body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 40px 20px;
    background-color: #111;
    color: white;
}

.stats {
    color: #888;
    font-size: 0.95rem;
    margin-bottom: 10px;
}

h1 {
    font-size: 4rem;
    margin: 0.2em 0;
}

h2 {
    font-size: 2.2rem;
    margin: 0.2em 0;
    color: #ccc;
}

h3 {
    font-size: 1.6rem;
    color: gray;
    margin: 0.2em 0;
}

audio {
    display: block;
    margin: 20px auto;
}

.btn-secondary {
    padding: 12px 20px;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    background-color: #374151;
    color: white;
    cursor: pointer;
    margin-bottom: 30px;
}

.btn-secondary:hover {
    background-color: #4b5563;
}

.rating-buttons {
    margin-top: 20px;
}

.rating-label {
    color: #999;
    margin-bottom: 12px;
    font-size: 1rem;
}

.btn-rating {
    padding: 14px 22px;
    font-size: 1.1rem;
    margin: 6px;
    border: none;
    border-radius: 8px;
    color: white;
    cursor: pointer;
    min-width: 110px;
}

.btn-again { background-color: #dc2626; }
.btn-again:hover { background-color: #b91c1c; }

.btn-hard { background-color: #d97706; }
.btn-hard:hover { background-color: #b45309; }

.btn-good { background-color: #2563eb; }
.btn-good:hover { background-color: #1d4ed8; }

.btn-easy { background-color: #16a34a; }
.btn-easy:hover { background-color: #15803d; }

footer {
    margin-top: 50px;
    color: #666;
}