/* ==========================================================================
   HEADER — topbar + thanh điều hướng chính
   Nền full-width, nội dung nằm trong .container.
   ========================================================================== */

/* ---------- Topbar ---------- */
.topbar {
    background: var(--color-white);
    font-size: var(--fs-xs);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: var(--topbar-h);
    border-bottom: 1px solid #e3ebf2;
}

.topbar__company {
    font-family: var(--font-heading);
    font-size: 14.5px;
    font-weight: 700;
    letter-spacing: -0.015em;
    text-transform: uppercase;
    color: var(--color-heading);
}

.topbar__slogan {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    letter-spacing: -0.01em;
    color: #6f86a3;
}

.topbar__slogan span + span::before {
    content: '|';
    margin-right: 10px;
    color: #b7c7d7;
}

/* ---------- Header chính ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.97);
    transition: box-shadow var(--dur) var(--ease);
}

.site-header.is-scrolled {
    box-shadow: 0 6px 20px rgba(0, 58, 102, 0.08);
}

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

.site-branding {
    flex-shrink: 0;
    display: block;
}

.site-branding img {
    width: auto;
    height: 80px;
}

/* ---------- Menu ---------- */
.site-navigation {
    margin-left: 52px;
}

.menu {
    display: flex;
    align-items: center;
    gap: 47px;
    list-style: none;
    padding: 0;
}

.menu > li {
    position: relative;
}

.menu a {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    font-size: var(--fs-nav);
    font-weight: 500;
    letter-spacing: -0.01em;
    color: #0b3f6e;
}

.menu a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 4px;
    height: 2px;
    background: var(--color-orange);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur) var(--ease);
}

.menu a:hover,
.menu .current-menu-item > a {
    color: var(--color-primary);
}

.menu a:hover::after,
.menu .current-menu-item > a::after {
    transform: scaleX(1);
}

/* ---------- Hotline ---------- */
.header-hotline {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
    font-family: var(--font-heading);
    font-size: 20.5px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-heading);
    white-space: nowrap;
}

.header-hotline__icon {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(180deg, var(--color-orange-400), var(--color-orange-600));
    color: var(--color-white);
    box-shadow: 0 4px 12px rgba(234, 104, 24, 0.3);
}

.header-hotline__icon .icon {
    font-size: 19px;
}

.header-hotline:hover {
    color: var(--color-orange);
}

/* ---------- Nút menu mobile ---------- */
.menu-toggle {
    display: none;
    place-items: center;
    width: 46px;
    height: 46px;
    margin-left: 12px;
    border-radius: var(--radius-sm);
    color: var(--color-heading);
    box-shadow: inset 0 0 0 1px var(--color-border);
}

.menu-toggle .icon {
    font-size: 20px;
}

.menu-toggle .icon-close {
    display: none;
}

.menu-toggle[aria-expanded='true'] .icon-open {
    display: none;
}

.menu-toggle[aria-expanded='true'] .icon-close {
    display: block;
}

/* Khối phụ chỉ hiện trong menu mobile */
.mobile-nav__extra {
    display: none;
}