html,
body {
	position: fixed;
	top: 0px;
	left: 0px;
	height: 100%;
	width: 100%;
	/* background: #141e6e; */
	background: radial-gradient(at center, rgb(22, 37, 87), #08162E);
}

canvas {
	display: block;
	vertical-align: bottom;
}

#particles-js {
	width: 100%;
	height: 100%;
	background-size: cover;
	background-position: 50% 50%;
	background-repeat: no-repeat;
	width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	left: 0;
}

/* 去除默认样式 */
* {
	margin: 0;
	padding: 0;
	font-size: 黑体;
	box-sizing: border-box;
}

/* 内容居中 底色 */
body {
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
}

/* 整体登陆盒子 */
.box {
	position: relative;
	width: 380px;
	height: 420px;
	background: rgba(0,0,0,0.5);
	border-radius: 8px;
	overflow: hidden;
}

/* 流光 */
.box::before {
	content: "";
	position: absolute;
	top: -50%;
	left: -50%;
	width: 380px;
	height: 420px;
	background: linear-gradient(0deg, transparent, transparent, #45f3ff, #0f2b59, #45f3ff);
	z-index: 1;
	transform-origin: bottom right;
	animation: animate 6s linear infinite;
}

/* 流光 */
.box::after {
	content: "";
	position: absolute;
	top: -50%;
	left: -50%;
	width: 380px;
	height: 420px;
	background: linear-gradient(0deg, transparent, transparent, #45f3ff, #45f3ff, #45f3ff);
	z-index: 1;
	transform-origin: bottom right;
	animation: animate 6s linear infinite;
	animation-delay: -3s;
}

/* 额外流光盒子 */
.borderLine {
	position: absolute;
	top: 0;
	inset: 0;
}

/* 流光 */
.borderLine::before {
	content: "";
	position: absolute;
	top: -50%;
	left: -50%;
	width: 380px;
	height: 420px;
	background: linear-gradient(0deg, transparent, transparent, #7046c3, #b041ff, #89ffb1);
	z-index: 1;
	transform-origin: bottom right;
	animation: animate 6s linear infinite;
	animation-delay: -1.5s;
}

/* 流光 */
.borderLine::after {
	content: "";
	position: absolute;
	top: -50%;
	left: -50%;
	width: 380px;
	height: 420px;
	background: linear-gradient(0deg, transparent, transparent, #59afd3, #ff9886, #734337);
	z-index: 1;
	transform-origin: bottom right;
	animation: animate 6s linear infinite;
	animation-delay: -4.5s;
}

/* 动画 */
@keyframes animate {
	0% {
		transform: rotate(0deg);
	}

	100% {
		transform: rotate(360deg);
	}
}

/* 登录form表单 */
.box form {
	position: absolute;
	inset: 4px;
	background: rgba(20, 36, 48, 1.0);
	padding: 50px 40px;
	border-radius: 8px;
	z-index: 2;
	display: flex;
	flex-direction: column;
}

/* 标题 */
.box form h2 {
	color: #fff;
	font-weight: 500;
	text-align: center;
	letter-spacing: 0.1em;
}

/* 输入框盒子 */
.box form .inputBox {
	position: relative;
	width: 300px;
	margin-top: 35px;
}

/* 输入框 */
.box form .inputBox input {
	position: relative;
	width: 100%;
	padding: 20px 10px 10px;
	background: transparent;
	outline: none;
	border: none;
	box-shadow: none;
	color: #23242a;
	font-size: 1em;
	letter-spacing: 0.05em;
	transition: 0.5s;
	z-index: 10
}

/* username和passward文字样式 */
.box form .inputBox span {
	position: absolute;
	left: 0;
	padding: 20px 0px 10px;
	pointer-events: none;
	color: #8f8f8f;
	font-size: 1em;
	letter-spacing: 0.05em;
	transition: 0.5s;
}

/* 有效输入和获取焦点时 span上移 文字减小 */
.box form .inputBox input:valid~span,
.box form .inputBox input:focus~span {
	color: #fff;
	font-size: 0.75em;
	transform: translateY(-34px);
}

/* 白色横线 */
.box form .inputBox i {
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	height: 2px;
	background: #fff;
	border-radius: 4px;
	overflow: hidden;
	transition: 0.5s;
	pointer-events: none;
}

/* 有效输入和获取焦点时  横线变高 */
.box form .inputBox input:valid~i,
.box form .inputBox input:focus~i {
	height: 44px;
}

/* 忘记密码和注册盒子 */
.box form .links {
	display: flex;
	justify-content: space-between;
}

/* a链接 */
.box form .links a {
	margin: 10px 0;
	font-size: 0.75em;
	color: #8f8f8f;
	text-decoration: none;
}

/* hover时忘记密码变白  注册直接白色 */
.box form .links a:hover,
.box form .links a:nth-child(2) {
	color: #fff;
}

/* 登录按钮样式 */
.box form input[type="submit"] {
	border: none;
	outline: none;
	padding: 9px 25px;
	background: #fff;
	cursor: pointer;
	font-size: 0.9em;
	border-radius: 4px;
	font-weight: 600;
	width: 100px;
	margin-top: 10px;
}

/* 鼠标按下时 登录按钮整体透明80% */
.box form input[type="submit"]:active {
	opacity: 0.8;
}