/**
 * Employee Workshop Test MVP - Custom Styles
 * Separated CSS for easy theme testing and customization
 */

/* Global Styles */
:root {
    --primary-color: #0d6efd;
    --primary-dark: #0b5ed7;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    margin: 2rem 0;
}

.login-card .card {
    border: none;
    box-shadow: var(--box-shadow-lg);
    border-radius: 1rem;
}

.login-card .card-body {
    padding: 2.5rem 2rem;
}

.login-card h1 {
    color: var(--primary-color);
    font-weight: 600;
}

.login-card .text-muted {
    font-size: 0.9rem;
}

/* Form Styles */
.form-control {
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-control.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.invalid-feedback {
    font-size: 0.875rem;
}

/* Button Styles */
/* .btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: all 0.15s ease-in-out;
} */

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: none;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Alert Styles */
.alert {
    border-radius: var(--border-radius);
    border: none;
    font-size: 0.9rem;
}

.alert-success {
    background-color: rgba(25, 135, 84, 0.1);
    color: var(--success-color);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.alert-info {
    background-color: rgba(13, 202, 240, 0.1);
    color: var(--info-color);
}

/* Quiz Page Styles */
.quiz-container {
    min-height: 100vh;
    background-color: #ffffff;
}

/* Question card transition */
.card {
    transition: opacity 0.2s ease-in-out;
}

.card.question-changing {
    opacity: 0.7;
}

.quiz-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

.quiz-card {
    border: none;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.question-number {
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-right: 1rem;
}

.answer-option {
    transition: all 0.2s ease-in-out;
    cursor: pointer;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 0.5rem;
    border: 2px solid transparent;
}

.answer-option:hover {
    background-color: rgba(13, 110, 253, 0.05);
    border-color: rgba(13, 110, 253, 0.2);
}

.answer-option.selected {
    background-color: rgba(13, 110, 253, 0.1);
    border-color: var(--primary-color);
}

.progress-container {
    background-color: white;
    padding: 1rem;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

/* Results Page Styles */
.results-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
}

.results-card {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
}

.results-header {
    background: linear-gradient(135deg, var(--success-color) 0%, #20c997 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.results-header.failed {
    background: linear-gradient(135deg, var(--danger-color) 0%, #e55353 100%);
}

.score-display {
    font-size: 3rem;
    font-weight: 700;
    margin: 1rem 0;
}

.results-body {
    padding: 2rem;
}

.result-item {
    padding: 1rem;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.result-item.correct {
    background-color: rgba(25, 135, 84, 0.05);
    border-color: rgba(25, 135, 84, 0.28);
}

.result-item.incorrect {
    background-color: rgba(220, 53, 69, 0.05);
    border-color: rgba(220, 53, 69, 0.28);
}

/* Utility Classes */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }

/* Responsive Design */
@media (max-width: 768px) {
    .login-card .card-body {
        padding: 2rem 1.5rem;
    }
    
    .quiz-header {
        padding: 1.5rem 0;
    }
    
    .question-number {
        width: 2rem;
        height: 2rem;
        font-size: 0.9rem;
    }
    
    .answer-option {
        padding: 0.75rem;
    }
    
    .score-display {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .login-container {
        padding: 1rem;
    }
    
    .login-card .card-body {
        padding: 1.5rem 1rem;
    }
    
    .results-header,
    .results-body {
        padding: 1.5rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Loading States */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

.question-nav-scroll {
    overflow-x: auto;
    padding: 0.25rem 0;
    /* Hide scrollbar on desktop, show on mobile when needed */
    scrollbar-width: thin;
}

.question-nav-scroll::-webkit-scrollbar {
    height: 4px;
}

.question-nav-scroll::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.question-nav-scroll::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

.question-nav {
    display: flex;
    gap: 0.75rem;
    min-width: 100%;
    justify-content: flex-start;
    align-items: center;
}

.question-nav-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid;
    background: white;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-decoration: none;
    color: inherit;
    position: relative;
    flex-shrink: 0;
}

/* Unanswered state (default) */
.question-nav-item {
    border-color: #dee2e6;
    color: var(--secondary-color);
}

.question-nav-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(13, 110, 253, 0.15);
}

/* Current question state */
.question-nav-item.current {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    animation: currentPulse 2s infinite;
}

.question-nav-item.current:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
}

/* Answered state */
.question-nav-item.answered {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.question-nav-item.answered::after {
    content: '✓';
    position: absolute;
    top: -6px;
    right: -6px;
    background: var(--success-color);
    color: white;
    font-size: 0.7rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid white;
}

.question-nav-item.answered:hover {
    background: #157347;
    border-color: #157347;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(25, 135, 84, 0.15);
}

/* Current + Answered state */
.question-nav-item.current.answered {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.question-nav-item.current.answered::after {
    background: var(--success-color);
}

/* Pulse animation for current question */
@keyframes currentPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(13, 110, 253, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(13, 110, 253, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(13, 110, 253, 0);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .question-nav-container {
        margin: 0 -1rem;
        border-radius: 0;
        padding: 1rem;
        background: #f8f9fa;
        border-top: 1px solid #dee2e6;
        border-bottom: 1px solid #dee2e6;
    }
    
    .question-nav-scroll {
        padding: 0.5rem 0;
    }
    
    .question-nav {
        justify-content: flex-start;
        padding: 0 1rem;
        gap: 0.5rem;
    }
    
    .question-nav-item {
        min-width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }
    
    /* Show scroll indicator on mobile */
    .question-nav-scroll::after {
        content: '';
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 20px;
        height: 100%;
        background: linear-gradient(90deg, transparent 0%, #f8f9fa 70%);
        pointer-events: none;
        opacity: 0.8;
    }
}

@media (max-width: 576px) {
    .question-nav-item {
        min-width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
}

/* Display Mode Toggle Styles */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* All Questions View Styles */
#allQuestionsContainer .card {
    transition: box-shadow 0.2s ease-in-out;
}

#allQuestionsContainer .card:hover {
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
}

/* All Questions Submit Button */
#submitAllBtn {
    min-width: 200px;
    font-size: 1.1rem;
    padding: 0.875rem 2rem;
    box-shadow: 0 0.25rem 0.5rem rgba(25, 135, 84, 0.3);
    transition: all 0.3s ease-in-out;
}

#submitAllBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(25, 135, 84, 0.4);
}

/* Smooth transitions for mode switching */
#singleQuestionContainer, 
#allQuestionsContainer,
#navigationControls,
#allQuestionsSubmit {
    transition: opacity 0.3s ease-in-out;
}

/* Responsive adjustments for display toggle */
@media (max-width: 768px) {
    .form-check-label {
        font-size: 0.8rem;
    }
    
    #submitAllBtn {
        min-width: 150px;
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}

/* Quiz Completed State Styles */
.quiz-completed {
    opacity: 0.8;
    filter: saturate(0.7);
}

.quiz-completed .answer-option {
    cursor: not-allowed !important;
}

.quiz-completed .answer-option:hover {
    transform: none !important;
    box-shadow: none !important;
}

.quiz-completed .question-nav-item {
    cursor: not-allowed !important;
}

/* Results Display Animation */
#resultsContainer {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Score metrics styling */
.score-metric {
    transition: transform 0.3s ease-in-out;
}

.score-metric:hover {
    transform: scale(1.05);
}

/* Enhanced Answer States for Completed Quiz */
.answer-correct {
    background-color: #d1f2eb !important;
    border-color: var(--success-color) !important;
    border-width: 2px !important;
}

.answer-incorrect {
    background-color: #f8d7da !important;
    border-color: var(--danger-color) !important;
    border-width: 2px !important;
}

.answer-correct-option {
    background-color: #d1f2eb !important;
    border-color: var(--success-color) !important;
    border-width: 2px !important;
}

.answer-unanswered {
    background-color: #f8f9fa !important;
    border-color: #dee2e6 !important;
    opacity: 0.7;
}

/* Question Card States */
.question-card-correct {
    border-color: var(--success-color) !important;
}

.question-card-incorrect {
    border-color: var(--danger-color) !important;
}

.question-card-unanswered {
    border-color: var(--secondary-color) !important;
}

/* Enhanced Navigation States */
.question-nav-item.nav-correct {
    background-color: var(--success-color) !important;
    border-color: var(--success-color) !important;
    color: white !important;
}

.question-nav-item.nav-correct span {
    font-size: 14px;
    line-height: 1;
}

.question-nav-item.nav-correct small {
    font-size: 10px;
    margin-top: 2px;
    display: block;
}

.question-nav-item.nav-incorrect {
    background-color: var(--danger-color) !important;
    border-color: var(--danger-color) !important;
    color: white !important;
}

.question-nav-item.nav-incorrect span {
    font-size: 14px;
    line-height: 1;
}

.question-nav-item.nav-incorrect small {
    font-size: 10px;
    margin-top: 2px;
    display: block;
}

.question-nav-item.nav-unanswered {
    background-color: var(--warning-color) !important;
    border-color: var(--warning-color) !important;
    color: var(--dark-color) !important;
}

.question-nav-item.nav-unanswered span {
    font-size: 14px;
    line-height: 1;
}

.question-nav-item.nav-unanswered small {
    font-size: 10px;
    margin-top: 2px;
    display: block;
}

/* Enhanced navigation hover effects */
.question-nav-item.nav-correct:hover {
    background-color: #157347 !important;
    border-color: #157347 !important;
    transform: translateY(-2px);
}

.question-nav-item.nav-incorrect:hover {
    background-color: #b02a37 !important;
    border-color: #b02a37 !important;
    transform: translateY(-2px);
}

.question-nav-item.nav-unanswered:hover {
    background-color: #ffcd39 !important;
    border-color: #ffcd39 !important;
    transform: translateY(-2px);
}

/* Enhanced navigation layout */
.question-nav-item {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center;
    padding: 4px !important;
}


/* Clean Header Styles */
.quiz-header-simple {
    background-color: white;
    border-bottom: 1px solid #dee2e6;
    margin-bottom: 2rem;
}

.quiz-header-simple h1 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.quiz-info-line {
    font-size: 0.9rem;
    line-height: 1.4;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: space-between;
}

.quiz-info-line span {
    display: inline-block;
}

/* Info row styles */
.info-row-1, .info-row-2 {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.info-row-1 span, .info-row-2 span {
    margin-right: 0;
}

.info-row-2 {
    margin-top: 0;
}

/* Countdown timer */
.quiz-timer {
    font-variant-numeric: tabular-nums;
}

.quiz-timer #timer {
    font-weight: 600;
    color: var(--primary-color);
}

.quiz-timer.is-warning #timer {
    color: var(--danger-color);
}

/* Floating countdown pill, visible while the header timer is scrolled away */
.quiz-timer-float {
    position: fixed;
    top: 0.75rem;
    left: 50%;
    transform: translate(-50%, -150%);
    opacity: 0;
    pointer-events: none;
    padding: 0.35rem 0.9rem;
    background-color: white;
    color: var(--primary-color);
    border: 1px solid currentColor;
    border-radius: 999px;
    box-shadow: var(--box-shadow-lg);
    font-size: 0.9rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    transition: transform 0.2s ease, opacity 0.2s ease;
    /* Above the sticky footer nav (1000); standalone quiz page has no z-index variables */
    z-index: 1020;
}

.quiz-timer-float.is-visible {
    transform: translate(-50%, 0);
    opacity: 1;
}

.quiz-timer-float.is-warning {
    color: var(--danger-color);
}

@media (prefers-reduced-motion: reduce) {
    .quiz-timer-float {
        transition: none;
    }
}

/* Desktop layout - larger gaps */
@media (min-width: 769px) {
    .quiz-info-line {
        gap: 1.5rem;
    }
    
    .info-row-1, .info-row-2 {
        gap: 1.5rem;
    }
}

/* Sticky Footer Navigation */
.sticky-footer-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: white;
    border-top: 1px solid #dee2e6;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sticky-footer-nav .container {
    max-width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
}

.question-nav-footer {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0.25rem 0;
    scrollbar-width: thin;
    scrollbar-color: var(--secondary-color) transparent;
}

.question-nav-footer::-webkit-scrollbar {
    height: 6px;
}

.question-nav-footer::-webkit-scrollbar-track {
    background: transparent;
}

.question-nav-footer::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 3px;
}

.question-nav-footer::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.question-nav-footer-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    width: 36px;
    height: 36px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid #6c757d;
    background: white;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-decoration: none;
    color: var(--secondary-color);
    flex-shrink: 0;
}

.question-nav-footer-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Footer navigation states */
.question-nav-footer-item.answered {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.question-nav-footer-item.incorrect {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
}

.question-nav-footer-item.current {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

/* Question numbering - simple blue squares */
.question-number-simple {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    flex-shrink: 0;
}

/* All Questions Container Updates */
#allQuestionsContainer .card {
    margin-bottom: 2rem;
    border: 1px solid #dee2e6;
}

#allQuestionsContainer .card-body {
    padding: 2rem;
}

.question-header {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.question-text {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.4;
    margin: 0;
}

/* Answer feedback styles matching screenshot */
.answer-option-correct {
    background-color: #d1f2eb !important;
    border-color: var(--success-color) !important;
    border-width: 2px !important;
}

.answer-option-incorrect {
    background-color: #f8d7da !important;
    border-color: var(--danger-color) !important;
    border-width: 2px !important;
}

.answer-option-normal {
    background-color: #f8f9fa;
    border-color: #dee2e6;
    border-width: 1px;
}

/* Correct answer display */
.correct-answer-display {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background-color: #f8f9fa;
    border: 1px solid #cbd8e8;
    font-size: 0.95rem;
    font-weight: 500;
}

/* Add bottom padding to body to account for sticky footer */
body {
    padding-bottom: 80px;
}

/* Hide original question navigation container */
.question-nav-container {
    display: none !important;
}

/* Highlight only the score span in green when quiz is completed */
.quiz-completed #scoreSpan {
    color: var(--success-color);
    font-weight: 600;
}

/* NhaTroVN quiz: focused blue-and-white assessment experience */
.quiz-page {
    --quiz-ink: #102a4c;
    --quiz-primary: #155eef;
    --quiz-primary-dark: #1249b8;
    --quiz-page: #f4f8fd;
    --quiz-surface: #ffffff;
    --quiz-muted: #52657d;
    --quiz-border: #d8e3f0;
    --quiz-focus: #0b69d1;
    --quiz-success: #16794b;
    --quiz-danger: #b42318;
    /* Spacing tokens (mobile-first, 4/8px scale) */
    --quiz-gutter: 16px;
    --quiz-card-padding: 16px;
    --quiz-stack-gap: 12px;
    --quiz-section-space: 24px;
    --quiz-bar-height: 64px;
    --quiz-safe-bottom: env(safe-area-inset-bottom, 0px);
    min-width: 320px;
    /* Room for the fixed submit bar */
    padding-bottom: calc(var(--quiz-bar-height) + var(--quiz-safe-bottom) + 24px);
    overflow-x: hidden;
    background: var(--quiz-page);
    color: var(--quiz-ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.55;
}

.quiz-page *,
.quiz-page *::before,
.quiz-page *::after {
    box-sizing: border-box;
}

.quiz-page [hidden] {
    display: none !important;
}

@media (min-width: 761px) {
    .quiz-page {
        --quiz-gutter: 24px;
        --quiz-card-padding: 24px;
        --quiz-stack-gap: 16px;
        --quiz-section-space: 32px;
        --quiz-bar-height: 72px;
    }
}

@media (min-width: 1200px) {
    .quiz-page {
        --quiz-gutter: 32px;
        --quiz-section-space: 40px;
    }
}

/* Shared page width with fluid, safe-area aware side gutters */
.quiz-page .quiz-container {
    width: 100%;
    max-width: calc(1200px + 2 * var(--quiz-gutter));
    margin-inline: auto;
    padding-right: max(var(--quiz-gutter), env(safe-area-inset-right, 0px));
    padding-left: max(var(--quiz-gutter), env(safe-area-inset-left, 0px));
    background: transparent;
}

/* Reset the legacy full-height white sheet so the page canvas shows through */
.quiz-main > .quiz-container {
    min-height: 0;
}

.quiz-topbar {
    position: relative;
    z-index: 2;
    background: var(--quiz-surface);
    border-bottom: 1px solid var(--quiz-border);
}

.quiz-topbar__inner,
.quiz-topbar__actions,
.quiz-brand,
.quiz-user-chip {
    display: flex;
    align-items: center;
}

.quiz-topbar__inner {
    min-height: 72px;
    justify-content: space-between;
    gap: 24px;
}

.quiz-brand {
    min-width: 0;
    gap: 14px;
    color: var(--quiz-ink);
    text-decoration: none;
}

.quiz-brand__logo {
    display: block;
    width: 144px;
    height: 44px;
    flex: 0 0 144px;
    object-fit: cover;
    object-position: center 50%;
}

.quiz-brand:hover {
    color: var(--quiz-primary-dark);
}

.quiz-brand__name {
    font-size: 1.18rem;
    font-weight: 750;
    letter-spacing: -0.045em;
}

.quiz-brand__divider {
    width: 1px;
    height: 22px;
    background: var(--quiz-border);
}

.quiz-brand__context {
    color: var(--quiz-muted);
    font-size: 0.9rem;
    font-weight: 550;
    white-space: nowrap;
}

.quiz-topbar__actions {
    gap: 20px;
}

/* Page links ("Ôn tập", "Chứng nhận", "Bài test") */
.quiz-topbar__nav {
    display: flex;
    gap: 12px;
}

.quiz-mock-badge {
    padding: 6px 9px;
    border: 1px solid #c1d8fa;
    border-radius: 999px;
    background: #edf5ff;
    color: #174d91;
    font-size: 0.68rem;
    font-weight: 750;
    letter-spacing: 0.045em;
    white-space: nowrap;
}

.quiz-user-chip {
    min-width: 0;
    gap: 10px;
}

.quiz-user-chip__avatar {
    display: grid;
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    place-items: center;
    border: 1px solid #c8d9f0;
    border-radius: 50%;
    background: #eaf2ff;
    color: #164a8a;
    font-size: 0.88rem;
    font-weight: 700;
}

.quiz-user-chip__name {
    max-width: 190px;
    overflow: hidden;
    color: var(--quiz-ink);
    font-size: 0.9rem;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.quiz-exit {
    min-height: 44px;
    padding: 0 14px;
    border: 1px solid var(--quiz-border);
    border-radius: 10px;
    background: var(--quiz-surface);
    color: var(--quiz-ink);
    font: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.quiz-exit:hover {
    border-color: #b6c9e0;
    background: #f7faff;
    color: var(--quiz-primary-dark);
}

/* Topbar links ("Luyện thi" / "Bài thi") share the "Thoát" button look */
a.quiz-exit {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.quiz-main {
    padding: var(--quiz-section-space) 0;
}

.quiz-intro {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: var(--quiz-section-space);
}

.quiz-intro h1 {
    max-width: 720px;
    margin: 0;
    color: var(--quiz-ink);
    font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.15;
}

.quiz-intro p {
    max-width: 65ch;
    margin: 12px 0 0;
    color: var(--quiz-muted);
}

.quiz-intro__detail {
    display: grid;
    gap: 3px;
    min-width: 140px;
    padding-left: 16px;
    border-left: 1px solid #b9cce3;
}

.quiz-intro__detail-label {
    color: var(--quiz-muted);
    font-size: 0.8rem;
}

.quiz-intro__detail-value {
    color: var(--quiz-ink);
    font-variant-numeric: tabular-nums;
    font-weight: 700;
}

.quiz-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 292px;
    align-items: start;
    gap: 32px;
}

.quiz-question-area {
    min-width: 0;
}

.quiz-tabs-shell.question-nav-container {
    display: block !important;
}

.quiz-summary__heading h2 {
    margin: 0;
    color: var(--quiz-ink);
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: -0.015em;
}

/* ===== Topic tabs (mobile-first) =====
   Each tab shows "Chủ đề N", the topic name from the API, and answered/total.
   All four tabs share one row; narrow tabs stack their content vertically. */
.quiz-format-tabs {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 16px;
}

.quiz-format-tab {
    display: grid;
    min-width: 0;
    min-height: 44px;
    align-content: start;
    gap: 4px;
    padding: 8px;
    border: 1px solid var(--quiz-border);
    border-radius: 10px;
    background: var(--quiz-surface);
    color: var(--quiz-ink);
    text-align: left;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease;
}

.quiz-format-tab:hover {
    border-color: #9bb9e0;
    background: #f9fbff;
}

.quiz-format-tab[aria-selected="true"] {
    border-color: var(--quiz-primary);
    background: #edf4ff;
    box-shadow: inset 0 0 0 1px var(--quiz-primary);
}

.quiz-format-tab:focus-visible {
    outline: 3px solid var(--quiz-focus);
    outline-offset: 3px;
}

/* Narrow: head children become rows of the tab grid (index, title, progress) */
.quiz-format-tab__head {
    display: contents;
    color: var(--quiz-muted);
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1.2;
}

.quiz-format-tab__index {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.quiz-format-tab__progress {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    order: 1;
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    white-space: nowrap;
}

.quiz-format-tab__title {
    display: -webkit-box;
    /* Two lines reserved so all tabs line up */
    min-height: 2.5em;
    overflow: hidden;
    font-size: 0.8rem;
    font-weight: 700;
    line-height: 1.25;
    overflow-wrap: break-word;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.quiz-format-tab[aria-selected="true"] .quiz-format-tab__head {
    color: #315f9c;
}

.quiz-format-tab.is-complete .quiz-format-tab__progress {
    color: var(--quiz-success);
}

@media (min-width: 761px) {
    .quiz-format-tabs {
        gap: 10px;
        margin-bottom: 20px;
    }

    .quiz-format-tab {
        padding: 10px;
        border-radius: 12px;
    }

    .quiz-format-tab__title {
        font-size: 0.85rem;
    }
}

/* Small phones: tighter tabs and a third title line so topic names stay readable */
@media (max-width: 440px) {
    .quiz-format-tabs {
        gap: 4px;
    }

    .quiz-format-tab {
        padding: 8px 6px;
    }

    .quiz-format-tab__head {
        font-size: 0.64rem;
    }

    .quiz-format-tab__title {
        min-height: 3.75em;
        font-size: 0.74rem;
        -webkit-line-clamp: 3;
    }
}

@media (max-width: 359px) {
    .quiz-format-tab__title {
        min-height: 5em;
        -webkit-line-clamp: 4;
    }
}

/* Wide: "Chủ đề N" and answered/total share a top row above the title */
@media (min-width: 1001px) {
    .quiz-format-tab {
        padding: 12px 14px;
    }

    .quiz-format-tab__head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 6px;
        font-size: 0.72rem;
    }

    .quiz-format-tab__progress {
        order: 0;
    }

    .quiz-format-tab__title {
        min-height: 0;
        font-size: 0.95rem;
    }
}

.quiz-format-panel[hidden] {
    display: none !important;
}

.quiz-format-panel {
    display: grid;
    gap: var(--quiz-stack-gap);
    scroll-margin-top: 24px;
}

.quiz-format-empty {
    padding: 32px 24px;
    border: 1px dashed #b9cce3;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--quiz-muted);
    text-align: center;
}

.quiz-question-card {
    min-width: 0;
    padding: var(--quiz-card-padding);
    border: 1px solid var(--quiz-border);
    border-radius: 14px;
    background: var(--quiz-surface);
    scroll-margin-top: 24px;
}

.quiz-question-card__heading {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.quiz-question-number {
    display: inline-grid;
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    place-items: center;
    border-radius: 10px;
    background: #eaf2ff;
    color: #164a8a;
    font-size: 0.8rem;
    font-variant-numeric: tabular-nums;
    font-weight: 750;
}

.quiz-question-card h3 {
    margin: 3px 0 0;
    color: #142f52;
    font-size: 1.02rem;
    font-weight: 650;
    line-height: 1.55;
}

.quiz-answer-list {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 0;
    border: 0;
}

.quiz-answer-option {
    display: flex;
    min-height: 48px;
    align-items: flex-start;
    gap: 12px;
    margin: 0;
    padding: 12px 16px;
    border: 1px solid #dce6f2;
    border-radius: 10px;
    background: #fff;
    color: #314862;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.quiz-answer-option:hover {
    border-color: #9bb9e0;
    background: #f7faff;
}

.quiz-answer-option:has(input:checked) {
    border-color: #4b83dc;
    background: #f0f6ff;
    color: #123c76;
}

.quiz-answer-option input[type="radio"],
.quiz-answer-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    margin: 2px 0 0;
    accent-color: var(--quiz-primary);
    cursor: pointer;
}

.quiz-answer-option__text {
    min-width: 0;
    line-height: 1.5;
}

.quiz-answer-option--correct {
    border-color: #74b996 !important;
    background: #f0faf5 !important;
    color: #145c3c !important;
}

.quiz-answer-option--incorrect {
    border-color: #e2a19b !important;
    background: #fff5f4 !important;
    color: #8c251c !important;
}

.quiz-question-hint {
    margin: -4px 0 12px;
    color: var(--quiz-muted);
    font-size: 0.86rem;
    font-weight: 600;
}

.quiz-question-feedback {
    margin-top: 14px;
    color: var(--quiz-muted);
    font-size: 0.86rem;
}

.quiz-question-feedback--incorrect {
    color: var(--quiz-danger);
    font-weight: 600;
}

.quiz-question-feedback strong {
    color: var(--quiz-ink);
}

.quiz-summary {
    position: sticky;
    top: 24px;
    display: grid;
    gap: 0;
    overflow: hidden;
    border: 1px solid var(--quiz-border);
    border-radius: 15px;
    background: var(--quiz-surface);
}

.quiz-summary__section {
    padding: 20px;
}

.quiz-summary__heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.quiz-score {
    display: grid;
    gap: 2px;
    justify-items: end;
    color: var(--quiz-success);
    line-height: 1.2;
}

.quiz-score__label {
    color: var(--quiz-muted);
    font-size: 0.68rem;
    font-weight: 500;
    white-space: nowrap;
}

.quiz-score strong {
    font-size: 0.94rem;
    font-variant-numeric: tabular-nums;
}

.quiz-score__slash {
    padding-inline: 3px;
    color: #718198;
    font-weight: 450;
}

.quiz-summary__count {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin: 24px 0 8px;
    color: #3f5875;
    font-size: 0.84rem;
}

.quiz-summary__count strong {
    color: var(--quiz-ink);
    font-size: 1.4rem;
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

.quiz-progress {
    height: 7px;
    overflow: hidden;
    border-radius: 999px;
    background: #e6edf6;
}

.quiz-progress__fill {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: var(--quiz-primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 220ms ease;
}

.quiz-summary__caption {
    min-height: 22px;
    margin: 8px 0 0;
    color: var(--quiz-muted);
    font-size: 0.78rem;
}

.quiz-summary__timer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid #e5edf6;
    border-bottom: 1px solid #e5edf6;
    background: #f8fbff;
}

.quiz-summary__timer-label {
    color: #435d7b;
    font-size: 0.83rem;
    font-weight: 600;
}

.quiz-summary__timer strong {
    color: #164a8a;
    font-size: 1.1rem;
    font-variant-numeric: tabular-nums;
    font-weight: 750;
}

.quiz-summary__timer.is-warning strong {
    color: var(--quiz-danger);
}

.quiz-summary__note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 20px 20px;
    color: var(--quiz-muted);
}

.quiz-summary__note svg {
    width: 19px;
    height: 19px;
    flex: 0 0 19px;
    margin-top: 1px;
    color: #386eaf;
}

.quiz-summary__note p {
    margin: 0;
    font-size: 0.78rem;
    line-height: 1.5;
}

.quiz-submit-bar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1000;
    border-top: 1px solid var(--quiz-border);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 -8px 24px rgba(16, 42, 76, 0.06);
    padding-bottom: var(--quiz-safe-bottom);
}

.quiz-submit-bar__inner {
    display: flex;
    min-height: var(--quiz-bar-height);
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.quiz-submit-bar__copy {
    display: grid;
    gap: 2px;
}

.quiz-submit-bar__copy strong {
    color: var(--quiz-ink);
    font-size: 0.9rem;
    font-variant-numeric: tabular-nums;
}

.quiz-submit-bar__copy span {
    color: var(--quiz-muted);
    font-size: 0.77rem;
}

.quiz-submit-bar__actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.quiz-back-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 16px;
    border: 1px solid var(--quiz-border);
    border-radius: 10px;
    background: var(--quiz-surface);
    color: #35506e;
    font: inherit;
    font-size: 0.9rem;
    font-weight: 650;
    cursor: pointer;
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.quiz-back-button:hover:not(:disabled) {
    border-color: #a8bfdc;
    background: #f5f9ff;
    color: var(--quiz-primary-dark);
}

.quiz-back-button:disabled {
    background: #f7f9fc;
    color: #8a9ab0;
    cursor: not-allowed;
}

.quiz-back-button svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.quiz-submit-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 0 20px;
    border: 1px solid var(--quiz-primary);
    border-radius: 10px;
    background: var(--quiz-primary);
    color: #fff;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.quiz-submit-button:hover {
    border-color: var(--quiz-primary-dark);
    background: var(--quiz-primary-dark);
}

.quiz-submit-button:active {
    transform: translateY(1px);
}

.quiz-submit-button:disabled {
    border-color: #a9b9cf;
    background: #a9b9cf;
    cursor: not-allowed;
}

.quiz-submit-button svg {
    width: 19px;
    height: 19px;
}

#submitAllBtn.quiz-submit-button {
    min-width: 0;
    padding: 0 20px;
    font-size: 0.92rem;
    box-shadow: 0 5px 12px rgba(21, 94, 239, 0.18);
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

#submitAllBtn.quiz-submit-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 7px 16px rgba(21, 94, 239, 0.22);
}

#submitAllBtn[data-action="next"] .quiz-submit-icon--send,
#submitAllBtn[data-action="submit"] .quiz-submit-icon--next {
    display: none;
}

.quiz-mock-notice {
    margin: 16px 0 0;
    padding: 12px 16px;
    border: 1px solid #b6d3f4;
    border-radius: 10px;
    background: #eff6ff;
    color: #174d91;
    font-size: 0.88rem;
}

.quiz-page :is(button, a, input, textarea):focus-visible {
    outline: 3px solid var(--quiz-focus);
    outline-offset: 3px;
}

.quiz-page ::selection {
    background: #c9ddff;
    color: #102a4c;
}

/* Copy guard (static/js/quiz/quiz-copy-guard.js): no text selection or image dragging */
.quiz-page.is-copy-guarded {
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

.quiz-page.is-copy-guarded :is(input, textarea) {
    -webkit-user-select: text;
    user-select: text;
}

.quiz-page.is-copy-guarded img {
    -webkit-user-drag: none;
}

@media print {
    .quiz-page.is-copy-guarded > * {
        display: none;
    }
}

.quiz-page .quiz-timer-float {
    z-index: 1020;
    border-color: #b8cce5;
    background: #fff;
    color: #164a8a;
}

.quiz-page .quiz-timer-float.is-warning {
    color: var(--quiz-danger);
}

.quiz-page .modal-content {
    overflow: hidden;
    border: 1px solid var(--quiz-border);
    border-radius: 15px;
    color: var(--quiz-ink);
}

.quiz-page .modal-header.bg-success {
    background: #164a8a !important;
}

.quiz-page .modal-title {
    font-weight: 700;
}

.quiz-page .modal-footer .btn-primary,
.quiz-page .modal-footer .btn-success {
    min-height: 44px;
    padding-inline: 18px;
    border-color: var(--quiz-primary);
    background: var(--quiz-primary);
}

.quiz-page .modal-footer .btn-secondary {
    min-height: 44px;
}

.quiz-page .modal-body p {
    color: #3f5875;
}

.quiz-page .quiz-completed .quiz-question-card {
    background: #fbfdff;
}

.quiz-page .question-card-correct .quiz-question-number {
    background: #eaf7f0;
    color: var(--quiz-success);
}

.quiz-page .question-card-incorrect .quiz-question-number {
    background: #fff0ee;
    color: var(--quiz-danger);
}

.quiz-page .answer-option-correct {
    border-color: #74b996 !important;
    background: #f0faf5 !important;
    color: #145c3c;
}

.quiz-page .answer-option-incorrect {
    border-color: #e2a19b !important;
    background: #fff5f4 !important;
    color: #8c251c;
}

@media (max-width: 1000px) {
    .quiz-workspace {
        grid-template-columns: minmax(0, 1fr) 260px;
        gap: 24px;
    }
}

@media (max-width: 760px) {
    /* One row: compact buttons so logo, links, avatar and "Thoát" fit */
    .quiz-topbar__inner {
        min-height: 64px;
        gap: 12px;
    }

    .quiz-topbar__actions,
    .quiz-topbar__nav {
        gap: 8px;
    }

    .quiz-exit {
        min-height: 38px;
        padding-inline: 12px;
        font-size: 0.85rem;
    }

    .quiz-brand {
        gap: 8px;
    }

    .quiz-brand__name {
        font-size: 1.08rem;
    }

    .quiz-brand__context {
        font-size: 0.78rem;
    }

    .quiz-user-chip__name {
        display: none;
    }

    .quiz-user-chip__avatar {
        width: 36px;
        height: 36px;
        flex-basis: 36px;
    }

    .quiz-intro {
        align-items: flex-start;
    }

    .quiz-intro__detail {
        min-width: 110px;
        padding-left: 12px;
    }

    .quiz-workspace {
        grid-template-columns: minmax(0, 1fr);
    }

    .quiz-summary {
        position: static;
        grid-template-columns: minmax(0, 1fr) auto;
        order: 2;
        border-radius: 12px;
    }

    .quiz-summary__section {
        padding: 16px;
    }

    .quiz-summary__count {
        margin-top: 12px;
    }

    .quiz-summary__timer {
        min-width: 150px;
        grid-column: 2;
        grid-row: 1;
        align-items: flex-start;
        justify-content: center;
        flex-direction: column;
        padding: 16px;
        border-top: 0;
        border-bottom: 0;
        border-left: 1px solid #e5edf6;
    }

    .quiz-summary__note {
        grid-column: 1 / -1;
        padding: 0 16px 16px;
    }

    .quiz-answer-option {
        padding: 12px;
    }

    .quiz-submit-bar__copy span {
        display: none;
    }
}

/* Not enough room for "Đào tạo nội bộ" next to the buttons */
@media (max-width: 600px) {
    .quiz-brand__divider,
    .quiz-brand__context {
        display: none;
    }
}

/* The name is already hidden; drop the avatar to keep the buttons on one row */
@media (max-width: 520px) {
    .quiz-user-chip {
        display: none;
    }
}

@media (max-width: 440px) {
    .quiz-topbar__inner {
        gap: 8px;
    }

    .quiz-topbar__actions,
    .quiz-topbar__nav {
        gap: 6px;
    }

    .quiz-page .quiz-brand__logo {
        width: 96px;
        height: 29px;
        flex-basis: 96px;
    }

    .quiz-exit {
        min-height: 36px;
        padding-inline: 9px;
        font-size: 0.8rem;
    }

    .quiz-intro {
        display: block;
    }

    .quiz-intro h1 {
        font-size: 2rem;
    }

    .quiz-intro__detail {
        display: flex;
        align-items: baseline;
        gap: 8px;
        margin-top: 12px;
        padding: 0;
        border: 0;
    }

    .quiz-summary {
        grid-template-columns: minmax(0, 1fr) 130px;
    }

    .quiz-summary__heading h2 {
        font-size: 0.98rem;
    }

    .quiz-summary__timer {
        min-width: 0;
        padding: 12px;
    }

    .quiz-summary__timer-label {
        font-size: 0.72rem;
    }

    .quiz-summary__timer strong {
        font-size: 1rem;
    }

    .quiz-submit-bar__inner {
        gap: 8px;
    }

    .quiz-submit-bar__actions {
        gap: 8px;
    }

    .quiz-submit-bar__copy strong {
        max-width: 138px;
        font-size: 0.77rem;
    }

    .quiz-submit-button {
        min-height: 46px;
        gap: 8px;
        padding-inline: 12px;
        font-size: 0.82rem;
        white-space: nowrap;
    }

    .quiz-back-button {
        min-height: 46px;
        gap: 4px;
        padding-inline: 12px;
        font-size: 0.76rem;
        white-space: nowrap;
    }

    #submitAllBtn.quiz-submit-button {
        min-height: 46px;
        gap: 4px;
        padding-inline: 12px;
        font-size: 0.76rem;
    }

    .quiz-submit-button svg {
        width: 17px;
        height: 17px;
    }
}

@media (max-width: 359px) {
    .quiz-page .quiz-brand__logo {
        width: 76px;
        height: 23px;
        flex-basis: 76px;
    }

    .quiz-topbar__inner {
        gap: 6px;
    }

    .quiz-topbar__actions,
    .quiz-topbar__nav {
        gap: 4px;
    }

    .quiz-exit {
        padding-inline: 7px;
        font-size: 0.75rem;
    }

    .quiz-submit-bar__copy {
        display: none;
    }

    .quiz-submit-bar__inner {
        justify-content: flex-end;
    }
}

@media (prefers-reduced-motion: reduce) {
    .quiz-page *,
    .quiz-page *::before,
    .quiz-page *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Topic cards use human-readable names; format keys remain data-only. */
.quiz-page .quiz-tabs-shell.question-nav-container {
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.quiz-page .quiz-format-panel:focus-visible {
    outline: 3px solid var(--quiz-focus);
    outline-offset: 3px;
}

.quiz-page .quiz-question-card {
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.quiz-page .quiz-answer-option.is-selected {
    border-color: #4b83dc;
    background: #f0f6ff;
    color: #123c76;
}

@media (max-width: 760px) {
    .quiz-page .quiz-timer-float {
        top: 72px;
        right: var(--quiz-gutter);
        left: auto;
        transform: translateY(-150%);
    }

    .quiz-page .quiz-timer-float.is-visible {
        transform: translateY(0);
    }

}