*::before,
*::after,
* {
	margin: 0;
	padding: 0;
	box-sizing: inherit;
}

html {
	box-sizing: border-box;
	font-size: 62.5%;
}

body {
	display: flex;
	flex-direction: column;
	justify-content: space-evenly;
	align-items: center;
	min-height: 90vh;
	font-family: 'Poppins', sans-serif;
	background-color: #1e2140;
	color: white;

	.main-heading {
		font-size: 3.2rem;
		font-weight: 500;
	}

	main {
		width: 40rem;
		height: 40rem;
		border-radius: 50%;
		text-align: center;
	}

	.modes {
		font-size: 1.8rem;
		padding: 1.6rem 1rem;
		background: #151932;
		border-radius: 10rem;

		a {
			margin-right: 2em;
			text-decoration: none;
			font-weight: 500;
			color: #484c67;
			transition: all 300ms ease-out;

			&.active {
				padding: 0.5em 1em;
				border-radius: 50px;
				background-color: #fa6f71;
				color: #1c2244;
			}

			&:last-child { margin-right: 0; }
		}
  }
  
  .get-started {
    background: royalblue;
    padding: 1.2rem 2rem;
    border-radius: 0.4rem;
    font-size: 1.8rem;
    margin-top: 2rem;
  }

	.pomodoro {
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		width: 100%;
		height: 100%;
		position: relative;
		margin: 2.5rem 0;
		text-align: center;
		border-radius: 50%;
		background: #151932;
		box-shadow: 50px 50px 82px #0e1021, -50px -50px 82px #1c2244;

		&::before {
			content: '';
			position: absolute;
			border: 10px solid royalblue;
			border-radius: 50%;
			width: 35rem;
			height: 35rem;
		}

		&__time {
			font-size: 7rem;
			font-weight: 500;
		}

		&__state {
			font-size: 2rem;
			margin-top: 1em;
			padding-left: 1em;
			letter-spacing: 1em;
			text-transform: uppercase;
		}
	}
}

.tooltip-container {
	position: fixed;
	bottom: 2.5rem;
	right: 5.5rem;
}

.help__tooltip {
	position: relative;
	padding: 0.8rem;
	background: rgba(65, 105, 225, 0.7);
	border-radius: 50%;
	text-align: center;

	&:hover .help__tooltip-content {
		opacity: 1;
		visibility: visible;
	}

	&-content {
		opacity: 0;
		visibility: hidden;
		width: 15rem;
		position: absolute;
		bottom: 150%;
		left: 30%;
		background-color: #151932;
		font-size: 1.4rem;
		color: #fff;
		text-align: center;
		border-radius: 6px;
		padding: 1rem;
		margin-left: -6.5rem;
		z-index: 1;
		transition: visibility 200ms, opacity 200ms ease-in-out;

		h4 { margin-bottom: 0.8rem; }

		ul {
			list-style: none;

			li:nth-child(even) { margin-bottom: 0.8rem; }
		}

		&::after {
			content: '';
			position: absolute;
			top: 100%;
			left: 50%;
			margin-left: -10px;
			border-width: 10px;
			border-style: solid;
			border-color: #151932 transparent transparent transparent;
		}
	}

	img {
		opacity: 0.6;
		cursor: pointer;
	}
}

@media screen and (min-width: 320px) and (max-width: 480px) {
	main { transform: scale(0.8); }
	
	body .modes { font-size: 1.5rem; }
}