keeweb/app/styles/base/_forms.scss

:focus {
    outline: none;
}

fieldset {
    background-color: var(--secondary-background-color);
    border: base-border();
    margin: 0 0 $small-spacing;
    padding: $base-spacing;
}

input {
    line-height: normal;
    color: inherit;
}

input,
select {
    display: block;
    font-family: $base-font-family;
    font-size: 1rem;
    -webkit-app-region: no-drag;
}

label {
    display: inline-block;
    font-family: $base-font-family;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: $small-spacing / 2;

    &.required::after {
        content: '*';
    }

    abbr {
        display: none;
    }
}

input[type='text'],
input[type='password'],
textarea,
input:not([type]) {
    box-sizing: border-box;
    font-family: $base-font-family;
    font-size: 1rem;
    margin-bottom: $small-spacing;
    padding: $base-spacing / 3;
    transition: border-color $base-duration $base-timing;

    &::-ms-clear {
        display: none;
    }

    &::-webkit-credentials-auto-fill-button {
        visibility: hidden;
        display: none !important;
        pointer-events: none;
        position: absolute;
        right: 0;
    }

    color: var(--text-color);
    background-color: var(--background-color);
    border: base-border();
    box-shadow: form-box-shadow();
    border-radius: var(--input-border-radius);

    &:hover {
        border-color: var(--accent-border-color);
    }

    &:focus {
        border-color: var(--form-box-border-color-focus);
        box-shadow: form-box-shadow-focus();
        outline: none;
    }

    &:disabled {
        background-color: var(--disabled-background-color);
        cursor: not-allowed;

        &:hover {
            border: base-border();
        }
    }

    &.input--error,
    &.input--error:hover,
    &.input--error:focus,
    &:invalid {
        border-color: var(--error-color);
        box-shadow: form-box-shadow-focus-error();
        &::selection {
            background-color: var(--text-selection-bg-color-error);
        }
    }

    &.input-search {
        padding-left: 2.9em;
        padding-right: 1.8em;
    }

    &::placeholder {
        color: var(--muted-color);
    }
}

textarea {
    resize: vertical;
}

input[type='search'] {
    appearance: none;
}

input[type='checkbox'],
input[type='radio'] {
    display: inline;
    margin-right: $small-spacing / 2;

    + label {
        display: inline-block;
    }
}

input[type='file'] {
    margin-bottom: $small-spacing;
    width: 100%;
}

select {
    margin-bottom: $small-spacing;
    max-width: 100%;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    transition: border-color $base-duration $base-timing;
    border-radius: var(--input-border-radius);
    padding-left: $base-spacing / 3;

    background-image: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iaXNvLTg4NTktMSI/Pg0KPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiDQogICAgd2lkdGg9IjMwNnB4IiBoZWlnaHQ9IjMwNnB4IiB2aWV3Qm94PSIwIDAgMzA2IDMwNiIgeG1sOnNwYWNlPSJwcmVzZXJ2ZSI+DQogICAgPHBvbHlnb24gcG9pbnRzPSIyNzAuMyw1OC42NSAxNTMsMTc1Ljk1IDM1LjcsNTguNjUgMCw5NC4zNSAxNTMsMjQ3LjM1IDMwNiw5NC4zNSIgZmlsbD0iIzk5ODQ4MyIvPg0KPC9zdmc+DQo=);
    background-position: calc(100% - 5px) center;
    background-size: 10px;
    background-repeat: no-repeat;

    background-color: var(--background-color);
    border: base-border();
    color: var(--text-color);
    box-shadow: form-box-shadow();
    &:hover {
        border-color: var(--accent-border-color);
    }
    &:focus {
        border-color: var(--form-box-border-color-focus);
        box-shadow: form-box-shadow-focus();
        outline: none;
    }
    &:disabled {
        background-color: var(--disabled-background-color);
        cursor: not-allowed;
        &:hover {
            border: base-border();
        }
    }
    &::-ms-expand {
        display: none;
    }
}

option {
    background-color: var(--background-color);
    color: var(--text-color);
}

input[type='checkbox'] {
    display: none;

    &:not([disabled]) + label:hover:before {
        color: var(--action-color);
    }
    & + label:before {
        @include fa-icon;
        content: $fa-var-square-o;
        display: inline-block;
        width: 1.3em;
        color: var(--text-color);
        font-size: 1.2em;
        vertical-align: bottom;
        position: relative;
        top: 0.08em;
    }
    &:checked + label:before {
        content: $fa-var-check-square-o;
    }
}

$thumb-size: 14px;

input[type='range'] {
    -webkit-appearance: none;
    width: 100%;
    margin: 12px 0;
    padding: 0;
    background: transparent;
    &:focus {
        outline: none;
    }
    &::-webkit-slider-runnable-track {
        background: var(--text-color);
        width: 100%;
        height: 1px;
        cursor: pointer;
        border-radius: 1px;
        border: none;
    }
    &::-webkit-slider-thumb {
        background: var(--text-color);
        border: none;
        height: $thumb-size;
        width: $thumb-size;
        border-radius: $thumb-size;
        cursor: pointer;
        -webkit-appearance: none;
        margin-top: -6.5px;
    }
    &::-moz-range-track {
        background: var(--text-color);
        width: 100%;
        height: 1px;
        cursor: pointer;
        border-radius: 1px;
        border: none;
    }
    &::-moz-range-thumb {
        background: var(--text-color);
        border: none;
        height: $thumb-size;
        width: $thumb-size;
        border-radius: $thumb-size;
        cursor: pointer;
    }
    &::-moz-focus-outer {
        border: 0;
    }
    &::-ms-track {
        width: 100%;
        height: 1px;
        cursor: pointer;
        background: transparent;
        border-color: transparent;
        border-width: $thumb-size 0;
        color: transparent;
    }
    &::-ms-tooltip {
        display: none;
    }
    &::-ms-fill-lower,
    &::-ms-fill-upper,
    &:focus::-ms-fill-lower,
    &:focus::-ms-fill-upper {
        background: lightgray; // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12132854/
        //background: var(--text-color);
    }
    &::-ms-thumb {
        border: none;
        height: $thumb-size;
        width: $thumb-size;
        border-radius: $thumb-size;
        cursor: pointer;
        background: lightgray; // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12132854/
        //background: var(--text-color);
    }
}

.input-size-base {
    width: 60%;
    @include tablet {
        width: calc(100% - 20px);
    }
}

.input-base {
    @extend .input-size-base;
}

select.input-base {
    height: 2em;
}