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

html {
    scroll-behavior: smooth;
}

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

/* Container and Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

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

.nav-logo h2 {
    color: #2563eb;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Layout Controls */
.layout-controls {
    display: flex;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.05);
    padding: 0.5rem;
    border-radius: 12px;
}

.layout-btn {
    background: transparent;
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #6b7280;
    display: flex;
    align-items: center;
    justify-content: center;
}

.layout-btn:hover {
    background: rgba(37, 99, 235, 0.1);
    color: #2563eb;
}

.layout-btn.active {
    background: #2563eb;
    color: white;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.layout-btn i {
    font-size: 1rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 80vh;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, #fff, #e2e8f0);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    justify-content: flex-start;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    font-weight: 500;
}

/* Hero Apps Showcase */
.hero-apps-showcase {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
}

.app-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transform: translateY(0);
    transition: all 0.3s ease;
    animation: float 6s ease-in-out infinite;
}

.app-preview:nth-child(2) {
    animation-delay: -3s;
}

.app-preview:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
}

.app-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: linear-gradient(45deg, #ffffff20, #ffffff40);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.app-icon i {
    font-size: 2.5rem;
    color: white;
}

.app-preview h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
}

.app-preview p {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.app-features {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.app-features span {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #2563eb, #3b82f6);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
}

.btn-download {
    background: #1f2937;
    color: white;
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    margin-right: 1rem;
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-download:hover {
    background: #374151;
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
}

/* Products Section */
.products-section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

/* Products Grid - Card Layout Only */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
    padding: 2rem 0;
}

/* CARD LAYOUT (Now the only layout) */

.product-card {
    background: white;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.card-image {
    height: 300px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
}

.card-image img {
    width: auto;
    height: 100%;
    max-width: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

/* Easy Translate cards use horizontal images */
.product-card[data-product="easy-translate"] .card-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* QR Scanner cards use vertical images */
.product-card[data-product="qr-scanner"] .card-image img {
    width: auto;
    height: 100%;
    object-fit: contain;
}

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

.card-content {
    padding: 2.5rem;
}

.card-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.card-tagline {
    color: #6b7280;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.feature-tag {
    background: #f3f4f6;
    color: #374151;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.card-description {
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.card-gallery {
    margin-bottom: 2rem;
}

.mini-screenshots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1rem 0;
}

.mini-screenshots img {
    width: 100%;
    height: 80px;
    object-fit: contain;
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    background: #f8fafc;
    padding: 3px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.mini-screenshots img:hover {
    transform: scale(1.05);
    border-color: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Easy Translate mini screenshots (横图) */
.product-card[data-product="easy-translate"] .mini-screenshots img {
    object-fit: cover;
    padding: 0;
}

/* QR Scanner mini screenshots (竖图) */
.product-card[data-product="qr-scanner"] .mini-screenshots img {
    object-fit: contain;
    padding: 2px;
}



.card-actions {
    display: flex;
    gap: 1rem;
}





/* Contact Section */
.contact-section {
    padding: 6rem 0;
    background: #1f2937;
    color: white;
    text-align: center;
}

.contact-content h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.contact-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: #111827;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #f9fafb;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

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

.footer-section a:hover {
    color: #3b82f6;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.contact-info i {
    color: #3b82f6;
    font-size: 1rem;
    width: 20px;
}

.contact-info a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-info a:hover {
    color: #3b82f6;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Animation and Effects */
@media (prefers-reduced-motion: no-preference) {
    .feature-card,
    .product-card,
    .product-list-item,
    .compare-product {
        animation: fadeInUp 0.6s ease forwards;
        opacity: 0;
        transform: translateY(30px);
    }
    
    .feature-card:nth-child(1),
    .product-card:nth-child(1),
    .product-list-item:nth-child(1) { animation-delay: 0.1s; }
    .feature-card:nth-child(2),
    .product-card:nth-child(2),
    .product-list-item:nth-child(2) { animation-delay: 0.2s; }
    .feature-card:nth-child(3) { animation-delay: 0.3s; }
    .feature-card:nth-child(4) { animation-delay: 0.4s; }
    
    @keyframes fadeInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* Responsive Design */
@media (max-width: 1024px) {

}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    

    
    .section-title {
        font-size: 2.5rem;
    }
    

    
    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .hero-apps-showcase {
        gap: 1.5rem;
    }
    
    .app-preview {
        padding: 1.5rem;
    }
    
    .app-icon {
        width: 60px;
        height: 60px;
    }
    
    .app-icon i {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    

}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .product-title {
        font-size: 2rem;
    }
    
    .features-title {
        font-size: 1.75rem;
    }
    
    .screenshot-gallery {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
    }
    
    .cta-section h4 {
        font-size: 2rem;
    }
    
    .contact-content h2 {
        font-size: 2.5rem;
    }
    
    .layout-btn {
        padding: 0.5rem;
    }
    
    .card-content {
        padding: 1.5rem;
    }
    
    .mini-screenshots {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .mini-screenshots img {
        height: 70px;
    }
}

/* Accessibility improvements */
.btn:focus,
.nav-link:focus,
.layout-btn:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Loading states */
img {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img.loaded {
    opacity: 1;
}