/* ==========================================================================
   Quiz – Custom UI Override Stylesheet
   File: flatsome-child/assets/css/quiz.css
   Prefix: tutor-custom-quiz-
   No CSS variables (hardcoded values), no CSS frameworks.
   ========================================================================== */

/* ==========================================================================
   1. PAGE RESET & BODY
   ========================================================================== */

.tutor-custom-quiz-page-body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 15px;
    color: #1A1A2E;
}

.tutor-custom-quiz-page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 80vh;
}

/* ==========================================================================
   2. TOP BAR
   ========================================================================== */

.tutor-custom-quiz-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #ffffff;
    border-bottom: 1px solid #E5E7EB;
    padding: 0 24px;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 200;
    gap: 16px;
    margin-bottom: 20px;
}

.tutor-custom-quiz-topbar-left-group {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.tutor-custom-quiz-mobile-sidebar-toggle-button {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 12px;
    height: 38px;
    border: none;
    background: #F0F4FF;
    border-radius: 8px;
    color: #2F57EF;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.18s;
}

.tutor-custom-quiz-mobile-sidebar-toggle-button:hover {
    background: #D6E0FF;
}

.tutor-custom-quiz-mobile-sidebar-toggle-button svg {
    display: block;
    flex-shrink: 0;
}

.tutor-custom-quiz-topbar-sidebar-label {
    white-space: nowrap;
}

.tutor-custom-quiz-topbar-quiz-title {
    font-size: 16px;
    font-weight: 700;
    color: #1A1A2E;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 480px;
}

.tutor-custom-quiz-topbar-right-group {
    flex-shrink: 0;
}

.tutor-custom-quiz-back-to-course-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #6B7280;
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid #E5E7EB;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
    white-space: nowrap;
}

.tutor-custom-quiz-back-to-course-link:hover {
    color: #2F57EF;
    border-color: #2F57EF;
    background: #F0F4FF;
    text-decoration: none;
}

/* ==========================================================================
   3. BODY LAYOUT (Sidebar + Main)
   ========================================================================== */

.tutor-custom-quiz-body-layout {
    display: flex;
    flex: 1;
    min-height: 0;
}

/* ==========================================================================
   4. SIDEBAR
   ========================================================================== */

.tutor-custom-quiz-sidebar {
    width: 335px;
    min-width: 335px;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 60px; /* updated by JS: quiz topbar height + theme header height */
    height: calc(100vh - 60px); /* updated by JS */
    overflow: hidden;
    flex-shrink: 0;
    z-index: 100;
}

.tutor-custom-quiz-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 30px 47px;
    flex-shrink: 0;
    background: linear-gradient(321.04deg, #0200B9 22.36%, #020207 77.64%);
    justify-content: center;
    text-align: center;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
}

.tutor-custom-quiz-sidebar-heading-group {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.tutor-custom-quiz-sidebar-heading-icon {
    color: rgba(255,255,255,0.5);
    flex-shrink: 0;
}

.tutor-custom-quiz-sidebar-heading-text {
    font-size: 25px;
    font-weight: 700;
    color: #fff;
    text-transform: none;
    margin: 0;
}

.tutor-custom-quiz-sidebar-close-button {
    display: none;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: none;
    background: rgba(255,255,255,0.1);
    border-radius: 6px;
    color: #ffffff;
    cursor: pointer;
    transition: background 0.18s;
}

.tutor-custom-quiz-sidebar-close-button:hover {
    background: rgba(255,255,255,0.2);
}

/* Question Navigation List */
#tutor-custom-quiz-question-navigation-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px 12px;
    list-style: none;
    margin: 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.15) transparent;
}

#tutor-custom-quiz-question-navigation-list::-webkit-scrollbar {
    width: 4px;
}

#tutor-custom-quiz-question-navigation-list::-webkit-scrollbar-track {
    background: transparent;
}

#tutor-custom-quiz-question-navigation-list::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.18);
    border-radius: 4px;
}

/* Individual question nav item */
.tutor-custom-quiz-question-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.18s;
    margin-bottom: 4px;
    list-style: none;
}

.tutor-custom-quiz-question-nav-item:hover {
    background: rgba(255,255,255,0.08);
}

.tutor-custom-quiz-question-nav-item.tutor-custom-quiz-question-nav-item--active {
    background: rgba(255,255,255,0.15);
}

/* Question number circle */
.tutor-custom-quiz-question-nav-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: transparent;
    color: #000000;
    font-size: 20px;
    font-weight: 400;
    flex-shrink: 0;
    transition: background 0.18s, color 0.18s;
    border: 1px solid #000000;
}

.tutor-custom-quiz-question-nav-item.tutor-custom-quiz-question-nav-item--active .tutor-custom-quiz-question-nav-number {
    background: linear-gradient(321.04deg, #0200B9 22.36%, #020207 77.64%);
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
    border-color: rgba(255, 255, 255, 0.4);
}

.tutor-custom-quiz-question-nav-item.tutor-custom-quiz-question-nav-item--answered .tutor-custom-quiz-question-nav-number {
    background: #27AE60;
    color: #ffffff;
}

/* Question nav label */
.tutor-custom-quiz-question-nav-label {
    font-size: 20px;
    font-weight: 400;
    color: #000;
    line-height: 1.35;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
    transition: color 0.18s;
}

.tutor-custom-quiz-question-nav-item.tutor-custom-quiz-question-nav-item--active .tutor-custom-quiz-question-nav-label {
    color: #400093;
    font-weight: 700;
    font-size: 20px;
}

/* Answered check icon */
.tutor-custom-quiz-question-nav-check {
    flex-shrink: 0;
    color: #27AE60;
    opacity: 0;
    transition: opacity 0.18s;
    display: flex;
    align-items: center;
}

.tutor-custom-quiz-question-nav-item.tutor-custom-quiz-question-nav-item--answered .tutor-custom-quiz-question-nav-check {
    opacity: 1;
}

/* Sidebar Footer: Progress */
.tutor-custom-quiz-sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    flex-shrink: 0;
}

.tutor-custom-quiz-sidebar-progress-text {
    font-size: 12px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
    line-height: 1.5;
}

.tutor-custom-quiz-sidebar-progress-text #tutor-custom-quiz-sidebar-answered-count,
.tutor-custom-quiz-sidebar-progress-text #tutor-custom-quiz-sidebar-total-count {
    color: rgba(255,255,255,0.85);
    font-weight: 600;
}

.tutor-custom-quiz-sidebar-progress-track {
    height: 5px;
    background: rgba(255,255,255,0.1);
    border-radius: 100px;
    overflow: hidden;
}

.tutor-custom-quiz-sidebar-progress-fill {
    height: 100%;
    background: #2F57EF;
    border-radius: 100px;
    transition: width 0.3s ease;
    width: 0%;
}

/* ==========================================================================
   5. MAIN CONTENT AREA
   ========================================================================== */

.tutor-custom-quiz-main-content {
    flex: 1;
    min-width: 0;
    padding: 0 28px 32px;
    overflow-y: auto;
}

.tutor-custom-quiz-content-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 36px 40px;
    box-shadow: 0px 25px 50px -12px #00000040;
    max-width: 820px;
    margin: 0 auto;
}

/* ==========================================================================
   6. START QUIZ SCREEN
   ========================================================================== */

.tutor-custom-quiz-start-screen {
    padding: 8px 0;
}

.tutor-custom-quiz-start-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid #E5E7EB;
}

.tutor-custom-quiz-start-quiz-title {
    font-size: 22px;
    font-weight: 700;
    color: #1A1A2E;
    margin: 0 0 8px;
    line-height: 1.35;
}

.tutor-custom-quiz-start-description {
    font-size: 14px;
    color: #6B7280;
    margin: 0;
    line-height: 1.55;
}

/* Info grid: questions / time / attempts / passing grade */
.tutor-custom-quiz-start-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.tutor-custom-quiz-start-info-item {
    display: flex;
    align-items: center;
    gap: 14px;
    background: #F8F9FE;
    border: 1px solid #E5E7EB;
    border-radius: 12px;
    padding: 16px;
}

.tutor-custom-quiz-start-info-icon {
    width: 38px;
    height: 38px;
    background: #EEF1FF;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2F57EF;
    flex-shrink: 0;
}

.tutor-custom-quiz-start-info-value {
    font-size: 18px;
    font-weight: 700;
    color: #1A1A2E;
    line-height: 1.2;
    display: block;
}

.tutor-custom-quiz-start-info-label {
    font-size: 12px;
    color: #6B7280;
    line-height: 1.2;
    display: block;
    margin-top: 2px;
}

/* Start actions */
.tutor-custom-quiz-start-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.tutor-custom-quiz-start-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 32px;
    background: linear-gradient(135deg, #2F57EF 0%, #1A3AC7 100%);
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    box-shadow: 0 4px 18px rgba(47,87,239,0.3);
}

.tutor-custom-quiz-start-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(47,87,239,0.38);
    color: #ffffff;
    text-decoration: none;
}

.tutor-custom-quiz-start-skip-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 24px;
    background: transparent;
    color: #6B7280;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #E5E7EB;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
}

.tutor-custom-quiz-start-skip-button:hover {
    color: #2F57EF;
    border-color: #2F57EF;
    background: #F0F4FF;
    text-decoration: none;
}

/* Previous attempts info beneath start button */
.tutor-custom-quiz-start-previous-info {
    font-size: 13px;
    color: #9CA3AF;
    margin-top: 12px;
}

/* ==========================================================================
   7. QUIZ HEADER BLOCK (Progress bar + title + meta)
   ========================================================================== */

.tutor-custom-quiz-header-block {
    margin-bottom: 28px;
}

/* Thin progress bar */
.tutor-custom-quiz-question-progress-bar-wrap {
    height: 6px;
    background: #E5E7EB;
    border-radius: 100px;
    overflow: hidden;
    margin-bottom: 20px;
}

.tutor-custom-quiz-question-progress-bar-fill {
    height: 100%;
    background: #2F57EF;
    border-radius: 100px;
    transition: width 0.4s ease;
    width: 0%;
}

/* Title row */
.tutor-custom-quiz-header-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 10px;
}

.tutor-custom-quiz-header-quiz-title {
    font-size: 24px;
    font-weight: 400;
    color: #1A3A6B;
    margin: 0;
    line-height: 1.35;
    flex: 1;
}

/* Timer pill */
.tutor-custom-quiz-header-timer {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #F0F4FF;
    border: 1px solid #C7D6FF;
    border-radius: 100px;
    padding: 5px 12px;
    font-size: 13px;
    font-weight: 600;
    color: #2F57EF;
    white-space: nowrap;
    flex-shrink: 0;
}

.tutor-custom-quiz-header-timer-value {
    font-variant-numeric: tabular-nums;
}

.tutor-custom-quiz-header-timer-value--expired {
    color: #EF4444;
}

.tutor-custom-quiz-header-timer .tutor-custom-quiz-header-timer-icon-running,
.tutor-custom-quiz-header-timer .tutor-custom-quiz-header-timer-icon-expired {
    display: flex;
    align-items: center;
}

/* Meta row: question counter + attempt */
.tutor-custom-quiz-header-meta-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.tutor-custom-quiz-header-question-label {
    font-size: 13px;
    color: #6B7280;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

.tutor-custom-quiz-header-question-label .tutor-quiz-question-counter {
    font-weight: 700;
    color: #2F57EF;
}

.tutor-custom-quiz-header-attempt-label {
    font-size: 13px;
    color: #6B7280;
    font-weight: 500;
}

.tutor-custom-quiz-header-attempt-value {
    font-weight: 700;
    color: #2F57EF;
}

/* Flash / Retry alert */
.tutor-custom-quiz-flash-message-area {
    margin-bottom: 20px;
}

.tutor-custom-quiz-retry-alert-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #FFF3CD;
    border: 1px solid #F59E0B;
    border-radius: 10px;
    padding: 12px 18px;
    gap: 12px;
}

.tutor-custom-quiz-retry-alert-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tutor-custom-quiz-retry-alert-action {
    flex-shrink: 0;
}

.tutor-custom-quiz-reattempt-button {
    padding: 7px 18px;
    background: #F59E0B;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.18s;
}

.tutor-custom-quiz-reattempt-button:hover {
    background: #D97706;
}

/* ==========================================================================
   8. QUESTION CARD
   ========================================================================== */

.tutor-custom-quiz-question-card {
    background: #ffffff;
    border-radius: 14px;
    padding: 0;
}

.tutor-custom-quiz-question-header {
    margin-bottom: 24px;
}

.tutor-custom-quiz-question-title {
    font-size: 18px;
    font-weight: 700;
    color: #1A1A2E;
    line-height: 1.45;
    margin: 0 0 10px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.tutor-custom-quiz-question-number-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 30px;
    padding: 0 6px;
    background: #EEF1FF;
    color: #2F57EF;
    font-size: 13px;
    font-weight: 700;
    border-radius: 8px;
    flex-shrink: 0;
    margin-top: 2px;
}

.tutor-custom-quiz-question-marks {
    font-size: 13px;
    color: #9CA3AF;
    margin: 0 0 6px;
}

.tutor-custom-quiz-question-description {
    font-size: 14px;
    color: #4B5563;
    line-height: 1.6;
    margin-bottom: 18px;
    padding: 14px 16px;
    background: #F8F9FE;
    border-left: 3px solid #2F57EF;
    border-radius: 0 8px 8px 0;
}

/* ==========================================================================
   9. ANSWER OPTIONS (choice-box)
   ========================================================================== */

.quiz-question-ans-choice-area {
    margin: 0;
}

.tutor-custom-quiz-answers-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Option card base */
.tutor-custom-quiz-answer-option {
    position: relative;
}

.tutor-custom-quiz-answer-option-label {
    display: flex;
    align-items: stretch;
    cursor: pointer;
    border: 2px solid #E5E7EB;
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
    background: #ffffff;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

.tutor-custom-quiz-answer-option-label:hover {
    border-color: #93B4FF;
    background: #F8FAFF;
    box-shadow: 0 2px 10px rgba(47,87,239,0.08);
}

/* Hidden input (off-screen but accessible) */
.tutor-custom-quiz-answer-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* Option body layout */
.tutor-custom-quiz-answer-option-body {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    flex: 1;
}

/* Custom radio/checkbox indicator circle */
.tutor-custom-quiz-answer-indicator {
    width: 20px;
    height: 20px;
    border: 2px solid #D1D5DB;
    border-radius: 50%;
    flex-shrink: 0;
    background: #ffffff;
    transition: border-color 0.18s, background 0.18s;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutor-custom-quiz-answer-indicator::after {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #2F57EF;
    opacity: 0;
    transform: scale(0.4);
    transition: opacity 0.18s, transform 0.18s;
}

/* Checkbox style: override with rounded-square */
.question-type-multiple_choice .tutor-custom-quiz-answer-indicator {
    border-radius: 50%;
}

.question-type-multiple_choice .tutor-custom-quiz-answer-indicator::after {
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 10 10' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1.5 5L4 7.5L8.5 2.5' stroke='%23ffffff' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    background-color: #2F57EF;
}

/* Answer text */
.tutor-custom-quiz-answer-text {
    font-size: 15px;
    color: #374151;
    line-height: 1.5;
    flex: 1;
}

/* ─── SELECTED state (JS adds --selected class) ─────────────────────────── */
.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--selected {
    border-color: #2F57EF;
    background: #EEF1FF;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--selected .tutor-custom-quiz-answer-indicator {
    border-color: #2F57EF;
    background: #2F57EF;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--selected .tutor-custom-quiz-answer-indicator::after {
    opacity: 1;
    transform: scale(1);
    background: #ffffff;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--selected .tutor-custom-quiz-answer-text {
    color: #2F57EF;
    font-weight: 600;
}

/* ─── CORRECT state (reveal mode) ──────────────────────────────────────── */
.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--correct {
    border-color: #27AE60;
    background: #F0FBF4;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--correct .tutor-custom-quiz-answer-indicator {
    border-color: #27AE60;
    background: #27AE60;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--correct .tutor-custom-quiz-answer-text {
    color: #166534;
    font-weight: 600;
}

/* ─── INCORRECT state (reveal mode) ────────────────────────────────────── */
.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--incorrect {
    border-color: #EF4444;
    background: #FEF2F2;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--incorrect .tutor-custom-quiz-answer-indicator {
    border-color: #EF4444;
    background: #EF4444;
}

.tutor-custom-quiz-answer-option-label.tutor-custom-quiz-answer-option-label--incorrect .tutor-custom-quiz-answer-text {
    color: #991B1B;
}

/* ─── Image answer variants ─────────────────────────────────────────────── */
.tutor-custom-quiz-answer-option-body--image-only {
    justify-content: center;
    padding: 16px;
}

.tutor-custom-quiz-answer-option-image {
    max-width: 100%;
    max-height: 140px;
    object-fit: contain;
    border-radius: 6px;
    display: block;
}

.tutor-custom-quiz-answer-option-body--image-text {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 18px;
}

/* ==========================================================================
   10. NAVIGATION BUTTONS
   ========================================================================== */

/* Navigation row: [Trước (left)] [Tiếp theo + Nộp bài (right)] */
.tutor-custom-quiz-nav-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid #F3F4F6;
}

.tutor-custom-quiz-nav-left-group {
    display: flex;
    align-items: center;
}

.tutor-custom-quiz-nav-right-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Trước button — outline pill */
.tutor-custom-quiz-prev-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    background: transparent;
    color: #6B7280;
    font-size: 14px;
    font-weight: 500;
    border: 1.5px solid #D1D5DB;
    border-radius: 50px;
    cursor: pointer;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
    text-decoration: none;
    line-height: 1;
}

.tutor-custom-quiz-prev-button:not(:disabled):hover {
    color: #374151;
    border-color: #9CA3AF;
    background: #F9FAFB;
}

.tutor-custom-quiz-prev-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Tiếp theo button — outline pill */
.tutor-custom-quiz-next-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    background: transparent;
    color: #374151;
    font-size: 14px;
    font-weight: 500;
    border: 1.5px solid #D1D5DB;
    border-radius: 50px;
    cursor: pointer;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
    text-decoration: none;
    line-height: 1;
}

.tutor-custom-quiz-next-button:not(:disabled):hover {
    color: #2F57EF;
    border-color: #2F57EF;
    background: #F0F4FF;
}

.tutor-custom-quiz-next-button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* Nộp bài button — dark navy filled pill */
.tutor-custom-quiz-nav-right-group .tutor-custom-quiz-submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
    background: linear-gradient(321.04deg, #0200B9 22.36%, #020207 77.64%);
    color: #fff;
    border-radius: 40px;
    padding: 15px 40px;
    text-transform: none;
    margin: 0;
}

/* Legacy class kept for compatibility */
.tutor-custom-quiz-question-navigation-buttons {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 28px;
    flex-wrap: wrap;
}

/* Keep old next/prev styles for any remaining references */
.tutor-custom-quiz-next-or-submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #2F57EF 0%, #1A3AC7 100%);
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    box-shadow: 0 4px 14px rgba(47,87,239,0.28);
    text-decoration: none;
}

.tutor-custom-quiz-next-or-submit-button:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(47,87,239,0.38);
    color: #ffffff;
    text-decoration: none;
}

.tutor-custom-quiz-next-or-submit-button:disabled {
    background: linear-gradient(135deg, #9FB3F8 0%, #7C92D6 100%);
    box-shadow: none;
    cursor: not-allowed;
    opacity: 0.75;
}

.tutor-custom-quiz-previous-question-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    background: transparent;
    color: #6B7280;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #E5E7EB;
    border-radius: 50px;
    cursor: pointer;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
    text-decoration: none;
}

.tutor-custom-quiz-previous-question-button:hover {
    color: #2F57EF;
    border-color: #2F57EF;
    background: #F0F4FF;
    text-decoration: none;
}

.tutor-custom-quiz-skip-question-button {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: #9CA3AF;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.18s;
    padding: 4px 6px;
}

.tutor-custom-quiz-skip-question-button:hover {
    color: #2F57EF;
}

/* Bulk submit (question_below_each_other layout) */
.tutor-custom-quiz-bulk-submit-area {
    margin-top: 28px;
    display: flex;
    justify-content: center;
}

.tutor-custom-quiz-bulk-submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 40px;
    background: linear-gradient(135deg, #2F57EF 0%, #1A3AC7 100%);
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 18px rgba(47,87,239,0.3);
}

.tutor-custom-quiz-bulk-submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(47,87,239,0.4);
    color: #ffffff;
    text-decoration: none;
}

/* Validation feedback */
.answer-help-block.tutor-custom-quiz-answer-feedback-area {
    margin-top: 10px;
    font-size: 13px;
    color: #EF4444;
    min-height: 0;
}

/* ==========================================================================
   11. QUIZ ATTEMPT AREA
   ========================================================================== */

.tutor-custom-quiz-attempt-area {
    padding: 0;
}

/* ==========================================================================
   12. RESULT MODAL (popup overlay shown after quiz submission)
   ========================================================================== */

@keyframes tutor-quiz-result-modal-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes tutor-quiz-result-modal-slide-up {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.tutor-custom-quiz-result-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 18, 40, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 950;
    padding: 20px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: tutor-quiz-result-modal-fade-in 0.25s ease both;
}

.tutor-custom-quiz-result-modal-dialog {
    background: #ffffff;
    border-radius: 24px;
    padding: 36px 28px 28px;
    max-width: 460px;
    width: 100%;
    box-shadow: 0 24px 64px rgba(0,0,0,0.18);
    text-align: center;
    animation: tutor-quiz-result-modal-slide-up 0.3s ease both;
    animation-delay: 0.06s;
}

/* Score circle */
.tutor-custom-quiz-result-modal-score-area {
    display: flex;
    justify-content: center;
    margin-bottom: 18px;
}

.tutor-custom-quiz-result-modal-score-svg {
    filter: drop-shadow(0 4px 14px rgba(0,0,0,0.1));
}

/* Heading */
.tutor-custom-quiz-result-modal-heading {
    font-size: 22px;
    font-weight: 700;
    color: #1A1A2E;
    margin: 0 0 6px;
}

/* Subtext */
.tutor-custom-quiz-result-modal-subtext {
    font-size: 14px;
    color: #6B7280;
    margin: 0 0 24px;
    line-height: 1.5;
}

/* Stats Grid – 3 equal boxes */
.tutor-custom-quiz-result-modal-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 24px;
}

.tutor-custom-quiz-result-modal-stat-box {
    background: #F8F9FE;
    border: 1px solid #E5E7EB;
    border-radius: 14px;
    padding: 16px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.tutor-custom-quiz-result-modal-stat-box--correct {
    background: #F0FBF4;
    border-color: #BBF7D0;
}

.tutor-custom-quiz-result-modal-stat-box--incorrect {
    background: #FEF2F2;
    border-color: #FECACA;
}

.tutor-custom-quiz-result-modal-stat-number {
    font-size: 26px;
    font-weight: 700;
    color: #1A1A2E;
    line-height: 1;
}

.tutor-custom-quiz-result-modal-stat-number--correct {
    color: #27AE60;
}

.tutor-custom-quiz-result-modal-stat-number--incorrect {
    color: #EF4444;
}

.tutor-custom-quiz-result-modal-stat-label {
    font-size: 12px;
    color: #6B7280;
    font-weight: 500;
    line-height: 1.3;
}

/* Action buttons – stacked full-width */
.tutor-custom-quiz-result-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tutor-custom-quiz-result-modal-actions form {
    margin: 0;
    padding: 0;
}

.tutor-custom-quiz-result-modal-retry-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, #071A78 0%, #0200B9 100%);
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 18px rgba(2,0,185,0.28);
    text-decoration: none;
}

.tutor-custom-quiz-result-modal-retry-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(2,0,185,0.38);
    color: #ffffff;
    text-decoration: none;
}

.tutor-custom-quiz-result-modal-review-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 13px 24px;
    background: transparent;
    color: #374151;
    font-size: 15px;
    font-weight: 500;
    border: 1.5px solid #D1D5DB;
    border-radius: 50px;
    text-decoration: none;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
    box-sizing: border-box;
}

.tutor-custom-quiz-result-modal-review-button:hover {
    color: #1A1A2E;
    border-color: #9CA3AF;
    background: #F9FAFB;
    text-decoration: none;
}

/* Attempts history */
.tutor-custom-quiz-attempts-history-section {
    margin-top: 8px;
}

.tutor-custom-quiz-attempts-history-heading {
    font-size: 16px;
    font-weight: 700;
    color: #1A1A2E;
    margin: 0 0 16px;
}

.tutor-custom-quiz-attempts-table-wrapper {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 1px 8px rgba(0,0,0,0.05);
    border: 1px solid #E5E7EB;
}

.tutor-custom-quiz-attempts-table-wrapper table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.tutor-custom-quiz-attempts-table-wrapper th {
    background: #F8F9FE;
    padding: 13px 18px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: #6B7280;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-bottom: 1px solid #E5E7EB;
}

.tutor-custom-quiz-attempts-table-wrapper td {
    padding: 13px 18px;
    color: #374151;
    border-bottom: 1px solid #F3F4F6;
    vertical-align: middle;
}

.tutor-custom-quiz-attempts-table-wrapper tr:last-child td {
    border-bottom: none;
}

.tutor-custom-quiz-attempts-table-wrapper tr:hover td {
    background: #F8F9FE;
}

/* Review screen */
.tutor-custom-quiz-review-screen {
    padding: 8px 0;
}

.tutor-custom-quiz-review-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid #E5E7EB;
    flex-wrap: wrap;
}

.tutor-custom-quiz-review-back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: #6B7280;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.18s;
}

.tutor-custom-quiz-review-back-link:hover {
    color: #2F57EF;
    text-decoration: none;
}

.tutor-custom-quiz-review-title {
    font-size: 18px;
    font-weight: 700;
    color: #1A1A2E;
    margin: 0;
}

/* ==========================================================================
   13. CONFIRMATION MODAL
   ========================================================================== */

.tutor-custom-quiz-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.22s ease, visibility 0.22s ease;
}

.tutor-custom-quiz-modal-overlay[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
}

.tutor-custom-quiz-modal-dialog {
    background: #ffffff;
    border-radius: 20px;
    padding: 36px 32px;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.16);
    transform: scale(0.93);
    transition: transform 0.22s ease;
    text-align: center;
}

.tutor-custom-quiz-modal-overlay[aria-hidden="false"] .tutor-custom-quiz-modal-dialog {
    transform: scale(1);
}

.tutor-custom-quiz-modal-icon-area {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.tutor-custom-quiz-modal-icon-circle {
    width: 60px;
    height: 60px;
    background: #FFF3CD;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutor-custom-quiz-modal-icon-circle svg {
    color: #F59E0B;
}

.tutor-custom-quiz-modal-heading {
    font-size: 20px;
    font-weight: 700;
    color: #1A1A2E;
    margin: 0 0 10px;
}

.tutor-custom-quiz-modal-body-text {
    font-size: 14px;
    color: #6B7280;
    line-height: 1.6;
    margin: 0 0 28px;
}

.tutor-custom-quiz-modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.tutor-custom-quiz-modal-cancel-button {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    color: #374151;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid #E5E7EB;
    border-radius: 50px;
    cursor: pointer;
    transition: background 0.18s, border-color 0.18s, color 0.18s;
    max-width: 160px;
}

.tutor-custom-quiz-modal-cancel-button:hover {
    background: #F9FAFB;
    border-color: #D1D5DB;
    color: #1A1A2E;
}

.tutor-custom-quiz-modal-confirm-button {
    flex: 1;
    padding: 12px 20px;
    background: linear-gradient(135deg, #2F57EF 0%, #1A3AC7 100%);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.18s, box-shadow 0.18s;
    box-shadow: 0 4px 14px rgba(47,87,239,0.28);
    max-width: 160px;
}

.tutor-custom-quiz-modal-confirm-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(47,87,239,0.38);
}

/* ==========================================================================
   14. PAGINATION NAVIGATION
   ========================================================================== */

.tutor-custom-quiz-pagination-navigation {
    margin-bottom: 24px;
}

.tutor-custom-quiz-pagination-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.tutor-custom-quiz-pagination-item {
    list-style: none;
}

.tutor-custom-quiz-pagination-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: #F8F9FE;
    border: 1px solid #E5E7EB;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    color: #374151;
    text-decoration: none;
    transition: background 0.18s, border-color 0.18s, color 0.18s;
}

.tutor-custom-quiz-pagination-link:hover {
    background: #EEF1FF;
    border-color: #2F57EF;
    color: #2F57EF;
    text-decoration: none;
}

.tutor-custom-quiz-pagination-link.active {
    background: #2F57EF;
    border-color: #2F57EF;
    color: #ffffff;
}

/* ==========================================================================
   15. QUIZ BODY WRAP (from body.php)
   ========================================================================== */

.tutor-quiz-wrap {
    padding: 0;
}

.tutor-custom-quiz-attempt-area .tutor-quiz-wrap {
    padding: 0;
}

/* ==========================================================================
   16. RESPONSIVE — ≤1100px (Sidebar becomes off-canvas drawer)
   ========================================================================== */

@media (max-width: 1100px) {

    .tutor-custom-quiz-mobile-sidebar-toggle-button {
        display: flex;
    }

    .tutor-custom-quiz-topbar-quiz-title {
        max-width: 260px;
    }

    .tutor-custom-quiz-sidebar {
        position: fixed;
        left: 0;
        top: 60px; /* updated by JS */
        height: calc(100vh - 60px); /* updated by JS */
        width: 300px;
        transform: translateX(-100%);
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.28s;
        z-index: 300;
        box-shadow: none;
    }

    .tutor-custom-quiz-sidebar.tutor-custom-quiz-sidebar--mobile-open {
        transform: translateX(0);
        box-shadow: 4px 0 24px rgba(0,0,0,0.18);
    }

    .tutor-custom-quiz-sidebar-close-button {
        display: flex;
    }

    .tutor-custom-quiz-sidebar-backdrop {
        position: fixed;
        inset: 0;
        top: 60px; /* updated by JS */
        background: rgba(0,0,0,0.4);
        z-index: 299;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.25s, visibility 0.25s;
    }

    .tutor-custom-quiz-sidebar-backdrop.tutor-custom-quiz-sidebar-backdrop--visible {
        opacity: 1;
        visibility: visible;
    }

}

/* ==========================================================================
   17. RESPONSIVE — ≤768px
   ========================================================================== */

@media (max-width: 768px) {

    .tutor-custom-quiz-topbar {
        padding: 0 16px;
    }

    .tutor-custom-quiz-topbar-quiz-title {
        font-size: 14px;
        max-width: 180px;
    }

    .tutor-custom-quiz-main-content {
        padding: 20px 16px;
    }

    .tutor-custom-quiz-content-card {
        padding: 24px 20px;
        border-radius: 14px;
    }

    .tutor-custom-quiz-start-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tutor-custom-quiz-meta-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .tutor-custom-quiz-header-title-row {
        flex-direction: column;
        gap: 10px;
    }

    .tutor-custom-quiz-header-timer {
        align-self: flex-start;
    }

    .tutor-custom-quiz-nav-row {
        flex-wrap: wrap;
        gap: 10px;
    }

    .tutor-custom-quiz-nav-right-group {
        flex-wrap: wrap;
    }

    .tutor-custom-quiz-question-title {
        font-size: 16px;
    }

    .tutor-custom-quiz-result-stat-item {
        padding: 0 18px;
    }

    .tutor-custom-quiz-result-stat-number {
        font-size: 22px;
    }

    .tutor-custom-quiz-result-card {
        padding: 28px 18px;
    }

}

/* ==========================================================================
   18. RESPONSIVE — ≤480px
   ========================================================================== */

@media (max-width: 480px) {

    .tutor-custom-quiz-back-to-course-link span {
        display: none;
    }

    .tutor-custom-quiz-back-to-course-link svg {
        flex-shrink: 0;
    }

    .tutor-custom-quiz-start-info-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .tutor-custom-quiz-start-info-item {
        padding: 12px;
        gap: 10px;
    }

    .tutor-custom-quiz-start-info-value {
        font-size: 16px;
    }

    .tutor-custom-quiz-result-modal-dialog {
        padding: 28px 18px 22px;
        border-radius: 20px;
    }

    .tutor-custom-quiz-result-modal-stats-grid {
        gap: 8px;
    }

    .tutor-custom-quiz-result-modal-stat-number {
        font-size: 22px;
    }

    .tutor-custom-quiz-modal-dialog {
        padding: 28px 20px;
    }

    .tutor-custom-quiz-modal-actions {
        flex-direction: column;
    }

    .tutor-custom-quiz-modal-cancel-button,
    .tutor-custom-quiz-modal-confirm-button {
        max-width: 100%;
    }

    .tutor-custom-quiz-question-navigation-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .tutor-custom-quiz-next-or-submit-button,
    .tutor-custom-quiz-previous-question-button {
        justify-content: center;
        width: 100%;
    }

    .tutor-custom-quiz-nav-row {
        flex-direction: column;
        align-items: stretch;
    }

    .tutor-custom-quiz-nav-left-group,
    .tutor-custom-quiz-nav-right-group {
        width: 100%;
    }

    .tutor-custom-quiz-prev-button,
    .tutor-custom-quiz-next-button,
    .tutor-custom-quiz-submit-button {
        justify-content: center;
        width: 100%;
    }

}

/* ==========================================================================
   19. ACCESSIBILITY: Focus styles
   ========================================================================== */

.tutor-custom-quiz-next-or-submit-button:focus-visible,
.tutor-custom-quiz-previous-question-button:focus-visible,
.tutor-custom-quiz-prev-button:focus-visible,
.tutor-custom-quiz-next-button:focus-visible,
.tutor-custom-quiz-submit-button:focus-visible,
.tutor-custom-quiz-start-button:focus-visible,
.tutor-custom-quiz-result-review-button:focus-visible,
.tutor-custom-quiz-result-back-button:focus-visible,
.tutor-custom-quiz-modal-confirm-button:focus-visible,
.tutor-custom-quiz-modal-cancel-button:focus-visible {
    outline: 3px solid #2F57EF;
    outline-offset: 3px;
}

/* ── Hide floating contact widget on quiz page ───────────────────────────────── */
body.single-quiz .cf-widget.cf-widget--bottom-right {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
    opacity: 0 !important;
}

/* ==========================================================================
   20. PRINT: Hide non-content elements
   ========================================================================== */

@media print {
    .tutor-custom-quiz-topbar,
    .tutor-custom-quiz-sidebar,
    .tutor-custom-quiz-question-navigation-buttons,
    .tutor-custom-quiz-modal-overlay {
        display: none !important;
    }

    .tutor-custom-quiz-main-content {
        padding: 0;
    }
}