/* --- Variables et Styles Généraux --- */
:root {
    --primary-color: #0d47a1;  /* Bleu foncé inspiré du logo */
    --secondary-color: #ffab00; /* Jaune/Or inspiré de l'étoile */
    --dark-color: #222;
    --light-color: #f9f9f9;
    --text-color: #333;
}

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

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

.container {
    max-width: 1100px;
    margin: auto;
    overflow: hidden;
    padding: 0 2rem;
}

h1, h2, h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    color: var(--primary-color);
}

h1 { font-size: 2.8rem; margin-bottom: 1rem; }
h2 { font-size: 2.2rem; margin-bottom: 1rem; text-align: center; padding-top: 2rem; }
p { margin: 0.5rem 0; }
a { color: var(--secondary-color); text-decoration: none; }
img { max-width: 100%; }

/* --- Barre de Navigation --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #fff;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
    z-index: 10;
}

.navbar .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.navbar .logo span {
    color: var(--secondary-color);
}

.navbar ul {
    display: flex;
    list-style: none;
}

.navbar ul li a {
    padding: 0.75rem 1rem;
    margin: 0 0.25rem;
    color: var(--dark-color);
    font-weight: 600;
    transition: all 0.3s ease;
}

.navbar ul li a:hover, .navbar ul li a.active {
    color: var(--secondary-color);
    background-color: rgba(255, 171, 0, 0.1);
    border-radius: 5px;
}

/* --- Section Hero (Bannière principale) --- */
.hero {
    height: 70vh;
    background: linear-gradient(rgba(13, 71, 161, 0.7), rgba(13, 71, 161, 0.7)), url('https://picsum.photos/1600/900?random=1') no-repeat center center/cover;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 1rem;
}

.hero h1 {
    color: #fff;
    font-size: 3.5rem;
}

.hero p {
    font-size: 1.3rem;
    max-width: 700px;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    margin-top: 1.5rem;
    background: var(--secondary-color);
    color: var(--dark-color);
    border: none;
    border-radius: 5px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.btn:hover {
    transform: scale(1.05);
}

/* --- Sections de contenu --- */
.section {
    padding: 4rem 0;
}
.section-light {
    background-color: var(--light-color);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    text-align: center;
}

.card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}
.card:hover {
    transform: translateY(-10px);
}
.card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* --- Page Réalisations --- */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 4rem auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--secondary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.timeline-item.left { left: 0; }
.timeline-item.right { left: 50%; }

.timeline-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    right: -17px;
    background-color: white;
    border: 4px solid var(--secondary-color);
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item.right::after { left: -16px; }

.timeline-content {
    padding: 20px 30px;
    background-color: var(--light-color);
    position: relative;
    border-radius: 6px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.timeline-content h3 { font-size: 1.5rem; }
.timeline-content img { border-radius: 5px; margin-top: 1rem; }

/* --- Page Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-top: 3rem;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-family: inherit;
}

.contact-info li {
    list-style: none;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* --- Pied de Page --- */
.footer {
    background: var(--dark-color);
    color: #fff;
    text-align: center;
    padding: 2rem 0;
}
.footer p { color: #ccc; }

/* --- Responsive (pour mobiles) --- */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .hero h1 { font-size: 2.8rem; }
    .hero p { font-size: 1.1rem; }

    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .navbar ul {
        display: none; /* Caché par défaut */
        flex-direction: column;
        width: 100%;
        text-align: center;
    }
    
    .navbar ul.active {
        display: flex; /* Affiché avec JS */
    }

    .navbar ul li {
        width: 100%;
    }

    .navbar ul li a {
        padding: 1rem;
        border-bottom: 1px solid #444;
    }

    .menu-toggle {
        display: block;
        position: absolute;
        top: 1.5rem;
        right: 1.5rem;
        cursor: pointer;
    }
    
    .menu-toggle .bar {
        width: 25px;
        height: 3px;
        background: var(--dark-color);
        margin: 5px 0;
        transition: 0.4s;
    }

    .grid-3, .grid-4, .contact-grid {
        grid-template-columns: 1fr;
    }

    .timeline::after { left: 31px; }
    .timeline-item { width: 100%; padding-left: 70px; padding-right: 25px; }
    .timeline-item.right { left: 0%; }
    .timeline-item::after { left: 15px; }
}

/* --- Style pour le logo image --- */
.navbar .logo-link {
    display: flex;
    align-items: center;
}

.navbar .logo-img {
    height: 45px; /* Ajustez cette valeur si nécessaire */
    width: auto;
}