/* ── HEADER ── */
.header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 64px;
    background: var(--primary-dk);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1000;
    box-shadow: 0 2px 16px rgba(13,71,161,0.25);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo img {
    width: 36px;
    height: 36px;
    border-radius: 9px;
}

.logo span {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
}

.nav-links nav {
    display: flex;
    gap: 32px;
}

.nav-links nav a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links nav a:hover { color: #fff; }

/* ── MOBILE MENU BUTTON ── */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #fff;
}

/* ── MOBILE MENU OVERLAY ── */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: var(--primary-dk);
    z-index: 2000;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.mobile-menu-overlay.active { display: flex; }

.mobile-menu-close {
    position: absolute;
    top: 18px; right: 20px;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #fff;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    width: 80%;
}

.mobile-nav a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
    padding: 12px 0;
    width: 100%;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.15);
}