/* Exam Page Styles */

.exam-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Exam Start Screen */
.exam-start-screen {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
}

.exam-start-screen h1 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
}

.exam-info {
    text-align: left;
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
    border: 1px solid var(--border-color);
}

.exam-info ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.exam-info li {
    margin: var(--spacing-xs) 0;
    line-height: 1.6;
}

.exam-warning {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: #fff3cd;
    border-left: 4px solid var(--warning-color);
    border-radius: 4px;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    margin-top: var(--spacing-lg);
}

/* Exam Interface */
.exam-interface {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.exam-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.exam-header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.exam-title h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.exam-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.exam-timer {
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--accent-color);
    font-size: 1.1rem;
}

.exam-progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.exam-progress-fill {
    height: 100%;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
    width: 0%;
}

.exam-question-container {
    margin: var(--spacing-lg) 0;
}

.exam-question {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--accent-color);
}

.exam-question h2 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.exam-answer-section {
    margin: var(--spacing-lg) 0;
}

.exam-answer-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.exam-answer-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.exam-answer-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.exam-answer-input:disabled {
    background-color: var(--bg-tertiary);
    cursor: not-allowed;
}

/* Multiple Choice Options */
.exam-multiple-choice {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.exam-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--bg-primary);
}

.exam-option:hover {
    background-color: var(--bg-secondary);
    border-color: var(--accent-color);
}

.exam-option input[type="radio"] {
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

.exam-option input[type="radio"]:disabled {
    cursor: not-allowed;
}

.exam-option:has(input[type="radio"]:disabled) {
    cursor: not-allowed;
    opacity: 0.7;
}

.exam-option:has(input[type="radio"]:checked) {
    background-color: var(--bg-secondary);
    border-color: var(--accent-color);
    font-weight: 600;
}

/* Speech Mode Toggle */
.speech-mode-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    user-select: none;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text-primary);
}

.speech-mode-toggle input[type="checkbox"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.speech-mode-toggle:hover {
    color: var(--accent-color);
}

.exam-feedback {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    border-radius: 4px;
    animation: slideIn 0.3s ease;
}

.exam-feedback.correct {
    background-color: #d4edda;
    border-left: 4px solid var(--success-color);
    color: #155724;
}

.exam-feedback.incorrect {
    background-color: #f8d7da;
    border-left: 4px solid var(--error-color);
    color: #721c24;
}

.exam-feedback p {
    margin: var(--spacing-xs) 0;
}

.exam-feedback .correct-answer {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.exam-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.exam-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.question-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.question-nav-buttons {
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.question-nav-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.question-nav-btn:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--accent-color);
}

.question-nav-btn.answered {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.question-nav-btn.correct {
    background-color: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

.question-nav-btn.incorrect {
    background-color: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.question-nav-btn.current {
    border: 2px solid var(--primary-color);
    font-weight: bold;
}

.question-nav-btn.skipped {
    background-color: var(--warning-color);
    color: white;
    border-color: var(--warning-color);
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
    border: none;
}

.btn-warning:hover {
    background-color: #e67e22;
}

/* Exam Results */
.exam-results {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--bg-secondary);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
}

.exam-results h1 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.grade-display {
    margin: var(--spacing-xl) 0;
}

.grade-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.grade-circle span {
    font-size: 3rem;
    font-weight: bold;
    color: white;
}

.grade-letter {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: var(--spacing-sm) 0;
}

.results-summary {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
    text-align: left;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.results-summary p {
    margin: var(--spacing-sm) 0;
    font-size: 1.1rem;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
}

.results-summary p:last-child {
    border-bottom: none;
}

.results-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

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

/* Certificate of Completion */
.certificate-container {
    max-width: 1000px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg);
}

.certificate-print-controls {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: 8px;
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.certificate {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 8px solid #2c3e50;
    border-radius: 12px;
    padding: 60px 80px;
    margin: var(--spacing-lg) auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    position: relative;
    max-width: 900px;
}

.certificate-border {
    border: 3px solid #3498db;
    padding: 40px;
    position: relative;
    background: white;
}

.certificate-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.certificate-seal {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    background: white;
    border: 3px solid #2c3e50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.certificate-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    letter-spacing: 4px;
    margin: var(--spacing-md) 0;
    text-transform: uppercase;
    font-family: 'Times New Roman', serif;
}

.certificate-subtitle {
    font-size: 1.3rem;
    color: #34495e;
    font-weight: 600;
    margin: var(--spacing-xs) 0;
    font-style: italic;
}

.certificate-subtitle-secondary {
    font-size: 1rem;
    color: #7f8c8d;
    margin-top: var(--spacing-xs);
}

.certificate-body {
    text-align: center;
    margin: var(--spacing-xl) 0;
    line-height: 2;
}

.certificate-text {
    font-size: 1.1rem;
    color: #34495e;
    margin: var(--spacing-md) 0;
    font-family: 'Georgia', serif;
}

.certificate-name {
    font-size: 2rem;
    font-weight: 700;
    color: #2c3e50;
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) 0;
    border-bottom: 2px solid #3498db;
    border-top: 2px solid #3498db;
    display: inline-block;
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
    font-family: 'Georgia', serif;
}

.certificate-course {
    font-size: 1.2rem;
    color: #2c3e50;
    font-weight: 600;
    margin: var(--spacing-lg) 0;
    line-height: 1.6;
    font-style: italic;
}

.certificate-grade {
    margin: var(--spacing-lg) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.certificate-grade-letter {
    font-size: 3rem;
    font-weight: 700;
    color: #2c3e50;
    font-family: 'Times New Roman', serif;
}

.certificate-grade-percentage {
    font-size: 1.5rem;
    color: #7f8c8d;
    font-weight: 600;
}

.certificate-date {
    font-size: 1rem;
    color: #34495e;
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
    font-weight: 600;
}

.certificate-id {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-family: 'Courier New', monospace;
    margin: var(--spacing-sm) 0;
    letter-spacing: 1px;
}

.certificate-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid #e9ecef;
}

.certificate-signature {
    text-align: right;
    margin-top: var(--spacing-xl);
}

.signature-line {
    width: 300px;
    height: 2px;
    background-color: #2c3e50;
    margin: 60px 0 10px auto;
}

.signature-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin: var(--spacing-xs) 0;
    text-align: right;
}

.signature-title {
    font-size: 0.95rem;
    color: #7f8c8d;
    font-style: italic;
    text-align: right;
}

.certificate-instructions {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: #fff3cd;
    border-left: 4px solid var(--warning-color);
    border-radius: 4px;
    font-size: 0.95rem;
}

/* Print Styles for Certificate */
@media print {
    body * {
        visibility: hidden;
    }
    
    .certificate-container,
    .certificate-container * {
        visibility: visible;
    }
    
    .certificate-container {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        margin: 0;
        padding: 0;
    }
    
    .certificate-print-controls,
    .certificate-instructions {
        display: none;
    }
    
    .certificate {
        border: 6px solid #2c3e50;
        box-shadow: none;
        page-break-inside: avoid;
        margin: 0;
        padding: 20px 40px;
        max-width: 100%;
    }
    
    .certificate-border {
        border: 2px solid #3498db;
        padding: 20px;
    }
    
    .certificate-header {
        margin-bottom: 15px;
    }
    
    .certificate-title {
        font-size: 1.8rem;
        letter-spacing: 2px;
        margin: 8px 0;
    }
    
    .certificate-subtitle {
        font-size: 1rem;
        margin: 4px 0;
    }
    
    .certificate-subtitle-secondary {
        font-size: 0.85rem;
        margin-top: 2px;
    }
    
    .certificate-body {
        margin: 15px 0;
        line-height: 1.6;
    }
    
    .certificate-text {
        font-size: 0.95rem;
        margin: 8px 0;
    }
    
    .certificate-name {
        font-size: 1.4rem;
        margin: 12px 0;
        padding: 8px 20px;
    }
    
    .certificate-course {
        font-size: 1rem;
        margin: 12px 0;
    }
    
    .certificate-grade {
        margin: 12px 0;
    }
    
    .certificate-grade-letter {
        font-size: 2rem;
    }
    
    .certificate-grade-percentage {
        font-size: 1.2rem;
    }
    
    .certificate-date {
        font-size: 0.9rem;
        margin: 12px 0 4px 0;
    }
    
    .certificate-id {
        font-size: 0.8rem;
        margin: 4px 0;
    }
    
    .certificate-footer {
        margin-top: 15px;
        padding-top: 10px;
    }
    
    .certificate-signature {
        margin-top: 15px;
    }
    
    .signature-line {
        width: 250px;
        margin: 40px 0 8px auto;
    }
    
    .signature-label {
        font-size: 0.95rem;
        margin: 2px 0;
    }
    
    .signature-title {
        font-size: 0.85rem;
    }
    
    .certificate-seal {
        width: 60px;
        height: 60px;
        top: -10px;
        right: -10px;
    }
    
    @page {
        size: letter portrait;
        margin: 0.4in;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .exam-container {
        padding: var(--spacing-md);
    }
    
    .exam-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .exam-navigation {
        flex-direction: column;
        align-items: stretch;
    }
    
    .question-list {
        flex-direction: column;
        align-items: stretch;
    }
    
    .question-nav-buttons {
        justify-content: center;
    }
    
    .grade-circle {
        width: 120px;
        height: 120px;
    }
    
    .grade-circle span {
        font-size: 2.5rem;
    }
    
    .certificate {
        padding: 30px 20px;
    }
    
    .certificate-border {
        padding: 20px;
    }
    
    .certificate-title {
        font-size: 1.8rem;
    }
    
    .certificate-name {
        font-size: 1.5rem;
    }
}