/* ==========================================================================
   SUNYA - Mega Menu (supporto fino a 4 livelli)
   
   Struttura esempio grigolettihome.com:
   ┌─────────────────────────────────────────────────────────────────────┐
   │ Tavola (livello 0 - voce menu)                                     │
   ├──────────┬──────────┬──────────┬──────────────────────────┐        │
   │ Porcel-  │ Cristal- │ Posate   │ ┌──────────────────────┐ │        │
   │ lane     │ leria    │          │ │  PRODOTTO IN         │ │        │
   │ ─────── │ ─────── │ ─────── │ │  EVIDENZA            │ │        │
   │ ▸ Ginori │ ▸ Riedel │ ▸ Brand  │ │  (feature column)   │ │        │
   │   · OI   │   · Viti │          │ │                      │ │        │
   │     Cast │   · Prf  │          │ └──────────────────────┘ │        │
   │     Mala │          │          │                          │        │
   │   · Cat  │          │          │                          │        │
   │ ▸ Herend│          │          │                          │        │
   │   · Appo │          │          │                          │        │
   └──────────┴──────────┴──────────┴──────────────────────────┘        │
   ========================================================================== */

/* --------------------------------------------------------------------------
   Pannello mega menu
   -------------------------------------------------------------------------- */

.sunya-mega-item > .sunya-mega__panel {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100vw;
    background-color: var(--sunya-color-bg);
    border-top: 1px solid var(--sunya-color-border);
    border-bottom: 3px solid var(--sunya-color-accent);
    box-shadow: var(--sunya-shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--sunya-transition-base),
                transform var(--sunya-transition-base),
                visibility var(--sunya-transition-base);
    z-index: 100;
}

/* Posizionamento full-width relativo alla viewport */
.sunya-mega-item {
    position: static !important;
}

/* Apertura al hover (desktop) */
@media screen and (min-width: 1025px) {

    .sunya-mega-item:hover > .sunya-mega__panel,
    .sunya-mega-item:focus-within > .sunya-mega__panel {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
}


/* --------------------------------------------------------------------------
   Layout interno mega menu
   -------------------------------------------------------------------------- */

.sunya-mega__inner {
    display: flex;
    gap: var(--sunya-spacing-2xl);
    padding: var(--sunya-spacing-2xl) 0;
    max-height: 70vh;
    overflow-y: auto;
}

/* Scrollbar sottile */
.sunya-mega__inner::-webkit-scrollbar {
    width: 4px;
}

.sunya-mega__inner::-webkit-scrollbar-track {
    background: transparent;
}

.sunya-mega__inner::-webkit-scrollbar-thumb {
    background: var(--sunya-color-border);
    border-radius: 4px;
}

.sunya-mega__columns {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--sunya-spacing-xl) var(--sunya-spacing-2xl);
    flex: 1;
    list-style: none;
    margin: 0;
    padding: 0;
    align-content: start;
}


/* --------------------------------------------------------------------------
   LIVELLO 1 — Colonna (es: Porcellane, Cristalleria, Posate)
   -------------------------------------------------------------------------- */

.sunya-mega__column-title {
    display: block;
    font-family: var(--sunya-font-heading);
    font-size: var(--sunya-font-size-base);
    font-weight: var(--sunya-font-weight-bold);
    color: var(--sunya-color-primary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding-bottom: var(--sunya-spacing-sm);
    margin-bottom: var(--sunya-spacing-sm);
    border-bottom: 2px solid var(--sunya-color-accent);
}

.sunya-mega__column-title:hover {
    color: var(--sunya-color-accent);
}


/* --------------------------------------------------------------------------
   LIVELLO 2 — Brand / Sottogruppo (es: Richard Ginori, Herend)
   -------------------------------------------------------------------------- */

.sunya-mega__sub--level-2 {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sunya-mega__sub--level-2 > li {
    margin-bottom: var(--sunya-spacing-md);
}

.sunya-mega__sub--level-2 > li:last-child {
    margin-bottom: 0;
}

.sunya-mega__brand-title {
    display: block;
    font-size: var(--sunya-font-size-sm);
    font-weight: var(--sunya-font-weight-bold);
    color: var(--sunya-color-primary);
    text-decoration: none;
    padding: var(--sunya-spacing-xs) 0;
    margin-bottom: 2px;
    transition: color var(--sunya-transition-fast);
}

.sunya-mega__brand-title:hover {
    color: var(--sunya-color-accent);
}


/* --------------------------------------------------------------------------
   LIVELLO 3 — Collezione (es: Oriente Italiano, Catene)
   -------------------------------------------------------------------------- */

.sunya-mega__sub--level-3 {
    list-style: none;
    margin: 0;
    padding: 0;
    padding-left: var(--sunya-spacing-sm);
    border-left: 1px solid var(--sunya-color-border);
}

.sunya-mega__collection-title {
    display: block;
    padding: 2px 0 2px var(--sunya-spacing-sm);
    color: var(--sunya-color-text);
    font-size: var(--sunya-font-size-sm);
    font-weight: var(--sunya-font-weight-medium);
    text-decoration: none;
    transition: color var(--sunya-transition-fast),
                padding-left var(--sunya-transition-fast);
}

.sunya-mega__collection-title:hover {
    color: var(--sunya-color-accent);
    padding-left: calc(var(--sunya-spacing-sm) + 4px);
}

/* Collezioni con figli: espandibili */
.sunya-mega-has-children > .sunya-mega__collection-title::after {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    margin-left: 6px;
    vertical-align: middle;
    transition: transform var(--sunya-transition-fast);
}


/* --------------------------------------------------------------------------
   LIVELLO 4 — Variante (es: OI Castagna, OI Malachite)
   
   Desktop: visibile di default, compatto
   Alternativa espandibile: decommentare il blocco "COLLAPSIBLE" sotto
   -------------------------------------------------------------------------- */

.sunya-mega__sub--level-4 {
    list-style: none;
    margin: 0;
    padding: 0;
    padding-left: var(--sunya-spacing-md);
}

.sunya-mega__variant-link {
    display: block;
    padding: 1px 0 1px var(--sunya-spacing-sm);
    color: var(--sunya-color-text-light);
    font-size: 0.8125rem; /* 13px */
    text-decoration: none;
    transition: color var(--sunya-transition-fast);
    line-height: 1.5;
}

.sunya-mega__variant-link:hover {
    color: var(--sunya-color-accent);
}


/* --------------------------------------------------------------------------
   LIVELLO 4 — COLLAPSIBLE (opzionale)

   Decommentare questo blocco per rendere le varianti espandibili al hover.
   Utile quando le collezioni hanno molte varianti (come Ginori con 13 colori).
   -------------------------------------------------------------------------- */

/*
.sunya-mega__sub--level-4 {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.sunya-mega-has-children:hover > .sunya-mega__sub--level-4 {
    max-height: 500px;
    opacity: 1;
}

.sunya-mega-has-children:hover > .sunya-mega__collection-title::after {
    transform: rotate(-135deg);
}
*/


/* --------------------------------------------------------------------------
   Contatore prodotti
   -------------------------------------------------------------------------- */

.sunya-mega__count {
    font-size: 0.75em;
    color: var(--sunya-color-text-light);
    font-weight: var(--sunya-font-weight-normal);
    opacity: 0.7;
}


/* --------------------------------------------------------------------------
   Colonna feature (prodotto/brand in evidenza)
   -------------------------------------------------------------------------- */

.sunya-mega__feature {
    width: 280px;
    flex-shrink: 0;
    background-color: var(--sunya-color-bg-alt);
    border-radius: var(--sunya-radius-lg);
    overflow: hidden;
    align-self: start;
}

.sunya-mega__feature-link {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--sunya-color-text);
    transition: box-shadow var(--sunya-transition-base);
}

.sunya-mega__feature-link:hover {
    box-shadow: var(--sunya-shadow-md);
}

.sunya-mega__feature-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.sunya-mega__feature-title {
    padding: var(--sunya-spacing-md);
    font-weight: var(--sunya-font-weight-medium);
    font-size: var(--sunya-font-size-base);
}

.sunya-mega__feature-price {
    padding: 0 var(--sunya-spacing-md) var(--sunya-spacing-md);
    font-weight: var(--sunya-font-weight-bold);
    color: var(--sunya-color-accent);
}


/* --------------------------------------------------------------------------
   Focus visibile per accessibilità dentro il mega menu
   -------------------------------------------------------------------------- */

.sunya-mega__panel a:focus-visible {
    outline: 2px solid var(--sunya-color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}


/* --------------------------------------------------------------------------
   Mega menu mobile
   -------------------------------------------------------------------------- */

@media screen and (max-width: 1024px) {

    .sunya-mega-item > .sunya-mega__panel {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        display: none;
        background: transparent;
        max-height: none;
    }

    .sunya-mega-item.sunya-sub--open > .sunya-mega__panel {
        display: block;
    }

    .sunya-mega__inner {
        flex-direction: column;
        gap: 0;
        padding: var(--sunya-spacing-sm) 0;
        max-height: none;
        overflow: visible;
    }

    .sunya-mega__columns {
        grid-template-columns: 1fr;
        gap: 0;
    }

    /* Livello 1 — colonna */
    .sunya-mega__column-title {
        border-bottom: 1px solid var(--sunya-color-border);
        text-transform: none;
        letter-spacing: 0;
        font-size: var(--sunya-font-size-sm);
        padding: var(--sunya-spacing-sm) 0 var(--sunya-spacing-sm) var(--sunya-spacing-lg);
        margin-bottom: 0;
    }

    /* Livello 2 — brand */
    .sunya-mega__sub--level-2 {
        padding-left: var(--sunya-spacing-md);
    }

    .sunya-mega__sub--level-2 > li {
        margin-bottom: 0;
    }

    .sunya-mega__brand-title {
        padding: var(--sunya-spacing-sm) 0 var(--sunya-spacing-sm) var(--sunya-spacing-lg);
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    /* Livello 3 — collezione */
    .sunya-mega__sub--level-3 {
        padding-left: var(--sunya-spacing-lg);
        border-left: none;
    }

    .sunya-mega__collection-title {
        padding: var(--sunya-spacing-xs) 0 var(--sunya-spacing-xs) var(--sunya-spacing-lg);
    }

    /* Livello 4 — variante (sempre visibile su mobile) */
    .sunya-mega__sub--level-4 {
        padding-left: var(--sunya-spacing-2xl);
        max-height: none !important;
        opacity: 1 !important;
    }

    .sunya-mega__variant-link {
        padding: var(--sunya-spacing-xs) 0 var(--sunya-spacing-xs) var(--sunya-spacing-md);
    }

    /* Toggle sottomenu anche per voci mega auto-generate */
    .sunya-mega-has-children {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }

    .sunya-mega-has-children > a {
        flex: 1;
    }

    .sunya-mega-has-children > .sub-menu,
    .sunya-mega-has-children > [class*="sunya-mega__sub"] {
        width: 100%;
        display: none;
    }

    .sunya-mega-has-children.sunya-sub--open > .sub-menu,
    .sunya-mega-has-children.sunya-sub--open > [class*="sunya-mega__sub"] {
        display: block;
    }

    /* Feature nascosta su mobile */
    .sunya-mega__feature {
        display: none;
    }
}


/* --------------------------------------------------------------------------
   Reduced motion
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    .sunya-mega-item > .sunya-mega__panel {
        transition: none;
    }

    .sunya-mega__sub--level-4 {
        transition: none;
    }
}