body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #111;
}

header {
    background-color: #404866;
    padding: 10px 20px;
    border-bottom-left-radius: 30px;
    border-bottom-right-radius: 30px;
    z-index: 10 ;
    position: relative;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
}

.logo {
    height: 120px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline-block;
    margin-left: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 30px;
    margin-top: -20px;  /* remonte le contenu */
    position: relative;
    z-index: 0;
}

.tabs {
    display: flex;
    justify-content: center;  /* Centre les boutons */
    flex-wrap: wrap;          /* Permet le retour à la ligne si besoin */
    gap: 10px;                /* Espace entre les boutons */
    margin-bottom: 20px;
}

.tab-button {
    padding: 10px 15px;
    margin-right: 5px;
    border: none;
    cursor: pointer;
    background: #e0e0e0;
    color: #000;
    border-radius: 5px;
	transition: background-color 0.3s ease, color 0.3s ease;
	font-size: 1rem;
	font-weight: none;
	font-family: 'Roboto', sans-serif;
}

.tab-button.active {
    background-color: #bfa77a; /* Dorée */
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-button:hover {
    background-color: #bfa77a;  /* Dorée */
    color: #fff;                /* Texte blanc */
}

.download-btn {
    display: block;
	width: fit-content;
    background: #485169;
    color: white;
    padding: 10px 20px;
    margin: 15px 0;
    text-decoration: none;
    border-radius: 5px;
}

.download-btn:hover {
	--background-color: #bfa77a;   /* Dorée */
    color: #bfa77a;                /* Texte blanc */
}

.groupe-boutons {
  display: flex;
  justify-content: center;  /* centre le groupe */
  gap: 20px;                 /* espace entre les boutons */
  margin: 30px 0;
  flex-wrap: wrap;
}

footer {
    background-color: #999;
    text-align: center;
    padding: 15px;
    margin-top: 50px;
}

.bloc-plein {
    width: 96%;
    margin: 20px 0;
    background: #f8f8f8;
    padding: 20px;
    border-radius: 6px;
}

.bloc-double {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    --margin: 20px 0;
    padding: 20px;
    border-radius: 6px;
    background-color: #ffffff; /* le fond commun */
}

.bloc-double .colonne {
    padding: 10px;
    border: 1px solid #f8f8f8;
    border-radius: 6px;
    background-color: #f8f8f8;
	min-width: calc(48% - 10px)
}

h2 {
    color: #485169;
}

h1 {
    text-align: center;
    font-size: 2.2em;
    margin-bottom: 30px;
}

.page-excel h1 {
    color: #7ddd69;
}
.page-PowerBI h1 {
    color: #c9850e;
}
.page-Netvie h1 {
    color: #7b0087;
}

.bande {
  padding: 60px 20px;
}

.bande-jaune {
  background-color: #ffe9c3;
  width: 100vw;
  position: relative;
  margin-top: -30px; /* passe sous le header */
  padding: 80px 20px 60px;
  z-index: 1;
}

.bande-jaune .contenu {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}


.bande-blanche {
  background-color: #ffffff;
}

.contenu {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.domaines {
  list-style: none;
  padding: 0;
  font-size: 1.1em;
  line-height: 2em;
}

.bande:first-of-type {
  margin-top: 0;
}

.image-accueil {
  max-width: 50%;
  height: auto;
  border-radius: 12px;
  margin: 20px auto;
  display: block;
}

.contenu-double {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  text-align: left;
}

.col-gauche, .col-droite {
  flex: 1 1 400px;
}

.image-colonne {
  width: 100%;
  max-width: 480px;
  border-radius: 12px;
  display: block;
}