// Styling Cross-Browser Compatible Range Inputs with Sass
// Github: https://github.com/darlanrod/input-range-sass
// Author: Darlan Rod https://github.com/darlanrod
// Version 2.0.0
// MIT License

@use 'sass:color';
@use 'sass:math';

// Track Variables
$track-color: #eceff1 !default;
$track-height: 8px !default;
$track-width: 100% !default;
$track-border-width: 2px !default;
$track-border-color: #cfd8dc !default;
$track-border-radius: 5px !default;
$track-shadow-size: 1px !default;
$track-shadow-blur: 1px !default;
$track-shadow-color: rgba(0, 0, 0, 0.2) !default;

// Thumb Variables
$thumb-color: #607d8b !default;
$thumb-height: 24px !default;
$thumb-width: 24px !default;
$thumb-border-width: 2px !default;
$thumb-border-color: #eceff1 !default;
$thumb-border-radius: 12px !default;
$thumb-shadow-size: 4px !default;
$thumb-shadow-blur: 4px !default;
$thumb-shadow-color: rgba(0, 0, 0, 0.2) !default;
$thumb-focus-box-shadow: 0 0 5px rgba(blue, 0.5) !default;
$contrast: 5% !default;

$ie-bottom-track-color: color.adjust($track-color, $lightness: -$contrast) !default;
$thumb-margin-top: (math.div((-$track-border-width * 2 + $track-height), 2) - math.div($thumb-height, 2)) !default;

@mixin shadow($shadow-size, $shadow-blur, $shadow-color) {
  box-shadow: $shadow-size $shadow-size $shadow-blur $shadow-color,
              0 0 $shadow-size color.adjust($shadow-color, $lightness: 5%);
}

[type="range"] {
  appearance: none;
  -webkit-appearance: none; 
  background: transparent;
  margin: math.div($thumb-height, 2) 0;
  width: $track-width;

  &::-moz-focus-outer {
    border: 0;
  }

  &:focus {
    outline: none;

    &::-webkit-slider-runnable-track {
      background: color.adjust($track-color, $lightness: $contrast);
    }

    &::-ms-fill-lower {
      background: $track-color; // Keep original track color
    }

    &::-ms-fill-upper {
      background: color.adjust($track-color, $lightness: $contrast);
    }
  }

  @mixin track {
    cursor: default;
    height: $track-height;
    transition: all 0.2s ease;
    width: $track-width;
    border-radius: $track-border-radius;
  }
    
  &::-webkit-slider-runnable-track {
    @include track;
    @include shadow($track-shadow-size, $track-shadow-blur, $track-shadow-color);
    background: $track-color;
    border: $track-border-width solid $track-border-color;
  }

  &::-moz-range-track {
    @include track();
    @include shadow($track-shadow-size, $track-shadow-blur, $track-shadow-color);
    background: $track-color;
    border: $track-border-width solid $track-border-color;
    height: math.div($track-height, 2); 
  }

  &::-ms-track {
    @include track();
    background: transparent;
    border-color: transparent;
    border-width: math.div($thumb-height, 2) 0;
    color: transparent;
  }

  &::-ms-fill-lower {
    @include shadow($track-shadow-size, $track-shadow-blur, $track-shadow-color);
    background: $ie-bottom-track-color; // Use adjusted color here
    border: $track-border-width solid $track-border-color;
    border-radius: ($track-border-radius * 2);
  }

  &::-ms-fill-upper {
    @include shadow($track-shadow-size, $track-shadow-blur, $track-shadow-color);
    background: $track-color;  // Keep original track color
    border: $track-border-width solid $track-border-color;
    border-radius: ($track-border-radius * 2);
  }

  @mixin thumb {
    @include shadow($thumb-shadow-size, $thumb-shadow-blur, $thumb-shadow-color);
    background: $thumb-color;
    border: $thumb-border-width solid $thumb-border-color;
    border-radius: $thumb-border-radius;
    box-sizing: border-box;
    cursor: default;
    height: $thumb-height;
    width: $thumb-width;

    &:focus {
        box-shadow: $thumb-focus-box-shadow;
    }
  }

  &::-webkit-slider-thumb {
      @include thumb;
      margin-top: $thumb-margin-top;
  }

  &::-moz-range-thumb {
      @include thumb;
  }

  &::-ms-thumb {
    @include thumb;
    margin-top: math.div($track-height, 4); 
  }

  &:disabled {
    &::-webkit-slider-thumb,
    &::-moz-range-thumb,
    &::-ms-thumb,
    &::-webkit-slider-runnable-track,
    &::-ms-fill-lower,
    &::-ms-fill-upper {
      cursor: not-allowed;
    }
  }
}