body {
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #ffffff;
    padding: 20px;
    transition: background-color 0.3s, color 0.3s;
}

body.light-mode {
    background-color: #f8f9fa;
    color: #000000;
}

.question-card {
    background-color: #1e1e1e;
    color: #ffffff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    transition: background-color 0.3s, color 0.3s;
}

body.light-mode .question-card {
    background-color: #fff;
    color: #000000;
}

.feedback {
    margin-top: 10px;
}

#result-container {
    display: none;
}

#theme-toggle {
    background: none;
    border: none;
    outline: none;
    color: #ffcc00; /* Improve contrast */
}

#theme-toggle i {
    font-size: 24px; /* Increase icon size */
}

body.light-mode #theme-toggle {
    color: #1e90ff; /* Improve contrast for light mode */
}

.card {
    background-color: #1e1e1e;
    color: #ffffff;
    border: 1px solid #444;
    transition: background-color 0.3s, color 0.3s;
}

body.light-mode .card {
    background-color: #fff;
    color: #000000;
    border: 1px solid #ccc;
}

h1 {
    text-align: center;
}

.option-btn {
    display: block;
    width: 100%;
    text-align: left;
}

.option-btn:disabled {
    pointer-events: none;
}

.text-center .fa {
    margin-bottom: 10px;
}