body {
  margin: 0;
  font-family: Arial, sans-serif;
}





/*bandeau de menu*/
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background-color: #3050ff;
}

.logo {
  height: 50px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav ul li a {
  text-decoration: none;
  color: #ffffff;
  font-weight: bold;
}

nav ul li a:hover {
  color: #f4409f;
}
nav ul li.menu-parent {
  position: relative;
}

/* Ajouter flèche sous-menu */
nav ul li.menu-parent > a::after {
  content: " ▼"; 
  font-size: 0.7em;
  margin-left: 5px;
  transition: transform 0.3s ease;
}

/* Faire tourner la flèche sous-menu */
nav ul li.menu-parent:hover > a::after {
  transform: rotate(180deg);
}

/* Sous-menu caché */
nav ul li .sous-menu {
  position: absolute;
  top: 100%; 
  left: 0;
  background-color: #3050ff;
  list-style: none;
  padding: 0;
  margin: 0;
  min-width: 180px;
  display: none; 
  z-index: 100;
  border-radius: 10px; 
  overflow: hidden;   
}

/* Liens du sous-menu */
nav ul li .sous-menu li a {
  display: block;
  padding: 10px 20px;
  color: #ffffff;
  text-decoration: none;
}

nav ul li .sous-menu li a:hover {
  background-color: #3050ff;
  color: #f4409f;
}

/* Afficher le sous-menu au hover */
nav ul li.menu-parent:hover .sous-menu {
  display: block;
}







main {
  padding: 20px;
  background-color: #f4409f;
}

#chart_div {
  border-radius: 20px;
  overflow: hidden; 
}



main h1, h2, h6 {
  color: #3050ff; 
}

h2, h6 {
  margin: 0; 
  padding: 0; 
}

main h1 {
  color: #3050ff;
  font-size: 2.5em;
  text-align: center;
  margin-bottom: 20px;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}

#source {
  font-size: 12px;
  color: #f6d3e8;
  font-style: italic;
  text-align: center;
  margin-top: 5px;
}





/*tableau graphique stricte*/
#donnees_tab {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  font-family: Arial, sans-serif;
  font-size: 14px;
}

#donnees_tab th, #donnees_tab td {
  border: 1px solid #3050ff;
  padding: 8px;
  text-align: center;
}

#donnees_tab th {
  background-color: #3050ff;
  color: white;
}

#donnees_tab tbody tr:nth-child(even) {
  background-color: #f1d0e2;
}

#donnees_tab tbody tr:hover {
  background-color: #f6d3e8; 
}







/* Graphique Hybride*/
/* Centrer */
#chart-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;   
  justify-content: center;
  margin-top: 20px;
}

/* Centrer le SVG */
#chart {
  display: block;
  margin: 0 auto;
  overflow: visible;

}

#tooltip {
  position: absolute;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 5px 10px;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  font-family: Arial, sans-serif;
  font-size: 14px;
}

#legend {
  width: 100%;
  margin-top: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  font-family: Arial, sans-serif;
  font-size: 15px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.legend-item img {
  width: 40px;   
  height: auto;
}

#chart-container {
  border-radius: 20px;
  overflow: hidden; 
  background-color: #ffffff;
  padding: 10px;
}







/*graphiques sur les pages des graphiques ia */
#graphiqueia {
  background-color: #ffffff;
}
/*explications sur les pages des graphiques ia */
#explicationia{
  color : #3050ff;
}






/*index.html*/
#intro-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 50px 20px;
  text-align: center;
}

#intro-logo {
  height: 150px;
  border-radius: 15px;
}

#intro-text h1 {
  color: #3050ff;
  font-size: 3em;
  margin: 0 0 15px 0;
  text-shadow: 2px 2px 5px rgba(0,0,0,0.3);
}

#intro-paragraph {
  background-color: rgba(48, 80, 255, 0.1); 
  color: #3050ff;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  line-height: 1.8;
  max-width: 900px;
  margin: 0 auto 40px auto;
  text-align: left;
}

#intro-paragraph p {
  margin: 0 0 15px 0;
  font-size: 1.5em;
  color: #3050ff;

}

#intro-paragraph ul {
  margin: 0;
  padding-left: 20px;
  list-style-type: disc;
  font-size: 1.5em;
  
}

#intro-paragraph ul li {
  margin-bottom: 10px;
  
}

#intro-paragraph ul li a {
  color: #3050ff;
  text-decoration: underline;
}

#intro-paragraph ul li a:hover {
  color: #ffffff;
}








main p:not(.prompt-text) {
  max-width: 900px; 
  margin: 0 auto 40px auto; 
  line-height: 1.8; 
  font-size: 1.1em;
  color: #ffffff;
  background-color: rgba(48, 80, 255, 0.1); 
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1); 
}


p.prompt-text {
  font-size: 1rem;
  line-height: 1.4;
  color: #000000; 
  padding: 0.5em 0;
  margin-bottom: 0.8em;
  background-color: transparent; /* important pour enlever le background hérité */
}

.bloc-fond {
  max-width: 900px;
  margin: 40px auto;
  padding: 30px;
  background-color: rgba(48, 80, 255, 0.1);
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.bloc-fond h2, 
.bloc-fond h6 {
  color: #3050ff;
  margin-top: 20px;
}

.bloc-fond .prompt-text {
  color: #ffffff;
  background-color: transparent;
  line-height: 1.6;
  margin-bottom: 10px;
}




/* graphique créatif image ia*/
.graphia {
  display: block;
  margin: 0 auto;   
  width:67%;       
}



/*vidéo*/
.ma-video {
  display: block;
  margin: 20px auto;
  width: 60%;       
  max-width: 700px;  
  border-radius: 10px; 
}


/*index*/
#signification-section {
  width: 80%;
  margin: 50px auto;
  text-align: center;
}

.signification-text {
  background: #3050ff;
  padding: 20px 30px;
  border-radius: 15px;
  width: 80%;
  margin: 40px auto 0 auto; 
  font-size: 1.1rem;
}