer-events: none;
  }

  &.md-input-focused {
    label {
      top: 23px;
      font-size: 16px;
    }
  }

  &.md-has-value {
    label {
      opacity: 0;
    }
  }
}

.md-input-disabled {
  &:after {
    background: bottom left repeat-x;
    background-image: linear-gradient(to right, rgba(#000, .38) 0%, rgba(#000, .38) 33%, transparent 0%);
    background-size: 4px 1px;
  }

  label,
  input,
  textarea {
    color: rgba(#000, .38);
  }
}

.md-has-password {
  &.md-input-focused .md-toggle-password {
    color: rgba(#000, .54);
  }

  .md-toggle-password {
    margin: 0;
    position: absolute;
    right: 0;
    bottom: -2px;
    color: rgba(#000, .38);
  }
}

.md-input-invalid {
  .md-error {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.md-input-required {
  label:after {
    position: absolute;
    top: 2px;
    right: 0;
    transform: translateX(calc(100% + 2px));
    content: "*";
    font-size: 12px;
    line-height: 1em;
    vertical-align: top;
  }
}