body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

#background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.container {
    text-align: center;
    padding: 40px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

header h1 {
    margin: 0;
    font-size: 3em;
}

header p {
    margin: 20px 0;
    font-size: 1.5em;
}

.app-image img {
    width: 250px;
    height: auto;
    border-radius: 20px;
    margin: 30px 0;
    transition: transform 0.3s;
}

.app-image img:hover {
    transform: scale(1.1);
}

#download-button {
    background: #61dafb;
    color: #282c34;
    border: none;
    padding: 15px 40px;
    font-size: 1.5em;
    border-radius: 50px;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

#download-button:hover {
    background: #21a1f1;
    transform: scale(1.05);
}