* {
	margin: 0;
	padding: 0;
}

body { 
	font-family: Tahoma, sans-serif;
	font-size: 20px;
	background-color: white;
}

p {
	color: #333;
}

li {
	color: #333;
}

header {
	background-color: #f4f6f9;
	padding: 20px 0;
	border-bottom: 1px solid #d1d5db;
	position: relative;
}

nav ul {
	list-style-type: none;
	display: flex;
	justify-content: center;
	gap: 40px;
}

nav a {
	text-decoration: none;
	color: #333;
	font-weight: bold;
	font-size: 18px;
}

nav a:hover {
	color: #0078d4;
}

.hero {
	text-align: center;
	padding: 50px 20px;
	background-size: cover;
	background-position: center;
	background-repeat: no-repeat;
	color: white;
	text-shadow: 1px 1px 4px rgba(9,9,9,9.7);
}

.hero h1 {
	font-size: 42px;
	margin-bottom: 20px;
	color: white;
	font-weight: bold;
	font-style: italic;
}

.hero p {
	margin-bottom: 40px;
	color: whitesmoke;
	font-style: italic;
	text-decoration: underline;
}

.btn-principal {
	display: inline-block;
	background-color: #0078d4;
	color: white;
	padding: 15px 30px;
	border-radius: 5px;
	text-decoration: none;
	font-weight: bold;
}

.btn-principal:hover {
	background-color: #005a9e;
}

footer {
	text-align: center;
	padding: 30px 20px;
	background-color: #f4f6f9;
	border-top: 1px solid #d1d5db;
	margin-top: 50px;
}

.mention-legale {
	font-size: 12px;
	color: #666;
	margin-top: 10px;
}

.entete-page {
	text-align: center;
	padding: 40px 20px 10px 20px;
}

.entete-page p {
	text-decoration: underline;
	margin-bottom: 25px;
}

.alerte-prerequis {
	background-color: #fff3cd;
	color: #856404;
	border-left: 5px solid #ffeeba;
	padding: 15px 20px;
	max-width: 800px;
	margin: 20px auto 40px auto;
	border-radius: 4px;
	text-align: left;
	text-decoration: underline;
}

.tutoriel-etapes {
	max-width: 1000px;
	margin: 0px auto;
	padding: 0 20px;
}

.etape {
	display: flex;
	align-items: center;
	gap: 40px;
	margin-bottom: 60px;
}

.etape:nth-child(even) {
	flex-direction: row-reverse;
}

.etape-texte, .etape-image {
	flex: 1;
}

.etape-image img {
	width: 80%;
	max-width: 450px;
	height: auto;
	display: block;
	margin: 0 auto;
	border-radius: 8px;
	box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.grille-gabarits {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: 30px;
	padding: 20px;
	max-width: 1200px;
	margin: 0 auto;
}

.carte-modele {
	background-color: lightgoldenrodyellow;
	border: 1px solid #e1e4e8;
	border-radius: 8px;
	padding: 30px;
	width: 320px;
	box-shadow: 0 4px 6px rgba(0,0,0,0.05);
	transition: transform 0.3s ease, box-shadow 0.3s ease;
	display: flex;
	flex-direction: column;
}

.carte-modele:hover {
	transform: translateY(-5px);
	box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.carte-modele h3 {
	color: black;
	margin-bottom: 20px;
	text-align: center;
	font-size: 22px;
}

.caracteristiques {
	margin-bottom: 20px;
	padding-left: 20px;
	flex-grow: 1;
}

.caracteristiques li {
	margin-bottom: 10px;
	font-size: 16px;
	color: #555;
}

.prix-modele {
	font-size: 28px;
	font-weight: bold;
	text-align: center;
	margin-bottom: 20px;
	color: #333;
}

.carte-modele .btn-principal {
	text-align: center;
	display: block;
}

.section-contact {
	display: flex;
	gap: 40px;
	max-width: 1000px;
	margin: 0 auto 60px auto;
	padding: 0 20px;
}

.a-propos, .coordonnees {
	flex: 1;
	background-color: white;
	padding: 40px;
	border-radius: 8px;
	border: 1px solid #e1e4e8;
	box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.a-propos h2, .coordonnees h2 {
	color: #0078d4;
	margin-bottom: 20px;
	font-size: 24px;
	border-bottom: 2px solid #f4f6f9;
	padding-bottom: 10px;
}

.section-contact p {
	line-height: 1.6;
	color: #555;
	margin-bottom: 20px;
}

.vitrine-image {
    max-width: 900px; 
    margin: -20px auto 60px auto; 
    padding: 0 20px;
}

.conteneur-diapo {
    background-color: white;
    border: 1px solid #e1e4e8;
    border-radius: 8px; 
    padding: 15px; 
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08); 
}

.conteneur-diapo img {
    width: 100%; 
    height: auto; 
    border-radius: 4px; 
    display: block;
}

.legende-image {
    background-color: #f4f6f9;
    margin-top: 15px;
    padding: 12px;
    border-radius: 4px;
    text-align: center;
    font-size: 15px;
    color: #444;
    font-weight: 500;
}

.public-cible {
	background-color: lightgoldenrodyellow; 
    color: blue; 
    font-size: 0.85em; 
    font-weight: bold; 
    padding: 5px 12px; 
    border-radius: 20px; 
    display: inline-block; 
    margin-bottom: 15px;
}

.prix-modele1 {
	margin-bottom: 10px;
	font-size: 16px;
	color: black;
	font-weight: bold;
	text-align: center;
	text-decoration: underline;
}

.galerie-gabarits {
    display: flex;
    justify-content: space-around; 
    gap: 20px; 
    margin: 40px 0; 
    flex-wrap: wrap; 
}

.carte-visuel {
    text-align: center;
    flex: 1; 
    min-width: 250px; 
}

.image-modele {
    width: 75%; 
    border-radius: 8px; 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15); 
    border: 1px solid #e0e0e0; 
    margin: 0 auto 15px auto;
	display: block;
}

.carte-visuel h4 {
    color: blue; 
    margin: 0;
	text-decoration: underline;
}

.phrase-conclusion {
	font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
	text-decoration: underline;
	text-underline-offset: 4px;
	font-style: italic;
	color: #444444;
	font-weight: 500;
	text-align: center;
	margin-top: 30px;
}

.logo-entete {
	position: absolute;
	left: 20px;
	top: 50%;
	transform: translateY(-50%);
	width: 70px;
	height: 70px;
	mix-blend-mode: multiply;
	clip-path: inset(2px);
}

.en-tete-rouge {
	background-color: #ffb3b3 !important;
}

@media screen and (max-width: 768px) {
	nav ul {
		flex-direction: column;
		gap: 15px;
		padding: 0;
	}

	header {
		padding: 10px 0;
	}

	.grille-gabarits, .galerie-gabarits {
		flex-direction: column;
		align-items: center;
	}

	h1 {
		font-size: 24px;
	}

	.entete-page {
		padding: 20px 10px;
	}
}