/* ========================================
   VNPT CSS VARIABLES - Make header-menu.css independent
   ======================================== */

:root {
    /* Primary Colors */
    --primary-color: #0066CC;           /* VNPT Blue - Màu chính */
    --primary-light: #3399ff;           /* Light Blue */
    --primary-dark: #004499;            /* Dark Blue */
    --vnpt-primary: #0066CC;            /* Same as primary-color for consistency */

    /* Secondary Colors */
    --secondary-color: #00A8CC;         /* VNPT Secondary Blue */
    --secondary-light: #33c4e0;
    --secondary-dark: #007599;

    /* Text Colors */
    --text-primary: #1f2937;            /* Dark Gray - Text chính */
    --text-secondary: #6b7280;          /* Medium Gray - Text phụ */
    --text-light: #9ca3af;              /* Light Gray */

    /* Background Colors */
    --bg-primary: #ffffff;              /* White */
    --bg-secondary: #f9fafb;            /* Light Gray */
    --bg-tertiary: #f3f4f6;             /* Lighter Gray */

    /* Utility Colors */
    --accent-color: #f59e0b;            /* Orange - Điểm nhấn */
    --success-color: #10b981;           /* Green */
    --warning-color: #f59e0b;           /* Orange */
    --error-color: #ef4444;             /* Red */

    /* Borders & Shadows */
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: Georgia, Cambria, 'Times New Roman', serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* ========================================
   VNPT HEADER & MENU STYLES
   Separated from main style.css for better organization
   ======================================== */

/* ========================================
   VNPT HEADER STYLES - SIMPLE STICKY
   ======================================== */

.vnpt-header {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 10001;
    transition: all 0.3s ease;
    will-change: transform, background-color, box-shadow;
}

/* Simple Scrolled State - CHỈ THAY ĐỔI SHADOW, GIỮ NGUYÊN KÍCH THƯỚC */
.vnpt-header.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 4px 32px rgba(0,0,0,0.15);
}

/* ========================================
   HEADER CONTAINER & LAYOUT
   ======================================== */

.vnpt-header .navbar {
    padding: 0.5rem 0;
    min-height: 60px;
    align-items: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.vnpt-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   LOGO STYLES
   ======================================== */

.vnpt-logo,
.vnpt-logo-img {
    height: 50px;
    width: auto;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.navbar-brand:hover .vnpt-logo,
.navbar-brand:hover .vnpt-logo-img {
    transform: scale(1.05);
}

/* ========================================
   NAVIGATION LINKS
   ======================================== */

.navbar-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
    margin: 0 30px;
}

.vnpt-header .nav-link {
    color: #000000 !important;
    font-weight: 700;
    font-size: 15px;
    padding: 0.875rem 1.5rem !important;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    margin: 0 0.25rem;
    text-transform: capitalize;
    white-space: nowrap;
}

/* Hide Bootstrap default dropdown caret */
.vnpt-header .dropdown-toggle::after {
    display: none;
}

/* Custom dropdown chevron styling */
.vnpt-header .nav-link .fa-chevron-down {
    font-size: 12px;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.vnpt-header .nav-link:hover .fa-chevron-down,
.vnpt-header .dropdown:hover .nav-link .fa-chevron-down,
.vnpt-header .mega-dropdown:hover .nav-link .fa-chevron-down,
.vnpt-header .dropdown.show .nav-link .fa-chevron-down,
.vnpt-header .mega-dropdown.show .nav-link .fa-chevron-down {
    color: var(--primary-color);
    transform: rotate(180deg);
}

.vnpt-header .nav-link::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

.vnpt-header .nav-link:hover,
.vnpt-header .nav-link:focus {
    color: var(--primary-color) !important;
    background: transparent !important;
}

.vnpt-header .nav-link:hover::before {
    width: 80%;
}

/* ========================================
   MEGA MENU STYLES
   ======================================== */

.mega-menu {
    position: absolute;
    background: white;
    border: none;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    top: 100%;
    margin-top: 0;
    opacity: 0;
    visibility: hidden;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    transition: all 0.3s ease;
    z-index: 10000;
}

.mega-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mega-menu-wide {
    width: 1200px;
    max-width: calc(100vw - 40px);
}

.mega-menu-simple {
    width: 220px;
    max-width: calc(100vw - 40px);
}

.mega-content {
    padding: 35px 30px;
}

.mega-title {
    font-weight: 700;
    margin-bottom: 18px;
    color: #000000;
    font-size: 17px;
    padding-bottom: 10px;
    text-align: left;
}

.mega-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mega-links li {
    margin-bottom: 5px;
}

.mega-links a {
    color: #000000;
    text-decoration: none;
    padding: 8px 0;
    display: block;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 600;
}

.mega-links a:hover {
    color: var(--vnpt-primary);
    transform: translateX(6px);
    font-weight: 700;
}

/* ========================================
   CATEGORY IMAGES
   ======================================== */

.mega-category-image {
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.mega-category-image:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.category-img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.mega-category-image:hover .category-img {
    transform: scale(1.08);
}

/* Primary color backgrounds */
.mega-category-image[data-category="di-dong"],
.mega-category-image[data-category="internet-tv-camera"],
.mega-category-image[data-category="thiet-bi"],
.mega-category-image[data-category="dich-vu-doanh-nghiep"],
.mega-category-image[data-category="chuyen-doi-so"],
.mega-category-image[data-category="ho-tro-khach-hang"],
.mega-category-image[data-category="cua-hang-dich-vu"],
.mega-category-image[data-category="tai-ve-tien-ich"],
.mega-category-image[data-category="thong-tin-tai-khoan"] {
    background: var(--primary-color);
}

.category-img:not([src]),
.category-img[src=""],
.category-img[src*="placeholder"] {
    display: none;
}

/* Fallback styling for new support menu categories */
.mega-category-image[data-category="ho-tro-khach-hang"]::before {
    content: '\f086'; /* Chat icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40px;
    color: white;
    z-index: 2;
}

.mega-category-image[data-category="cua-hang-dich-vu"]::before {
    content: '\f015'; /* Home/Store icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40px;
    color: white;
    z-index: 2;
}

.mega-category-image[data-category="tai-ve-tien-ich"]::before {
    content: '\f019'; /* Download icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40px;
    color: white;
    z-index: 2;
}

.mega-category-image[data-category="thong-tin-tai-khoan"]::before {
    content: '\f007'; /* User icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40px;
    color: white;
    z-index: 2;
}

/* Gradient backgrounds for new categories */
.mega-category-image[data-category="ho-tro-khach-hang"] {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.mega-category-image[data-category="cua-hang-dich-vu"] {
    background: linear-gradient(135deg, #28a745, #20c997);
}

.mega-category-image[data-category="tai-ve-tien-ich"] {
    background: linear-gradient(135deg, #6f42c1, #e83e8c);
}

.mega-category-image[data-category="thong-tin-tai-khoan"] {
    background: linear-gradient(135deg, #fd7e14, #ffc107);
}

/* ========================================
   DROPDOWN MENUS
   ======================================== */

.vnpt-header .dropdown-menu {
    border: none;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    padding: 0;
    margin-top: 0;
    top: calc(100% + 10px) !important;
    min-width: 280px;
    background: #ffffff;
    z-index: 99999 !important;
}

/* Specific positioning for support menu dropdown */
.vnpt-header .nav-item:nth-child(3) .dropdown-menu,
.vnpt-header .nav-item.dropdown .dropdown-menu {
    top: calc(100% + 10px) !important;
    position: absolute !important;
}

.vnpt-header .dropdown-item {
    padding: 8px 20px;
    border-radius: 0;
    font-size: 14px;
    color: #000000;
    font-weight: 600;
    transition: all 0.2s ease;
    margin-bottom: 5px;
    display: block;
    text-decoration: none;
    border: none;
    background: none;
    border-bottom: 1px solid transparent;
}

.vnpt-header .dropdown-item:hover {
    background: none;
    color: var(--vnpt-primary);
    transform: translateX(6px);
    font-weight: 700;
}

/* ========================================
   RIGHT SIDE ELEMENTS
   ======================================== */

.navbar-end {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-shrink: 0;
    min-width: 280px;
    justify-content: flex-end;
}

/* Hotline */
.hotline-info {
    text-align: right;
    flex-shrink: 0;
}

.hotline-label {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 3px;
    font-weight: 500;
}

.hotline-number {
    font-size: 17px;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
}

.hotline-number:hover {
    color: var(--secondary-color);
    transform: scale(1.05);
}

/* Login Button */
.btn-login {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--primary-color);
    border: 2px solid var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-login:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

/* ========================================
   SEARCH BUTTON & MODAL
   ======================================== */

.vnpt-header .btn-search,
.navbar-end .btn-search,
button.btn-search {
    width: 44px !important;
    height: 44px !important;
    border-radius: 50% !important;
    background: rgba(0,102,204,0.1) !important;
    border: 2px solid var(--primary-color) !important;
    color: var(--primary-color) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: all 0.3s ease !important;
    cursor: pointer !important;
    margin-right: 0.5rem !important;
    box-sizing: border-box !important;
    padding: 0 !important;
    min-width: unset !important;
    min-height: unset !important;
    font-family: inherit !important;
    font-size: 16px !important;
    font-weight: normal !important;
}

.vnpt-header .btn-search:hover,
.navbar-end .btn-search:hover,
button.btn-search:hover {
    background: var(--primary-color) !important;
    color: white !important;
    transform: scale(1.05) !important;
    border-color: var(--primary-color) !important;
}

/* Search Modal */
#searchModal {
    z-index: 999999 !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
}

#searchModal .modal-backdrop {
    z-index: 999998 !important;
    background-color: rgba(0, 0, 0, 0.7) !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
}

#searchModal .modal-dialog {
    z-index: 999999 !important;
    position: relative !important;
    margin: 1.75rem auto !important;
    max-width: 600px !important;
}

#searchModal .modal-content {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.25);
    z-index: 999999 !important;
    position: relative;
    background: white !important;
}

#searchModal .modal-header {
    background: var(--primary-color);
    border: none;
    padding: 1.25rem;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
}

#searchModal .modal-title {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

#searchModal .btn-close {
    background: rgba(255,255,255,0.2) !important;
    border: none !important;
    border-radius: 50% !important;
    width: 40px !important;
    height: 40px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 20px !important;
    color: white !important;
    opacity: 1 !important;
    cursor: pointer !important;
}

#searchModal .btn-close:hover {
    background: rgba(255,255,255,0.3) !important;
    transform: scale(1.1);
    color: white !important;
}

#searchModal .btn-close:focus {
    box-shadow: none !important;
    outline: none !important;
}

#searchModal .modal-body {
    padding: 2rem;
    background: white;
}

.search-input-group {
    position: relative;
    display: flex;
    align-items: center;
    border: 2px solid #e2e8f0;
    border-radius: 50px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.search-input {
    border: none;
    outline: none;
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    background: transparent;
    color: var(--text-primary);
}

.search-input:focus {
    outline: none;
}

.search-input-group:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0,102,204,0.1);
}

.search-btn {
    background: var(--primary-color);
    border: none;
    padding: 1rem 1.5rem;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.search-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* ========================================
   DROPDOWN & MEGA MENU BEHAVIOR
   ======================================== */

.vnpt-header {
    z-index: 10001;
}

.dropdown-menu {
    display: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown-menu.show,
.dropdown.show .dropdown-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-menu {
    display: none;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: all 0.3s ease;
}

.mega-menu.show,
.mega-dropdown.show .mega-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-toggle::after {
    display: none;
}

@media (min-width: 992px) {
    .dropdown:hover .dropdown-menu,
    .mega-dropdown:hover .mega-menu {
        display: block;
        opacity: 1;
        visibility: visible;
    }

    .dropdown:hover .dropdown-menu {
        transform: translateY(0);
    }

    .mega-dropdown:hover .mega-menu {
        transform: translateX(-50%) translateY(0);
    }

    .dropdown:hover .dropdown-toggle .fa-chevron-down,
    .mega-dropdown:hover .nav-link .fa-chevron-down {
        transform: rotate(180deg);
        color: var(--primary-color);
    }

    .dropdown:hover .nav-link,
    .mega-dropdown:hover .nav-link {
        color: var(--primary-color) !important;
    }
}

/* ========================================
   MEGA MENU PERFECT CENTER POSITIONING
   ======================================== */

.navbar-nav .nav-item.mega-dropdown {
    position: relative !important;
    display: inline-block !important;
}

.vnpt-header .navbar-nav .nav-item.mega-dropdown .mega-menu,
.navbar-nav .mega-dropdown .mega-menu,
.mega-dropdown .mega-menu {
    position: absolute !important;
    top: calc(100% + 10px) !important;
    left: 95% !important;
    transform: translateX(-50%) !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    margin-top: 0 !important;
    background: white !important;
    border: none !important;
    border-radius: 8px !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.3s ease !important;
    z-index: 99999 !important;
    width: 1200px !important;
    max-width: calc(100vw - 40px) !important;
}

/* Simple mega menu positioning */
.mega-dropdown .mega-menu-simple {
    width: 220px !important;
    left: -30px !important;
    transform: translateX(0) !important;
}

.vnpt-header .navbar-nav .nav-item.mega-dropdown:hover .mega-menu,
.navbar-nav .mega-dropdown:hover .mega-menu,
.mega-dropdown:hover .mega-menu,
.mega-dropdown.show .mega-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateX(-50%) translateY(0) !important;
    display: block !important;
}

/* Simple mega menu hover state */
.mega-dropdown:hover .mega-menu-simple,
.mega-dropdown.show .mega-menu-simple {
    transform: translateX(0) translateY(0) !important;
}

.mega-menu.show {
    transform: translateX(-50%) translateY(0) !important;
}

.mega-menu-simple.show {
    transform: translateX(0) translateY(0) !important;
}

.navbar-nav .dropdown,
.navbar-nav .mega-dropdown {
    position: relative !important;
}

.navbar-nav .dropdown-menu {
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
}

.vnpt-header .dropdown-menu,
.vnpt-header .mega-menu {
    position: absolute !important;
    top: 100% !important;
    margin-top: 0 !important;
    transform-origin: top center !important;
}

/* ========================================
   LOGO DEBUG & FORCE VISIBILITY
   ======================================== */

.vnpt-header .navbar-brand {
    display: flex !important;
    align-items: center !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.vnpt-header .vnpt-logo,
.vnpt-header .custom-logo {
    display: block !important;
    height: 50px !important;
    width: auto !important;
    max-width: 200px !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.navbar-brand img {
    display: block !important;
    height: 50px !important;
    width: auto !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* ========================================
   MEGA MENU OVERLAY
   ======================================== */

.mega-dropdown::before {
    content: '';
    position: fixed;
    top: 80px;
    left: 0;
    width: 100vw;
    height: calc(100vh - 80px);
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
    pointer-events: none;
}

.mega-dropdown:hover::before,
.mega-dropdown.show::before {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   MEGA MENU 4TH LEVEL SUBMENU
   ======================================== */

.mega-submenu-item {
    position: relative;
}

.mega-submenu-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    font-weight: 700;
}

.mega-submenu-toggle .fa-chevron-right {
    font-size: 11px;
    transition: transform 0.3s ease;
    opacity: 0.8;
    margin-left: 8px;
}

.mega-submenu-item:hover .mega-submenu-toggle .fa-chevron-right {
    transform: rotate(90deg);
    opacity: 1;
    color: var(--vnpt-primary);
}

.mega-submenu {
    position: absolute;
    left: 100%;
    top: 0;
    width: 220px;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    z-index: 10002;
    padding: 12px 0;
    list-style: none;
    margin: 0;
}

.mega-submenu-item:hover .mega-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.mega-submenu li {
    margin: 0;
}

.mega-submenu a {
    display: block;
    padding: 10px 18px;
    color: #000000;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
    border-radius: 0;
}

.mega-submenu a:hover {
    background: var(--vnpt-primary);
    color: white;
    transform: none;
    font-weight: 700;
}

/* Prevent submenu from going off-screen */
.mega-col:last-child .mega-submenu,
.mega-col:nth-last-child(1) .mega-submenu,
.mega-col:nth-last-child(2) .mega-submenu {
    left: auto;
    right: 100%;
    transform: translateX(10px);
}

.mega-col:last-child .mega-submenu-item:hover .mega-submenu,
.mega-col:nth-last-child(1) .mega-submenu-item:hover .mega-submenu,
.mega-col:nth-last-child(2) .mega-submenu-item:hover .mega-submenu {
    transform: translateX(0);
}

.mega-content .row {
    display: flex;
    flex-wrap: wrap;
    margin: 0;
}

.mega-col {
    flex: 1;
    min-width: 0;
    padding: 0 15px;
    width: 20%;
}

.mega-col-single {
    width: 100% !important;
    flex: none !important;
    padding: 0 !important;
}

/* Simple mega menu content styling */
.mega-menu-simple .mega-content {
    padding: 15px 20px;
}

.mega-menu-simple .mega-title {
    font-size: 15px;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.mega-menu-simple .mega-links a {
    padding: 8px 0;
    font-size: 14px;
}

.mega-menu-simple .mega-links {
    margin: 0;
}

.mega-menu-simple .mega-links li {
    margin-bottom: 2px;
}

.mega-menu-simple .mega-links li:last-child {
    margin-bottom: 0;
}

/* ========================================
   MOBILE RESPONSIVE STYLES - IMPROVED LAYOUT
   ======================================== */

@media (max-width: 768px) {
    /* Mobile Header Container - Premium Design */
    .vnpt-header {
        background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%) !important;
        box-shadow: 0 4px 20px rgba(0,102,204,0.08), 0 1px 3px rgba(0,0,0,0.1) !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 1000 !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        border-bottom: 1px solid rgba(0,102,204,0.1) !important;
    }

    .vnpt-header.scrolled {
        box-shadow: 0 8px 32px rgba(0,102,204,0.12), 0 4px 12px rgba(0,0,0,0.15) !important;
        background: rgba(255, 255, 255, 0.95) !important;
        backdrop-filter: blur(20px) saturate(180%) !important;
        -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
        border-bottom: 1px solid rgba(0,102,204,0.15) !important;
    }

    /* Mobile Navbar - Modern Layout */
    .vnpt-header .navbar {
        padding: 1rem 0 !important;
        min-height: 72px !important;
        position: relative !important;
    }

    .vnpt-header .container {
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        padding: 0 1rem !important;
        max-width: 100% !important;
        position: relative !important;
        gap: 0.5rem !important;
    }

    /* LEFT SIDE - Premium Hamburger Menu */
    .navbar-toggler {
        order: 1 !important;
        width: 48px !important;
        height: 48px !important;
        padding: 0 !important;
        border: 2px solid rgba(0,102,204,0.15) !important;
        background: rgba(255,255,255,0.9) !important;
        flex-shrink: 0 !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        border-radius: 12px !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        box-shadow: 0 2px 8px rgba(0,102,204,0.08) !important;
        backdrop-filter: blur(10px) !important;
    }

    .navbar-toggler:hover {
        background: #0066CC !important;
        border-color: #0066CC !important;
        transform: scale(1.05) !important;
        box-shadow: 0 4px 16px rgba(0,102,204,0.25) !important;
    }

    .navbar-toggler:hover .navbar-toggler-icon,
    .navbar-toggler:hover .navbar-toggler-icon::before,
    .navbar-toggler:hover .navbar-toggler-icon::after {
        background: white !important;
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(0,102,204,0.3) !important;
        outline: none !important;
    }

    .navbar-toggler-icon {
        width: 22px !important;
        height: 2.5px !important;
        background: #0066CC !important;
        border-radius: 3px !important;
        position: relative !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        display: block !important;
    }

    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after {
        content: '' !important;
        position: absolute !important;
        width: 22px !important;
        height: 2.5px !important;
        background: #0066CC !important;
        border-radius: 3px !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        left: 0 !important;
    }

    .navbar-toggler-icon::before {
        top: -7px !important;
    }

    .navbar-toggler-icon::after {
        bottom: -7px !important;
    }

    /* Premium Hamburger Animation - Smooth X */
    .navbar-toggler[aria-expanded="true"] {
        background: #0066CC !important;
        border-color: #0066CC !important;
        transform: rotate(90deg) scale(1.1) !important;
        box-shadow: 0 6px 20px rgba(0,102,204,0.3) !important;
    }

    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
        background: transparent !important;
    }

    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before,
    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
        background: white !important;
    }

    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
        top: 0 !important;
        transform: rotate(45deg) !important;
    }

    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
        bottom: 0 !important;
        transform: rotate(-45deg) !important;
    }

    /* CENTER - Logo Design */
    .vnpt-header .navbar-brand {
        order: 2 !important;
        flex: 1 !important;
        display: flex !important;
        justify-content: center !important;
        margin: 0 0.5rem !important;
        z-index: 5 !important;
        text-align: center !important;
    }

    .vnpt-logo,
    .vnpt-logo-img,
    .navbar-brand img {
        height: 40px !important;
        width: auto !important;
        max-width: 120px !important;
        display: block !important;
        filter: drop-shadow(0 1px 2px rgba(0,102,204,0.1)) !important;
    }

    /* RIGHT SIDE - Search Box + Account Icon */
    .navbar-end {
        order: 3 !important;
        display: flex !important;
        align-items: center !important;
        gap: 8px !important;
        flex-shrink: 0 !important;
        z-index: 10 !important;
        min-width: 150px !important;
        justify-content: flex-end !important;
    }

    /* Hide hotline on mobile */
    .hotline-info {
        display: none !important;
    }

    /* Mobile Search Input Box */
    .mobile-search-container {
        position: relative !important;
        flex: 1 !important;
        max-width: 140px !important;
        min-width: 100px !important;
    }

    .mobile-search-container form {
        position: relative !important;
        width: 100% !important;
        margin: 0 !important;
    }

    .mobile-search-input {
        width: 100% !important;
        height: 40px !important;
        border: 2px solid rgba(0,102,204,0.15) !important;
        border-radius: 20px !important;
        background: rgba(255,255,255,0.95) !important;
        padding: 0 38px 0 14px !important;
        font-size: 13px !important;
        color: #374151 !important;
        transition: all 0.3s ease !important;
        backdrop-filter: blur(10px) !important;
        box-shadow: 0 2px 8px rgba(0,102,204,0.08) !important;
        box-sizing: border-box !important;
    }

    .mobile-search-input:focus {
        outline: none !important;
        border-color: #0066CC !important;
        box-shadow: 0 4px 16px rgba(0,102,204,0.15) !important;
        transform: translateY(-1px) !important;
    }

    .mobile-search-input::placeholder {
        color: #9ca3af !important;
        font-size: 12px !important;
        font-weight: 400 !important;
    }

    /* Improve mobile search on smaller screens */
    @media (max-width: 400px) {
        .mobile-search-container {
            max-width: 110px !important;
            min-width: 90px !important;
        }

        .mobile-search-input {
            font-size: 12px !important;
            padding: 0 35px 0 12px !important;
        }

        .mobile-search-input::placeholder {
            font-size: 11px !important;
        }

        .mobile-search-submit {
            width: 32px !important;
            height: 32px !important;
            right: 4px !important;
        }
    }

    .mobile-search-submit {
        position: absolute !important;
        right: 3px !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
        width: 34px !important;
        height: 34px !important;
        border: none !important;
        border-radius: 17px !important;
        background: linear-gradient(135deg, #0066CC 0%, #0052a3 100%) !important;
        color: white !important;
        font-size: 14px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        cursor: pointer !important;
        transition: all 0.3s ease !important;
    }

    .mobile-search-submit:hover {
        background: linear-gradient(135deg, #0052a3 0%, #003d7a 100%) !important;
        transform: translateY(-50%) scale(1.05) !important;
    }

    .mobile-search-submit:active {
        transform: translateY(-50%) scale(0.95) !important;
    }

    /* Hide desktop search button on mobile */
    .vnpt-header .btn-search,
    .navbar-end .btn-search,
    button.btn-search {
        display: none !important;
    }

    /* Mobile Account Icon */
    .btn-login {
        width: 40px !important;
        height: 40px !important;
        border-radius: 20px !important;
        background: rgba(255,255,255,0.95) !important;
        border: 2px solid rgba(0,102,204,0.15) !important;
        color: #0066CC !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        font-size: 16px !important;
        text-decoration: none !important;
        transition: all 0.3s ease !important;
        margin: 0 !important;
        padding: 0 !important;
        box-shadow: 0 2px 8px rgba(0,102,204,0.08) !important;
        backdrop-filter: blur(10px) !important;
    }

    .btn-login:hover {
        background: #0066CC !important;
        color: white !important;
        border-color: #0066CC !important;
        transform: translateY(-1px) scale(1.05) !important;
        box-shadow: 0 4px 16px rgba(0,102,204,0.25) !important;
    }

    .btn-login:active {
        transform: translateY(0) scale(0.98) !important;
    }

    /* Hide login text on mobile */
    .btn-login .btn-text {
        display: none !important;
    }

    /* Mobile search focus improvements */
    .mobile-search-input:focus {
        outline: none !important;
        border-color: #0066CC !important;
        box-shadow: 0 4px 16px rgba(0,102,204,0.15) !important;
        transform: translateY(-1px) !important;
        background: white !important;
    }

    /* Mobile search submit focus */
    .mobile-search-submit:focus {
        outline: 2px solid rgba(0,102,204,0.5) !important;
        outline-offset: 2px !important;
    }

    /* Smooth mobile search interactions */
    .mobile-search-container:focus-within .mobile-search-input {
        border-color: #0066CC !important;
        box-shadow: 0 4px 16px rgba(0,102,204,0.15) !important;
    }

    /* Premium Mobile Menu Collapse */
    .navbar-collapse {
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        right: 0 !important;
        background: rgba(255,255,255,0.98) !important;
        backdrop-filter: blur(20px) saturate(180%) !important;
        -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
        border-top: 1px solid rgba(0,102,204,0.15) !important;
        box-shadow: 0 12px 40px rgba(0,102,204,0.15), 0 4px 12px rgba(0,0,0,0.1) !important;
        margin: 0 !important;
        border-radius: 0 0 20px 20px !important;
        z-index: 999 !important;
        max-height: calc(100vh - 80px) !important;
        overflow-y: auto !important;
        border-left: 1px solid rgba(0,102,204,0.1) !important;
        border-right: 1px solid rgba(0,102,204,0.1) !important;
        border-bottom: 1px solid rgba(0,102,204,0.1) !important;
    }

    .navbar-collapse.show {
        display: block !important;
    }

    /* Premium Mobile Navigation Items */
    .navbar-nav {
        padding: 1rem 0 !important;
        margin: 0 !important;
        list-style: none !important;
        display: block !important;
    }

    .vnpt-header .nav-item {
        border-bottom: 1px solid rgba(0,102,204,0.08) !important;
        margin: 0 !important;
        position: relative !important;
    }

    .vnpt-header .nav-item:last-child {
        border-bottom: none !important;
    }

    .vnpt-header .nav-item::before {
        content: '' !important;
        position: absolute !important;
        left: 0 !important;
        top: 0 !important;
        width: 4px !important;
        height: 100% !important;
        background: linear-gradient(135deg, #0066CC, #00A8CC) !important;
        transform: scaleY(0) !important;
        transform-origin: bottom !important;
        transition: transform 0.3s ease !important;
    }

    .vnpt-header .nav-item:hover::before {
        transform: scaleY(1) !important;
        transform-origin: top !important;
    }

    .vnpt-header .nav-link {
        display: block !important;
        padding: 1.25rem 2rem !important;
        color: #374151 !important;
        font-weight: 600 !important;
        font-size: 16px !important;
        text-decoration: none !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        border-radius: 0 !important;
        position: relative !important;
        background: linear-gradient(90deg, transparent 0%, rgba(0,102,204,0.03) 0%, transparent 0%) !important;
        background-size: 0% 100% !important;
        background-repeat: no-repeat !important;
    }

    .vnpt-header .nav-link:hover,
    .vnpt-header .nav-link:focus {
        color: #0066CC !important;
        background-size: 100% 100% !important;
        padding-left: 2.5rem !important;
        font-weight: 700 !important;
        text-shadow: 0 1px 2px rgba(0,102,204,0.1) !important;
    }

    .vnpt-header .nav-link::before {
        display: none !important;
    }

    /* Mobile Dropdown Chevron */
    .vnpt-header .nav-link .fa-chevron-down {
        float: right !important;
        margin-top: 4px !important;
        font-size: 12px !important;
        transition: transform 0.3s ease !important;
    }

    .vnpt-header .dropdown.show .nav-link .fa-chevron-down,
    .vnpt-header .mega-dropdown.show .nav-link .fa-chevron-down {
        transform: rotate(180deg) !important;
    }

    /* Premium Mobile Mega Menu */
    .mega-menu,
    .mega-menu-wide,
    .mega-menu-simple {
        position: static !important;
        width: 100% !important;
        margin: 0 !important;
        background: linear-gradient(135deg, rgba(250,251,255,0.9) 0%, rgba(248,250,252,0.95) 100%) !important;
        backdrop-filter: blur(10px) !important;
        border: none !important;
        border-radius: 0 !important;
        box-shadow: inset 0 1px 0 rgba(255,255,255,0.5), inset 0 -1px 0 rgba(0,102,204,0.1) !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        display: none !important;
        border-left: 3px solid rgba(0,102,204,0.15) !important;
    }

    .mega-menu.show,
    .mega-dropdown.show .mega-menu {
        display: block !important;
        animation: slideDownFade 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    }

    @keyframes slideDownFade {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .mega-content {
        padding: 1.5rem 2rem !important;
    }

    .mega-content .row {
        display: block !important;
        margin: 0 !important;
    }

    .mega-col {
        width: 100% !important;
        margin-bottom: 2rem !important;
        padding: 0 !important;
        position: relative !important;
    }

    .mega-col:last-child {
        margin-bottom: 0 !important;
    }

    .mega-col::before {
        content: '' !important;
        position: absolute !important;
        top: 0 !important;
        left: -2rem !important;
        width: 3px !important;
        height: 0 !important;
        background: linear-gradient(135deg, #0066CC, #00A8CC) !important;
        transition: height 0.4s ease !important;
    }

    .mega-col:hover::before {
        height: 100% !important;
    }

    /* Hide category images on mobile */
    .mega-category-image {
        display: none !important;
    }

    .mega-title {
        font-size: 16px !important;
        color: #0066CC !important;
        font-weight: 700 !important;
        margin-bottom: 1rem !important;
        padding: 0.75rem 1rem !important;
        background: rgba(0,102,204,0.05) !important;
        border-radius: 8px !important;
        position: relative !important;
        border-left: 4px solid #0066CC !important;
        text-transform: uppercase !important;
        letter-spacing: 0.5px !important;
        font-size: 14px !important;
    }

    .mega-title::before {
        content: '▼' !important;
        position: absolute !important;
        right: 1rem !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
        font-size: 10px !important;
        color: rgba(0,102,204,0.6) !important;
    }

    .mega-links {
        list-style: none !important;
        padding: 0 !important;
        margin: 0 !important;
        background: rgba(255,255,255,0.5) !important;
        border-radius: 8px !important;
        padding: 0.5rem !important;
    }

    .mega-links li {
        margin: 0 !important;
        border-radius: 6px !important;
        overflow: hidden !important;
        margin-bottom: 2px !important;
    }

    .mega-links li:last-child {
        margin-bottom: 0 !important;
    }

    .mega-links a {
        display: block !important;
        padding: 0.75rem 1rem !important;
        color: #6b7280 !important;
        text-decoration: none !important;
        font-size: 14px !important;
        font-weight: 500 !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        position: relative !important;
        background: linear-gradient(90deg, transparent 0%, rgba(0,102,204,0.05) 0%, transparent 0%) !important;
        background-size: 0% 100% !important;
        background-repeat: no-repeat !important;
        border-left: 3px solid transparent !important;
    }

    .mega-links a::before {
        content: '◦' !important;
        position: absolute !important;
        left: 0.5rem !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
        color: #d1d5db !important;
        transition: all 0.4s ease !important;
        font-size: 12px !important;
    }

    .mega-links a:hover {
        color: #0066CC !important;
        background-size: 100% 100% !important;
        font-weight: 600 !important;
        border-left-color: #0066CC !important;
        padding-left: 1.25rem !important;
        transform: translateX(3px) !important;
    }

    .mega-links a:hover::before {
        color: #0066CC !important;
        content: '▶' !important;
        animation: pulse 1s infinite !important;
    }

    @keyframes pulse {
        0%, 100% { opacity: 1; transform: translateY(-50%) scale(1); }
        50% { opacity: 0.7; transform: translateY(-50%) scale(1.1); }
    }

    /* Mobile Simple Dropdown */
    .vnpt-header .dropdown-menu {
        position: static !important;
        width: 100% !important;
        margin: 0 !important;
        background: #f8fafc !important;
        border: none !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        padding: 0.5rem 1.5rem !important;
        display: none !important;
    }

    .vnpt-header .dropdown.show .dropdown-menu {
        display: block !important;
    }

    .vnpt-header .dropdown-item {
        display: block !important;
        padding: 0.75rem 0 !important;
        color: #6b7280 !important;
        font-weight: 400 !important;
        font-size: 14px !important;
        text-decoration: none !important;
        border-bottom: none !important;
        background: none !important;
        transition: all 0.3s ease !important;
        position: relative !important;
        padding-left: 1rem !important;
    }

    .vnpt-header .dropdown-item::before {
        content: '•' !important;
        position: absolute !important;
        left: 0 !important;
        color: #d1d5db !important;
    }

    .vnpt-header .dropdown-item:hover {
        color: #0066CC !important;
        background: none !important;
        transform: none !important;
        padding-left: 1.5rem !important;
    }

    .vnpt-header .dropdown-item:hover::before {
        color: #0066CC !important;
    }

    /* Mobile Submenu */
    .mega-submenu {
        position: static !important;
        width: 100% !important;
        background: #ffffff !important;
        border: none !important;
        border-radius: 6px !important;
        margin: 0.5rem 0 !important;
        padding: 0.5rem 0 !important;
        border-left: 3px solid #e0e7ff !important;
        box-shadow: inset 0 0 0 1px #f3f4f6 !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        list-style: none !important;
    }

    .mega-submenu li {
        margin: 0 !important;
    }

    .mega-submenu a {
        display: block !important;
        padding: 0.5rem 1rem !important;
        font-size: 13px !important;
        color: #9ca3af !important;
        font-weight: 400 !important;
        text-decoration: none !important;
        transition: all 0.3s ease !important;
        padding-left: 1.5rem !important;
    }

    .mega-submenu a::before {
        content: '◦' !important;
        position: absolute !important;
        left: 1rem !important;
        color: #d1d5db !important;
    }

    .mega-submenu a:hover {
        color: #6b7280 !important;
        background: rgba(0,102,204,0.05) !important;
        transform: none !important;
        font-weight: 500 !important;
    }

    /* Premium Mobile Search Modal */
    #searchModal .modal-dialog {
        margin: 1rem !important;
        max-width: calc(100vw - 2rem) !important;
        transform: scale(0.9) !important;
        transition: transform 0.3s ease !important;
    }

    #searchModal.show .modal-dialog {
        transform: scale(1) !important;
    }

    #searchModal .modal-content {
        border-radius: 20px !important;
        box-shadow: 0 20px 60px rgba(0,102,204,0.2) !important;
        border: 1px solid rgba(0,102,204,0.1) !important;
        overflow: hidden !important;
    }

    #searchModal .modal-header {
        background: linear-gradient(135deg, #0066CC 0%, #0052a3 100%) !important;
        padding: 1.5rem !important;
    }

    #searchModal .modal-body {
        padding: 2rem !important;
        background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%) !important;
    }

    .search-input-group {
        border-radius: 30px !important;
        box-shadow: 0 4px 20px rgba(0,102,204,0.1) !important;
        border: 2px solid rgba(0,102,204,0.1) !important;
        background: white !important;
        transition: all 0.3s ease !important;
    }

    .search-input-group:focus-within {
        border-color: #0066CC !important;
        box-shadow: 0 8px 30px rgba(0,102,204,0.2) !important;
        transform: translateY(-2px) !important;
    }

    .search-input {
        padding: 1rem 1.5rem !important;
        font-size: 16px !important;
        border: none !important;
        background: transparent !important;
    }

    .search-btn {
        padding: 1rem 1.5rem !important;
        min-width: 60px !important;
        background: linear-gradient(135deg, #0066CC 0%, #0052a3 100%) !important;
        border-radius: 25px !important;
        margin: 4px !important;
        transition: all 0.3s ease !important;
    }

    .search-btn:hover {
        transform: scale(1.05) !important;
        box-shadow: 0 4px 15px rgba(0,102,204,0.3) !important;
    }

    .suggestions-tags {
        gap: 0.75rem !important;
        margin-top: 1.5rem !important;
    }

    .suggestion-tag {
        font-size: 13px !important;
        padding: 0.5rem 1rem !important;
        border-radius: 20px !important;
        background: linear-gradient(135deg, rgba(0,102,204,0.1) 0%, rgba(0,168,204,0.1) 100%) !important;
        border: 1px solid rgba(0,102,204,0.2) !important;
        transition: all 0.3s ease !important;
    }

    .suggestion-tag:hover {
        transform: translateY(-2px) scale(1.05) !important;
        box-shadow: 0 4px 15px rgba(0,102,204,0.2) !important;
        background: linear-gradient(135deg, #0066CC 0%, #00A8CC 100%) !important;
        color: white !important;
    }

    /* Hide desktop-only elements */
    .mega-dropdown::before,
    .vnpt-header .navbar-nav .nav-item.dropdown::before,
    .vnpt-header .navbar-nav .nav-item.mega-dropdown::before {
        display: none !important;
    }

    /* Premium Mobile Menu Animations */
    .navbar-collapse {
        transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1) !important;
        transform: translateY(-20px) scale(0.95) !important;
        opacity: 0 !important;
    }

    .navbar-collapse.show {
        transform: translateY(0) scale(1) !important;
        opacity: 1 !important;
        animation: menuSlideIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) !important;
    }

    .navbar-collapse.collapsing {
        transform: translateY(-10px) scale(0.98) !important;
        opacity: 0.3 !important;
    }

    @keyframes menuSlideIn {
        0% {
            transform: translateY(-20px) scale(0.95);
            opacity: 0;
        }
        60% {
            transform: translateY(2px) scale(1.02);
            opacity: 0.8;
        }
        100% {
            transform: translateY(0) scale(1);
            opacity: 1;
        }
    }

    /* Mobile Dropdown Toggle Functionality */
    .vnpt-header .nav-item.dropdown,
    .vnpt-header .nav-item.mega-dropdown {
        position: relative !important;
    }

    .vnpt-header .nav-item.dropdown .nav-link,
    .vnpt-header .nav-item.mega-dropdown .nav-link {
        cursor: pointer !important;
        user-select: none !important;
    }

    /* Mobile menu body lock */
    body.mobile-menu-open {
        overflow: hidden !important;
        position: fixed !important;
        width: 100% !important;
    }

    /* Improved mobile submenu toggle */
    .mega-submenu-toggle {
        cursor: pointer !important;
        user-select: none !important;
    }

    .mega-submenu-toggle:hover .fa-chevron-right {
        color: #0066CC !important;
    }

    /* Mobile menu item active states */
    .vnpt-header .nav-item.dropdown.show .nav-link,
    .vnpt-header .nav-item.mega-dropdown.show .nav-link {
        background: rgba(0,102,204,0.08) !important;
        color: #0066CC !important;
        font-weight: 600 !important;
    }

    /* Mobile menu performance optimizations */
    .navbar-collapse,
    .mega-menu,
    .dropdown-menu {
        will-change: transform, opacity !important;
        backface-visibility: hidden !important;
        -webkit-backface-visibility: hidden !important;
    }

    /* Touch-friendly mobile interactions */
    .vnpt-header .nav-link,
    .vnpt-header .dropdown-item,
    .mega-links a,
    .mega-submenu a {
        -webkit-tap-highlight-color: rgba(0,102,204,0.2) !important;
        tap-highlight-color: rgba(0,102,204,0.2) !important;
    }

    /* Mobile menu z-index fix */
    .navbar-collapse {
        z-index: 1001 !important;
    }

    .mega-menu,
    .dropdown-menu {
        z-index: 1002 !important;
    }

    /* Premium Mobile Finishing Touches */
    .vnpt-header::after {
        content: '' !important;
        position: absolute !important;
        bottom: 0 !important;
        left: 0 !important;
        width: 100% !important;
        height: 1px !important;
        background: linear-gradient(90deg, transparent 0%, rgba(0,102,204,0.3) 50%, transparent 100%) !important;
        opacity: 0 !important;
        transition: opacity 0.3s ease !important;
    }

    .vnpt-header.scrolled::after {
        opacity: 1 !important;
    }

    /* Body overlay when mobile menu is open */
    body.mobile-menu-open::before {
        content: '' !important;
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        background: rgba(0,102,204,0.1) !important;
        backdrop-filter: blur(2px) !important;
        z-index: 999 !important;
        animation: overlayFadeIn 0.3s ease !important;
    }

    @keyframes overlayFadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* Improved mobile touch feedback */
    .navbar-toggler,
    .btn-search,
    .btn-login,
    .vnpt-header .nav-link {
        -webkit-tap-highlight-color: rgba(0,102,204,0.2) !important;
        user-select: none !important;
        -webkit-user-select: none !important;
    }

    /* Mobile menu smooth scrolling */
    .navbar-collapse {
        scroll-behavior: smooth !important;
        -webkit-overflow-scrolling: touch !important;
    }

    /* Add subtle mobile header glow */
    .vnpt-header.scrolled {
        position: relative !important;
    }

    .vnpt-header.scrolled::before {
        content: '' !important;
        position: absolute !important;
        top: -2px !important;
        left: 0 !important;
        width: 100% !important;
        height: 2px !important;
        background: linear-gradient(90deg, #0066CC 0%, #00A8CC 50%, #0066CC 100%) !important;
        animation: shimmer 2s infinite linear !important;
    }

    @keyframes shimmer {
        0% { transform: translateX(-100%); }
        100% { transform: translateX(100%); }
    }
}

/* Tablet optimization (769px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .vnpt-header .container {
        padding: 0 20px !important;
    }

    .mega-menu-wide {
        width: 95vw !important;
        max-width: 1000px !important;
    }

    .navbar-end {
        gap: 1.5rem !important;
    }

    .vnpt-header .nav-link {
        padding: 0.75rem 1.25rem !important;
        font-size: 14px !important;
    }

    .hotline-number {
        font-size: 15px !important;
    }
}

/* Desktop styles - reset mobile overrides */
@media (min-width: 769px) {
    /* Reset mobile positioning for desktop */
    .vnpt-header .navbar-brand {
        position: static !important;
        transform: none !important;
        order: 0 !important;
        flex: none !important;
        margin: 0 !important;
    }

    .navbar-toggler {
        order: 0 !important;
        margin-right: 0 !important;
    }

    .navbar-end {
        order: 0 !important;
        margin-left: 0 !important;
        min-width: 280px !important;
        justify-content: flex-end !important;
        gap: 2rem !important;
    }

    /* Hide mobile search container on desktop */
    .mobile-search-container {
        display: none !important;
    }

    /* Desktop login button - show text */
    .btn-login {
        width: auto !important;
        height: auto !important;
        padding: 0.875rem 1.5rem !important;
        background: var(--primary-color) !important;
        border: 2px solid var(--primary-color) !important;
        color: white !important;
        border-radius: 25px !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 0.5rem !important;
        font-weight: 700 !important;
        font-size: 14px !important;
        white-space: nowrap !important;
        box-shadow: none !important;
        backdrop-filter: none !important;
    }

    .btn-login:hover {
        background: var(--secondary-color) !important;
        border-color: var(--secondary-color) !important;
        color: white !important;
        transform: translateY(-2px) !important;
        box-shadow: 0 4px 12px rgba(0,102,204,0.2) !important;
    }

    .btn-login .btn-text {
        display: inline !important;
    }

    /* Desktop search button */
    .vnpt-header .btn-search {
        width: 44px !important;
        height: 44px !important;
        border-radius: 50% !important;
        background: rgba(0,102,204,0.1) !important;
        border: 2px solid var(--primary-color) !important;
        color: var(--primary-color) !important;
        font-size: 16px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        transition: all 0.3s ease !important;
        box-shadow: none !important;
        backdrop-filter: none !important;
    }

    .vnpt-header .btn-search:hover {
        background: var(--primary-color) !important;
        color: white !important;
        transform: scale(1.05) !important;
    }

    /* Show hotline on desktop */
    .hotline-info {
        display: block !important;
    }
}

/* ========================================
   SEARCH SUGGESTIONS
   ======================================== */

.search-suggestions {
    margin-top: 2rem;
}

.suggestions-title {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 1rem;
    font-weight: 600;
}

.suggestions-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.suggestion-tag {
    background: rgba(0,102,204,0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(0,102,204,0.2);
    transition: all 0.3s ease;
}

.suggestion-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,102,204,0.2);
}

/* ========================================
   UNIVERSAL OVERLAY FOR DROPDOWNS
   ======================================== */

.vnpt-header .navbar-nav .nav-item.dropdown::before,
.vnpt-header .navbar-nav .nav-item.mega-dropdown::before {
    content: '';
    position: fixed;
    top: 80px;
    left: 0;
    width: 100vw;
    height: calc(100vh - 80px);
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
    pointer-events: none;
}

.vnpt-header .navbar-nav .nav-item.dropdown:hover::before,
.vnpt-header .navbar-nav .nav-item.mega-dropdown:hover::before,
.vnpt-header .navbar-nav .nav-item.dropdown.show::before,
.vnpt-header .navbar-nav .nav-item.mega-dropdown.show::before {
    opacity: 1;
    visibility: visible;
}

/* Hide overlays on mobile */
@media (max-width: 991px) {
    .vnpt-header .navbar-nav .nav-item.dropdown::before,
    .vnpt-header .navbar-nav .nav-item.mega-dropdown::before {
        display: none !important;
    }
}

/* Modal backdrop fixes */
body.modal-open .vnpt-header {
    z-index: 1040 !important;
}

/* Ensure search modal is above everything */
body.modal-open {
    overflow: hidden;
}

.modal-backdrop {
    z-index: 999998 !important;
}

#searchModal .btn-close i {
    font-size: 16px !important;
}