body {
	display: flex;
	justify-content: center;
	align-items: center;
}

.container {
	padding: 15px;
	width: 95%;
	max-width: 500px;
	text-align: center;
	background-color: var(--primary-background-color);
	border: 1.5px solid var(--primary-accent-color);
	border-radius: 10px;
	box-shadow: 0 4px 12px var(--primary-transparent-color);
}

.container h1 {
	color: var(--primary-text-color);
}

.input-field {
	width: 100%;
	position: relative;
	display: flex;
	justify-content: center;
	align-items: center;
}

.input-field .text {
	position: absolute;
	top: 7px;
	z-index: 100;
	color: var(--primary-text-color);
}

#date-of-birth {
	margin-bottom: 12px;
	padding: 8px;
	font-size: 14px;
	width: 100%;
	border: 1px solid #CCC;
	border-radius: 6px;
}

#date-of-birth:valid + .text {
	display: none;
}

.datetime-display {
	width: 100%;
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	align-items: center;
	gap: 15px;
}

.datetime-display .date-group,
.datetime-display .time-group {
	width: 100%;
}

.datetime-display .title {
	font-size: 1.5rem;
	font-weight: bold;
	text-transform: uppercase;
}

.datetime-display .list {
	width: 100%;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 10px;
	list-style-type: none;
}

.datetime-display .list li {
	padding: 10px;
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	align-items: center;
	flex-grow: 1;
	gap: 5px;
	border: 1.5px solid var(--primary-text-color);
	border-radius: 4px;
}

#theme-color-button {
	width: 50px;
	height: 50px;
	position: fixed;
	bottom: 15px;
	right: 15px;
	z-index: 100;
	display: flex;
	justify-content: center;
	align-items: center;
	background-color: var(--primary-text-color);
	color: var(--primary-background-color);
	border-radius: 50%;
}

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

@media screen and (max-width: 400px) {
	.container {
		padding: 10px;
	}
	
	.container h1 {
		font-size: 1em;
	}

	.datetime-display .title {
		font-size: 1em;
	}

	.datetime-display .list li {
		padding: 5px;
	}
	
	.datetime-display .list strong {
		font-size: 0.75em;
	}
}