   <style>
/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
}

/* Navbar principale */
.navbar {
    width: 100%;
    background: #28a745; /* vert agriculture */
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 50px;
    position: relative;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    z-index: 100;
}

.navbar .logo a {
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    text-decoration: none;
}

.navbar ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 15px;
}

.navbar ul li {
    position: relative;
}

.navbar ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    padding: 8px 12px;
    transition: all 0.3s ease;
}

.navbar ul li a:hover,
.navbar ul li.active a {
    background: #218838; /* vert foncé hover */
    border-radius: 5px;
}

/* Boutons spéciaux */
.navbar ul li .button-custom {
    background: #ffc107; /* bouton jaune pour mettre en valeur */
    color: #000 !important;
    padding: 8px 15px;
    border-radius: 30px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.navbar ul li .button-custom:hover {
    background: #e0a800;
    transform: translateY(-2px);
}

/* Icônes réseaux/admin */
.nav-icons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-icons a img {
    width: 35px;
    height: 35px;
    transition: transform 0.3s;
}

.nav-icons a img:hover {
    transform: scale(1.2);
}

/* Responsive menu hamburger */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    height: 3px;
    width: 25px;
    background: #fff;
    margin: 4px 0;
    transition: all 0.3s;
}

/* Responsive */
@media(max-width: 992px){
    .navbar {
        flex-wrap: wrap;
        padding: 10px 20px;
    }
    .navbar ul {
        flex-direction: column;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-in;
    }
    .navbar ul.show {
        max-height: 800px;
    }
    .menu-toggle {
        display: flex;
    }
}
</style>