* {
    box-sizing: border-box;
}

body {
    margin: 0;
    height: 100vh;
    background-color: rgb(16, 2, 40);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, sans-serif;
    color: #ffffff;
}

.container {
    text-align: center;
    width: 80%;
    max-width: 1000px;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.2em;
}

.tagline {
    font-size: 1.2rem;
    color: #b9a9ff;
    margin-bottom: 1em;
}

.description {
    font-size: 1rem;
    max-width: 700px;
    margin: 0 auto 2em;
    line-height: 1.6;
    color: #e0e0e0;
}

.chat-container {
    width: 100%;
    height: 500px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.6);
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Tablet screens (max width: 1024px) */
@media (max-width: 1024px) {
    .container {
        width: 90%;
    }

    h1 {
        font-size: 2.5rem;
    }

    .chat-container {
        height: 450px;
    }
}

/* Mobile screens (max width: 768px) */
@media (max-width: 768px) {
    body {
        padding: 20px;
        align-items: flex-start;
    }

    .container {
        width: 100%;
        margin-top: 20px;
    }

    h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .description {
        font-size: 0.95rem;
        margin-bottom: 1.5em;
    }

    .chat-container {
        height: 420px;
        border-radius: 10px;
    }
}

/* Small mobile screens (max width: 480px) */
@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }

    .chat-container {
        height: 380px;
    }
}