/* ==========================================================================
   HEADER – top bar + thanh điều hướng chính
   ========================================================================== */

/* ---- Top bar ---- */
.topbar {
    background: var(--color-dark);
    color: #e9edf1;
    font-size: var(--text-topbar);
    line-height: 1;
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 970px;
    height: var(--topbar-height);
    margin-inline: auto;
}

.topbar__item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}

.topbar__item .icon {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

.topbar__contact {
    display: flex;
    align-items: center;
    gap: 24px;
}

.topbar__phones {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.topbar__phones a:hover {
    color: #fff;
    text-decoration: underline;
}

.topbar__divider {
    width: 2px;
    height: 16px;
    background: var(--color-primary);
    margin-inline: 6px;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.social-links__item {
    display: grid;
    place-items: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    color: #fff;
    transition: transform var(--transition), opacity var(--transition);
}

.social-links__item:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

.social-links__item .icon {
    width: 60%;
    height: 60%;
}

.social-links__item--facebook { background: #1877f2; }
.social-links__item--tiktok { background: #010101; }
.social-links__item--youtube { background: #ff0000; }
.social-links__item--facebook .icon { width: 64%; height: 64%; transform: translate(1px, 1px); }

/* ---- Header chính ---- */
.site-header {
    position: relative;
    z-index: 50;
    background: #fff;
    box-shadow: 0 1px 0 rgba(16, 24, 40, 0.06), 0 2px 8px rgba(16, 24, 40, 0.04);
}

.site-header__inner {
    display: flex;
    align-items: center;
    height: var(--header-height);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: none;
}

.site-branding__logo {
    width: 54px;
    height: 54px;
}

.site-branding__name {
    display: block;
    font-size: 29px;
    font-weight: 700;
    line-height: 1;
    color: var(--color-primary);
    letter-spacing: -0.005em;
    text-transform: uppercase;
}

.site-branding__tagline {
    display: block;
    margin-top: 2px;
    font-size: 12.5px;
    line-height: 1.2;
    color: var(--color-heading);
}

.site-navigation {
    margin-left: auto;
}

.menu {
    display: flex;
    align-items: center;
    gap: 22px;
}

.menu__item {
    position: relative;
}

.menu__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    height: var(--header-height);
    font-size: var(--text-nav);
    font-weight: 500;
    color: var(--color-heading);
    white-space: nowrap;
}

.menu__link:hover,
.menu__item:focus-within > .menu__link {
    color: var(--color-primary);
}

.menu__link .icon {
    width: 12px;
    height: 12px;
    stroke-width: 2.4;
}

.menu__item--current > .menu__link {
    font-size: 18px;
    color: var(--color-primary);
}

.menu__item--current > .menu__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 13px;
    height: 3px;
    border-radius: 2px;
    background: var(--color-primary);
}

/* Dropdown */
.sub-menu {
    position: absolute;
    top: calc(100% - 8px);
    left: -16px;
    min-width: 220px;
    padding: 8px 0;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.menu__item--has-children:hover > .sub-menu,
.menu__item--has-children:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.sub-menu a {
    display: block;
    padding: 8px 18px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
}

.sub-menu a:hover {
    background: var(--color-surface-alt);
    color: var(--color-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-left: 26px;
}

.header-search-toggle {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    color: var(--color-heading);
}

.header-search-toggle .icon {
    width: 22px;
    height: 22px;
}

.header-search-toggle:hover {
    color: var(--color-primary);
}

.header-cta {
    height: 40px;
    padding-inline: 16px 18px;
    font-size: 16px;
    font-weight: 500;
    text-transform: uppercase;
}

.header-cta .icon {
    width: 21px;
    height: 21px;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: var(--radius-sm);
    color: var(--color-heading);
}

.menu-toggle .icon {
    width: 26px;
    height: 26px;
}

/* Search overlay */
.search-panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 16px 0;
    background: #fff;
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.search-panel[hidden] {
    display: none;
}

/* Mobile nav extras – ẩn trên desktop */
.mobile-nav__head,
.mobile-nav__footer,
.nav-backdrop {
    display: none;
}

.submenu-toggle,
.menu-close {
    display: none;
}