.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 70px;
    height: 100vh;
    background-color: #e0e0e0;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 250px; /* Décale l'ensemble des icônes vers le bas */
    transition: width 0.3s ease;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sidebar.expanded {
    width: 220px;
}

.menu-btn {
    cursor: pointer;
    font-size: 24px;
    margin-bottom: 20px;
    position: fixed;
    top: 10px;
    left: 20px;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav-links li {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.nav-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #333;
    height: 60px;
    width: 60px;
    border-radius: 15px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a i {
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar.expanded .nav-links a {
    justify-content: flex-start;
    padding-left: 20px;
    width: 100%;
}

.sidebar.expanded .nav-links a span {
    display: inline-block;
    margin-left: 15px;
}

.nav-links a span {
    display: none;
}

.sidebar.expanded .nav-links a {
    justify-content: flex-start;
}

/* Couleurs glaciales pour chaque section au survol */
.nav-links a.home:hover {
    background-color: #a3daff;
}
.nav-links a.entreprise:hover {
    background-color: #ffccd5;
}
.nav-links a.realisations:hover {
    background-color: #c7f9cc;
}
.nav-links a.veille:hover {
    background-color: #b2eaff;
}
.nav-links a.bilan:hover {
    background-color: #e0bbff;
}

/* Couleurs glaciales pour les sections actives avec ombre colorée */
.nav-links a.active.home {
    background-color: #66b2ff;
    color: #fff;
    box-shadow: 0 8px 20px rgba(102, 178, 255, 0.5);
}
.nav-links a.active.entreprise {
    background-color: #ff8c94;
    color: #fff;
    box-shadow: 0 8px 20px rgba(255, 140, 148, 0.5);
}
.nav-links a.active.realisations {
    background-color: #98e2b2;
    color: #fff;
    box-shadow: 0 8px 20px rgba(152, 226, 178, 0.5);
}
.nav-links a.active.veille {
    background-color: #7fd8ff;
    color: #fff;
    box-shadow: 0 8px 20px rgba(127, 216, 255, 0.5);
}
.nav-links a.active.bilan {
    background-color: #c085ff;
    color: #fff;
    box-shadow: 0 8px 20px rgba(192, 133, 255, 0.5);
}

.nav-links a.active {
    transform: translateX(10px);
}

@media screen and (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 60px;
        background-color: #e0e0e0;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0 10px;
        transition: height 0.3s ease;
        overflow: hidden;
        z-index: 999;
    }

    .sidebar.expanded {
        width: 100vw;       /* ✅ prend toute la largeur */
        height: 100vh;      /* ✅ prend toute la hauteur */
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding-top: 60px;
        background-color: #e0e0e0;
        overflow-y: auto;
    }

    .menu-btn {
        display: block;
        position: fixed;
        top: 15px;
        left: 20px;
        z-index: 1001;
        font-size: 24px;
        color: #333;
    }

    .nav-links {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        display: none;
    }

    .sidebar.expanded .nav-links {
        display: flex;
        padding-left: 20px;
    }

    .nav-links li {
        margin-bottom: 20px;
        width: 100%;
    }

    .nav-links a {
        width: 100%;
        justify-content: flex-start;
        padding-left: 10px;
        height: 50px;
    }

    .nav-links a span {
        display: inline-block;
        margin-left: 15px;
    }
}