/* RESET GLOBAL */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    background-color: #f9fbfd;
    color: #1a1a1a;
    line-height: 1.6;
}

/* HEADER */
header {
    background: linear-gradient(120deg, #0b1f3a, #1f4e8c);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

/* LOGO */
.logo {
    width: 160px;
    margin-bottom: 20px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/* TITRES HEADER */
header h1 {
    font-size: 38px;
    margin-bottom: 10px;
}

header p {
    margin: 5px 0;
    opacity: 0.9;
}

/* SECTIONS */
section {
    max-width: 900px;
    margin: 60px auto;
    padding: 20px;
    border-bottom: 1px solid #eee;
}

/* TITRES */
h2 {
    color: #0b1f3a;
    margin-bottom: 20px;
    font-size: 26px;
}

h3 {
    margin-top: 25px;
    color: #123a6b;
    font-size: 18px;
}

/* TEXTE */
p {
    margin-bottom: 15px;
}

/* LISTES */
ul {
    padding-left: 20px;
}

li {
    margin-bottom: 8px;
}

/* BOUTONS */
.button {
    display: inline-block;
    background: linear-gradient(90deg, #0b1f3a, #1f4e8c);
    color: white;
    padding: 14px 28px;
    text-decoration: none;
    margin-top: 25px;
    border-radius: 6px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.button:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

/* CONTACT */
strong {
    color: #0b1f3a;
}

/* EFFET LÉGER SUR SECTIONS */
section:hover {
    transform: scale(1.01);
    transition: 0.3s;
}

/* RESPONSIVE (mobile) */
@media (max-width: 768px) {

    header {
        padding: 60px 15px;
    }

    header h1 {
        font-size: 28px;
    }

    section {
        margin: 40px 20px;
    }

    .logo {
        width: 120px;
    }
}