/* =============================================
   Younxin Category Navigation — Three-Level Flyout
   Colors: #0E1E3F / #143A7B / #1E5BB8 / #F26B2C
   ============================================= */

.scn-nav {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    width: 100%;
    max-width: 320px;
    position: relative;
    overflow: visible;
}

/* --- Header --- */
.scn-nav__header {
    background: #F26B2C;
    color: #fff;
    padding: 14px 20px;
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    border-radius: 6px 6px 0 0;
    letter-spacing: 0.3px;
}
.scn-nav__icon {
    display: flex;
    align-items: center;
}

/* --- L1 List (left sidebar) --- */
.scn-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.scn-nav__list--l1 {
    background: #0E1E3F;
    border-radius: 0 0 6px 6px;
}

/* --- L1 Item --- */
.scn-nav__item--l1 {
    position: relative;
}
.scn-nav__item--l1:last-child {
    border-radius: 0 0 6px 6px;
}

.scn-nav__link--l1 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    color: #c8d6e5;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}
.scn-nav__link--l1:hover,
.scn-nav__item--l1.scn-active > .scn-nav__link--l1 {
    background: #143A7B;
    color: #fff;
    border-left-color: #F26B2C;
}
.scn-nav__link--l1 .scn-nav__arrow {
    opacity: 0.6;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.scn-nav__item--l1:hover > .scn-nav__link--l1 .scn-nav__arrow,
.scn-nav__item--l1.scn-active > .scn-nav__link--l1 .scn-nav__arrow {
    opacity: 1;
    transform: translateX(2px);
}

/* --- L2 Flyout --- */
.scn-nav__flyout--l2 {
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 280px;
    background: #143A7B;
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: all 0.25s ease;
}
.scn-nav__item--l1:hover > .scn-nav__flyout--l2,
.scn-nav__item--l1.scn-active > .scn-nav__flyout--l2 {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* --- L2 Item --- */
.scn-nav__item--l2 {
    position: relative;
}
.scn-nav__link--l2 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px;
    color: #b8c9e0;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}
.scn-nav__link--l2:hover,
.scn-nav__item--l2.scn-active > .scn-nav__link--l2 {
    background: #1E5BB8;
    color: #fff;
    border-left-color: #F26B2C;
}
.scn-nav__link--l2 .scn-nav__arrow {
    opacity: 0.5;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.scn-nav__item--l2:hover > .scn-nav__link--l2 .scn-nav__arrow,
.scn-nav__item--l2.scn-active > .scn-nav__link--l2 .scn-nav__arrow {
    opacity: 1;
    transform: translateX(2px);
}

/* --- L3 Flyout --- */
.scn-nav__flyout--l3 {
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 240px;
    background: #1E5BB8;
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    z-index: 110;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: all 0.25s ease;
}
.scn-nav__item--l2:hover > .scn-nav__flyout--l3,
.scn-nav__item--l2.scn-active > .scn-nav__flyout--l3 {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* --- L3 Item --- */
.scn-nav__link--l3 {
    display: block;
    padding: 9px 18px;
    color: #b8d4f0;
    font-size: 13px;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s ease;
}
.scn-nav__link--l3:hover {
    background: #2A6FCC;
    color: #fff;
    padding-left: 22px;
}

/* --- Flyout header (mobile back button, hidden on desktop) --- */
.scn-nav__flyout-header {
    display: none;
}

/* =============================================
   MOBILE — Accordion mode (≤768px)
   ============================================= */
@media (max-width: 768px) {
    .scn-nav {
        max-width: 100%;
    }

    .scn-nav__header {
        border-radius: 6px;
        cursor: pointer;
        user-select: none;
    }
    .scn-nav__header.scn-open {
        border-radius: 6px 6px 0 0;
    }

    .scn-nav__list--l1 {
        border-radius: 0 0 6px 6px;
        display: none;
    }
    .scn-nav__header.scn-open + .scn-nav__list--l1 {
        display: block;
    }

    /* Reset flyout positioning for mobile */
    .scn-nav__flyout--l2,
    .scn-nav__flyout--l3 {
        position: static;
        min-width: 100%;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        transition: none;
    }

    /* Show flyout when parent is active on mobile */
    .scn-nav__item--l1.scn-active > .scn-nav__flyout--l2 {
        display: block;
    }
    .scn-nav__item--l2.scn-active > .scn-nav__flyout--l3 {
        display: block;
    }

    /* Show back button on mobile */
    .scn-nav__flyout-header {
        display: block;
        padding: 10px 14px;
        background: rgba(0,0,0,0.15);
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .scn-nav__back {
        background: none;
        border: none;
        color: #fff;
        font-size: 13px;
        font-weight: 500;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 0;
        font-family: inherit;
    }
    .scn-nav__back svg {
        transform: rotate(180deg);
    }

    /* Mobile link tweaks */
    .scn-nav__link--l1 {
        padding: 12px 16px;
    }
    .scn-nav__link--l2 {
        padding: 10px 16px 10px 24px;
    }
    .scn-nav__link--l3 {
        padding: 8px 16px 8px 32px;
    }
}

/* --- Scrollbar for long lists --- */
.scn-nav__flyout-inner {
    max-height: 80vh;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.2) transparent;
}
.scn-nav__flyout-inner::-webkit-scrollbar {
    width: 4px;
}
.scn-nav__flyout-inner::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
}

/* --- Desktop hover fix: keep parent highlighted when hovering children --- */
.scn-nav__item--l1:hover > .scn-nav__link--l1,
.scn-nav__flyout--l2:hover ~ .scn-nav__link--l1 {
    background: #143A7B;
    color: #fff;
    border-left-color: #F26B2C;
}