Date Range Selector

<div class="nuda-range">
  <div class="nuda-range__head">June 2025</div>
  <div class="nuda-range__grid">
    <!-- mark .is-start, .is-end, .in-range as needed -->
    <span class="nuda-range__day is-start">10</span>
    <span class="nuda-range__day in-range">11</span>
    <!-- ... -->
    <span class="nuda-range__day is-end">19</span>
  </div>
</div>

.nuda-range {
  padding: 14px;
  background: rgba(255,255,255,.02);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 14px;
  width: 100%;
  max-width: 260px;
}

.nuda-range__head {
  color: #fafafa;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 10px;
}

.nuda-range__grid {
  display: grid;
  grid-template-columns: repeat(7,1fr);
  gap: 0;
}

.nuda-range__day {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  color: #a0a0a8;
  font-size: 11px;
  cursor: pointer;
  transition: color .2s;
}

.nuda-range__day:hover {
  color: #fafafa;
}

.nuda-range__day.in-range {
  background: rgba(228,255,84,.08);
  color: #fafafa;
}

.nuda-range__day.is-start,.nuda-range__day.is-end {
  background: #e4ff54;
  color: #09090b;
  font-weight: 600;
  border-radius: 7px;
  z-index: 1;
  animation: _rangeBounce .4s cubic-bezier(.16,1,.3,1);
}

.nuda-range__day.is-start {
  box-shadow: 8px 0 rgba(228,255,84,.08);
}

.nuda-range__day.is-end {
  box-shadow: -8px 0 rgba(228,255,84,.08);
}

@keyframes _rangeBounce {
  0% {
    transform: scale(.7);
  }
  60% {
    transform: scale(1.12);
  }
  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-range__day {
    animation: none;
  }
}