/* Study Hall — warm paper, ink, and one accent color per subject. */
:root {
  /* warm neutrals */
  --paper: #f8f3ea;
  --paper-2: #efe6d6;
  --card: #fffcf6;
  --ink: #2b241d;
  --ink-2: #665a4b;
  --ink-3: #968a79;
  --line: #e8dfcf;
  /* primary: warm forest green */
  --brand: #3b6b45;
  --brand-hover: #2f5838;
  --brand-ink: #fff;
  /* progress & success */
  --green: #4f9a5e;
  --green-soft: #8fc58f;
  --green-bg: #e3f0dc;
  --track: #e9e3d3;
  /* subjects */
  --math: #8f6310;   --math-bg: #f6e8c6;   /* honey */
  --sci: #3f7a50;    --sci-bg: #e1eedb;    /* sage */
  --hum: #7a5638;    --hum-bg: #f0e2d0;    /* cocoa */
  --fin: #3d6470;    --fin-bg: #dfe9e8;    /* slate teal */
  --lang: #8a4a5c;   --lang-bg: #f3e1e4;   /* plum */
  /* notices (amber) and errors (red, used only for problems) */
  --notice: #9a6716; --notice-bg: #fbefd6;
  --err: #b3392b;    --err-bg: #fbe9e5;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(43, 36, 29, .05), 0 6px 20px rgba(43, 36, 29, .06);
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.6 var(--sans); min-height: 100vh; display: flex; flex-direction: column;
}
main { flex: 1; padding-bottom: 64px; }
a { color: var(--brand); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.15; letter-spacing: -.01em; }
h1 { font-size: clamp(1.9rem, 3.5vw, 2.6rem); margin: .2em 0 .4em; }
code { background: var(--paper-2); padding: .1em .35em; border-radius: 5px; font-size: .92em; }
[hidden] { display: none !important; }

.wrap { width: min(1120px, 100% - 40px); margin-inline: auto; }
.narrow-wide { max-width: 860px; padding-top: 24px; }
.muted { color: var(--ink-2); }
.small { font-size: .85rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; font-weight: 600; color: var(--ink-3); margin: 0; }
.lede { font-size: 1.12rem; color: var(--ink-2); max-width: 60ch; }
.meta { font-size: .85rem; color: var(--ink-3); }
.page-title { margin-top: 36px; }
.section-title { font-size: 1.3rem; margin: 2em 0 .8em; }
.back { display: inline-block; margin: 24px 0 8px; font-size: .9rem; text-decoration: none; color: var(--ink-2); }
.back:hover { color: var(--ink); }

/* ---------- top bar */
.topbar { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font: 700 1.2rem var(--serif); color: var(--ink); text-decoration: none; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 1rem; }
.nav { display: flex; align-items: center; gap: 20px; }
.nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav a:hover { color: var(--ink); }
.nav .btn { color: var(--brand-ink); }
.cart-link { position: relative; display: inline-flex; padding: 4px; }
.badge { position: absolute; top: -6px; right: -10px; background: var(--green); color: #fff; border-radius: 999px; font-size: .7rem; font-weight: 600; min-width: 18px; height: 18px; display: grid; place-items: center; padding: 0 5px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--paper-2); display: grid; place-items: center; font-weight: 600; color: var(--ink) !important; }
form.inline { display: inline; margin: 0; }
.linklike { background: none; border: 0; padding: 0; font: inherit; font-weight: 500; font-size: .95rem; color: var(--ink-2); cursor: pointer; }
.linklike:hover { color: var(--ink); text-decoration: underline; }
.linklike.danger:hover { color: var(--err); }

/* ---------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--brand); color: var(--brand-ink); border: 1px solid var(--brand);
  border-radius: 10px; padding: 9px 16px; font: 600 .95rem var(--sans); text-decoration: none;
  cursor: pointer; transition: transform .08s ease, background .15s ease, box-shadow .15s ease; white-space: nowrap;
}
.btn:hover { background: var(--brand-hover); box-shadow: 0 4px 12px rgba(59, 107, 69, .22); }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--brand); border-color: var(--line); }
.btn-ghost:hover { background: var(--paper-2); box-shadow: none; }
.btn-small { padding: 6px 12px; font-size: .88rem; }
.btn-lg { padding: 13px 20px; font-size: 1rem; }
.btn-block { width: 100%; }
.btn-done { background: var(--green); border-color: var(--green); }
.btn-done:hover { background: var(--brand); }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- flashes & toast */
.flashes { margin-top: 16px; display: grid; gap: 8px; }
.flashes:not(:has(.flash)) { display: none; }
.flash { padding: 12px 16px; border-radius: 10px; background: var(--card); border: 1px solid var(--line); border-left-width: 4px; }
.flash-success { border-left-color: var(--green); background: #f4f9ef; }
.flash-error { border-left-color: var(--err); background: var(--err-bg); }
.flash-info { border-left-color: var(--notice); background: #fdf7ea; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--brand); color: #fff; padding: 12px 18px; border-radius: 10px;
  box-shadow: var(--shadow); font-size: .95rem; z-index: 50; animation: rise .2s ease;
}
.toast a { color: #fff; font-weight: 600; margin-left: 10px; }
@keyframes rise { from { opacity: 0; transform: translate(-50%, 8px); } }

/* ---------- hero */
.hero { background: linear-gradient(180deg, var(--card), var(--paper)); border-bottom: 1px solid var(--line); }
.hero-inner { padding: 64px 0 56px; }
.hero h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); }

/* ---------- catalog */
.catalog { padding-top: 32px; }
.catalog-tools { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1px solid var(--line); background: var(--card); color: var(--ink-2); padding: 7px 14px; border-radius: 999px; font: 500 .9rem var(--sans); cursor: pointer; }
.chip:hover { color: var(--ink); }
.chip.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
#course-search { border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 9px 14px; font: inherit; min-width: 240px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 22px; }
.empty { text-align: center; color: var(--ink-3); padding: 40px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .15s ease; }
.card:hover { transform: translateY(-2px); box-shadow: 0 2px 4px rgba(31,28,23,.06), 0 12px 28px rgba(31,28,23,.09); }
.card-link { display: block; text-decoration: none; }
.card-body { padding: 18px 20px 6px; flex: 1; }
.card-title { font-size: 1.25rem; margin: 4px 0 6px; }
.card-title a { color: var(--ink); text-decoration: none; }
.card-title a:hover { text-decoration: underline; }
.card-summary { color: var(--ink-2); margin: 0; font-size: .95rem; }
.card-foot { padding: 14px 20px 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-foot form { margin: 0; }
.price { font: 700 1.15rem var(--serif); }
.owned-tag { display: inline-block; font: 600 .8rem var(--sans); color: var(--brand); background: var(--green-bg); padding: 4px 10px; border-radius: 999px; margin: 0; }

/* ---------- generated covers */
.cover { position: relative; height: 140px; display: flex; align-items: flex-end; padding: 14px 18px; overflow: hidden; }
.cover::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(currentColor 1px, transparent 1.2px); background-size: 16px 16px; opacity: .14; }
.cover-glyph { position: absolute; right: 14px; top: -10px; font: 700 7.5rem/1 var(--serif); opacity: .9; }
.cover-subject { position: relative; font: 600 .75rem var(--sans); text-transform: uppercase; letter-spacing: .12em; background: rgba(255,255,255,.75); padding: 4px 9px; border-radius: 6px; }
.cover-math { background: var(--math-bg); color: var(--math); }
.cover-sci { background: var(--sci-bg); color: var(--sci); }
.cover-hum { background: var(--hum-bg); color: var(--hum); }
.cover-fin { background: var(--fin-bg); color: var(--fin); }
.cover-lang { background: var(--lang-bg); color: var(--lang); }
.cover-lg { height: 180px; }
.cover-lg .cover-glyph { font-size: 9.5rem; }
.cover-sm { width: 72px; height: 56px; border-radius: 10px; padding: 0; flex-shrink: 0; }
.cover-sm .cover-glyph { font-size: 3rem; top: 2px; right: 50%; transform: translateX(50%); }
.cover-sm .cover-subject { display: none; }

/* ---------- course page */
.course-layout { display: grid; grid-template-columns: 1fr 340px; gap: 48px; align-items: start; margin-top: 12px; }
.syllabus { list-style: none; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.syllabus li { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-top: 1px solid var(--line); }
.syllabus li:first-child { border-top: 0; }
.syl-num { width: 28px; height: 28px; border-radius: 50%; background: var(--paper-2); display: grid; place-items: center; font-size: .85rem; font-weight: 600; flex-shrink: 0; }
.syl-title { flex: 1; font-weight: 500; }
.syl-min { color: var(--ink-3); font-size: .85rem; white-space: nowrap; }
.lock { font-size: .8rem; margin-left: 4px; }
.buybox { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); position: sticky; top: 88px; }
.buybox-body { padding: 20px 22px 24px; }
.buybox .btn { width: 100%; }
.price-lg { font: 700 2rem var(--serif); margin: 0 0 8px; }
.facts { list-style: none; padding: 0; margin: 0 0 20px; color: var(--ink-2); font-size: .93rem; }
.facts li { padding: 5px 0 5px 22px; position: relative; }
.facts li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }

/* ---------- cart */
.cart-layout { display: grid; grid-template-columns: 1fr 300px; gap: 32px; align-items: start; }
.cart-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.cart-item { display: flex; align-items: center; gap: 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.cart-item form { margin: 0; }
.cart-item-main { flex: 1; min-width: 0; }
.cart-item-title { font-weight: 600; color: var(--ink); text-decoration: none; }
.cart-item-price { font: 700 1.05rem var(--serif); }
.summary { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.summary-row { display: flex; justify-content: space-between; padding: 6px 0; color: var(--ink-2); }
.summary-row.total { color: var(--ink); font-weight: 700; font-size: 1.1rem; border-top: 1px solid var(--line); margin: 8px 0 16px; padding-top: 14px; }
.fine { font-size: .85rem; color: var(--ink-3); margin: 12px 0 0; }
.demo-note { color: var(--notice); }
.empty-state { text-align: center; padding: 64px 0; }

/* discounts */
.cart-item-price { text-align: right; }
.was { color: var(--ink-3); font: 400 .85rem var(--sans); display: block; }
.discount-tag { display: block; font: 600 .75rem var(--sans); color: var(--brand); }
.was-inline { color: var(--ink-3); font-size: 1.1rem; font-weight: 400; margin-right: 4px; }
.discount-note { color: var(--brand); font-size: .88rem; font-weight: 600; margin: -4px 0 10px; }
.pair-note { color: var(--brand); font-size: .88rem; }
p.pair-note { margin: 10px 0 0; line-height: 1.45; }
.pair-offer { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin: 12px 0 0; padding: 12px 16px; border: 1px dashed var(--brand); border-radius: 10px; }
.pair-offer p { margin: 0; }
/* Long course names: the button wraps inside the box instead of running past it. */
.pair-offer form { min-width: 0; max-width: 100%; }
.pair-offer .btn { white-space: normal; text-align: center; max-width: 100%; }
.pair-fields { border: 1px solid var(--line, #ddd); border-radius: 8px; padding: 10px 14px; }
.pair-fields legend { font-weight: 600; }
.discount-row { color: var(--brand); font-weight: 600; }

/* ---------- auth & forms */
.auth { display: grid; place-items: center; padding-top: 40px; }
.auth-card { width: min(440px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 32px; box-shadow: var(--shadow); }
.auth-card h1 { font-size: 1.8rem; margin-top: 0; }
.form { display: grid; gap: 16px; margin-top: 20px; }
.form label { display: grid; gap: 6px; font-weight: 500; font-size: .92rem; }
.form input { font: inherit; padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.form input:focus, #course-search:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
.hint { font-weight: 400; font-size: .8rem; color: var(--ink-3); }
.stack { display: grid; gap: 10px; margin-top: 20px; }
.demo-banner { background: var(--notice-bg); color: var(--notice); font-weight: 600; font-size: .85rem; padding: 6px 12px; border-radius: 8px; display: inline-block; margin: 0 0 8px; }
.summary-list { list-style: none; padding: 0; margin: 20px 0 0; }
.summary-list li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--line); }
.summary-list .total { font-weight: 700; border-bottom: 0; }

/* ---------- order complete */
.success-head { text-align: center; padding: 40px 0 28px; }
.success-icon { width: 64px; height: 64px; border-radius: 50%; background: var(--green-bg); color: var(--brand); display: grid; place-items: center; font-size: 1.8rem; font-weight: 700; margin: 0 auto 8px; }
.success-icon.pending { background: var(--paper-2); color: var(--ink-2); }

/* ---------- progress */
.progress { height: 8px; background: var(--track); border-radius: 999px; overflow: hidden; margin: 10px 0 6px; }
.progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--green-soft), var(--green)); border-radius: inherit; transition: width .35s ease; }

/* ---------- study view */
.study-layout { display: grid; grid-template-columns: 280px 1fr; gap: 48px; align-items: start; }
.theme-math { --accent: var(--math); --accent-bg: var(--math-bg); }
.theme-sci  { --accent: var(--sci);  --accent-bg: var(--sci-bg); }
.theme-hum  { --accent: var(--hum);  --accent-bg: var(--hum-bg); }
.theme-fin  { --accent: var(--fin);  --accent-bg: var(--fin-bg); }
.theme-lang { --accent: var(--lang); --accent-bg: var(--lang-bg); }
.study-side { position: sticky; top: 80px; padding-bottom: 24px;
  /* Scrolls on its own, so the end of a long outline is reachable without scrolling the lesson */
  max-height: calc(100vh - 96px); overflow-y: auto; overscroll-behavior: contain;
  margin: 0 -8px; padding-left: 8px; padding-right: 8px; scrollbar-width: thin; scrollbar-color: var(--track) transparent; }
.side-title { font-size: 1.2rem; margin: 8px 0 4px; }
.lesson-nav { list-style: none; padding: 0; margin: 18px 0 0; }
.lesson-nav a { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border-radius: 10px; color: var(--ink-2); text-decoration: none; font-size: .94rem; }
.lesson-nav a:hover { background: var(--paper-2); color: var(--ink); }
.lesson-nav .is-current a { background: var(--card); color: var(--ink); font-weight: 600; box-shadow: var(--shadow); }
.dot { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--line); flex-shrink: 0; margin-top: 4px; display: grid; place-items: center; }
.is-done .dot { background: var(--green); border-color: var(--green); }
.is-done .dot::after { content: "✓"; color: #fff; font-size: 10px; font-weight: 700; }

.lesson { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 40px 48px; margin-top: 24px; box-shadow: var(--shadow); max-width: 760px; }
.lesson .eyebrow { color: var(--accent); }
.lesson-body { font-size: 1.05rem; line-height: 1.75; }
.lesson-body h3 { font-size: 1.2rem; margin: 1.6em 0 .4em; }
.lesson-body ul, .lesson-body ol { padding-left: 1.3em; }
.lesson-body li { margin: .3em 0; }
.example { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin: 1em 0; }
.callout { background: var(--accent-bg); border-left: 4px solid var(--accent); border-radius: 0 10px 10px 0; padding: 12px 18px; margin: 1.2em 0; }
.say-btn { border: 0; background: none; padding: 0 2px; margin-left: 2px; cursor: pointer; font-size: .8em; line-height: 1; opacity: .55; vertical-align: baseline; }
.say-btn:hover, .say-btn:focus-visible { opacity: 1; }
.formula { font: 600 1.15rem var(--serif); text-align: center; background: var(--paper); border-radius: 10px; padding: 14px; margin: 1em 0; }
.table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: .95rem; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { font-weight: 600; background: var(--paper); }

.quiz { margin-top: 36px; border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; background: var(--paper); }
.quiz h2 { font-size: 1.1rem; margin: 0 0 6px; }
.quiz-q { font-weight: 500; margin: 0 0 14px; }
.quiz-options { display: grid; gap: 8px; }
.quiz-opt { display: flex; align-items: center; gap: 12px; text-align: left; font: inherit; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; cursor: pointer; transition: border-color .12s; }
.quiz-opt:hover:not(:disabled) { border-color: var(--accent); }
.quiz-opt:disabled { cursor: default; color: var(--ink); }
.quiz-opt:disabled:not(.is-correct):not(.is-wrong) { opacity: .6; }
.quiz-letter { width: 26px; height: 26px; border-radius: 7px; background: var(--paper-2); display: grid; place-items: center; font-weight: 600; font-size: .85rem; flex-shrink: 0; }
.quiz-opt.is-correct { border-color: var(--green); background: var(--green-bg); }
.quiz-opt.is-correct .quiz-letter { background: var(--green); color: #fff; }
.quiz-opt.is-wrong { border-color: var(--err); background: var(--err-bg); }
.quiz-opt.is-wrong .quiz-letter { background: var(--err); color: #fff; }
.quiz-explain { margin: 14px 0 0; }
.quiz-retry { margin-top: 8px; }

.lesson-foot { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); margin-top: 36px; padding-top: 24px; }
.lesson-foot form { margin: 0; }
.pager { display: flex; gap: 8px; }

/* ---------- access & expiry */
.access-note { font-size: .85rem; font-weight: 600; color: var(--brand); }
.access-note.is-soon { color: var(--notice); }
.access-note.is-ended { color: var(--ink-3); }
.card-access { margin-top: 10px; }
.side-access { margin-top: 2px; font-size: .85rem; }
.buybox-access { margin: 10px 0 14px; }
.buybox-second { margin-top: 10px; }
.renew-tag { display: inline-block; font-size: .75rem; font-weight: 600; color: var(--notice); background: var(--notice-bg); padding: 1px 8px; border-radius: 999px; }
.card.is-dimmed .cover { filter: saturate(.4); opacity: .75; }
.top0 { margin-top: 0; }
.label-row { display: flex; justify-content: space-between; align-items: baseline; }
.label-row a { font-weight: 500; }

/* ---------- course outline (study sidebar) */
.side-title a { color: var(--ink); text-decoration: none; }
.outline { margin-top: 18px; display: grid; gap: 6px; }
.outline-chapter summary { list-style: none; cursor: pointer; display: flex; gap: 10px; align-items: flex-start; padding: 8px 10px; border-radius: 10px; font-weight: 600; font-size: .94rem; }
.outline-chapter summary::-webkit-details-marker { display: none; }
.outline-chapter summary:hover { background: var(--paper-2); }
.outline-chapter[open] summary { color: var(--ink); }
.ch-num { width: 22px; height: 22px; border-radius: 6px; background: var(--paper-2); display: grid; place-items: center; font-size: .78rem; flex-shrink: 0; margin-top: 1px; }
.outline .lesson-nav { margin: 2px 0 6px 18px; }
.dot-quiz { border-radius: 4px; }
.best { font-size: .78rem; color: var(--ink-3); font-weight: 500; }
.outline-test { margin-top: 6px; border-top: 1px solid var(--line); padding-top: 8px; }
.outline-test a { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border-radius: 10px; color: var(--ink); text-decoration: none; font-weight: 600; font-size: .94rem; }
.outline-test a:hover { background: var(--paper-2); }
.outline-test.is-current a { background: var(--card); box-shadow: var(--shadow); }
.outline-test.is-done .dot { background: var(--green); border-color: var(--green); }
.outline-test.is-done .dot::after { content: "✓"; color: #fff; font-size: 10px; font-weight: 700; }

/* sections inside chapters */
.lesson-nav .nav-section { font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); padding: 10px 12px 2px; }
.lesson-nav li.in-section a { padding-left: 20px; }
.syllabus .syl-section { background: var(--paper); font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); padding: 9px 18px; }
.syllabus li.in-section .syl-title { padding-left: 10px; }

/* ---------- syllabus by chapter (course page) */
.syllabus-chapters { display: grid; gap: 18px; }
.syllabus-chapter h3 { display: flex; gap: 10px; align-items: center; font-size: 1.15rem; margin: 0 0 4px; }
.syllabus-chapter > p { margin: 0 0 10px 32px; }
.syl-quiz .syl-title { font-weight: 600; }
.syl-quiz .syl-title::before { content: "✎ "; color: var(--brand); }
.syl-test .syl-title::before { content: "★ "; }
.syllabus li.is-done .syl-title a { color: var(--brand); }
.tick { color: var(--green); font-weight: 700; margin-left: 4px; }
.course-progress { margin: -6px 0 16px; }

/* ---------- quizzes & tests */
.quiz-facts { display: flex; gap: 12px; margin: 8px 0 20px; flex-wrap: wrap; }
.quiz-facts div { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px; min-width: 110px; }
.quiz-facts strong { display: block; font: 700 1.5rem var(--serif); }
.quiz-facts span { font-size: .85rem; color: var(--ink-3); }
.start-form { margin: 20px 0 8px; }
.status-retry { background: var(--notice-bg); color: var(--notice); }
.attempt-form { display: grid; gap: 18px; margin-top: 12px; }
.question { border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 0; background: var(--paper); }
.question legend, .q-prompt { font-weight: 600; padding: 0; margin: 0 0 12px; display: flex; gap: 10px; float: left; width: 100%; }
.question .quiz-options { clear: both; }
.q-num { width: 26px; height: 26px; border-radius: 50%; background: var(--card); border: 1px solid var(--line); display: grid; place-items: center; font-size: .8rem; flex-shrink: 0; }
.question.is-answered .q-num { background: var(--green); border-color: var(--green); color: #fff; }
label.quiz-opt { position: relative; }
label.quiz-opt input { position: absolute; opacity: 0; pointer-events: none; }
label.quiz-opt:has(input:checked) { border-color: var(--brand); background: var(--green-bg); }
label.quiz-opt:has(input:checked) .quiz-letter { background: var(--brand); color: #fff; }
label.quiz-opt:has(input:focus-visible) { outline: 2px solid var(--brand); outline-offset: 2px; }
.attempt-submit { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; position: sticky; bottom: 0; background: var(--card); padding: 14px 0; border-top: 1px solid var(--line); }
.unanswered-warning { color: var(--notice); flex-basis: 100%; order: 3; margin: 0; }
.score-card { display: flex; gap: 22px; align-items: center; border-radius: 16px; padding: 22px 26px; margin: 8px 0 18px; }
.score-card h1 { margin: 0 0 4px; font-size: 1.7rem; }
.score-card p { margin: 0; }
.score-card.is-pass { background: var(--green-bg); }
.score-card.is-retry { background: var(--notice-bg); }
.score-num { font: 700 2.6rem var(--serif); min-width: 110px; text-align: center; }
.is-pass .score-num { color: var(--brand); }
.is-retry .score-num { color: var(--notice); }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.result-actions form { margin: 0; }
.question.reviewed { margin-bottom: 14px; border-left-width: 4px; }
.question.reviewed.is-right { border-left-color: var(--green); }
.question.reviewed.is-wrong { border-left-color: var(--err); }
.review-options { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; clear: both; }
.review-options li { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); }
.review-options li.is-correct { border-color: var(--green); background: var(--green-bg); }
.review-options li.is-correct .quiz-letter { background: var(--green); color: #fff; }
.review-options li.is-wrong { border-color: var(--err); background: var(--err-bg); }
.review-options li.is-wrong .quiz-letter { background: var(--err); color: #fff; }
.tag { margin-left: auto; font-size: .75rem; font-weight: 600; color: var(--ink-2); }
.tag-ok { color: var(--brand); }
.tag + .tag { margin-left: 8px; }
.explain { margin: 12px 0 0; font-size: .95rem; color: var(--ink-2); }
.review-options li { display: grid; grid-template-columns: auto 1fr auto; column-gap: 12px; }
.review-options .tags { display: flex; gap: 8px; }
.review-options .tags .tag { margin-left: 0; }
.review-options .why { grid-column: 2 / -1; margin: 4px 0 0; font-size: .9rem; color: var(--ink-2); }
.review-options .why strong { color: var(--ink); font-weight: 600; }
.results td { vertical-align: middle; }

/* ---------- admin */
.admin-banner { background: var(--notice-bg); color: var(--notice); font-size: .92rem; padding: 10px 0; border-bottom: 1px solid #efdcb2; }
.admin-banner a { color: var(--notice); font-weight: 600; }
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.stat strong { display: block; font: 700 1.6rem var(--serif); }
.stat span { color: var(--ink-3); font-size: .85rem; }
.admin .table { font-size: .9rem; }

/* ---------- admin editor */
.admin-narrow { max-width: 860px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 24px 0 4px; font-size: .9rem; color: var(--ink-3); }
.crumbs a { color: var(--ink-2); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }
.admin-head { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.admin-head h1 { margin-bottom: .2em; }
.admin-head p { margin-top: 0; }
.admin-head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.admin-cols { display: grid; grid-template-columns: 1fr 380px; gap: 36px; align-items: start; }
.admin-inline { font-size: .88rem; background: var(--notice-bg); color: var(--notice); padding: 8px 12px; border-radius: 8px; margin: 0 0 12px; display: inline-block; }
.admin-inline a { color: var(--notice); font-weight: 600; }
.ch-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; box-shadow: var(--shadow); scroll-margin-top: 90px; }
.ch-card:target { outline: 2px solid var(--green-soft); }
.ch-card-head { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.ch-card-title { flex: 1; display: grid; gap: 2px; }
.ch-card-foot { display: flex; gap: 8px; padding: 10px 16px; border-top: 1px solid var(--line); }
.admin-list { list-style: none; margin: 0; padding: 4px 0; }
.admin-list li { display: flex; gap: 12px; align-items: center; padding: 8px 16px; }
.admin-list li + li { border-top: 1px dashed var(--line); }
.admin-list .grow { flex: 1; }
.admin-list a.grow { color: var(--ink); text-decoration: none; font-weight: 500; }
.admin-list a.grow:hover { text-decoration: underline; }
.quiz-row { background: var(--paper); }
.row-actions { display: flex; gap: 6px; align-items: center; }
.icon-btn { border: 1px solid var(--line); background: var(--card); border-radius: 7px; width: 28px; height: 28px; cursor: pointer; color: var(--ink-2); font: inherit; line-height: 1; }
.icon-btn:hover { border-color: var(--brand); color: var(--brand); }
.add-row { display: flex; gap: 8px; margin: 4px 0 24px; }
.add-row input { flex: 1; }
.panel-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-grid.three { grid-template-columns: repeat(3, 1fr); }
.form-grid .span-2 { grid-column: span 2; }
.admin-cols aside .form-grid { grid-template-columns: 1fr; }
.admin-cols aside .form-grid .span-2 { grid-column: auto; }
.form-grid label, .inline-fields label, .block-label { display: grid; gap: 5px; font-weight: 500; font-size: .9rem; align-content: start; }
.block-label { margin-top: 18px; }
.admin input:not([type="checkbox"]), .admin textarea, .admin select, .add-row input {
  font: inherit; font-weight: 400; padding: 9px 11px; border: 1px solid var(--line); border-radius: 9px; background: #fff; width: 100%; color: var(--ink); }
.admin input:focus, .admin textarea:focus, .admin select:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
.admin textarea { resize: vertical; }
label.check { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; align-self: end; padding-bottom: 8px; }
label.check .hint { flex-basis: 100%; }
.input-prefix { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 9px; background: #fff; overflow: hidden; }
.input-prefix span { padding: 0 2px 0 10px; color: var(--ink-3); font-weight: 400; font-size: .88rem; }
.admin .input-prefix input { border: 0; padding-left: 2px; }
.form-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.inline-fields { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; padding: 14px 16px; }
.inline-fields label { flex: 1; min-width: 120px; }
.danger-zone { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.editor-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 16px; }
.editor-toolbar { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 8px; }
.editor-toolbar .chip { padding: 4px 10px; font-size: .82rem; }
.code-input { font-family: ui-monospace, SFMono-Regular, Menlo, monospace !important; font-size: .85rem !important; line-height: 1.55; min-height: 420px; }
.preview-label { margin-bottom: 8px; padding-top: 6px; }
.preview-pane { margin-top: 0; padding: 26px 30px; max-height: 620px; overflow: auto; }
.page-editor .form-grid { max-width: 700px; }
.filter-chips { margin: 8px 0 18px; }
.filter-chips .chip { text-decoration: none; }
.choice-rows { display: grid; gap: 8px; margin: 12px 0 10px; }
.choice-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 6px 8px; border-radius: 10px; border: 1px solid var(--line); background: var(--paper); }
.choice-row.is-correct { border-color: var(--green); background: var(--green-bg); }
.choice-row [data-choice-text] { flex: 1 1 0; min-width: 0; width: auto; }
.choice-row .choice-why { flex: 1 0 100%; font-size: .9rem; }
.choice-row.is-correct .choice-why { display: none; }
.correct-toggle { display: flex; gap: 6px; align-items: center; font-size: .85rem; font-weight: 500; white-space: nowrap; cursor: pointer; }
.correct-toggle input { accent-color: var(--green); width: 16px; height: 16px; }
.ok-text { color: var(--brand); font-weight: 600; }
.notice-text { color: var(--notice) !important; }
.nowrap { white-space: nowrap; }
tr.is-muted td { color: var(--ink-3); }

/* admin: sections in the course editor */
.admin-list li.admin-section { background: var(--paper); font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-2); }
.admin-list li.admin-section .linklike { text-transform: none; letter-spacing: 0; font-weight: 500; }
.admin-list li.in-section { padding-left: 30px; }
.rename { position: relative; }
.rename summary { list-style: none; cursor: pointer; }
.rename summary::-webkit-details-marker { display: none; }
.rename-form { position: absolute; right: 0; top: 24px; z-index: 5; display: flex; gap: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px; box-shadow: var(--shadow); width: 320px; text-transform: none; letter-spacing: 0; }
.page-editor .form-grid { grid-template-columns: 2fr 1fr 2fr; max-width: none; }

/* ---------- admin users */
.search-form { display: flex; gap: 8px; }
.search-form input { min-width: 280px; }
.access-actions { border-top: 1px solid var(--line); }
.access-actions summary { cursor: pointer; padding: 10px 16px; font-size: .9rem; font-weight: 600; color: var(--brand); }
.access-forms { display: grid; gap: 10px; padding: 4px 16px 16px; }
.access-forms form:not(.inline) { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: .9rem; }
.access-forms label { display: flex; gap: 6px; align-items: center; }
.admin .w-num { width: 80px !important; }
.admin .access-forms input[type="date"] { width: auto; }
.access-quick { display: flex; gap: 14px; align-items: center; }
.check-inline { display: inline-flex; gap: 6px; align-items: center; font-size: .88rem; color: var(--ink-2); font-weight: 400; }
.grant-form { margin: 6px 0 10px; }
.inline-fields.flush { padding: 8px 0; }
.activity { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: .9rem; }
.activity li { display: grid; gap: 2px; border-left: 3px solid var(--line); padding-left: 10px; }
.section-title .linklike { margin-left: 8px; font-family: var(--sans); }

/* ---------- API tokens */
.token-box { background: var(--green-bg); border: 1px solid var(--green-soft); border-radius: var(--radius); padding: 16px 18px; margin: 16px 0; }
.token-row { display: flex; gap: 10px; align-items: center; }
.token-row code { flex: 1; background: var(--card); padding: 8px 10px; border-radius: 8px; word-break: break-all; font-size: .88rem; }
.code-sample { background: var(--ink); color: #f3eee4; padding: 12px 14px; border-radius: 10px; overflow-x: auto; font-size: .82rem; margin: 6px 0 0; }

/* ---------- account */
.panel { display: flex; gap: 48px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; }
.panel-action { margin: 0 0 0 auto; align-self: center; display: flex; gap: 8px; flex-wrap: wrap; }
.orders { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.status { font-size: .8rem; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: var(--paper-2); }
.status-paid { background: var(--green-bg); color: var(--brand); }
.status-pending { background: var(--notice-bg); color: var(--notice); }

/* ---------- footer */
.footer { border-top: 1px solid var(--line); padding: 24px 0; color: var(--ink-3); font-size: .85rem; }
.footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }

/* ---------- responsive */
@media (max-width: 980px) {
  .admin-cols, .editor-cols { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .course-layout, .cart-layout, .study-layout { grid-template-columns: 1fr; gap: 24px; }
  .form-grid, .form-grid.three { grid-template-columns: 1fr; }
  .form-grid .span-2 { grid-column: auto; }
  .buybox, .study-side { position: static; }
  .study-side { max-height: none; overflow: visible; }
  .lesson { padding: 28px 22px; }
  .nav { gap: 14px; }
  .nav .linklike { display: none; }
  #course-search { min-width: 0; width: 100%; }
  .panel { flex-direction: column; gap: 12px; }
}
@media (max-width: 520px) {
  .nav > a:first-child { display: none; }
  .cart-item { flex-wrap: wrap; }
}

/* Collapsible answers on practice pages */
.lesson-body details.answers { margin: 1.5em 0; padding: 12px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.lesson-body details.answers summary { cursor: pointer; font-weight: 600; }
.lesson-body details.answers[open] summary { margin-bottom: .5em; }

/* Listening: audio players in quiz questions and lesson pages */
.q-audio { display: block; width: 100%; max-width: 420px; margin: 10px 0 4px; }
.lesson-body .listening-item { margin: 1.5em 0; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); }
.lesson-body .listening-item audio { display: block; width: 100%; max-width: 420px; margin: 8px 0; }
.lesson-body .listening-item ol.choices { margin: .5em 0; }
.lesson-body .vocab-table td:first-child { font-size: 1.1rem; }
.lesson-body ul.examples { list-style: none; padding-left: 0; }
.lesson-body ul.examples li { margin: .6em 0; }
.lesson-body p.note { background: var(--paper); border-left: 3px solid var(--line); padding: 8px 12px; }
.lesson-body .listening-item .quiz-options { margin: 10px 0 14px; }

/* In-page practice questions */
.lesson-body .practice { margin-top: 2.5em; padding-top: 1.2em; border-top: 2px solid var(--line); }
.lesson-body .practice-intro { color: var(--ink-2); font-size: .95rem; }
.lesson-body .practice-q { margin: 1.4em 0; }
.lesson-body .practice-q .quiz-explain p { margin: .3em 0; }
.lesson-body .practice-verdict { font-weight: 600; }
.lesson-body .practice-verdict.is-right { color: var(--green); }
.lesson-body .practice-verdict.is-wrong { color: var(--err); }
.lesson-body .practice-score { font-weight: 600; }

/* Furigana */
.lesson-body ruby rt { font-size: .55em; font-weight: 500; color: var(--ink-2); }
.lesson-body .listening-item h4 { line-height: 2.1; margin-top: 0; }

/* ---------- progress milestones (25/50/75/100%) */
.milestones { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 4px; padding: 0; }
.milestone { display: inline-flex; align-items: center; gap: 4px; font: 600 .75rem var(--sans); padding: 3px 9px; border-radius: 999px; border: 1px dashed var(--ink-3); color: var(--ink-3); background: transparent; }
.milestone.is-earned { border: 1px solid var(--green); background: var(--green-bg); color: var(--brand); }
.milestone.is-final.is-earned { background: var(--green); color: #fff; }
.milestones.is-compact .milestone { font-size: .7rem; padding: 2px 7px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Sentence-pattern list */
.lesson-body .pattern-ex { margin: 0 0 .6em; }
.lesson-body .pattern-ex:last-child { margin-bottom: 0; }
.lesson-body a.other-part { white-space: nowrap; text-decoration-style: dotted; }
.lesson-body .pattern-ex .ctx { color: var(--ink-2); font-style: italic; }
.lesson-body .patterns-table { table-layout: fixed; }
.lesson-body .patterns-table td { overflow-wrap: anywhere; }
/* The Lesson column is sized to fit its heading (the content's 7% was too narrow on smaller
   screens, so "Lesson" spilled out); Examples takes what is left. */
.lesson-body .patterns-table col:nth-child(1) { width: 23% !important; }
.lesson-body .patterns-table col:nth-child(2) { width: 18% !important; }
.lesson-body .patterns-table col:nth-child(3) { width: auto !important; }
.lesson-body .patterns-table col:nth-child(4) { width: 5.5em !important; }
.lesson-body .patterns-table th:last-child, .lesson-body .patterns-table td:last-child { white-space: nowrap; }

/* refunds */
.status-refunded { background: var(--paper-2); color: var(--err); }
.table tr.subrow td { border-top: 0; padding-top: 0; }
details.refund > summary { cursor: pointer; color: var(--err); font-size: .9rem; }
details.refund[open] > summary { margin-bottom: 8px; }
.btn-danger { background: var(--err); border-color: var(--err); }
.agree { display: flex; gap: 8px; align-items: flex-start; font-size: .85rem; margin: 10px 0 12px; line-height: 1.4; }
.agree input { margin-top: 3px; flex: none; }
.legal { max-width: 46rem; }
.legal h2 { margin-top: 1.6em; }
.legal .draft-note { background: var(--notice-bg); color: var(--notice); padding: 10px 14px; border-radius: 8px; }
.cart-item .no-refund { color: var(--notice); margin-top: 4px; }
.summary .no-refund { color: var(--notice); }
.status-blocked { background: var(--paper-2); color: var(--err); }
/* receipts and payments admin */
.receipt-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.table .num { text-align: right; white-space: nowrap; }
.receipt-meta th { width: 9rem; font-weight: 600; }
@media print { .topbar, .footer, .no-print, .admin-banner, .flashes { display: none !important; } body { background: #fff; } }
.status-canceled { background: var(--paper-2); color: var(--ink-2); }
.status-disputed { background: var(--err-bg); color: var(--err); }
.action-grid { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 4px; }
.action-grid form { margin: 0; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; margin-bottom: 14px; }
.filters label { display: flex; flex-direction: column; font-size: .85rem; gap: 4px; }
.sales-row .stat strong { font-size: 1.2rem; }
.kv { display: grid; grid-template-columns: 9rem 1fr; gap: 6px 12px; font-size: .92rem; }
.kv dt { color: var(--ink-2); }
.kv dd { margin: 0; }
.plain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
/* payments summary */
.stat .delta { display: block; margin-top: 4px; }
.stat .delta.up { color: var(--brand); }
.stat .delta.down { color: var(--err); }
.summary-table tr.is-current td { background: var(--paper-2); }
.bar-chart { margin: 0 0 8px; }
.bar-chart svg { width: 100%; height: auto; display: block; }
.bar-chart .grid { stroke: var(--line); stroke-width: 1; }
.bar-chart .zero { stroke: var(--ink-2); stroke-width: 1; }
.bar-chart .axis { font-size: 11px; fill: var(--ink-2); }
.bar-chart .mark { fill: var(--brand); }
.bar-chart .neg .mark { fill: var(--err); }
.bar-chart .hit { fill: transparent; }
.bar-chart .bar:hover .mark { opacity: .8; }
.heading-note { font: 400 .85rem/1 var(--sans, inherit); color: var(--ink-2); margin-left: 6px; }

/* Lesson illustrations (SVG drawings in static/img/) */
.lesson-body figure.illus { margin: 1.4em auto; max-width: 760px; text-align: center; }
.lesson-body figure.illus img { display: block; width: 100%; height: auto; border-radius: 16px;
  border: 1px solid var(--line); background: var(--card); }
.lesson-body figure.illus figcaption { margin-top: .5em; color: var(--ink-2); font-size: .9rem; }

/* Listening questions answered with pictures (JLPT style): a 2x2 grid of drawings */
.pic-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.pic-options .pic-opt { display: block; position: relative; padding: 6px; text-align: center; }
.pic-options .pic-opt[hidden] { display: none; }
.pic-opt .quiz-letter { position: absolute; top: 8px; left: 8px; }
.pic-choice { display: block; width: 100%; height: auto; border-radius: 10px; }
.pic-answer { display: block; width: 100%; max-width: 360px; height: auto; border-radius: 10px;
  border: 1px solid var(--line); }
.pic-notes { padding-left: 0; list-style: none; }
.pic-notes li { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.pic-thumb { width: 96px; height: auto; flex: none; border-radius: 6px; border: 1px solid var(--line); }

/* Quiz answers that are pictures ([[img:…]] choices) */
.choice-img { display: block; width: 100%; max-width: 360px; height: auto; border-radius: 10px; }
.pic-options .quiz-opt { flex-direction: column; align-items: flex-start; }
.pic-review li .choice-img { max-width: 220px; margin-top: 4px; }

/* Final test: optional stopwatch */
.test-timer { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 0 0 18px; }
.test-timer.is-on { position: sticky; top: var(--timer-top, 80px); z-index: 9; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 8px 14px; box-shadow: 0 2px 10px rgba(0, 0, 0, .06); }
.timer-display { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.timer-note { margin: -8px 0 18px; }
.test-timer.is-paused .timer-display { color: var(--ink-3); }
.paused-msg { background: var(--paper-2); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.attempt-form.is-paused [data-question] { filter: blur(6px); pointer-events: none; user-select: none; }
.attempt-form.is-paused [data-submit-btn] { pointer-events: none; opacity: .5; }

/* Reading questions that carry their passage */
.q-reading { display: block; flex: 1; min-width: 0; }
.q-label { display: block; font-size: .8rem; font-weight: 600; letter-spacing: .02em; color: var(--ink-3); margin-bottom: 6px; }
.passage { display: block; font-weight: 400; background: var(--paper-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; margin: 4px 0 10px; line-height: 1.9; }
.passage-q { display: block; }

/* Grammar points: one block each, a tinted header strip with the pattern, a line between points */
.gp { padding: 6px 0 22px; }
.gp + .gp { border-top: 1px solid var(--line); padding-top: 26px; }
.gp-head { background: var(--lang-bg); border-left: 4px solid var(--lang); border-radius: 10px;
  padding: 10px 16px 9px; margin: 0 0 14px; }
.gp-head h3 { margin: 0; color: var(--lang); font-size: 1.3rem; }
.gp-meaning { margin: 2px 0 0; color: var(--ink-2); font-style: italic; }