/* ============================================================
   NAV.CSS: site header and navigation
   Matches: .site-header > .nav > brand, .nav-toggle, .nav-backdrop,
   ul.nav-links (includes the Programs mega menu), .nav-cta
   ============================================================ */

/* ---------- Header shell ----------
   Only padding-top/bottom is set, so .container's left/right padding survives. */
.site-header {
    position: sticky;
    top: 0;
    z-index: 500;
    background: var(--white);
    border-bottom: 1px solid var(--line);
}
.nav {
    display: flex;
    align-items: center;
    padding-top: 14px;
    padding-bottom: 14px;
}

/* ---------- Brand ---------- */
.brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

/* ---------- Desktop link list ---------- */
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0 28px 0 auto;
    padding: 0;
}
.nav-links > li > a {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--ink-soft);
    padding: 10px 14px;
    border-radius: 999px;
    white-space: nowrap;
    transition:
        background 0.2s ease,
        color 0.2s ease;
}
.nav-links > li > a:hover {
    color: var(--navy);
    background: var(--cream-deep);
}
.nav-links > li > a.active {
    color: var(--navy);
    background: rgba(239, 157, 74, 0.18);
}

/* ---------- Desktop CTA ---------- */
.nav-cta {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* ---------- Programs trigger button ---------- */
.nav-item-mega {
    position: static; /* panel positions against the header, not the li */
}
.nav-dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--ink-soft);
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px 14px;
    border-radius: 999px;
    white-space: nowrap;
    transition:
        background 0.2s ease,
        color 0.2s ease;
}
.nav-dropdown-toggle:hover,
.nav-dropdown-toggle[aria-expanded="true"] {
    color: var(--navy);
    background: var(--cream-deep);
}
.nav-dropdown-toggle.active {
    color: var(--navy);
    background: rgba(239, 157, 74, 0.18);
}
.nav-caret {
    flex-shrink: 0;
    transition: transform 0.2s ease;
}
.nav-dropdown-toggle[aria-expanded="true"] .nav-caret {
    transform: rotate(180deg);
}

/* ---------- Mega menu: shared content styles ---------- */
.nav-mega-inner {
    background: transparent;
}
.nav-mega-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.nav-mega-col {
    padding: 0 36px;
}
.nav-mega-col-title {
    position: relative;
    display: block;
    padding: 0 0 14px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    line-height: 1.3;
    color: var(--navy);
    transition: color 0.2s ease;
}
.nav-mega-col-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 32px;
    height: 3px;
    background: var(--orange);
    border-radius: 2px;
    transition: width 0.25s ease;
}
.nav-mega-col-title:hover {
    color: var(--orange-deep);
}
.nav-mega-col-title:hover::after {
    width: 56px;
}
.nav-mega-col ul li + li {
    margin-top: 2px;
}
.nav-mega-col ul li a {
    position: relative;
    display: block;
    margin: 0 -12px;
    padding: 10px 34px 10px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--ink);
    transition:
        background 0.15s ease,
        color 0.15s ease;
}
.nav-mega-col ul li a::after {
    content: "→";
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translate(-6px, -50%);
    opacity: 0;
    color: var(--orange-deep);
    font-weight: 700;
    transition:
        opacity 0.15s ease,
        transform 0.15s ease;
}
.nav-mega-col ul li a:hover,
.nav-mega-col ul li a:focus-visible {
    background: var(--cream-deep);
    color: var(--navy);
}
.nav-mega-col ul li a:hover::after,
.nav-mega-col ul li a:focus-visible::after {
    opacity: 1;
    transform: translate(0, -50%);
}
.nav-mega-empty {
    padding: 10px 0;
    font-size: 0.9rem;
    font-style: italic;
    color: var(--ink-soft);
}

/* ---------- Mega menu: desktop panel (≥721px) ---------- */
@media (min-width: 721px) {
    .nav-mega-panel {
        position: absolute;
        top: 100%;
        left: 50%;
        width: min(1320px, calc(100% - (var(--pad) * 2)));
        transform: translateX(-50%) translateY(-8px);
        background: var(--white);
        border-bottom: 3px solid var(--orange);
        box-shadow: 0 30px 50px -14px rgba(20, 20, 45, 0.25);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition:
            opacity 0.12s ease,
            transform 0.12s ease,
            visibility 0s linear 0.12s;
        z-index: 200;
    }
    /* .nav-item-mega:hover .nav-mega-panel, */
    .nav-item-mega.open .nav-mega-panel {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateX(-50%) translateY(0);
        transition:
            opacity 0.2s ease,
            transform 0.2s ease,
            visibility 0s linear 0s;
    }

    /* Hover bridge: covers the header padding between the button and the panel */
    /* .nav-mega-panel::before {
        content: "";
        position: absolute;
        top: -40px;
        left: 0;
        width: 100%;
        height: 40px;
    } */

    .nav-mega-inner {
        padding: 44px 24px 48px;
    }

    /* Max 3 columns per row: Programs 1–3 on row one, 4–6 on row two */
    .nav-mega-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        row-gap: 32px;
    }
    .nav-mega-col-title {
        font-size: 0.78rem;
    }
    .nav-mega-empty {
        padding: 10px 0;
    }
}

/* ---------- Hamburger toggle (hidden on desktop) ---------- */
.nav-toggle {
    display: none;
}
.nav-backdrop {
    display: none;
}
.nav-drawer-head,
.nav-cta-mobile {
    display: none;
}

/* ============================================================
   MOBILE (≤720px): hamburger, backdrop, right-side drawer,
   Programs accordion
   ============================================================ */
@media (max-width: 720px) {
    /* Hamburger: two bars, which become an X when open */
    .nav-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 40px;
        height: 40px;
        margin-left: auto;
        margin-right: 4px;
        padding: 0;
        border: none;
        background: none;
        cursor: pointer;
        position: relative;
        z-index: 1001;
    }
    .nav-toggle.open {
        opacity: 0;
        pointer-events: none;
    }
    .nav-toggle-bar {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--navy);
        border-radius: 2px;
        transition:
            transform 0.25s ease,
            opacity 0.2s ease;
    }
    /* 5px gap + 2px bar = 7px pitch, so each bar moves 3.5px to meet at centre */
    .nav-toggle.open .nav-toggle-bar:nth-child(1) {
        transform: translateY(3.5px) rotate(45deg);
    }
    .nav-toggle.open .nav-toggle-bar:nth-child(2) {
        transform: translateY(-3.5px) rotate(-45deg);
    }

    /* Backdrop */
    .nav-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.45);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease;
        z-index: 900;
    }
    .nav-backdrop.open {
        opacity: 1;
        pointer-events: auto;
    }

    /* Drawer */
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        margin: 0;
        padding: 20px 22px 24px;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        transform: translateX(100%);
        transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 950;
        overflow-y: auto;
    }
    .nav-links.open {
        transform: translateX(0);
    }
    .nav-drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-bottom: 16px;
        margin-bottom: 10px;
        border-bottom: 1px solid var(--line);
    }
    .nav-close {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: 1px solid var(--line);
        background: var(--white);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--ink-soft);
        cursor: pointer;
        transition:
            background 0.2s ease,
            color 0.2s ease;
    }
    .nav-close:hover {
        background: var(--cream-deep);
        color: var(--navy);
    }

    .nav-links > li > a {
        width: 100%;
        padding: 13px 14px;
        border-radius: var(--radius-md);
    }
    .nav-dropdown-toggle {
        width: 100%;
        justify-content: space-between;
        padding: 13px 14px;
        border-radius: var(--radius-md);
    }

    .nav-cta {
        display: none;
    }
    .nav-cta-mobile {
        display: block;
        margin-top: auto;
        padding-top: 18px;
    }
    .nav-cta-mobile .btn {
        display: block;
        width: 100%;
        text-align: center;
    }

    /* Programs accordion: panel sits in flow and opens by max-height */
    .nav-mega-panel {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        background: transparent;
        border: none;
        box-shadow: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.2s ease;
    }
    .nav-item-mega.open .nav-mega-panel {
        max-height: 1400px;
    }
    .nav-mega-panel::before {
        display: none;
    }
    .nav-mega-inner {
        padding: 0;
    }
    .nav-mega-grid {
        display: flex;
        flex-direction: column;
        gap: 20px;
        padding: 10px 0 12px 14px;
    }
    .nav-mega-col {
        padding: 0;
    }
    .nav-mega-col-title {
        padding: 0 0 8px;
        margin-bottom: 6px;
        border-bottom: none;
        font-size: 0.72rem;
        color: var(--orange-deep);
    }
    .nav-mega-col-title::after {
        display: none;
    }
    .nav-mega-col-title:hover::after {
        width: 32px;
    }
    .nav-mega-col ul {
        border-left: 2px solid var(--line);
    }
    .nav-mega-col ul li + li {
        margin-top: 0;
    }
    .nav-mega-col ul li a {
        margin: 0;
        padding: 11px 14px;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .nav-mega-col ul li a::after {
        display: none;
    }
    .nav-mega-col ul li a:hover,
    .nav-mega-col ul li a:focus-visible {
        padding-left: 14px;
    }
    .nav-mega-empty {
        padding: 11px 14px;
    }
}

/* ---------- Simple dropdown (e.g. Initiatives) ---------- */
.nav-item-simple {
    position: relative; /* panel positions against this li, unlike the mega menu */
}
.nav-dropdown-panel {
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav-dropdown-panel li a {
    position: relative;
    display: block;
    padding: 10px 34px 10px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--ink);
    white-space: nowrap;
    transition:
        background 0.15s ease,
        color 0.15s ease;
}
.nav-dropdown-panel li a::after {
    content: "→";
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translate(-6px, -50%);
    opacity: 0;
    color: var(--orange-deep);
    font-weight: 700;
    transition:
        opacity 0.15s ease,
        transform 0.15s ease;
}
.nav-dropdown-panel li a:hover,
.nav-dropdown-panel li a:focus-visible {
    background: var(--cream-deep);
    color: var(--navy);
}
.nav-dropdown-panel li a:hover::after,
.nav-dropdown-panel li a:focus-visible::after {
    opacity: 1;
    transform: translate(0, -50%);
}

/* Desktop panel (≥721px) */
@media (min-width: 721px) {
    .nav-item-simple .nav-dropdown-panel {
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 240px;
        padding: 10px;
        background: var(--white);
        border-bottom: 3px solid var(--orange);
        border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        box-shadow: 0 20px 40px -12px rgba(20, 20, 45, 0.25);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition:
            opacity 0.12s ease,
            transform 0.12s ease,
            visibility 0s linear 0.12s;
        z-index: 200;
    }
    /* .nav-item-simple:hover .nav-dropdown-panel, */
    .nav-item-simple.open .nav-dropdown-panel {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
        transition:
            opacity 0.2s ease,
            transform 0.2s ease,
            visibility 0s linear 0s;
    }
    /* Hover bridge across the header padding */
    /* .nav-item-simple .nav-dropdown-panel::before {
        content: "";
        position: absolute;
        top: -20px;
        left: 0;
        width: 100%;
        height: 20px;
    } */
}

/* Mobile accordion (≤720px) */
@media (max-width: 720px) {
    .nav-item-simple .nav-dropdown-panel {
        max-height: 0;
        overflow: hidden;
        margin-left: 14px;
        border-left: 2px solid var(--line);
        transition: max-height 0.2s ease;
    }
    .nav-item-simple.open .nav-dropdown-panel {
        max-height: 400px;
    }
    .nav-dropdown-panel li a {
        padding: 11px 14px;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .nav-dropdown-panel li a::after {
        display: none;
    }
}

/* ---------- Breathing room ---------- */
.site-header .nav.container {
    max-width: 1400px; /* header can be wider than page content */
}
.nav-links {
    gap: 8px; /* was 2–4px */
}
@media (min-width: 721px) {
    .nav-links > li > a,
    .nav-dropdown-toggle {
        padding: 10px 16px;
    }
}