/* ==========================================================================
   PORTAL: SITE HEADER, LOGO & NAVIGATION MENU
   ========================================================================== */

/* Header */
.site-header {
    background-color: rgba(26, 23, 21, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 16px 0;
    transition: var(--transition);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrapper a {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--primary);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: rgba(255, 255, 255, 0.80);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 6px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1.5px;
    background-color: var(--primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-cta .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    white-space: nowrap;
}

.cta-text-short {
    display: none;
}

/* Mobile Menu Toggle Button (Nút mở menu phụ) */
.mobile-menu-toggle {
    display: none;
    width: 38px;
    height: 38px;
    border-radius: 9px;
    background: rgba(128, 128, 128, 0.12);
    border: 1px solid rgba(128, 128, 128, 0.25);
    color: var(--text-main, #222222);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    transition: all 0.25s ease;
    padding: 0;
    margin: 0;
    flex-shrink: 0;
    outline: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:active,
.mobile-menu-toggle.active {
    background: var(--primary, #c5a880);
    color: #ffffff;
    border-color: var(--primary, #c5a880);
    transform: scale(1.05);
}

/* Mobile Navigation Backdrop & Drawer (Offcanvas Menu Phụ) */
.mobile-nav-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 8, 8, 0.7);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 86vw;
    height: 100vh;
    background: var(--bg-card, #1a1715);
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: -10px 0 35px rgba(0, 0, 0, 0.65);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    transform: translateX(105%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.mobile-nav-drawer.active {
    transform: translateX(0);
}

.mobile-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(0, 0, 0, 0.2);
}

.mobile-drawer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    min-width: 0;
}

.mobile-drawer-brand img {
    max-height: 34px;
    width: auto;
    border-radius: 8px;
    object-fit: contain;
    flex-shrink: 0;
}

.mobile-drawer-brand .drawer-brand-name {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mobile-drawer-close {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--white);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.mobile-drawer-close:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--primary);
    transform: rotate(90deg);
}

.mobile-drawer-menu {
    list-style: none;
    padding: 16px 12px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.mobile-drawer-item a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.98rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.mobile-drawer-item a i {
    width: 22px;
    text-align: center;
    font-size: 1.05rem;
    color: var(--primary, #c5a880);
    transition: transform 0.2s ease;
}

.mobile-drawer-item a:hover,
.mobile-drawer-item a.active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--primary, #c5a880);
    padding-left: 20px;
}

.mobile-drawer-item a:hover i {
    transform: scale(1.15);
}

.mobile-drawer-footer {
    padding: 16px 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: rgba(0, 0, 0, 0.2);
}

.mobile-drawer-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 11px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.92rem;
    text-decoration: none;
    box-sizing: border-box;
}