Dark Mode Toggle

dark-mode-toggle.markdown

A Pen by John Riggles on CodePen.

License.

index.slim

input.toggle [type="checkbox"]
.bg
main
  h3.heading Heading Text
  hr 
  p Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  p Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
  
  h3.heading Heading Text, too
  hr
  p Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  p At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet ut et voluptates repudiandae sint et molestiae non recusandae. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis 
  p consequatur aut perferendis doloribus asperiores repellat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
  
  h3.heading Heading Text, also!
  hr
  p Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

script.js

// NOT TODAY, FOLKS!

style.scss

// Imports & Mixins
@import url('https://fonts.googleapis.com/css?family=Share');
@import url('https://fonts.googleapis.com/css?family=Open+Sans');
//@import url('https://rsms.me/inter/inter-ui.css');


// breakpoints
@mixin for-size($viewport-size) {
  @if $viewport-size == phone-only {
    @media (max-width: 599px) { @content; }
  } 
  @else if $viewport-size == tablet-portrait-up {
    @media (min-width: 600px) { @content; }
  } 
  @else if $viewport-size == tablet-landscape-up {
    @media (min-width: 900px) { @content; }
  } 
  @else if $viewport-size == desktop-up {
    @media (min-width: 1200px) { @content; }
  } 
  @else if $viewport-size == big-desktop-up {
    @media (min-width: 1800px) { @content; }
  }
}

// SASS Variables
$dark: #111;
$light: #EEE;
$toggle-height: 20px;
$toggle-width: $toggle-height * 2.33;
$border-width: 2px;
$header-font: "Share", sans-serif;
$body-font: "Open Sans", sans-serif;

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  width: 100%;
}

body {
  background-color: $light;
  font-family: $body-font;
  font-size: 16px;
  overflow: auto;
}

main {
  position: absolute;
  @include for-size(phone-only) { // vw<=599px
    left: 10%;
    width: 80%;
  }
  @include for-size(tablet-portrait-up) { // 600<=vw<=899
    left: 14%;
    width: 72%;
  }
  @include for-size(tablet-landscape-up) { // 900<=vw<=1199
    left: 17%;
    width: 66%;
  }
  @include for-size(desktop-up) { // 1200<=vw<=1799
    left: 20%;
    width: 60%;
  }
  @include for-size(big-desktop-up) { // vw>=1800 (yuge!)
    left: 24%;
    width: 52%;
  }
}

hr {
  background-color: #999;
  border: 0;
  height: 1px;
}

.heading {
  color: $dark;
  font-family: $header-font;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0;
  &:not(:first-of-type) {
    margin-top: 2em;
  }
}

p {
  color: lighten($dark, 20%);
  hyphens: auto;
  letter-spacing: 0.02em;
  line-height: 1.33em;
  margin-bottom: 1em;
  position: relative;
  left: 1em;
  text-align: justify;
  width: 95%;
  &:first-letter {
    font-size: 24px;
    font-weight: 600;
    text-transform: uppercase;
  }
}

.bg {
  color: $dark;
  background-color: $light;
  height: 100%;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  transition: 0.25s all linear;
  z-index: -42;
}

.toggle {
  cursor: pointer;
  visibility: hidden;
  height: $toggle-height;
  width: $toggle-width;
  position: fixed;
  top: $toggle-height;
  right: $toggle-height;
  z-index: 2;
  &::before, &::after { // track, slider
    content: "";
    display: block;
    transition: 0.1s all ease-in-out;
    visibility: visible;
  }
  &::before { // track
    background: $light;
    border: $border-width solid $dark;
    border-radius: $toggle-height;
    height: inherit;
    width: inherit;
  }
  &::after { // slider
    background: $dark;
    border-radius: $toggle-height - ($border-width * 4);
    height: $toggle-height - ($border-width * 4);
    width: $toggle-height;
    position: absolute;
    top: $border-width * 2;
    left: $border-width * 2;
  }
  &:checked { // toggle state: checked
    ~ main .heading, ~ main p {
      color: $light;
    }
    &::before { //track
      background: $dark;
      border: $border-width solid $light;
    }
    &::after { // slider
      background: $light;
      left: $toggle-width - $toggle-height - $border-width * 2;
    }
    ~ .bg {
      background: $dark;
    }
  }
}