/* =========================================================
   NAVBAR
   ========================================================= */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;

    height: var(--na-navbar-height);

    background: var(--na-color-navy);
    color: var(--na-color-white);
}


/* =========================================================
   NAVBAR INNER
   ========================================================= */

.navbar-inner {
    width: 100%;
    max-width: var(--na-content-width);
    height: 100%;

    margin: 0 auto;
    padding: 0 var(--na-content-padding);

    box-sizing: border-box;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-right {
    display: flex;
    align-items: center;

    gap: 16px;
}


/* =========================================================
   TOP-LEVEL LINKS
   ========================================================= */

.navbar .nav-left a,
.navbar .nav-right > a,
.navbar .nav-right .nav-dropdown-trigger {
    margin-left: 20px;

    color: var(--na-color-slate-200);

    font-size: 0.95rem;
    text-decoration: none;

    transition: color var(--na-transition-normal);
}

.navbar .nav-left a:hover,
.navbar .nav-right > a:hover,
.navbar .nav-right .nav-dropdown-trigger:hover {
    color: var(--na-color-blue-light);
}


/* =========================================================
   LOGO / BRAND
   ========================================================= */

.nav-left {
    display: flex;
    align-items: center;
}

.logo {
    display: inline-flex;
    align-items: center;

    gap: 10px;
    margin: 0;

    color: var(--na-color-white);

    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;

    white-space: nowrap;
}

.logo-icon {
    display: block;

    width: 40px;
    height: 40px;

    flex-shrink: 0;
}


/* =========================================================
   LANGUAGE SWITCH
   ========================================================= */

.nav-lang {
    position: relative;

    margin-left: 8px;
}

.nav-lang-trigger {
    min-width: 52px;
    height: 36px;

    padding: 0 12px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    gap: 8px;

    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: var(--na-radius-sm);

    background: transparent;
    color: var(--na-color-slate-200);

    font: inherit;
    font-size: 0.9rem;

    cursor: pointer;

    transition:
        color var(--na-transition-fast),
        border-color var(--na-transition-fast),
        background var(--na-transition-fast);
}

.nav-lang-trigger:hover,
.nav-lang-trigger:focus-visible {
    color: var(--na-color-white);
    border-color: rgba(148, 163, 184, 0.5);
    background: rgba(255, 255, 255, 0.05);
}

.nav-lang-trigger::after {
    content: "";

    width: 6px;
    height: 6px;

    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;

    transform: rotate(45deg) translateY(-2px);

    transition: transform var(--na-transition-fast);
}

.nav-lang.is-open .nav-lang-trigger::after {
    transform: rotate(225deg) translate(-1px, -1px);
}


/* =========================================================
   LANGUAGE MENU
   ========================================================= */

.nav-lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 1100;

    min-width: 76px;

    padding: 6px;

    display: grid;
    gap: 4px;

    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: var(--na-radius-sm);

    background: var(--na-color-navy-dark);

    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transform: translateY(-6px);

    transition:
        opacity var(--na-transition-fast),
        transform var(--na-transition-fast),
        visibility var(--na-transition-fast);
}

.nav-lang.is-open .nav-lang-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;

    transform: translateY(0);
}

.nav-lang-menu .btn-lang {
    width: 100%;

    padding: 8px 10px;

    border: 0;
    border-radius: 7px;

    background: transparent;
    color: var(--na-color-slate-200);

    font: inherit;
    font-size: 0.9rem;
    text-align: center;

    cursor: pointer;

    transition:
        color var(--na-transition-fast),
        background var(--na-transition-fast);
}

.nav-lang-menu .btn-lang:hover,
.nav-lang-menu .btn-lang:focus-visible {
    color: var(--na-color-white);
    background: rgba(255, 255, 255, 0.08);

    outline: none;
}

.nav-lang-menu .btn-lang.is-active {
    color: var(--na-color-white);
    background: rgba(255, 255, 255, 0.06);
}


/* =========================================================
   DROPDOWN
   ========================================================= */

.nav-dropdown {
    position: relative;

    display: inline-flex;
    align-items: center;
}

.nav-dropdown-trigger {
    position: relative;

    display: inline-flex;
    align-items: center;

    gap: 6px;
}

.nav-dropdown-trigger::after {
    content: "";

    width: 6px;
    height: 6px;

    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;

    opacity: 0;

    transform: rotate(45deg) translateY(-1px);
    transform-origin: center;

    transition:
        opacity var(--na-transition-fast),
        transform var(--na-transition-fast);
}

.nav-dropdown:hover .nav-dropdown-trigger::after,
.nav-dropdown:focus-within .nav-dropdown-trigger::after {
    opacity: 1;

    transform: rotate(45deg) translateY(0);
}


/* =========================================================
   DROPDOWN MENU
   ========================================================= */

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    z-index: 1100;

    min-width: 220px;

    padding: 10px;

    display: grid;
    gap: 6px;

    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: var(--na-radius-md);

    background: #0b1222;

    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);

    opacity: 0;
    pointer-events: none;

    transform: translateY(-6px);

    transition:
        opacity var(--na-transition-fast),
        transform var(--na-transition-fast);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
    opacity: 1;
    pointer-events: auto;

    transform: translateY(0);
}


/* =========================================================
   DROPDOWN LINKS
   ========================================================= */

.nav-dropdown-menu a {
    display: block;

    margin: 0;
    padding: 10px 12px;

    border-radius: var(--na-radius-sm);

    color: var(--na-color-slate-200);

    font-size: 0.95rem;
    text-decoration: none;

    transition:
        background var(--na-transition-fast),
        color var(--na-transition-fast);
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus {
    color: var(--na-color-blue-light);
    background: rgba(29, 78, 216, 0.18);

    outline: none;
}


/* =========================================================
   DROPDOWN HOVER BRIDGE
   ========================================================= */

.nav-dropdown::before {
    content: "";

    position: absolute;
    top: 100%;
    left: 0;

    width: 260px;
    height: 12px;
}

.nav-dropdown.is-open .nav-dropdown-trigger::after {
    opacity: 1;

    transform: rotate(45deg) translateY(0);
}


/* =========================================================
   MOBILE NAVIGATION
   ========================================================= */

.nav-mobile-toggle,
.nav-mobile-menu {
    display: none;
}


/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 768px) {

    /* ---------------------------------------------------------
       NAVBAR LAYOUT
       --------------------------------------------------------- */

    .navbar-inner {
        padding-left: 12px;
        padding-right: 12px;
    }

    .nav-right {
        gap: 8px;
    }


    /* ---------------------------------------------------------
       HIDE DESKTOP NAVIGATION LINKS
       --------------------------------------------------------- */

    .nav-right > a,
    .nav-right > .nav-dropdown {
        display: none;
    }


    /* ---------------------------------------------------------
       BRAND
       --------------------------------------------------------- */

    .logo {
        gap: 8px;

        font-size: 1rem;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
    }


    /* ---------------------------------------------------------
       LANGUAGE SELECTOR
       --------------------------------------------------------- */

    .nav-lang {
        margin-left: 0;
    }

    .nav-lang-trigger {
        min-width: 48px;
        height: 36px;

        padding: 0 10px;
    }


    /* ---------------------------------------------------------
       HAMBURGER
       --------------------------------------------------------- */

    .nav-mobile-toggle {
        width: 40px;
        height: 40px;

        padding: 0;

        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;

        gap: 5px;

        border: 0;
        border-radius: var(--na-radius-sm);

        background: transparent;
        color: var(--na-color-slate-200);

        cursor: pointer;

        transition:
            background var(--na-transition-fast),
            color var(--na-transition-fast);
    }

    .nav-mobile-toggle:hover,
    .nav-mobile-toggle:focus-visible {
        color: var(--na-color-white);
        background: rgba(255, 255, 255, 0.06);

        outline: none;
    }

    .nav-mobile-toggle span {
        width: 20px;
        height: 2px;

        display: block;

        border-radius: 999px;

        background: currentColor;

        transition:
            transform var(--na-transition-fast),
            opacity var(--na-transition-fast);
    }


    /* ---------------------------------------------------------
       MOBILE MENU
       --------------------------------------------------------- */

    .nav-mobile-menu {
        position: absolute;
        top: var(--na-navbar-height);
        left: 0;
        right: 0;

        padding: 10px 12px 14px;

        display: grid;
        gap: 4px;

        border-top: 1px solid rgba(148, 163, 184, 0.15);

        background: var(--na-color-navy-dark);

        box-shadow: 0 14px 30px rgba(0, 0, 0, 0.25);

        opacity: 0;
        visibility: hidden;
        pointer-events: none;

        transform: translateY(-8px);

        transition:
            opacity var(--na-transition-fast),
            transform var(--na-transition-fast),
            visibility var(--na-transition-fast);
    }

    .nav-mobile-menu a {
        padding: 12px 14px;

        border-radius: var(--na-radius-sm);

        color: var(--na-color-slate-200);

        font-size: 0.95rem;
        text-decoration: none;

        transition:
            color var(--na-transition-fast),
            background var(--na-transition-fast);
    }

    .nav-mobile-menu a:hover,
    .nav-mobile-menu a:focus-visible {
        color: var(--na-color-white);
        background: rgba(255, 255, 255, 0.06);

        outline: none;
    }


    /* ---------------------------------------------------------
       MOBILE SERVICES TREE
       --------------------------------------------------------- */

    .nav-mobile-group {
        display: grid;
    }


    /* Services trigger */

    .nav-mobile-group-trigger {
        width: 100%;

        padding: 12px 14px;

        display: flex;
        align-items: center;
        justify-content: space-between;

        border: 0;
        border-radius: var(--na-radius-sm);

        background: transparent;
        color: var(--na-color-slate-200);

        font: inherit;
        font-size: 0.95rem;
        text-align: left;

        cursor: pointer;

        transition:
            color var(--na-transition-fast),
            background var(--na-transition-fast);
    }

    .nav-mobile-group-trigger:hover,
    .nav-mobile-group-trigger:focus-visible {
        color: var(--na-color-white);
        background: rgba(255, 255, 255, 0.06);

        outline: none;
    }


    /* Services arrow */

    .nav-mobile-group-arrow {
        width: 7px;
        height: 7px;

        margin-right: 3px;

        border-right: 2px solid currentColor;
        border-bottom: 2px solid currentColor;

        transform: rotate(45deg) translateY(-2px);

        transition: transform var(--na-transition-fast);
    }

    .nav-mobile-group.is-open .nav-mobile-group-arrow {
        transform: rotate(225deg) translate(-1px, -1px);
    }


    /* ---------------------------------------------------------
       SERVICES SUBMENU
       --------------------------------------------------------- */

    .nav-mobile-submenu {
        position: relative;

        margin-left: 24px;
        padding-left: 18px;

        display: grid;

        max-height: 0;

        opacity: 0;
        overflow: hidden;

        transition:
            max-height var(--na-transition-normal),
            opacity var(--na-transition-fast);
    }


    /* Vertical tree line */

    .nav-mobile-submenu::before {
        content: "";

        position: absolute;
        top: 0;
        bottom: 12px;
        left: 5px;

        width: 1px;

        background: rgba(148, 163, 184, 0.35);
    }


    /* Child links */

    .nav-mobile-submenu a {
        position: relative;

        padding: 10px 12px;

        font-size: 0.9rem;
        color: var(--na-color-slate-300);
    }


    /* Horizontal tree branches */

    .nav-mobile-submenu a::before {
        content: "";

        position: absolute;
        top: 50%;
        left: -13px;

        width: 10px;
        height: 1px;

        background: rgba(148, 163, 184, 0.35);
    }


    /* Stop vertical line at final tree item */

    .nav-mobile-submenu a:last-child::after {
        content: "";

        position: absolute;
        top: calc(50% + 1px);
        left: -13px;

        width: 1px;
        height: 50%;

        background: var(--na-color-navy-dark);
    }


    /* Expanded Services tree */

    .nav-mobile-group.is-open .nav-mobile-submenu {
        max-height: 120px;

        padding-top: 2px;
        padding-bottom: 6px;

        opacity: 1;
    }


    /* ---------------------------------------------------------
       OPEN STATE
       --------------------------------------------------------- */

    .navbar.is-mobile-open .nav-mobile-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;

        transform: translateY(0);
    }


    /* Hamburger -> X */

    .navbar.is-mobile-open .nav-mobile-toggle span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .navbar.is-mobile-open .nav-mobile-toggle span:nth-child(2) {
        opacity: 0;
    }

    .navbar.is-mobile-open .nav-mobile-toggle span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}