#theme-color-button {
	width: 50px;
	height: 50px;
	position: fixed;
	right: 15px;
	bottom: 15px;
	display: flex;
	justify-content: center;
	align-items: center;
	background-color: var(--primary-text-color);
	color: var(--secondary-background-color);
	border: none;
	border-radius: 50%;
	z-index: 100;
}

#theme-color-button .icon {
	width: 20px;
	height: 20px;
}

body > header {
	margin-bottom: 15px;
	width: 100%;
	height: 40px;
	display: flex;
	justify-content: center;
	align-items: center;
	background-color: var(--primary-accent-color);
	color: var(--primary-text-color);
	transition: var(--color-transition);
}

body > header h1 {
	font-size: 1.5em;
}

main {
	padding: 0 15px;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	gap: 15px;
}

#calendar-container {
	width: 100%;
	max-width: 1500px;
	height: fit-content;
	background-color: var(--primary-background-color);
	color: var(--primary-text-color);
	border-radius: 0.625rem;
}

#calendar-container header {
	padding: 1.5625rem 1.875rem 0.625rem;
	display: flex;
	justify-content: space-between;
	align-items: center;
}

#calendar-container header .current-date {
	font-size: 1.5rem;
	font-weight: 500;
}

#calendar-container header .button-container {
	display: flex;
	gap: 15px;
}

#calendar-container header button {
	font-size: 2rem;
	width: 40px;
	height: 40px;
	display: flex;
	justify-content: center;
	align-items: center;
	background-color: transparent;
	color: var(--primary-text-color);
	border: none;
	border-radius: 50%;
	user-select: none;
	transition: var(--color-transition);
}

#calendar-container header .button-container button:active {
	color: var(--primary-background-color);
	background-color: var(--primary-text-color);
}

#calendar-container .calendar {
	padding: 1.25rem;
}

#calendar-container .calendar ul {
	text-align: center;
	display: flex;
	flex-wrap: wrap;
	list-style: none;
}

#calendar-container .calendar li {
	font-size: 1rem;
	width: calc(100% / 7);
	color: var(--primary-text-color);
	user-select: none;
}

#calendar-container .calendar .weeks li {
	font-weight: 700;
	cursor: default;
}

#calendar-container .calendar .days {
	margin-bottom: 1.25rem;
}

#calendar-container .calendar .days li {
	margin-top: 1.875rem;
	position: relative;
	z-index: 3;
	transition: all 0.3s ease-in-out;
}

#calendar-container .calendar .days li.inactive {
	color: var(--secondary-text-color);
}

#calendar-container .calendar .days li.active {
	color: var(--primary-background-color);
}

#calendar-container .calendar .days li::before {
	content: '';
	width: 2.5rem;
	height: 2.5rem;
	position: absolute;
	top: 50%;
	left: 50%;
	border-radius: 50%;
	transition: all 0.3s ease-in-out;
	transform: translate(-50%, -50%);
	z-index: -1;
}

#calendar-container .calendar .days li.active::before {
	background-color: var(--primary-accent-color);
}

#calendar-container .calendar .days li:not(.active):active {
	color: var(--primary-background-color);
}

#calendar-container .calendar .days li:not(.active):active::before {
	background-color: var(--primary-text-color);
}