/* ==========================================================================
   Merit Study Resources — bookshop page
   Loaded after style.css, resources.css and pages.css; reuses their tokens.
   1. Compact header  2. Hero  3. QR lookup card  4. Selector bar
   5. Book grid  6. Book cover  7. Book card  8. How it works
   9. FAQ  10. Responsive
   ========================================================================== */

/* 1. Compact single-row header (bookshop + future pages) ---------------- */
.header-compact {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: #fff;
  border-bottom: 1px solid var(--merit-line);
}
.header-compact .navbar { padding: .75rem 0; }
.header-compact .brand-mark { width: 40px; height: 40px; }
.header-compact .brand-name {
  font-size: .98rem;
  text-transform: none;
  letter-spacing: -.01em;
}
.header-compact .brand-tagline { margin-top: .15rem; font-size: .52rem; letter-spacing: .12em; }
.header-compact .nav-link {
  color: var(--merit-text);
  font-size: .87rem;
  font-weight: 500;
  padding: .5rem .7rem !important;
  border-radius: var(--radius-sm);
  line-height: 1.2;
  transition: color var(--ease), background var(--ease);
}
.header-compact .nav-link:hover { color: var(--merit-green); }
.header-compact .nav-link.active {
  color: var(--merit-dark-green);
  font-weight: 600;
  background: var(--merit-light-green);
}
.nav-two-line { text-align: center; }

.basket-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--merit-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--merit-navy);
  font-size: 1.05rem;
  transition: border-color var(--ease), background var(--ease);
}
.basket-btn:hover { background: var(--merit-light-green); border-color: #cfe5d8; color: var(--merit-dark-green); }
.basket-count {
  position: absolute;
  top: -7px;
  right: -7px;
  min-width: 19px;
  height: 19px;
  padding: 0 5px;
  border-radius: var(--radius-pill);
  background: var(--merit-navy);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  line-height: 19px;
  text-align: center;
  box-shadow: 0 0 0 2px #fff;
}

/* 2. Hero --------------------------------------------------------------- */
.shop-hero {
  position: relative;
  padding: 1.75rem 0 2.75rem;
  background-color: #f6faf7;
  background-image: radial-gradient(rgba(22, 138, 69, .13) 1px, transparent 1.2px);
  background-size: 22px 22px;
  border-bottom: 1px solid var(--card-border, #e5ebe7);
}
.shop-hero .course-crumbs { margin-bottom: 1.25rem; }

.script-eyebrow {
  margin: 0 0 .35rem;
  font-family: "Caveat", cursive;
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--merit-green);
  transform: rotate(-1deg);
  transform-origin: left center;
}

.shop-title {
  font-size: clamp(2rem, 1.2rem + 2.6vw, 3rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.035em;
  margin: 0 0 1rem;
}
.shop-title-accent { color: var(--merit-green); }

.shop-lead {
  max-width: 36rem;
  font-size: 1rem;
  line-height: 1.6;
  color: #4a5f70;
  margin-bottom: 1.25rem;
}

.shop-checks {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem 1.25rem;
  margin: 0;
  max-width: 36rem;
}
.shop-checks li {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .86rem;
  font-weight: 500;
  color: var(--merit-navy);
}
.check-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex: none;
  border-radius: 50%;
  background: var(--merit-green);
  color: #fff;
  font-size: .7rem;
}

/* 3. QR lookup card ----------------------------------------------------- */
.qr-card {
  background: #fff;
  border: 1px solid var(--card-border, #e5ebe7);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.35rem;
}
.qr-card-head { display: flex; gap: .85rem; margin-bottom: 1.1rem; }
.qr-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 10px;
  background: var(--tint-mint);
  color: var(--merit-green);
  font-size: 1.25rem;
}
.qr-title { font-size: 1rem; font-weight: 700; margin: 0 0 .2rem; }
.qr-text { margin: 0; font-size: .84rem; line-height: 1.45; color: var(--merit-muted); }
.qr-card .search-shell { padding: .2rem .4rem .2rem .85rem; margin-bottom: .85rem; }
.qr-card .search-input { padding: .55rem 0; }
.qr-submit {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 42px;
  padding-inline: 1.15rem;
  font-size: .88rem;
}
.qr-note {
  margin: .9rem 0 0;
  font-size: .78rem;
  color: var(--merit-muted);
}

/* 4. Subject / year selector -------------------------------------------- */
.shop-selector {
  background: #fff;
  border-bottom: 1px solid var(--card-border, #e5ebe7);
  padding: 1.1rem 0;
}
.selector-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.selector-row + .selector-row { margin-top: .75rem; }
.selector-label {
  flex: 0 0 3.75rem;
  margin: 0;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--merit-muted);
}
.selector-pills {
  display: flex;
  align-items: center;
  gap: .45rem;
  margin: 0;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 2px;
}
.selector-pills::-webkit-scrollbar { display: none; }
.select-pill {
  flex: none;
  padding: .45rem 1rem;
  min-height: 38px;
  border: 1px solid var(--merit-border);
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--merit-navy);
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}
.select-pill:hover { background: var(--merit-light-green); border-color: #cfe5d8; color: var(--merit-dark-green); }
.select-pill.is-active,
.select-pill[aria-pressed="true"] {
  background: var(--merit-green);
  border-color: var(--merit-green);
  color: #fff;
  box-shadow: var(--shadow-xs);
}
.selector-hint { flex: none; font-size: .8rem; color: var(--merit-muted); white-space: nowrap; }

/* 5. Book grid section -------------------------------------------------- */
.shop-books { padding: 2.25rem 0 3rem; background: var(--page-bg, #f8faf8); }
.books-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
}
.books-title { font-size: clamp(1.35rem, 1.05rem + .9vw, 1.7rem); font-weight: 800; letter-spacing: -.025em; margin: 0 0 .2rem; }
.books-sub { margin: 0; font-size: .88rem; color: var(--merit-muted); }
.books-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .8rem;
  border: 1px solid var(--merit-border);
  border-radius: var(--radius-pill);
  background: #fff;
  font-size: .78rem;
  color: var(--merit-muted);
}
.books-badge i { color: var(--merit-green); }

/* 6. CSS book cover ------------------------------------------------------ */
.book-cover-wrap {
  display: flex;
  justify-content: center;
  padding: 1.25rem 1rem 1.1rem;
  background: linear-gradient(180deg, #f7faf8 0%, #fff 100%);
  border-bottom: 1px solid var(--merit-line);
}
.book-cover {
  --cover: var(--merit-green);
  --cover-dark: var(--merit-dark-green);
  position: relative;
  display: flex;
  flex-direction: column;
  width: 128px;
  aspect-ratio: 3 / 4;
  padding: .7rem .75rem .65rem 1rem;
  border-radius: 3px 8px 8px 3px;
  background: linear-gradient(135deg, var(--cover) 0%, var(--cover-dark) 100%);
  color: #fff;
  box-shadow:
    inset 5px 0 0 rgba(0, 0, 0, .14),
    inset 7px 0 0 rgba(255, 255, 255, .08),
    6px 10px 18px rgba(16, 44, 70, .18);
  transition: transform var(--ease), box-shadow var(--ease);
}
/* page block on the fore-edge */
.book-cover::after {
  content: "";
  position: absolute;
  top: 5px;
  bottom: 5px;
  right: -5px;
  width: 5px;
  border-radius: 0 3px 3px 0;
  background: repeating-linear-gradient(180deg, #fff 0 2px, #e4e9ec 2px 3px);
}
.book-card:hover .book-cover { transform: translateY(-3px) rotate(-1deg); box-shadow: inset 5px 0 0 rgba(0,0,0,.14), inset 7px 0 0 rgba(255,255,255,.08), 8px 14px 22px rgba(16, 44, 70, .22); }

.cover-brand { font-size: .44rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; opacity: .9; }
.cover-series { font-size: .48rem; font-weight: 600; opacity: .85; margin-top: .15rem; }
.cover-title {
  margin: auto 0;
  font-size: .86rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.01em;
  hyphens: manual;
}
.cover-num { font-size: .48rem; font-weight: 700; opacity: .9; }

.book-cover.cover-green { --cover: #1f9a50; --cover-dark: #137a3c; }
.book-cover.cover-blue { --cover: #2f72d6; --cover-dark: #1d55b0; }
.book-cover.cover-orange { --cover: #e05a1f; --cover-dark: #bf4310; }
.book-cover.cover-purple { --cover: #7a3fc4; --cover-dark: #5b2a9f; }

/* 7. Book card ---------------------------------------------------------- */
.book-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid var(--card-border, #e5ebe7);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--ease), box-shadow var(--ease);
}
.book-card:hover { border-color: #cfdcd4; box-shadow: var(--shadow-sm); }

.book-body { display: flex; flex-direction: column; flex: 1 1 auto; padding: 1rem 1rem 1.1rem; }
.book-eyebrow {
  margin: 0 0 .2rem;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--book-ink, var(--merit-green));
}
.book-card.ink-green { --book-ink: #168a45; }
.book-card.ink-blue { --book-ink: #1d5fc4; }
.book-card.ink-orange { --book-ink: #c84b14; }
.book-card.ink-purple { --book-ink: #6a35b4; }

.book-title { font-size: 1.08rem; font-weight: 800; letter-spacing: -.02em; margin: 0 0 .25rem; }
.book-meta { margin: 0 0 .75rem; font-size: .76rem; color: var(--merit-muted); }
.book-desc { font-size: .84rem; line-height: 1.5; color: #4a5f70; margin-bottom: .85rem; }

.book-includes { display: flex; flex-wrap: wrap; gap: .35rem; margin: 0 0 1rem; }
.include-chip {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .18rem .55rem;
  border: 1px solid #d9e9df;
  border-radius: var(--radius-pill);
  background: var(--merit-light-green);
  font-size: .72rem;
  font-weight: 600;
  color: var(--merit-dark-green);
}
.include-chip i { font-size: .7rem; }

.book-actions { display: grid; gap: .5rem; margin-top: auto; }
.book-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 42px;
  font-size: .86rem;
}
.btn-downloads {
  background: var(--merit-light-green);
  border: 1px solid #d9e9df;
  color: var(--merit-dark-green);
  font-weight: 600;
  border-radius: var(--radius-sm);
}
.btn-downloads:hover,
.btn-downloads[aria-expanded="true"] { background: #e2f1e8; border-color: #cfe5d8; color: var(--merit-dark-green); }
.btn-downloads .bi-chevron-down { font-size: .75rem; transition: transform var(--ease); }
.btn-downloads[aria-expanded="true"] .bi-chevron-down { transform: rotate(180deg); }

.download-list {
  display: grid;
  gap: .1rem;
  margin: 0;
  padding: .35rem;
  border: 1px solid var(--merit-line);
  border-radius: var(--radius-sm);
  background: #fbfdfb;
}
.download-list a {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem .55rem;
  border-radius: 6px;
  font-size: .82rem;
  color: var(--merit-text);
}
.download-list a:hover { background: var(--merit-light-green); color: var(--merit-dark-green); text-decoration: none; }
.download-list .bi-file-earmark-pdf { color: var(--ink-rose); }
.download-list .dl-size { margin-left: auto; font-size: .72rem; color: var(--merit-muted); }
.download-locked {
  margin: 0;
  padding: .5rem .55rem;
  font-size: .76rem;
  line-height: 1.45;
  color: var(--merit-muted);
}

.btn-basket {
  position: relative;
  background: #fff;
  border: 1px solid var(--merit-border);
  color: var(--merit-navy);
  font-weight: 600;
  border-radius: var(--radius-sm);
}
.btn-basket:disabled,
.btn-basket.disabled { opacity: 1; color: var(--merit-navy); background: #fff; cursor: not-allowed; }
.soon-badge {
  position: absolute;
  top: -9px;
  right: 10px;
  padding: .1rem .45rem;
  border-radius: var(--radius-pill);
  background: var(--ink-amber);
  color: #fff;
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .08em;
  box-shadow: 0 0 0 2px #fff;
}

/* 8. How the downloads work -------------------------------------------- */
.shop-steps { padding: 3rem 0; background: #fff; border-top: 1px solid var(--merit-line); }
.shop-steps .section-heading { margin-bottom: 1.5rem; }
.step-card {
  height: 100%;
  padding: 1.35rem 1.25rem;
  background: #fbfcfb;
  border: 1px solid var(--card-border, #e5ebe7);
  border-radius: var(--radius);
}
.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: .9rem;
  border-radius: 50%;
  background: var(--merit-green);
  color: #fff;
  font-weight: 700;
  font-size: .88rem;
}
.step-title { font-size: 1rem; font-weight: 700; margin: 0 0 .35rem; }
.step-text { margin: 0; font-size: .85rem; line-height: 1.55; color: var(--merit-muted); }

/* footer logo: keep the green mark (style.css inverts .footer-mark to white) */
.footer-mark-colour { flex: none; border-radius: 9px; }

/* 9. FAQ ---------------------------------------------------------------- */
.shop-faq { padding: 3rem 0 3.5rem; background: var(--page-bg, #f8faf8); border-top: 1px solid var(--merit-line); }
.shop-faq .section-heading { margin-bottom: 1.25rem; }
.shop-faq .topic-accordion .accordion-button { font-size: .93rem; }
.shop-faq .accordion-button:not(.collapsed) { color: var(--merit-dark-green); }
.shop-faq .accordion-body p { margin: 0; font-size: .9rem; line-height: 1.6; color: #41576a; }

/* 10. Responsive -------------------------------------------------------- */
@media (max-width: 1199.98px) {
  .header-compact .nav-link { padding-inline: .5rem !important; font-size: .84rem; }
}

@media (max-width: 991.98px) {
  .header-compact { position: static; }
  .header-compact .navbar-collapse { padding: .75rem 0 .25rem; }
  .nav-two-line { text-align: left; }
  .nav-two-line br { display: none; }
  .qr-card { margin-top: 1.75rem; }
}

@media (max-width: 767.98px) {
  .shop-hero { padding-bottom: 2rem; }
  .selector-row { flex-direction: column; align-items: flex-start; gap: .45rem; }
  .selector-label { flex: none; }
  .selector-pills { width: 100%; }
  .books-head { align-items: flex-start; }
}

@media (max-width: 575.98px) {
  .shop-checks { flex-direction: column; }
  .selector-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .book-card:hover .book-cover { transform: none; }
}