/* Reset và Base Styles */
/* CSS Reset & Performance Optimization */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Performance optimizations */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Reduce repaints and reflows */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* GPU acceleration for animations */
.hero-particles,
.product-card,
.tech-card,
.support-card {
    transform: translateZ(0);
    will-change: transform;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Utility Classes */
.gradient-text {
    background: linear-gradient(135deg, #f59e0b, #eab308);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.white-text {
    color: white;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-brand .logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(245, 158, 11, 0.5);
}

.nav-brand .brand-text h3 {
    color: #f59e0b;
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

.nav-brand .brand-text span {
    color: #f59e0b;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #f59e0b;
}

.nav-toggle {
    display: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1f2937 0%, #111827 50%, #7c2d12 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(234, 179, 8, 0.05) 100%);
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-particles::before {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(245, 158, 11, 0.3);
    border-radius: 50%;
    animation: float 3s ease-in-out infinite;
    top: 20%;
    left: 10%;
}

.hero-particles::after {
    content: '';
    position: absolute;
    width: 1px;
    height: 1px;
    background: rgba(245, 158, 11, 0.5);
    border-radius: 50%;
    animation: float 4s ease-in-out infinite reverse;
    top: 60%;
    right: 20%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-badges {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.badge.premium {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge.vietnam {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
}

.hero-description {
    font-size: 1.25rem;
    color: #d1d5db;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #f59e0b, #eab308);
    color: #000;
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(245, 158, 11, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #f59e0b;
    border: 2px solid #f59e0b;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: #f59e0b;
    color: #000;
    transform: translateY(-2px);
}

.hero-features {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.hero-features .feature {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #d1d5db;
    font-size: 14px;
}

.hero-features .feature i {
    color: #22c55e;
}

/* Stats Dashboard - FIXED */
.stats-dashboard {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: float 6s ease-in-out infinite;

}

.dashboard-header {
    text-align: center;
    margin-bottom: 30px;
}

.dashboard-header h3 {
    color: white;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
}

.dashboard-header p {
    color: #d1d5db;
    font-size: 14px;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 30px;
}

.stat-item {
    text-align: center;
}

/* Fixed stat numbers to show correct values */
.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: white;
    margin-bottom: 10px;
}

.stars {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 10px;
}

.stars i {
    color: #fbbf24;
    font-size: 16px;
}

/* Fixed progress bars to show correct percentages */
.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    border-radius: 4px;
    transition: width 2s ease-out;
    animation: progressLoad 2s ease-out 0.5s both;
}

.progress-fill.blue {
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
}

.progress-fill.purple {
    background: linear-gradient(90deg, #8b5cf6, #7c3aed);
}

.stat-label {
    color: #d1d5db;
    font-size: 14px;
    font-weight: 500;
}

.additional-stats {
    display: flex;
    justify-content: space-around;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 20px;
}

.add-stat {
    text-align: center;
}

/* Fixed additional stat numbers */
.add-stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #f59e0b;
    margin-bottom: 5px;
}

.add-stat-label {
    color: #d1d5db;
    font-size: 12px;
}

/* Products Section */
.products {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #fff7ed 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: linear-gradient(135deg, #ffffff 0%, rgba(254, 243, 199, 0.5) 100%);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(245, 158, 11, 0.1);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    padding: 20px;
    text-align: center;
    background: linear-gradient(135deg, #ffffff 0%, #fefbf3 100%);
}

.product-image img {
    width: 100%;
    max-width: 150px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

.product-badges {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.badge.bestseller {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.badge.new {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.badge.sold {
    background: linear-gradient(135deg, #f59e0b, #eab308);
    color: #000;
    font-weight: 700;
}

.product-content {
    padding: 20px;
}

.product-header {
    margin-bottom: 15px;
}

.product-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 8px;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-rating .stars {
    display: flex;
    gap: 2px;
}

.product-rating span {
    color: #6b7280;
    font-size: 14px;
}

.product-description {
    color: #6b7280;
    margin-bottom: 20px;
    line-height: 1.7;
}

.product-price {
    font-size: 2rem;
    font-weight: 800;
    color: #22c55e;
    margin-bottom: 25px;
}

.product-features {
    margin-bottom: 30px;
}

.product-features .feature {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.product-features .feature i {
    color: #22c55e;
    font-size: 16px;
}

.product-features .feature span {
    color: #4b5563;
    font-size: 15px;
}

.btn-product {
    width: 100%;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    font-size: 18px;
    padding: 18px;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(34, 197, 94, 0.3);
}

.btn-product:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(34, 197, 94, 0.4);
}

.btn-product.blue {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.btn-product.blue:hover {
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.4);
}

/* Technology Section */
.technology {
    padding: 120px 0;
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    color: white;
}

.technology .section-badge {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.technology .section-header h2 {
    color: white;
}

.technology .section-header p {
    color: #d1d5db;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}

.tech-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
}

.tech-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(245, 158, 11, 0.3);
}

.tech-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #f59e0b, #eab308);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.tech-icon i {
    font-size: 32px;
    color: #000;
}

.tech-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: white;
}

.tech-card p {
    color: #d1d5db;
    line-height: 1.7;
}

.before-after {
    text-align: center;
}

.before-after-header {
    margin-bottom: 40px;
}

.before-after-header h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.before-after-header p {
    color: #d1d5db;
    font-size: 1.1rem;
}

.before-after-image {
    max-width: 800px;
    margin: 0 auto;
}

.before-after-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.disclaimer {
    margin-top: 20px;
    color: #9ca3af;
    font-size: 14px;
    font-style: italic;
}

/* Reviews Section */
.reviews {
    padding: 120px 0;
    background: linear-gradient(135deg, #fef3c7 0%, #fbbf24 100%);
}

.reviews .section-badge {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.review-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #f59e0b, #eab308);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: #000;
}

.reviewer-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 5px;
}

.verified {
    color: #22c55e;
    font-size: 12px;
    font-weight: 500;
}

.verified i {
    font-size: 14px;
}

.reviewer-info p {
    color: #6b7280;
    font-size: 14px;
}

.review-rating {
    margin-bottom: 15px;
}

.review-rating i {
    color: #fbbf24;
    font-size: 16px;
    margin-right: 2px;
}

.review-text {
    color: #4b5563;
    line-height: 1.7;
    font-style: italic;
}

.stats-section {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 60px 40px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.stats-section .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stats-section .stat-item {
    color: #1f2937;
}

.stats-section .stat-item i {
    font-size: 40px;
    color: #f59e0b;
    margin-bottom: 15px;
}

.stats-section .stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: #1f2937;
    margin-bottom: 10px;
}

.stats-section .stat-label {
    color: #4b5563;
    font-weight: 600;
}

/* CTA Section */
.cta {
    padding: 120px 0;
    background: linear-gradient(135deg, #1f2937 0%, #111827 50%, #7c2d12 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(234, 179, 8, 0.05) 100%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 10;
}

.cta-content .section-badge {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
    margin-bottom: 30px;
}

.cta-content h2 {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
}

.cta-content p {
    font-size: 1.25rem;
    color: #d1d5db;
    max-width: 800px;
    margin: 0 auto 50px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.btn.large {
    padding: 20px 40px;
    font-size: 18px;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-features .feature {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #d1d5db;
    font-size: 14px;
}

.cta-features .feature i {
    color: #22c55e;
    font-size: 16px;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 400px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.brand-logo img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid rgba(245, 158, 11, 0.5);
}

.brand-logo .brand-text h3 {
    font-size: 24px;
    font-weight: 700;
    color: #f59e0b;
    margin: 0;
}

.brand-logo .brand-text span {
    font-size: 12px;
    color: #f59e0b;
    font-weight: 500;
    letter-spacing: 2px;
}

.footer-brand p {
    color: #d1d5db;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: #f59e0b;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #f59e0b;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: #9ca3af;
}

.footer-bottom span {
    color: #f59e0b;
}

/* Animations - FIXED */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes progressLoad {
    0% {
        width: 0%;
    }
    100% {
        width: inherit;
    }
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #f59e0b, #eab308);
    color: #000;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 6px 25px rgba(245, 158, 11, 0.4);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        border-top: 1px solid rgba(245, 158, 11, 0.3);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .section-header h2 {
        font-size: 2.5rem;
    }
    
    .cta-content h2 {
        font-size: 2.5rem;
    }
    
    .stats-dashboard {
        padding: 30px 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .additional-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-section .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-features {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .product-card {
        margin: 0 10px;
    }
    
    .stats-section .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}


/* Product Details Section */
.product-details {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.product-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.detail-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.detail-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f1f5f9;
}

.detail-header img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 15px;
    background: #f8fafc;
    padding: 10px;
}

.detail-title h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 5px;
}

.detail-subtitle {
    color: #64748b;
    font-size: 0.9rem;
    font-style: italic;
}

.detail-section {
    margin-bottom: 30px;
}

.detail-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail-section h4 i {
    color: #f59e0b;
    font-size: 1rem;
}

.detail-section ul, .detail-section ol {
    padding-left: 20px;
}

.detail-section li {
    margin-bottom: 8px;
    color: #475569;
    line-height: 1.6;
}

.detail-section li strong {
    color: #1e293b;
}

.product-specs {
    display: grid;
    gap: 12px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 4px solid #f59e0b;
}

.spec-label {
    font-weight: 600;
    color: #1e293b;
}

.spec-value {
    color: #475569;
    font-weight: 500;
}

/* Purchase Section */
.purchase {
    padding: 100px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
}

.purchase .section-header h2,
.purchase .section-header p {
    color: white;
}

.special-offer {
    background: linear-gradient(135deg, #f59e0b, #eab308);
    border-radius: 20px;
    padding: 30px;
    margin: 40px 0 60px 0;
    text-align: center;
    box-shadow: 0 20px 40px rgba(245, 158, 11, 0.3);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 20px 40px rgba(245, 158, 11, 0.3); }
    50% { box-shadow: 0 25px 50px rgba(245, 158, 11, 0.5); }
}

.offer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.offer-icon {
    font-size: 3rem;
    color: white;
}

.offer-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: white;
}

.offer-text p {
    font-size: 1.1rem;
    color: white;
    margin: 0;
}

.purchase-channels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.channel-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.channel-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f59e0b, #eab308);
}

.channel-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    border-color: #f59e0b;
}

.channel-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
}

.channel-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.shopee .channel-icon {
    background: linear-gradient(135deg, #ee4d2d, #ff6b35);
}

.tiktok .channel-icon {
    background: linear-gradient(135deg, #000000, #ff0050);
}

.tiktok-channel .channel-icon {
    background: linear-gradient(135deg, #25d366, #128c7e);
}

.channel-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 5px;
}

.channel-badge {
    background: #f59e0b;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.channel-benefits {
    margin-bottom: 30px;
}

.channel-benefits ul {
    list-style: none;
    text-align: left;
}

.channel-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: #475569;
    font-size: 0.95rem;
}

.channel-benefits li i {
    color: #10b981;
    font-size: 0.9rem;
    width: 16px;
}

.channel-benefits li i.fa-gift {
    color: #f59e0b;
}

.btn-channel {
    background: linear-gradient(135deg, #f59e0b, #eab308);
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-channel:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(245, 158, 11, 0.4);
    background: linear-gradient(135deg, #eab308, #f59e0b);
}

/* Support Section */
.support {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.support-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-top: 4px solid #f59e0b;
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.support-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #f59e0b, #eab308);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: white;
}

.support-card h3 {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 25px;
}

.support-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 20px 0 10px 0;
}

.support-content ul {
    list-style: none;
    padding-left: 0;
}

.support-content li {
    margin-bottom: 8px;
    color: #475569;
    line-height: 1.6;
    padding-left: 20px;
    position: relative;
}

.support-content li::before {
    content: '•';
    color: #f59e0b;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.contact-info {
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding: 12px;
    background: #f8fafc;
    border-radius: 10px;
}

.contact-item i {
    color: #f59e0b;
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.contact-item strong {
    color: #1e293b;
    display: block;
    margin-bottom: 2px;
}

.contact-item a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
}

.contact-item a:hover {
    text-decoration: underline;
}

.support-note {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
}

.support-note p {
    margin: 0;
    color: #1e40af;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.support-note i {
    color: #3b82f6;
}

/* Responsive Design for New Sections */
@media (max-width: 768px) {
    .product-details-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .detail-card {
        padding: 25px;
    }
    
    .detail-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .purchase-channels {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .channel-card {
        padding: 25px;
    }
    
    .offer-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .offer-icon {
        font-size: 2.5rem;
    }
    
    .support-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .support-card {
        padding: 25px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .detail-card,
    .channel-card,
    .support-card {
        padding: 20px;
    }
    
    .special-offer {
        padding: 20px;
        margin: 30px 0 40px 0;
    }
    
    .offer-text h3 {
        font-size: 1.2rem;
    }
    
    .offer-text p {
        font-size: 1rem;
    }
}


/* Mobile-First Optimization */
@media (max-width: 480px) {
    /* Reduce font sizes for better mobile performance */
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    /* Optimize button sizes for touch */
    .btn {
        min-height: 44px;
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    /* Reduce animation complexity on mobile */
    .hero-particles {
        display: none;
    }
    
    /* Optimize images for mobile */
    .product-image img {
        width: 100%;
        height: auto;
        object-fit: contain;
    }
}

/* Performance optimizations for all devices */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-particles {
        display: none;
    }
}

/* Critical CSS for above-the-fold content */
.hero {
    contain: layout style paint;
}

.navbar {
    contain: layout style;
}

/* Optimize font rendering */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeSpeed;
}

/* Reduce layout shifts */
.product-card,
.tech-card,
.support-card {
    aspect-ratio: auto;
    min-height: 300px;
}

/* Optimize scrolling performance */
.container {
    contain: layout;
}

/* Preload critical images */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/product_white_bg.png');
    background-size: 0;
    opacity: 0;
    pointer-events: none;
}

/* Company Information Styling */
.footer-bottom .company-info,
.footer-bottom .company-address,
.footer-bottom .distributor-info {
    font-size: 0.8rem;
    color: #888;
    margin: 5px 0;
    text-align: center;
}

.footer-bottom .company-info strong,
.footer-bottom .distributor-info strong {
    color: #f59e0b;
}

.footer-bottom .distributor-info a {
    color: #f59e0b;
    text-decoration: none;
}

.footer-bottom .distributor-info a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .footer-bottom .company-info,
    .footer-bottom .company-address,
    .footer-bottom .distributor-info {
        font-size: 0.7rem;
        margin: 3px 0;
    }
}