:root {
    --primary: #0056b3;
    --secondary: #4CAF50;
    --accent: #FF9800;
    --dark: #333;
    --light: #f8f9fa;
    --white: #fff;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    --border: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent);
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary);
    color: var(--white);
    border-radius: var(--radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn:hover {
    background-color: #004494;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--accent);
}

.section-title p {
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 4px 6px var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--primary);
}

.by-vla {
    font-size: 16px;
    margin-left: 8px;
    padding-left: 8px;
    border-left: 2px solid var(--accent);
    color: var(--accent);
    font-weight: 500;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--dark);
    font-weight: 500;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 86, 179, 0.7), rgba(0, 0, 0, 0.7)), url('../images/banner-background.webp');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    margin-top: 80px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.animate {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.delay-1 {
    animation-delay: 0.3s;
}

.delay-2 {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--white);
}

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

.feature-card {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px var(--shadow);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(0, 86, 179, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 30px;
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--gray);
}

/* Products Section */
.products {
    padding: 100px 0;
    background-color: var(--light);
}

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

.product-card {
    background-color: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px var(--shadow);
}

.product-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

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

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

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--primary);
    color: var(--white);
    padding: 5px 10px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
}

.product-content {
    padding: 30px;
}

.product-content h3 {
    margin-bottom: 15px;
}

.product-content p {
    color: var(--gray);
    margin-bottom: 20px;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Comparison Section */
.comparison {
    padding: 100px 0;
    background-color: var(--white);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
    box-shadow: 0 5px 15px var(--shadow);
    border-radius: var(--radius);
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background-color: var(--primary);
    color: var(--white);
    font-weight: 500;
}

.comparison-table tr:nth-child(even) {
    background-color: var(--light);
}

.comparison-table tr:hover {
    background-color: var(--light-gray);
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
    background-color: var(--light);
}

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

.testimonial-card {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px var(--shadow);
}

.testimonial-content {
    margin-bottom: 20px;
    position: relative;
}

.testimonial-content::before {
    content: '\201C';
    font-size: 60px;
    color: var(--primary);
    opacity: 0.2;
    position: absolute;
    top: -20px;
    left: -10px;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-image {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 15px;
}

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

.author-info h4 {
    margin-bottom: 5px;
}

.author-info p {
    color: var(--gray);
    font-size: 14px;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary), #003b7a);
    color: var(--white);
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta p {
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .btn:hover {
    background-color: var(--accent);
    color: var(--white);
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--light);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.footer-widget h4 {
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-widget h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary);
}

.footer-widget p {
    color: var(--gray);
    margin-bottom: 15px;
}

.footer-widget ul li {
    margin-bottom: 10px;
}

.footer-widget ul li a {
    color: var(--gray);
    transition: var(--transition);
}

.footer-widget ul li a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray);
    font-size: 14px;
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: var(--transition);
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    color: var(--white);
}

/* Breadcrumbs */
.breadcrumbs {
    background-color: var(--light);
    padding: 15px 0;
    margin-top: 80px;
}

.breadcrumbs-list {
    display: flex;
    align-items: center;
}

.breadcrumbs-item {
    display: flex;
    align-items: center;
}

.breadcrumbs-item:not(:last-child)::after {
    content: '/';
    margin: 0 10px;
    color: var(--gray);
}

.breadcrumbs-link {
    color: var(--gray);
    font-size: 14px;
}

.breadcrumbs-link.active {
    color: var(--primary);
    font-weight: 500;
}

/* Product Detail */
.product-detail {
    padding: 50px 0 100px;
    background-color: var(--white);
}

.product-detail-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.product-detail-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
}

.product-detail-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-detail-title {
    margin-bottom: 20px;
}

.product-detail-title h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.product-detail-title p {
    color: var(--gray);
    font-size: 18px;
}

.product-detail-content p {
    margin-bottom: 20px;
}

.product-detail-features {
    margin-top: 30px;
}

.product-detail-feature {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.product-detail-feature-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(0, 86, 179, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.product-detail-feature-icon i {
    font-size: 20px;
    color: var(--primary);
}

.product-detail-feature-text h4 {
    margin-bottom: 5px;
}

.product-detail-feature-text p {
    color: var(--gray);
    margin-bottom: 0;
}

.product-detail-tabs {
    margin-top: 50px;
}

.tabs-nav {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
}

.tab-link {
    padding: 15px 30px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

.tab-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-content h3 {
    margin-bottom: 20px;
}

.specs-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 30px;
}

.specs-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
}

.specs-list {
    margin-top: 30px;
}

.specs-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.specs-icon {
    width: 30px;
    height: 30px;
    background-color: rgba(0, 86, 179, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.specs-icon i {
    font-size: 14px;
    color: var(--primary);
}

.specs-text h4 {
    margin-bottom: 5px;
}

.specs-text p {
    color: var(--gray);
    margin-bottom: 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.gallery-item {
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    height: 200px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-overlay i {
    color: var(--white);
    font-size: 24px;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* Contact */
.contact {
    padding: 50px 0 100px;
    background-color: var(--white);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    background-color: var(--light);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: 0 5px 15px var(--shadow);
}

.contact-info h3 {
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(0, 86, 179, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 18px;
    color: var(--primary);
}

.contact-text h4 {
    margin-bottom: 5px;
}

.contact-text p {
    color: var(--gray);
    margin-bottom: 0;
}

.contact-form {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: 0 5px 15px var(--shadow);
}

.contact-form h3 {
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.contact-form h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

textarea.form-control {
    resize: vertical;
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.lightbox-content {
    position: relative;
    max-width: 80%;
    max-height: 80%;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: var(--white);
    font-size: 30px;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 992px) {
    .product-detail-container,
    .specs-container,
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .product-detail-image,
    .specs-image {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 70px;
    }
    
    .mobile-menu {
        display: block;
    }
    
    nav ul {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 5px 15px var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }
    
    nav ul.active {
        transform: translateY(0);
    }
    
    nav ul li {
        margin: 10px 0;
    }
    
    .hero {
        margin-top: 70px;
        height: 80vh;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .section-title h2 {
        font-size: 30px;
    }
    
    .tabs-nav {
        flex-wrap: wrap;
    }
    
    .tab-link {
        padding: 10px 15px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .product-detail-title h2 {
        font-size: 28px;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}