/* ==========================================
   MEGA MENU & NAVBAR (PC ONLY)
========================================== */
#main-nav {
    background-color: var(--primary-color) !important;
    border-bottom: 3px solid var(--accent-color);
    padding: 1rem 1.5rem !important;
}

#main-nav .navbar-brand {
    font-size: 1.3rem;
    margin-right: 2rem;
}

#main-nav .navbar-nav {
    flex-wrap: wrap !important;
    gap: 0.75rem;
    line-height: 1.6;
}

#main-nav .nav-item {
    display: inline-block;
}

#main-nav .nav-link {
    font-size: 0.95rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    transition: 0.2s;
    white-space: nowrap;
}

.navbar .nav-item .dropdown-menu {
    display: block;
    visibility: hidden;
    opacity: 0;
    margin-top: 0;
    transition: all 0.2s ease-in-out;
}

.navbar .nav-item:hover>.dropdown-menu {
    visibility: visible;
    opacity: 1;
}

.navbar .nav-item>.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
}

.navbar .nav-item.has-megamenu {
    position: static !important;
}

.navbar .dropdown-menu.megamenu {
    display: block !important;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    margin-top: 0;
    padding: 30px 0;
    border-radius: 0 0 12px 12px;
    background: #fff;
    border-top: 2px solid var(--accent-color) !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08) !important;
    visibility: hidden;
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    z-index: 1050;
    transition: opacity 0.4s ease 0.6s, transform 0.4s ease 0.6s, visibility 0s 1s !important;
}

.navbar .dropdown-menu.megamenu::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    width: 100%;
    height: 40px;
    background: transparent;
    z-index: -1;
}

.navbar .nav-item.dropdown:hover .dropdown-menu.megamenu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    transition: opacity 0.3s ease 0s, transform 0.3s ease 0s, visibility 0s 0s !important;
}

.megamenu-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.megamenu-col {
    border-right: 1px dotted #ccc;
    padding: 0 25px;
}

.megamenu-col:last-child {
    border-right: none;
}

.megamenu-title {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 15px;
    padding-bottom: 5px;
}

.megamenu-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: block !important;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.8s cubic-bezier(0, 1, 0, 1), opacity 0.5s ease-out;
}

.megamenu-grid .megamenu-item-block:hover .megamenu-list {
    max-height: 600px;
    opacity: 1;
    margin-top: 10px;
    transition: max-height 0.5s ease-in-out, opacity 0.4s ease-in-out;
}

.megamenu-item {
    display: block;
    padding: 6px 0;
    color: #555;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.85rem;
}

.megamenu-item:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.mm-level-1 {
    font-weight: 500;
    color: #444;
    margin-top: 8px;
    font-size: 0.9rem;
}

.mm-level-2 {
    padding-left: 15px;
    font-size: 0.9rem;
}

.mm-icon {
    font-size: 0.55rem;
    margin-right: 6px;
    color: #888;
    vertical-align: middle;
    display: inline-block;
    transition: transform 0.4s ease, color 0.3s ease;
}

.mm-child-list {
    display: block !important;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    padding-left: 0;
    margin: 0;
    transition: max-height 0.8s cubic-bezier(0, 1, 0, 1), opacity 0.5s ease-out;
}

.megamenu-grid .mm-has-child:hover>.mm-child-list {
    max-height: 400px;
    opacity: 1;
    margin-top: 5px;
    transition: max-height 0.5s ease-in-out, opacity 0.4s ease-in-out;
}

.megamenu-grid .mm-has-child:hover>a>.mm-icon {
    transform: rotate(90deg);
    color: var(--accent-color);
}

.megamenu-grid .title-arrow {
    transition: transform 0.4s ease;
}

.megamenu-grid .megamenu-item-block:hover .title-arrow {
    transform: rotate(180deg);
}

/* ==========================================
   HOVER EFFECTS (PC ONLY - CHỐNG LỖI CẢM ỨNG)
========================================== */
#main-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
}

.result-card:hover,
.hover-box:hover,
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--accent-color);
}

.transition-hover:hover {
    color: var(--accent-color) !important;
    transform: scale(1.15);
}

.hover-zoom:hover {
    transform: scale(1.02);
}

.btn-vhm-main:hover {
    filter: brightness(0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(27, 54, 93, 0.3);
}

.action-item:hover {
    background: var(--primary-light);
}

.contact-btn:hover .icon-wrap {
    transform: scale(1.1);
}

.contact-btn:hover .contact-text {
    opacity: 1;
    transform: translateX(0);
}

.hover-primary:hover {
    color: var(--primary-color) !important;
    text-decoration: underline !important;
}

#searchTab .nav-link:hover {
    background-color: var(--primary-light);
    color: var(--primary-color) !important;
}

.album-grid-2 img:hover {
    transform: scale(1.02);
}

/* ==========================================
   LAYOUT FIXES (PC ONLY)
========================================== */
.col-lg-8 .row>.col-lg-3,
.col-lg-8 .row>.col-md-6 {
    width: 50% !important;
    flex: 0 0 50% !important;
    max-width: 50% !important;
}

.floating-search-bar {
    margin-top: -60px;
}

/* STICKY NAV PC */
#vhm-sticky-nav {
    max-width: 960px !important;
    margin: 20px auto 0 !important;
    left: 0 !important;
    right: 0 !important;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    height: auto;
    min-height: 45px !important;
    top: 85px !important;
}

#dynamic-anchor-nav {
    height: 100%;
    list-style: none;
    padding-left: 0;
}

#dynamic-anchor-nav .nav-item {
    height: 100%;
    display: flex;
    align-items: center;
}

#dynamic-anchor-nav .nav-link {
    color: #475569;
    padding: 5px 10px !important;
    border-radius: 0;
    transition: 0.2s;
    white-space: nowrap;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    border-bottom: 3px solid transparent;
    text-decoration: none;
}

#dynamic-anchor-nav .nav-link i {
    font-size: 0.9rem !important;
    margin-bottom: 2px !important;
    line-height: 1;
}

#dynamic-anchor-nav .nav-link span.nav-text {
    font-size: 0.7rem !important;
    font-weight: 600;
    line-height: 1;
}

#dynamic-anchor-nav .nav-link:hover {
    color: var(--primary-color);
}

#dynamic-anchor-nav .nav-link.active {
    color: var(--primary-color) !important;
    border-bottom: 3px solid var(--primary-color);
    font-weight: 700;
    background: transparent !important;
}

#dynamic-anchor-nav .separator {
    width: 1px;
    height: 20px;
    background-color: #cbd5e1;
    margin: 0 5px;
}

@media (min-width: 1200px) {
    #vhm-sticky-nav {
        max-width: 1140px !important;
    }
}

@media (min-width: 1400px) {
    #vhm-sticky-nav {
        max-width: 1320px !important;
    }
}