/* ==========================================================================
   CSIP12 Quiz (Phase 3E) — focused quiz mode, segmented progress, option
   states, feedback, Quiz Complete, review. Used by /quiz/{slug} (chapter
   quiz) and /quiz (build-your-own quiz). Tokens come from csip-ui.css.
   ========================================================================== */

:root {
    --q-select-bg: #F3F8F6;
    --q-wrong-ink: #7A2A0F;
    --q-wrong-body: #3D2419;
    --q-subdued: #B3AA98;
}
html.dark {
    --q-select-bg: rgba(79, 170, 150, 0.08);
    --q-wrong-ink: #F0A487;
    --q-wrong-body: #ECD9D0;
    --q-subdued: #5E6A7D;
}

.csip-sr-only {
    position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* style.css forces Space Grotesk on every h1–h6 with !important; the design's headings are Lora. */
.csip-quizhub__title, .csip-quizhub__guest-title, .csip-setup__h, .csip-review-head__title,
.csip-quiz__empty-title, .csip-rec__title { font-family: var(--f-serif) !important; letter-spacing: 0; }

/* ---------- Focus mode: no global navigation while a quiz is running ---------- */
body:has(.csip-focus-main) .csip-topbar,
body:has(.csip-focus-main) .csip-drawer,
body:has(.csip-focus-main) .csip-backdrop,
body:has(.csip-focus-main) .csip-bottomnav,
body:has(.csip-focus-main) .csip-footer,
body.csip-focus .csip-topbar,
body.csip-focus .csip-drawer,
body.csip-focus .csip-backdrop,
body.csip-focus .csip-bottomnav,
body.csip-focus .csip-footer { display: none !important; }
body.csip-focus #main-content { padding-top: 0 !important; }

/* ---------- Page ---------- */
.csip-quiz {
    flex: 1 1 auto;
    min-width: 0;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--c-paper);
    color: var(--c-ink);
    font-family: var(--f-sans);
    padding-bottom: 48px;
}
.csip-quiz *, .csip-quiz *::before, .csip-quiz *::after { box-sizing: border-box; }

/* ---------- Focus bar ---------- */
.csip-quiz__bar {
    position: sticky; top: 0; z-index: 20;
    height: 56px;
    display: grid; grid-template-columns: minmax(80px, 1fr) auto minmax(80px, 1fr); align-items: center; gap: 12px;
    padding: 0 40px;
    background: var(--c-bar-bg);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--c-rule);
}
.csip-quiz__exit {
    justify-self: start;
    display: inline-flex; align-items: center; gap: 7px;
    height: 36px; padding: 0 10px; margin-left: -10px; border-radius: var(--r-sm);
    font-size: 12.5px; font-weight: 700; color: var(--c-ink-2); text-decoration: none;
    background: none; border: 0; cursor: pointer; font-family: inherit;
}
.csip-quiz__exit:hover { background: var(--c-band); color: var(--c-ink); }
.csip-quiz__exit i { font-size: 14px; }
.csip-quiz__title {
    min-width: 0; text-align: center;
    font-family: var(--f-serif); font-size: 15px; font-weight: 600; color: var(--c-ink);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.csip-quiz__tools { justify-self: end; display: flex; align-items: center; gap: 14px; }
.csip-quiz__xp, .csip-quiz__timer {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 12.5px; font-weight: 700; color: var(--c-amber-text); font-variant-numeric: tabular-nums;
}
.csip-quiz__xp i, .csip-quiz__timer i { color: var(--c-amber); font-size: 12px; }
.csip-quiz__xp[hidden], .csip-quiz__timer[hidden] { display: none; }
.csip-quiz__timer.is-low { color: var(--c-rust); }
.csip-quiz__timer.is-low i { color: var(--c-rust); }

.csip-quiz__crumbs { max-width: 680px; margin: 0 auto; padding: 14px 40px 0; }
.csip-quiz__crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 0; font-size: 11.5px; color: var(--c-ink-3); }
.csip-quiz__crumbs li { display: inline-flex; align-items: center; min-width: 0; }
.csip-quiz__crumbs li + li::before { content: '›'; margin: 0 7px; opacity: .7; }
.csip-quiz__crumbs a { color: inherit; text-decoration: none; }
.csip-quiz__crumbs a:hover { color: var(--c-teal); }
.csip-quiz__crumbs [aria-current] { color: var(--c-ink-2); font-weight: 600; }

/* ---------- Segmented progress ---------- */
.csip-quiz__progress { max-width: 680px; margin: 0 auto; padding: 14px 40px 0; }
.csip-quiz__progress[hidden] { display: none; }
.csip-quiz__progress-row { display: flex; justify-content: space-between; gap: 12px; font-size: 11.5px; color: var(--c-ink-3); margin-bottom: 8px; }
.csip-quiz__progress-row strong { color: var(--c-ink); font-weight: 700; }
.csip-segs { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.csip-seg {
    flex: 1 1 0; min-width: 0; height: 7px; border-radius: 3px;
    background: var(--c-surface); border: 1px solid var(--c-rule-2);
}
.csip-seg.is-correct { background: var(--c-teal); border-color: var(--c-teal); }
.csip-seg.is-wrong { background: var(--c-rust); border-color: var(--c-rust); }
.csip-seg.is-current { border: 2px solid var(--c-teal); }
.csip-segs--dense { gap: 2px; }
.csip-segs__legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 8px; font-size: 10.5px; color: var(--c-ink-2); }
.csip-segs__legend span { display: inline-flex; align-items: center; gap: 5px; }
.csip-key { width: 8px; height: 8px; border-radius: 2px; display: inline-block; border: 1px solid var(--c-rule-2); background: var(--c-surface); }
.csip-key--correct { background: var(--c-teal); border-color: var(--c-teal); }
.csip-key--wrong { background: var(--c-rust); border-color: var(--c-rust); }
.csip-key--current { border: 2px solid var(--c-teal); }
/* Custom Quiz (exam style): answered questions are marked neutrally, never as correct/wrong. */
.csip-seg.is-answered { background: var(--c-ink-2); border-color: var(--c-ink-2); }
.csip-key--answered { background: var(--c-ink-2); border-color: var(--c-ink-2); }

/* Chapter Quiz: guest note (XP needs a login; the quiz itself stays open) */
.csip-quiz__guest { max-width: 680px; margin: 0 auto; padding: 12px 40px 0; display: flex; align-items: baseline; gap: 8px; font-size: 12.5px; color: var(--c-ink-2); }
.csip-quiz__guest i { color: var(--c-teal); font-size: 12px; }
.csip-quiz__guest .csip-link { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; font-weight: 700; }
.csip-quiz.is-complete .csip-quiz__guest, .csip-quiz.is-review .csip-quiz__guest { display: none; }

/* ---------- Question card ---------- */
.csip-quiz__wrap { max-width: 680px; margin: 0 auto; padding: 24px 40px 0; }
.csip-quiz.is-player .csip-q { display: none; }
.csip-quiz.is-player .csip-q.is-current,
.csip-quiz.is-review .csip-q { display: block; }
.csip-quiz.is-complete .csip-quiz__wrap { display: none; }
.csip-quiz.is-review .csip-q + .csip-q { margin-top: 16px; }

.csip-q {
    background: var(--c-surface);
    border: 1px solid var(--c-rule);
    border-radius: 6px;
    padding: 34px;
}
.csip-q__head { display: flex; gap: 14px; margin-bottom: 22px; }
.csip-q__num { flex-shrink: 0; font-family: var(--f-serif); font-size: 20px; font-weight: 700; color: var(--c-amber-text); line-height: 1.35; }
.csip-q__text { flex: 1; min-width: 0; font-size: 16px; font-weight: 500; line-height: 1.55; color: var(--c-ink); padding-top: 2px; }

/* Fragment HTML (server-rendered or marked) inside the quiz: keep it inside its box. */
.csip-quiz .quiz-prose { overflow-wrap: anywhere; }
.csip-quiz .quiz-prose > :first-child { margin-top: 0; }
.csip-quiz .quiz-prose > :last-child { margin-bottom: 0; }
.csip-quiz .quiz-prose pre { max-width: 100%; overflow-x: auto; font-size: 13px; line-height: 1.5; }
.csip-quiz .quiz-prose table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; font-size: 13px; }
.csip-quiz .quiz-prose th, .csip-quiz .quiz-prose td { border: 1px solid var(--c-rule); padding: 4px 8px; }
.csip-quiz .quiz-prose img { max-width: 100%; height: auto; }
.csip-quiz .quiz-prose ul, .csip-quiz .quiz-prose ol { padding-left: 1.3em; margin: .4em 0; }
.csip-quiz .quiz-prose ul { list-style: disc; }
.csip-quiz .quiz-prose ol { list-style: decimal; }

.csip-q__opts { display: flex; flex-direction: column; gap: 9px; margin-bottom: 22px; }
.csip-opt {
    display: flex; align-items: center; gap: 12px;
    padding: 13px 14px; border-radius: 6px;
    border: 2px solid var(--c-rule); background: var(--c-surface); color: var(--c-ink);
    cursor: pointer; transition: border-color .15s, background-color .15s;
    outline: none;
}
.csip-opt:hover { border-color: var(--c-rule-2); }
.csip-opt:focus-visible { box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-teal) 35%, transparent); }
.csip-opt__letter { flex-shrink: 0; min-width: 22px; font-family: var(--f-serif); font-size: 14px; font-weight: 700; color: inherit; }
.csip-opt__text { flex: 1; min-width: 0; font-size: 14.5px; line-height: 1.5; color: inherit; }
.csip-opt__flag { display: none; flex-shrink: 0; align-items: center; gap: 5px; font-size: 12px; font-weight: 700; }
.csip-opt__flag--correct { color: var(--c-teal); }
.csip-opt__flag--wrong { color: var(--c-rust); }

.csip-opt.is-selected { border-color: var(--c-teal); background: var(--q-select-bg); }
.csip-q.is-checked .csip-opt { cursor: default; }
.csip-q.is-checked .csip-opt:hover { border-color: var(--c-rule); }
.csip-opt.is-correct, .csip-q.is-checked .csip-opt.is-correct:hover { border-color: var(--c-teal); background: var(--c-teal-tint); color: var(--c-teal-text); }
.csip-opt.is-wrong, .csip-q.is-checked .csip-opt.is-wrong:hover { border-color: var(--c-rust); background: var(--c-rust-tint); color: var(--q-wrong-ink); }
.csip-opt.is-correct .csip-opt__flag--correct, .csip-opt.is-wrong .csip-opt__flag--wrong { display: inline-flex; }
html.dark .csip-opt__flag--correct { color: var(--c-teal-text); }
html.dark .csip-opt__flag--wrong { color: var(--q-wrong-ink); }

.csip-q__check .csip-btn { min-width: 150px; }
.csip-q.is-checked .csip-q__check, .csip-quiz.is-review .csip-q__check { display: none; }

.csip-q__expl { display: none; border-left: 3px solid var(--c-teal); background: var(--c-teal-tint); padding: 16px 18px; }
.csip-q.is-checked .csip-q__expl { display: block; }
.csip-q.is-wrong .csip-q__expl { border-left-color: var(--c-rust); background: var(--c-rust-tint); }
.csip-q__expl-title {
    display: flex; align-items: center; gap: 6px; margin-bottom: 6px;
    font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--c-teal-text);
}
.csip-q.is-wrong .csip-q__expl-title { color: var(--q-wrong-ink); }
.csip-q__expl-ok, .csip-q__expl-no { display: none; }
.csip-q.is-right .csip-q__expl-ok, .csip-q.is-wrong .csip-q__expl-no { display: inline-block; }
.csip-q__expl-body { font-size: 13.5px; line-height: 1.6; color: var(--c-teal-text); }
.csip-q.is-wrong .csip-q__expl-body { color: var(--q-wrong-body); }
/* noscript: all explanations shown without a verdict */
.csip-quiz:not(.is-player) .csip-q__expl-title { color: var(--c-teal-text); }

/* ---------- Next Question ---------- */
.csip-quiz__foot { display: flex; justify-content: flex-end; margin-top: 18px; }
.csip-quiz.is-review .csip-quiz__foot { display: none; }
.csip-quiz__next { min-width: 170px; }
.csip-quiz .csip-quiz__next.is-subdued,
.csip-quiz .csip-quiz__next.is-subdued:hover {
    background: transparent; color: var(--q-subdued); border: 1px solid var(--c-rule);
    font-weight: 600; cursor: not-allowed; pointer-events: auto;
}

/* ---------- Review header ---------- */
.csip-review-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.csip-review-head[hidden] { display: none; }
.csip-review-head__title { margin: 2px 0 0; font-family: var(--f-serif); font-size: 22px; font-weight: 600; color: var(--c-ink); }

/* ---------- Quiz Complete ---------- */
.csip-done { display: flex; justify-content: center; padding: 56px 16px; }
.csip-done[hidden] { display: none; }
.csip-done__card {
    width: 100%; max-width: 560px;
    background: var(--c-surface); border: 1px solid var(--c-rule); border-radius: 14px;
    padding: 44px; text-align: center;
}
.csip-done .csip-eyebrow { margin-bottom: 10px; }
.csip-done__ring {
    --pct: 0;
    position: relative; width: 164px; height: 164px; margin: 0 auto 22px; border-radius: 999px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: conic-gradient(var(--c-teal) calc(var(--pct) * 1%), var(--c-rule) 0);
}
.csip-done__ring::before { content: ''; position: absolute; inset: 8px; border-radius: 999px; background: var(--c-surface); }
.csip-done__ring > * { position: relative; }
.csip-done__score { font-family: var(--f-serif); font-size: 34px; font-weight: 700; color: var(--c-ink); font-variant-numeric: tabular-nums; line-height: 1.15; }
.csip-done__pct { font-size: 11px; font-weight: 600; color: var(--c-ink-3); }
.csip-done__stats { display: flex; justify-content: center; gap: 28px; margin-bottom: 26px; }
.csip-done__num { font-family: var(--f-serif); font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.csip-done__num--correct { color: var(--c-teal); }
.csip-done__num--wrong { color: var(--c-rust); }
.csip-done__num--xp { color: var(--c-amber-text); }
html.dark .csip-done__num--correct { color: var(--c-teal-text); }
.csip-done__label { font-size: 10.5px; font-weight: 600; color: var(--c-ink-3); }
.csip-done__label .csip-link { font-size: 10.5px; font-weight: 700; background: none; border: 0; padding: 0; cursor: pointer; font-family: inherit; }
.csip-done__actions { display: flex; flex-direction: column; gap: 10px; }
.csip-done__row { display: flex; gap: 10px; }
.csip-done__row > * { flex: 1 1 0; min-width: 0; }
.csip-done__more { margin-top: 14px; font-size: 12.5px; }
.csip-done__more .csip-link { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; font-weight: 600; }

.csip-quiz__empty { text-align: center; padding: 48px 24px; background: var(--c-surface); border: 1px solid var(--c-rule); border-radius: 12px; }
.csip-quiz__empty > i { font-size: 30px; color: var(--c-ink-3); margin-bottom: 12px; }
.csip-quiz__empty-title { font-family: var(--f-serif); font-size: 22px; font-weight: 600; margin: 0 0 6px; }
.csip-quiz__empty p { color: var(--c-ink-2); margin: 0 0 18px; }

/* ---------- Phone ---------- */
@media (max-width: 767.98px) {
    .csip-quiz { padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
    .csip-quiz__bar { height: 48px; padding: 0 16px; grid-template-columns: auto minmax(0, 1fr) auto; }
    .csip-quiz__exit span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
    .csip-quiz__exit { margin-left: -8px; padding: 0 8px; }
    .csip-quiz__exit i { font-size: 17px; color: var(--c-ink); }
    .csip-quiz__title { font-size: 13px; text-align: left; }
    .csip-quiz__title-suffix { display: none; }
    .csip-quiz__tools { gap: 10px; }
    .csip-quiz__crumbs { display: none; }
    .csip-quiz__progress { padding: 12px 16px 0; }
    .csip-quiz__guest { padding: 10px 16px 0; font-size: 12px; }
    .csip-quiz__progress-row { font-size: 11px; margin-bottom: 6px; }
    .csip-segs { gap: 3px; }
    .csip-segs--dense { gap: 1px; }
    .csip-seg { height: 6px; }
    .csip-segs__legend { display: none; }
    .csip-quiz__wrap { padding: 18px 16px 0; }
    .csip-q { background: transparent; border: 0; border-radius: 0; padding: 0; }
    .csip-quiz.is-review .csip-q { background: var(--c-surface); border: 1px solid var(--c-rule); border-radius: 6px; padding: 16px; }
    .csip-q__head { gap: 8px; margin-bottom: 14px; }
    .csip-q__num { font-size: 15px; line-height: 1.5; }
    .csip-q__text { font-size: 14px; line-height: 1.5; padding-top: 0; }
    .csip-q__opts { gap: 8px; margin-bottom: 16px; }
    .csip-opt { gap: 10px; padding: 11px 12px; }
    .csip-opt__letter { font-size: 12.5px; min-width: 20px; }
    .csip-opt__text { font-size: 13px; }
    .csip-opt__flag span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
    .csip-opt__flag i { font-size: 15px; }
    .csip-q__check .csip-btn { width: 100%; }
    .csip-q__expl { padding: 12px 14px; }
    .csip-q__expl-title { font-size: 10px; }
    .csip-q__expl-body { font-size: 12.5px; }
    .csip-quiz__foot {
        position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; margin: 0;
        height: calc(70px + env(safe-area-inset-bottom)); padding: 0 16px env(safe-area-inset-bottom);
        display: flex; align-items: center;
        background: var(--c-surface); border-top: 1px solid var(--c-rule);
    }
    .csip-quiz.is-complete .csip-quiz__foot { display: none; }
    .csip-quiz__next { flex: 1; }
    .csip-done { padding: 24px 16px; }
    .csip-done__card { padding: 28px 22px; }
    .csip-done__ring { width: 124px; height: 124px; margin-bottom: 18px; }
    .csip-done__ring::before { inset: 7px; }
    .csip-done__score { font-size: 28px; }
    .csip-done__pct { font-size: 10px; }
    .csip-done__stats { gap: 22px; margin-bottom: 22px; }
    .csip-done__num { font-size: 17px; }
    .csip-done__row .csip-btn { padding: 0 10px; font-size: 13px; }
    .csip-review-head__title { font-size: 18px; }
}

/* ==========================================================================
   /quiz — build-your-own quiz (setup → focused quiz → complete → review)
   ========================================================================== */
.csip-quizhub .hidden { display: none !important; }
.csip-quizhub__inner { max-width: 980px; margin: 0 auto; padding: 40px 32px 24px; }
body.csip-focus .csip-quizhub__inner { max-width: none; padding: 0; }
.csip-quizhub__intro { text-align: center; margin-bottom: 28px; }
.csip-quizhub__title { margin: 6px 0 6px; font-family: var(--f-serif); font-size: 34px; font-weight: 600; color: var(--c-ink); letter-spacing: -0.01em; }
.csip-quizhub__sub { margin: 0; color: var(--c-ink-2); font-size: 15px; }

.csip-quizhub__guest {
    max-width: 560px; margin: 0 auto; text-align: center;
    background: var(--c-surface); border: 1px solid var(--c-rule); border-radius: 14px; padding: 44px 32px;
}
.csip-quizhub__lock { width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 999px; display: flex; align-items: center; justify-content: center; background: var(--c-amber-tint); color: var(--c-amber-text); font-size: 24px; }
.csip-quizhub__guest-title { margin: 0 0 8px; font-family: var(--f-serif); font-size: 26px; font-weight: 600; }
.csip-quizhub__guest p { color: var(--c-ink-2); margin: 0 0 20px; font-size: 14px; line-height: 1.55; }
.csip-quizhub__guest .csip-quizhub__guest-note { margin: 18px 0 0; font-size: 12.5px; color: var(--c-ink-3); }

.csip-setup { background: var(--c-surface); border: 1px solid var(--c-rule); border-radius: 14px; padding: 32px; }
.csip-setup__row { display: flex; gap: 24px; align-items: flex-end; }
.csip-setup__field { flex: 1 1 0; min-width: 0; }
.csip-setup__field--class { flex: 0 1 300px; }
.csip-setup__label { display: block; margin: 0 0 8px 2px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--c-ink-3); }
.csip-seg-toggle { display: flex; height: 46px; padding: 4px; gap: 4px; border-radius: var(--r-md); background: var(--c-band); border: 1px solid var(--c-rule); }
.csip-seg-toggle button {
    flex: 1 1 0; min-width: 0; border: 0; border-radius: 6px; background: transparent; cursor: pointer;
    font-family: inherit; font-size: 13.5px; font-weight: 600; color: var(--c-ink-2);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding: 0 8px;
}
.csip-seg-toggle button:hover { color: var(--c-ink); }
.csip-seg-toggle button.is-active { background: var(--c-surface); color: var(--c-teal); font-weight: 700; box-shadow: 0 1px 3px rgba(27, 42, 65, .12); }
html.dark .csip-seg-toggle button.is-active { background: var(--c-teal); color: var(--c-on-teal); }

.csip-setup__chapters { margin: 28px 0; }
.csip-setup__chapters-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.csip-setup__h { margin: 0; font-family: var(--f-serif); font-size: 19px; font-weight: 600; color: var(--c-ink); }
.csip-setup__all { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; font-size: 12.5px; font-weight: 700; }
.csip-setup__slider { position: relative; }
.csip-setup__arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 2;
    width: 36px; height: 36px; border-radius: 999px; border: 1px solid var(--c-rule); background: var(--c-surface);
    color: var(--c-ink-2); cursor: pointer; box-shadow: var(--shadow-pop); display: flex; align-items: center; justify-content: center;
}
.csip-setup__arrow:hover { color: var(--c-teal); }
.csip-setup__arrow--left { left: -18px; }
.csip-setup__arrow--right { right: -18px; }
.csip-chapter-list { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; padding: 12px 2px; min-height: 164px; align-items: center; }
.csip-chapter-list__msg { width: 100%; flex-shrink: 0; text-align: center; color: var(--c-ink-3); font-size: 14px; padding: 24px 0; }
.csip-chapter-list__msg .fa-spinner { color: var(--c-teal); font-size: 20px; }
.csip-chapter-list__msg--error { color: var(--c-rust); }
.csip-chapter-card { position: relative; flex-shrink: 0; scroll-snap-align: start; cursor: pointer; }
.csip-chapter-card__input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.csip-chapter-card__box {
    width: 160px; height: 136px; padding: 12px; border-radius: 10px;
    border: 2px solid var(--c-rule); background: var(--c-surface);
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; text-align: center;
    transition: border-color .15s, background-color .15s, transform .15s; user-select: none;
}
.csip-chapter-card:hover .csip-chapter-card__box { border-color: var(--c-rule-2); }
.csip-chapter-card__input:focus-visible + .csip-chapter-card__box { box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-teal) 35%, transparent); }
.csip-chapter-card__meta { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--c-ink-3); border: 1px solid var(--c-rule); border-radius: 999px; padding: 3px 8px; background: var(--c-paper); }
.csip-chapter-card__title { font-size: 13.5px; font-weight: 700; line-height: 1.3; color: var(--c-ink); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.csip-chapter-card__input:checked + .csip-chapter-card__box { border-color: var(--c-teal); background: var(--q-select-bg); transform: translateY(-3px); }
.csip-chapter-card__input:checked + .csip-chapter-card__box .csip-chapter-card__meta { color: var(--c-teal-text); border-color: color-mix(in srgb, var(--c-teal) 30%, transparent); }
.csip-chapter-card__tick {
    position: absolute; top: 5px; left: 8px; width: 22px; height: 22px; border-radius: 999px;
    display: none; align-items: center; justify-content: center; font-size: 11px;
    background: var(--c-teal); color: var(--c-on-teal); pointer-events: none;
}
.csip-chapter-card__input:checked ~ .csip-chapter-card__tick { display: flex; }

.csip-setup__row--opts { padding-top: 24px; border-top: 1px solid var(--c-rule); align-items: center; }
.csip-setup__count { color: var(--c-teal); }
.csip-range { width: 100%; accent-color: var(--c-teal); }
.csip-timer-opt {
    flex: 1 1 0; min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 14px; cursor: pointer;
    padding: 14px 16px; border-radius: var(--r-md); border: 1px solid color-mix(in srgb, var(--c-amber) 45%, transparent); background: var(--c-amber-tint);
}
.csip-timer-opt__text { min-width: 0; }
.csip-timer-opt__title { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px; font-weight: 700; color: var(--c-ink); }
.csip-timer-opt__badge { font-size: 10px; font-weight: 800; color: #fff; background: var(--c-amber); border-radius: 999px; padding: 2px 8px; }
.csip-timer-opt__sub { display: block; margin-top: 3px; font-size: 12px; color: var(--c-ink-2); }
.csip-switch { position: relative; flex-shrink: 0; width: 44px; height: 24px; }
.csip-switch input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.csip-switch__track { position: absolute; inset: 0; border-radius: 999px; background: var(--c-rule-2); transition: background .15s; pointer-events: none; }
.csip-switch__track::after { content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 999px; background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,.25); transition: transform .15s; }
.csip-switch input:checked + .csip-switch__track { background: var(--c-amber); }
.csip-switch input:checked + .csip-switch__track::after { transform: translateX(20px); }
.csip-switch input:focus-visible + .csip-switch__track { box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-amber) 40%, transparent); }
.csip-setup__start { margin-top: 28px; }

.csip-quiz__bar--center { grid-template-columns: 1fr auto 1fr; }

/* results: recommendation + review */
.csip-quizhub__rec, .csip-quizhub__review { max-width: 680px; margin: 0 auto; padding: 0 40px; }
.csip-quizhub__review { padding-bottom: 40px; }
.csip-quizhub__review[hidden] { display: none; }
.csip-quizhub__review .csip-review-head__title { margin: 8px 0 14px; }
.csip-rec { margin-bottom: 28px; padding: 20px; border-radius: 12px; border: 1px solid color-mix(in srgb, var(--c-amber) 45%, transparent); background: var(--c-amber-tint); }
.csip-rec__head { display: flex; gap: 12px; align-items: center; }
.csip-rec__icon { flex-shrink: 0; width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; background: var(--c-amber); color: #fff; font-size: 17px; }
.csip-rec__title { margin: 0; font-family: var(--f-serif); font-size: 17px; font-weight: 600; color: var(--c-ink); }
.csip-rec__sub { margin: 2px 0 0; font-size: 12.5px; color: var(--c-amber-text); }
.csip-rec__actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 16px; }
.csip-rec__btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; min-height: 64px; padding: 10px;
    border-radius: var(--r-md); border: 1px solid var(--c-rule); background: var(--c-surface); color: var(--c-ink);
    font: inherit; font-size: 12px; font-weight: 700; text-decoration: none; cursor: pointer; text-align: center;
}
.csip-rec__btn i { color: var(--c-amber); font-size: 16px; }
.csip-rec__btn--primary { background: var(--c-amber); border-color: var(--c-amber); color: #fff; }
.csip-rec__btn--primary i { color: #fff; }

.csip-rv-list { display: flex; flex-direction: column; gap: 14px; }
.csip-rv { padding: 18px 20px; border-radius: 8px; border: 1px solid var(--c-rule); border-left: 3px solid var(--c-teal); background: var(--c-surface); }
.csip-rv.is-wrong { border-left-color: var(--c-rust); }
.csip-rv__head { display: flex; gap: 10px; }
.csip-rv__mark { flex-shrink: 0; padding-top: 2px; }
.csip-rv__icon { font-size: 18px; }
.csip-rv__icon--ok { color: var(--c-teal); }
.csip-rv__icon--no { color: var(--c-rust); }
.csip-rv__q { flex: 1; min-width: 0; font-weight: 600; font-size: 15px; color: var(--c-ink); }
.csip-rv__topic { display: inline-block; font-size: 10px; font-weight: 700; padding: 2px 8px; margin-bottom: 4px; border-radius: 999px; background: var(--c-band); color: var(--c-ink-2); }
.csip-rv__answers { margin: 8px 0 0 28px; display: flex; flex-direction: column; gap: 4px; font-size: 13.5px; }
.csip-rv__answers i { font-size: 11px; opacity: .75; margin-right: 4px; }
.csip-rv__you { color: var(--c-rust); font-weight: 500; overflow-wrap: anywhere; }
.csip-rv__ans { color: var(--c-teal); font-weight: 700; overflow-wrap: anywhere; }
html.dark .csip-rv__ans { color: var(--c-teal-text); }
.csip-rv__expl { margin: 12px 0 0 28px; padding-top: 10px; border-top: 1px solid var(--c-rule); font-size: 12.5px; color: var(--c-ink-2); }
.csip-rv__expl strong { color: var(--c-ink); }
.csip-rv__status { display: inline-block; margin-left: 6px; font-size: 10px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; vertical-align: middle; }
.csip-rv__status--ok { background: color-mix(in srgb, var(--c-teal) 14%, transparent); color: var(--c-teal); }
html.dark .csip-rv__status--ok { color: var(--c-teal-text); }
.csip-rv__status--no { background: color-mix(in srgb, var(--c-rust) 14%, transparent); color: var(--c-rust); }
.csip-rv__status--skip { background: var(--c-band); color: var(--c-ink-2); }
.csip-rv.is-skipped { border-left-color: var(--c-rule-2); }
.csip-rv__you.is-right { color: var(--c-ink-2); }

@media (max-width: 767.98px) {
    body:not(.csip-focus) .csip-quizhub { padding-top: var(--bar-h); } /* fixed mobile top bar */
    .csip-quizhub__inner { padding: 22px 16px 16px; }
    .csip-quizhub__title { font-size: 26px; }
    .csip-quizhub__sub { font-size: 14px; }
    .csip-quizhub__guest { padding: 32px 20px; }
    .csip-setup { padding: 20px 16px; border-radius: 12px; }
    .csip-setup__row { flex-direction: column; align-items: stretch; gap: 16px; }
    .csip-setup__field--class { flex: 1 1 auto; }
    .csip-seg-toggle button { font-size: 13px; }
    .csip-setup__arrow { display: none; }
    .csip-chapter-card__box { width: 142px; height: 128px; }
    .csip-setup__row--opts { gap: 18px; }
    .csip-quizhub__rec, .csip-quizhub__review { padding: 0 16px; }
    .csip-rec__actions { grid-template-columns: 1fr; }
    .csip-rec__btn { flex-direction: row; min-height: 44px; }
    .csip-rv { padding: 14px; }
    .csip-rv__answers, .csip-rv__expl { margin-left: 0; }
}