:root {
    --primary: #1E3A5F;
    --secondary: #2E5C8A;
    --accent: #E67E22;
    --light-bg: #F4F6F8;
    --text-dark: #2C3E50;
    --white: #FFFFFF;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.6;
}

header {
    background-color: var(--primary);
    color: var(--white);
    padding: 20px 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 22px;
}

nav a {
    color: var(--white);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
}

nav a:hover {
    color: var(--accent);
}

.hero {
    background: linear-gradient(rgba(30,58,95,0.85), rgba(30,58,95,0.85)),
                url('../IMG/fond_ext1.jpg') center/cover;
    color: var(--white);
    padding: 100px 10%;
    text-align: center;
}

.hero h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 40px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
}

.hero button {
    background-color: var(--accent);
    border: none;
    padding: 12px 25px;
    color: var(--white);
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
}

.hero button:hover {
    background-color: #cf6d17;
}

.section {
    padding: 60px 10%;
}

.section h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary);
}

.cards {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.card {
    background-color: var(--white);
    padding: 25px;
    border-radius: 6px;
    flex: 1;
    min-width: 250px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.card h4 {
    margin-bottom: 10px;
    color: var(--secondary);
}

footer {
    background-color: var(--primary);
    color: var(--white);
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    font-size: 14px;
}

@media (max-width: 768px) {
    .cards {
        flex-direction: column;
    }

    .hero h2 {
        font-size: 28px;
    }
}