body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #003459, #00171F);
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: #fff;
}

/* Menu latéral */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 220px;
    height: 100vh;
    background: #00171F;
    padding: 20px 15px;
    box-sizing: border-box;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.25);
}

/* Liste du menu */
nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Chaque item */
nav li {
    flex: 1;
}

/* Lien centré verticalement et horizontalement */
nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-decoration: none;
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    transition: all 0.25s ease;
}

/* Effet au survol */
nav a:hover {
    background: rgba(0, 173, 181, 0.18);
    transform: translateX(4px);
}

/* Page active */
nav a.active {
    background: #00adb5;
    color: #00171F;
}

/* Contenu principal */
main {
    margin-left: 220px;
    padding: 30px;
    text-align: center;
}

p {
	font-size: 150%;
}