@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300&display=swap');

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	font-family: 'Roboto', sans-serif;
}

:root {
	--clr: #222327;
}

body {
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	background: var(--clr);
}

.navigation {
	position: relative;
	width: 400px;
	height: 70px;
	background: #fff;
	display: flex;
	justify-content: center;
	align-items: center;
	border-radius: 10px;
}

.navigation ul {
	display: flex;
	width: 350px;
}

.navigation ul li {
	position: relative;
	list-style: none;
	width: 70px;
	height: 70px;
	z-index: 1;
}

.navigation ul li a {
	position: relative;
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	width: 100%;
	text-align: center;
	font-weight: 500;
}

.navigation ul li a .icon {
	position: relative;
	display: block;
	line-height: 75px;
	font-size: 1.5em;
	text-align: center;
	transition: 0.5s;
	color: var(--clr);
}

.navigation ul li.active a .icon {
	transform: translateY(-32px);
}

.navigation ul li a .text {
	position: absolute;
	color: var(--clr);
	font-weight: 400;
	font-size: 0.75em;
	letter-spacing: 0.05em;
	transition: 0.5s;
	opacity: 0;
	transform: translateY(20px);
}

.navigation ul li.active a .text {
	opacity: 1;
	transform: translateY(10px);
}

.indicator {
	position: absolute;
	top: -50%;
	width: 70px;
	height: 70px;
	background: #29fd53;
	border-radius: 50%;
	border: 6px solid var(--clr);
	transition: 0.5s;
}

.indicator::before {
	content: ""; 
	position: absolute;
	top: 50%;
	left: -22px;
	width: 20px;
	height: 20px;
	background: transparent;
	border-top-right-radius: 20px;
	box-shadow: 1px -10px 0 0 var(--clr);
}

.indicator::after {
	content: ""; 
	position: absolute;
	top: 50%;
	right: -22px;
	width: 20px;
	height: 20px;
	background: transparent;
	border-top-left-radius: 20px;
	box-shadow: -1px -10px 0 0 var(--clr);
}

.navigation ul li:nth-child(1).active ~ .indicator {
	transform: translateX(calc(70px * 0));
}

.navigation ul li:nth-child(2).active ~ .indicator {
	transform: translateX(calc(70px * 1));
}

.navigation ul li:nth-child(3).active ~ .indicator {
	transform: translateX(calc(70px * 2));
}

.navigation ul li:nth-child(4).active ~ .indicator {
	transform: translateX(calc(70px * 3));
}

.navigation ul li:nth-child(5).active ~ .indicator {
	transform: translateX(calc(70px * 4));
}