/* style.css */

/* --- Reset et Base --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f8;
    color: #333;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- En-tête (Header) --- */
header {
    background-color: #00558C; /* Bleu Grand Est */
    color: white;
    padding: 20px 40px;
    border-bottom: 5px solid #FFCC00; /* Jaune Grand Est */
}

header h1 {
    font-size: 2.2rem;
    font-weight: bold;
}

header h2 {
    font-size: 1.2rem;
    font-weight: normal;
    opacity: 0.9;
    margin-top: 5px;
}

/* --- Conteneur Principal (Flexbox) --- */
.container {
    display: flex;
    flex-wrap: nowrap;
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
    flex: 1; /* Pousse le footer vers le bas */
    gap: 30px;
}

/* --- Contenu Principal (Gauche) --- */
main {
    flex: 3; /* Prend 75% de la largeur */
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

main h2 {
    color: #00558C;
    border-bottom: 2px solid #FFCC00;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

main h3 {
    color: #444;
    margin-top: 20px;
    margin-bottom: 10px;
}

main ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.chiffre-cle {
    background-color: #eef6fb;
    border-left: 5px solid #00558C;
    padding: 15px;
    margin: 20px 0;
    font-weight: bold;
}

/* --- Navigation (Droite) --- */
aside {
    flex: 1; /* Prend 25% de la largeur */
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    height: fit-content; /* S'arrête à la fin du contenu */
}

aside h3 {
    color: #00558C;
    margin-bottom: 15px;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

nav ul li {
    margin-bottom: 10px;
}

nav ul li a {
    display: block;
    text-decoration: none;
    color: #333;
    background-color: #f4f4f4;
    padding: 12px 15px;
    border-radius: 4px;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

nav ul li a:hover {
    background-color: #e0e0e0;
    border-left: 4px solid #FFCC00;
    padding-left: 20px;
}

nav ul li a.active {
    background-color: #00558C;
    color: white;
    border-left: 4px solid #FFCC00;
}

/* --- Footer --- */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: auto;
    font-size: 0.9rem;
}

/* --- Responsive (Mobile) --- */
@media (max-width: 768px) {
    .container {
        flex-direction: column; /* Passe en colonne sur mobile */
    }
    
    aside {
        order: -1; /* Met le menu en haut sur mobile */
    }
}