body {
    font-family: Arial, sans-serif;
    background-color: #ffffff;
    color: #000000;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1, h2 {
    color: #ff4500;
    text-align: center;
}

.verb-list, .drill-list {
    list-style-type: none;
    padding: 0;
}

.verb-item, .question {
    background-color: #f0f0f0;
    border-radius: 5px;
    margin-bottom: 10px;
    padding: 15px;
}

.verb-word {
    font-weight: bold;
    font-size: 1.2em;
    color: #ff4500;
}

.verb-meaning, .verb-memory-tip {
    margin-top: 5px;
}

.verb-memory-tip {
    font-style: italic;
}

.pronunciation-btn, .download-pdf-btn, button[type="submit"] {
    background-color: #ff4500;
    color: #ffffff;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    margin-top: 5px;
}

.download-pdf-btn {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    font-size: 1em;
}

.leaderboard {
    margin-top: 30px;
}

.leaderboard-list {
    list-style-type: none;
    padding: 0;
}

.leaderboard-item {
    background-color: #f0f0f0;
    border-radius: 5px;
    margin-bottom: 5px;
    padding: 10px;
}

.add-score-form {
    margin-top: 20px;
}

.add-score-form input,
.add-score-form button {
    margin-top: 10px;
}

.drill-list {
    margin-bottom: 20px;
}

.drill-list li {
    margin-bottom: 10px;
}

.drill-list a {
    display: block;
    background-color: #ff4500;
    color: #ffffff;
    text-decoration: none;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
}

.back-btn {
    display: block;
    background-color: #ff4500;
    color: #ffffff;
    text-decoration: none;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    margin-top: 20px;
}

#flashcard {
    background-color: #f0f0f0;
    border-radius: 5px;
    padding: 20px;
    margin-bottom: 20px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
}

#flip, #next {
    display: inline-block;
    margin-right: 10px;
}

.correct {
    color: green;
}

.incorrect {
    color: red;
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }
}