.gsmpartsstore-category-mega-menu-overlay {
    position: fixed;
    z-index: 19;
    inset: 0;
    visibility: hidden;
    opacity: 0;
    background: rgba(16, 28, 20, 0.34);
    pointer-events: none;
    transition: opacity 180ms ease, visibility 180ms ease;
}

.gsmpartsstore-category-mega-menu-overlay.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.gsmpartsstore-category-mega-menu {
    position: absolute;
    z-index: 25;
    top: 100%;
    right: 0;
    left: 0;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
}

.gsmpartsstore-category-mega-menu.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.gsmpartsstore-category-mega-menu__panel {
    border: 1px solid var(--gsmpartsstore-color-border, #e5e7e6);
    border-top: 0;
    border-radius: 0 0 10px 10px;
    background: var(--gsmpartsstore-color-surface, #ffffff);
    box-shadow: 0 18px 42px rgba(23, 33, 27, 0.16);
    overflow: hidden;
}

.gsmpartsstore-category-mega-menu__columns {
    display: flex;
    width: 100%;
    min-width: 0;
}

.gsmpartsstore-category-mega-menu__column {
    min-width: 0;
    max-height: min(560px, calc(100vh - 220px));
    flex: 1 1 0;
    padding: 22px 20px 24px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.gsmpartsstore-category-mega-menu__column[hidden] {
    display: none;
}

.gsmpartsstore-category-mega-menu__column + .gsmpartsstore-category-mega-menu__column {
    border-left: 1px solid var(--gsmpartsstore-color-border, #e5e7e6);
}

.gsmpartsstore-category-mega-menu__column-content {
    display: flex;
    min-height: 100%;
    flex-direction: column;
}

.gsmpartsstore-category-mega-menu__column-title {
    margin: 0 0 12px;
    color: var(--gsmpartsstore-color-muted, #68736c);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.07em;
    line-height: 1.35;
    text-transform: uppercase;
    overflow-wrap: anywhere;
}

.gsmpartsstore-category-mega-menu__list {
    display: grid;
    gap: 4px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.gsmpartsstore-category-mega-menu__category {
    display: flex;
    width: 100%;
    min-width: 0;
    min-height: 42px;
    padding: 9px 11px;
    border: 0;
    border-radius: 7px;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    color: var(--gsmpartsstore-color-text, #17211b);
    background: transparent;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 650;
    line-height: 1.35;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    transition: color 160ms ease, background-color 160ms ease;
}

.gsmpartsstore-category-mega-menu__category > span:first-child {
    min-width: 0;
    overflow-wrap: anywhere;
}

.gsmpartsstore-category-mega-menu__category:hover,
.gsmpartsstore-category-mega-menu__category:focus-visible,
.gsmpartsstore-category-mega-menu__category.is-active,
.gsmpartsstore-category-mega-menu__category.is-current {
    color: var(--gsmpartsstore-color-accent, #178447);
    background: var(--gsmpartsstore-color-surface-soft, #f5f8f6);
}

.gsmpartsstore-category-mega-menu__category:focus-visible,
.gsmpartsstore-category-mega-menu__view-all:focus-visible {
    outline: 3px solid rgba(23, 132, 71, 0.24);
    outline-offset: 1px;
}

.gsmpartsstore-category-mega-menu__chevron {
    width: 8px;
    height: 8px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    flex: 0 0 auto;
    transform: rotate(45deg);
}

.gsmpartsstore-category-mega-menu__view-all {
    display: block;
    margin-top: 20px;
    padding: 16px 11px 2px;
    border-top: 1px solid var(--gsmpartsstore-color-border, #e5e7e6);
    color: var(--gsmpartsstore-color-accent, #178447);
    font-size: 0.84rem;
    font-weight: 750;
    line-height: 1.45;
    text-decoration: none;
    overflow-wrap: anywhere;
}

.gsmpartsstore-category-mega-menu__view-all:hover {
    color: var(--gsmpartsstore-color-accent-dark, #116b39);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.gsmpartsstore-categories-button[aria-expanded="true"] {
    background: var(--gsmpartsstore-color-accent-dark, #116b39);
    box-shadow: 0 0 0 3px rgba(23, 132, 71, 0.14);
}

@media (min-width: 768px) and (max-width: 1023px) {
    .gsmpartsstore-category-mega-menu__column {
        max-height: min(480px, calc(100vh - 250px));
        padding: 18px 16px 20px;
    }

    .gsmpartsstore-category-mega-menu__category {
        padding-inline: 9px;
        font-size: 0.86rem;
    }
}

@media (max-width: 767px) {
    .gsmpartsstore-category-mega-menu,
    .gsmpartsstore-category-mega-menu-overlay {
        display: none !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .gsmpartsstore-category-mega-menu,
    .gsmpartsstore-category-mega-menu-overlay {
        transition-duration: 1ms;
    }
}