/* ─── OPOCME Quiz — Frontend Styles ─── */

:root {
    --opq-black:       #111111;
    --opq-dark:        #333333;
    --opq-mid:         #666666;
    --opq-light:       #999999;
    --opq-border:      #e0e0e0;
    --opq-bg:          #ffffff;
    --opq-bg-soft:     #f8f8f8;
    --opq-correct-bg:  #f0faf2;
    --opq-correct-bd:  #2d8a4e;
    --opq-wrong-bg:    #fff5f5;
    --opq-wrong-bd:    #c0392b;
    --opq-radius:      10px;
    --opq-shadow:      0 2px 16px rgba(0,0,0,0.08);
    --opq-shadow-lg:   0 6px 32px rgba(0,0,0,0.12);
    --opq-transition:  0.28s ease;
}

/* ── Container ─────────────────────────────────────────────────────────────── */
.opocme-quiz-container {
    max-width: 720px;
    margin: 32px auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--opq-black);
    position: relative;
    overflow: hidden;
}

/* ── Loading ─────────────────────────────────────────────────────────────── */
.opocme-quiz-loading {
    display: flex;
    justify-content: center;
    padding: 48px;
}

.opocme-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--opq-border);
    border-top-color: var(--opq-black);
    border-radius: 50%;
    animation: opq-spin 0.7s linear infinite;
}

@keyframes opq-spin {
    to { transform: rotate(360deg); }
}

/* ── Screens ────────────────────────────────────────────────────────────────── */
.opocme-screen {
    background: var(--opq-bg);
    border: 1px solid var(--opq-border);
    border-radius: var(--opq-radius);
    box-shadow: var(--opq-shadow);
    padding: 40px 40px 36px;
}

@media (max-width: 600px) {
    .opocme-screen { padding: 28px 20px 24px; }
}

/* ── Animations ─────────────────────────────────────────────────────────────── */
@keyframes opq-slide-in {
    from { opacity: 0; transform: translateX(32px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes opq-slide-out {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(-32px); }
}

@keyframes opq-fade-in {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.opocme-animate-in  { animation: opq-slide-in  var(--opq-transition) both; }
.opocme-animate-out { animation: opq-slide-out var(--opq-transition) both; }
.opocme-fade-in     { animation: opq-fade-in   0.4s ease both; }

/* ── Start screen ─────────────────────────────────────────────────────────── */
.opocme-screen--start {
    text-align: center;
}

.opocme-quiz-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: var(--opq-black);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.opocme-quiz-title {
    font-size: 24px;
    font-weight: 800;
    line-height: 1.25;
    margin: 0 0 12px;
    color: var(--opq-black);
}

.opocme-quiz-description {
    font-size: 15px;
    color: var(--opq-mid);
    margin: 0 0 20px;
    line-height: 1.6;
}

.opocme-quiz-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--opq-mid);
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.opocme-meta-divider { color: var(--opq-border); }

.opocme-meta-item strong {
    color: var(--opq-black);
    font-weight: 700;
}

/* ── Completed notice ─────────────────────────────────────────────────────── */
.opocme-completed-notice {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--opq-correct-bg);
    border: 1px solid #b2dfc0;
    color: #1a5c35;
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
    margin-top: 8px;
}

.opocme-completed-check {
    font-weight: 800;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.opocme-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.18s ease;
    text-decoration: none;
    line-height: 1;
}

.opocme-btn--primary {
    background: var(--opq-black);
    color: #fff;
    border-color: var(--opq-black);
}
.opocme-btn--primary:hover {
    background: #333;
    border-color: #333;
    color: #fff;
    text-decoration: none;
}

.opocme-btn--secondary {
    background: #fff;
    color: var(--opq-black);
    border-color: var(--opq-black);
}
.opocme-btn--secondary:hover {
    background: var(--opq-bg-soft);
}

.opocme-btn--ghost {
    background: transparent;
    color: var(--opq-mid);
    border-color: var(--opq-border);
    font-size: 14px;
    padding: 10px 20px;
}
.opocme-btn--ghost:hover {
    color: var(--opq-black);
    border-color: #999;
}

.opocme-btn--large {
    font-size: 16px;
    padding: 14px 36px;
}

/* ── Progress ─────────────────────────────────────────────────────────────── */
.opocme-progress-wrap {
    margin-bottom: 24px;
}

.opocme-progress-bar {
    width: 100%;
    height: 4px;
    background: var(--opq-border);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 8px;
}

.opocme-progress-fill {
    height: 100%;
    background: var(--opq-black);
    border-radius: 2px;
    transition: width 0.4s ease;
}

.opocme-progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--opq-light);
    font-weight: 500;
}

.opocme-quiz-mode-label {
    font-weight: 600;
    color: var(--opq-mid);
}

/* ── Question ─────────────────────────────────────────────────────────────── */
.opocme-question-text {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    margin: 0 0 28px;
    color: var(--opq-black);
}

@media (max-width: 600px) {
    .opocme-question-text { font-size: 16px; }
}

/* ── Options ──────────────────────────────────────────────────────────────── */
.opocme-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 4px;
}

.opocme-option {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 14px 18px;
    background: var(--opq-bg);
    border: 2px solid var(--opq-border);
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s, background 0.15s, transform 0.1s;
    font-size: 15px;
    color: var(--opq-dark);
    line-height: 1.45;
}

.opocme-option:not(:disabled):hover {
	border-color: var(--opq-black);
    transform: translateX(3px);
}

.opocme-option:not(:disabled):active {
    transform: translateX(1px);
}

.opocme-option-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--opq-bg-soft);
    border: 1.5px solid var(--opq-border);
    font-size: 13px;
    font-weight: 700;
    color: var(--opq-mid);
    flex-shrink: 0;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.opocme-option-text { flex: 1; }

/* Disabled states */
.opocme-option--disabled {
    cursor: default;
    transform: none !important;
}

.opocme-option--correct {
    background: var(--opq-correct-bg) !important;
    border-color: var(--opq-correct-bd) !important;
    color: #1a5c35 !important;
}
.opocme-option--correct .opocme-option-letter {
    background: var(--opq-correct-bd);
    border-color: var(--opq-correct-bd);
    color: #fff;
}

.opocme-option--incorrect {
    background: var(--opq-wrong-bg) !important;
    border-color: var(--opq-wrong-bd) !important;
    color: #7d1a1a !important;
}
.opocme-option--incorrect .opocme-option-letter {
    background: var(--opq-wrong-bd);
    border-color: var(--opq-wrong-bd);
    color: #fff;
}

.opocme-option--disabled:not(.opocme-option--correct):not(.opocme-option--incorrect) {
    opacity: 0.5;
}

/* ── Feedback ─────────────────────────────────────────────────────────────── */
.opocme-feedback {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
    animation: opq-fade-in 0.25s ease both;
}

.opocme-feedback--correct {
    background: var(--opq-correct-bg);
    border-left: 4px solid var(--opq-correct-bd);
    color: #1a5c35;
}

.opocme-feedback--incorrect {
    background: var(--opq-wrong-bg);
    border-left: 4px solid var(--opq-wrong-bd);
    color: #7d1a1a;
}

.opocme-feedback-icon {
    font-weight: 800;
    margin-right: 4px;
}

.opocme-feedback-ref {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    opacity: 0.7;
    font-style: italic;
}

/* ── Nav ──────────────────────────────────────────────────────────────────── */
.opocme-question-nav {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
    animation: opq-fade-in 0.2s ease both;
}

/* ── Results ──────────────────────────────────────────────────────────────── */
.opocme-screen--results .opocme-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    gap: 20px;
    flex-wrap: wrap;
}

.opocme-results-title {
    font-size: 22px;
    font-weight: 800;
    margin: 0;
}

.opocme-score-circle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 4px solid var(--opq-black);
    background: var(--opq-bg);
    flex-shrink: 0;
}

.opocme-score-circle.opocme-score--high {
    border-color: var(--opq-correct-bd);
    background: var(--opq-correct-bg);
}
.opocme-score-circle.opocme-score--mid {
    border-color: #b8860b;
    background: #fffbf0;
}
.opocme-score-circle.opocme-score--low {
    border-color: var(--opq-wrong-bd);
    background: var(--opq-wrong-bg);
}

.opocme-score-value {
    font-size: 22px;
    font-weight: 800;
    line-height: 1;
    color: var(--opq-black);
}
.opocme-score-circle.opocme-score--high .opocme-score-value { color: var(--opq-correct-bd); }
.opocme-score-circle.opocme-score--mid  .opocme-score-value { color: #b8860b; }
.opocme-score-circle.opocme-score--low  .opocme-score-value { color: var(--opq-wrong-bd); }

.opocme-score-max {
    font-size: 12px;
    color: var(--opq-light);
    margin-top: 2px;
}

/* Stats row */
.opocme-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 28px;
}

.opocme-stat {
    text-align: center;
    padding: 14px 8px;
    border: 1px solid var(--opq-border);
    border-radius: 8px;
    background: var(--opq-bg-soft);
}

.opocme-stat-value {
    display: block;
    font-size: 28px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
    color: var(--opq-black);
}
.opocme-stat--correct  .opocme-stat-value { color: var(--opq-correct-bd); }
.opocme-stat--incorrect .opocme-stat-value { color: var(--opq-wrong-bd); }

.opocme-stat-label {
    font-size: 12px;
    color: var(--opq-mid);
    font-weight: 500;
}

/* CTA boxes */
.opocme-result-cta {
    border-radius: 8px;
    padding: 20px 24px;
    margin-bottom: 20px;
    text-align: center;
}

.opocme-result-cta p {
    margin: 0 0 16px;
    font-size: 15px;
    color: var(--opq-dark);
}

.opocme-result-cta--soft {
    background: var(--opq-bg-soft);
    border: 1px solid var(--opq-border);
}

.opocme-result-cta--strong {
    background: var(--opq-black);
    border: none;
}
.opocme-result-cta--strong p {
    color: rgba(255,255,255,0.85);
}
.opocme-result-cta--strong .opocme-btn--primary {
    background: #fff;
    color: var(--opq-black);
    border-color: #fff;
}
.opocme-result-cta--strong .opocme-btn--primary:hover {
    background: #f0f0f0;
    border-color: #f0f0f0;
}
.opocme-result-cta--strong .opocme-btn--ghost {
    color: rgba(255,255,255,0.6);
    border-color: rgba(255,255,255,0.2);
    margin-top: 10px;
}
.opocme-result-cta--strong .opocme-btn--ghost:hover {
    color: #fff;
    border-color: rgba(255,255,255,0.5);
}

.opocme-result-cta .opocme-btn + .opocme-btn {
    margin-left: 10px;
}

/* Review */
.opocme-review-section {
    margin-top: 12px;
}

.opocme-toggle-review {
    width: 100%;
    justify-content: center;
}

.opocme-review-list {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.opocme-review-item {
    border-radius: 8px;
    padding: 16px 18px;
    border: 1px solid var(--opq-border);
    background: var(--opq-bg-soft);
    font-size: 14px;
    border-left: 4px solid var(--opq-border);
    transition: box-shadow 0.15s ease;
}

.opocme-review-item.opocme-review--correct {
    border-color: #b2dfc0;
    border-left-color: var(--opq-correct-bd);
    background: #f5fdf7;
}

.opocme-review-item.opocme-review--incorrect {
    border-color: #f5c6c6;
    border-left-color: var(--opq-wrong-bd);
    background: #fff9f9;
}

.opocme-review-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.opocme-review-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 1px;
    background: var(--opq-border);
    color: var(--opq-mid);
}

.opocme-review--correct  .opocme-review-icon {
    background: var(--opq-correct-bd);
    color: #fff;
}
.opocme-review--incorrect .opocme-review-icon {
    background: var(--opq-wrong-bd);
    color: #fff;
}

.opocme-review-qnum {
    color: var(--opq-light);
    font-size: 12px;
    font-weight: 600;
    min-width: 24px;
    padding-top: 4px;
    flex-shrink: 0;
}

.opocme-review-question {
    color: var(--opq-dark);
    flex: 1;
    line-height: 1.55;
    font-weight: 500;
}

.opocme-review-detail {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--opq-border);
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    padding-left: 36px;
}

.opocme-review-wrong {
    color: var(--opq-wrong-bd);
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.opocme-review-wrong::before {
    content: '✗';
    font-weight: 800;
    font-size: 11px;
}

.opocme-review-correct-ans {
    color: var(--opq-correct-bd);
    font-weight: 600;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.opocme-review-correct-ans::before {
    content: '✓';
    font-weight: 800;
    font-size: 11px;
}

/* ── Blocked screen ───────────────────────────────────────────────────────── */
.opocme-screen--blocked {
    text-align: center;
    padding: 48px 40px;
    background: var(--opq-black);
    color: #fff;
}

.opocme-blocked-icon {
    font-size: 40px;
    margin-bottom: 16px;
    filter: grayscale(1) brightness(2);
}

.opocme-blocked-title {
    font-size: 22px;
    font-weight: 800;
    margin: 0 0 12px;
    color: #fff;
}

.opocme-blocked-text {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    max-width: 440px;
    margin: 0 auto 28px;
    line-height: 1.6;
}

.opocme-screen--blocked .opocme-btn--primary {
    background: #fff;
    color: var(--opq-black);
    border-color: #fff;
}
.opocme-screen--blocked .opocme-btn--primary:hover {
    background: #eee;
}