body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f4f4f4;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

.word-container {
    font-size: 24px;
    margin: 20px;
    background: #e3f2fd;
    padding: 10px;
    border-radius: 5px;
    display: inline-block;
}

.letters button {
    margin: 5px;
    padding: 10px;
    font-size: 18px;
    background: #00796b;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.letters button:disabled {
    background: #bdbdbd;
}

.message {
    font-size: 20px;
    font-weight: bold;
    margin-top: 20px;
    color: #d32f2f;
}

.attempts, .timer {
    font-size: 18px;
    font-weight: bold;
    color: #00796b;
}

.restart, .next-level, .start {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 18px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.restart {
    background: #d32f2f;
    color: white;
    display: none;
}

.next-level {
    background: #388e3c;
    color: white;
    display: none;
}

.start {
    background: #1976d2;
    color: white;
}