:root {
    --primary-color: #4a6bff;
    --secondary-color: #ff6b6b;
    --dark-color: #2b2d42;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-color);
    color: var(--dark-color);
    overflow-x: hidden;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 1rem 5%;
    background-color: rgba(255, 255, 255, 0.98);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

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

.cart-icon {
    position: relative;
    cursor: pointer;
    font-size: 1.3rem;
    color: var(--dark-color);
    transition: var(--transition);
}

.cart-icon:hover {
    color: var(--primary-color);
}

.cart-count {
    position: absolute;
    top: -10px;
    right: -10px;
    background-color: var(--secondary-color);
    color: rgb(3, 3, 3);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: bold;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 5% 3rem;
    flex-wrap: wrap;
}

.hero-content {
    flex: 1 1 400px;
    padding-right: 2rem;
    margin-bottom: 2rem;
}

.title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    opacity: 1;
    transform: none;
    transition: var(--transition);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 2rem;
    opacity: 1;
    transform: none;
    transition: var(--transition);
}

.cta-button {
    background-color: var(--primary-color);
    color: rgb(0, 0, 0);
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    opacity: 1;
    transform: none;
}

.cta-button:hover {
    background-color: #3a5ae8;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(74, 107, 255, 0.3);
}

.product-3d-viewer {
    flex: 1 1 400px;
    height: 60vh;
    background-color: #f0f0f0;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.products-section {
    padding: 5rem 5%;
    background-color: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    opacity: 1;
    transform: none;
    transition: var(--transition);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--light-color);
    border-radius: 15px;
    overflow: hidden;
    padding: 1.5rem;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    opacity: 1;
    transform: none;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.product-preview {
    height: 250px;
    margin-bottom: 1.5rem;
    background-color: #f5f5f5;
    border-radius: 10px;
    overflow: hidden;
}

.product-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.add-to-cart {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--dark-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.add-to-cart:hover {
    background-color: var(--primary-color);
}

.features-section {
    padding: 5rem 5%;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
    background-color: #f9f9f9;
}

.feature {
    text-align: center;
    max-width: 300px;
    padding: 2rem;
    opacity: 1;
    transform: none;
    transition: var(--transition);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature p {
    color: var(--gray-color);
    line-height: 1.6;
}

.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 5% 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--light-color);
}

.footer-section p, .footer-section ul {
    color: #adb5bd;
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    color: #adb5bd;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #adb5bd;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        height: auto;
        padding-top: 5rem;
        padding-bottom: 3rem;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 2rem;
        text-align: center;
    }

    .product-3d-viewer {
        width: 100%;
        height: 400px;
    }

    .title {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }
}

/* Small Devices (up to 576px) - Phones */
@media (max-width: 576px) {
    .navbar {
        padding: 1rem 5%;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        padding: 6rem 5% 3rem;
    }

    .title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .cta-button {
        width: 100%;
        text-align: center;
    }

    .product-card {
        padding: 1rem;
    }

    .product-preview {
        height: 200px;
    }

    .features-section {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-section {
        width: 100%;
    }

    .cart-count {
        width: 18px;
        height: 18px;
        font-size: 0.65rem;
        top: -8px;
        right: -8px;
    }
}

/* Medium Devices (576px - 768px) - Large Phones, Small Tablets */
@media (min-width: 577px) and (max-width: 768px) {
    .navbar {
        padding: 1.2rem 5%;
    }

    .hero {
        flex-direction: column;
        padding: 6rem 5% 3rem;
    }

    .hero-content {
        text-align: center;
        padding: 0;
    }

    .product-3d-viewer {
        width: 100%;
        height: 350px;
    }

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

    .feature {
        padding: 1rem;
    }
}

/* Large Devices (769px - 992px) - Tablets, Smaller Laptops */
@media (min-width: 769px) and (max-width: 992px) {
    .navbar {
        padding: 1.2rem 5%;
    }

    .hero {
        flex-wrap: wrap;
        gap: 2rem;
    }

    .hero-content {
        flex: 1 1 100%;
        text-align: center;
        padding-right: 0;
    }

    .product-3d-viewer {
        flex: 1 1 100%;
        height: 450px;
    }

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

    .feature {
        max-width: 100%;
    }
}

/* Extra Large Devices (993px - 1200px) - Laptops, Desktops */
@media (min-width: 993px) and (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .product-3d-viewer {
        height: 500px;
    }
}

/* Ultra Wide Screens (1201px and above) */
@media (min-width: 1201px) {
    .hero {
        padding: 10rem 10% 5rem;
    }

    .title {
        font-size: 4rem;
    }

    .subtitle {
        font-size: 1.5rem;
    }

    .product-3d-viewer {
        height: 60vh;
    }

    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}