:root {
    --primary-color: #004d99; /* Bleu foncé */
    --secondary-color: #007bff; /* Bleu vif */
    --accent-color: #ff6347; /* Rouge orangé */
    --bg-color: #f4f7f9;
    --text-color: #333;
    --card-bg: #fff;
    --shadow-light: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* En-tête (Header) */
header {
    background-color: var(--primary-color);
    color: var(--card-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 1.5rem;
}

nav a {
    color: var(--card-bg);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Bannière "Héro" (Hero) */
.hero {
    background-color: var(--secondary-color);
    color: var(--card-bg);
    text-align: center;
    padding: 4rem 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
}

/* Section des services */
.services-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 3rem 2rem;
    flex-wrap: wrap;
}

.service-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    text-align: center;
    max-width: 350px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.service-card .icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.service-card p {
    margin-bottom: 1.5rem;
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-color);
    color: var(--card-bg);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #e65c3e;
}

/* Pied de page (Footer) */
footer {
    text-align: center;
    padding: 1rem;
    background-color: var(--primary-color);
    color: var(--card-bg);
}

/* Adaptation pour les appareils mobiles (Responsive) */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
    }
    nav ul {
        flex-direction: column;
        margin-top: 1rem;
    }
    nav ul li {
        margin: 0.5rem 0;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .services-container {
        flex-direction: column;
        align-items: center;
    }
}