/* =======================================================================
   TOP UTILITY BAR
======================================================================= */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    height: var(--topbar-height);
    background: var(--color-primary-dark);
    color: var(--color-paper);
    font-size: 0.8rem;
}
.topbar__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.topbar__contact { display: flex; align-items: center; gap: 1.25rem; }
.topbar__link { display: inline-flex; align-items: center; gap: 0.4rem; opacity: 0.92; transition: color var(--transition-fast); }
.topbar__link svg { width: 13px; height: 13px; }
.topbar__link:hover { color: var(--color-accent); opacity: 1; }
.topbar__social { display: flex; align-items: center; gap: 0.65rem; }
.topbar__icon {
    display: flex; align-items: center; justify-content: center;
    width: 24px; height: 24px;
    color: var(--color-paper);
    opacity: 0.85;
    transition: color var(--transition-fast), opacity var(--transition-fast);
}
.topbar__icon svg { width: 15px; height: 15px; }
.topbar__icon:hover { color: var(--color-accent); opacity: 1; }

/* =======================================================================
   MAIN HEADER
======================================================================= */
.site-header {
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    right: 0;
    z-index: 59;
    height: var(--header-height);
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-line);
    transition: box-shadow var(--transition-base), height var(--transition-base);
}

/* Signature: a thin ledger "double rule" under the header, like the
   ruled line under an entry in a passbook. */
.site-header::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -4px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.site-header.is-scrolled {
    box-shadow: var(--shadow-md);
}
.site-header.is-scrolled::after { opacity: 1; }

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

/* Brand / logo */
.brand { display: flex; align-items: center; gap: 0.7rem; flex-shrink: 0; }
.brand__logo { height: 46px; width: auto; }
.brand__mark {
    display: none;
    width: 42px; height: 42px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-accent);
    flex: none;
}
.brand__mark--fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}
.brand__mark--fallback::before {
    content: 'K';
    font-size: 1.2rem;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand__name { font-weight: 800; font-size: 1.05rem; color: var(--color-primary); white-space: nowrap; }
.brand__tagline { font-size: 0.7rem; color: var(--color-accent-dark); font-weight: 600; white-space: normal; line-height: 1.25; max-width: 150px; }

/* =======================================================================
   DESKTOP NAVIGATION
======================================================================= */
.main-nav { display: none; }

.main-nav__list { display: flex; align-items: center; gap: 0.15rem; }

.main-nav__link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.6rem 0.55rem;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-ink);
    border-radius: var(--radius-sm);
    position: relative;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

/* Underline-fill on hover/active — the "stamping an entry" motif */
.main-nav__link::after {
    content: '';
    position: absolute;
    left: 0.85rem; right: 0.85rem; bottom: 0.35rem;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}
.main-nav__link:hover,
.main-nav__link.active {
    color: var(--color-primary);
}
.main-nav__link:hover::after,
.main-nav__link.active::after {
    transform: scaleX(1);
}

.main-nav__toggle .chevron { width: 14px; height: 14px; transition: transform var(--transition-fast); }
.has-submenu:hover .chevron,
.has-submenu:focus-within .chevron { transform: rotate(180deg); }

.has-submenu { position: relative; }
.submenu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    min-width: 230px;
    background: var(--color-white);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}
.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu,
.has-submenu.is-open .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.has-submenu.is-open .chevron { transform: rotate(180deg); }
.submenu li a {
    display: block;
    padding: 0.55rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    color: var(--color-ink);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.submenu li a:hover { background: var(--color-paper-alt); color: var(--color-primary); }
.submenu__all { font-weight: 700; color: var(--color-primary) !important; border-bottom: 1px solid var(--color-line); border-radius: 0 !important; margin-bottom: 0.25rem; padding-bottom: 0.75rem !important; }

/* =======================================================================
   HEADER ACTIONS (CTA + hamburger)
======================================================================= */
.site-header__actions { display: flex; align-items: center; gap: 0.9rem; flex: none; }
.site-header__cta { display: none; }

/* Login — links out to the member portal (system.kpassacco.org) */
.site-header__login {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.site-header__login svg { width: 15px; height: 15px; }
.site-header__login:hover {
    background: var(--color-primary);
    color: var(--color-paper);
}

/* Hamburger icon — animates into an X when open */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    border-radius: var(--radius-sm);
}
.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =======================================================================
   MOBILE OFF-CANVAS MENU
======================================================================= */
.nav-scrim {
    position: fixed;
    inset: 0;
    background: rgba(20, 26, 19, 0.55);
    z-index: 70;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.nav-scrim.is-visible { opacity: 1; }

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100%;
    width: min(85vw, 360px);
    background: var(--color-paper);
    z-index: 80;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
}
.mobile-menu.is-open { transform: translateX(0); }

.mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid var(--color-line);
    background: var(--color-primary);
    color: var(--color-white);
}
.mobile-menu__title { font-weight: 800; }
.mobile-menu__close { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; border-radius: 50%; color: var(--color-white); }
.mobile-menu__close:hover { background: rgba(255,255,255,0.12); }
.mobile-menu__close svg { width: 18px; height: 18px; }

.mobile-menu__list { padding: 0.6rem; flex: 1; }
.mobile-menu__list > li { border-bottom: 1px solid var(--color-line); }
.mobile-menu__list > li > a {
    display: block;
    padding: 0.95rem 0.75rem;
    font-weight: 600;
}
.mobile-menu__list > li > a.active { color: var(--color-primary); }

.mobile-accordion__toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.95rem 0.75rem;
    font-weight: 600;
}
.mobile-accordion__toggle .chevron { width: 16px; height: 16px; transition: transform var(--transition-base); }
.mobile-accordion__toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }

.mobile-accordion__panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    background: var(--color-paper-alt);
    border-radius: var(--radius-sm);
}
.mobile-accordion__panel li a {
    display: block;
    padding: 0.7rem 1.25rem;
    font-size: 0.9rem;
    color: #4a534a;
}
.mobile-accordion__panel li a:hover { color: var(--color-primary); }

.mobile-menu__cta {
    margin: 1rem;
    justify-content: center;
}

.mobile-menu__login {
    margin: 1rem 1rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.85rem 1rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.mobile-menu__login:hover,
.mobile-menu__login:active {
    background: var(--color-primary);
    color: var(--color-paper);
}

/* Lock background scroll while the mobile menu is open */
body.nav-open { overflow: hidden; }

/* =======================================================================
   RESPONSIVE — collapse to desktop nav at 1240px
   (measured minimum need is 1180px: 203px brand + 734px nav +
   203px actions + 40px container padding — 1240px leaves headroom)
======================================================================= */
@media (min-width: 1240px) {
    .main-nav { display: block; }
    .site-header__cta { display: inline-flex; }
    .hamburger { display: none; }
    .mobile-menu, .nav-scrim { display: none; }
}

@media (max-width: 1239px) {
    .brand__tagline { display: none; }
}

@media (max-width: 540px) {
    .topbar__link--email { display: none; }
    .brand__logo { height: 38px; }
}