/* =============================================
   SPARSH — Multi-level navbar dropdowns
   Adds two grouped dropdowns ("For Business" and
   "Sleep Library") to the global navbar. Works on
   desktop (hover) and mobile (tap accordion).
   ============================================= */

.nav-links .has-dropdown {
    position: relative;
}

.nav-links .has-dropdown > .nav-dropdown-toggle {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-links .has-dropdown > .nav-dropdown-toggle .caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-top: 2px;
    margin-left: 2px;
    border-left: 3.5px solid transparent;
    border-right: 3.5px solid transparent;
    border-top: 4px solid currentColor;
    opacity: 0.85;
    transition: transform 0.2s ease;
}

.nav-links .has-dropdown.open > .nav-dropdown-toggle .caret,
.nav-links .has-dropdown:hover > .nav-dropdown-toggle .caret {
    transform: rotate(180deg);
}

/* ---------- Dropdown panel (desktop) ---------- */
.nav-dropdown {
    list-style: none;
    margin: 0;
    padding: 8px 0;
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    min-width: 200px;
    background: rgba(20, 27, 42, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s linear 0.22s;
    z-index: 1100;
}

.nav-links .has-dropdown:hover > .nav-dropdown,
.nav-links .has-dropdown:focus-within > .nav-dropdown,
.nav-links .has-dropdown.open > .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s linear 0s;
}

/* Hover-bridge so the gap between toggle and dropdown doesn't kill hover */
.nav-links .has-dropdown::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 18px;
    pointer-events: none;
}
.nav-links .has-dropdown:hover::after,
.nav-links .has-dropdown.open::after {
    pointer-events: auto;
}

.nav-dropdown li {
    margin: 0;
    padding: 0;
}

.nav-dropdown li a {
    display: block;
    padding: 10px 22px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    white-space: nowrap;
    border: 0;
    transition: background-color 0.18s ease, color 0.18s ease;
}

.nav-dropdown li a:hover,
.nav-dropdown li a:focus {
    background: rgba(97, 181, 100, 0.12);
    color: #fff;
}

.nav-dropdown li a.active {
    color: var(--accent-gold, #61B564);
}

/* Active parent state when one of its children matches the current page */
.nav-links .has-dropdown.parent-active > .nav-dropdown-toggle {
    color: var(--accent-gold, #61B564);
}

/* ---------- Light-mode treatment ---------- */
body.light-mode:not(.home-page) .nav-dropdown {
    background: rgba(248, 246, 240, 0.97);
    border-color: rgba(15, 26, 46, 0.08);
    box-shadow: 0 14px 32px rgba(15, 26, 46, 0.12);
}
body.light-mode:not(.home-page) .nav-dropdown li a {
    color: rgba(15, 26, 46, 0.82);
}
body.light-mode:not(.home-page) .nav-dropdown li a:hover {
    background: rgba(97, 181, 100, 0.1);
    color: rgba(15, 26, 46, 1);
}

/* ---------- Homepage: navbar sits at the BOTTOM of the viewport,
   so dropdowns must open UPWARDS — otherwise the panel is clipped
   below the visible area. Desktop only; mobile is a static accordion. */
@media (min-width: 851px) {
    body.home-page .nav-dropdown {
        top: auto;
        bottom: calc(100% + 14px);
        transform: translateX(-50%) translateY(6px);
    }

    body.home-page .nav-links .has-dropdown:hover > .nav-dropdown,
    body.home-page .nav-links .has-dropdown:focus-within > .nav-dropdown,
    body.home-page .nav-links .has-dropdown.open > .nav-dropdown {
        transform: translateX(-50%) translateY(0);
    }

    /* Caret flip: when the menu opens upward, default state points up
       toward the dropdown; rotate to point down on open. */
    body.home-page .nav-links .has-dropdown > .nav-dropdown-toggle .caret {
        transform: rotate(180deg);
    }
    body.home-page .nav-links .has-dropdown.open > .nav-dropdown-toggle .caret,
    body.home-page .nav-links .has-dropdown:hover > .nav-dropdown-toggle .caret {
        transform: rotate(0deg);
    }

    /* Hover-bridge flipped: extend upward from the toggle. */
    body.home-page .nav-links .has-dropdown::after {
        top: auto;
        bottom: 100%;
    }
}

/* ---------- Mobile: dropdown becomes inline accordion ---------- */
@media (max-width: 850px) {
    .nav-dropdown {
        position: static;
        transform: none !important;
        opacity: 1;
        visibility: hidden;
        pointer-events: none;
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        padding: 0;
        margin-top: 4px;
        min-width: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.25s ease, visibility 0s linear 0.25s;
    }

    .nav-links .has-dropdown.open > .nav-dropdown {
        visibility: visible;
        pointer-events: auto;
        max-height: 400px;
        transition: max-height 0.3s ease, visibility 0s linear 0s;
    }

    .nav-dropdown li a {
        padding: 8px 0 8px 18px;
        font-size: 0.88rem;
        opacity: 0.85;
    }

    .nav-links .has-dropdown > .nav-dropdown-toggle {
        width: 100%;
        justify-content: center;
        align-items: center;
        display: inline-flex;
    }

    /* Restyle the inline caret inside the link to be a prominent circular button next to text on mobile */
    .nav-links .has-dropdown > .nav-dropdown-toggle .caret {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        position: relative;
        width: 38px;
        height: 38px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 50%;
        margin-left: 14px;
        margin-top: 0;
        cursor: pointer;
        opacity: 1;
        transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s ease;
        /* Remove default CSS caret border styles */
        border-left: none;
        border-right: none;
        border-top: none;
    }

    /* Draw the caret triangle via ::after on mobile */
    .nav-links .has-dropdown > .nav-dropdown-toggle .caret::after {
        content: "";
        display: inline-block;
        width: 0;
        height: 0;
        border-left: 4.5px solid transparent;
        border-right: 4.5px solid transparent;
        border-top: 5px solid currentColor;
        transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Hover and focus states for the caret button on mobile */
    .nav-links .has-dropdown > .nav-dropdown-toggle .caret:hover,
    .nav-links .has-dropdown > .nav-dropdown-toggle .caret:focus {
        background: rgba(97, 181, 100, 0.2);
        border-color: #61B564;
        color: #61B564;
        box-shadow: 0 0 10px rgba(97, 181, 100, 0.4);
    }

    /* Open / Expanded state */
    .nav-links .has-dropdown.open > .nav-dropdown-toggle .caret {
        background: #61B564;
        border-color: #61B564;
        color: #fff;
        box-shadow: 0 0 15px rgba(97, 181, 100, 0.6);
    }

    .nav-links .has-dropdown.open > .nav-dropdown-toggle .caret::after {
        transform: rotate(180deg);
    }

    /* Light mode overrides for the caret button on mobile */
    body.light-mode .nav-links .has-dropdown > .nav-dropdown-toggle .caret {
        background: rgba(15, 26, 46, 0.05);
        border-color: rgba(15, 26, 46, 0.15);
        color: rgba(15, 26, 46, 0.8);
    }

    body.light-mode .nav-links .has-dropdown > .nav-dropdown-toggle .caret:hover,
    body.light-mode .nav-links .has-dropdown > .nav-dropdown-toggle .caret:focus {
        background: rgba(97, 181, 100, 0.15);
        border-color: #61B564;
        color: #61B564;
    }

    body.light-mode .nav-links .has-dropdown.open > .nav-dropdown-toggle .caret {
        background: #61B564;
        border-color: #61B564;
        color: #fff;
    }
}