/* ============================================================
   SITE HEADER — базовые стили
   ============================================================ */
.site-header__logo {
    color: #fff;
    text-decoration: none;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* ============================================================
   NAV — строка меню
   ============================================================ */
.site-nav__list {
    list-style: none;
    margin: 0;
    padding: 4px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    gap: 0;
}

.site-nav__item {
    position: static;   /* mega-menu позиционируется от header */
    display: flex;
    align-items: center;
}

.site-nav__link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    color: rgba(255,255,255,0.92);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
    border-radius: 3px;
    transition: color 0.18s, background 0.18s;
    position: relative;
}

.site-nav__link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: #2A9DDD;
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 0.22s cubic-bezier(.4,0,.2,1);
}

.site-nav__item:hover > .site-nav__link,
.site-nav__item:focus-within > .site-nav__link {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.site-nav__item:hover > .site-nav__link::after,
.site-nav__item:focus-within > .site-nav__link::after {
    transform: scaleX(1);
}

/* Стрелка в ссылке */
.site-nav__arrow {
    width: 11px;
    height: 8px;
    flex-shrink: 0;
    transition: transform 0.22s cubic-bezier(.4,0,.2,1);
    opacity: 0.7;
}

.site-nav__item:hover > .site-nav__link .site-nav__arrow,
.site-nav__item:focus-within > .site-nav__link .site-nav__arrow,
.site-nav__item.is-open > .site-nav__link .site-nav__arrow {
    transform: rotate(180deg);
    opacity: 1;
}

/* ============================================================
   MEGA MENU
   ============================================================ */

/* Невидимый мост: заполняет зазор между nav-ссылкой и панелью
   чтобы мышь не покидала область при переходе вниз */
.site-nav__item--has-mega > .site-nav__link::before {
    content: '';
    position: absolute;
    bottom: -12px;   /* перекрывает зазор */
    left: 0;
    right: 0;
    height: 14px;
    background: transparent;
    display: none;
}
.site-nav__item--has-mega.is-open > .site-nav__link::before {
    display: block;
}

.mega-menu {
    /* Используем visibility/opacity вместо display:
       элемент остаётся в DOM → мышь не теряет hover */
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: #ffffff;
    border-top: 3px solid #2A9DDD;
    box-shadow: 0 16px 48px rgba(0,0,0,0.18), 0 2px 8px rgba(0,0,0,0.08);
    z-index: 9999;
    transition: opacity 0.18s cubic-bezier(.4,0,.2,1),
                visibility 0.18s,
                transform 0.18s cubic-bezier(.4,0,.2,1);
    transform: translateY(-6px);
}

.site-nav__item--has-mega.is-open > .mega-menu {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

@keyframes megaFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Чтобы mega-menu растянулась на ширину header'а —
   header должен быть position:relative */
.site-header {
    position: relative;
}

.mega-menu__inner {
    padding: 28px 32px 32px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Заголовок мега-меню */
.mega-menu__header {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid #e8edf3;
}

.mega-menu__title {
    font-size: 17px;
    font-weight: 700;
    color: #0d1e31;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: color 0.15s;
}

.mega-menu__title:hover {
    color: #2A9DDD;
}

.mega-menu__subtitle {
    font-size: 12px;
    color: #9aabb8;
    font-weight: 400;
    letter-spacing: 0.03em;
}

/* Колонки подкатегорий */
.mega-menu__columns {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px 28px;
}

/* Заголовок колонки (подкатегория 1-го уровня) */
.mega-menu__col-title {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: #1a2e44;
    text-decoration: none;
    padding: 6px 0 8px;
    border-bottom: 2px solid #e8edf3;
    margin-bottom: 6px;
    letter-spacing: 0.02em;
    transition: color 0.15s, border-color 0.15s;
}

.mega-menu__col-title:hover {
    color: #2A9DDD;
    border-bottom-color: #2A9DDD;
}

/* Список подподкатегорий */
.mega-menu__sublist {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mega-menu__sublink {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 5px 0;
    font-size: 13px;
    color: #4a6070;
    text-decoration: none;
    transition: color 0.15s, padding-left 0.15s;
    line-height: 1.4;
}

.mega-menu__sublink:hover {
    color: #2A9DDD;
    padding-left: 4px;
}

.mega-menu__sublink-arrow {
    width: 5px;
    height: 9px;
    flex-shrink: 0;
    color: #2A9DDD;
    opacity: 0;
    transition: opacity 0.15s;
}

.mega-menu__sublink:hover .mega-menu__sublink-arrow {
    opacity: 1;
}

/* Если нет подподкатегорий — col-title без колонки*/
.mega-menu__col:only-child .mega-menu__col-title,
.mega-menu__col--no-sub .mega-menu__col-title {
    border-bottom-color: transparent;
    padding-bottom: 0;
    margin-bottom: 0;
}

/* ============================================================
   МОБИЛЬНЫЙ ВИД (до 992px)
   ============================================================ */
@media (max-width: 992px) {

    /* Скрываем mega-menu на мобильных — используем отдельную логику */
    .mega-menu {
        display: none !important;
        position: static;
        box-shadow: none;
        border-top: none;
        border-left: 3px solid #2A9DDD;
        animation: none;
        background: rgba(255,255,255,0.04);
    }

    .site-nav__item--has-mega.mobile-open > .mega-menu {
        display: block !important;
    }

    .mega-menu__inner {
        padding: 12px 16px 16px;
    }

    .mega-menu__header {
        margin-bottom: 12px;
        padding-bottom: 10px;
    }

    .mega-menu__title {
        font-size: 14px;
        color: rgba(255,255,255,0.9);
    }

    .mega-menu__subtitle {
        display: none;
    }

    .mega-menu__columns {
        grid-template-columns: 1fr;
        gap: 4px 0;
    }

    .mega-menu__col-title {
        color: rgba(255,255,255,0.8);
        border-bottom-color: rgba(255,255,255,0.1);
        font-size: 12px;
        padding: 4px 0 6px;
    }

    .mega-menu__col-title:hover {
        color: #2A9DDD;
        border-bottom-color: #2A9DDD;
    }

    .mega-menu__sublink {
        color: rgba(255,255,255,0.6);
        padding: 4px 0 4px 10px;
        font-size: 12px;
    }

    .mega-menu__sublink:hover {
        color: #2A9DDD;
        padding-left: 14px;
    }

    /* Стрелка в мобильном меню */
    .site-nav__item--has-mega.mobile-open > .site-nav__link .site-nav__arrow {
        transform: rotate(180deg);
        opacity: 1;
    }
}