/**
 * BizQuiz – responsive, touch-friendly styles
 * Works on all devices; ready for future PWA/app use.
 */

/* -------------------------------------------------------------------------
   Variables (quiz-specific)
   ------------------------------------------------------------------------- */
.quiz-page, .bs-dashboard {
    --bizquiz-primary: #6366f1;
    --bizquiz-primary-hover: #4f46e5;
    --bizquiz-primary-light: #e0e7ff;
    --bizquiz-success: #059669;
    --bizquiz-success-bg: #d1fae5;
    --bizquiz-fun-accent: #f59e0b;
    --bizquiz-card-bg: #ffffff;
    --bizquiz-card-border: #e5e7eb;
    --bizquiz-text-muted: #6b7280;
    --bizquiz-radius: 12px;
    --bizquiz-radius-sm: 8px;
    --bizquiz-touch-min: 44px;
    --bizquiz-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --bizquiz-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

/* -------------------------------------------------------------------------
   Base: quiz page and container
   ------------------------------------------------------------------------- */
.quiz-page {
    background: linear-gradient(180deg, #f5f3ff 0%, #fafafa 20%);
    min-height: 100vh;
}

.bizquiz-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
}

@media (min-width: 640px) {
    .bizquiz-container {
        padding: 1.5rem 1.25rem 2rem;
    }
}

@media (min-width: 1024px) {
    .bizquiz-container {
        padding: 2rem 1.5rem 3rem;
    }
}

/* -------------------------------------------------------------------------
   Typography
   ------------------------------------------------------------------------- */
.bizquiz-container h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.bizquiz-container h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #374151;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.bizquiz-container p {
    margin-bottom: 0.75rem;
    color: #4b5563;
}

.bizquiz-container .bizquiz-lead {
    font-size: 1rem;
    color: var(--bizquiz-text-muted);
    margin-bottom: 1.5rem;
}

/* -------------------------------------------------------------------------
   Cards (quiz list, question blocks, result cards)
   ------------------------------------------------------------------------- */
.bizquiz-card {
    background: var(--bizquiz-card-bg);
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius);
    padding: 1rem;
    margin-bottom: 0.75rem;
    box-shadow: var(--bizquiz-shadow);
}

@media (min-width: 640px) {
    .bizquiz-card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }
}

.bizquiz-card h3,
.bizquiz-card .bizquiz-card-title {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

/* -------------------------------------------------------------------------
   Buttons – touch-friendly min height
   ------------------------------------------------------------------------- */
.quiz-page .btn,
.quiz-page .btn-primary,
.quiz-page .btn-secondary,
.quiz-page button[type="submit"],
.quiz-page input[type="submit"] {
    min-height: var(--bizquiz-touch-min);
    min-width: 44px;
    padding: 0.6rem 1.25rem;
    font-size: 1rem;
    border-radius: var(--bizquiz-radius-sm);
    font-weight: 600;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.quiz-page .btn-small {
    min-height: 40px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.quiz-page .btn-primary {
    background: var(--bizquiz-primary);
    border-color: var(--bizquiz-primary);
    color: #fff;
}

.quiz-page .btn-primary:hover,
.quiz-page .btn-primary:focus {
    background: var(--bizquiz-primary-hover);
    border-color: var(--bizquiz-primary-hover);
}

/* -------------------------------------------------------------------------
   Form inputs – readable and touch-friendly
   ------------------------------------------------------------------------- */
.quiz-page .bizquiz-container input[type="text"],
.quiz-page .bizquiz-container input[type="number"],
.quiz-page .bizquiz-container input[type="email"],
.quiz-page .bizquiz-container textarea,
.quiz-page .bizquiz-container select {
    width: 100%;
    max-width: 100%;
    min-height: var(--bizquiz-touch-min);
    padding: 0.65rem 0.75rem;
    font-size: 16px; /* avoids zoom on focus on iOS */
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius-sm);
    background: #fff;
    -webkit-tap-highlight-color: transparent;
}

.quiz-page .bizquiz-container textarea {
    min-height: 100px;
    resize: vertical;
}

.quiz-page .bizquiz-container label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 500;
    color: #374151;
}

/* Form hint text (helper text under inputs) */
.quiz-page .bizquiz-container .form-hint {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.875rem;
    color: var(--bizquiz-text-muted);
    font-weight: 400;
}

/* Creator forms: card wrapper and fieldsets for logical grouping */
.bizquiz-creator-card {
    background: var(--bizquiz-card-bg);
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--bizquiz-shadow);
}

.bizquiz-creator-card .bizquiz-fieldset {
    margin-bottom: 1.5rem;
}

.bizquiz-creator-card .bizquiz-fieldset:last-of-type {
    margin-bottom: 0;
}

.bizquiz-creator-card .bizquiz-fieldset-legend {
    font-size: 0.95rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 0.75rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--bizquiz-card-border);
}

.bizquiz-creator-card .bizquiz-fieldset-legend + p,
.bizquiz-creator-card .bizquiz-fieldset-legend + div {
    margin-top: 0;
}

.bizquiz-creator-card label .required {
    color: #b91c1c;
}

/* Radio/checkbox – larger hit area */
.quiz-page .bizquiz-container input[type="radio"],
.quiz-page .bizquiz-container input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.quiz-page .bizquiz-container label:has(input[type="radio"]),
.quiz-page .bizquiz-container label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    min-height: var(--bizquiz-touch-min);
    cursor: pointer;
}

/* -------------------------------------------------------------------------
   Quiz mode picker (Fun / Formal / Cards / Top Trumps)
   ------------------------------------------------------------------------- */
.bizquiz-mode-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

@media (min-width: 640px) {
    .bizquiz-mode-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.bizquiz-mode-card {
    display: block;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    position: relative;
}

/* Hide radio inputs; the card itself is the click target. */
.bizquiz-mode-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.bizquiz-mode-card-body {
    background: #ffffff;
    border: 2px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius);
    padding: 1rem 1rem 0.9rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease, background 0.15s ease;
    min-height: 96px;
}

.bizquiz-mode-card:hover .bizquiz-mode-card-body {
    transform: translateY(-1px);
    border-color: #c7d2fe;
}

.bizquiz-mode-icon {
    font-size: 1.25rem;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.bizquiz-mode-title {
    font-weight: 700;
    color: #111827;
    margin-bottom: 0.35rem;
}

.bizquiz-mode-desc {
    color: var(--bizquiz-text-muted);
    font-size: 0.92rem;
    line-height: 1.35;
}

/* Selected state: input checked + next sibling card body. */
.bizquiz-mode-card input[type="radio"]:checked + .bizquiz-mode-card-body {
    border-color: var(--bizquiz-primary);
    background: var(--bizquiz-primary-light);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* -------------------------------------------------------------------------
   Edit form – Picture reveal panel (image, reveal settings, answer mode)
   ------------------------------------------------------------------------- */
.bizquiz-picture-reveal-panel {
    margin-top: 0.5rem;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius-sm);
    padding: 1rem 1.25rem;
    margin: 1rem 0 1.25rem;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #475569;
    margin: 0 0 0.75rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings .bizquiz-field-row {
    margin-bottom: 1rem;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings .bizquiz-field-row:last-child {
    margin-bottom: 0;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings label {
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings select {
    max-width: 100%;
    font-size: 1rem;
}

.bizquiz-picture-reveal-panel .bizquiz-reveal-settings .form-hint {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.85rem;
    color: var(--bizquiz-text-muted);
}

.bizquiz-picture-reveal-panel .bizquiz-section-divider {
    margin: 1.25rem 0 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--bizquiz-card-border);
}

.bizquiz-picture-reveal-panel .bizquiz-image-source-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    align-items: center;
}

.bizquiz-picture-reveal-panel .bizquiz-image-source-row label {
    margin-right: 0;
}

/* Reveal settings block when placed above preview (Picture reveal only) */
.bizquiz-reveal-settings-above-preview {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

/* Add-question form: preview section and submit (consistent with rest of app) */
.bizquiz-add-question-preview {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: #f8fafc;
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius-sm);
}

.bizquiz-add-question-preview-title {
    font-size: 1rem;
    font-weight: 600;
    color: #374151;
    margin: 0 0 0.35rem;
}

.bizquiz-add-question-preview-hint {
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
}

.bizquiz-add-question-preview-content {
    min-height: 80px;
    padding: 0.75rem;
    background: #fff;
    border-radius: var(--bizquiz-radius-sm);
    border: 1px solid var(--bizquiz-card-border);
}

.bizquiz-add-question-submit-wrap {
    margin-top: 1.25rem;
    margin-bottom: 0;
}

.bizquiz-add-question-submit-wrap .btn-primary {
    margin-right: 0.5rem;
}

/* Add-question section container (consistent card/section styling) */
.bizquiz-add-question-section {
    margin-bottom: 2rem;
    border: 2px solid var(--bizquiz-primary);
    border-radius: var(--bizquiz-radius);
    padding: 1.25rem;
    background: #fafafa;
}

.bizquiz-add-question-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #374151;
    margin: 0 0 0.35rem;
}

.bizquiz-add-question-section-hint {
    margin-bottom: 0.75rem;
}

/* Add-question form: distinct control styling so inputs/selects stand out */
#add-question-form input[type="text"],
#add-question-form input[type="number"],
#add-question-form textarea {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
}
#add-question-form input[type="text"]:focus,
#add-question-form input[type="number"]:focus,
#add-question-form textarea:focus {
    background: #fff;
    border-color: var(--bizquiz-primary);
    outline: none;
}
#add-question-form select {
    background: #eff6ff;
    border: 1px solid #93c5fd;
}
#add-question-form select:focus {
    background: #dbeafe;
    border-color: var(--bizquiz-primary);
    outline: none;
}
#add-question-form .bizquiz-form-step-content input[type="text"],
#add-question-form .bizquiz-form-step-content input[type="number"],
#add-question-form .bizquiz-form-step-content textarea,
#add-question-form .bizquiz-form-step-content select {
    box-sizing: border-box;
}

/* Collapsible form steps (details/summary) – focus one section at a time */
.bizquiz-form-step {
    margin-bottom: 1rem;
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius-sm);
    background: #fff;
    overflow: hidden;
}
.bizquiz-form-step summary {
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: #374151;
    background: #f1f5f9;
    cursor: pointer;
    list-style: none;
    user-select: none;
}
.bizquiz-form-step summary::-webkit-details-marker {
    display: none;
}
.bizquiz-form-step summary::before {
    content: '\25b6';
    display: inline-block;
    margin-right: 0.5rem;
    font-size: 0.7rem;
    transition: transform 0.2s;
}
.bizquiz-form-step[open] summary::before {
    transform: rotate(90deg);
}
.bizquiz-form-step summary:hover {
    background: #e2e8f0;
}
.bizquiz-form-step-content {
    padding: 1rem 1.25rem;
    background: #fafafa;
    border-top: 1px solid var(--bizquiz-card-border);
}

/* -------------------------------------------------------------------------
   Quiz options (play page) – big tap targets
   ------------------------------------------------------------------------- */
.bizquiz-option,
.bizquiz-container .question-option {
    display: block;
    min-height: var(--bizquiz-touch-min);
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border: 2px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius-sm);
    background: #fff;
    cursor: pointer;
    font-size: 1rem;
    transition: border-color 0.15s, background 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.bizquiz-option:hover,
.bizquiz-container .question-option:hover {
    border-color: var(--bizquiz-primary);
    background: var(--bizquiz-primary-light);
}

.bizquiz-option:focus,
.bizquiz-container .question-option:focus {
    outline: 2px solid var(--bizquiz-primary);
    outline-offset: 2px;
}

.bizquiz-option input,
.question-option input {
    margin-right: 0.5rem;
}

/* -------------------------------------------------------------------------
   Messages (success, error, warning)
   ------------------------------------------------------------------------- */
.quiz-page .message {
    padding: 0.75rem 1rem;
    border-radius: var(--bizquiz-radius-sm);
    margin-bottom: 1rem;
}

.quiz-page .message.success {
    background: var(--bizquiz-success-bg);
    border: 1px solid var(--bizquiz-success);
    color: #065f46;
}

.quiz-page .message.error {
    background: #fee2e2;
    border: 1px solid #dc2626;
    color: #991b1b;
}

.quiz-page .message.warning {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    color: #92400e;
}

/* -------------------------------------------------------------------------
   Question card (play + edit)
   ------------------------------------------------------------------------- */
.bizquiz-question-card,
.quiz-page fieldset.bizquiz-question-card {
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--bizquiz-card-bg);
    box-shadow: var(--bizquiz-shadow);
}

.bizquiz-question-card legend,
.quiz-page fieldset.bizquiz-question-card legend {
    font-weight: 600;
    padding: 0 0.5rem;
}

@media (min-width: 640px) {
    .bizquiz-question-card,
    .quiz-page fieldset.bizquiz-question-card {
        padding: 1.25rem;
    }
}

/* -------------------------------------------------------------------------
   Progress indicator (play)
   ------------------------------------------------------------------------- */
.bizquiz-progress-wrap {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.bizquiz-progress-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--bizquiz-text-muted);
}

.bizquiz-progress-bar {
    flex: 1;
    min-width: 120px;
    height: 8px;
    background: var(--bizquiz-card-border);
    border-radius: 999px;
    overflow: hidden;
}

.bizquiz-progress-fill {
    height: 100%;
    background: var(--bizquiz-primary);
    border-radius: 999px;
    transition: width 0.25s ease;
}

/* -------------------------------------------------------------------------
   Results block (play results) – card style
   ------------------------------------------------------------------------- */
.bizquiz-results {
    text-align: center;
    padding: 1.5rem 1rem;
}

.bizquiz-results-card {
    background: var(--bizquiz-card-bg);
    border: 1px solid var(--bizquiz-card-border);
    border-radius: var(--bizquiz-radius);
    padding: 2rem 1.5rem;
    margin: 0 auto 1.5rem;
    max-width: 420px;
    box-shadow: var(--bizquiz-shadow-lg);
}

.bizquiz-results-card .score {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bizquiz-primary);
    margin: 0.5rem 0;
    line-height: 1.2;
}

.bizquiz-results-card .score-detail {
    font-size: 1rem;
    color: var(--bizquiz-text-muted);
    margin-bottom: 1.5rem;
}

.bizquiz-results-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1rem;
}

.bizquiz-results .score {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--bizquiz-primary);
}

/* -------------------------------------------------------------------------
   Status pill (creator dashboard)
   ------------------------------------------------------------------------- */
.bizquiz-status-pill {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.bizquiz-status-pill--draft {
    background: #fef3c7;
    color: #92400e;
}

.bizquiz-status-pill--published {
    background: var(--bizquiz-success-bg);
    color: #065f46;
}

/* -------------------------------------------------------------------------
   Links and nav
   ------------------------------------------------------------------------- */
.bizquiz-container a {
    color: var(--bizquiz-primary);
    text-decoration: none;
}

.bizquiz-container a:hover {
    text-decoration: underline;
}

.bizquiz-container .bizquiz-back {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: var(--bizquiz-touch-min);
    padding: 0.5rem 0;
}

/* -------------------------------------------------------------------------
   Browse grid / list
   ------------------------------------------------------------------------- */
.bizquiz-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.bizquiz-list li {
    margin-bottom: 0.75rem;
}

@media (min-width: 640px) {
    .bizquiz-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1rem;
    }
}

/* -------------------------------------------------------------------------
   Share / QR block
   ------------------------------------------------------------------------- */
.bizquiz-share-box {
    background: var(--bizquiz-primary-light);
    border: 1px solid var(--bizquiz-primary);
    border-radius: var(--bizquiz-radius);
    padding: 1rem;
    margin: 1rem 0;
}

.bizquiz-share-box label {
    font-size: 0.9rem;
    color: var(--bizquiz-text-muted);
    display: block;
    margin-bottom: 0.35rem;
}

.bizquiz-share-box .bizquiz-share-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.bizquiz-share-box .bizquiz-share-row input {
    flex: 1;
    min-width: 0;
}

/* -------------------------------------------------------------------------
   Button group (no extra margin on first)
   ------------------------------------------------------------------------- */
.bizquiz-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

/* -------------------------------------------------------------------------
   Safe area for notched devices and future app
   ------------------------------------------------------------------------- */
@supports (padding: env(safe-area-inset-bottom)) {
    .bizquiz-container {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
        padding-bottom: max(2rem, env(safe-area-inset-bottom));
    }
}

@media (min-width: 640px) {
    @supports (padding: env(safe-area-inset-bottom)) {
        .bizquiz-container {
            padding-left: max(1.25rem, env(safe-area-inset-left));
            padding-right: max(1.25rem, env(safe-area-inset-right));
        }
    }
}

/* -------------------------------------------------------------------------
   Feedback overlay (correct/wrong) – shown before next question when
   "show correct to players" is on. Standard animations + category variants.
   ------------------------------------------------------------------------- */
.bizquiz-feedback-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    animation: bizquiz-feedback-fade-in 0.25s ease-out;
}

.bizquiz-feedback-inner {
    padding: 2rem;
    border-radius: var(--bizquiz-radius);
    text-align: center;
    min-width: 200px;
    animation: bizquiz-feedback-scale-in 0.35s ease-out;
}

.bizquiz-feedback-overlay.correct .bizquiz-feedback-inner {
    background: #ecfdf5;
    border: 3px solid #059669;
    color: #065f46;
}

.bizquiz-feedback-overlay.wrong .bizquiz-feedback-inner {
    background: #fef2f2;
    border: 3px solid #dc2626;
    color: #991b1b;
}

.bizquiz-feedback-icon {
    font-size: 4rem;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.bizquiz-feedback-label {
    font-size: 1.25rem;
    font-weight: 700;
}

@keyframes bizquiz-feedback-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes bizquiz-feedback-scale-in {
    from { transform: scale(0.85); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* Basic: check / cross with pulse */
.bizquiz-feedback-correct-basic .bizquiz-feedback-icon {
    animation: bizquiz-feedback-pulse 0.5s ease-out;
}

.bizquiz-feedback-wrong-basic .bizquiz-feedback-icon {
    animation: bizquiz-feedback-shake 0.45s ease-out;
}

@keyframes bizquiz-feedback-pulse {
    0% { transform: scale(0.5); opacity: 0; }
    60% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes bizquiz-feedback-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* Science theme: green/blue correct, red wrong */
.bizquiz-feedback-overlay.correct.bizquiz-feedback-science .bizquiz-feedback-inner {
    background: linear-gradient(135deg, #d1fae5 0%, #e0f2fe 100%);
    border-color: #0ea5e9;
    color: #0369a1;
}

.bizquiz-feedback-overlay.wrong.bizquiz-feedback-science .bizquiz-feedback-inner {
    border-color: #b91c1c;
}

/* Music theme: purple/gold accent */
.bizquiz-feedback-overlay.correct.bizquiz-feedback-music .bizquiz-feedback-inner {
    background: linear-gradient(135deg, #f5f3ff 0%, #fef9c3 100%);
    border-color: #a855f7;
    color: #6b21a8;
}

.bizquiz-feedback-overlay.wrong.bizquiz-feedback-music .bizquiz-feedback-inner {
    border-color: #c2410c;
    background: #fff7ed;
}

/* Geography theme: earth tones */
.bizquiz-feedback-overlay.correct.bizquiz-feedback-geography .bizquiz-feedback-inner {
    background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
    border-color: #15803d;
}

.bizquiz-feedback-overlay.wrong.bizquiz-feedback-geography .bizquiz-feedback-inner {
    border-color: #b45309;
    background: #fffbeb;
}

/* General knowledge */
.bizquiz-feedback-overlay.correct.bizquiz-feedback-general .bizquiz-feedback-inner {
    border-color: var(--bizquiz-primary);
    background: var(--bizquiz-primary-light);
    color: #3730a3;
}

/* Custom image: inner shows image only */
.bizquiz-feedback-custom-image .bizquiz-feedback-inner {
    padding: 0.5rem;
}

.bizquiz-feedback-custom-image .bizquiz-feedback-icon {
    font-size: 0;
    margin: 0;
}

.bizquiz-feedback-custom-image .bizquiz-feedback-inner img {
    max-width: 280px;
    max-height: 280px;
    display: block;
    border-radius: var(--bizquiz-radius-sm);
}

/* Free-tier ad stack: commission network + advertiser-program inventory */
.bizquiz-ad-stack {
    margin: 1rem 0;
    clear: both;
}
.bizquiz-ad-stack .bizquiz-ad-layer {
    margin: 0.75rem 0;
    padding: 0.5rem 0;
    border-top: 1px solid var(--bizquiz-card-border);
    max-width: 100%;
    overflow: hidden;
}
.bizquiz-ad-stack .bizquiz-ad-layer:first-child {
    border-top: 0;
    padding-top: 0;
    margin-top: 0;
}
.bizquiz-ad-stack iframe,
.bizquiz-ad-stack img {
    max-width: 100%;
    height: auto;
}

.bizquiz-mode-card--locked {
    opacity: 0.55;
}
.bizquiz-mode-card--locked .bizquiz-mode-card-body {
    cursor: not-allowed;
}