body {
    font-family: sans-serif;
    background-color: #1a1a1a;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-image: linear-gradient(45deg, #333 25%, transparent 25%), linear-gradient(-45deg, #333 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #333 75%), linear-gradient(-45deg, transparent 75%, #333 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.container {
    background-color: #2b2b2b;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
    text-align: center;
    max-width: 500px;
    width: 90%;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    color: #ff6b6b;
    text-shadow: 0 0 10px #ff6b6b, 0 0 20px #ff6b6b;
}

p {
    font-size: 1.1em;
    color: #ccc;
    margin-bottom: 30px;
}

.input-container {
    display: flex;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    overflow: hidden;
}

#videoURL {
    flex-grow: 1;
    border: none;
    padding: 15px;
    font-size: 1em;
    background-color: #3d3d3d;
    color: #fff;
    outline: none;
}

#downloadBtn {
    border: none;
    background-color: #ff6b6b;
    color: #fff;
    padding: 15px 25px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 10px #ff6b6b;
}

#downloadBtn:hover {
    background-color: #ff4757;
    box-shadow: 0 0 20px #ff4757;
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 2em;
    }

    .input-container {
        flex-direction: column;
    }

    #videoURL,
    #downloadBtn {
        border-radius: 10px;
        margin-bottom: 10px;
    }
}