/* =============================================================
   site-navbar.css  --  Unified Navbar Styles
   Self-contained. No Bootstrap dependency.
   All classes prefixed with site-navbar__ to avoid collisions.
   ============================================================= */

/* ---------- CSS Variables (defaults = light theme) ---------- */
.site-navbar {
    --sn-bg: #ffffff;
    --sn-text: #333333;
    --sn-text-hover: #000000;
    --sn-text-active: #000000;
    --sn-dropdown-bg: #ffffff;
    --sn-dropdown-text: #444444;
    --sn-dropdown-text-hover: #000000;
    --sn-dropdown-border: rgba(0, 0, 0, 0.08);
    --sn-dropdown-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    --sn-font-family: inherit;
    --sn-font-size: 16px;
    --sn-font-weight: 500;
    --sn-text-transform: none;
    --sn-letter-spacing: 0;
    --sn-link-padding: 12px 16px;
    --sn-logo-height: 60px;
    --sn-height: 70px;
    --sn-position: relative;
    --sn-top: 0;
    --sn-z-index: 1000;
    --sn-shadow: none;
    --sn-border-bottom: none;
    --sn-max-width: 1200px;
    --sn-hover-underline: 0;
    --sn-hover-underline-color: currentColor;
    --sn-transition: 0.25s ease;
    --sn-mobile-bg: #ffffff;
    --sn-mobile-overlay-bg: rgba(33, 37, 41, 0.85);
    --sn-mobile-text: #333333;
    --sn-hamburger-color: #333333;
    --sn-arrow-color: currentColor;
    --sn-dropdown-item-hover-bg: rgba(0, 0, 0, 0.04);
}

/* ---------- Reset & Base ---------- */
.site-navbar,
.site-navbar *,
.site-navbar *::before,
.site-navbar *::after {
    box-sizing: border-box;
}

.site-navbar {
    position: var(--sn-position);
    top: var(--sn-top);
    left: 0;
    right: 0;
    z-index: var(--sn-z-index);
    background: var(--sn-bg);
    box-shadow: var(--sn-shadow);
    border-bottom: var(--sn-border-bottom);
    font-family: var(--sn-font-family);
    font-size: var(--sn-font-size);
    font-weight: var(--sn-font-weight);
    text-transform: var(--sn-text-transform);
    letter-spacing: var(--sn-letter-spacing);
    height: var(--sn-height);
    margin: 0;
    padding: 0;
}

.site-navbar__inner {
    max-width: var(--sn-max-width);
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    transition: max-width 0.5s;
}

/* ---------- Logo ---------- */
.site-navbar__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.site-navbar__logo-img {
    height: var(--sn-logo-height);
    width: auto;
    max-width: 200px;
}

/* ---------- Hamburger (hidden on desktop) ---------- */
.site-navbar__toggle {
    display: none;
}

/* =============================================
   DESKTOP (>= 992px)
   ============================================= */
@media (min-width: 992px) {
    .site-navbar__nav {
        display: flex;
        align-items: center;
        height: 100%;
    }

    .site-navbar__menu {
        list-style: none;
        display: flex;
        align-items: center;
        margin: 0;
        padding: 0;
        height: 100%;
    }

    .site-navbar__item {
        position: relative;
        height: 100%;
        display: flex;
        align-items: center;
    }

    /* Nav links */
    .site-navbar__link {
        display: flex;
        align-items: center;
        padding: var(--sn-link-padding);
        color: var(--sn-text);
        text-decoration: none;
        white-space: nowrap;
        transition: color var(--sn-transition);
        position: relative;
        gap: 6px;
    }

    .site-navbar__link:hover {
        color: var(--sn-text-hover);
    }

    .site-navbar__link--active {
        color: var(--sn-text-active);
        font-weight: 600;
    }

    /* Hover underline (opt-in via --sn-hover-underline) */
    .site-navbar__menu > .site-navbar__item > .site-navbar__link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: var(--sn-hover-underline);
        background: var(--sn-hover-underline-color);
        transition: width var(--sn-transition);
    }

    .site-navbar__menu > .site-navbar__item > .site-navbar__link:hover::after,
    .site-navbar__menu > .site-navbar__item > .site-navbar__link--active::after {
        width: 80%;
    }

    /* Arrow indicator (CSS-only chevron) */
    .site-navbar__arrow {
        display: inline-block;
        width: 7px;
        height: 7px;
        border-right: 1.5px solid var(--sn-arrow-color);
        border-bottom: 1.5px solid var(--sn-arrow-color);
        transform: rotate(45deg);
        transition: transform 0.2s;
        position: relative;
        top: -1px;
        flex-shrink: 0;
    }

    .site-navbar__item--open > .site-navbar__link > .site-navbar__arrow {
        transform: rotate(-135deg);
        top: 1px;
    }

    /* Sub-dropdown arrow: points right instead of down */
    .site-navbar__dropdown .site-navbar__arrow {
        transform: rotate(-45deg);
        width: 6px;
        height: 6px;
    }

    .site-navbar__dropdown .site-navbar__item--open > .site-navbar__link > .site-navbar__arrow {
        transform: rotate(135deg);
    }

    /* ---------- Dropdown (desktop) ---------- */
    .site-navbar__dropdown {
        list-style: none;
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 200px;
        background: var(--sn-dropdown-bg);
        border: 1px solid var(--sn-dropdown-border);
        box-shadow: var(--sn-dropdown-shadow);
        border-radius: 4px;
        padding: 8px 0;
        margin: 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(6px);
        transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
        z-index: 100;
    }

    /* Show on hover or when JS adds --open */
    .site-navbar__item--dropdown:hover > .site-navbar__dropdown,
    .site-navbar__item--open > .site-navbar__dropdown {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    /* Sub-dropdown: fly out to right */
    .site-navbar__dropdown .site-navbar__dropdown {
        top: -8px;
        left: 100%;
    }

    /* Flip left if overflowing right edge (JS adds this class) */
    .site-navbar__dropdown--flip {
        left: auto !important;
        right: 100%;
    }

    /* Dropdown items */
    .site-navbar__dropdown .site-navbar__item {
        height: auto;
        display: block;
    }

    .site-navbar__dropdown .site-navbar__link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 8px 20px;
        color: var(--sn-dropdown-text);
        text-decoration: none;
        white-space: nowrap;
        transition: background var(--sn-transition), color var(--sn-transition);
        height: auto;
        gap: 12px;
    }

    .site-navbar__dropdown .site-navbar__link:hover {
        background: var(--sn-dropdown-item-hover-bg);
        color: var(--sn-dropdown-text-hover);
    }

    /* Remove underline effect from dropdown links */
    .site-navbar__dropdown .site-navbar__link::after {
        display: none;
    }
}

/* =============================================
   MOBILE (< 992px)
   ============================================= */
@media (max-width: 991.98px) {
    .site-navbar {
        height: auto;
        min-height: var(--sn-height);
        padding: 0;
    }

    .site-navbar__inner {
        flex-wrap: wrap;
        min-height: var(--sn-height);
    }

    /* Hamburger button */
    .site-navbar__toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 30px;
        height: 30px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 1001;
        position: relative;
    }

    .site-navbar__toggle-bar {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--sn-hamburger-color);
        border-radius: 2px;
        transition: transform 0.3s, opacity 0.3s;
        transform-origin: center;
    }

    /* Hamburger → X animation */
    .site-navbar--open .site-navbar__toggle-bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .site-navbar--open .site-navbar__toggle-bar:nth-child(2) {
        opacity: 0;
    }
    .site-navbar--open .site-navbar__toggle-bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* Nav body — slide style (default) */
    .site-navbar__nav {
        display: none;
        width: 100%;
        order: 3;
        background: var(--sn-mobile-bg);
        border-top: 1px solid var(--sn-dropdown-border);
    }

    .site-navbar--open .site-navbar__nav {
        display: block;
    }

    /* Overlay style (layout_3) */
    .site-navbar[data-mobile-style="overlay"] .site-navbar__nav {
        position: fixed;
        inset: 0;
        z-index: 9998;
        background: var(--sn-mobile-overlay-bg);
        border-top: none;
        padding-top: 70px;
        overflow-y: auto;
        display: none;
    }

    .site-navbar--open[data-mobile-style="overlay"] .site-navbar__nav {
        display: block;
    }

    .site-navbar[data-mobile-style="overlay"] .site-navbar__toggle {
        z-index: 9999;
    }

    .site-navbar--open[data-mobile-style="overlay"] .site-navbar__toggle-bar {
        background: #fff;
    }

    /* Menu list */
    .site-navbar__menu {
        list-style: none;
        margin: 0;
        padding: 8px 0;
    }

    .site-navbar__item {
        border-bottom: 1px solid var(--sn-dropdown-border);
    }

    .site-navbar__item:last-child {
        border-bottom: none;
    }

    /* Nav links */
    .site-navbar__link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 12px 20px;
        color: var(--sn-mobile-text);
        text-decoration: none;
        font-size: var(--sn-font-size);
        transition: background 0.2s;
    }

    .site-navbar__link:hover,
    .site-navbar__link:active {
        background: var(--sn-dropdown-item-hover-bg);
    }

    .site-navbar__link--active {
        font-weight: 600;
    }

    /* Arrow indicator */
    .site-navbar__arrow {
        display: inline-block;
        width: 8px;
        height: 8px;
        border-right: 2px solid var(--sn-arrow-color);
        border-bottom: 2px solid var(--sn-arrow-color);
        transform: rotate(45deg);
        transition: transform 0.25s;
        flex-shrink: 0;
        margin-left: auto;
    }

    .site-navbar__item--open > .site-navbar__link > .site-navbar__arrow {
        transform: rotate(-135deg);
    }

    /* Mobile dropdowns: inline expand with indent */
    .site-navbar__dropdown {
        list-style: none;
        display: none;
        padding: 0 0 0 0;
        margin: 0 0 0 16px;
        border-left: 2px solid var(--sn-dropdown-border);
    }

    .site-navbar__item--open > .site-navbar__dropdown {
        display: block;
    }

    .site-navbar__dropdown .site-navbar__link {
        padding: 10px 16px;
        color: var(--sn-dropdown-text);
        font-size: calc(var(--sn-font-size) - 1px);
    }

    .site-navbar__dropdown .site-navbar__dropdown {
        margin-left: 12px;
    }
}