body {
    margin: 0;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

#container {
    text-align: center;
}

#timezone-display {
    font-size: 3em;
    margin-bottom: 20px;
}

#back-to-bot {
    font-size: 1.2em;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

#back-to-bot:hover {
    background-color: var(--button-hover-bg-color);
}

/* Light Theme */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #f0f0f0;
        --text-color: #333;
        --button-bg-color: #333;
        --button-text-color: #f0f0f0;
        --button-hover-bg-color: #555;
    }
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #333;
        --text-color: #f0f0f0;
        --button-bg-color: #f0f0f0;
        --button-text-color: #333;
        --button-hover-bg-color: #ddd;
    }
}