/* =========================================================
   R4 Nav — Public Navbar
   Compatibile con la navbar Bootstrap esistente.
   ========================================================= */

.r4-nav,
.navbar[data-r4-nav="1"] {
    position: relative;
    background: var(--nav-bg, #ffffff);
    transition:
        background-color .25s ease,
        box-shadow .25s ease,
        border-color .25s ease,
        backdrop-filter .25s ease;
}

/* Sticky moderno */
.r4-nav.r4-nav--sticky,
.navbar[data-r4-nav="1"].r4-nav--sticky {
    position: sticky;
    top: 0;
    z-index: 1030;
    backdrop-filter: saturate(1.15) blur(10px);
    -webkit-backdrop-filter: saturate(1.15) blur(10px);
}

/* Stato dopo scroll */
.r4-nav.is-scrolled,
.navbar[data-r4-nav="1"].is-scrolled {
    background: var(--nav-bg-scrolled, rgba(255, 255, 255, .92));
    box-shadow: 0 18px 40px -28px rgba(15, 23, 42, .38);
}

/* Layout base Bootstrap */
.navbar[data-r4-nav="1"] {
    min-height: 72px;
    border-bottom-color: rgba(148, 163, 184, .22) !important;
}

.navbar[data-r4-nav="1"] .container {
    gap: 1rem;
}

.navbar[data-r4-nav="1"] .navbar-brand {
    min-width: 0;
    font-weight: 800;
    letter-spacing: -.02em;
}

.navbar[data-r4-nav="1"] .navbar-brand img {
    max-height: 42px;
    width: auto;
    object-fit: contain;
}

/* Toggle mobile più moderno */
.navbar[data-r4-nav="1"] .navbar-toggler {
    border: 1px solid rgba(148, 163, 184, .35);
    border-radius: 14px;
    padding: .55rem .65rem;
    box-shadow: none;
}

.navbar[data-r4-nav="1"] .navbar-toggler:focus {
    box-shadow: 0 0 0 .2rem rgba(37, 99, 235, .16);
}

/* Link principali */
.navbar[data-r4-nav="1"] .navbar-nav {
    gap: .2rem;
}

.navbar[data-r4-nav="1"] .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: .42rem;
    padding: .55rem .78rem;
    border-radius: 999px;
    color: var(--nav-link, #111827) !important;
    background: transparent;
    line-height: 1.15;
    transition:
        color .16s ease,
        background-color .16s ease,
        transform .16s ease,
        box-shadow .16s ease;
}

.navbar[data-r4-nav="1"] .nav-link > span {
    display: inline-block;
}

.navbar[data-r4-nav="1"] .nav-link i {
    font-size: .95em;
    line-height: 1;
}

/* Hover desktop */
.navbar[data-r4-nav="1"] .nav-link:hover,
.navbar[data-r4-nav="1"] .nav-link:focus {
    color: var(--nav-link-hover, #2563eb) !important;
    background: rgba(37, 99, 235, .075);
    transform: translateY(-1px);
}

/* Indicatore leggero sotto link */
.navbar[data-r4-nav="1"] .nav-link::after {
    border: 0;
}

.navbar[data-r4-nav="1"] .nav-link:not(.dropdown-toggle)::before,
.navbar[data-r4-nav="1"] .dropdown-toggle::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: .28rem;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: var(--nav-link-hover, #2563eb);
    transform: translateX(-50%);
    transition: width .18s ease;
}

.navbar[data-r4-nav="1"] .nav-link:hover::before,
.navbar[data-r4-nav="1"] .nav-link:focus::before {
    width: 38%;
}

/* Dropdown */
.navbar[data-r4-nav="1"] .dropdown-menu {
    min-width: 230px;
    padding: .55rem;
    margin-top: .55rem;
    background: var(--nav-sub-bg, #ffffff);
    border: 1px solid rgba(148, 163, 184, .28);
    border-radius: 18px;
    box-shadow:
        0 24px 60px -28px rgba(15, 23, 42, .45),
        0 8px 22px -18px rgba(15, 23, 42, .45);
}

.navbar[data-r4-nav="1"] .dropdown-item {
    border-radius: 12px;
    padding: .58rem .7rem;
    color: var(--nav-link, #111827);
    font-size: .92rem;
    font-weight: 500;
    transition:
        background-color .15s ease,
        color .15s ease,
        transform .15s ease;
}

.navbar[data-r4-nav="1"] .dropdown-item:hover,
.navbar[data-r4-nav="1"] .dropdown-item:focus {
    background: rgba(37, 99, 235, .08);
    color: var(--nav-link-hover, #2563eb);
    transform: translateX(2px);
}

.navbar[data-r4-nav="1"] .dropdown-header {
    color: #64748b;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    padding: .45rem .7rem .3rem;
}

.navbar[data-r4-nav="1"] .dropdown-divider {
    border-top-color: rgba(148, 163, 184, .28);
    margin: .45rem .25rem;
}

/* Separatore top-level */
.navbar[data-r4-nav="1"] .nav-sep .vr {
    width: 1px;
    height: 1.35rem;
    background: rgba(148, 163, 184, .42);
    display: inline-block;
}

/* Area account/login */
.navbar[data-r4-nav="1"] .navbar-nav.ms-auto {
    gap: .2rem;
}

.navbar[data-r4-nav="1"] .navbar-nav.ms-auto .nav-link {
    background: rgba(15, 23, 42, .035);
    border: 1px solid rgba(148, 163, 184, .22);
}

.navbar[data-r4-nav="1"] .navbar-nav.ms-auto .nav-link:hover {
    background: rgba(37, 99, 235, .09);
    border-color: rgba(37, 99, 235, .18);
}

/* Componenti custom legacy mantenuti */
.r4-nav__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: .5rem 1rem;
    display: flex;
}

.r4-nav__inner--left { justify-content: flex-start; }
.r4-nav__inner--center { justify-content: center; }
.r4-nav__inner--right { justify-content: flex-end; }

.r4-nav__list {
    display: flex;
    gap: 1rem;
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: var(--nav-font, inherit);
    font-size: var(--nav-font-size, 16px);
    font-weight: var(--nav-weight, 600);
    font-style: var(--nav-style, normal);
}

.r4-nav__list--text-left { text-align: left; }
.r4-nav__list--text-center { text-align: center; }
.r4-nav__list--text-right { text-align: right; }

.r4-nav__item { position: relative; }

.r4-nav__link {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem .75rem;
    color: var(--nav-link);
    text-decoration: none;
    border-radius: .5rem;
    background: var(--nav-item-bg);
}

.r4-nav__link:hover {
    color: var(--nav-link-hover);
}

.r4-nav__item:hover > .r4-nav__submenu {
    display: block;
}

.r4-nav__submenu {
    display: none;
    position: absolute;
    left: 0;
    top: 100%;
    min-width: 220px;
    padding: .5rem;
    margin-top: .25rem;
    background: var(--nav-sub-bg);
    border: 1px solid rgba(0, 0, 0, .06);
    border-radius: .75rem;
    box-shadow: 0 8px 24px rgba(16, 24, 40, .15);
}

.r4-nav__subitem {
    list-style: none;
}

.r4-nav__sublink {
    display: block;
    padding: .4rem .6rem;
    color: var(--nav-link);
    text-decoration: none;
    border-radius: .375rem;
}

.r4-nav__sublink:hover {
    color: var(--nav-link-hover);
    background: rgba(0, 0, 0, .04);
}

.r4-nav__sep {
    display: flex;
    align-items: center;
}

.r4-nav__sep > span {
    display: block;
    width: 1px;
    height: 1.25rem;
    background: rgba(0, 0, 0, .15);
    margin: 0 .35rem;
}

.r4-nav__submenu .r4-nav__sep > span {
    width: 100%;
    height: 1px;
    margin: .25rem 0;
}

/* Mobile */
@media (max-width: 991.98px) {
    .navbar[data-r4-nav="1"] {
        min-height: 64px;
    }

    .navbar[data-r4-nav="1"] .navbar-collapse {
        margin-top: .85rem;
        padding: .8rem;
        border: 1px solid rgba(148, 163, 184, .25);
        border-radius: 20px;
        background: rgba(255, 255, 255, .96);
        box-shadow: 0 24px 50px -34px rgba(15, 23, 42, .48);
    }

    .navbar[data-r4-nav="1"] .navbar-nav {
        gap: .3rem;
    }

    .navbar[data-r4-nav="1"] .nav-link {
        width: 100%;
        justify-content: space-between;
        border-radius: 14px;
        padding: .72rem .85rem;
        background: rgba(248, 250, 252, .8);
    }

    .navbar[data-r4-nav="1"] .nav-link::before {
        display: none;
    }

    .navbar[data-r4-nav="1"] .dropdown-menu {
        margin-top: .35rem;
        margin-bottom: .45rem;
        border-radius: 16px;
        box-shadow: none;
        border-color: rgba(148, 163, 184, .22);
    }

    .navbar[data-r4-nav="1"] .navbar-nav.ms-auto {
        margin-top: .6rem;
        padding-top: .6rem;
        border-top: 1px solid rgba(148, 163, 184, .22);
    }
}