/* =============================================================
   NICHENCY -- NAVIGATION
   components/navigation.css
   ============================================================= */

/* ----------------------------------------------------------------
   DESKTOP NAV -- top-level items
   ---------------------------------------------------------------- */
.main-navigation ul {
    list-style: none;
    display: flex;
    gap: 28px;
    align-items: center;
    position: relative;
}

.main-navigation ul li {
    position: relative;   /* anchor for absolute submenu */
}

/* All nav links */
.main-navigation ul li a {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-blue);
    transition: opacity .2s;
    display: inline-block;
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
    transition: opacity .2s, border-color .2s;
    white-space: nowrap;
}

.main-navigation ul li a:hover {
    opacity: 0.75;
    border-bottom-color: var(--dark-blue);
}

/* Active / current page -- underline */
.main-navigation .current-menu-item > a,
.main-navigation .current-menu-ancestor > a,
.main-navigation .current-page-ancestor > a {
    border-bottom-color: var(--dark-blue);
    opacity: 1;
}

/* ----------------------------------------------------------------
   DROPDOWN -- sub-menu
   ---------------------------------------------------------------- */
.main-navigation .sub-menu {
    display: none;              /* hidden until hover */
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(19,15,73,0.10);
    min-width: 200px;
    padding: 6px 0;
    z-index: 1100;
    flex-direction: column;     /* override parent flex when shown */
    gap: 0;
}

/* Small connecting bridge so moving mouse into submenu doesn't dismiss it */
.main-navigation .sub-menu::before {
    content: '';
    position: absolute;
    top: -14px;
    left: 0;
    right: 0;
    height: 14px;
}

/* Show submenu on hover of parent li */
.main-navigation .menu-item-has-children:hover > .sub-menu {
    display: flex;
}

/* Submenu items */
.main-navigation .sub-menu li {
    position: static;
    width: 100%;
}

.main-navigation .sub-menu li a {
    display: block;
    width: 100%;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 400;
    border-bottom: none;
    border-radius: 0;
    opacity: 1;
    color: var(--dark-blue);
    transition: background .15s, color .15s;
}

.main-navigation .sub-menu li a:hover {
    background: var(--hero-bg);
    opacity: 1;
    border-bottom: none;
    color: var(--dark-blue);
}

.main-navigation .sub-menu .current-menu-item > a {
    background: var(--hero-bg);
    font-weight: 600;
}

/* Dropdown indicator arrow on parent item */
.main-navigation .menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    margin-left: 6px;
    vertical-align: middle;
    opacity: 0.6;
    transition: transform .2s;
}

.main-navigation .menu-item-has-children:hover > a::after {
    transform: rotate(-135deg) translateY(-2px);
    opacity: 1;
}

/* ----------------------------------------------------------------
   HAMBURGER BUTTON -- mobile only
   ---------------------------------------------------------------- */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1100;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--dark-blue);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

/* ----------------------------------------------------------------
   MOBILE NAV DRAWER  (max-width: 768px)
   ---------------------------------------------------------------- */
@media screen and (max-width: 768px) {

    .nav-toggle { display: flex; }

    .main-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
        padding: 8px 0 16px;
        z-index: 999;
        box-shadow: 0 8px 24px rgba(19,15,73,0.08);
    }

    .main-navigation.is-open { display: block; }

    /* Reset desktop flex layout */
    .main-navigation ul {
        flex-direction: column;
        gap: 0;
        align-items: stretch;
    }

    .main-navigation ul li { position: static; }

    /* Top-level links */
    .main-navigation > ul > li > a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 13px 24px;
        font-size: 15px;
        border-bottom: 1px solid var(--border);
        border-left: none;
        opacity: 1;
    }

    .main-navigation > ul > li:last-child > a {
        border-bottom: none;
    }

    /* Active underline becomes left accent on mobile */
    .main-navigation .current-menu-item > a,
    .main-navigation .current-menu-ancestor > a {
        border-bottom-color: transparent;
        border-left: 3px solid var(--dark-blue);
        padding-left: 21px;         /* compensate for border width */
        font-weight: 600;
    }

    /* Submenu toggle chevron -- replaces the ::after pseudo on mobile */
    .main-navigation .menu-item-has-children > a::after {
        content: '';
        width: 8px;
        height: 8px;
        border-right: 2px solid var(--dark-blue);
        border-bottom: 2px solid var(--dark-blue);
        transform: rotate(45deg);
        margin-left: auto;
        flex-shrink: 0;
        opacity: 0.55;
        transition: transform .25s;
    }

    /* Rotates when submenu is open */
    .main-navigation .menu-item-has-children.submenu-open > a::after {
        transform: rotate(-135deg);
        opacity: 1;
    }

    /* Submenu -- hidden by default on mobile, toggled by JS */
    .main-navigation .sub-menu {
        display: none;
        position: static;
        transform: none;
        border: none;
        border-radius: 0;
        box-shadow: none;
        background: var(--hero-bg);
        padding: 4px 0;
        min-width: auto;
        width: 100%;
        flex-direction: column;
    }

    /* Override -- show when JS adds .submenu-open to parent li */
    .main-navigation .menu-item-has-children.submenu-open > .sub-menu {
        display: flex;
    }

    .main-navigation .sub-menu li a {
        padding: 11px 24px 11px 36px;
        font-size: 14px;
        border-bottom: 1px solid rgba(19,15,73,0.07);
        color: var(--dark-blue);
        background: none;
    }

    .main-navigation .sub-menu li:last-child a {
        border-bottom: none;
    }

    .main-navigation .sub-menu li a:hover {
        background: rgba(19,15,73,0.05);
    }

    .main-navigation .sub-menu .current-menu-item > a {
        font-weight: 600;
        border-left: 3px solid var(--dark-blue);
        padding-left: 33px;
        background: none;
    }
}

/* ----------------------------------------------------------------
   SCROLL-TO-TOP BUTTON
   ---------------------------------------------------------------- */
.scroll-nav {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 2000;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}

.scroll-nav.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.scroll-btn {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--dark-blue);
    color: #ffffff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(19,15,73,0.28);
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    position: relative;
}

.scroll-btn:hover {
    background: #55527C;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(19,15,73,0.32);
}

.scroll-icon-up   { display: block; }
.scroll-icon-down { display: none; }

.scroll-btn.at-bottom .scroll-icon-up  { display: none; }
.scroll-btn.at-bottom .scroll-icon-down { display: block; }

@media screen and (max-width: 600px) {
    .scroll-nav { bottom: 20px; right: 20px; }
    .scroll-btn { width: 42px; height: 42px; }
}