/* =========================================================
   RESET
========================================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* =========================================================
   HEADER WRAPPER
========================================================= */
.site-header {
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    font-family: Helvetica, Arial, sans-serif;
}

/* =========================================================
   TOP RIBBON (DARK GREEN)
========================================================= */
.top-ribbon {
    background: #0a4f3c;
}

.ribbon-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8px 20px;
    display: flex;
    justify-content: flex-end;
}

.ribbon-right a {
    color: #ffffff;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    margin-left: 22px;
}

.ribbon-right a:hover {
    text-decoration: underline;
}

/* =========================================================
   MAIN HEADER
========================================================= */
.main-header {
    background: #ffffff;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 18px 20px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* =========================================================
   LOGO + TITLE (HARVARD STYLE)
========================================================= */
.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo img {
    height: 46px; /* EXACT visual balance */
    width: auto;
}

.logo span {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    line-height: 1.1;
    color: #0a4f3c; /* Dark Green */
    white-space: nowrap;
}

/* =========================================================
   DESKTOP NAVIGATION
========================================================= */
.main-nav {
    display: flex;
    gap: 28px;
}

.main-nav a {
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #222;
    text-transform: uppercase;
}

.main-nav a:hover {
    text-decoration: underline;
}

/* =========================================================
   HAMBURGER (MOBILE)
========================================================= */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 3px;
    background: #0a4f3c;
    margin: 5px 0;
}

/* =========================================================
   MOBILE MENU
========================================================= */
.menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}

.menu-overlay.active {
    display: block;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: #ffffff;
    padding: 24px;
    transition: right 0.3s ease;
    z-index: 1000;
}

.mobile-menu.active {
    right: 0;
}

.mobile-header {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

.mobile-nav a {
    display: block;
    padding: 12px 0;
    text-decoration: none;
    font-weight: 600;
    color: #222;
}

.mobile-divider {
    height: 1px;
    background: #ddd;
    margin: 16px 0;
}

.mobile-auth {
    font-weight: 700;
    color: #0a4f3c;
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 992px) {
    .main-nav {
        display: none;
    }

    .hamburger {
        display: block;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 38px;
    }

    .logo span {
        font-size: 20px;
    }
}
/* ================================
   DESKTOP-ONLY SUBTITLE BOOST
================================ */
@media (min-width: 1024px) {
    .hero-subtitle {
        font-size: 1.45rem;   /* ↑ from 1.25rem */
        line-height: 1.65;
        max-width: 900px;     /* more breathing room like Harvard */
    }
}