.nav-tab-wrapper {
    margin-bottom: 20px;
    border-bottom: 1px solid #ccc;
}

.nav-tab {
    display: inline-block;
    padding: 10px 20px;
    margin-right: 5px;
    background: #f1f1f1;
    text-decoration: none;
    color: #000;
    border: 1px solid #ccc;
    border-bottom: none;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
}

.nav-tab-active, .nav-tab:hover {
    background: #fff;
    color: #0073aa;
}

.tab-content {
    padding: 20px;
    border: 1px solid #ccc;
    border-top: none;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    display: none;
}

.tab-content#tab-general, .tab-content#tab-basic, .tab-content#tab-unit-basic {
    display: block;
}

.practice-test {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

.test-timer {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.2em;
    color: #333;
}

.question-container {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.question-container p {
    font-size: 1.1em;
    margin-bottom: 15px;
}

.question-container label {
    display: block;
    margin-bottom: 10px;
}

.question-container input[type="radio"] {
    margin-right: 10px;
}

.navigation-panel a {
    display: inline-block;
    width: 30px;
    height: 30px;
    line-height: 30px;
    margin: 0 5px;
    background: #ddd;
    color: #333;
    text-decoration: none;
    border-radius: 50%;
    text-align: center;
}

.navigation-panel a.answered {
    background: #0073aa;
    color: white;
}

.test-result {
    margin: 20px 0;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 5px;
}

.test-result h3 {
    margin: 10px 0;
}

.button {
    display: inline-block;
    margin: 10px 0;
    padding: 8px 16px;
    background: #0073aa;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    cursor: pointer;
}

.button.secondary {
    background: #ccc;
    color: #333;
}