body { 
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    color: #f2f2f2;
    background-image: url("backgroundpurple_ia.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 1.5em 10px; 
    margin: 0;
    line-height: 1.6;
}

h1 {
    text-align: center; 
    font-size: 1.6rem; 
    color: #ffffff;
    max-width: 95%; 
    margin: 0 auto 30px;
    padding: 20px 10px;
    background: rgba(20, 20, 50, 0.85);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.sommaire {
    max-width: 50em;
    margin: 0 auto 20px auto;
    background: rgba(20, 20, 50, 0.85);
    padding: 20px;
    border-radius: 16px;
	border-left: 5px solid #6c5ce7;
}


.sommaire h6 {
    font-size: 1.2rem;
    margin: 0 0 10px 0;
    color: #c6b7ff;
}

.sommaire ul {
    list-style: none;
    padding-left: 10px;
}

.sommaire a {
    color: #a29bfe;
    text-decoration: none;
    transition: color 0.3s;
}

.sommaire a:hover {
    color: #ffffff;
    text-decoration: underline;
}


article {
    width: 100%; 
    max-width: 50em; 
    margin: 0 auto 40px auto;
    background: rgba(20, 20, 50, 0.85);
    border-radius: 16px;
    padding: 25px 15px; 
    box-sizing: border-box; 
}

h2 {
    font-size: 1.6rem;
    color: #c6b7ff;
    border-bottom: 1px solid rgba(198, 183, 255, 0.3);
    padding-bottom: 10px;
    margin-top: 40px;
}

h3 {
    font-size: 1.8rem;
    color: #a29bfe;
    margin-top: 25px;
}

p {
    margin-bottom: 15px;
    color: #e0e0e0;
}

figure {
    display: flex;
    justify-content: center; 
    align-items: center;   
    margin: 30px 0;      
    padding: 0;
    width: 100%;
}

figure img {
    display: block;       
    margin: 0 auto;        
    width: 100%;        
    max-width: 450px;      
    height: auto;          
    border-radius: 4px;     
    border: 1px solid #6c5ce7; 
    box-shadow: 0 0 15px rgba(108, 92, 231, 0.2); 
}

@media (min-width: 768px) {
    body {
        padding: 4em 2em;
        padding-left: 0; 
        display: block;  
    }

    h1 {
        font-size: 2.4rem;
        padding: 40px;
        z-index: 1001; 
    }

    article {
        margin: 0 auto 40px auto; 
        width: 90%;
        max-width: 50em; 
        padding: 40px;
        position: relative;
    }

    .sommaire {
        position: fixed;
        top: 200px;
        left: 20px;         
        width: 180px;       
        max-height: 60vh; 
        background: rgba(20, 20, 50, 0.9);
        padding: 15px;
        border-radius: 8px;
        border: 1px solid #6c5ce7;
        overflow-y: auto;
        z-index: 9990;
        font-size: 0.85rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 2.2rem;
    }

    figure img {
        width: 70%; 
    }
}

p, a, li {
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}