/* Global Styles */
:root {
    --primary-color: #0066cc;
    --secondary-color: #004d99;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --border-color: #ddd;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    padding-top: 80px; /* Add padding for fixed header */
}

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

/* Header Styles */
.header {
    background-color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 80px; /* Fixed height for header */
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    padding: 10px 0;
}

.logo img {
    height: 60px;
    width: auto;
    display: block;
}

.nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav ul li {
    margin-left: 2rem;
}

.nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 1.1rem;
}

.nav ul li a:hover {
    color: var(--primary-color);
}

/* Product Banner */
.product-banner {
    background-color: var(--light-gray);
    padding: 50px 0;
    text-align: center;
    margin-bottom: 2rem;
}

.product-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.product-banner p {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

/* Product Content */
.product-content {
    padding: 50px 0;
}

.product-content .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.product-gallery {
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.main-image {
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background-color: white;
}

.main-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.thumbnail-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 10px;
}

.thumbnail-images img {
    width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.3s;
    object-fit: cover;
}

.thumbnail-images img:hover {
    border-color: var(--primary-color);
}

.product-info {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.product-info h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.product-info h3 {
    color: var(--secondary-color);
    margin: 2rem 0 1rem;
    font-size: 1.5rem;
}

.product-info p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.specs-list, .feature-list {
    list-style: none;
    margin-bottom: 2rem;
}

.specs-list li, .feature-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1.1rem;
}

.specs-list li:before, .feature-list li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.specs-list li strong {
    color: var(--secondary-color);
    margin-right: 0.5rem;
}

/* Call to Action */
.cta-section {
    background-color: var(--light-gray);
    padding: 50px 0;
    text-align: center;
    margin-top: 2rem;
}

.cta-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 1.2rem;
    font-weight: 500;
    transition: all 0.3s;
}

.cta-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

/* Footer */
.footer {
    background-color: #333;
    color: white;
    padding: 50px 0 20px;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.3rem;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
    font-size: 1.1rem;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-section p {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: all 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

.footer-bottom p {
    font-size: 1rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }

    .header {
        height: 60px;
    }

    .logo img {
        height: 40px;
    }

    .nav ul {
        display: none;
    }

    .product-content .container {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-banner h1 {
        font-size: 2rem;
    }

    .product-info h2 {
        font-size: 1.8rem;
    }

    .product-info h3 {
        font-size: 1.3rem;
    }

    .product-info p,
    .specs-list li,
    .feature-list li {
        font-size: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 20px;
    }

    .social-links {
        justify-content: center;
    }

    .cta-button {
        width: 100%;
        max-width: 300px;
    }
}

/* Additional Responsive Adjustments */
@media (max-width: 480px) {
    .product-banner h1 {
        font-size: 1.8rem;
    }

    .product-banner p {
        font-size: 1rem;
    }

    .thumbnail-images {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-section h3 {
        font-size: 1.2rem;
    }
}