style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap");

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
  color: #333;
}

body {
  background: mediumpurple;
  padding-top: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100dvh;
  overflow: hidden;
}

.date-input {
  padding: 10px;
  font-size: 1rem;
  border-radius: 5px;
  border: 1px solid #eee;
}

/* datepicker styles */

.datepicker-container {
  position: relative;
}

.datepicker {
  position: absolute;
  top: 100%;
  z-index: 100;
  margin-top: 2px;
  background: #fff;
  padding: 10px;
  border-radius: 5px;
}

.datepicker button {
  cursor: pointer;
  border: none;
  border-radius: 3px;
  background: transparent;
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  transition: 0.3s;
  touch-action: manipulation;
}

.days,
.dates {
  display: grid;
  grid-template-columns: repeat(7, 32px);
  gap: 10px;
  margin-block: 10px;
}

.days span {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  text-align: center;
}

.dates button {
  color: slategray;
  aspect-ratio: 1;
}

.dates button:disabled {
  opacity: 0.5;
  pointer-events: none;
  user-select: none;
}

.dates button:hover {
  background: rgba(119, 136, 153, 0.1);
}

.dates button.today {
  background: rgba(147, 112, 216, 0.2);
  color: mediumpurple;
}

.dates button.selected {
  background: mediumpurple;
  color: #fff;
}

.datepicker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid #eee;
}

.datepicker-header select,
.datepicker-header input {
  font-size: 14px;
  border: 1px solid #eee;
}

.datepicker-header input {
  max-width: 64px;
}

.datepicker-header button {
  color: slategray;
}

.datepicker-header button:hover {
  color: mediumpurple;
}

.datepicker-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid #eee;
}

.datepicker-footer button {
  background: rgba(119, 136, 153, 0.1);
  padding: 3px 10px;
}

.datepicker-footer button.apply {
  background: mediumpurple;
  color: #fff;
}