/* Category navigation and quiz listings. Shared surfaces, tokens and controls live in frontend-ui.css. */
.qp-catalog { padding: 24px 0 48px; }
.qp-catalog-breadcrumb { margin-bottom: 22px; }
.qp-catalog-breadcrumb .breadcrumb { font-size: 12px; --bs-breadcrumb-divider: '›'; }
.qp-catalog-breadcrumb a { color: var(--qp-ui-muted); text-decoration: none; }
.qp-catalog-breadcrumb a:hover { color: var(--qp-ui-primary); }
.qp-catalog-breadcrumb .active { color: var(--qp-ui-strong); font-weight: 600; }
.qp-catalog .qp-catalog-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 36px;
    padding: 35px 38px 30px;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    box-shadow: 0 12px 30px rgba(23, 32, 51, .045);
}
.qp-catalog-hero::before {
    content: '';
    position: absolute;
    inset: 0 0 0 45%;
    background: radial-gradient(ellipse at 100% 0, rgba(13, 110, 253, .065), transparent 75%);
    z-index: -1;
    pointer-events: none;
}
.qp-catalog-hero::after {
    content: '';
    position: absolute;
    width: 460px;
    height: 460px;
    right: -230px;
    top: -275px;
    border: 1px solid rgba(13, 110, 253, .04);
    border-radius: 50%;
    box-shadow: 0 0 0 50px rgba(13, 110, 253, .018), 0 0 0 100px rgba(13, 110, 253, .012);
    z-index: -1;
    pointer-events: none;
}
.qp-catalog-hero-heading { display: flex; align-items: flex-start; gap: 18px; }
.qp-catalog-hero-heading > div { min-width: 0; }
.qp-catalog-hero-heading > .qp-ui-symbol { width: 54px; height: 54px; margin-top: 3px; }
.qp-catalog-hero h1 { font-size: clamp(2.4375rem, 4vw, 3.25rem); font-weight: 700; line-height: 1.12; letter-spacing: -.04em; margin: 0 0 12px; overflow-wrap: anywhere; }
.qp-catalog-hero-heading .qp-ui-description { max-width: 460px; font-size: 13px; line-height: 1.75; }
.qp-catalog-badges { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; }
.qp-catalog-hero-heading .qp-ui-pill-premium { text-transform: uppercase; letter-spacing: .03em; }
.qp-catalog-metrics { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--qp-ui-border); color: var(--qp-ui-muted); font-size: 12px; }
.qp-catalog-metrics span { display: inline-flex; align-items: center; gap: 6px; }
.qp-catalog-metrics strong { color: var(--qp-ui-strong); font-weight: 650; }
.qp-catalog-access { padding: 21px; border: 1px solid #dfeafd; border-radius: 15px; background: var(--qp-ui-tint); display: flex; flex-direction: column; justify-content: center; gap: 15px; min-width: 0; }
.qp-catalog-access.qp-ui-tone-success { border-color: #d7eadf; }
.qp-catalog-access h2 { font-size: 15px; font-weight: 650; line-height: 1.5; margin: 0 0 7px; }
.qp-catalog-access h2 i { color: var(--qp-ui-accent); margin-right: 5px; }
.qp-catalog-access.qp-ui-tone-success h2 { color: var(--qp-ui-accent); }
.qp-catalog-access .qp-ui-description { font-size: 12px; line-height: 1.8; }
.qp-catalog-access-note { display: flex; align-items: flex-start; gap: 8px; color: var(--qp-ui-muted); font-size: 12px; line-height: 1.75; margin: 17px 5px 0; }
.qp-catalog-access-note i { color: var(--qp-ui-primary); flex-shrink: 0; }
.qp-catalog-section-top { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 18px; margin: 34px 0 20px; }
.qp-catalog-section-title { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; font-size: 23px; font-weight: 650; letter-spacing: -.025em; margin: 0 0 7px; }
.qp-catalog-section-title::before { content: ''; width: 4px; height: 18px; border-radius: 2px; background: var(--qp-ui-primary); flex-shrink: 0; }
.qp-catalog-section-top .qp-ui-description { font-size: 12px; }
.qp-catalog-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 19px; }
.qp-catalog-subcard, .qp-catalog-quizcard { min-width: 0; padding: 25px; display: flex; flex-direction: column; transition: border-color .18s, box-shadow .18s, transform .18s; }
.qp-catalog-subcard:hover, .qp-catalog-quizcard:hover { border-color: #b3cdf5; box-shadow: 0 9px 24px rgba(23, 32, 51, .045); transform: translateY(-2px); }
.qp-catalog-subcard .qp-ui-title-row { margin-bottom: 25px; gap: 16px; }
.qp-catalog-subcard .qp-ui-symbol { width: 50px; height: 50px; }
.qp-catalog-subidentity { flex: 1; min-width: 0; }
.qp-catalog-subcard .qp-ui-card-title { font-size: 20px; overflow-wrap: anywhere; }
.qp-catalog-subcard .qp-ui-description { margin-top: 6px; font-size: 12px; }
.qp-catalog-subarrow { color: #b4becb; font-size: 14px; }
.qp-catalog-subfooter { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: auto; padding-top: 20px; border-top: 1px solid var(--qp-ui-border); }
.qp-catalog-substats { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; font-size: 12px; color: var(--qp-ui-muted); }
.qp-catalog-substats strong { color: var(--qp-ui-strong); font-weight: 600; }
.qp-catalog-text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--qp-ui-primary); font-size: 12px; font-weight: 600; text-decoration: none; min-height: 42px; }
.qp-catalog-text-link:hover { text-decoration: underline; }
.qp-catalog-subcard.is-empty { background: #fbfcff; }
.qp-catalog-subcard.is-empty .qp-ui-symbol { background: #f0f3f8; color: #8997aa; }
.qp-catalog-subcard.is-empty .qp-ui-card-title { color: var(--qp-ui-secondary); }
.qp-catalog-subcard.is-empty .qp-catalog-subarrow { color: #ced4dc; }
.qp-catalog-quiz-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 23px; }
.qp-catalog-quiz-top .qp-catalog-badges { justify-content: flex-end; }
.qp-catalog-quiz-number { display: inline-flex; align-items: center; gap: 9px; color: var(--qp-ui-muted); font-size: 11px; letter-spacing: .07em; text-transform: uppercase; white-space: nowrap; }
.qp-catalog-quiz-number .qp-ui-symbol { width: 36px; height: 36px; border-radius: 10px; font-size: 18px; }
.qp-catalog .qp-catalog-quiz-title { font-size: 20px; font-weight: 650; line-height: 1.4; letter-spacing: -.025em; overflow-wrap: anywhere; margin: 0 0 12px; }
.qp-catalog-quiz-description { font-size: 12px; margin-bottom: 20px; overflow-wrap: anywhere; }
.qp-catalog-quiz-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 15px 22px; color: var(--qp-ui-secondary); font-size: 12px; margin-top: auto; padding-top: 12px; }
.qp-catalog-quiz-meta span { display: inline-flex; align-items: center; gap: 6px; }
.qp-catalog-mode { font-size: 12px; margin-top: 10px; line-height: 1.6; }
.qp-catalog-mode i { margin-right: 4px; }
.qp-catalog-quiz-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 21px; padding-top: 19px; border-top: 1px solid var(--qp-ui-border); }
.qp-catalog-attempt { font-size: 11px; color: var(--qp-ui-muted); }
.qp-catalog-view-toggle { display: flex; gap: 4px; padding: 4px; background: #fff; border: 1px solid var(--qp-ui-border); border-radius: 12px; }
.qp-catalog .qp-catalog-view-toggle .btn { font-size: 12px; padding: 7px 13px; min-height: 36px; border-color: transparent; }
.qp-catalog-view-toggle .btn:disabled { opacity: 1; }
.qp-catalog-view-toggle .btn-outline-secondary { color: var(--qp-ui-muted); }
.qp-catalog-view-toggle .btn-outline-secondary:hover { color: var(--qp-ui-primary); background: var(--qp-ui-primary-soft); }
.qp-catalog .qp-catalog-table-wrap { overflow: hidden; }
.qp-catalog-table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 12px; }
.qp-catalog-table th { padding: 16px 18px; background: #f5f8fd; border-bottom: 1px solid var(--qp-ui-border); color: var(--qp-ui-muted); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.qp-catalog-table th:first-child { width: 38%; }
.qp-catalog-table th:nth-child(2) { width: 10%; }
.qp-catalog-table th:nth-child(3) { width: 20%; }
.qp-catalog-table th:nth-child(4) { width: 14%; }
.qp-catalog-table th:last-child { width: 18%; text-align: right; }
.qp-catalog-table td { padding: 24px 18px; vertical-align: middle; border-bottom: 1px solid var(--qp-ui-border); color: var(--qp-ui-secondary); overflow-wrap: anywhere; }
.qp-catalog-table tbody tr:last-child td { border-bottom: 0; }
.qp-catalog-table tbody tr:hover { background: #fbfdff; }
.qp-catalog .qp-catalog-table .qp-catalog-quiz-title { font-size: 15px; line-height: 1.5; }
.qp-catalog-table .qp-catalog-table-action { text-align: right; }
.qp-catalog .qp-catalog-table .btn { font-size: 12px; padding: 8px 12px; }
.qp-catalog-cell-label { display: none; }
.qp-catalog-empty { display: flex; align-items: center; flex-direction: column; gap: 18px; text-align: center; padding: 40px 24px; margin-top: 30px; }

.qp-catalog .qp-catalog-quizcard.qp-ui-tone-muted:hover {
    border-color: var(--qp-ui-border);
    box-shadow: 0 3px 12px rgba(15, 23, 42, .035);
    transform: none;
}
.qp-catalog .qp-catalog-table tr.qp-ui-tone-muted,
.qp-catalog .qp-catalog-table tr.qp-ui-tone-muted:hover {
    background: var(--qp-ui-surface);
}
/* Both category and subcategory quiz listings share this desktop type scale. */
@media (min-width: 992px) {
    .qp-catalog { --qp-ui-font-caption: var(--qp-ui-font-label); }
    .qp-catalog-breadcrumb .breadcrumb,
    .qp-catalog-access .qp-ui-description,
    .qp-catalog-access-note,
    .qp-catalog-section-top .qp-ui-description,
    .qp-catalog-subcard .qp-ui-description,
    .qp-catalog-metrics,
    .qp-catalog-substats,
    .qp-catalog-text-link,
    .qp-catalog-quiz-description,
    .qp-catalog-quiz-meta,
    .qp-catalog-mode,
    .qp-catalog-table,
    .qp-catalog .qp-catalog-view-toggle .btn,
    .qp-catalog .qp-catalog-table .btn { font-size: var(--qp-ui-font-body); }
    .qp-catalog-hero-heading .qp-ui-description { font-size: 16px; }
    .qp-catalog-metrics strong,
    .qp-catalog-substats strong { font-size: 18px; }
    .qp-catalog-metrics i { font-size: 16px; }
    .qp-catalog-section-title { font-size: 24px; }
    .qp-catalog-quiz-number { font-size: var(--qp-ui-font-label); }
    .qp-catalog-attempt,
    .qp-catalog-table th { font-size: 13px; }
    .qp-catalog .qp-catalog-table .qp-catalog-quiz-title { font-size: 16px; }
}
@media (max-width: 991.98px) {
    .qp-catalog .qp-catalog-hero { grid-template-columns: minmax(0, 1fr) 265px; padding: 30px; gap: 25px; }
    .qp-catalog-hero-heading { gap: 14px; }
    .qp-catalog-hero-heading > .qp-ui-symbol { width: 46px; height: 46px; }
    .qp-catalog-subcard, .qp-catalog-quizcard { padding: 22px; }
    .qp-catalog-table th, .qp-catalog-table td { padding-left: 10px; padding-right: 10px; }
    .qp-catalog-table th { font-size: 10px; }
    .qp-catalog-table th:first-child { width: 36%; }
    .qp-catalog-table th:nth-child(2) { width: 12%; }
    .qp-catalog .qp-catalog-table .btn { padding: 8px; font-size: 11px; }
}
@media (max-width: 767.98px) {
    .qp-catalog .qp-catalog-hero { grid-template-columns: 1fr; gap: 22px; }
    .qp-catalog-access { flex-direction: row; align-items: center; flex-wrap: wrap; justify-content: space-between; }
    .qp-catalog-access > div { flex: 1; min-width: 180px; }
    .qp-catalog-grid { grid-template-columns: 1fr; }
    .qp-catalog .qp-catalog-table-wrap { background: transparent; border: 0; box-shadow: none; overflow: visible; }
    .qp-catalog-table, .qp-catalog-table tbody { display: block; }
    .qp-catalog-table thead { display: none; }
    .qp-catalog-table tr { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 17px; padding: 21px; margin-bottom: 14px; background: #fff; border: 1px solid var(--qp-ui-border); border-radius: 18px; }
    .qp-catalog-table td { display: block; border: 0; padding: 0; font-size: 12px; }
    .qp-catalog-table-title { grid-column: 1 / -1; }
    .qp-catalog .qp-catalog-table .qp-catalog-quiz-title { font-size: 18px; }
    .qp-catalog-table-attempt { grid-row: 3; grid-column: 1; align-self: center; font-size: 11px; }
    .qp-catalog-table-action { grid-row: 3; grid-column: 2; }
    .qp-catalog-table-action .btn { width: 100%; }
    .qp-catalog-cell-label { display: block; color: var(--qp-ui-muted); font-size: 11px; margin-bottom: 5px; }
}
@media (max-width: 575.98px) {
    .qp-catalog { padding: 20px 0 32px; }
    .qp-catalog > .container { padding-left: 18px; padding-right: 18px; }
    .qp-catalog-breadcrumb { margin-bottom: 18px; }
    .qp-catalog-breadcrumb .breadcrumb { font-size: 11px; }
    .qp-catalog .qp-catalog-hero { padding: 25px 21px 20px; gap: 18px; }
    .qp-catalog-hero-heading > .qp-ui-symbol { display: none; }
    .qp-catalog-hero h1 { margin-bottom: 9px; }
    .qp-catalog-hero-heading .qp-ui-description { font-size: 12px; }
    .qp-catalog-metrics { gap: 14px; margin-top: 19px; padding-top: 17px; font-size: 11px; }
    .qp-catalog-access { flex-direction: column; align-items: stretch; padding: 16px; gap: 13px; }
    .qp-catalog-access > div { min-width: 0; flex: none; }
    .qp-catalog-access h2 { font-size: 14px; }
    .qp-catalog-access .qp-ui-description { font-size: 12px; }
    .qp-catalog-access-note { font-size: 11px; margin: 14px 0 0; }
    .qp-catalog-section-top { margin: 28px 0 17px; gap: 12px; }
    .qp-catalog-section-title { font-size: 20px; gap: 8px; }
    .qp-catalog-section-top .qp-ui-description { font-size: 12px; }
    .qp-catalog-subcard, .qp-catalog-quizcard { padding: 23px 21px; }
    .qp-catalog-subcard .qp-ui-title-row { gap: 13px; margin-bottom: 22px; }
    .qp-catalog-subcard .qp-ui-symbol { width: 45px; height: 45px; }
    .qp-catalog-subcard .qp-ui-card-title { font-size: 19px; }
    .qp-catalog-substats { font-size: 11px; gap: 12px; }
    .qp-catalog-subfooter { padding-top: 18px; gap: 8px; }
    .qp-catalog-text-link { font-size: 11px; }
    .qp-catalog-grid { gap: 14px; }
    .qp-catalog-quiz-top { margin-bottom: 20px; }
    .qp-catalog-quiz-meta { font-size: 12px; gap: 13px; }
    .qp-catalog-quiz-footer { margin-top: 20px; padding-top: 17px; }
    .qp-catalog .qp-catalog-quiz-footer .btn { font-size: 12px; padding: 9px 12px; }
}
@media (pointer: coarse) {
    .qp-catalog .qp-catalog-view-toggle .btn { min-height: 44px; }
}
@media (prefers-reduced-motion: reduce) {
    .qp-catalog-subcard, .qp-catalog-quizcard { transition: none; }
    .qp-catalog-subcard:hover, .qp-catalog-quizcard:hover { transform: none; }
}