wp-calypso/client/components/date-picker/style.scss

$date-picker_caption_height: 50px;
$date-picker_nav_button_size: 20px;

.date-picker {
	position: relative;
	padding: 0;
	user-select: none;
	width: 100%;
}

.date-picker__division {
	margin: 8px 0;
	background: var(--color-neutral-5);
}

/*
 * Events Tooltip
 */
.date-picker__icon-wrapper,
.date-picker__social-icon-wrapper {
	height: 18px;
	margin-right: 2px;
	width: 18px;
}

.tooltip.date-picker__events-tooltip .popover__inner {
	max-width: 250px;
	min-width: 100px;
}

.date-picker__calendar-event {
	display: flex;
	max-width: 200px;
	overflow: hidden;
	position: relative;
	width: 100%;

	&::after {
		@include long-content-fade( $color: var( --color-neutral-60 ) );
	}
}

.date-picker__calendar-event .gridicon,
.date-picker__calendar-event .social-logo {
	flex: 0 0 18px;
	position: relative;
	top: -1px;
	left: -1px;
}

.date-picker__event-title {
	flex: 0 1 auto;
	vertical-align: top;
	white-space: nowrap;
	height: 18px;
	line-height: 18px;
}

.date-picker__nav-bar {
	height: 26px;
	text-align: center;
	top: 11px;
	z-index: z-index(".popover", ".date-picker__nav-bar");
}

.date-picker__previous-month,
.date-picker__next-month {
	float: right;
	padding: 1px 8px;
	font-size: $font-body-extra-small;
	text-transform: capitalize;
	cursor: pointer;
	z-index: 2;
	border-width: 1px;

	&:hover {
		color: var(--color-accent);
	}

	&:focus {
		border-width: 1px;
	}
}

.date-picker__previous-month {
	float: left;
}

.date-picker__next-month {
	float: right;
}

.DayPicker-Month {
	display: table;
	width: 100%;
	border-collapse: collapse;
	border-spacing: 0;
	user-select: none;
	margin: 0;
}

.DayPicker-NavBar {
	position: absolute;
	left: 0;
	right: 0;
	height: $date-picker_caption_height;
}

.DayPicker-NavButton {
	position: absolute;
	width: $date-picker_nav_button_size;
	height: $date-picker_nav_button_size;
	line-height: $date-picker_nav_button_size;
	top: ( $date-picker_caption_height - $date-picker_nav_button_size ) * 0.5;
	background-repeat: no-repeat;
	background-position: center;
	background-size: contain;
	cursor: pointer;
	font-size: $font-title-small;

	&::before {
		height: $date-picker_nav_button_size;
	}
}

.DayPicker-Caption {
	display: table-caption;
	text-align: center;
	height: $date-picker_caption_height;
	line-height: $date-picker_caption_height;
	font-size: $font-body;
	margin: 0 $date-picker_nav_button_size * 1.5;
	position: relative;
	cursor: pointer;

	&::first-letter {
		text-transform: uppercase;
	}
}

.DayPicker-Weekdays {
	margin-top: 10px;
	border-top: 1px solid var(--color-neutral-5);
	display: table-header-group;
}

.DayPicker-WeekdaysRow {
	display: table-row;
}

.DayPicker-Weekday {
	display: table-cell;
	padding: 15px 0 10px;
	font-size: $font-body-extra-small;
	text-align: center;
	font-weight: 600;
	color: var(--color-neutral-50);
	text-transform: uppercase;

	abbr {
		border-bottom: none;
		cursor: auto;
		text-decoration: none;
	}
}

.DayPicker-Body {
	display: table-row-group;
}

.DayPicker-Week {
	display: table-row;
}

// - days cell -
// modifiers - clean inherit styles from daypicker component
.date-picker .DayPicker-Day,
.date-picker .DayPicker-Day.DayPicker-Day--selected,
.date-picker .DayPicker-Day.DayPicker-Day--today,
.date-picker
.DayPicker-Day--selected:not(.DayPicker-Day--disabled):not(.DayPicker-Day--outside) {
	background-color: transparent;
}

// default day styles
.DayPicker-Day {
	display: table-cell;
	position: relative;
	height: 34px;
	line-height: 34px;
	vertical-align: middle;
	text-align: center;
	font-size: $font-body-extra-small;
	font-weight: 600;
}

.DayPicker--interactionDisabled .DayPicker-Day {
	cursor: default;
}

// base styles of the cell child element
.DayPicker-Day .date-picker__day {
	content: " ";
	display: block;
	height: 24px;
	width: 24px;
	line-height: 24px;
	border-radius: 50%;
	cursor: pointer;
	border: 1px solid color-mix(in srgb, var(--color-surface) 0%, transparent);
	color: var(--color-neutral-70);
	text-align: center;
	margin: 0 auto;

	&:hover,
	&:focus {
		background-color: var(--color-neutral-5);
	}
}

// `today` day
.DayPicker-Day--today .date-picker__day {
	color: var(--color-text-inverted);
	background-color: var(--color-neutral-light);

	&:hover {
		background-color: var(--color-neutral-50);
	}
}

// `outside` day
.DayPicker-Day--outside .date-picker__day {
	font-weight: normal;
	color: var(--color-neutral-light);
}

// `disabled` day
.DayPicker-Day--disabled:not(.DayPicker-Day--outside) .date-picker__day {
	color: var(--color-neutral-10);
	cursor: default;
}

// `is-selected` day (not today -> adds animation)
.DayPicker-Day.DayPicker-Day--is-selected:not(.DayPicker-Day--today):not(.DayPicker-Day--events)
.date-picker__day {
	color: var(--color-text-inverted);
	animation: isSelectedDay 125ms ease-out;
	background-color: var(--color-accent);
}

// `is-selected` day (today -> no animation)
.DayPicker-Day.DayPicker-Day--is-selected.DayPicker-Day--today .date-picker__day,
.DayPicker-Day.DayPicker-Day--is-selected.DayPicker-Day--events .date-picker__day {
	color: var(--color-text-inverted);
	background-color: var(--color-accent);
}

// `Sunday` day
.DayPicker-Day--sunday .date-picker__day {
	color: var(--color-neutral-light);
}

// `event` day
.DayPicker-Day--events:not(.DayPicker-Day--is-selected) .date-picker__day {
	border-color: var(--color-neutral-light);
}

.DayPicker-Day--events.DayPicker-Day--disabled:not(.DayPicker-Day--is-selected)
.date-picker__day {
	border-color: var(--color-neutral-10);
}

@keyframes isSelectedDay {
	0% {
		transform: scale(0);
		opacity: 0;
	}
	100% {
		transform: scale(1);
		opacity: 1;
	}
}

.DayPicker--ar {
	direction: rtl;
}