.alvitam-nav {
    font-family: 'Chakra Petch', sans-serif;
    padding: 0.75rem 1.5rem;
    transition: background 0.4s, backdrop-filter 0.4s, box-shadow 0.4s;
    background: linear-gradient(135deg, rgba(84,43,139,0.55) 0%, rgba(10,10,15,0.45) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(92,225,230,0.15);
    z-index: 1000;
}

.alvitam-nav.scrolled {
    background: linear-gradient(135deg, rgba(84,43,139,0.75) 0%, rgba(10,10,15,0.88) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(92,225,230,0.2), 0 4px 30px rgba(84,43,139,0.3);
}

/* Brand */
.alvitam-nav .navbar-brand {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #ffffff !important;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alvitam-nav .navbar-brand span {
    color: #5ce1e6;
}

/* Nav links */
.alvitam-nav .nav-link {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.88) !important;
    padding: 0.4rem 0.55rem !important;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
    text-decoration: none;
    white-space: nowrap;
}

.alvitam-nav .nav-link:hover {
    color: #5ce1e6 !important;
    background: rgba(92, 225, 230, 0.08);
}

.alvitam-nav .nav-link.active {
    color: #5ce1e6 !important;
}

/* Divider */
.nav-divider {
    width: 1px;
    height: 20px;
    background: rgba(92, 225, 230, 0.25);
    margin: 0 0.5rem;
    align-self: center;
}

/* CTA buttons */
.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.7rem;
    border-radius: 7px;
    font-family: 'Chakra Petch', sans-serif;
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-decoration: none;
    transition: all 0.25s;
    white-space: nowrap;
    cursor: pointer;
    border: none;
    outline: none;
    line-height: 1.2;
}
/* Sur desktop, on garde tout sur une seule ligne — pas de wrap entre boutons */
@media (min-width: 992px) {
    .nav-right-group { flex-wrap: nowrap !important; gap: 0.4rem !important; }
    .alvitam-nav .navbar-nav { flex-wrap: nowrap; }
}

.btn-nav-ghost {
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-nav-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-nav-trust {
    background: linear-gradient(135deg, rgba(84,43,139,0.8), rgba(123,61,191,0.7));
    color: #ffffff;
    border: 1px solid rgba(150,80,220,0.6);
    box-shadow: 0 0 12px rgba(84,43,139,0.4);
}

.btn-nav-trust:hover {
    background: linear-gradient(135deg, #542b8b, #7b3dbf);
    color: #ffffff;
    box-shadow: 0 0 22px rgba(84,43,139,0.7);
}

.btn-nav-stock {
    background: linear-gradient(135deg, rgba(92,225,230,0.2), rgba(26,188,156,0.2));
    color: #5ce1e6;
    border: 1px solid rgba(92,225,230,0.5);
    box-shadow: 0 0 10px rgba(92,225,230,0.15);
}

.btn-nav-stock:hover {
    background: linear-gradient(135deg, rgba(92,225,230,0.3), rgba(26,188,156,0.3));
    color: #ffffff;
    box-shadow: 0 0 22px rgba(92,225,230,0.35);
}

.btn-nav-logout {
    background: transparent;
    color: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-nav-logout:hover {
    background: rgba(255, 80, 80, 0.1);
    color: #ff6b6b;
    border-color: rgba(255, 80, 80, 0.3);
}

/* Toggler */
.alvitam-nav .navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 0.4rem 0.65rem;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.05);
    transition: background 0.2s;
}

.alvitam-nav .navbar-toggler:hover {
    background: rgba(255, 255, 255, 0.1);
}

.alvitam-nav .navbar-toggler:focus {
    box-shadow: none;
}

/* ===== DROPDOWN ===== */
.alvitam-nav .dropdown-menu {
    background: rgba(12, 12, 20, 0.97);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(92,225,230,0.15);
    border-radius: 12px;
    padding: 0.5rem;
    margin-top: 0.5rem;
    min-width: 260px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(92,225,230,0.05);
}

.alvitam-nav .dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    transition: background 0.2s;
}

.alvitam-nav .dropdown-item:hover {
    background: rgba(255,255,255,0.06);
    color: #ffffff;
}

.dropdown-item-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.9rem;
}

.alvitam-nav .dropdown-item span:last-child {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.alvitam-nav .dropdown-item strong {
    font-size: 0.88rem;
    font-weight: 600;
    color: #ffffff;
}

.alvitam-nav .dropdown-item small {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.45);
}

.alvitam-nav .dropdown-divider {
    border-color: rgba(255,255,255,0.07);
    margin: 0.35rem 0.5rem;
}

.dropdown-item-all {
    font-size: 0.78rem !important;
    color: rgba(92,225,230,0.7) !important;
    justify-content: center;
    font-weight: 500 !important;
    letter-spacing: 0.04em;
}

.dropdown-item-all:hover {
    color: #5ce1e6 !important;
    background: rgba(92,225,230,0.06) !important;
}

/* Flèche du toggle */
.alvitam-nav .dropdown-toggle::after {
    border-color: rgba(255,255,255,0.5) transparent transparent;
    vertical-align: 0.15em;
}

/* ===== MOBILE / TABLETTE ===== */
@media (max-width: 1199px) {
    .alvitam-nav .navbar-collapse {
        background: linear-gradient(135deg, rgba(84,43,139,0.92) 0%, rgba(10,10,15,0.97) 100%);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(92,225,230,0.15);
        border-radius: 12px;
        padding: 1rem 1.25rem;
        margin-top: 0.75rem;
    }

    .nav-divider { display: none; }

    .alvitam-nav .nav-link {
        padding: 0.55rem 0.5rem !important;
        border-radius: 8px;
    }

    .nav-right-group {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        padding-top: 0.75rem;
        border-top: 1px solid rgba(255,255,255,0.07);
        margin-top: 0.5rem;
    }

    .btn-nav { width: 100%; justify-content: center; padding: 0.6rem 1rem; }
}