/* ──────────────────────────────────────────────
   Header / Navigation
   BMW CCA Boston Chapter
   ────────────────────────────────────────────── */

/* ── Sticky header ──────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-white);
    width: 100%;
}

/* Anchor scroll offset: uses JS-set --header-height */
html {
    scroll-padding-top: var(--header-height, 80px);
    scroll-behavior: smooth;
}

/* ── Header inner layout ────────────────────── */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    height: 72px;
}

/* ── Logo ────────────────────────────────────── */
.site-logo {
    flex-shrink: 0;
}

.site-logo .logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.site-logo .logo-img {
    height: 36px;
    width: auto;
    display: block;
}

.site-logo .custom-logo {
    height: 36px;
    width: auto;
    display: block;
}

/* ── Primary navigation ─────────────────────── */
.primary-nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 36px;
}

.nav-item {
    position: relative;
}

.nav-link,
.nav-link:hover,
.nav-link:focus,
.nav-link:active {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--color-gray-900);
    text-decoration: none;
    padding: 4px 0;
    position: relative;
    transition: color 0.2s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-bmw-red);
    transition: width 0.25s ease;
}

.nav-link:hover::after,
.nav-item.current-menu-item .nav-link::after,
.nav-item.current_page_item .nav-link::after {
    width: 100%;
}

/* ── Header CTA ─────────────────────────────── */
.header-cta {
    flex-shrink: 0;
}

/* ── Hamburger toggle ───────────────────────── */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-900);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger to X animation */
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Body scroll lock when nav is open ──────── */
body.nav-overlay-active {
    overflow: hidden;
}

/* ── Responsive ─────────────────────────────── */

@media (max-width: 960px) {
    .header-inner {
        padding: 0 24px;
    }

    .nav-menu {
        gap: 24px;
    }
}

@media (max-width: 840px) {
    .nav-toggle {
        display: flex;
    }

    .header-cta {
        display: none;
    }

    .primary-nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-white);
        z-index: 999;
        padding-top: 80px;
        overflow-y: auto;
    }

    .primary-nav.is-open {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
    }

    .primary-nav.is-open .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: 20px 40px;
    }

    .primary-nav.is-open .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-gray-200);
    }

    .primary-nav.is-open .nav-link {
        display: block;
        padding: 16px 0;
        font-size: 16px;
    }

    .primary-nav.is-open .nav-link::after {
        display: none;
    }

    /* Show membership link inside mobile nav */
    .primary-nav.is-open::after {
        content: 'MEMBERSHIP';
        display: block;
        font-family: "futura-pt", sans-serif;
        font-weight: 700;
        font-size: 13px;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--color-bmw-red);
        border: 2px solid var(--color-bmw-red);
        border-radius: 4px;
        padding: 12px 28px;
        margin-top: 24px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-inner {
        padding: 0 16px;
        height: 64px;
    }

    .site-logo .logo-img,
    .site-logo .custom-logo {
        height: 30px;
    }
}