/*
 * Mega menu desktop và tablet (≥768px) theo Claude Design (02/11/2026).
 * Mỗi panel có thêm khối .mega-dd (header.php, template-parts/*\/mega-menu.php); bố cục cũ ([class*="mega-menu-inner"])
 * chỉ còn dùng cho menu mobile. Panel là một thẻ trắng căn giữa theo mục menu: assets/js/main.js đặt --mega-left.
 */
.mega-dd {
    display: none;
}

@media (min-width: 768px) {
    .bambu-page .site-header .mega-menu-panel {
        top: calc(100% + 8px);
        right: auto;
        left: var(--mega-left, 0px);
        width: max-content;
        max-width: calc(100vw - 32px);
        margin: 0;
        padding: 0;
        border: 1px solid #e3e8f0;
        border-radius: 14px;
        background: #ffffff;
        box-shadow: 0 12px 32px rgba(11, 18, 32, 0.12);
    }

    /* Khoảng hở 8px giữa header và panel vẫn thuộc panel, để rê chuột xuống không làm menu đóng. */
    .bambu-page .site-header .mega-menu-panel::before {
        content: "";
        position: absolute;
        top: -10px;
        right: 0;
        left: 0;
        height: 10px;
    }

    .bambu-page .site-header .mega-menu-panel [class*="mega-menu-inner"] {
        display: none !important;
    }

    .bambu-page .site-header .mega-menu-panel .mega-dd {
        display: block;
        box-sizing: border-box;
        color: #0b1220;
        text-align: left;
    }

    .bambu-page .site-header .mega-dd a {
        color: #0b1220;
        text-decoration: none;
    }

    /* Dropdown 1 cột: About Us, Data & Report, Community. */
    .bambu-page .site-header .mega-dd-list {
        display: flex;
        flex-direction: column;
        gap: 2px;
        min-width: 180px;
        padding: 8px;
    }

    .bambu-page .site-header .mega-dd-list a {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 9px 14px;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 500;
        line-height: 22px;
        white-space: nowrap;
    }

    .bambu-page .site-header .mega-dd-list a:hover,
    .bambu-page .site-header .mega-dd-list a:focus-visible {
        background: #f4f6fa;
        color: #1e7a5c;
    }

    .bambu-page .site-header .mega-dd-arrow {
        color: #9aa1ad;
        font-size: 12px;
    }

    /* Mega menu nhiều cột: Innovation Hub, Challenge Hub, IP/Research Hub. */
    .bambu-page .site-header .mega-menu-panel .mega-dd-grid {
        display: grid;
        gap: 24px;
        max-width: 100%;
        padding: 24px;
    }

    .bambu-page .site-header .mega-dd-innovation {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        width: 760px;
    }

    .bambu-page .site-header .mega-dd-challenges {
        grid-template-columns: 1.25fr 1fr 1fr 1fr;
        width: 1080px;
    }

    .bambu-page .site-header .mega-dd-challenges.is-compact {
        grid-template-columns: 1fr;
        width: 420px;
    }

    .bambu-page .site-header .mega-dd-ip {
        grid-template-columns: 1.3fr 1fr 1fr;
        width: 1000px;
    }

    .bambu-page .site-header .mega-dd-col {
        display: flex;
        flex-direction: column;
        gap: 14px;
        min-width: 0;
    }

    .bambu-page .site-header .mega-dd-challenges .mega-dd-col + .mega-dd-col,
    .bambu-page .site-header .mega-dd-ip .mega-dd-col + .mega-dd-col {
        padding-left: 24px;
        border-left: 1px solid #e3e8f0;
    }

    .bambu-page .site-header .mega-dd-label {
        margin: 0;
        color: #5b6168;
        font-size: 12px;
        font-weight: 700;
        letter-spacing: 0.6px;
        line-height: 16px;
        text-transform: uppercase;
    }

    .bambu-page .site-header .mega-dd-card {
        display: flex;
        flex-direction: column;
        gap: 4px;
        padding: 12px 16px;
        border: 1px solid #e3e8f0;
        border-radius: 10px;
        background: #f4f6fa;
        transition: border-color 160ms ease;
    }

    .bambu-page .site-header .mega-dd-card.is-row {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
    }

    .bambu-page .site-header .mega-dd-card:hover,
    .bambu-page .site-header .mega-dd-card:focus-visible {
        border-color: #48a973;
    }

    .bambu-page .site-header .mega-dd-card strong {
        font-size: 16px;
        font-weight: 600;
        line-height: 22px;
    }

    .bambu-page .site-header .mega-dd-ip .mega-dd-card strong {
        font-size: 15px;
    }

    .bambu-page .site-header .mega-dd-card-link {
        color: #1e7a5c;
        font-size: 13px;
        font-weight: 600;
        line-height: 18px;
    }

    .bambu-page .site-header .mega-dd-count,
    .bambu-page .site-header .mega-dd-pill {
        flex: none;
        border-radius: 999px;
        background: #ddf5e8;
        color: #1e7a5c;
        font-weight: 700;
        white-space: nowrap;
    }

    .bambu-page .site-header .mega-dd-count {
        padding: 2px 10px;
        font-size: 13px;
        line-height: 18px;
    }

    .bambu-page .site-header .mega-dd-pill {
        padding: 2px 8px;
        font-size: 12px;
        line-height: 16px;
    }

    .bambu-page .site-header .mega-dd-tiles {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .bambu-page .site-header .mega-dd-item {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .bambu-page .site-header .mega-dd-item.is-top {
        align-items: flex-start;
    }

    .bambu-page .site-header .mega-dd-innovation .mega-dd-item {
        gap: 14px;
    }

    .bambu-page .site-header .mega-dd-logo,
    .bambu-page .site-header .mega-dd-thumb {
        display: flex;
        flex: none;
        overflow: hidden;
        background: #ffffff;
    }

    .bambu-page .site-header .mega-dd-logo {
        width: 44px;
        height: 44px;
        border: 1px solid #e3e8f0;
        border-radius: 10px;
    }

    .bambu-page .site-header .mega-dd-logo.is-wide {
        width: 52px;
        height: 52px;
        align-items: center;
        justify-content: center;
    }

    .bambu-page .site-header .mega-dd-thumb {
        width: 72px;
        height: 50px;
        border-radius: 8px;
        background: #e3e8f0;
    }

    .bambu-page .site-header .mega-dd-logo img,
    .bambu-page .site-header .mega-dd-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    /* Logo đơn vị: hiện trọn logo, không cắt. */
    .bambu-page .site-header .mega-dd-logo:not(.is-wide) img {
        box-sizing: border-box;
        padding: 4px;
        object-fit: contain;
    }

    .bambu-page .site-header .mega-dd-logo.is-wide img {
        width: 40px;
        height: 26px;
        object-fit: contain;
    }

    .bambu-page .site-header .mega-dd-item-text {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        min-width: 0;
    }

    .bambu-page .site-header .mega-dd-innovation .mega-dd-item-text {
        gap: 2px;
    }

    .bambu-page .site-header .mega-dd-item-text strong {
        display: -webkit-box;
        overflow: hidden;
        font-size: 15px;
        font-weight: 600;
        line-height: 21px;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        transition: color 160ms ease;
    }

    .bambu-page .site-header .mega-dd-item.is-top .mega-dd-item-text strong {
        -webkit-line-clamp: 3;
    }

    .bambu-page .site-header .mega-dd-innovation .mega-dd-item-text strong {
        font-size: 16px;
        line-height: 22px;
    }

    .bambu-page .site-header .mega-dd-item:hover strong,
    .bambu-page .site-header .mega-dd-item:focus-visible strong {
        color: #1e7a5c;
    }

    .bambu-page .site-header .mega-dd-item-text small {
        color: #6b7280;
        font-size: 13px;
        line-height: 18px;
    }

    .bambu-page .site-header .mega-dd-item-text small.is-open {
        color: #1e9e5a;
        font-weight: 600;
    }

    .bambu-page .site-header .mega-dd-item-text small.is-closed {
        font-weight: 600;
    }

    .bambu-page .site-header .mega-dd-more {
        margin-top: auto;
        padding-top: 4px;
        font-size: 14px;
        font-weight: 600;
        line-height: 20px;
    }

    .bambu-page .site-header .mega-dd-more:hover,
    .bambu-page .site-header .mega-dd-more:focus-visible {
        color: #1e7a5c;
    }

    .bambu-page .site-header .mega-dd-empty {
        margin: 0;
        padding: 12px 16px;
        border: 1px dashed #d4dce8;
        border-radius: 10px;
        color: #6b7280;
        font-size: 13px;
        line-height: 18px;
    }
}

/* Tablet (768–1199px): panel rộng co theo màn hình, khoảng cách nhỏ lại. */
@media (min-width: 768px) and (max-width: 1199px) {
    .bambu-page .site-header .mega-menu-panel .mega-dd-grid {
        gap: 16px;
        padding: 20px;
    }

    .bambu-page .site-header .mega-dd-challenges .mega-dd-col + .mega-dd-col,
    .bambu-page .site-header .mega-dd-ip .mega-dd-col + .mega-dd-col {
        padding-left: 16px;
    }

    .bambu-page .site-header .mega-dd-tiles {
        grid-template-columns: 1fr;
    }
}