/* ==========================================================================
   AGE-TGI-2S3 + QEC — Megamenu Styles
   ========================================================================== */

/* ── Desktop Navigation ─────────────────────────────────────────────────── */
.megamenu {
    display: flex;
    align-items: center;
}

.megamenu__list {
    display: flex;
    align-items: center;
    gap: 0;
}

.megamenu__item {
    position: relative;
}

.megamenu__item > a {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    font-family: var(--f-heading);
    font-size: 0.88rem;
    font-weight: var(--fw-medium);
    color: var(--c-text-muted);
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--radius-sm);
    transition: color var(--duration-fast), background var(--duration-fast);
}

.megamenu__item > a:hover,
.megamenu__item.is-active > a {
    color: var(--c-text-bright);
    background: var(--c-surface);
}

.megamenu__item.is-active > a {
    color: var(--c-primary);
}

.menu-icon {
    font-size: 0.9rem;
    opacity: 0.7;
}

.dropdown-arrow {
    font-size: 0.55rem;
    transition: transform var(--duration-fast);
}

/* ── Dropdown ───────────────────────────────────────────────────────────── */
.megamenu__dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 800px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
        opacity var(--duration-base) var(--ease-out),
        transform var(--duration-base) var(--ease-out),
        visibility var(--duration-base);
    z-index: var(--z-megamenu);
    padding-top: var(--sp-sm);
}

.megamenu__item--has-dropdown:hover .megamenu__dropdown,
.megamenu__item--has-dropdown.is-open .megamenu__dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.megamenu__dropdown-inner {
    background: var(--c-bg-glass);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: var(--sp-xl);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: var(--sp-xl);
    position: relative;
    overflow: hidden;
}

/* Top gradient border on dropdown */
.megamenu__dropdown-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), var(--c-accent));
}

.megamenu__heading {
    font-family: var(--f-heading);
    font-size: 0.75rem;
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--c-primary);
    margin-bottom: var(--sp-md);
    padding-bottom: var(--sp-sm);
    border-bottom: 1px solid var(--c-border);
}

.megamenu__sublist li {
    margin-bottom: var(--sp-xs);
}

.megamenu__sublist a {
    display: block;
    font-size: 0.85rem;
    color: var(--c-text-muted);
    padding: var(--sp-xs) var(--sp-sm);
    border-radius: var(--radius-sm);
    transition: color var(--duration-fast), background var(--duration-fast), padding-left var(--duration-fast);
}

.megamenu__sublist a:hover {
    color: var(--c-text-bright);
    background: var(--c-surface);
    padding-left: var(--sp-md);
}

/* Featured column */
.megamenu__col--featured {
    background: var(--c-surface);
    border-radius: var(--radius-md);
    padding: var(--sp-lg);
    border: 1px solid var(--c-border);
}

.megamenu__card {
    margin-top: var(--sp-sm);
}

.megamenu__card-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: var(--sp-sm);
}

.megamenu__card p {
    font-size: 0.85rem;
    color: var(--c-text-muted);
    margin-bottom: var(--sp-md);
}

.megamenu__card-link {
    font-size: 0.8rem;
    font-weight: var(--fw-semibold);
    color: var(--c-primary);
    transition: color var(--duration-fast);
}

.megamenu__card-link:hover {
    color: var(--c-text-bright);
}

/* Arrow rotation on hover/open */
.megamenu__item--has-dropdown:hover .dropdown-arrow,
.megamenu__item--has-dropdown.is-open .dropdown-arrow {
    transform: rotate(180deg);
}


/* ── Overlay (mobile) ───────────────────────────────────────────────────── */
.megamenu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-base), visibility var(--duration-base);
}

.megamenu-overlay.is-active {
    opacity: 1;
    visibility: visible;
}


/* ── Mobile (<768px) ────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .megamenu {
        position: fixed;
        top: 0;
        right: 0;
        width: 85%;
        max-width: 360px;
        height: 100vh;
        height: 100dvh;
        background: var(--c-bg-alt);
        z-index: var(--z-megamenu);
        transform: translateX(100%);
        transition: transform var(--duration-slow) var(--ease-out);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: var(--sp-3xl) var(--sp-lg) var(--sp-xl);
        border-left: 1px solid var(--c-border);
    }

    .megamenu.is-open {
        transform: translateX(0);
    }

    .megamenu__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .megamenu__item > a {
        padding: var(--sp-md) var(--sp-sm);
        font-size: 1rem;
        border-bottom: 1px solid var(--c-border);
        border-radius: 0;
    }

    /* Dropdown becomes accordion */
    .megamenu__dropdown {
        position: static;
        transform: none;
        min-width: 0;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        padding-top: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--duration-slow) var(--ease-in-out);
    }

    .megamenu__item--has-dropdown.is-open .megamenu__dropdown {
        max-height: 600px;
    }

    .megamenu__dropdown-inner {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: var(--c-bg);
        border: none;
        box-shadow: none;
        border-radius: 0;
        padding: var(--sp-md);
        grid-template-columns: 1fr;
        gap: var(--sp-md);
    }

    .megamenu__dropdown-inner::before {
        display: none;
    }

    .megamenu__col--featured {
        background: var(--c-surface);
    }

    /* Hamburger active state (X) */
    .hamburger.is-active .hamburger__line:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .hamburger.is-active .hamburger__line:nth-child(2) {
        opacity: 0;
    }

    .hamburger.is-active .hamburger__line:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}