questions.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #4a6fa5;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.nav-bar {
    background: white;
    padding: 1rem 2rem;
    margin-bottom: 2rem;
    border-radius: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    width: 40px;
    height: 40px;
    background: #4a6fa5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    font-weight: bold;
}

.site-info h1 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.site-info p {
    font-size: 0.85rem;
    color: #666;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.welcome-message {
    font-size: 1rem;
    color: #333;
    font-weight: 500;
}

.logout-container {
    display: flex;
    align-items: center;
}

.logout-btn {
    background: #4a6fa5;
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.logout-btn:hover {
    background: #3d5a8a;
}

/* Main Quiz Container */
.quiz-container {
    background: white;
    border-radius: 8px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

/* Section Selection */
#sectionSelect {
    text-align: center;
}

#sectionSelect h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.5rem;
}

#sectionSelect p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2.5rem;
}

/* Progress Overview */
.progress-overview {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid #e9ecef;
}

.progress-overview h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 600;
}

.overall-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    transition: transform 0.2s ease;
}

.stat-item:hover {
    transform: translateY(-2px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #4a6fa5;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.85rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Section Dropdown */
#sectionSelect select {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    background: white;
    color: #333;
    transition: all 0.3s ease;
    cursor: pointer;
    margin: 1.5rem 0;
}

#sectionSelect select:focus {
    outline: none;
    border-color: #4a6fa5;
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.1);
}

/* Section Progress */
.section-progress {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 6px;
    margin: 1.5rem 0;
    border: 1px solid #e9ecef;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: 600;
    color: #333;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #4a6fa5;
    transition: width 0.5s ease;
    border-radius: 4px;
}

/* Buttons */
.button-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.start-btn, .continue-btn, .restart-btn, .review-btn, .menu-btn, .next-btn, .back-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.start-btn, .continue-btn:hover, .restart-btn:hover, .review-btn:hover {
    background: #4a6fa5;
    color: white;
    border: 2px solid #4a6fa5;
}

.start-btn:hover {
    background: #3d5a8a;
    border-color: #3d5a8a;
}

.continue-btn, .restart-btn, .review-btn {
    background: white;
    color: #4a6fa5;
    border: 2px solid #4a6fa5;
}

.menu-btn, .back-btn {
    background: #6c757d;
    color: white;
    border: 2px solid #6c757d;
}

.menu-btn:hover, .back-btn:hover {
    background: #5a6268;
    border-color: #5a6268;
}

.next-btn {
    background: #4a6fa5;
    color: white;
    border: 2px solid #4a6fa5;
}

.next-btn:hover {
    background: #3d5a8a;
    border-color: #3d5a8a;
}

.start-btn:hover, .continue-btn:hover, .restart-btn:hover, .review-btn:hover, .menu-btn:hover, .next-btn:hover, .back-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Quiz Interface */
.section-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: #333;
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
    display: none;
}

.question {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border-left: 4px solid #4a6fa5;
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    line-height: 1.5;
    display: none;
}

.progress {
    text-align: center;
    font-size: 1rem;
    color: #666;
    margin-bottom: 1.5rem;
    font-weight: 500;
    display: none;
}

/* Options */
.options {
    display: none;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.option {
    padding: 1rem 1.5rem;
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    text-align: left;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1.4;
}

.option:hover:not(.correct):not(.incorrect) {
    border-color: #4a6fa5;
    background: #f8f9fa;
}

.option.correct {
    background: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.option.incorrect {
    background: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

/* Feedback */
.feedback {
    background: white;
    padding: 1.5rem;
    border-radius: 6px;
    margin: 1.5rem 0;
    border-left: 4px solid #4a6fa5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
    display: none;
}

.feedback.correct {
    border-left-color: #28a745;
    background: #d4edda;
    color: #155724;
}

.feedback.incorrect {
    border-left-color: #dc3545;
    background: #f8d7da;
    color: #721c24;
}

/* Navigation */
.button-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e9ecef;
}

/* Results */
.results {
    display: none;
    text-align: center;
}

.results-content {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.results h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.results-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

/* Status Indicators */
.completed-section {
    color: #28a745;
    font-weight: 700;
}

.in-progress-section {
    color: #fd7e14;
    font-weight: 700;
}

/* Performance Indicators */
.performance-indicator {
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    margin: 1.5rem 0;
    font-size: 1rem;
}

.performance-indicator.good {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.performance-indicator.needs-improvement {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* Error Messages */
.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 15px;
    text-align: center;
    border: 1px solid #f5c6cb;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .nav-bar {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        padding: 1rem;
    }

    .quiz-container {
        padding: 1.5rem;
    }

    #sectionSelect h2 {
        font-size: 2rem;
    }

    .overall-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .button-group, .results-buttons {
        flex-direction: column;
        align-items: center;
    }

    .start-btn, .continue-btn, .restart-btn, .review-btn, .menu-btn, .next-btn, .back-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .button-container {
        flex-direction: column;
        gap: 1rem;
    }

    .question {
        padding: 1.5rem;
        font-size: 1.1rem;
    }

    .option {
        padding: 0.8rem 1rem;
        font-size: 0.95rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4a6fa5;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}