:root {
	--bg-color: #f8f8f8;
	--text-color: #000000;
	--size: 8em;
	--range: 7;
	--transmid: calc((var(--range) - 1) * 50%);
}

/* dark theme */
[data-theme="dark"] {
	--bg-color: #000000;
	--text-color: #eeddcc;
}


b,
strong {
	font-variation-settings: 'wght' 850;
}

body {
	margin: 0;
	min-height: 100vh;
	display: flex;
	justify-content: center;
	/* 水平居中 */
	align-items: center;
	/* 垂直居中 */
	background-color: var(--bg-color);
	color: var(--text-color);
}

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

.clock-unit {
	height: calc(var(--size) * var(--range));
	/* 2个数字的高度 */
	overflow: hidden;
	position: relative;
	margin: 0 5px;
}

.digit {
	font-size: var(--size);
	font-family: 'Recursive';
	line-height: 1em;
	transform: translateY(0);
}

.gradient-top,
.gradient-bottom {
	content: '';
	position: absolute;
	left: 0;
	right: 0;
	height: 40%;
	/* 渐变的高度 */
	pointer-events: none;
	/* 确保它不影响其他事件 */
	bottom: 0;
	background: linear-gradient(to top, var(--bg-color), transparent);
}

.gradient-bottom {
	top: 0;
	bottom: auto;
	background: linear-gradient(to bottom, var(--bg-color), transparent);
}


.theme-toggler {
	position: fixed;
	z-index: 100;
	top: 20px;
	right: 20px;
	cursor: pointer;
	padding: 10px;
	border-radius: 50%;
	background-color: white;
	box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
	transition: background-color 0.3s ease;
}

#theme-toggler {
	outline: none;
	-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}


[data-theme="dark"] .theme-toggler {
	background-color: #333;
}

.theme-toggler i {
	font-size: 24px;
	color: #333;
}

[data-theme="dark"] .theme-toggler i {
	color: white;
}