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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

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

a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #1d4ed8;
}

/* Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.nav a {
    color: #475569;
    font-weight: 500;
}

.nav a:hover {
    color: #2563eb;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 3rem 1rem;
}

.hero-image {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    margin: 2rem 0;
}

.product-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: white;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

/* Price Badge */
.price-badge {
    background: #ef4444;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 1.1rem;
    display: inline-block;
    margin-bottom: 1rem;
}

.original-price {
    color: #94a3b8;
    text-decoration: line-through;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.shipping-note {
    color: #cbd5e1;
    margin-bottom: 2rem;
}

/* Buttons */
.buy-button,
.buy-button-large,
.cta-button {
    background: #2563eb;
    color: white;
    padding: 1rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-align: center;
}

.buy-button:hover,
.buy-button-large:hover,
.cta-button:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.buy-button-large {
    font-size: 1.2rem;
    padding: 1.25rem 2.5rem;
}

.cta-button {
    background: #ffffff;
    color: #2563eb;
    border: 2px solid #ffffff;
}

.cta-button:hover {
    background: #f8fafc;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

section {
    margin-bottom: 3rem;
}

h1, h2, h3 {
    color: #1e293b;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Features Section */
.features {
    background: #f8fafc;
    border-radius: 12px;
    padding: 2.5rem;
    margin: 3rem 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.product-includes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.feature-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: #64748b;
    font-size: 0.875rem;
}

/* Benefits Section */
.benefits {
    padding: 2rem 0;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.benefit-item h3 {
    color: #0f172a;
}

.benefit-item p {
    color: #64748b;
    font-size: 0.95rem;
}

/* Gallery Section */
.gallery-section {
    background: #f8fafc;
    border-radius: 12px;
    padding: 2.5rem;
}

.gallery-section h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.gallery-grid img {
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* Comparison Table */
.comparison {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comp-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
}

.comp-row.header {
    font-weight: 600;
    background: #f8fafc;
    border-bottom: 2px solid #e2e8f0;
}

.comp-row.header div {
    padding-top: 0.5rem;
}

/* FAQ Section */
.faq {
    background: #f8fafc;
    border-radius: 12px;
    padding: 2.5rem;
}

.faq-item {
    margin-bottom: 1.5rem;
}

.faq-item h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #0f172a;
}

.faq-item p {
    color: #64748b;
    font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
}

.cta-section h2 {
    margin-bottom: 1.5rem;
}

.secure-text {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 2rem 1rem;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.footer-links a {
    color: #94a3b8;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: #cbd5e1;
}

.legal {
    font-size: 0.8rem;
    color: #64748b;
}

/* Checkout Styles */
.checkout-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.checkout-header {
    text-align: center;
    margin-bottom: 2rem;
}

.checkout-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.product-summary, .secure-checkout {
    background: #f8fafc;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.summary-row:last-child {
    border-bottom: none;
}

.summary-row.total {
    font-weight: 600;
    font-size: 1.1rem;
}

.summary-row.total span {
    color: #0f172a;
}

.shipping {
    color: #059669;
}

.payment-methods {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.payment-methods img {
    height: 24px;
    filter: grayscale(100%);
}

.security-badges {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: #64748b;
}

.checkout-hero {
    background: #1e293b;
    color: white;
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .product-title {
        font-size: 1.75rem;
    }
    
    .checkout-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .features {
        padding: 1.5rem;
    }
    
    .comparison-table {
        font-size: 0.9rem;
    }
}