/* ========================================
   MENU.CSS
   Desktop: Bootstrap navbar + dropdown
   Mobile: offcanvas full screen (top) con fade in/out,
           backdrop bianco soft (no nero),
           voci centrate orizzontalmente, sottovoci expand on click
   ======================================== */


/* ========================================
   MENU THEME (Bootstrap overrides)
   ======================================== */
.nav-link,
.dropdown-item{
    color: var(--c-text);
}

.nav-link:hover,
.dropdown-item:hover{
    color: var(--c-primary);
    background: rgba(44,158,175,0.08);
}

/* Evidenza menu attivo */
.navbar .nav-link.active,
.navbar .dropdown-toggle.active{
    font-weight: 700;
    color: var(--c-primary);
}

.dropdown-item.active,
.dropdown-item:active{
    color: var(--c-primary);
    background: rgba(44,158,175,0.12);
}

.nav-link:focus,
.dropdown-item:focus{
    color: var(--c-primary);
    background: rgba(44,158,175,0.10);
    box-shadow: none;
}

.dropdown-menu{
    border-radius: var(--radius-md);
    border: 0.0625rem solid rgba(0,0,0,0.08);
    box-shadow: var(--shadow-soft);
}


/* ========================================
   MOBILE OFFCANVAS FULLSCREEN (TOP)
   Fade in/out + backdrop bianco soft
   ======================================== */
@media (max-width: 74.99875rem){

    /* ========================================
   Navbar toggler – remove click focus ring
   (mantiene focus visibile per tastiera)
   ======================================== */
    .navbar-toggler:focus{
        box-shadow: none;
    }

    .navbar-toggler:focus-visible{
        outline: none;
        box-shadow: none;
    }


    button.navbar-toggler {
        border: none;
        padding: 0;
    }

    /* ----------------------------------------
       Backdrop (bianco soft invece del nero)
       ---------------------------------------- */
    .offcanvas-backdrop{
        background-color: #fff !important;
    }

    /* Bootstrap gestisce opacity tramite .fade/.show */
    .offcanvas-backdrop.fade{
        opacity: 0;
        transition: opacity 0.22s ease;
    }

    .offcanvas-backdrop.show{
        opacity: 0.65; /* regola qui: 0.35 più leggero, 0.75 più coprente */
    }

    @media (max-width: 74.99875rem){
        /* Backdrop “glass” (blur leggero) */
        .offcanvas-backdrop{
            backdrop-filter: blur(0.5rem);
            -webkit-backdrop-filter: blur(0.5rem);
        }
    }


    /* ----------------------------------------
       Offcanvas full height & fullscreen
       ---------------------------------------- */
    #mainNav.offcanvas{
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100vw !important;
        height: 100dvh !important;
        z-index: 1060 !important;
        background: #fff !important;

        transform: none !important;

        opacity: 0;
        pointer-events: none;

        transition: opacity 0.22s ease;
        will-change: opacity;
    }

    #mainNav.offcanvas-fullscreen.offcanvas-top{
        height: 100dvh !important;
        background: #fff !important;
        overflow: hidden;
    }

    #mainNav.offcanvas.showing,
    #mainNav.offcanvas.show{
        transform: none !important;

        opacity: 1;
        pointer-events: auto;
    }

    #mainNav.offcanvas.hiding{
        transform: none !important;

        opacity: 0;
        pointer-events: none;
    }

    /* ----------------------------------------
       Body: layout stabile, scroll solo a menu aperto
       ---------------------------------------- */
    #mainNav .offcanvas-body{
        display: block;
        padding: 1rem;
        background: #fff;

        /* default: niente scrollbar durante apertura */
        overflow: hidden;
    }

    #mainNav.show .offcanvas-body{
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;

        /* Evita shift/layout jump quando compare la scrollbar */
        scrollbar-gutter: stable;
    }

    /* ----------------------------------------
       Topbar interna (LOGO + X) dentro offcanvas-body
       ---------------------------------------- */
    #mainNav .menu-topbar{
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;

        padding: 0.35rem 0 1.3rem 0;
        margin-bottom: 0.75rem;

        border-bottom: 0.0625rem solid rgba(0,0,0,0.06);
        background: #fff;
    }

    #mainNav .menu-logo{
        display: inline-flex;
        align-items: center;
    }

    #mainNav .menu-logo img{
        display: block;
        max-width: 100%;
        height: auto;
    }

    #mainNav .menu-topbar .btn-close{
        margin: 0;
    }

    /* ----------------------------------------
       Nav list
       ---------------------------------------- */
    #mainNav .navbar-nav{
        width: 100%;
        max-width: 22rem;
        margin: 0 auto;
        text-align: center;
        gap: 0.25rem;
    }

    #mainNav .nav-link{
        padding: 0.9rem 1rem;
        border-radius: 0.875rem;
        font-size: 1.05rem;
        justify-content: center;
        font-weight: 900;
    }

    #mainNav .btn.btn-accent{
        width: 100%;
        margin-top: 0.75rem;
    }

    /* ----------------------------------------
       DROPDOWN MOBILE - EXPAND (accordion)
       ---------------------------------------- */
    #mainNav .dropdown-menu{
        position: static !important;
        float: none !important;
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        transform: none !important;

        border: none !important;
        box-shadow: none !important;
        background: transparent !important;

        display: block !important;

        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: max-height 0.3s ease, opacity 0.25s ease;
    }

    #mainNav .dropdown.show > .dropdown-menu,
    #mainNav .dropdown-menu.show{
        max-height: 30rem !important;
        opacity: 1 !important;
        padding-top: 0.25rem !important;
        visibility: visible !important;
    }

    #mainNav .dropdown-item{
        padding: 0.75rem 1rem;
        border-radius: 0.75rem;
        text-align: center;
    }

    #mainNav .dropdown-toggle::after{
        margin-left: 0.5rem;
        transition: transform 0.2s ease;
    }

    /* La freccia segue lo stato che Bootstrap mette sul link (.show) */
    #mainNav .dropdown-toggle.show::after{
        transform: rotate(180deg);
    }

    /* ----------------------------------------
       Reduced motion
       ---------------------------------------- */
    @media (prefers-reduced-motion: reduce){
        .offcanvas-backdrop.fade{
            transition: none;
        }
        #mainNav.offcanvas{
            transition: none;
        }
        #mainNav .dropdown-menu{
            transition: none;
        }
    }
}