body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f6f8;
    color: #333;
}

/* HEADER */
header {
    background-color: #0a3d62;
    color: white;
    text-align: center;
    padding: 30px 15px;
}

header h1 {
    margin: 0;
    font-size: 32px;
}

header p {
    margin-top: 8px;
    font-size: 16px;
}

/* NAVIGATION */
nav {
    background-color: #1e3799;
    text-align: center;
    padding: 10px;
}

nav a {
    color: white;
    margin: 0 12px;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

/* SECTIONS */
section {
    background: white;
    margin: 20px auto;
    padding: 20px;
    max-width: 900px;
    border-radius: 6px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

section h2 {
    color: #1e3799;
}

/* LISTE SERVICES */
ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding: 8px 0;
    font-size: 16px;
}

/* CONTACT */
#contact a {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 15px;
    background-color: #25D366;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

#contact a:hover {
    background-color: #1ebe5d;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 15px;
    background-color: #0a3d62;
    color: white;
    margin-top: 30px;
    font-size: 14px;
}

/* RESPONSIVE */
@media (max-width: 600px) {
    header h1 {
        font-size: 24px;
    }

    nav a {
        display: block;
        margin: 8px 0;
    }
}