Clock Ui-Dark/light button

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<title>Andev Web</title>
    </head>
    <body>
        <section class="clock container">
            <div class="clock__container grid">
                <div class="clock__content grid">
                    <div class="clock__circle">
                        <span class="clock__twelve"></span>
                        <span class="clock__three"></span>
                        <span class="clock__six"></span>
                        <span class="clock__nine"></span>
    
                        <div class="clock__rounder"></div>
                        <div class="clock__hour" id="clock-hour"></div>
                        <div class="clock__minutes" id="clock-minutes"></div>
                        <div class="clock__seconds" id="clock-seconds"></div>

<div class="clock__theme">
                            <i class='bx bxs-moon' id="theme-button"></i>
                        </div>
                    </div>

<script src="main.js"></script>
    </body>
</html>

CSS

/*=============== GOOGLE FONTS ===============*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500&display=swap");

/*=============== VARIABLES CSS ===============*/
:root {
  /*========== Colors ==========*/
  --hue-color: 240;

--first-color: hsl(var(--hue-color), 53%, 49%);
  --title-color: hsl(var(--hue-color), 53%, 15%);
  --text-color: hsl(var(--hue-color), 12%, 35%);
  --text-color-light: hsl(var(--hue-color), 12%, 65%);
  --white-color: #FFF;
  --body-color: hsl(var(--hue-color), 24%, 94%);

/*========== Font and typography ==========*/
  --body-font: 'Poppins', sans-serif;
  --biggest-font-size: 3rem;
  --small-font-size: .813rem;
  --smaller-font-size: .75rem;
  --tiny-font-size: .625rem;

/*========== Font weight ==========*/
  --font-medium: 500;

/*========== Margenes Bottom ==========*/
  --mb-0-25: .25rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2-5: 2.5rem;

/*========== z index ==========*/
  --z-normal: 1;
  --z-tooltip: 10;
}

@media screen and (min-width: 968px) {
  :root {
    --biggest-font-size: 3.5rem;
    --small-font-size: .875rem;
    --smaller-font-size: .813rem;
    --tiny-font-size: .75rem;
  }
}

/*========== Variables Dark theme ==========*/
body.dark-theme {
  --title-color: hsl(var(--hue-color), 12%, 95%);
  --text-color: hsl(var(--hue-color), 12%, 75%);
  --body-color: hsl(var(--hue-color), 10%, 16%);
}

/*========== Button Dark/Light ==========*/
.clock__theme {
  position: absolute;
  top: -1rem;
  right: -1rem;
  display: flex;
  padding: .25rem;
  border-radius: 50%;
  box-shadow: inset -1px -1px 1px hsla(var(--hue-color), 0%, 100%, 1), 
              inset 1px 1px 1px hsla(var(--hue-color), 30%, 86%, 1);
  color: var(--first-color);
  cursor: pointer;
  transition: .4s; // For dark mode animation
}

/*========== Box shadow Dark theme ==========*/
.dark-theme .clock__circle {
  box-shadow: 6px 6px 16px hsla(var(--hue-color), 8%, 12%, 1), 
              -6px -6px 16px hsla(var(--hue-color), 8%, 20%, 1), 
              inset -6px -6px 16px hsla(var(--hue-color), 8%, 20%, 1), 
              inset 6px 6px 12px hsla(var(--hue-color), 8%, 12%, 1);
}

.dark-theme .clock__theme {
  box-shadow: inset -1px -1px 1px hsla(var(--hue-color), 8%, 20%, 1), 
              inset 1px 1px 1px hsla(var(--hue-color), 8%, 12%, 1);
}

/*=============== BASE ===============*/
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

body {
  margin: 0;
  font-family: var(--body-font);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: .4s; // For dark mode animation
}

a {
  text-decoration: none;
}

/*=============== REUSABLE CSS CLASSES ===============*/
.container {
  max-width: 968px;
  margin-left: var(--mb-1);
  margin-right: var(--mb-1);
}

.grid {
  display: grid;
}

/*=============== CLOCK ===============*/
.clock__container {
  height: 100vh;
  grid-template-rows: 1fr max-content;
}

.clock__circle {
  position: relative;
  width: 200px;
  height: 200px;
  box-shadow: -6px -6px 16px var(--white-color), 
              6px 6px 16px hsla(var(--hue-color), 30%, 86%, 1), 
              inset 6px 6px 16px hsla(var(--hue-color), 30%, 86%, 1), 
              inset -6px -6px 16px var(--white-color);
  border-radius: 50%;
  justify-self: center;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: .4s; // For dark mode animation
}

.clock__content {
  align-self: center;
  row-gap: 3.5rem;
}

.clock__twelve, 
.clock__three, 
.clock__six, 
.clock__nine {
  position: absolute;
  width: 1rem;
  height: 1px;
  background-color: var(--text-color-light);
}

.clock__twelve, 
.clock__six {
  transform: translateX(-50%) rotate(90deg);
}

.clock__twelve {
  top: 1.25rem;
  left: 50%;
}

.clock__three {
  top: 50%;
  right: .75rem;
}

.clock__six {
  bottom: 1.25rem;
  left: 50%;
}

.clock__nine {
  left: .75rem;
  top: 50%;
}

.clock__rounder {
  width: .75rem;
  height: .75rem;
  background-color: var(--first-color);
  border-radius: 50%;
  border: 2px solid var(--body-color);
  z-index: var(--z-tooltip);
}

.clock__hour, 
.clock__minutes, 
.clock__seconds {
  position: absolute;
  display: flex;
  justify-content: center;
}
.clock__hour {
  width: 105px;
  height: 105px;
}

.clock__hour::before {
  content: '';
  position: absolute;
  background-color: var(--text-color);
  width: .25rem;
  height: 3rem;
  border-radius: .75rem;
  z-index: var(--z-normal);
}

.clock__minutes {
  width: 136px;
  height: 136px;
}

.clock__minutes::before {
  content: '';
  position: absolute;
  background-color: var(--text-color);
  width: .25rem;
  height: 4rem;
  border-radius: .75rem;
  z-index: var(--z-normal);
}

.clock__seconds {
  width: 130px;
  height: 130px;
}

.clock__seconds::before {
  content: '';
  position: absolute;
  background-color: var(--first-color);
  width: .125rem;
  height: 5rem;
  border-radius: .75rem;
  z-index: var(--z-normal);
}

.clock__logo {
  width: max-content;
  justify-self: center;
  margin-bottom: var(--mb-2-5);
  font-size: var(--smaller-font-size);
  font-weight: var(--font-medium);
  color: var(--text-color-light);
  transition: .3s;
}

.clock__logo:hover {
  color: var(--first-color);
}

.clock__text {
  display: flex;
  justify-content: center;
}

.clock__text-hour, 
.clock__text-minutes {
  font-size: var(--biggest-font-size);
  font-weight: var(--font-medium);
  color: var(--title-color);
}

.clock__text-ampm {
  font-size: var(--tiny-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
  margin-left: var(--mb-0-25);
}

.clock__date {
  text-align: center;
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
}

/*=============== MEDIA QUERIES ===============*/
/* For large devices */
@media screen and (min-width: 968px) {
  .container {
    margin-left: auto;
    margin-right: auto;
  }
  .clock__logo {
    margin-bottom: 3rem;
  }
}

JS

/*==================== CLOCK ====================*/
const hour = document.getElementById('clock-hour'),
      minutes = document.getElementById('clock-minutes'),
      seconds = document.getElementById('clock-seconds')

const clock = () =>{
    let date = new Date()

let hh = date.getHours() * 30,
        mm = date.getMinutes() * 6,
        ss = date.getSeconds() * 6
        
    // We add a rotation to the elements
    hour.style.transform = `rotateZ(${hh + mm / 12}deg)`
    minutes.style.transform = `rotateZ(${mm}deg)`
    seconds.style.transform = `rotateZ(${ss}deg)`
}
setInterval(clock, 1000) // 1000 = 1s

/*==================== CLOCK & DATE TEXT ====================*/
const textHour = document.getElementById('text-hour'),
      textMinutes = document.getElementById('text-minutes'),
      textAmPm = document.getElementById('text-ampm'),
    //   dateWeek = document.getElementById('date-day-week'),
      dateDay = document.getElementById('date-day'),
      dateMonth = document.getElementById('date-month'),
      dateYear = document.getElementById('date-year')

const clockText = () =>{
    let date = new Date()

let hh = date.getHours(),
        ampm,
        mm = date.getMinutes(),
        day = date.getDate(),
        // dayweek = date.getDay(),
        month = date.getMonth(),
        year = date.getFullYear()

// We change the hours from 24 to 12 hours and establish whether it is AM or PM
    if(hh >= 12){
        hh = hh - 12
        ampm = 'PM'
    }else{
        ampm = 'AM'
    }

// We detect when it's 0 AM and transform to 12 AM
    if(hh == 0){hh = 12}

// Show a zero before hours
    if(hh < 10){hh = `0${hh}`}

// Show time
    textHour.innerHTML = `${hh}:`
    
    // Show a zero before the minutes
    if(mm < 10){mm = `0${mm}`}
    
    // Show minutes
    textMinutes.innerHTML = mm

// Show am or pm
    textAmPm.innerHTML = ampm

// If you want to show the name of the day of the week
    // let week = ['Sun', 'Mon', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat']

// We get the months of the year and show it
    let months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']

// We show the day, the month and the year
    dateDay.innerHTML = day
    // dateWeek.innerHTML = `${week[dayweek]}`
    dateMonth.innerHTML = `${months[month]},`
    dateYear.innerHTML = year
}
setInterval(clockText, 1000) // 1000 = 1s

/*==================== DARK/LIGHT THEME ====================*/
const themeButton = document.getElementById('theme-button')
const darkTheme = 'dark-theme'
const iconTheme = 'bxs-sun'

// Previously selected topic (if user selected)
const selectedTheme = localStorage.getItem('selected-theme')
const selectedIcon = localStorage.getItem('selected-icon')

// We obtain the current theme that the interface has by validating the dark-theme class
const getCurrentTheme = () => document.body.classList.contains(darkTheme) ? 'dark' : 'light'
const getCurrentIcon = () => themeButton.classList.contains(iconTheme) ? 'bxs-moon' : 'bxs-sun'

// We validate if the user previously chose a topic
if (selectedTheme) {
  // If the validation is fulfilled, we ask what the issue was to know if we activated or deactivated the dark
  document.body.classList[selectedTheme === 'dark' ? 'add' : 'remove'](darkTheme)
  themeButton.classList[selectedIcon === 'bxs-moon' ? 'add' : 'remove'](iconTheme)
}

// Activate / deactivate the theme manually with the button
themeButton.addEventListener('click', () => {
    // Add or remove the dark / icon theme
    document.body.classList.toggle(darkTheme)
    themeButton.classList.toggle(iconTheme)
    // We save the theme and the current icon that the user chose
    localStorage.setItem('selected-theme', getCurrentTheme())
    localStorage.setItem('selected-icon', getCurrentIcon())
})

Clock Ui-Dark/light button

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