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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #fff;
    background-color: #000;
}

header {
    background-color: #000;
    box-shadow: 0 2px 4px rgba(255,255,255,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #fff;
    letter-spacing: -0.5px;
}

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

nav a {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.7;
}

main {
    margin-top: 4rem;
}

.hero {
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 8rem 1rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.screenshots {
    background-color: #000;
    text-align: center;
    padding: 6rem 1rem;
    position: relative;
    overflow: hidden;
}

.screenshot-grid {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
    perspective: 1000px;
}

.screenshot {
    flex: 0 1 300px;
    max-width: 300px;
    transition: all 0.5s ease;
    transform-style: preserve-3d;
}

.screenshot:hover {
    transform: translateY(-20px) rotateY(5deg);
}

.screenshot img {
    width: 100%;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 20px 40px rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    section {
        padding: 4rem 1rem;
    }
    
    .screenshot-grid {
        gap: 2rem;
    }
    
    .screenshot {
        flex: 0 1 250px;
    }
    
    .screenshot:hover {
        transform: translateY(-10px);
    }
}

.cta-button {
    background-color: #fff;
    color: #000;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    font-weight: 500;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255,255,255,0.1);
}

section {
    padding: 6rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features {
    background-color: #000;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(255,255,255,0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
}

.feature-card h3 {
    color: #fff;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.8);
}

.about, .download {
    text-align: center;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #fff;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.about p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 800px;
    margin: 0 auto;
}

.download {
    background-color: #000;
    color: #fff;
}

.download h2 {
    color: #fff;
}

.download p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.download .cta-button {
    background-color: #fff;
    color: #000;
}

footer {
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links {
    margin-top: 1rem;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    margin: 0 1rem;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}