/* Dark theme styling */
body {
    background-color: #1e1e1e;
    color: #ffffff;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    width: 80%;
    max-width: 500px;
}

h1 {
    color: #00adb5;
}

input[type="number"] {
    width: 80%;
    padding: 10px;
    font-size: 1em;
    margin: 10px 0;
    border: none;
    border-radius: 5px;
    outline: none;
}

button {
    background-color: #00adb5;
    color: #ffffff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    cursor: pointer;
}

button:hover {
    background-color: #007b83;
}

#progressBarOutput {
    font-family: monospace;
    font-size: 1.2em;
    margin-top: 20px;
}

#errorMessage {
    color: #ff5722;
    margin-top: 10px;
}