////
/// Defines themes that mimic the material design specification.
/// @author Carl Stephens
////

:root {
    // Set these to adjust the colour palette
    --primary-bg-color-l1: 36, 156, 207;
    --primary-bg-color: 33, 145, 192;
    --primary-fg-color: 255, 255, 255;

    --accent-bg-color: 25, 118, 158;
    --accent-fg-color: 255, 255, 255;

    // For components that are in a disabled state.
    --primary-disabled-color-raw: 130, 130, 130;
    // Main font color
    --body-color: rgb(39, 39, 39);
    // For the paper style, but more generally the neutral background color
    --paper-color: #FCFCFC;

    --body-font-family: Arial, sans-serif;
    
    --primary-box-shadow: 0 2px 4px 0 #505050;
    --primary-box-shadow-thin: 0 1px 3px 0 #666666;

    // The brightness to reduce participating elements to on hover
    --hover-brightness: 92%;
    --border-radius: 0.3em;
    --transition-duration: 0.15s;

    // Default theme
    @extend .theme-primary;
}

/* Scrollbar replacement */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1; 
}

::-webkit-scrollbar-thumb {
    background: #CCC;
    border-radius: 3px;

    transition-duration: var(--transition-duration);

    &:hover {
        background: #666;
        height: 8px;
        width: 8px;
    }
}

/* === Start component definitions === */

.paper {
    padding: 1.2em;
    border-radius: var(--border-radius);
    
    background-color: var(--paper-color);
    color: var(--body-color);
    box-shadow: var(--primary-box-shadow);
}

.card {
    @extend .paper;
    box-shadow: var(--primary-box-shadow-thin);
}

.card-outlined {
    @extend .card;

    box-shadow: none;
    border: 1px solid #BBB;
}

.divider {
    height: 1px;
    background-color: #0000001F;
    border: none;
    margin: 1rem 2rem;
}

.divider-s {
    @extend .divider;
    margin: 0 2rem;
}

/* Buttons */

.btn-primary {
    appearance: none;

    display: flex;
    align-items: center;
    justify-content: center;

    background-color: var(--bg-color);
    color: var(--fg-color);
    border: none;
    box-shadow: var(--primary-box-shadow-thin);
    border-radius: var(--border-radius);
    padding: 0.5em;

    cursor: pointer;
    font-size: 1rem;
    font-weight: 400;
    text-decoration: none;

    transition-duration: var(--transition-duration);

    &:hover {
        filter: brightness(var(--hover-brightness));
    }

    &:disabled {
        cursor: default;
        background-color: var(--disabled-color);
    }
}

.btn-fab {
    @extend .btn-primary;
    
    border-radius: 50%;
    padding: 0.3em;
}

/** Text display/input */

.text-container {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    align-items: flex-start;

    border-radius: var(--border-radius);
    background: #DDD;
    padding: 0.5em;
}

.text-container-sl {
    @extend .text-container;

    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
}

.text-input {
    @extend .text-container;

    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border: none;
    border-bottom: 2px solid #999;
    outline: none;
    cursor: text;

    font-family: var(--body-font-family);
    font-size: 1em;

    transition: border var(--transition-duration);

    &:hover {
        background-color: #CDCDCD;
    }

    &:active, &:focus, &:focus-visible {
        background-color: #CDCDCD;
        border-bottom: 2px solid var(--bg-color);
        
        .text-input-active {
            width: 100%;
        }
    }

    .text-input-active {
        background-color: var(--bg-color);
        height: 1px;
        margin: 0 auto;
        width: 0;
        transition-duration: var(--transition-duration);
    }
}

.text-input-sl {
    @extend .text-input;

    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
}

.text-placeholder {
    color: #666; 
    cursor: inherit;
    font-style: italic;
    cursor: inherit;
    user-select: none;
}

/* Switches */

// https://codepen.io/avstorm/pen/jOEpBLW
.switch
{
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;

    -webkit-tap-highlight-color: transparent;
    cursor: pointer;

    height: 16px;
    width: 38px;
    border-radius: 8px;
    display: inline-block;
    position: relative;
    margin: 6px;
    background-color: #c7c7c7;
    transition-duration: var(--transition-duration);

    &:focus {
        outline: 0;
    }

    &::after {
        content: '';
        position: absolute;
        display: inline-block;
        top: -4px;
        left: -4px;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: white;
        box-shadow: var(--primary-box-shadow-thin);
        transition-duration: var(--transition-duration);
    }

    &:checked {
        background-color: rgba(var(--bg-color-raw), 0.4);

        &::after {
            transform: translatex(22px);    
            background-color: var(--bg-color);
        }
    }
}

/* Sliders */

@mixin slider-clear {
    appearance: none;
    width: 100%; // Required for firefox

    &::-webkit-slider-thumb {
        -webkit-appearance: none;
    }

    &::-moz-range-track {
        outline: none;
    }

    &::-ms-track {
        width: 100%;
        background: transparent; 
        border-color: transparent;
        color: transparent;
    }
}

@mixin slider-thumb {
    height: 24px;
    width: 24px;
    border-radius: 50%;
    cursor: pointer;

    background-color: var(--bg-color);
    box-shadow: var(--primary-box-shadow-thin);

    &:hover {
        filter: brightness(var(--hover-brightness));
    }
}

@mixin disabled-slider-thumb {
    cursor: default;
    background-color: var(--disabled-color);
    
    &:hover {
        filter: none;
    }
}

.slider-continuous {
    @include slider-clear();

    margin: 0;
    padding: 0;
    height: 8px;
    border-radius: 4px;
    background-color: rgba(var(--bg-color-raw), 0.3);

    transition-duration: var(--transition-duration);

    &::-webkit-slider-thumb {
        @include slider-thumb()
    }

    &::-moz-range-thumb {
        @include slider-thumb()
    }

    &::-ms-thumb {
        @include slider-thumb()
    }

    &:hover {
        background-color: rgba(var(--bg-color-raw), 0.4);
    }
}

.slider-continuous:disabled {
    background-color: var(--disabled-color);
        
    &::-webkit-slider-thumb {
        @include disabled-slider-thumb();
    }

    &::-moz-range-thumb {
        @include disabled-slider-thumb();
    }

    &::-ms-thumb {
        @include disabled-slider-thumb();
    }

    &:hover {
        background-color: var(--disabled-color);
    }
}

/* List Views */

.list-view {
    list-style-type: none;
    margin-block: 0 0;
    padding-inline: 0 0;
}

.list-view__item {
    padding: 0.2em 0.5em;
    transition-duration: var(--transition-duration);

    &:hover {
        background-color: #EEE;
    }
}

/* Progress Bars */

.progress-circle-indeterminate {
    height: 2em;
    width: 2em;

    border: 0.25em solid var(--bg-color);
    border-right: 0.25em solid rgba(var(--bg-color-raw), 0.3);
    border-radius: 50%;

    animation: rotate360 1.5s linear 0s infinite running;
}

@keyframes rotate360 {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    overflow: hidden;

    background-color: rgba(var(--bg-color-raw), 0.2);
    border-radius: 4px;
}

.progress-bar-value {
    height: 100%;

    background-color: var(--bg-color);
    border-radius: 4px;
}

.progress-bar-indeterminate {
    width: 20%;
    animation: 2s ease 0s infinite alternate prgbr-indeterminate;
}

@keyframes prgbr-indeterminate {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(500%);
    }
}

/* === End component definitions === */

/* Font sizes */

.body0 {
    font-size: 18px;
    line-height: 24px;
}

.body1 {
    font-size: 16px;
}

.body2 {
    font-size: 14px;
}

.heading1 {
    font-size: 40px;
    font-weight: 300;
}

/* === Start Theme Definitions === */

.theme-primary {
    --bg-color: rgb(var(--primary-bg-color));
    --bg-color-raw: var(--primary-bg-color);
    --fg-color: rgb(var(--primary-fg-color));
    --fg-color-faw: var(--primary-fg-color);

    --disabled-color: rgb(var(--primary-disabled-color-raw));
    --disabled-color-raw: var(--primary-disabled-color-raw);
}

.theme-primary-l1 {
    --bg-color: rgb(var(--primary-bg-color-l1));
    --bg-color-raw: var(--primary-bg-color-l1);
    --fg-color: rgb(var(--primary-fg-color));
    --fg-color-raw: var(--primary-fg-color);
}

.theme-error {
    --bg-color: #f04848;
    --bg-color-raw: 240, 72, 72;
}

.theme-flat {
    --bg-color: transparent;
    --bg-color-raw: transparent;
    --fg-color: rgb(var(--primary-bg-color));
    --fg-color-raw: var(--primary-bg-color);

    --disabled-color: transparent;
    --disabled-color-raw: transparent;

    box-shadow: none;

    &:hover {
        --bg-color: rgba(var(--primary-bg-color), 0.15);
    }

    &:disabled {
        --fg-color: rgb(var(--primary-disabled-color-raw));
        --fg-color-raw: var(--primary-disabled-color-raw);
    }
}

.theme-accent {
    --bg-color: rgb(var(--accent-bg-color));
    --bg-color-raw: var(--accent-bg-color);
    --fg-color: rgb(var(--accent-fg-color));
    --fg-color-raw: var(--accent-fg-color);
}

/* === End theme definitions === */