/* ================================================
   CÔNG TY TNHH MTV NAM TRIỆU - LUXURY WEBSITE
   Color: Light theme + Navy & Gold accents
   ================================================ */

/* ==================== CSS CUSTOM PROPERTIES ==================== */
:root {
    --color-primary: #0b1d3a;
    --color-primary-light: #1a3a6b;
    --color-primary-dark: #071428;
    --color-bg: #ffffff;
    --color-bg-alt: #f5f7fa;
    --color-bg-soft: #eef1f6;
    --color-surface: #ffffff;
    --color-surface-alt: #f8f9fc;
    --color-accent: #b8922e;
    --color-accent-light: #d4ad3a;
    --color-accent-dark: #9a7a24;
    --color-text: #1e293b;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-red: #dc2626;
    --color-white: #ffffff;
    --color-black: #000000;

    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.12);
    --shadow-gold: 0 4px 24px rgba(184, 146, 46, 0.2);

    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;

    --container-width: 1280px;
    --header-height: 80px;
    --section-padding: 100px 0;
}

/* ==================== RESET & BASE ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--color-accent);
    color: var(--color-white);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent-dark);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-primary);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }

.text-gold {
    color: var(--color-accent);
}

.section-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 12px;
    position: relative;
    padding-left: 50px;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 2px;
    background: var(--color-accent);
}

.section-heading {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    max-width: 650px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

/* ==================== UTILITY ==================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-alt {
    background-color: var(--color-bg-alt);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-accent:hover {
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-outline:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-white:hover {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.btn-white {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

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

.btn-sm {
    padding: 10px 24px;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ==================== TOP BAR ==================== */
.top-bar {
    background: var(--color-primary);
    padding: 8px 0;
    font-size: 0.85rem;
    position: relative;
    z-index: 1001;
}

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

.top-bar-left {
    display: flex;
    gap: 20px;
    align-items: center;
}

.top-bar-left a {
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-bar-left a:hover {
    color: var(--color-accent-light);
}

.top-bar-left a i {
    font-size: 0.75rem;
    color: var(--color-accent-light);
}

.top-bar-right {
    display: flex;
    gap: 12px;
}

.top-bar-right a {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.75rem;
}

.top-bar-right a:hover {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-right: 12px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.6);
    padding: 3px 10px;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.lang-btn:hover {
    border-color: var(--color-accent-light);
    color: var(--color-accent-light);
}

.lang-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
}

.lang-flag {
    font-size: 0.9rem;
    line-height: 1;
}

.lang-divider {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.7rem;
}

/* ==================== HEADER ==================== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0;
    transition: background 0.3s ease, box-shadow 0.3s ease;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

#header.header-scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

#header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    height: var(--header-height);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1001;
    flex-shrink: 0;
}

.logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-img-congan {
    height: 60px;
    width: 60px;
    object-fit: contain;
}

.logo-img-namtrieu {
    height: 50px;
    width: 50px;
    object-fit: contain;
}

.logo-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footer-logo-img {
    height: 56px;
    width: auto;
    object-fit: contain;
}

.logo-name {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--color-primary);
    white-space: nowrap;
    line-height: 1.1;
}

.logo-slogan {
    display: none !important;
}

/* Navigation */
.main-nav {
    display: flex;
    flex: 1;
    justify-content: center;
    min-width: 0;
}

.nav-list {
    display: flex;
    gap: 2px;
    align-items: center;
    flex-wrap: nowrap;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2px;
    color: var(--color-text);
    border-radius: 4px;
    position: relative;
    white-space: nowrap;
}

.nav-list li {
    flex-shrink: 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-link i {
    font-size: 0.6rem;
    transition: var(--transition);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-accent);
    border-radius: 0 0 8px 8px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.has-dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

.dropdown li a {
    display: block;
    padding: 10px 24px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: var(--transition);
}

.dropdown li a:hover {
    color: var(--color-accent);
    background: var(--color-bg-alt);
    padding-left: 30px;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.search-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.search-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(184, 146, 46, 0.05);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
    transform-origin: center;
}

body.menu-open .menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

body.menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
}

body.menu-open .menu-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== HERO SECTION ==================== */
#hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
}

.hero-swiper {
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 29, 58, 0.75) 0%, rgba(11, 29, 58, 0.5) 50%, rgba(11, 29, 58, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 850px;
    padding: 0 20px;
}

.hero-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--color-accent-light);
    margin-bottom: 24px;
    padding: 8px 24px;
    border: 1px solid rgba(212, 173, 58, 0.4);
    border-radius: 4px;
    background: rgba(184, 146, 46, 0.1);
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 24px;
    text-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
    color: var(--color-white);
}

.hero-title .text-gold {
    color: var(--color-accent-light);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Swiper Custom Styling */
.hero-swiper .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.4);
    opacity: 1;
    transition: var(--transition);
}

.hero-swiper .swiper-pagination-bullet-active {
    background: var(--color-accent-light);
    width: 36px;
    border-radius: 6px;
}

.hero-swiper .swiper-button-prev,
.hero-swiper .swiper-button-next {
    width: 50px;
    height: 50px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--color-white);
    transition: var(--transition);
}

.hero-swiper .swiper-button-prev::after,
.hero-swiper .swiper-button-next::after {
    font-size: 1rem;
}

.hero-swiper .swiper-button-prev:hover,
.hero-swiper .swiper-button-next:hover {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

/* Scroll Down Indicator */
.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    text-align: center;
}

.scroll-down a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-white);
}

.scroll-down-text {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 0.7;
}

.scroll-down i {
    font-size: 1rem;
    animation: bounceDown 1.5s infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ==================== ABOUT SECTION ==================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 1rem;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 32px 0 40px;
}

.feature-box {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition);
}

.feature-box:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 8px;
    color: var(--color-accent-light);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.feature-info h4 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--color-primary);
}

.feature-info p {
    font-size: 0.8rem;
    color: var(--color-accent);
    font-weight: 600;
}

/* About Image */
.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
}

.about-img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.image-border-accent {
    position: absolute;
    top: 20px;
    right: -20px;
    bottom: -20px;
    left: 20px;
    border: 3px solid var(--color-accent);
    border-radius: 12px;
    z-index: -1;
    opacity: 0.4;
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    left: -20px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 28px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 2;
}

.exp-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-accent-light);
    line-height: 1;
}

.exp-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.3;
}

/* ==================== STATS SECTION ==================== */
.stats-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: 40px 20px;
    position: relative;
}

.stat-item::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, rgba(212, 173, 58, 0.3), transparent);
}

.stat-item:last-child::after {
    display: none;
}

.stat-icon {
    font-size: 2rem;
    color: var(--color-accent-light);
    margin-bottom: 16px;
    opacity: 0.8;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1;
    display: inline;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent-light);
    display: inline;
}

.stat-label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

/* ==================== PRODUCTS SECTION ==================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.products-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.product-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-slow);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card .product-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card .product-desc {
    flex: 1;
}

.product-card .product-title {
    min-height: 3.2em;
}

.product-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    transform: scaleX(0);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-image {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(11, 29, 58, 0.7);
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-content {
    padding: 28px;
    position: relative;
}

.product-icon {
    position: absolute;
    top: -24px;
    right: 28px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 8px;
    color: var(--color-white);
    font-size: 1.2rem;
    box-shadow: var(--shadow-gold);
}

.product-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.product-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.product-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.product-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
}

/* Product Count Badge */
.product-count {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 12px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
}

/* Category card cursor */
.cat-card {
    cursor: pointer;
}

/* Sub-products Panel */
.sub-products-panel {
    display: none;
}

.sub-products-panel.active {
    display: block;
    animation: subPanelIn 0.35s ease forwards;
}

@keyframes subPanelIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.sub-products-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--color-border);
}

.sub-products-back {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.sub-products-back:hover {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.sub-products-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
}

.sub-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.sub-product-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
}

.sub-product-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.sub-product-item .sp-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 8px;
    color: var(--color-accent-light);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.sub-product-item .sp-info h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.sub-product-item .sp-info p {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.sub-product-item .sp-arrow {
    margin-left: auto;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    transition: var(--transition);
}

.sub-product-item:hover .sp-arrow {
    color: var(--color-accent);
    transform: translateX(3px);
}

/* ==================== SUBSIDIARIES SECTION ==================== */
.subsidiaries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.subsidiary-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.subsidiary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
}

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

.subsidiary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.subsidiary-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 12px;
    color: var(--color-accent-light);
    font-size: 1.5rem;
}

.subsidiary-location {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-accent);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.subsidiary-location i {
    font-size: 0.75rem;
}

.subsidiary-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.subsidiary-address {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

.subsidiary-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.subsidiary-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.subsidiary-list li::before {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--color-accent);
    font-size: 0.75rem;
}

.subsidiary-badge {
    display: inline-block;
    margin-top: 16px;
    padding: 4px 14px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 4px;
}

/* ==================== NEWS SECTION ==================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.news-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-date {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 14px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.date-day {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1;
}

.date-month {
    font-size: 0.7rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
}

.news-content {
    padding: 24px;
}

.news-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.news-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-meta i {
    color: var(--color-accent);
    font-size: 0.75rem;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.5;
    color: var(--color-primary);
    transition: var(--transition);
}

.news-card:hover .news-title {
    color: var(--color-accent);
}

.news-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-link:hover {
    color: var(--color-accent-dark);
    gap: 12px;
}

.section-action {
    text-align: center;
    margin-top: 50px;
}

/* ==================== CONTACT SECTION ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.required {
    color: var(--color-red);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    outline: none;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(184, 146, 46, 0.1);
    background: var(--color-white);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select option {
    background: var(--color-white);
    color: var(--color-text);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Contact Info */
.contact-info-card {
    background: var(--color-primary);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
}

.contact-info-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(184, 146, 46, 0.15);
    border: 1px solid rgba(184, 146, 46, 0.3);
    border-radius: 8px;
    color: var(--color-accent-light);
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-info-item h4 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--color-white);
}

.contact-info-item p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.contact-map {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    height: 200px;
}

.contact-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ==================== FOOTER ==================== */
#footer {
    background: var(--color-primary);
}

.footer-main {
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo .logo-icon {
    width: 42px;
    height: 42px;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
}

.footer-logo .logo-name {
    font-size: 1.2rem;
    color: var(--color-white);
}

.footer-about {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-heading {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    padding-bottom: 12px;
    position: relative;
    color: var(--color-white);
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-accent);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links li a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-links li a i {
    font-size: 0.6rem;
    color: var(--color-accent);
    transition: var(--transition);
}

.footer-links li a:hover {
    color: var(--color-accent-light);
    padding-left: 4px;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-contact-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact-item i {
    color: var(--color-accent-light);
    font-size: 0.85rem;
    margin-top: 4px;
    flex-shrink: 0;
}

/* Footer Bottom */
.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==================== BACK TO TOP ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border: none;
    border-radius: 50%;
    color: var(--color-accent-light);
    font-size: 1rem;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ==================== FLOATING CONTACT BUTTONS ==================== */
.floating-contacts {
    position: fixed;
    left: 20px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    z-index: 999;
}

.fc-btn {
    position: relative;
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    font-size: 1.25rem;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.fc-btn:hover {
    transform: translateY(-3px) scale(1.06);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3);
}

.fc-phone {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.fc-zalo {
    background: linear-gradient(135deg, #0068ff, #0052cc);
}

.fc-whatsapp {
    background: linear-gradient(135deg, #25d366, #128c7e);
}

.fc-btn svg {
    fill: #fff;
}

.fc-zalo-text {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    color: #fff;
    font-style: italic;
}

.fc-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid #22c55e;
    animation: fcPulse 1.8s ease-out infinite;
    pointer-events: none;
}

@keyframes fcPulse {
    0% { transform: scale(1); opacity: 0.7; }
    100% { transform: scale(1.6); opacity: 0; }
}

.fc-tooltip {
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) translateX(-10px);
    background: var(--color-primary);
    color: #fff;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.fc-tooltip::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-right: 5px solid var(--color-primary);
}

.fc-btn:hover .fc-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

@media (max-width: 768px) {
    .floating-contacts {
        left: 14px;
        bottom: 18px;
        gap: 10px;
    }
    .fc-btn {
        width: 46px;
        height: 46px;
        font-size: 1.05rem;
    }
    .fc-tooltip { display: none; }
}

/* ==================== SEARCH MODAL ==================== */
.search-modal {
    position: fixed;
    inset: 0;
    background: rgba(11, 29, 58, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-modal-content {
    max-width: 600px;
    width: 90%;
    text-align: center;
}

.search-modal-content h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--color-white);
}

.search-close {
    position: absolute;
    top: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--color-white);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-close:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.search-form {
    display: flex;
    gap: 0;
}

.search-form input {
    flex: 1;
    padding: 16px 24px;
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--color-text);
    background: var(--color-white);
    border: 2px solid transparent;
    border-right: none;
    border-radius: 8px 0 0 8px;
    outline: none;
}

.search-form input:focus {
    border-color: var(--color-accent);
}

.search-form button {
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border: 2px solid var(--color-accent);
    border-radius: 0 8px 8px 0;
    color: var(--color-white);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-form button:hover {
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
}

/* ==================== PRODUCT DETAIL MODAL ==================== */
.product-modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    will-change: opacity;
}

.product-modal.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.product-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.product-modal-container {
    position: relative;
    width: 90%;
    max-width: 960px;
    max-height: 90vh;
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    will-change: transform, opacity;
}

.product-modal.active .product-modal-container {
    transform: translateY(0);
    opacity: 1;
}

.product-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text);
    font-size: 1rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.product-modal-close:hover {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.product-modal-body {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    max-height: 90vh;
    overflow-y: auto;
}

.product-modal-image {
    position: relative;
    min-height: 300px;
    background: var(--color-bg-alt);
}

.product-modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-modal-info {
    padding: 40px;
    overflow-y: auto;
    max-height: 90vh;
}

.product-modal-category {
    display: inline-block;
    padding: 4px 14px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 4px;
    margin-bottom: 16px;
}

.product-modal-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

.product-modal-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-modal-specs,
.product-modal-apps {
    margin-bottom: 24px;
}

.product-modal-specs h4,
.product-modal-apps h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.product-modal-specs h4 i,
.product-modal-apps h4 i {
    color: var(--color-accent);
}

.product-modal-specs ul,
.product-modal-apps ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-modal-specs ul li,
.product-modal-apps ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.product-modal-specs ul li::before,
.product-modal-apps ul li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
    margin-top: 7px;
}

.product-modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
    .product-modal-body {
        grid-template-columns: 1fr;
    }

    .product-modal-image {
        min-height: 200px;
        max-height: 250px;
    }

    .product-modal-info {
        padding: 24px;
    }

    .product-modal-title {
        font-size: 1.3rem;
    }

    .product-modal-actions {
        flex-direction: column;
    }

    .product-modal-actions .btn {
        justify-content: center;
    }

    .product-modal-container {
        width: 95%;
        max-height: 95vh;
    }
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}