/* ===== OQS Public Styles ===== */
:root {
    --oqs-primary: #4f46e5;
    --oqs-primary-dark: #3730a3;
    --oqs-success: #16a34a;
    --oqs-danger: #dc2626;
    --oqs-warning: #d97706;
    --oqs-bg: #f8fafc;
    --oqs-card: #ffffff;
    --oqs-border: #e2e8f0;
    --oqs-text: #1e293b;
    --oqs-muted: #64748b;
    --oqs-radius: 12px;
    --oqs-shadow: 0 4px 24px rgba(0,0,0,0.08);
}
body {
    margin: 0;
    font-family: Segoe UI, Tahoma, sans-serif;
}
/* === Quiz List === */
.oqs-quiz-list { padding: 20px 0; }
.oqs-list-title { font-size: 1.8em; color: var(--oqs-text); margin-bottom: 24px; }
.oqs-cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.oqs-empty { color: var(--oqs-muted); font-style: italic; }

.oqs-quiz-card {
    background: var(--oqs-card);
    border: 1px solid var(--oqs-border);
    border-radius: var(--oqs-radius);
    box-shadow: var(--oqs-shadow);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex; flex-direction: column;
}
.oqs-quiz-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.12); }

.oqs-quiz-card-header {
    background: linear-gradient(135deg, var(--oqs-primary), var(--oqs-primary-dark));
    padding: 20px;
}
.oqs-quiz-card-header h3 { color: #fff; margin: 0; font-size: 1.1em; }
.oqs-quiz-card-body { padding: 16px 20px; flex: 1; }
.oqs-quiz-desc { color: var(--oqs-muted); font-size: 0.9em; margin: 0 0 12px; }
.oqs-quiz-meta { display: flex; gap: 12px; flex-wrap: wrap; }
.oqs-quiz-meta span { background: var(--oqs-bg); border: 1px solid var(--oqs-border); border-radius: 20px; padding: 4px 12px; font-size: 0.8em; color: var(--oqs-muted); }
.oqs-quiz-card-footer { padding: 16px 20px; border-top: 1px solid var(--oqs-border); }

/* === Library (Grade/Subject Tabs) === */
.oqs-library { padding: 10px 0 20px; }
.oqs-library-header { display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-bottom: 14px; }
.oqs-library-title { margin: 0; font-size: 1.8em; color: var(--oqs-text); }
.oqs-library-search { display:flex; align-items:center; gap:8px; }
.oqs-library-search input[type="text"]{ width: min(520px, 75vw); max-width:100%; padding:10px 14px; border:1px solid var(--oqs-border); border-radius: 10px; }
.oqs-library-search button{ padding:10px 14px; border-radius: 10px; border:1px solid var(--oqs-border); background:#fff; cursor:pointer; }

.oqs-grade-tabs, .oqs-subject-tabs { display:flex; gap:10px; flex-wrap:wrap; margin: 12px 0; }
.oqs-tab { display:inline-flex; align-items:center; gap:6px; padding:10px 14px; border:1px solid var(--oqs-border); border-radius: 12px; background:#fff; color: var(--oqs-text); text-decoration:none; font-weight:600; box-shadow: 0 2px 10px rgba(0,0,0,0.04); }
.oqs-tab:hover{ border-color:#c7d2fe; }
.oqs-tab.is-active{ border-color:#a5b4fc; background:#eef2ff; }
.oqs-tab-count{ color: var(--oqs-muted); font-weight:700; }

.oqs-library-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap:18px; margin-top: 10px; }
.oqs-library-card{ background: var(--oqs-card); border:1px solid var(--oqs-border); border-radius: 14px; padding: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.06); display:flex; flex-direction:column; gap:12px; }
.oqs-library-card-title{ font-weight: 800; color: var(--oqs-text); line-height: 1.35; min-height: 44px; }
.oqs-library-card-meta{ display:flex; align-items:center; gap:10px; color: var(--oqs-muted); font-size: 0.9em; flex-wrap:wrap; }
.oqs-library-card-actions{ margin-top:auto; }
.oqs-library .oqs-empty{ background:#fff; border:1px dashed var(--oqs-border); border-radius: 14px; padding: 18px; }

/* === Buttons === */
.oqs-btn {
    display: inline-block; padding: 10px 24px; border-radius: 8px; border: none;
    cursor: pointer; font-size: 0.95em; font-weight: 600; text-decoration: none;
    transition: all 0.2s; text-align: center;
}
.oqs-btn-primary { background: var(--oqs-primary); color: #fff; }
.oqs-btn-primary:hover { background: var(--oqs-primary-dark); color: #fff; }
.oqs-btn-secondary { background: #fff; color: var(--oqs-primary); border: 2px solid var(--oqs-primary); }
.oqs-btn-secondary:hover { background: var(--oqs-primary); color: #fff; }
.oqs-btn-success { background: var(--oqs-success); color: #fff; }
.oqs-btn-success:hover { background: #15803d; }
.oqs-btn-large { padding: 14px 32px; font-size: 1.05em; width: 100%; }

/* === Quiz Wrapper === */
.oqs-quiz-wrapper { max-width: 100%; }

/* === Start Screen === */
.oqs-start-card {
    background: var(--oqs-card);
    border-radius: var(--oqs-radius);
    box-shadow: var(--oqs-shadow);
    padding: 40px;
    text-align: center;
}
.oqs-start-card h2 { font-size: 1.8em; color: var(--oqs-text); margin-bottom: 12px; }
.oqs-desc { color: var(--oqs-muted); margin-bottom: 24px; }
.oqs-info-grid { display: flex; justify-content: center; gap: 32px; margin: 24px 0; }
.oqs-info-item { text-align: center; }
.oqs-info-val { display: block; font-size: 2em; font-weight: 700; color: var(--oqs-primary); }
.oqs-info-item span:last-child { font-size: 0.85em; color: var(--oqs-muted); }

.oqs-guest-form { margin: 20px 0; }
.oqs-guest-form p { color: var(--oqs-muted); margin-bottom: 10px; }
.oqs-input {
    width: 100%; padding: 10px 14px; border: 2px solid var(--oqs-border);
    border-radius: 8px; font-size: 0.95em; margin-bottom: 10px;
    transition: border-color 0.2s; box-sizing: border-box;
}
.oqs-input:focus { border-color: var(--oqs-primary); outline: none; }

/* === Quiz Header === */
.oqs-quiz-header {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--oqs-card); border-radius: var(--oqs-radius);
    padding: 16px 20px; margin-bottom: 20px;
    box-shadow: var(--oqs-shadow); gap: 20px;
}
.oqs-progress-wrap { flex: 1; }
.oqs-progress-label { font-size: 0.9em; color: var(--oqs-muted); margin-bottom: 6px; }
.oqs-progress-bar { background: var(--oqs-bg); border-radius: 20px; height: 8px; overflow: hidden; }
.oqs-progress-fill { background: linear-gradient(90deg, var(--oqs-primary), #818cf8); height: 100%; border-radius: 20px; transition: width 0.4s ease; width: 0%; }

.oqs-timer { display: flex; align-items: center; gap: 8px; font-size: 1.3em; font-weight: 700; color: var(--oqs-primary); min-width: 90px; }
.oqs-timer.oqs-warning { color: var(--oqs-warning); animation: pulse 1s infinite; }
.oqs-timer.oqs-danger  { color: var(--oqs-danger);  animation: pulse 0.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }

/* === Questions === */
.oqs-question-slide {
    background: var(--oqs-card); border-radius: var(--oqs-radius);
    padding: 32px; box-shadow: var(--oqs-shadow); margin-bottom: 20px;
}
.oqs-question-text { font-size: 15px; font-weight: 600; color: var(--oqs-text); margin-bottom: 24px; line-height: 1.6; }
.oqs-question-num { color: var(--oqs-primary); }

/* Make question images responsive */
.oqs-question-text img,
.oqs-review-q-icon { display: inline-block; margin-right: 8px; }
.oqs-review-q-text img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 10px 0 0;
    border-radius: 10px;
}

/* === Answers – radio style (dùng cho cả mode 1 lẫn mode 2) === */
.oqs-answers-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.oqs-answers-list {
    margin: 0 !important;
    padding: 0 !important;
}

.oqs-answers-list li {
    margin: 0 !important;
    padding: 0 !important;
}

.oqs-answer-item {
    margin-bottom: 0 !important;
}
.oqs-answer-item {
    display: flex; align-items: center; gap: 8px;
    padding: 1px 2px;
    border-radius: 6px; cursor: pointer; transition: background 0.15s;
    user-select: none; font-size: 0.97em; color: var(--oqs-text); line-height: 1.5;
}
 
.oqs-answer-item:hover  { background: #f1f5f9; }
.oqs-answer-item.selected { background: #ede9fe; }
.oqs-answer-item.correct  { background: #dcfce7; }
.oqs-answer-item.wrong    { background: #fee2e2; }
.oqs-answer-item.reveal-correct { background: #dcfce7; }

/* Radio native */
.oqs-answer-item input[type="radio"] {
	align-items: center;margin: 0;
    accent-color: var(--oqs-primary);
    flex-shrink: 0; cursor: pointer;
}

/* Chữ cái A / B / C / D */
.oqs-answer-letter {
    font-weight: 700; color: var(--oqs-primary);
    min-width: 18px; flex-shrink: 0;
}
.oqs-answer-item.correct  .oqs-answer-letter { color: var(--oqs-success); }
.oqs-answer-item.wrong    .oqs-answer-letter { color: var(--oqs-danger); }

/* Nội dung đáp án */
.oqs-answer-text { flex: 1; }

/* === Quiz Footer === */
.oqs-quiz-footer { display: flex; gap: 12px; justify-content: space-between; }

/* === Result Screen === */
.oqs-result-wrapper { background: var(--oqs-card); border-radius: var(--oqs-radius); padding: 40px; box-shadow: var(--oqs-shadow);}
.oqs-result-header { text-align: center; margin-bottom: 32px; }
.oqs-score-circle {
    width: 160px; height: 160px; border-radius: 50%; margin: 0 auto 20px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    border: 8px solid;
}
.oqs-score-circle.pass { border-color: var(--oqs-success); color: var(--oqs-success); }
.oqs-score-circle.fail { border-color: var(--oqs-danger);  color: var(--oqs-danger); }
.oqs-score-num   { font-size: 2.5em; font-weight: 700; line-height: 1; }
.oqs-score-label { font-size: 0.85em; opacity: 0.8; }
.oqs-result-title { font-size: 1.6em; font-weight: 700; }
.oqs-result-title.pass { color: var(--oqs-success); }
.oqs-result-title.fail { color: var(--oqs-danger); }
.oqs-result-stats { display: flex; justify-content: center; gap: 32px; margin: 16px 0; }
.oqs-stat { text-align: center; }
.oqs-stat-val { display: block; font-size: 1.5em; font-weight: 700; color: var(--oqs-text); }
.oqs-stat-label { font-size: 0.8em; color: var(--oqs-muted); }

.oqs-review-section h3 { font-size: 1.1em; border-bottom: 2px solid var(--oqs-border); padding-bottom: 8px; margin-bottom: 16px; }
.oqs-review-question { margin-bottom: 20px; border-left: none; padding-left: 0; }
.oqs-review-q-text { font-weight: 600; margin-bottom: 8px; color: var(--oqs-text);}
.oqs-review-ans { font-size: 0.9em; padding: 4px 0; }
.oqs-review-ans.correct-ans { color: var(--oqs-success); }
.oqs-review-ans.wrong-ans   { color: var(--oqs-danger); }

.oqs-result-actions { text-align: center; margin-top: 24px; }
.oqs-loading { text-align: center; padding: 40px; color: var(--oqs-muted); font-size: 1.1em; }
.oqs-spinner { display: inline-block; width: 32px; height: 32px; border: 3px solid var(--oqs-border); border-top-color: var(--oqs-primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin-bottom: 12px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* === Responsive === */
@media (max-width: 600px) {
    .oqs-quiz-wrapper { padding: 10px; }
    .oqs-start-card { padding: 24px 16px; }
    .oqs-info-grid { gap: 16px; }
    .oqs-quiz-header { flex-direction: column; gap: 10px; }
    .oqs-question-slide { padding: 20px 16px; }
    .oqs-cards-grid { grid-template-columns: 1fr; }
    .oqs-result-stats { gap: 16px; }
}

/* ===== v1.3.0 - New Features ===== */

/* --- Featured Image --- */
.oqs-card-img, .oqs-start-img img {
    width: 100%; max-height: 180px; object-fit: cover;
    border-radius: var(--oqs-radius) var(--oqs-radius) 0 0;
}
.oqs-library-card-img img {
    width: 100%; max-height: 140px; object-fit: cover;
    border-radius: 10px 10px 0 0; margin: -16px -16px 8px; width: calc(100% + 32px);
}

/* --- Nav Dots --- */
.oqs-quiz-nav { padding: 12px 0 0; }
.oqs-quiz-nav-dots { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.oqs-nav-dot {
    width: 28px; height: 28px; border-radius: 50%; background: var(--oqs-border);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.7em; font-weight: 700; cursor: pointer; transition: all 0.2s;
    border: 2px solid transparent;
}
.oqs-nav-dot[data-state="answered"] { background: #a5b4fc; border-color: var(--oqs-primary); }
.oqs-nav-dot.is-current { background: var(--oqs-primary); color: #fff; }

/* --- Share Bar --- */
.oqs-share-bar { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin: 16px 0 8px; }
.oqs-share-fb { background: #1877f2; color: #fff; }
.oqs-share-fb:hover { background: #166fe5; color: #fff; }
.oqs-share-copy { background: #fff; border: 2px solid var(--oqs-border); color: var(--oqs-text); }
.oqs-share-copy:hover { background: var(--oqs-bg); }

/* --- Leaderboard (in result) --- */
.oqs-result-leaderboard { margin-top: 28px; border-top: 2px solid var(--oqs-border); padding-top: 20px; }
.oqs-result-leaderboard h3 { margin-bottom: 12px; font-size: 1.05em; }
.oqs-lb-loading { color: var(--oqs-muted); font-style: italic; }

/* --- Leaderboard Table --- */
.oqs-lb-table, .oqs-leaderboard table {
    width: 100%; border-collapse: collapse; font-size: 0.92em;
}
.oqs-lb-table th, .oqs-leaderboard th {
    background: var(--oqs-bg); padding: 10px 12px; text-align: left;
    border-bottom: 2px solid var(--oqs-border); font-weight: 700;
}
.oqs-lb-table td, .oqs-leaderboard td {
    padding: 10px 12px; border-bottom: 1px solid var(--oqs-border);
}
.oqs-lb-table tr.oqs-lb-top td { background: #fefce8; font-weight: 600; }
.oqs-leaderboard { padding: 16px 0; }
.oqs-leaderboard-title { font-size: 1.4em; margin-bottom: 16px; }

/* --- Pagination --- */
.oqs-pagination { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 20px; justify-content: center; }
.oqs-page-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: 8px;
    border: 1px solid var(--oqs-border); background: #fff;
    color: var(--oqs-text); font-weight: 600; text-decoration: none;
    transition: all 0.2s;
}
.oqs-page-btn:hover { border-color: var(--oqs-primary); color: var(--oqs-primary); }
.oqs-page-btn.is-active { background: var(--oqs-primary); color: #fff; border-color: var(--oqs-primary); }

/* --- Flatsome Compat --- */
.flatsome-breadcrumb ~ .oqs-quiz-wrapper,
.oqs-template-wrap { --oqs-primary: var(--color-primary, #4f46e5); }

/* --- Attempt notice --- */
.oqs-attempt-notice { background: #fee2e2; border-radius: 8px; padding: 10px 14px; }

/* --- Responsive v2 --- */
@media (max-width: 600px) {
    .oqs-quiz-nav-dots { gap: 4px; }
    .oqs-nav-dot { width: 24px; height: 24px; font-size: 0.65em; }
    .oqs-share-bar { flex-direction: column; }
    .oqs-share-bar .oqs-btn { width: 100%; text-align: center; }
    .oqs-lb-table td:last-child, .oqs-lb-table th:last-child { display: none; }
}

/* ===== v1.4.0 - Pretty URL pagination ===== */
.oqs-page-ellipsis {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; color: var(--oqs-muted); font-weight: 700;
}
.oqs-page-prev, .oqs-page-next {
    width: auto; padding: 0 14px; font-size: 0.85em;
}
.oqs-review mjx-container[display="true"] {
    display: inline-block !important;
    margin: 0 !important;
}

.oqs-review mjx-container {
    vertical-align: middle !important;
}
/*icon xem dap an*/
.fill-red-700 {
    fill: #b91c1c;
}
.fill-green {
    fill: #67c23a;
}
.w-4 {
    width: 1rem;
}
.h-4 {
    height: 1rem;
}
.oqs-review-q-text .w-5 {
  display: inline-flex;
  align-items: center;
  width: 1.0rem; /* w-5 = 20px */
  margin-right: 4px;
  vertical-align: middle;
}
.oqs-question-text p,
.oqs-review-q-text p {
  display: inline;
}

.oqs-question-text p:has(img) {
  display: block;
  margin-top: 10px;
}

.oqs-question-text mjx-container[display="true"] {
  display: inline !important;
}
.oqs-review-q-text p:has(img) {
  display: block;
  margin-top: 10px;
}

.oqs-review-q-text mjx-container[display="true"] {
  display: inline !important;
}
.flex-row {
    flex-direction: row;
}
.flex {
    display: flex;
}

/* ===================================================
   MODE 2 - All Questions at Once (layout riêng)
   =================================================== */

/* Container mode 2 */
.oqs-all-questions-mode {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Mỗi block câu hỏi trong mode 2 */
.oqs-question-block {
    padding: 18px 0 14px;
    border-bottom: 1px solid var(--oqs-border);
}
.oqs-question-block:last-child { border-bottom: none; }

/* Mode 2: options dùng chung .oqs-answers-list nhưng thêm padding trái */
.oqs-all-questions-mode .oqs-answers-list { padding-left: 4px; }

/* Sticky submit footer mode 2 */
.oqs-quiz-wrapper[data-display-mode="2"] .oqs-quiz-footer {
    position: sticky;
    bottom: 0;
    background: #fff;
    border-top: 1px solid var(--oqs-border);
    padding: 12px 0 4px;
    z-index: 10;
    justify-content: flex-end;
}

/* Progress label mode 2 */
.oqs-quiz-wrapper[data-display-mode="2"] .oqs-progress-label {
    font-size: 0.95em;
    color: var(--oqs-text);
    font-weight: 500;
}

.oqs-review-question p {
    margin-bottom: 0em !important;
}

.oqs-review-question {
    margin-bottom: 1.5em !important;
	border-bottom: 1px solid var(--oqs-border);
}
/* ============================================================
   OQS HOMEPAGE SHORTCODE [quiz_homepage]
   ============================================================ */

.oqs-hp {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    color: #1e293b;
    --hp-green: #16a34a;
    --hp-green-dark: #15803d;
    --hp-border: #e2e8f0;
    --hp-bg-alt: #f8fafc;
    --hp-muted: #64748b;
    --hp-radius: 12px;
    --hp-shadow: 0 4px 20px rgba(0,0,0,0.07);
}

/* --- HERO --- */
.oqs-hp-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #1e4d8c 100%);
    border-radius: var(--hp-radius);
    padding: 48px 40px;
    margin-bottom: 40px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.oqs-hp-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(34,197,94,0.08) 0%, transparent 70%);
}
.oqs-hp-hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    position: relative;
    z-index: 1;
}
.oqs-hp-hero-text { flex: 1; }
.oqs-hp-hero-title {
    font-size: clamp(1.6em, 3vw, 2.4em);
    font-weight: 800;
    margin: 0 0 12px;
    color: #4ade80;
    line-height: 1.2;
}
.oqs-hp-hero-desc {
    font-size: 1em;
    color: #cbd5e1;
    margin: 0 0 20px;
    line-height: 1.6;
    max-width: 520px;
}
.oqs-hp-hero-students {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9em;
    color: #94a3b8;
}
.oqs-hp-hero-students strong { color: #4ade80; }
.oqs-hp-avatars { display: flex; }
.oqs-hp-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.3);
    font-size: 1.1em;
    margin-right: -8px;
}
.oqs-hp-hero-img {
    flex-shrink: 0;
    width: 160px;
    height: 140px;
    background: rgba(255,255,255,0.08);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.oqs-hp-hero-illus { font-size: 5em; }

/* --- SECTIONS --- */
.oqs-hp-section { margin-bottom: 44px; }
.oqs-hp-section-alt { background: var(--hp-bg-alt); border-radius: var(--hp-radius); padding: 10px 10px; }
.oqs-hp-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 8px;
}
.oqs-hp-section-title {
    font-size: 1.25em;
    font-weight: 800;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #0f172a;
}
.oqs-hp-bar {
    display: inline-block;
    width: 4px;
    height: 22px;
    background: var(--hp-green);
    border-radius: 3px;
    flex-shrink: 0;
}
.oqs-hp-see-all {
    font-size: 0.9em;
    color: var(--hp-green);
    text-decoration: none;
    font-weight: 600;
    white-space: nowrap;
}
.oqs-hp-see-all:hover { text-decoration: underline; }

/* --- SUBJECT GRID --- */
.oqs-hp-subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 18px;
}
.oqs-hp-subject-card {
    background: #fff;
    border: 1px solid var(--hp-border);
    border-radius: var(--hp-radius);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    box-shadow: var(--hp-shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}
.oqs-hp-subject-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.oqs-hp-subject-thumb {
    height: 120px;
    background: linear-gradient(135deg, #1e293b, #334155);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.oqs-hp-subject-thumb img { width: 100%; height: 100%; object-fit: cover; }
.oqs-hp-subject-icon { font-size: 3em; }
.oqs-hp-subject-name {
    font-weight: 700;
    padding: 10px 14px 4px;
    font-size: 0.95em;
}
.oqs-hp-subject-count {
    padding: 0 14px 14px;
    font-size: 0.82em;
    color: var(--hp-muted);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.oqs-hp-see-more { color: var(--hp-green); font-weight: 600; }

/* --- QUIZ GRID --- */
.oqs-hp-quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.oqs-hp-quiz-card {
    background: #fff;
    border: 1px solid var(--hp-border);
    border-radius: var(--hp-radius);
    box-shadow: var(--hp-shadow);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s;
}
.oqs-hp-quiz-card:hover { box-shadow: 0 8px 28px rgba(0,0,0,0.11); }
.oqs-hp-quiz-card-body {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.oqs-hp-quiz-title {
    font-weight: 700;
    font-size: 0.95em;
    line-height: 1.45;
    margin-bottom: 6px;
    flex: 1;
}
.oqs-hp-quiz-title a { color: #0f172a; text-decoration: none; }
.oqs-hp-quiz-title a:hover { color: var(--hp-green); }
.oqs-hp-quiz-subject {
    font-size: 0.8em;
    color: var(--hp-muted);
    margin-bottom: 10px;
}
.oqs-hp-quiz-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.82em;
    color: var(--hp-muted);
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--hp-border);
}
.oqs-hp-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.oqs-hp-meta-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: #fee2e2;
    color: #dc2626;
    border-radius: 50%;
    font-size: 0.7em;
    font-weight: 700;
    flex-shrink: 0;
}
.oqs-hp-quiz-card-footer {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.oqs-hp-btn-start {
    display: inline-block;
    background: var(--hp-green);
    color: #fff;
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 0.88em;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.2s;
    flex: 1;
    text-align: center;
}
.oqs-hp-btn-start:hover { background: var(--hp-green-dark); color: #fff; }
.oqs-hp-quiz-actions { display: flex; gap: 6px; }
.oqs-hp-ico {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--hp-border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.15s;
}
.oqs-hp-ico:hover { background: #f1f5f9; }

/* --- GRADE CARDS (Lop 10/11/12) --- */
.oqs-hp-grade-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
}
.oqs-hp-grade-card {
    background: #fff;
    border: 1px solid var(--hp-border);
    border-left: 4px solid var(--hp-green);
    border-radius: var(--hp-radius);
    padding: 20px;
    box-shadow: var(--hp-shadow);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.oqs-hp-grade-name {
    font-size: 1.15em;
    font-weight: 800;
    margin: 0;
    color: #0f172a;
}
.oqs-hp-grade-desc {
    font-size: 0.85em;
    color: var(--hp-muted);
    margin: 0;
    line-height: 1.55;
    flex: 1;
}
.oqs-hp-grade-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: auto;
}
.oqs-hp-grade-count {
    font-size: 0.82em;
    color: var(--hp-muted);
    font-weight: 600;
}
.oqs-hp-grade-btn {
    display: inline-block;
    background: var(--hp-green);
    color: #fff;
    padding: 7px 16px;
    border-radius: 8px;
    font-size: 0.85em;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.2s;
    white-space: nowrap;
}
.oqs-hp-grade-btn:hover { background: var(--hp-green-dark); color: #fff; }

/* --- BLOG GRID --- */
.oqs-hp-blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.oqs-hp-blog-card {
    background: #fff;
    border: 1px solid var(--hp-border);
    border-radius: var(--hp-radius);
    box-shadow: var(--hp-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.oqs-hp-blog-thumb-wrap { display: block; }
.oqs-hp-blog-thumb {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}
.oqs-hp-blog-body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.oqs-hp-blog-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.78em;
    color: var(--hp-muted);
    margin-bottom: 10px;
}
.oqs-hp-blog-cat {
    background: #dcfce7;
    color: var(--hp-green-dark);
    padding: 2px 10px;
    border-radius: 20px;
    font-weight: 600;
}
.oqs-hp-blog-title {
    font-size: 1em;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.4;
}
.oqs-hp-blog-title a { color: #0f172a; text-decoration: none; }
.oqs-hp-blog-title a:hover { color: var(--hp-green); }
.oqs-hp-blog-excerpt {
    font-size: 0.85em;
    color: var(--hp-muted);
    line-height: 1.55;
    margin: 0 0 12px;
    flex: 1;
}
.oqs-hp-blog-read-more {
    color: var(--hp-green);
    font-weight: 700;
    font-size: 0.88em;
    text-decoration: none;
    margin-top: auto;
}
.oqs-hp-blog-read-more:hover { text-decoration: underline; }

/* --- Responsive --- */
@media (max-width: 640px) {
    .oqs-hp-hero { padding: 28px 20px; }
    .oqs-hp-hero-inner { flex-direction: column; }
    .oqs-hp-hero-img { width: 100%; height: 80px; }
    .oqs-hp-hero-illus { font-size: 3em; }
    .oqs-hp-section-alt { padding: 18px 14px; }
    .oqs-hp-subject-grid { grid-template-columns: repeat(2, 1fr); }
    .oqs-hp-grade-cards { grid-template-columns: 1fr; }
}

/* --- Fix: Subject section header stacked layout (Xem tất cả below title) --- */
.oqs-hp-section-header--stacked {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}
.oqs-hp-section-header--stacked .oqs-hp-see-all {
    font-size: 0.88em;
    margin-top: 2px;
}

/* --- Fix: Subject card footer row --- */
.oqs-hp-subject-count {
    padding: 0 14px 14px;
    font-size: 0.82em;
    color: var(--hp-muted);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* --- Fix: Subject icon - dùng SVG book icon giống ảnh --- */
.oqs-hp-subject-icon {
    font-size: 2.5em;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}



/* 1) Mỗi <p> là 1 dòng (không wrap), nếu dài thì kéo ngang */
.oqs-question-text p{
  display: flex !important;
  align-items: center;
  flex-wrap: nowrap !important;
  white-space: nowrap !important;
  gap: 6px;
  margin: 0 0 10px 0 !important;

  overflow-x: auto;                 /* dài quá thì scroll ngang */
  -webkit-overflow-scrolling: touch;
}

/* 2) MathJax display="true" -> ép về inline để nằm cùng dòng */
.oqs-question-text mjx-container[display="true"],
.oqs-review-question mjx-container[display="true"]{
  display: inline-block !important;
  margin: 0 !important;
}

.oqs-question-text mjx-container[display="true"] mjx-math,
.oqs-review-question mjx-container[display="true"] mjx-math{
  display: inline-block !important;
  margin: 0 !important;
}


/* 3) Nếu trong <p> có hình thì hình nằm dòng riêng */
.oqs-question-text p img,
.oqs-review-question p img{
  display: block !important;
  white-space: normal !important;
  margin: 8px 0 0 0 !important;
}


/* Ẩn thanh scroll ngang */
.oqs-question-text p::-webkit-scrollbar,
.oqs-review-question p::-webkit-scrollbar{
  height: 4px;
}

/* Review: ép p luôn xuống dòng */
.oqs-review-q-text p{
  display: block !important;
  width: 100%;
  margin: 0 0 10px 0 !important;
  clear: both;
}

/* MathJax display=true trong review: nếu muốn nó inline cùng dòng p */
.oqs-review-q-text mjx-container[display="true"]{
  display: inline-block !important;
  margin: 0 !important;
}
.oqs-review-q-text mjx-container[display="true"] mjx-math{
  display: inline-block !important;
  margin: 0 !important;
}
/* Căn trái tất cả công thức dạng display */
mjx-container[display="true"] {
    display: block !important;
    text-align: left !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* Bắt cả phần mjx-math bên trong */
mjx-container[display="true"] mjx-math {
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* Ẩn popup menu của MathJax (MathJax v3) */
mjx-container mjx-menu,
mjx-container mjx-context-menu,
mjx-container .MJX_ContextMenu,
mjx-container .MJX_Menu {
  display: none !important;
}

/* Chặn thao tác mở menu trên công thức */
mjx-container {
  -webkit-touch-callout: none;
  user-select: none;
}
/* ============================================================
   OQS USER PAGES - Trang người dùng, lịch sử, bộ sưu tập, yêu thích
   ============================================================ */

/* Back link */
.oqs-back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #475569;
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 24px;
    padding: 6px 12px;
    border-radius: 6px;
    transition: background .2s;
}
.oqs-back-link:hover { background: #f1f5f9; color: #1e293b; }

/* ---- Dashboard hero ---- */
.oqs-user-dashboard { max-width: 900px; margin: 0 auto; padding: 24px 16px 60px; }

.oqs-user-hero {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}
.oqs-avatar-img { border-radius: 50%; width: 60px; height: 60px; object-fit: cover; }
.oqs-user-avatar { flex-shrink: 0; }
.oqs-user-welcome { font-size: 24px; font-weight: 700; margin: 0 0 4px; color: #1e293b; }
.oqs-user-sub { font-size: 14px; color: #64748b; margin: 0; }

/* ---- Stats cards ---- */
.oqs-user-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 36px;
}
@media (max-width: 640px) { .oqs-user-stats { grid-template-columns: repeat(2, 1fr); } }

.oqs-user-stat-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
    overflow: hidden;
}
.oqs-user-stat-num {
    font-size: 32px;
    font-weight: 700;
    color: #1e293b;
    line-height: 1;
}
.oqs-user-stat-icon {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 22px;
    opacity: .5;
}
.oqs-user-stat-label { font-size: 13px; color: #64748b; margin-top: 4px; }

/* ---- Sections ---- */
.oqs-user-section { margin-bottom: 36px; background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; overflow: hidden; }
.oqs-user-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid #f1f5f9;
}
.oqs-user-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}
.oqs-user-bar { display: inline-block; width: 4px; height: 18px; background: #22c55e; border-radius: 2px; }
.oqs-user-see-all { font-size: 13px; color: #22c55e; text-decoration: none; font-weight: 500; }
.oqs-user-see-all:hover { text-decoration: underline; }
.oqs-user-empty-row { padding: 20px; color: #64748b; font-size: 14px; }
.oqs-user-actions-row { padding: 16px 20px; }

/* ---- Table ---- */
.oqs-user-table-wrap { overflow-x: auto; }
.oqs-user-table { width: 100%; border-collapse: collapse; }
.oqs-user-table th {
    background: #f8fafc;
    padding: 10px 16px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: #94a3b8;
    font-weight: 600;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}
.oqs-user-table td { padding: 12px 16px; border-bottom: 1px solid #f1f5f9; font-size: 14px; vertical-align: middle; }
.oqs-user-table tr:last-child td { border-bottom: none; }
.oqs-user-quiz-name { display: flex; align-items: center; gap: 10px; }
.oqs-user-quiz-thumb { width: 36px; height: 36px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.oqs-user-score-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}
.oqs-user-date { color: #64748b; }

/* ---- Favorite mini cards in dashboard ---- */
.oqs-user-fav-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 16px 20px; }
@media (max-width: 640px) { .oqs-user-fav-grid { grid-template-columns: 1fr; } }

.oqs-user-fav-card {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
    background: #fafafa;
}
.oqs-user-fav-card img { width: 100%; height: 90px; object-fit: cover; }
.oqs-user-fav-body { padding: 10px 12px; }
.oqs-user-fav-title { display: flex; align-items: flex-start; justify-content: space-between; gap: 6px; font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.oqs-user-fav-title a { color: #1e293b; text-decoration: none; }
.oqs-user-fav-title a:hover { color: #22c55e; }
.oqs-user-fav-meta { font-size: 12px; color: #94a3b8; margin-bottom: 8px; }
.oqs-user-fav-actions { display: flex; gap: 6px; }
.oqs-fav-star { flex-shrink: 0; }

/* ============================================================
   OQS USER PAGE (chung cho history, collections, favorites)
   ============================================================ */
.oqs-user-page { max-width: 900px; margin: 0 auto; padding: 24px 16px 60px; }

.oqs-user-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.oqs-user-page-title { font-size: 28px; font-weight: 700; color: #1e293b; margin: 0 0 6px; }
.oqs-user-page-sub { font-size: 14px; color: #64748b; margin: 0; }
.oqs-user-page-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.oqs-user-search-form { display: flex; }
.oqs-user-search-input {
    padding: 8px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    min-width: 200px;
    transition: border .2s;
}
.oqs-user-search-input:focus { border-color: #22c55e; }

.oqs-user-sort-select {
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    background: #fff;
    cursor: pointer;
}

/* ---- Empty state ---- */
.oqs-user-empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #64748b;
}
.oqs-user-empty-icon { font-size: 52px; margin-bottom: 16px; }
.oqs-user-empty-state h3 { font-size: 20px; font-weight: 600; color: #1e293b; margin-bottom: 8px; }
.oqs-user-empty-state p { margin-bottom: 20px; }

/* ---- History list ---- */
.oqs-history-list { display: flex; flex-direction: column; gap: 12px; }

.oqs-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    flex-wrap: wrap;
}
.oqs-history-item-left { display: flex; align-items: center; gap: 14px; flex: 1 1 200px; }
.oqs-history-item-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.oqs-history-thumb {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
}
.oqs-history-thumb-placeholder {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.oqs-history-title { font-weight: 600; font-size: 14px; color: #1e293b; margin-bottom: 4px; }
.oqs-history-date { font-size: 12px; color: #94a3b8; }

.oqs-history-score-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 3px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}
.oqs-history-qa { font-size: 13px; color: #64748b; white-space: nowrap; }

/* ---- Collections ---- */
.oqs-col-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.oqs-col-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: border-color .2s, box-shadow .2s;
}
.oqs-col-card:hover { border-color: #22c55e; box-shadow: 0 2px 12px rgba(34,197,94,.08); }
.oqs-col-card-icon { font-size: 28px; flex-shrink: 0; }
.oqs-col-card-body { flex: 1; min-width: 0; }
.oqs-col-card-name { font-weight: 600; font-size: 15px; color: #1e293b; margin-bottom: 4px; }
.oqs-col-card-desc { font-size: 12px; color: #64748b; margin-bottom: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.oqs-col-card-meta { font-size: 12px; color: #94a3b8; margin-bottom: 10px; }
.oqs-col-card-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---- Favorites grid ---- */
.oqs-fav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.oqs-fav-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    transition: box-shadow .2s;
}
.oqs-fav-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.oqs-fav-card-thumb img { width: 100%; height: 130px; object-fit: cover; display: block; }
.oqs-fav-card-body { padding: 14px; }
.oqs-fav-card-title {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
}
.oqs-fav-card-title a { color: #1e293b; text-decoration: none; flex: 1; }
.oqs-fav-card-title a:hover { color: #22c55e; }
.oqs-fav-star-btn { background: none; border: none; cursor: pointer; font-size: 18px; flex-shrink: 0; padding: 0; line-height: 1; }
.oqs-fav-card-meta { font-size: 12px; color: #94a3b8; margin-bottom: 12px; }
.oqs-fav-card-actions { display: flex; gap: 8px; padding: 0 14px 14px; }

/* ---- Modal ---- */
.oqs-modal { position: fixed; inset: 0; z-index: 99999; display: flex; align-items: center; justify-content: center; }
.oqs-modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.oqs-modal-box { position: relative; background: #fff; border-radius: 14px; width: 100%; max-width: 480px; margin: 16px; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.oqs-modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid #f1f5f9; }
.oqs-modal-header h3 { font-size: 18px; font-weight: 600; margin: 0; }
.oqs-modal-close { background: none; border: none; font-size: 18px; cursor: pointer; color: #64748b; width: 32px; height: 32px; border-radius: 6px; display: flex; align-items: center; justify-content: center; }
.oqs-modal-close:hover { background: #f1f5f9; }
.oqs-modal-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 12px; }
.oqs-modal-body label { font-size: 13px; font-weight: 500; color: #374151; }
.oqs-modal-footer { padding: 16px 24px; border-top: 1px solid #f1f5f9; display: flex; justify-content: flex-end; gap: 10px; }

/* ---- Inputs ---- */
.oqs-input {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
    transition: border .2s;
}
.oqs-input:focus { border-color: #22c55e; }
.oqs-textarea { resize: vertical; min-height: 80px; }
.oqs-required { color: #ef4444; }

/* ---- Button variants ---- */
.oqs-btn-dark {
    background: #1e293b;
    color: #fff;
    border: none;
    padding: 7px 14px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background .2s;
}
.oqs-btn-dark:hover { background: #0f172a; color: #fff; }

.oqs-btn-sm { padding: 5px 12px; font-size: 12px; }

.oqs-btn-outline {
    background: transparent;
    color: #475569;
    border: 1px solid #e2e8f0;
    padding: 7px 14px;
    border-radius: 7px;
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: border-color .2s;
}
.oqs-btn-outline:hover { border-color: #94a3b8; color: #1e293b; }

.oqs-btn-outline-sm {
    background: transparent;
    color: #475569;
    border: 1px solid #e2e8f0;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: border-color .2s;
}
.oqs-btn-outline-sm:hover { border-color: #94a3b8; }

.oqs-btn-primary-sm {
    background: #22c55e;
    color: #fff;
    border: none;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background .2s;
}
.oqs-btn-primary-sm:hover { background: #16a34a; color: #fff; }

.oqs-btn-danger-sm {
    background: #fef2f2;
    color: #ef4444;
    border: 1px solid #fecaca;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background .2s;
}
.oqs-btn-danger-sm:hover { background: #fee2e2; }

/* ---- Login required ---- */
.oqs-user-login-notice { display: flex; justify-content: center; padding: 60px 20px; }
.oqs-user-login-box { text-align: center; max-width: 360px; padding: 40px 30px; background: #fff; border: 1px solid #e2e8f0; border-radius: 16px; }
.oqs-user-login-icon { font-size: 48px; margin-bottom: 16px; }
.oqs-user-login-box h3 { font-size: 20px; margin-bottom: 8px; color: #1e293b; }
.oqs-user-login-box p { color: #64748b; margin-bottom: 20px; }

/* ---- Loading ---- */
.oqs-loading { padding: 30px; text-align: center; color: #64748b; font-size: 14px; }

/* ============================================================
   FAVORITE BUTTON trên trang đề thi
   ============================================================ */
.oqs-quiz-fav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fff;
    font-size: 14px;
    cursor: pointer;
    color: #64748b;
    transition: all .2s;
}
.oqs-quiz-fav-btn:hover,
.oqs-quiz-fav-btn.oqs-fav-active { border-color: #f59e0b; color: #f59e0b; background: #fffbeb; }


/* ============================================================
   Quiz start screen action row (Yêu thích + Lưu)
   ============================================================ */
.oqs-quiz-action-row {
    display: flex;
    gap: 10px;
    margin: 12px 0 4px;
    flex-wrap: wrap;
    justify-content: center;
}
.oqs-quiz-fav-btn,
.oqs-quiz-save-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fff;
    font-size: 14px;
    cursor: pointer;
    color: #475569;
    transition: all .2s;
    font-weight: 500;
}
.oqs-quiz-fav-btn:hover { border-color: #fbbf24; color: #d97706; background: #fffbeb; }
.oqs-quiz-fav-btn.oqs-fav-active { border-color: #fbbf24; color: #d97706; background: #fffbeb; }
.oqs-quiz-save-btn:hover { border-color: #22c55e; color: #16a34a; background: #f0fdf4; }
.oqs-quiz-save-btn.oqs-saved-active { border-color: #22c55e; color: #16a34a; background: #f0fdf4; }


/* ============================================================
   ACTION BUTTONS LAYOUT
   [ Làm đề 65% ] [ gap ] [ 🔖 ♡ ]
   Override Flatsome: body prefix + !important
   ============================================================ */

/* Primary button màu xanh lá */
body .oqs-btn-primary {
    background: #16a34a !important;
    color: #fff !important;
}
body .oqs-btn-primary:hover {
    background: #15803d !important;
    color: #fff !important;
}

/* Footer container */
body .oqs-hp-quiz-card-footer,
body .oqs-library-card-actions {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 10px 16px 16px !important;
    gap: 8px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
}

/* Nút Làm đề: 65% chiều rộng */
body .oqs-hp-btn-start,
body .oqs-library-card-actions > a.oqs-btn-primary {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex: 0 0 65% !important;
    width: 65% !important;
    min-width: unset !important;
    max-width: unset !important;
    padding: 10px 4px !important;
    margin: 0 !important;
    font-size: 14px !important;
    font-weight: 700 !important;
    border-radius: 9px !important;
    background: #16a34a !important;
    color: #fff !important;
    text-decoration: none !important;
    text-align: center !important;
    line-height: 1.4 !important;
    border: none !important;
    box-sizing: border-box !important;
    cursor: pointer !important;
}
body .oqs-hp-btn-start:hover,
body .oqs-library-card-actions > a.oqs-btn-primary:hover {
    background: #15803d !important;
    color: #fff !important;
}

/* Nhóm 2 icon */
body .oqs-hp-quiz-actions,
body .oqs-library-card-actions > .oqs-icon-group {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 6px !important;
    flex: 0 0 auto !important;
    margin: 0 !important;
}

/* Icon 🔖 và ♡ */
body .oqs-hp-ico,
body .oqs-ico-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 36px !important;
    height: 36px !important;
    min-width: 36px !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 1.5px solid #d1d5db !important;
    border-radius: 8px !important;
    background: #fff !important;
    cursor: pointer !important;
    font-size: 16px !important;
    line-height: 1 !important;
    flex-shrink: 0 !important;
    box-sizing: border-box !important;
    transition: border-color .18s, background .18s !important;
}
body .oqs-hp-ico:hover,
body .oqs-ico-btn:hover {
    border-color: #9ca3af !important;
    background: #f9fafb !important;
}
body .oqs-hp-ico.oqs-fav-active,
body .oqs-ico-btn.oqs-fav-active {
    border-color: #fbbf24 !important;
    background: #fffbeb !important;
}
body .oqs-hp-ico.oqs-saved-active,
body .oqs-ico-btn.oqs-saved-active {
    border-color: #22c55e !important;
    background: #f0fdf4 !important;
}

/* Library card layout */
body .oqs-library-card {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
}
body .oqs-library-card-body { flex: 1 !important; }
body .oqs-library-card-title { font-weight: 700 !important; font-size: 14px !important; line-height: 1.4 !important; }
body .oqs-library-card-title a { color: #1e293b !important; text-decoration: none !important; }
body .oqs-library-card-title a:hover { color: #16a34a !important; }

/* MathJax context menu */
mjx-container mjx-menu, mjx-container mjx-context-menu,
mjx-container .MJX_ContextMenu, mjx-container .MJX_Menu,
.MathJax_MenuFrame, #MathJax_MenuFrame {
    display: none !important;
    visibility: hidden !important;
}

/* Modal bộ sưu tập */
#oqs-save-modal {
    position: fixed !important;
    inset: 0 !important;
    z-index: 999998 !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 16px !important;
    box-sizing: border-box !important;
}
#oqs-save-modal[style*="flex"] { display: flex !important; }
#oqs-save-modal[style*="none"] { display: none !important; }
#oqs-save-modal-backdrop {
    position: fixed !important;
    inset: 0 !important;
    background: rgba(0,0,0,.5) !important;
    cursor: pointer !important;
}
#oqs-save-modal .oqs-modal-box {
    position: relative !important;
    z-index: 1 !important;
    width: 100% !important;
    max-width: 460px !important;
    max-height: 90vh !important;
    overflow-y: auto !important;
    background: #fff !important;
    border-radius: 14px !important;
    box-shadow: 0 20px 60px rgba(0,0,0,.25) !important;
    animation: oqsModalIn .22s ease !important;
}
@keyframes oqsModalIn {
    from { transform: translateY(-16px) scale(.97); opacity: 0; }
    to   { transform: translateY(0)     scale(1);   opacity: 1; }
}
#oqs-save-modal .oqs-modal-header {
    display: flex !important; align-items: center !important;
    justify-content: space-between !important;
    padding: 18px 22px !important; border-bottom: 1px solid #f1f5f9 !important;
    position: sticky !important; top: 0 !important; background: #fff !important;
    border-radius: 14px 14px 0 0 !important;
}
#oqs-save-modal .oqs-modal-header h3 { font-size: 17px !important; font-weight: 700 !important; margin: 0 !important; }
#oqs-save-modal .oqs-modal-close {
    width: 32px !important; height: 32px !important; border-radius: 6px !important;
    border: none !important; background: none !important; cursor: pointer !important;
    color: #64748b !important; font-size: 18px !important;
    display: flex !important; align-items: center !important; justify-content: center !important;
    margin: 0 !important; padding: 0 !important;
}
#oqs-save-modal .oqs-modal-close:hover { background: #f1f5f9 !important; }
#oqs-save-modal .oqs-modal-body { padding: 18px 22px !important; }

/* Collection picker */
.oqs-col-hint { color: #64748b; font-size: 13px; margin: 0 0 10px; }
.oqs-col-loading { padding: 24px; text-align: center; color: #94a3b8; font-size: 13px; }
.oqs-col-empty { padding: 16px; text-align: center; color: #94a3b8; font-size: 13px; line-height: 1.6; }
.oqs-col-pick-btn {
    display: flex !important; align-items: center !important; gap: 10px !important;
    width: 100% !important; padding: 11px 14px !important; margin: 0 0 7px !important;
    border: 1px solid #e2e8f0 !important; border-radius: 9px !important;
    background: #fff !important; cursor: pointer !important; text-align: left !important;
    transition: border-color .15s, background .15s !important; box-sizing: border-box !important;
}
.oqs-col-pick-btn:hover { border-color: #22c55e !important; background: #f0fdf4 !important; }
.oqs-col-pick-icon { font-size: 20px; flex-shrink: 0; }
.oqs-col-pick-name { flex: 1 !important; font-size: 14px; font-weight: 600; color: #1e293b; text-align: left; }
.oqs-col-pick-count { font-size: 12px; color: #94a3b8; white-space: nowrap; }
#oqs-toggle-create-col {
    background: none !important; border: none !important; cursor: pointer !important;
    color: #22c55e !important; font-size: 13px !important; font-weight: 600 !important;
    padding: 0 !important; margin: 0 !important;
}
#oqs-new-col-submit {
    display: block !important; width: 100% !important; margin: 8px 0 0 !important;
    background: #4f46e5 !important; color: #fff !important; border: none !important;
    padding: 11px !important; border-radius: 8px !important; font-weight: 700 !important;
    font-size: 14px !important; cursor: pointer !important; transition: background .2s !important;
}
#oqs-new-col-submit:hover { background: #3730a3 !important; }

/* Toast */
#oqs-toast {
    position: fixed !important; bottom: 24px !important; right: 24px !important;
    z-index: 999999 !important; background: #1e293b !important; color: #fff !important;
    padding: 13px 20px !important; border-radius: 10px !important; font-size: 14px !important;
    display: none; align-items: center; gap: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,.25) !important; max-width: 320px !important;
    line-height: 1.4 !important;
}
#oqs-toast.oqs-show { display: flex !important; }
#oqs-toast.oqs-toast-success { background: #16a34a !important; }
#oqs-toast.oqs-toast-error   { background: #dc2626 !important; }
#oqs-toast.oqs-toast-warn    { background: #d97706 !important; }

/* Quiz page: nút yêu thích + lưu */
body .oqs-quiz-action-row {
    display: flex !important; gap: 10px !important; margin: 12px 0 4px !important;
    flex-wrap: wrap !important; justify-content: center !important;
}
body .oqs-quiz-fav-btn,
body .oqs-quiz-save-btn {
    display: inline-flex !important; align-items: center !important; gap: 7px !important;
    padding: 8px 16px !important; border: 1px solid #e2e8f0 !important;
    border-radius: 8px !important; background: #fff !important; font-size: 14px !important;
    cursor: pointer !important; color: #475569 !important; font-weight: 500 !important;
    margin: 0 !important; transition: all .2s !important;
}
body .oqs-quiz-fav-btn:hover,
body .oqs-quiz-fav-btn.oqs-fav-active { border-color: #fbbf24 !important; color: #d97706 !important; background: #fffbeb !important; }
body .oqs-quiz-save-btn:hover,
body .oqs-quiz-save-btn.oqs-saved-active { border-color: #22c55e !important; color: #16a34a !important; background: #f0fdf4 !important; }


/* ============================================================
   FIX: oqs-hp-quiz-card dùng ngoài .oqs-hp (trang thư viện)
   Hardcode values thay vì dùng CSS variables của .oqs-hp
   ============================================================ */
.oqs-hp-quiz-card {
    background: #fff !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.07) !important;
    display: flex !important;
    flex-direction: column !important;
    transition: box-shadow 0.2s !important;
    overflow: hidden !important;
}
.oqs-hp-quiz-card:hover {
    box-shadow: 0 8px 28px rgba(0,0,0,0.11) !important;
}
.oqs-hp-quiz-card-body {
    padding: 16px !important;
    flex: 1 !important;
    display: flex !important;
    flex-direction: column !important;
}
.oqs-hp-quiz-title {
    font-weight: 700 !important;
    font-size: 0.95em !important;
    line-height: 1.45 !important;
    margin-bottom: 6px !important;
    flex: 1 !important;
    color: #0f172a !important;
}
.oqs-hp-quiz-title a { color: #0f172a !important; text-decoration: none !important; }
.oqs-hp-quiz-title a:hover { color: #16a34a !important; }
.oqs-hp-quiz-subject {
    font-size: 0.82em !important;
    color: #64748b !important;
    margin-bottom: 8px !important;
}
.oqs-hp-quiz-meta {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    flex-wrap: wrap !important;
    font-size: 0.82em !important;
    color: #64748b !important;
    margin-top: 8px !important;
}
.oqs-hp-meta-item {
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
}
.oqs-hp-meta-icon {
    font-size: 0.85em !important;
}