/* Style for the calculator component */
@import 'inc/bootstrap';

/* font size mixin specific to calculator to use em instead of rem unit */
@function calc-em-size($em) {
    @return ($em) * 1em;
}
@mixin calc-font-size($em) {
    font-size: calc-em-size($em) !important;
}

.calculator {
    $calculatorPanelBg: $uiClickableDefaultBg;
    $calculatorPanelTxt: $textColor;
    $calculatorKeyboardBg: $uiClickableDefaultBg;
    $calculatorKeyboardHoverBg: $uiClickableActiveBg;
    $calculatorKeyboardSpecialBg: $uiClickableHoverBg;
    $calculatorKeyboardSpecialTxt: $textHighlight;
    $calculatorKeyboardCommandTxt: $info;
    $calculatorKeyboardSwitchBg: $uiClickableDefaultBg;
    $calculatorKeyboardSwitchTxt: $textColor;
    $calculatorKeyboardSwitchSelectedBg: $uiClickableHoverBg;
    $calculatorKeyboardSwitchSelectedTxt: $textHighlight;
    $calculatorKeyboardSwitchBorder: whiten($textColor, 0.5);
    $calculatorKeyboardTxt: $textColor;
    $calculatorScreenBg: $uiGeneralContentBg;
    $calculatorScreenTxt: $textColor;
    $calculatorScreenBorder: $info;
    $calculatorScreenSpecialTxt: $uiClickableHoverBg;
    $calculatorScreenSpecialBg: whiten($uiClickableHoverBg, 0.9);
    $calculatorHistoryBorder: $uiGeneralContentBorder;
    $calculatorHistoryTxt: whiten($textColor, 0.2);

    $calculatorFontSizeBtnPrimary: 1.7;
    $calculatorFontSizeBtnSecondary: 1.3;
    $calculatorFontSizeBtnSwitch: 1;
    $calculatorFontSizeBtnSvg: 1;
    $calculatorFontSizeExpression: 1.3;
    $calculatorFontSizeHistory: 1;
    $calculatorLineHeightExpression: calc-em-size($calculatorFontSizeExpression + 0.3);
    $calculatorLineHeightHistory: calc-em-size($calculatorFontSizeHistory + 0.3);
    $calculatorTermSpace: calc-em-size(0.2);
    $calculatorButtonSize: calc-em-size(3.2);
    $calculatorSwitchSize: calc-em-size(3.2);
    $calculatorButtonPadding: 2px;
    $calculatorSwitchPadding: 4px;
    $calculatorScreenPadding: 8px;
    $calculatorBaseFontSize: 12px;

    position: relative;
    font-family: monospace, sans-serif;
    font-size: $calculatorBaseFontSize;
    width: 100%;
    height: 100%;
    @include vendor-prefix(display, flex, value, (-ms-, -webkit-, ''));
    @include vendor-prefix(flex-direction, column, property, (-ms-, -webkit-, ''));
    @include vendor-prefix(align-content, stretch, property, (-ms-, -webkit-, ''));

    sup,
    sub {
        font-size: 0.75em;
    }
    sup {
        top: -0.5em;
    }
    sub {
        bottom: -0.5em;
    }

    [data-type='exponent'] {
        vertical-align: super;
        font-size: 0.75em;
    }

    [data-type='variable'] {
        font-weight: bold;
    }

    [data-type='function']:not([data-value*='rt']) {
        padding-right: 0.3em;
    }

    .screen,
    .input {
        position: relative;
        @include vendor-prefix(flex, 0 0 auto, property, (-ms-, -webkit-, ''));
    }

    .focus {
        outline: 2px solid $calculatorScreenBorder;
    }

    .keyboard {
        padding: 0 20px 20px;
        position: relative;
        @include vendor-prefix(display, flex, value, (-ms-, -webkit-, ''));
        @include vendor-prefix(flex, 1 1, property, (-ms-, -webkit-, ''));
    }

    .calculator-keyboard {
        position: relative;
        @include vendor-prefix(display, flex, value, (-ms-, -webkit-, ''));
        @include vendor-prefix(flex-direction, column, property, (-ms-, -webkit-, ''));
        @include vendor-prefix(align-content, stretch, property, (-ms-, -webkit-, ''));
        background: $calculatorKeyboardBg;
        color: $calculatorKeyboardTxt;
        width: 100%;
        height: auto;
        padding-top: $calculatorScreenPadding;

        .row {
            position: relative;
            @include vendor-prefix(display, flex, value, (-ms-, -webkit-, ''));
            @include vendor-prefix(flex-direction, row, property, (-ms-, -webkit-, ''));
            @include vendor-prefix(align-content, stretch, property, (-ms-, -webkit-, ''));
            @include vendor-prefix(flex, 1 1 auto, property, (-ms-, -webkit-, ''));
            width: 100%;
            height: 100%;
        }

        .spacer {
            @include vendor-prefix(flex, 1 1 auto, property, (-ms-, -webkit-, ''));
            width: $calculatorButtonSize;
            height: 100%;
        }

        span {
            position: relative;
            display: inline-block;
            z-index: 1;
            @include calc-font-size($calculatorFontSizeBtnSecondary);
        }

        button {
            position: relative;
            background-color: $calculatorKeyboardBg;
            color: $calculatorKeyboardTxt !important;
            display: inline-block;
            border-radius: 0;
            border: none;
            padding: 0;
            text-align: center;
            text-shadow: none;
            cursor: pointer;
            @include vendor-prefix(flex, 1 1 auto, property, (-ms-, -webkit-, ''));
            width: $calculatorButtonSize;
            height: 100%;

            @include calc-font-size(1);

            &:not(.switch) {
                &:before {
                    content: ' ';
                    border-radius: 50%;
                    display: inline-block;
                    position: absolute;
                    z-index: 0;
                    top: calc(50% - #{calc($calculatorButtonSize / 2)} + #{$calculatorButtonPadding});
                    left: calc(50% - #{calc($calculatorButtonSize / 2)} + #{$calculatorButtonPadding});
                    width: calc(#{$calculatorButtonSize} - #{$calculatorButtonPadding * 2});
                    height: calc(#{$calculatorButtonSize} - #{$calculatorButtonPadding * 2});
                }
            }
            &:hover {
                &:before {
                    background: $calculatorKeyboardHoverBg;
                }
            }

            &.disabled {
                visibility: hidden;
            }
            &.switch {
                span {
                    color: $calculatorKeyboardSwitchTxt !important;
                    border-color: $calculatorKeyboardSwitchBorder !important;
                    border-top: 1px solid;
                    border-bottom: 1px solid;
                    height: auto;
                    width: 100%;
                    padding: $calculatorSwitchPadding 0.5em;
                    @include calc-font-size($calculatorFontSizeBtnSwitch);
                }

                &.first {
                    span {
                        border-left: 1px solid;
                        border-top-left-radius: 2px;
                        border-bottom-left-radius: 2px;
                    }
                }
                &.last {
                    span {
                        border-right: 1px solid;
                        border-top-right-radius: 2px;
                        border-bottom-right-radius: 2px;
                    }
                }

                &:before {
                    content: ' ';
                    border-radius: 2px;
                    display: inline-block;
                    position: absolute;
                    z-index: 0;
                    top: calc(50% - #{calc($calculatorFontSizeBtnSwitch / 2)}em - #{$calculatorSwitchPadding});
                    bottom: calc(50% - #{calc($calculatorFontSizeBtnSwitch / 2)}em - #{$calculatorSwitchPadding});
                    left: 3px;
                    right: 3px;
                }
            }
            &.operand {
                span {
                    font-weight: bold;
                    @include calc-font-size($calculatorFontSizeBtnPrimary);
                }
            }
            &.command {
                span {
                    color: $calculatorKeyboardCommandTxt !important;
                }
            }
            &.execute {
                &:before {
                    background: $calculatorKeyboardSpecialBg;
                }

                span {
                    font-weight: bold;
                    color: $calculatorKeyboardSpecialTxt !important;
                    @include calc-font-size($calculatorFontSizeBtnPrimary);
                }
            }

            svg {
                display: inline-block;
                width: calc-em-size($calculatorFontSizeBtnSvg);
                height: calc-em-size($calculatorFontSizeBtnSvg);
                stroke-width: 0;
                stroke: currentColor;
                fill: currentColor;

                &.backspace-outline {
                    width: calc-em-size($calculatorFontSizeBtnSvg * 1.2);
                    height: calc-em-size($calculatorFontSizeBtnSvg * 1.2);
                }
            }
        }
    }

    &.degree {
        .calculator-keyboard {
            button.switch[data-command='degree'] {
                &:before {
                    background: $calculatorKeyboardSwitchSelectedBg;
                }
                span {
                    color: $calculatorKeyboardSwitchSelectedTxt !important;
                }
            }
        }
    }
    &.radian {
        .calculator-keyboard {
            button.switch[data-command='radian'] {
                &:before {
                    background: $calculatorKeyboardSwitchSelectedBg;
                }
                span {
                    color: $calculatorKeyboardSwitchSelectedTxt !important;
                }
            }
        }
    }

    .simple-screen {
        position: relative;
        width: 100%;
        @include calc-font-size($calculatorFontSizeExpression);
        color: $calculatorScreenTxt;
        font-family: monospace;

        .screen-panel {
            position: relative;
            width: 100%;
            overflow: auto;
            word-break: break-all;
            text-align: left;
            padding: $calculatorScreenPadding 8px;
        }

        .history {
            @include calc-font-size($calculatorFontSizeHistory);
            border: 1px solid $calculatorHistoryBorder;
            color: $calculatorHistoryTxt;
            height: calc(#{$calculatorScreenPadding * 2} + #{$calculatorLineHeightHistory * 3});
            line-height: $calculatorLineHeightHistory;

            .history-line {
                .history-expression {
                    &,
                    .term {
                        font-weight: lighter;
                    }
                    text-align: left;
                }
                .history-result {
                    &:before {
                        content: '=';
                        display: inline-block;
                        font-weight: lighter;
                        padding-right: $calculatorTermSpace;
                    }
                    text-align: right;
                    font-weight: bolder;
                }
            }
        }
        .expression {
            @include calc-font-size($calculatorFontSizeExpression);
            background: $calculatorScreenBg;
            color: $calculatorScreenTxt;
            height: calc(#{$calculatorScreenPadding * 2} + #{$calculatorLineHeightExpression * 2});
            line-height: $calculatorLineHeightExpression;
        }
        .term {
            padding: 0;

            &.term-operator:not([data-token='POW']):not([data-token='FAC']):not([data-token='NEG']) {
                padding: 0 $calculatorTermSpace;
            }
            &.term-operator[data-token='FAC'],
            &.term-operator[data-token='NEG'] {
                margin-left: calc(-1 * $calculatorTermSpace / 2);
                margin-right: calc(-1 * $calculatorTermSpace / 2);
            }
            &.term-operator[data-token='POS'] {
                display: none;
            }
            &.term-function:not([data-token='SQRT']):not([data-token='CBRT']) {
                padding-right: $calculatorTermSpace;
            }
            &.term-operand {
                font-weight: bold;
            }
            &.term-modificator {
                font-weight: lighter;
            }
            &.term-constant {
                font-style: italic;
                font-weight: bold;
            }
            &.term-variable {
                font-weight: bold;
                color: $calculatorScreenSpecialTxt;
            }
            &.term-variable[data-token='VAR_ANS'] {
                background: $calculatorScreenSpecialBg;
                padding: 0;
                margin: 0 #{$calculatorTermSpace * 2};
                position: relative;
                &::before,
                &::after {
                    background: $calculatorScreenSpecialBg;
                    content: '';
                    border-radius: 50%;
                    border: 2px none;
                    position: absolute;
                    z-index: 0;
                    top: 0;
                    bottom: 0;
                    width: #{$calculatorTermSpace * 2};
                }
                &::before {
                    border-left-style: solid;
                    border-left-color: $calculatorScreenSpecialTxt;
                    left: #{-$calculatorTermSpace};
                }
                &::after {
                    border-right-style: solid;
                    border-right-color: $calculatorScreenSpecialTxt;
                    right: #{-$calculatorTermSpace};
                }
                * {
                    position: relative;
                    z-index: 1;
                }
            }
            &.term-unknown {
                color: $warning;
                text-decoration: underline wavy $error;
            }
            &.term-elide {
                display: none;
            }
            &.term-error {
                color: $error;
            }
            &.term-syntaxError {
                color: $error;
                text-decoration: underline wavy $error;
            }
        }
    }

    &.error .screen .expression {
        background: $errorBgColor;
    }
}