/* Quiz player styles. Font, outer width and page background belong to the host. */
.qz {
    --qz-accent: #2f5f98;
    --qz-accent-ink: #ffffff;
    --qz-ink: #1f2328;
    --qz-muted: #5c6670;
    --qz-line: #d6dbe0;
    --qz-surface: #ffffff;
    --qz-soft: #f3f5f7;
    --qz-right: #1d7a46;
    --qz-right-soft: #e6f4ec;
    --qz-wrong: #b42318;
    --qz-wrong-soft: #fdecea;
    --qz-partial: #9a6700;
    --qz-partial-soft: #fff4d6;
    --qz-radius: 10px;
    color: var(--qz-ink);
    font-family: inherit;
    line-height: 1.5;
}

.qz *, .qz *::before, .qz *::after { box-sizing: border-box; }

.qz-card {
    background: var(--qz-surface);
    border: 1px solid var(--qz-line);
    border-radius: var(--qz-radius);
    padding: 28px;
}
@media (max-width: 560px) { .qz-card { padding: 18px 16px; } }

.qz-title { font-size: 1.5rem; line-height: 1.25; margin: 0 0 12px; outline: none; }
.qz-meta { color: var(--qz-muted); font-size: 0.95rem; margin: 8px 0; }
.qz-note { color: var(--qz-muted); font-style: italic; }
.qz-rich > :first-child { margin-top: 0; }
.qz-rich > :last-child { margin-bottom: 0; }
.qz-rich img { max-width: 100%; height: auto; border-radius: 6px; }

/* Header */
.qz-head { margin-bottom: 20px; }
.qz-crumbs { display: flex; flex-wrap: wrap; gap: 4px 12px; color: var(--qz-muted); font-size: 0.875rem; margin-bottom: 8px; }
.qz-sec-title { font-weight: 600; color: var(--qz-ink); }
.qz-progress { height: 6px; background: var(--qz-soft); border-radius: 3px; overflow: hidden; }
.qz-progress > span { display: block; height: 100%; background: var(--qz-accent); transition: width 0.25s ease; }

/* Questions */
.qz-questions { display: flex; flex-direction: column; gap: 32px; }
.qz-question + .qz-question { border-top: 1px solid var(--qz-line); padding-top: 28px; }
.qz-qnum { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--qz-muted); margin: 0 0 8px; outline: none; }
.qz-prompt { font-size: 1.1rem; margin-bottom: 6px; }
.qz-hint { color: var(--qz-muted); font-size: 0.875rem; margin: 0 0 12px; }

.qz-choices { display: flex; flex-direction: column; gap: 10px; }
.qz-choice {
    position: relative;
    display: flex; align-items: flex-start; gap: 12px;
    padding: 12px 14px;
    border: 1.5px solid var(--qz-line);
    border-radius: 8px;
    background: var(--qz-surface);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}
.qz-choice:hover { border-color: var(--qz-accent); }
.qz-choice input { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; }
.qz-choice:focus-within { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 2px; }
.qz-letter {
    flex: none; width: 28px; height: 28px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1.5px solid var(--qz-line); font-weight: 600; font-size: 0.85rem; color: var(--qz-muted);
}
input[type="checkbox"] + .qz-letter { border-radius: 6px; }
.qz-choice-text { flex: 1; padding-top: 2px; }
.qz-choice.is-selected { border-color: var(--qz-accent); background: color-mix(in srgb, var(--qz-accent) 7%, var(--qz-surface)); }
.qz-choice.is-selected .qz-letter { background: var(--qz-accent); border-color: var(--qz-accent); color: var(--qz-accent-ink); }
.qz-choice:has(input:disabled) { cursor: default; }
.qz-choice:has(input:disabled):hover { border-color: var(--qz-line); }
.qz-choice.is-right, .qz-choice.is-right:hover { border-color: var(--qz-right); background: var(--qz-right-soft); }
.qz-choice.is-right .qz-letter { background: var(--qz-right); border-color: var(--qz-right); }
.qz-choice.is-wrong, .qz-choice.is-wrong:hover { border-color: var(--qz-wrong); background: var(--qz-wrong-soft); }
.qz-choice.is-wrong .qz-letter { background: var(--qz-wrong); border-color: var(--qz-wrong); }
.qz-choice.is-answer:not(.is-selected) { border-style: dashed; border-color: var(--qz-right); }
.qz-mark { flex: none; align-self: center; font-size: 0.8rem; font-weight: 600; }
.is-right .qz-mark, .is-answer .qz-mark { color: var(--qz-right); }
.is-wrong .qz-mark { color: var(--qz-wrong); }

.qz-q-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.qz-q-actions:empty { display: none; }

.qz-feedback:empty { display: none; }
.qz-feedback { margin-top: 14px; padding: 14px 16px; border-radius: 8px; border-left: 4px solid var(--qz-line); background: var(--qz-soft); outline: none; }
.qz-feedback.is-correct { border-color: var(--qz-right); background: var(--qz-right-soft); }
.qz-feedback.is-incorrect { border-color: var(--qz-wrong); background: var(--qz-wrong-soft); }
.qz-feedback.is-partial { border-color: var(--qz-partial); background: var(--qz-partial-soft); }
.qz-fb-title { font-weight: 700; margin: 0 0 4px; }
.qz-fb-tries { font-weight: 400; color: var(--qz-muted); }
.qz-choice-fb { margin-top: 6px; }

/* Buttons */
.qz-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 24px; }
.qz-spacer { flex: 1; }
.qz-btn {
    font: inherit; font-weight: 600; font-size: 0.95rem;
    padding: 10px 18px; border-radius: 8px;
    border: 1.5px solid var(--qz-accent); background: var(--qz-surface); color: var(--qz-accent);
    cursor: pointer; min-height: 44px;
}
.qz-btn:hover:not(:disabled) { background: color-mix(in srgb, var(--qz-accent) 8%, var(--qz-surface)); }
.qz-btn:focus-visible { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 2px; }
.qz-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.qz-primary { background: var(--qz-accent); color: var(--qz-accent-ink); }
.qz-primary:hover:not(:disabled) { background: color-mix(in srgb, var(--qz-accent) 85%, #000); }
.qz-ghost { border-color: transparent; }
.qz-reset { font-weight: 400; font-size: 0.875rem; color: var(--qz-muted); }

.qz-confirm { margin-top: 24px; padding: 14px 16px; border-radius: 8px; background: var(--qz-partial-soft); border-left: 4px solid var(--qz-partial); }
.qz-confirm p { margin: 0; }
.qz-confirm .qz-actions { margin-top: 12px; }

/* Results */
.qz-score { display: flex; align-items: baseline; gap: 14px; margin: 8px 0 4px; }
.qz-score-pct { font-size: 3rem; font-weight: 700; line-height: 1; }
.qz-score-status { font-weight: 700; padding: 4px 10px; border-radius: 999px; font-size: 0.9rem; }
.is-pass .qz-score-status { background: var(--qz-right-soft); color: var(--qz-right); }
.is-fail .qz-score-status { background: var(--qz-wrong-soft); color: var(--qz-wrong); }
.qz-breakdown { list-style: none; padding: 0; margin: 16px 0; display: flex; flex-direction: column; gap: 8px; }
.qz-breakdown li { display: grid; grid-template-columns: minmax(0, 1fr) minmax(80px, 2fr) 3.5em; gap: 12px; align-items: center; font-size: 0.95rem; }
.qz-bar { height: 8px; background: var(--qz-soft); border-radius: 4px; overflow: hidden; }
.qz-bar > span { display: block; height: 100%; background: var(--qz-accent); }
.qz-bar-pct { text-align: right; color: var(--qz-muted); }

.qz-review { margin: 24px 0 0; padding-left: 1.4em; display: flex; flex-direction: column; gap: 16px; }
.qz-review-item { padding: 12px 14px; border-radius: 8px; background: var(--qz-soft); border-left: 4px solid var(--qz-line); }
.qz-review-item p { margin: 6px 0 0; }
.qz-review-item.is-correct { border-color: var(--qz-right); }
.qz-review-item.is-incorrect, .qz-review-item.is-revealed { border-color: var(--qz-wrong); }
.qz-review-item.is-partial { border-color: var(--qz-partial); }
.qz-review-result { font-weight: 600; }
.qz-review-item img { max-height: 140px; width: auto; }

/* Status / errors */
.qz-banner { margin-bottom: 12px; padding: 10px 14px; border-radius: 8px; font-size: 0.9rem; background: var(--qz-soft); border-left: 4px solid var(--qz-accent); }
.qz-banner.is-error { background: var(--qz-wrong-soft); border-color: var(--qz-wrong); }
.qz-banner ul { margin: 6px 0 0; padding-left: 1.2em; }

@media (prefers-reduced-motion: reduce) { .qz * { transition: none !important; } }

/* Fill in the blanks */
.qz-blanks { font-size: 1.05rem; line-height: 2.4; }
.qz-blank-wrap { display: inline-flex; align-items: baseline; gap: 6px; vertical-align: baseline; }
.qz-blank {
    font: inherit; font-size: 1rem; line-height: 1.3;
    padding: 4px 8px; min-height: 36px; min-width: 6ch;
    border: 1.5px solid var(--qz-line); border-bottom: 2px solid var(--qz-muted); border-radius: 6px;
    background: var(--qz-surface); color: var(--qz-ink);
}
.qz-blank:focus { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 1px; border-color: var(--qz-accent); }
.qz-blank:disabled { opacity: 1; color: var(--qz-ink); background: var(--qz-soft); }
.qz-blank-select { padding-right: 4px; }
.qz-blank-wrap.is-right .qz-blank { border-color: var(--qz-right); background: var(--qz-right-soft); }
.qz-blank-wrap.is-wrong .qz-blank { border-color: var(--qz-wrong); background: var(--qz-wrong-soft); }
.qz-blank-answer { font-weight: 600; font-size: 0.95rem; line-height: 1.3; color: var(--qz-right); background: var(--qz-right-soft); border: 1px dashed var(--qz-right); border-radius: 6px; padding: 3px 8px; }
.qz-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* Sort the list */
.qz-sort { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.qz-sort-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 8px 8px 4px; border: 1.5px solid var(--qz-line); border-radius: 8px; background: var(--qz-surface);
}
.qz-sort-item.is-dragging { border-color: var(--qz-accent); box-shadow: 0 6px 18px rgba(20, 30, 45, 0.18); position: relative; z-index: 2; }
.qz-sort-item.is-right { border-color: var(--qz-right); background: var(--qz-right-soft); }
.qz-sort-item.is-wrong { border-color: var(--qz-wrong); background: var(--qz-wrong-soft); }
.qz-sort-handle {
    flex: none; width: 28px; height: 40px; cursor: grab; touch-action: none; border-radius: 6px;
    display: inline-flex; align-items: center; justify-content: center; opacity: 0.65;
}
.qz-sort-handle::before {
    content: ''; width: 12px; height: 20px;
    background-image: radial-gradient(circle, var(--qz-muted) 1.6px, transparent 1.9px);
    background-size: 6px 6.6px;
}
.qz-sort-handle:hover { opacity: 1; background: var(--qz-soft); }
.qz-sort-item.is-dragging .qz-sort-handle { cursor: grabbing; }
.qz-sort-handle.is-off { visibility: hidden; }
.qz-sort-pos { flex: none; width: 26px; height: 26px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: 700; color: var(--qz-muted); border: 1.5px solid var(--qz-line); }
.qz-sort-text { flex: 1; min-width: 0; }
.qz-sort-answer { flex: none; font-size: 0.8rem; font-weight: 600; color: var(--qz-right); background: var(--qz-surface); border: 1px dashed var(--qz-right); border-radius: 999px; padding: 2px 8px; }
.qz-sort-btns { flex: none; display: flex; gap: 4px; }
.qz-sort-btn {
    width: 36px; height: 36px; border-radius: 6px; border: 1.5px solid var(--qz-line); background: var(--qz-surface); cursor: pointer;
    position: relative; padding: 0;
}
.qz-sort-btn::before {
    content: ''; position: absolute; left: 50%; top: 50%; width: 9px; height: 9px;
    border-left: 2.5px solid var(--qz-ink); border-top: 2.5px solid var(--qz-ink);
    transform: translate(-50%, -25%) rotate(45deg);
}
.qz-sort-btn.is-down::before { transform: translate(-50%, -75%) rotate(225deg); }
.qz-sort-btn:hover:not(:disabled) { border-color: var(--qz-accent); }
.qz-sort-btn:focus-visible { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 1px; }
.qz-sort-btn:disabled { opacity: 0.3; cursor: default; }
@media (max-width: 480px) { .qz-sort-pos { display: none; } }

/* Match and categorise board */
.qz-board { display: flex; flex-direction: column; gap: 14px; }
.qz-pool { border: 2px dashed var(--qz-line); border-radius: 10px; padding: 10px 12px 12px; background: var(--qz-soft); }
.qz-pool-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--qz-muted); margin-bottom: 8px; }
.qz-pool-cards, .qz-bin-body { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.qz-pool-empty { color: var(--qz-muted); font-size: 0.9rem; font-style: italic; padding: 6px 0; }
.qz-cardi-wrap { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 3px; max-width: 100%; }
.qz-cardi {
    font: inherit; font-size: 0.95rem; text-align: left; line-height: 1.35;
    padding: 9px 13px; min-height: 42px; max-width: 100%;
    border: 1.5px solid var(--qz-line-strong, #b9c1ca); border-radius: 8px; background: var(--qz-surface); color: var(--qz-ink);
    box-shadow: 0 1px 2px rgba(20, 30, 45, 0.08); cursor: grab; touch-action: manipulation;
}
.qz-cardi img { max-height: 90px; width: auto; display: block; }
.qz-cardi:hover:not(:disabled) { border-color: var(--qz-accent); }
.qz-cardi:focus-visible { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 1px; }
.qz-cardi.is-selected { border-color: var(--qz-accent); background: color-mix(in srgb, var(--qz-accent) 10%, var(--qz-surface)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--qz-accent) 25%, transparent); }
.qz-cardi.is-dragging { opacity: 0.35; }
.qz-cardi:disabled { cursor: default; box-shadow: none; }
.qz-cardi.is-right { border-color: var(--qz-right); background: var(--qz-right-soft); }
.qz-cardi.is-wrong { border-color: var(--qz-wrong); background: var(--qz-wrong-soft); }
.qz-ghost-card { position: fixed; z-index: 1000; pointer-events: none; opacity: 0.92; box-shadow: 0 10px 28px rgba(20, 30, 45, 0.25); cursor: grabbing; }
.qz-cardi-note { font-size: 0.8rem; font-weight: 600; color: var(--qz-right); }
.qz-drop {
    font: inherit; font-size: 0.85rem; font-weight: 600; color: var(--qz-accent);
    padding: 6px 12px; min-height: 36px; border-radius: 8px; border: 1.5px dashed var(--qz-accent); background: var(--qz-surface); cursor: pointer;
}
.qz-drop:hover { background: color-mix(in srgb, var(--qz-accent) 8%, var(--qz-surface)); }
.qz-drop:focus-visible { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 1px; }
.qz-pool > .qz-drop { margin-top: 10px; }
[data-drop].is-over { outline: 3px solid color-mix(in srgb, var(--qz-accent) 45%, transparent); outline-offset: 2px; background: color-mix(in srgb, var(--qz-accent) 6%, var(--qz-surface)); }

.qz-targets { display: flex; flex-direction: column; gap: 10px; }
.qz-match-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 12px; align-items: center; }
@media (max-width: 520px) { .qz-match-row { grid-template-columns: 1fr; gap: 6px; } }
.qz-match-label { font-weight: 600; }
.qz-slot { min-height: 52px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 5px; border: 2px dashed var(--qz-line); border-radius: 10px; }
.qz-slot.is-filled { border-style: solid; border-color: transparent; background: var(--qz-soft); }
.qz-slot-empty { flex: 1; }

.qz-board-bins .qz-targets { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.qz-bin { border: 2px solid var(--qz-line); border-radius: 10px; background: var(--qz-surface); display: flex; flex-direction: column; min-height: 140px; }
.qz-bin-head { padding: 8px 12px; font-weight: 700; border-bottom: 1px solid var(--qz-line); background: var(--qz-soft); border-radius: 8px 8px 0 0; }
.qz-bin-body { padding: 10px; flex: 1; align-content: flex-start; }

/* Range selection */
.qz-range { --thumb: 24px; padding: 4px 2px 2px; }
.qz-range-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.qz-range-value { font-size: 1.6rem; font-weight: 700; color: var(--qz-muted); font-variant-numeric: tabular-nums; }
.qz-range.is-touched .qz-range-value { color: var(--qz-ink); }
.qz-range.is-correct .qz-range-value { color: var(--qz-right); }
.qz-range.is-incorrect .qz-range-value { color: var(--qz-wrong); }
.qz-range.is-partial .qz-range-value { color: var(--qz-partial); }
.qz-range-boxwrap { display: inline-flex; align-items: center; gap: 6px; }
.qz-range-box { font: inherit; width: 8.5em; padding: 6px 8px; min-height: 38px; border: 1.5px solid var(--qz-line); border-radius: 6px; background: var(--qz-surface); color: var(--qz-ink); }
.qz-range-box:focus { outline: 3px solid color-mix(in srgb, var(--qz-accent) 40%, transparent); outline-offset: 1px; border-color: var(--qz-accent); }
.qz-range-box:disabled { background: var(--qz-soft); }
.qz-range-unit { color: var(--qz-muted); }
.qz-range-rail { position: relative; height: 36px; display: flex; align-items: center; }
.qz-range-band {
    position: absolute; top: 50%; height: 14px; transform: translateY(-50%); border-radius: 7px; z-index: 0;
    left: calc(var(--thumb) / 2 + (100% - var(--thumb)) * var(--a) / 100);
    width: max(6px, calc((100% - var(--thumb)) * (var(--b) - var(--a)) / 100));
    background: color-mix(in srgb, var(--qz-right) 55%, transparent); outline: 2px solid var(--qz-right);
}
.qz-range-band.is-tolerance { background: color-mix(in srgb, var(--qz-partial) 22%, transparent); outline: 1px dashed var(--qz-partial); height: 10px; }
.qz-range-input { -webkit-appearance: none; appearance: none; position: relative; z-index: 1; width: 100%; height: 36px; margin: 0; background: transparent; cursor: pointer; }
.qz-range-input:disabled { cursor: default; }
.qz-range-input::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: color-mix(in srgb, var(--qz-muted) 35%, transparent); }
.qz-range-input::-moz-range-track { height: 6px; border-radius: 3px; background: color-mix(in srgb, var(--qz-muted) 35%, transparent); }
.qz-range-input::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: var(--thumb); height: var(--thumb); margin-top: calc((6px - var(--thumb)) / 2);
    border-radius: 50%; background: var(--qz-surface); border: 3px solid var(--qz-accent); box-shadow: 0 1px 4px rgba(20, 30, 45, 0.3);
}
.qz-range-input::-moz-range-thumb { width: calc(var(--thumb) - 6px); height: calc(var(--thumb) - 6px); border-radius: 50%; background: var(--qz-surface); border: 3px solid var(--qz-accent); }
.qz-range:not(.is-touched) .qz-range-input::-webkit-slider-thumb { border-color: var(--qz-muted); }
.qz-range.is-correct .qz-range-input::-webkit-slider-thumb { border-color: var(--qz-right); }
.qz-range.is-incorrect .qz-range-input::-webkit-slider-thumb { border-color: var(--qz-wrong); }
.qz-range.is-partial .qz-range-input::-webkit-slider-thumb { border-color: var(--qz-partial); }
.qz-range-input:focus-visible { outline: none; }
.qz-range-input:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px color-mix(in srgb, var(--qz-accent) 35%, transparent); }
.qz-range-input:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 4px color-mix(in srgb, var(--qz-accent) 35%, transparent); }
.qz-range-ends { display: flex; justify-content: space-between; gap: 12px; font-size: 0.85rem; color: var(--qz-muted); margin-top: 2px; }
.qz-range-answer { margin: 10px 0 0; font-weight: 600; color: var(--qz-right); }