/* ============================================================
   SITE NAVIGATION — Fully Responsive
   ============================================================ */

.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 200;
    background: var(--msu-white);
    border-bottom: 1px solid var(--msu-border);
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
    transition: box-shadow 0.3s ease;
    height: 72px;
    overflow: hidden;
}
.site-nav.scrolled {
    box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    max-width: 1440px;
    margin: 0 auto;
    height: 72px;
    gap: 1.5rem;
    overflow: hidden;
}

/* ══════════════════════════════════════════
   LOGO AREA
══════════════════════════════════════════ */
.nav-logo-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    flex-shrink: 0;
    max-width: 320px;
    min-width: 0;
    overflow: hidden;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
    overflow: hidden;
}

/* The actual logo image — MUST stay within nav bar */
.nav-logo-img {
    width: 52px;
    height: 52px;
    min-width: 52px;
    max-width: 52px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 15%;
    flex-shrink: 0;
    display: block;
}

/* Fallback badge when no logo uploaded */
.logo-badge-fallback {
    width: 52px; height: 52px;
    border-radius: 50%;
    background: var(--msu-maroon);
    border: 2px solid var(--msu-gold);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

/* Org name text block */
.logo-text-block {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
    min-width: 0;
    max-width: 220px;
}
.logo-name {
    font-family: var(--font-serif);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--msu-maroon);
    white-space: nowrap;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
.logo-sub-name {
    font-size: 0.5rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--msu-gold);
    white-space: nowrap;
    display: block;
    margin-top: 0.15rem;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ══════════════════════════════════════════
   PRIMARY MENU
══════════════════════════════════════════ */
.nav-links {
    display: flex;
    list-style: none;
    margin: 0; padding: 0;
    align-items: center;
    flex: 1;
    justify-content: center;
    gap: 0;
}

.nav-links > li { position: relative; }

.nav-links > li > a {
    color: var(--msu-text-muted);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    padding: 0 0.9rem;
    height: 72px;
    display: flex;
    align-items: center;
    position: relative;
    white-space: nowrap;
    transition: color 0.2s;
}
.nav-links > li > a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0.9rem; right: 0.9rem;
    height: 2px;
    background: var(--msu-gold);
    transform: scaleX(0);
    transition: transform 0.22s;
    transform-origin: left;
    border-radius: 2px 2px 0 0;
}
.nav-links > li > a:hover { color: var(--msu-maroon); }
.nav-links > li > a:hover::after { transform: scaleX(1); }
.nav-links .current-menu-item > a,
.nav-links .current-page-ancestor > a {
    color: var(--msu-maroon);
    font-weight: 700;
}
.nav-links .current-menu-item > a::after,
.nav-links .current-page-ancestor > a::after { transform: scaleX(1); }

/* Dropdown */
.nav-links .sub-menu {
    position: absolute;
    top: 100%; left: 0;
    background: var(--msu-white);
    border: 1px solid var(--msu-border);
    border-top: 3px solid var(--msu-gold);
    min-width: 200px;
    padding: 0.4rem 0;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    opacity: 0; visibility: hidden;
    transform: translateY(6px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
    z-index: 300;
    list-style: none;
}
.nav-links li:hover > .sub-menu,
.nav-links li:focus-within > .sub-menu {
    opacity: 1; visibility: visible; transform: translateY(0);
}
.sub-menu a {
    display: block;
    padding: 0.5rem 1.2rem;
    font-size: 0.8rem;
    color: var(--msu-text) !important;
}
.sub-menu a:hover { background: var(--msu-light-bg); color: var(--msu-maroon) !important; }

/* ══════════════════════════════════════════
   NAV ACTIONS (CTA + hamburger)
══════════════════════════════════════════ */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.nav-cta {
    background: var(--msu-maroon);
    color: var(--msu-white) !important;
    border: none;
    padding: 0.6rem 1.3rem;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}
.nav-cta:hover { background: var(--msu-maroon-dark); color: var(--msu-white) !important; }

/* Hamburger */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    width: 38px; height: 38px;
}
.nav-hamburger span {
    display: block;
    width: 22px; height: 2px;
    background: var(--msu-maroon);
    transition: transform 0.3s, opacity 0.3s;
    border-radius: 2px;
}
.site-nav.nav-open .nav-hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav.nav-open .nav-hamburger span:nth-child(2) { opacity: 0; }
.site-nav.nav-open .nav-hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════
   LAPTOP: 1024px–1280px — tighten spacing
══════════════════════════════════════════ */
@media (max-width: 1280px) {
    .nav-inner { padding: 0 1.5rem; gap: 1rem; }
    .logo-name { font-size: 0.82rem; }
    .logo-sub-name { font-size: 0.52rem; }
    .nav-links > li > a { padding: 0 0.7rem; font-size: 0.78rem; }
}

@media (max-width: 1100px) {
    .nav-inner { gap: 0.75rem; }
    .logo-name { font-size: 0.78rem; }
    .logo-sub-name { font-size: 0.48rem; }
    .nav-logo-img, .logo-badge-fallback { width: 44px; height: 44px; }
    .nav-links > li > a { padding: 0 0.6rem; font-size: 0.76rem; }
}

/* ══════════════════════════════════════════
   TABLET / MOBILE: below 960px — hamburger
══════════════════════════════════════════ */
@media (max-width: 960px) {
    .nav-inner { padding: 0 1.25rem; height: 64px; }

    /* Show hamburger, hide desktop CTA */
    .nav-hamburger { display: flex; }
    .nav-cta { display: none; }

    /* Slide-in drawer */
    .nav-links {
        position: fixed;
        top: 64px; left: 0; right: 0; bottom: 0;
        background: var(--msu-white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 0;
        border-top: 3px solid var(--msu-gold);
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
        overflow-y: auto;
        z-index: 150;
        padding: 0;
    }
    .site-nav.nav-open .nav-links { transform: translateX(0); }

    .nav-links > li > a {
        height: auto;
        padding: 1.1rem 1.5rem;
        font-size: 1.05rem;
        border-bottom: 1px solid var(--msu-border);
        color: var(--msu-text);
    }
    .nav-links > li > a::after { display: none; }

    /* Member Login inside drawer */
    .nav-links::before {
        content: 'Member Login';
        display: block;
        background: var(--msu-maroon);
        color: var(--msu-white);
        text-align: center;
        padding: 1rem;
        font-size: 0.85rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        order: 99;
    }

    .sub-menu {
        position: static;
        opacity: 1 !important; visibility: visible !important;
        transform: none !important;
        box-shadow: none; border: none;
        background: var(--msu-light-bg);
        padding-left: 0.5rem;
    }
    .sub-menu a { font-size: 0.9rem !important; padding: 0.8rem 1.5rem !important; border-bottom: 1px solid var(--msu-border); }

    /* Smaller logo on tablet */
    .nav-logo-img, .logo-badge-fallback { width: 42px; height: 42px; }
    .logo-name { font-size: 0.78rem; }
    .logo-sub-name { font-size: 0.46rem; }
}

/* ══════════════════════════════════════════
   SMALL MOBILE: below 600px
══════════════════════════════════════════ */
@media (max-width: 600px) {
    .nav-inner { padding: 0 1rem; height: 60px; }
    .nav-logo-img, .logo-badge-fallback { width: 36px; height: 36px; }
    .nav-logo { gap: 0.5rem; }
    .logo-name { font-size: 0.72rem; }
    /* Hide the sub-name on small phones to save space */
    .logo-sub-name { display: none; }
}

/* ══════════════════════════════════════════
   BACKDROP overlay
══════════════════════════════════════════ */
body.nav-overlay-open::before {
    content: '';
    position: fixed;
    inset: 64px 0 0;
    background: rgba(0,0,0,0.45);
    z-index: 140;
    backdrop-filter: blur(2px);
}