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HTML

              
                input(type='checkbox')
input(type='checkbox')
input(type='checkbox')
input(type='checkbox')
.wrapper
  svg(xmlns='http://www.w3.org/2000/svg' viewbox='0 0 98.138617 90.336713')
    g.light-bulb.light-bulb--3
      path.light-bulb__chord(d='M45.1005633.00870392v68.74491' fill='none' stroke-width='.5291667')
      g.light-bulb__bulb(transform='translate(2.5955317 -211.35093658)')
        circle.light-bulb__glass(r='3.8407259' cy='286.7189' cx='42.372742' stroke-width='.25604835' stroke-linecap='round' stroke-linejoin='round')
        rect.light-bulb__fitting(ry='.37417734' y='279.35907' x='39.8592' height='3.96875' width='5.2916665')
        g.light-bulb__filament
          path.light-bulb__filament(d='M43.563367 283.32784v2.64583M41.446699 283.32784v2.64583' stroke-width='.21696301')
          path.light-bulb__filament(d='M42.505033 285.17992v1.32292M41.975866 285.17992v1.32292M43.0342 285.17992v1.32292' stroke-width='.25654384')
        path.light-bulb__fitting-shine(d='M43.298786 279.35907h1.5875v3.96875h-1.5875z')
        circle.light-bulb__bloom(r='3.5018382' cx='42.372742' cy='286.7189' stroke-width='.93382347' stroke-linecap='round' stroke-linejoin='round')
    g.light-bulb.light-bulb--6
      path.light-bulb__chord(d='M68.9130633.00870392v68.74491' fill='none' stroke-width='.5291667')
      g.light-bulb__bulb(transform='translate(26.4080317 -211.35093658)')
        circle.light-bulb__glass(cx='42.372742' cy='286.7189' r='3.8407259' stroke-width='.25604835' stroke-linecap='round' stroke-linejoin='round')
        rect.light-bulb__fitting(width='5.2916665' height='3.96875' x='39.8592' y='279.35907' ry='.37417734')
        g.light-bulb__filament
          path.light-bulb__filament(d='M43.563367 283.32784v2.64583M41.446699 283.32784v2.64583' stroke-width='.21696301')
          path.light-bulb__filament(d='M42.505033 285.17992v1.32292M41.975866 285.17992v1.32292M43.0342 285.17992v1.32292' stroke-width='.25654384')
        path.light-bulb__fitting-shine(d='M43.298786 279.35907h1.5875v3.96875h-1.5875z')
        circle.light-bulb__bloom(cy='286.7189' cx='42.372742' r='3.5018382' stroke-linecap='round' stroke-linejoin='round')
    g.light-bulb.light-bulb--5
      path.light-bulb__chord(d='M60.9755633.00870392v68.74491' fill='none' stroke-width='.5291667')
      g.light-bulb__bulb(transform='translate(18.4705317 -211.35093658)')
        circle.light-bulb__glass(r='3.8407259' cy='286.7189' cx='42.372742' stroke-width='.25604835' stroke-linecap='round' stroke-linejoin='round')
        rect.light-bulb__fitting(ry='.37417734' y='279.35907' x='39.8592' height='3.96875' width='5.2916665')
        g.light-bulb__filament
          path.light-bulb__filament(d='M43.563367 283.32784v2.64583M41.446699 283.32784v2.64583' stroke-width='.21696301')
          path.light-bulb__filament(d='M42.505033 285.17992v1.32292M41.975866 285.17992v1.32292M43.0342 285.17992v1.32292' stroke-width='.25654384')
        path.light-bulb__fitting-shine(d='M43.298786 279.35907h1.5875v3.96875h-1.5875z')
        circle.light-bulb__bloom(r='3.5018382' cx='42.372742' cy='286.7189' stroke-linecap='round' stroke-linejoin='round')
    g.light-bulb.light-bulb--2
      path.light-bulb__chord(d='M37.1630633.00870392v68.74491' fill='none' stroke-width='.5291667')
      g.light-bulb__bulb(transform='translate(-5.3419683 -211.35093658)')
        circle.light-bulb__glass(cx='42.372742' cy='286.7189' r='3.8407259' stroke-width='.25604835' stroke-linecap='round' stroke-linejoin='round')
        rect.light-bulb__fitting(width='5.2916665' height='3.96875' x='39.8592' y='279.35907' ry='.37417734')
        g.light-bulb__filament
          path.light-bulb__filament(d='M43.563367 283.32784v2.64583M41.446699 283.32784v2.64583' stroke-width='.21696301')
          path.light-bulb__filament(d='M42.505033 285.17992v1.32292M41.975866 285.17992v1.32292M43.0342 285.17992v1.32292' stroke-width='.25654384')
        path.light-bulb__fitting-shine(d='M43.298786 279.35907h1.5875v3.96875h-1.5875z')
        circle.light-bulb__bloom(cy='286.7189' cx='42.372742' r='3.5018382' stroke-linecap='round' stroke-linejoin='round')
    g.light-bulb.light-bulb--1
      path.light-bulb__chord(d='M29.2255633.00870392v68.74491' fill='none' stroke-width='.5291667')
      g.light-bulb__bulb(transform='translate(-13.2794683 -211.35093658)')
        circle.light-bulb__glass(r='3.8407259' cy='286.7189' cx='42.372742' stroke-width='.25604835' stroke-linecap='round' stroke-linejoin='round')
        rect.light-bulb__fitting(ry='.37417734' y='279.35907' x='39.8592' height='3.96875' width='5.2916665')
        g.light-bulb__filament
          path.light-bulb__filament(d='M43.563367 283.32784v2.64583M41.446699 283.32784v2.64583' stroke-width='.21696301')
          path.light-bulb__filament(d='M42.505033 285.17992v1.32292M41.975866 285.17992v1.32292M43.0342 285.17992v1.32292' stroke-width='.25654384')
        path.light-bulb__fitting-shine(d='M43.298786 279.35907h1.5875v3.96875h-1.5875z')
        circle.light-bulb__bloom(r='3.5018382' cx='42.372742' cy='286.7189' stroke-linecap='round' stroke-linejoin='round')
    g.light-bulb.light-bulb--4
      path.light-bulb__chord(d='M53.0380634.00870392v68.74491' fill='none' stroke-width='.5291667')
      g.light-bulb__bulb(transform='translate(10.5330318 -211.35093658)')
        circle.light-bulb__glass(cx='42.372742' cy='286.7189' r='3.8407259' stroke-width='.25604835' stroke-linecap='round' stroke-linejoin='round')
        rect.light-bulb__fitting(width='5.2916665' height='3.96875' x='39.8592' y='279.35907' ry='.37417734')
        g.light-bulb__filament
          path.light-bulb__filament(d='M43.563367 283.32784v2.64583M41.446699 283.32784v2.64583' fill='none' stroke-width='.21696301')
          path.light-bulb__filament(d='M42.505033 285.17992v1.32292M41.975866 285.17992v1.32292M43.0342 285.17992v1.32292' fill='none' stroke-width='.25654384')
        path.light-bulb__fitting-shine(d='M43.298786 279.35907h1.5875v3.96875h-1.5875z')
        circle.light-bulb__bloom(cy='286.7189' cx='42.372742' r='3.5018382' stroke-linecap='round' stroke-linejoin='round')
.banner-container
              
            
!

CSS

              
                *
  box-sizing border-box

:root
  --filament-saturation 0
  --filament-lightness 40
  --fitting-lightness 30
  --chord-lightness 50
  --bg-lightness 5
  --glass-lightness 30
  --glass-saturation 0
  --light-alpha 0
  --ceiling 50
  --bulb-hue 60

  // @media(prefers-color-scheme: light)
  //   --chord-lightness 40
  //   --bg-lightness 90
  //   --glass-lightness 80
  //   --glass-saturation 0
  //   --filament-saturation 0
  //   --filament-lightness 70
  //   --fitting-lightness 80
  //   --light-alpha 0
  //   --ceiling 40
  //   --bulb-hue 60

body
  background 'hsl(215, 100%, %s)' % calc(var(--bg-lightness) * 1%)
  display flex
  align-items center
  justify-content center
  min-height 100vh

svg
  width 90vmin
  transform translate(0, -30%)

.wrapper
  position relative
  &:after
    content ""
    width 90vmin
    position absolute
    bottom 130%
    left 0%
    border-bottom '4px solid hsl(0, 0%, %s)' % calc(var(--ceiling) * 1%)
    transform translate(0, 2px)

.light-bulb
  display block

  &__chord
    stroke 'hsl(0, 0%, %s)' % calc(var(--chord-lightness) * 1%)

  &__glass
    fill 'hsla(%s, 100%, %s, %s)' % (var(--bulb-hue) calc(var(--glass-lightness) * 1%) var(--light-alpha))
    stroke 'hsla(%s, %s, %s, 1)' % (var(--bulb-hue) calc(var(--glass-saturation) * 1%) calc(var(--glass-lightness) * 1%))

  &__filament
    fill none
    stroke 'hsl(60, %s, %s)' % (calc(var(--filament-saturation) * 1%) calc(var(--filament-lightness) * 1%))

  &__fitting
    fill 'hsl(0, 0%, %s)' % calc(var(--fitting-lightness) * 1%)

  &__fitting-shine
    fill 'hsl(0, 0%, %s)' % calc((var(--fitting-lightness) + 20) * 1%)

  &__bloom
    fill none
    stroke 'hsl(%s, 100%, 50%)' % var(--bulb-hue)
    stroke-width 2
    opacity 0


// EASTER EGG
[type='checkbox']
  position fixed
  bottom 1rem
  opacity .1

  &:nth-of-type(1)
    right 1rem

    &:checked ~ .wrapper svg
      .light-bulb:nth-of-type(odd)
        --bulb-hue 90
      .light-bulb:nth-of-type(even)
        --bulb-hue 0

  &:nth-of-type(2)
    right 2rem

    &:checked ~ .wrapper svg
      .light-bulb--1
        --bulb-hue 0
      .light-bulb--2
        --bulb-hue 30
      .light-bulb--3
        --bulb-hue 60
      .light-bulb--4
        --bulb-hue 90
      .light-bulb--5
        --bulb-hue 200
      .light-bulb--6
        --bulb-hue 270

  &:nth-of-type(3)
    right 3rem

    &:checked ~ .wrapper svg
      .light-bulb--1
        --bulb-hue 60
      .light-bulb--2
        --bulb-hue 120
      .light-bulb--3
        --bulb-hue 180
      .light-bulb--4
        --bulb-hue 240
      .light-bulb--5
        --bulb-hue 300
      .light-bulb--6
        --bulb-hue 360

  &:nth-of-type(4)
    right 4rem

    &:checked ~ .wrapper svg
      .light-bulb--1
        --bulb-hue 10
      .light-bulb--2
        --bulb-hue 20
      .light-bulb--3
        --bulb-hue 30
      .light-bulb--4
        --bulb-hue 40
      .light-bulb--5
        --bulb-hue 50
      .light-bulb--6
        --bulb-hue 60

.banner-container
  position fixed
  bottom 0
  left 50%
  transform translate(-50%, 0)

.hue-banner
  color 'hsl(%s, 100%, 50%)' % var(--hue, 0)
  border-color 'hsl(%s, 100%, 50%)' % var(--hue, 0)
  border-style solid
  border-width 4px
  border-radius 4px
  margin-bottom 1rem
  padding 1rem
  font-weight bold
  font-family -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif
  line-height 1.5
  animation fadeToBlack 0.5s 1s both

@keyframes fadeToBlack
  to
    opacity 0



              
            
!

JS

              
                // eslint-disable-next-line
;(function() {
  const {
    // GSDevTools,
    gsap,
    gsap: { timeline, to, fromTo },
  } = window

  const CURVES = {
    RIGHT:
      'M68.91306296.0087038s.77124463 23.43903799 6.34896852 36.75152668c9.014994 21.51630343 16.57659448 28.05805003 16.57659448 28.05805003',
    LEFT:
      'M29.2255629.00870376s-.77124454 23.43903794-6.34896837 36.75152662C13.86160061 58.2765338 6.3000002 64.81828041 6.3000002 64.81828041',
  }
  const STRAIGHTS = {
    LEFT: 'M29.2255633.00870392v68.74491',
    RIGHT: 'M68.9130633.00870392v68.74491',
  }

  const SPEEDS = {
    ON: 0.05,
    STAGGER: 0.05,
    SWING: 0.5,
    EASE: 4,
  }
  // Disabled for now
  // const isLightMode = window.matchMedia('(prefers-color-scheme: light)').matches
  const isLightMode = false
  const CONFIG = {
    ROTATION: 30,
    FILAMENT: {
      LIGHTNESS: {
        OFF: isLightMode ? 70 : 40,
        ON: 100,
      },
    },
    GLASS: {
      ALPHA: {
        ON: 1,
        OFF: 0,
      },
      SATURATION: {
        ON: 100,
        OFF: 0,
      },
      LIGHTNESS: {
        ON: isLightMode ? 80 : 50,
        OFF: isLightMode ? 80 : 30,
      },
    },
  }

  // DOM ORDERING IS 3, 6, 5, 2, 1, 4 🤦‍♂
  const BULBS = document.querySelectorAll('.light-bulb__bulb')
  const GLASSES = document.querySelectorAll('.light-bulb__glass')
  const CHORDS = document.querySelectorAll('.light-bulb__chord')
  const BLOOMS = document.querySelectorAll('.light-bulb__bloom')
  const FILAMENTS = document.querySelectorAll('g.light-bulb__filament')

  // Set transform origin on swinging bulbs
  gsap.set('.wrapper', { display: 'block' })
  gsap.set(BULBS[1], { transformOrigin: `50% -375%`, rotate: -CONFIG.ROTATION })
  gsap.set(CHORDS[1], { morphSVG: { d: CURVES.RIGHT } })
  gsap.set(GLASSES, { '--light-alpha': CONFIG.GLASS.ALPHA.OFF })
  gsap.set(GLASSES[1], {
    '--light-alpha': CONFIG.GLASS.ALPHA.ON,
    '--glass-saturation': CONFIG.GLASS.SATURATION.ON,
    '--glass-lightness': CONFIG.GLASS.LIGHTNESS.ON,
  })
  gsap.set(BULBS[4], { transformOrigin: '50% -375%' })
  gsap.set(BLOOMS, { scale: 0, transformOrigin: '50% 50%' })
  gsap.set(FILAMENTS[1], {
    '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.ON,
  })

  //Create sub timelines
  const SWING_LEFT_TL = new timeline()
    .add(
      to(CHORDS[4], {
        ease: `power${SPEEDS.EASE}.out`,
        duration: SPEEDS.SWING,
        morphSVG: {
          d: CURVES.LEFT,
        },
      }),
      0
    )
    .add(
      to(BULBS[4], {
        ease: `power${SPEEDS.EASE}.out`,
        rotate: CONFIG.ROTATION,
        duration: SPEEDS.SWING,
      }),
      0
    )
    .add(
      to(GLASSES[4], {
        '--light-alpha': CONFIG.GLASS.ALPHA.ON,
        '--glass-saturation': CONFIG.GLASS.SATURATION.ON,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.ON,
        duration: SPEEDS.ON,
      }),
      0
    )
    .add(
      to(FILAMENTS[4], {
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.ON,
        duration: SPEEDS.ON,
      }),
      0
    )
    .add(
      to(BLOOMS[4], {
        duration: SPEEDS.ON * 5,
        scale: 1.3,
        opacity: 0,
      }),
      0
    )
    .add(
      to(CHORDS[4], {
        ease: `power${SPEEDS.EASE}.in`,
        duration: SPEEDS.SWING,
        morphSVG: {
          d: STRAIGHTS.LEFT,
        },
      }),
      SPEEDS.SWING
    )
    .add(
      to(BULBS[4], {
        ease: `power${SPEEDS.EASE}.in`,
        rotate: 0,
        duration: SPEEDS.SWING,
      }),
      SPEEDS.SWING
    )
    .add(
      to(GLASSES[4], {
        duration: SPEEDS.ON,
        '--light-alpha': CONFIG.GLASS.ALPHA.OFF,
        '--glass-saturation': CONFIG.GLASS.SATURATION.OFF,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.OFF,
      }),
      'SWINGING_BACK'
    )
    .add(
      to(FILAMENTS[4], {
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.OFF,
        duration: SPEEDS.ON,
      }),
      'SWINGING_BACK'
    )

  const SWING_RIGHT_TL = new timeline()
    .add(
      to(CHORDS[1], SPEEDS.SWING, {
        ease: `power${SPEEDS.EASE}.in`,
        morphSVG: {
          d: STRAIGHTS.RIGHT,
        },
      }),
      0
    )
    .add(
      to(BULBS[1], SPEEDS.SWING, {
        ease: `power${SPEEDS.EASE}.in`,
        rotate: 0,
      }),
      0
    )
    .add(
      to(
        GLASSES[1],
        {
          duration: SPEEDS.ON,
          '--light-alpha': CONFIG.GLASS.ALPHA.OFF,
          '--glass-saturation': CONFIG.GLASS.SATURATION.OFF,
          '--glass-lightness': CONFIG.GLASS.LIGHTNESS.OFF,
        },
        'SWITCH_OFF'
      )
    )
    .add(
      to(FILAMENTS[1], {
        duration: SPEEDS.ON,
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.OFF,
      }),
      'SWITCH_OFF'
    )

  const FLASH_TL = new timeline()
    .add(
      to([GLASSES[2], GLASSES[5], GLASSES[0], GLASSES[3]], {
        duration: SPEEDS.ON,
        stagger: SPEEDS.STAGGER,
        '--light-alpha': CONFIG.GLASS.ALPHA.ON,
        '--glass-saturation': CONFIG.GLASS.SATURATION.ON,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.ON,
      }),
      'SWITCHING_ON'
    )
    .add(
      to([BLOOMS[2], BLOOMS[5], BLOOMS[0], BLOOMS[3]], {
        duration: SPEEDS.ON * 5,
        stagger: SPEEDS.STAGGER,
        scale: 1.25,
        opacity: 0,
      }),
      'SWITCHING_ON'
    )
    .add(
      to([FILAMENTS[2], FILAMENTS[5], FILAMENTS[0], FILAMENTS[3]], {
        duration: SPEEDS.ON,
        stagger: SPEEDS.STAGGER,
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.ON,
      }),
      'SWITCHING_ON'
    )
    .add(
      to([GLASSES[2], GLASSES[5], GLASSES[0], GLASSES[3]], {
        duration: SPEEDS.ON * 2,
        stagger: SPEEDS.STAGGER,
        '--light-alpha': CONFIG.GLASS.ALPHA.OFF,
        '--glass-saturation': CONFIG.GLASS.SATURATION.OFF,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.OFF,
      }),
      SPEEDS.ON
    )
    .add(
      to([FILAMENTS[2], FILAMENTS[5], FILAMENTS[0], FILAMENTS[3]], {
        duration: SPEEDS.ON * 2,
        stagger: SPEEDS.STAGGER,
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.OFF,
      }),
      SPEEDS.ON
    )

  const FLASH_BACK_TL = new timeline()
    .add(
      to([GLASSES[3], GLASSES[0], GLASSES[5], GLASSES[2]], {
        duration: SPEEDS.ON,
        stagger: SPEEDS.STAGGER,
        '--light-alpha': CONFIG.GLASS.ALPHA.ON,
        '--glass-saturation': CONFIG.GLASS.SATURATION.ON,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.ON,
      }),
      'SWITCHING_ON_2'
    )
    .add(
      fromTo(
        [BLOOMS[3], BLOOMS[0], BLOOMS[5], BLOOMS[2]],
        {
          scale: 0,
          opacity: 1,
        },
        {
          scale: 1.25,
          opacity: 0,
          duration: SPEEDS.ON * 5,
          stagger: SPEEDS.STAGGER,
        }
      ),
      'SWITCHING_ON_2'
    )
    .add(
      to([FILAMENTS[3], FILAMENTS[0], FILAMENTS[5], FILAMENTS[2]], {
        duration: SPEEDS.ON,
        stagger: SPEEDS.STAGGER,
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.ON,
      }),
      'SWITCHING_ON_2'
    )
    .add(
      to([GLASSES[3], GLASSES[0], GLASSES[5], GLASSES[2]], {
        duration: SPEEDS.ON * 2,
        stagger: SPEEDS.STAGGER,
        '--light-alpha': CONFIG.GLASS.ALPHA.OFF,
        '--glass-saturation': CONFIG.GLASS.SATURATION.OFF,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.OFF,
      }),
      SPEEDS.ON
    )
    .add(
      to([FILAMENTS[3], FILAMENTS[0], FILAMENTS[5], FILAMENTS[2]], {
        duration: SPEEDS.ON * 2,
        stagger: SPEEDS.STAGGER,
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.OFF,
      }),
      SPEEDS.ON
    )

  const SWING_RIGHT_BACK_TL = new timeline()
    .add(
      to(CHORDS[1], {
        ease: `power${SPEEDS.EASE}.out`,
        duration: SPEEDS.SWING,
        morphSVG: {
          d: CURVES.RIGHT,
        },
      }),
      0
    )
    .add(
      to(BULBS[1], {
        ease: `power${SPEEDS.EASE}.out`,
        duration: SPEEDS.SWING,
        rotation: -CONFIG.ROTATION,
      }),
      0
    )
    .add(
      to(GLASSES[1], {
        '--light-alpha': CONFIG.GLASS.ALPHA.ON,
        '--glass-saturation': CONFIG.GLASS.SATURATION.ON,
        '--glass-lightness': CONFIG.GLASS.LIGHTNESS.ON,
        duration: SPEEDS.ON,
      }),
      0
    )
    .add(
      to(FILAMENTS[1], {
        '--filament-lightness': CONFIG.FILAMENT.LIGHTNESS.ON,
        duration: SPEEDS.ON,
      }),
      0
    )
    .add(
      to(BLOOMS[1], {
        duration: SPEEDS.ON * 5,
        stagger: SPEEDS.STAGGER,
        scale: 1.3,
        opacity: 0,
      }),
      0
    )

  const BULBS_TL = new timeline({ repeat: -1 })

  BULBS_TL.add(SWING_RIGHT_TL, 'SWING_IN')
  BULBS_TL.add(FLASH_TL, `>-${SPEEDS.ON * 2}`)
  BULBS_TL.add(SWING_LEFT_TL, `>-${SPEEDS.ON * 4}`)
  BULBS_TL.add(FLASH_BACK_TL, `>-${SPEEDS.ON}`)
  BULBS_TL.add(SWING_RIGHT_BACK_TL, `>-${SPEEDS.ON * 4}`)

  /**
   * Easter EGG - Type to Hue
   */
  const CONTAINER = document.querySelector('.banner-container')
  let HUE = ''
  const processHue = e => {
    if (e.key !== undefined && parseInt(e.key, 10) !== undefined) {
      HUE += e.key
      if (HUE.length === 3) {
        if (HUE >= 0 && HUE <= 360) {
          for (const BULB of BULBS) {
            BULB.style.setProperty('--bulb-hue', HUE)
          }
          const BANNER = document.createElement('div')
          BANNER.className = 'hue-banner'
          BANNER.style = `--hue: ${HUE};`
          BANNER.innerHTML = `Hue changed to ${HUE}`
          CONTAINER.appendChild(BANNER)
          BANNER.addEventListener('animationend', BANNER.remove)
        }
        // Reset the hue regardless of whether it is valid
        HUE = ''
      }
    }
  }
  window.addEventListener('keyup', processHue)
  // GSDevTools.create()
})()

              
            
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999px

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