<style>
  .countdown{
  --number-color: hsl(0 0% 0%);
  --text-color: hsl(0 0% 25%);
  --dot-color: hsl(0 0% 0%);
  --dot-color-remaining: hsl(182, 100%, 66%);
  --dot-color-active: hsl(0 100% 50%);
  font-family: system-ui, sans-serif;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  width: min(60rem, 100%);
  margin-inline: auto;
  container: inline-size;
  > .part {
    aspect-ratio: 1/1;
    display: grid;
    place-items: center;
    > .remaining {
      grid-area: 1/1;
      color: hsl(0 0% 100%);
      display: grid;
      text-align: center;
      font-size: 4cqi;
      >.number {
        color: var(--number-color);
      }
      >.text {
        color: var(--text-color);
        text-transform: uppercase;
        font-size: 0.5em;
      }
    }
    > .dot-container {
      grid-area: 1/1;
      height: 100%;
      width: 4%;
      rotate: calc(360deg / var(--dots) * var(--dot-idx));
      > .dot {
        width: 100%;
        aspect-ratio: 1/1;
        background-color: var(--dot-color);
        border-radius: 50%;
        transition: background-color .25s;
        &[data-active=true]{
          background-color: var(--dot-color-remaining);
          &[data-lastactive=true]{
            background-color: var(--dot-color-active);
          }
        }
      }
    }
  }
}


h1 {
  font-family: system-ui, sans-serif;
  color: hsl(242 100% 64%);
  text-align: center;
  >span:last-of-type{
    color: hsl(207 52% 49%)
  }
}
</style>

<h1>Countdown <span>Neueröffnung neues Gewerbe</span></h1><br><br>
<div class="countdown" data-target-date="2025-01-25 15:15:25"></div>


<script>
const countdownEls = document.querySelectorAll(".countdown")
countdownEls.forEach(countdownEl => createCountdown(countdownEl))

function createCountdown(countdownEl){
  const target = new Date(new Date(countdownEl.dataset.targetDate).toLocaleString('en', ))
  const parts = {
    days: {text: ["days","day"], dots: 30},
    hours: {text: ["hours","hour"], dots: 24},
    minutes: {text: ["minutes","minute"], dots: 60},
    seconds: {text: ["seconds","second"], dots: 60},
  }

  Object.entries(parts).forEach(([key, value])=>{
    const partEl = document.createElement("div");
    partEl.classList.add("part", key);
    partEl.style.setProperty("--dots", value.dots);
    value.element = partEl;

    const remainingEl = document.createElement("div");
    remainingEl.classList.add("remaining");
    remainingEl.innerHTML = `
      <span class="number"></span>
      <span class="text"></span>
    `
    partEl.append(remainingEl);
    for(let i = 0; i < value.dots; i++){
      const dotContainerEl = document.createElement("div");
      dotContainerEl.style.setProperty("--dot-idx", i);
      dotContainerEl.classList.add("dot-container")
      const dotEl = document.createElement("div");
      dotEl.classList.add("dot")
      dotContainerEl.append(dotEl);
      partEl.append(dotContainerEl);
    }
    countdownEl.append(partEl);
  })
  getRemainingTime(target, parts)
}

function getRemainingTime(target, parts, first=true){
  const now = new Date()
  if(first) console.log({target, now})
  const remaining = {}
  let seconds = Math.floor((target - (now))/1000);
  let minutes = Math.floor(seconds/60);
  let hours = Math.floor(minutes/60);
  let days = Math.floor(hours/24);
  hours = hours-(days*24);
  minutes = minutes-(days*24*60)-(hours*60);
  seconds = seconds-(days*24*60*60)-(hours*60*60)-(minutes*60);
  Object.entries({days, hours, minutes, seconds}).forEach(([key, value])=>{
    const remaining = parts[key].element.querySelector(".number");
    const text = parts[key].element.querySelector(".text");
    remaining.innerText = value;
    text.innerText = parts[key].text[Number(value==1)]
    const dots = parts[key].element.querySelectorAll(".dot")
    dots.forEach((dot, idx)=>{
      dot.dataset.active = idx <= value;
      dot.dataset.lastactive = idx == value;
    })
  })
  if(now <= target){
    window.requestAnimationFrame(()=>{
      getRemainingTime(target, parts, false)
    });
  }
}  
</script>