body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0f0f1a;
    color: #e0e0e0;
    overflow-x: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    align-items: center;
}

nav {
    padding: 20px;
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    text-align: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 4px;
    color: #4CAF50;
}

.hero {
    text-align: center;
    padding: 60px 20px;
    max-width: 1200px;
}

h1 {
    font-size: 4rem;
    margin: 0;
    background: linear-gradient(to bottom, #fff, #4CAF50);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 1.2rem;
    color: #aaa;
    margin: 20px 0;
}

#hero-preview {
    width: 100%;
    height: 400px;
    background: #000;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid #333;
}

#gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 40px;
    max-width: 1200px;
}

.gallery-img {
    width: 300px;
    height: 225px;
    border-radius: 8px;
    object-fit: cover;
    border: 2px solid #333;
}

#features {
    background: #161625;
    padding: 60px 20px;
    width: 100%;
    max-width: 1200px;
    margin: 40px 0;
    border-radius: 15px;
    border: 1px solid #222;
}

#features ul {
    list-style: none;
    padding: 0;
    columns: 2;
}

#features li {
    padding: 10px;
    border-bottom: 1px solid #222;
}

#controls {
    padding: 40px;
    max-width: 800px;
    text-align: center;
}

.control-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    text-align: left;
    margin-top: 20px;
}

.control-group ul {
    padding-left: 20px;
}

.cta {
    padding: 100px 0;
}

#play-now {
    display: inline-block;
    padding: 20px 60px;
    background: #4CAF50;
    color: #fff;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 50px;
    transition: transform 0.2s, background 0.2s;
}

#play-now:hover {
    transform: scale(1.05);
    background: #45a049;
}

@media (max-width: 768px) {
    .control-grid {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 2.5rem;
    }
    #features ul {
        columns: 1;
    }
    #hero-preview {
        height: 250px;
    }
}