/* --- Body --- */
body {
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background-color: #f3f0f9;
    color: #333;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Bande violette en haut --- */
header {
    background: linear-gradient(135deg, #6a11cb, #8e2de2);
    height: 50px; /* hauteur réduite */
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* --- Main --- */
main {
    flex: 1;
    margin-top: 20px; /* espace sous header */
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

/* --- Titre de l'article --- */
.article-title {
    color: #5b1dbb;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

/* --- Article --- */
article {
    background: #fff;
    padding: 25px 20px;
    border-radius: 10px;
    border: 1px solid #e0d4f7;
    box-shadow: 0 3px 6px rgba(0,0,0,0.08);
    width: 90%;
    max-width: 800px;
    margin-bottom: 20px;
}

/* --- Bouton Retour --- */
a.btn {
    padding: 12px 25px;
    background: linear-gradient(135deg, #6a11cb, #8e2de2);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

a.btn:hover {
    background: linear-gradient(135deg, #8e2de2, #6a11cb);
    transform: translateY(-2px);
}

/* --- Footer --- */
footer {
    background: #6a11cb;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    width: 100%;
    font-size: 0.95rem;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.2);
    position: fixed;
    bottom: 0;
}