html, body {
	height: 100%;
	margin: 0;
}

body {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
	font-family: "Noto Sans", sans-serif;
	font-optical-sizing: auto;
	font-weight: 400;
	font-style: normal;
	font-variation-settings:
		"wdth" 100;

	text-align: center;
	color: var(--contraste);
}

:root {
	--orange: #E07D19;
	--fond: white;
	--contraste: black;
}

article {
	margin: 0 auto;
	padding: 1rem;
}

h1 {
	color: var(--orange);
	font-size: 2rem;
	margin-top: 0.5rem;
	margin-bottom: 0.5rem;
}

header {
	padding: 1rem 0 0;
	position: sticky;
	top: 0;
	z-index: 10;
	background: rgba(255, 255, 255, 0.5);
	backdrop-filter: blur(4px);
}

nav {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 0.5rem;
	padding: 0.5rem 1rem 0.75rem;
}

nav a {
	color: var(--orange);
	text-decoration: none;
	font-weight: 700;
	font-size: 0.92rem;
	padding: 0.6rem 0.9rem;
	border: 1.5px solid var(--orange);
	border-radius: 999px;
	transition: all 0.2s ease;
	background: rgba(224, 125, 25, 0.04);
}

nav a:hover,
nav a:focus-visible {
	background: var(--orange);
	color: var(--fond);
	text-decoration: none;
	transform: translateY(-1px);
	padding: 0.6rem 2rem;
}

#section-etapes {
	max-width: 42rem;
	margin: 2rem auto 0;
	padding: 1.25rem 1rem;
	border: 2px solid rgba(224, 125, 25, 0.25);
	border-radius: 1rem;
	background: rgba(224, 125, 25, 0.04);
	text-align: left;
	align-self: center;
}

#section-etapes h2 {
	color: var(--orange);
	font-size: 1.4rem;
	margin: 0 0 0.75rem;
}

#section-etapes p,
#section-etapes li {
	font-size: 1rem;
	line-height: 1.6;
	margin: 0 0 0.75rem;
}

#section-etapes ol {
	margin: 0.75rem 0 1rem 1.25rem;
	padding-left: 1rem;
}

#section-etapes li {
	margin-bottom: 0.5rem;
}

#section-etapes li::marker {
	color: var(--orange);
	font-weight: 800;
}

p {
	font-size: 1rem;
	margin-bottom: 1.5rem;
}

.div-info {
	display: flex;
	flex-direction: column;
	margin: 1rem auto;
	text-align: left;
	max-width: 20rem;
	gap: 0.1rem;
}
b {
	font-weight: 550;
}

label {
	font-size: 0.9rem;
	margin-left: 0.5rem;
}
.info {
    font-size: 1rem;
    border: 2px solid var(--orange);
    border-radius: 0.5rem;
    padding: 0.6rem;
    outline: none;
	color: var(--contraste);
	background-color: var(--fond);
	font-family: inherit;
}

#btnCalculer {
	background-color: var(--orange);
	color: var(--fond);
	padding: 0.8rem 1.1rem;
	border-radius: 10rem;
	border: none;
	transition: all 0.2s ease-in-out;
	font-size: 1rem;
	font-family: inherit;
	cursor: pointer;
}

#btnCalculer:hover,
#btnCalculer:focus-visible {
	background-color: var(--fond);
	color: var(--orange);
	padding: 0.8rem 2rem;
	font-weight: 700;
	box-shadow: 0px 0px 15px rgba(224, 125, 25, 0.55);
}

main {
	flex: 1;
}

footer {
	margin: 3rem auto 0 auto;
	padding: 1rem;
	background-color: var(--orange);
	color: var(--fond);
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.5rem;
	width: 100%;
	box-sizing: border-box;
}

@media (max-width: 480px) {
	nav {
		gap: 0.4rem;
		padding-inline: 0.5rem;
	}

	nav a {
		font-size: 0.82rem;
		padding: 0.5rem 0.7rem;
	}

	#section-etapes {
		padding: 1rem 0.9rem;
	}

	#section-etapes h2 {
		font-size: 1.2rem;
	}

	#btnCalculer {
		width: 100%;
		max-width: 20rem;
	}
}