/* Reset some default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

#app {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    padding: 20px;
    text-align: center;
}

h1 {
    font-size: 2em;
    margin-bottom: 20px;
    color: #4a90e2;
}

#announcement {
    font-size: 1.2em;
    margin-top: 20px;
}

button {
    background: #4a90e2;
    border: none;
    border-radius: 25px;
    color: white;
    font-size: 1em;
    padding: 10px 20px;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: #357abd;
}

/* Responsive design */
@media (max-width: 480px) {
    #app {
        width: 90%;
    }

    h1 {
        font-size: 1.5em;
    }

    button {
        width: 100%;
        padding: 15px 0;
    }
}