/* ============================================================
   AFRO VISION - HEADER CSS
   Top bar + Site header + Navigation
   ============================================================ */

/* ── Top Bar ───────────────────────────────────────────────── */
.top-bar {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    padding: 0.5rem 0;
    font-size: var(--font-size-sm);
    position: relative;
    z-index: calc(var(--z-sticky) + 1);
}

.top-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.top-bar__contact {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.top-bar__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-xs);
    text-decoration: none;
    transition: var(--transition-fast);
}

.top-bar__link:hover {
    color: var(--color-accent);
}

.top-bar__link--hotline {
    color: var(--color-accent);
    font-weight: 600;
}

.top-bar__link i {
    font-size: 11px;
    color: var(--color-accent);
}

.top-bar__divider {
    color: rgba(255, 255, 255, 0.2);
    user-select: none;
}

.top-bar__social .social-links {
    gap: var(--space-1);
}

.top-bar__social .social-link {
    width: 28px;
    height: 28px;
    font-size: 11px;
    background: rgba(255, 255, 255, 0.1);
}

.top-bar__social .social-link:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

/* ── Site Header ───────────────────────────────────────────── */
.site-header {
    background-color: var(--color-white);
    box-shadow: 0 2px 20px rgba(13, 27, 62, 0.08);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 4px 30px rgba(13, 27, 62, 0.15);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    padding: 0.875rem 0;
    min-height: 72px;
}

/* ── Logo ──────────────────────────────────────────────────── */
.site-header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
    text-decoration: none;
}

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

.site-header__logo .custom-logo,
.site-logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.site-logo-text {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 2px;
    line-height: 1;
}

.logo-afro {
    font-family: var(--font-heading);
    font-size: 1.625rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.logo-vision {
    display: flex;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 1.625rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    gap: 3px;
}

.logo-africa {
    width: 22px;
    height: 22px;
    fill: var(--color-accent);
    flex-shrink: 0;
}

.logo-tagline {
    font-size: 0.625rem;
    color: var(--color-text-muted);
    line-height: 1.4;
    font-weight: 400;
    border-left: 1px solid var(--color-border);
    padding-left: var(--space-3);
    margin-left: var(--space-2);
    max-width: 130px;
}

/* ── Primary Navigation ────────────────────────────────────── */
.site-header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

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

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: 0.5rem 0.875rem;
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--color-primary);
    text-decoration: none;
    text-transform: uppercase;
    transition: var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.dropdown-arrow {
    font-size: 9px;
    transition: transform 0.25s ease;
    margin-left: 2px;
}

/* ── Dropdown Menus ────────────────────────────────────────── */
.nav-item.has-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(13, 27, 62, 0.15);
    border: 1px solid var(--color-border);
    padding: var(--space-2) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.25s ease;
    z-index: var(--z-dropdown);
    list-style: none;
}

.nav-item.has-dropdown:hover .dropdown-menu,
.nav-item.has-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-item.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu .nav-item {
    width: 100%;
}

.dropdown-menu .nav-link {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
    text-transform: none;
    letter-spacing: 0;
    color: var(--color-text);
    font-weight: 500;
}

.dropdown-menu .nav-link::after { display: none; }

.dropdown-menu .nav-link:hover {
    background: var(--color-off-white);
    color: var(--color-accent);
    padding-left: 1.5rem;
}

/* ── Header CTA ────────────────────────────────────────────── */
.site-header__cta {
    flex-shrink: 0;
}

.btn--header-cta {
    background: var(--color-accent);
    color: var(--color-primary);
    border-color: var(--color-accent);
    font-size: 0.8125rem;
    padding: 0.6875rem 1.375rem;
}

.btn--header-cta:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(245, 166, 35, 0.4);
}

/* ── Mobile Toggle ─────────────────────────────────────────── */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.mobile-menu-toggle:hover {
    border-color: var(--color-accent);
}

.hamburger-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-base);
    transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active .hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Active Navigation State */
.current-menu-item > .nav-link,
.current-page-ancestor > .nav-link,
.current-page-item > .nav-link {
    color: var(--color-accent) !important;
}

.current-menu-item > .nav-link::after,
.current-page-ancestor > .nav-link::after,
.current-page-item > .nav-link::after {
    width: 100% !important;
}