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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #1d1d1f;
    background-color: #ffffff;
    overflow-x: hidden;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1d1d1f;
}

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

.nav-links a {
    text-decoration: none;
    color: #1d1d1f;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: #0071e3;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    background-color: #fbfbfb;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUpIn 1s ease forwards;
}

.tagline {
    font-size: 2rem;
    color: #86868b;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUpIn 1s ease forwards 0.3s;
}

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

.products {
    padding: 8rem 2rem;
    background-color: #ffffff;
    max-width: 1400px;
    margin: 0 auto;
}

.product-section {
    display: flex;
    align-items: center;
    gap: 4rem;
    margin-bottom: 8rem;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.product-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-section:nth-child(even) {
    flex-direction: row-reverse;
}

.product-image {
    flex: 1;
    position: relative;
    min-width: 0;
    background-color: #f5f5f7;
    padding: 2rem;
    border-radius: 20px;
}

.product-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    transition: transform 0.3s ease;
    max-width: 600px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    background-color: transparent;
    mix-blend-mode: multiply;
}

.product-image:hover img {
    transform: scale(1.02);
}

.product-content {
    flex: 1;
    padding: 2rem;
    min-width: 0;
}

.product-content h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.product-content h3 {
    font-size: 1.5rem;
    color: #86868b;
    margin-bottom: 2rem;
    font-weight: 500;
}

.product-content p {
    font-size: 1.1rem;
    color: #1d1d1f;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.product-actions {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
}

.buy-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 2rem;
    background-color: #0071e3;
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.buy-button:hover {
    background-color: #0077ed;
    transform: translateY(-2px);
}

.learn-more {
    display: inline-flex;
    align-items: center;
    color: #0071e3;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.learn-more:hover {
    color: #0077ed;
    transform: translateX(5px);
}

.learn-more::after {
    content: '>';
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.learn-more:hover::after {
    transform: translateX(3px);
}

.about {
    padding: 8rem 2rem;
    background-color: #fbfbfb;
    text-align: center;
}

.about-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 4rem;
}

.about-tab {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: #86868b;
    cursor: pointer;
    padding: 0.5rem 1rem;
    position: relative;
    transition: color 0.3s ease;
}

.about-tab::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #0071e3;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.about-tab.active {
    color: #1d1d1f;
}

.about-tab.active::after {
    transform: scaleX(1);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.about-content.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.about-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.about-content h3 {
    font-size: 1.8rem;
    color: #86868b;
    margin-bottom: 2rem;
    font-weight: 500;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: #1d1d1f;
}

.feature-list {
    text-align: left;
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    margin: 3rem 0;
}

.feature-list h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: #1d1d1f;
}

.feature-list ul {
    list-style: none;
}

.feature-list li {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: #424245;
}

.feature-list li strong {
    color: #1d1d1f;
    display: block;
    margin-bottom: 0.3rem;
}

.tagline-secondary {
    font-size: 1.5rem;
    color: #86868b;
    font-weight: 500;
    margin-top: 3rem;
}

.contact {
    padding: 8rem 2rem;
    text-align: center;
    background-color: #ffffff;
}

.contact h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.contact p {
    color: #86868b;
    margin-bottom: 3rem;
    font-size: 1.2rem;
}

.contact-options {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.contact-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    width: 100%;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0071e3;
}

.file-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    border: 2px dashed #d2d2d7;
    border-radius: 12px;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.file-label:hover {
    border-color: #0071e3;
}

.file-label input {
    display: none;
}

.contact-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #0071e3;
    color: #ffffff;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: scale(1);
}

.contact-button:hover {
    background-color: #0077ed;
    transform: scale(1.05);
}

footer {
    background-color: #f5f5f7;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

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

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

.footer-section a {
    color: #86868b;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: #1d1d1f;
}

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid #d2d2d7;
    text-align: center;
    color: #86868b;
}

@media (max-width: 1024px) {
    .product-section {
        flex-direction: column !important;
        text-align: center;
        gap: 2rem;
        margin-bottom: 6rem;
    }

    .product-content {
        padding: 1rem;
    }

    .product-image img {
        max-width: 100%;
    }

    .about-content {
        padding: 0 1rem;
    }

    .feature-list {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 4rem;
    }
    
    .tagline {
        font-size: 1.5rem;
    }

    .product-content h2 {
        font-size: 2.5rem;
    }

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

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

    .about-nav {
        flex-direction: column;
        gap: 1rem;
    }

    .about-content h2 {
        font-size: 2.5rem;
    }

    .about-content h3 {
        font-size: 1.5rem;
    }

    .product-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .buy-button,
    .learn-more {
        width: 100%;
        text-align: center;
    }
}