/* ===================================
   HOMEPAGE REDESIGN — additive styles
   Hero CTAs/chips/search-card, decorative hero background, interactive
   product mockup, qualification tabs, storytelling feature grid.
   Reuses existing tokens from mainstyles.css (--primary-color, --radius-*,
   --spacing-*, --shadow-*) — does not redefine .subject-card/.feature-card-link/
   .section-dark/.section-title/.containerhome, only extends around them.
   =================================== */

/* ---------- Hero: dual CTA row ---------- */
.hero-cta-row {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 1.25rem 0 1.75rem;
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.hero-cta-btn:hover {
  transform: translateY(-1px);
}

.hero-cta-btn--primary {
  background: var(--primary-color);
  color: var(--text-inverse);
  box-shadow: var(--button-hover-shadow);
}

.hero-cta-btn--secondary {
  background: var(--background);
  color: var(--text-dark);
  border-color: var(--border-color);
}

/* ---------- Hero: decorative dot/square grid background ---------- */
#hero-section {
  position: relative;
}

#hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(15, 23, 42, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.05) 1px, transparent 1px),
    radial-gradient(circle, rgba(15, 23, 42, 0.16) 1px, transparent 1px);
  background-size:
    28px 28px,
    28px 28px,
    28px 28px;
  -webkit-mask-image: radial-gradient(
    ellipse 60% 55% at 50% 30%,
    black 30%,
    transparent 78%
  );
  mask-image: radial-gradient(
    ellipse 60% 55% at 50% 30%,
    black 30%,
    transparent 78%
  );
}

#hero-section > .containerhome {
  position: relative;
}

:root[data-theme="dark"] #hero-section::before {
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    radial-gradient(circle, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
}

/* mainstyles.css caps .hero-search-container at 800px, while .mockup-wrap
   below it is 1040px — same centered column, so the search card read as
   squashed/narrow next to the wider mockup under it. Match the mockup's
   width so the two feel like one column, not two different widths. */
.hero-search-container,
.hero-search-container:hover {
  max-width: 800px;
}

/* ---------- Hero: search card (search bar + pills as one unit) ---------- */
.hero-search-card {
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

.hero-search-card .hero-search-wrapper input[type="text"] {
  box-shadow: none;
}

.hero-search-divider {
  height: 1px;
  background: var(--border-color);
  margin: 1.15rem 0;
}

/* ---------- Hero: popular search chips ---------- */
.search-chips-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0;
}

.search-chip {
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  /* Opacity gets its own slower, deliberate fade (kept in sync with the
     300ms wait in homepage-redesign.js) — bundling it into the fast 150ms
     hover transition made the rotation read as a blink, not a fade. */
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    opacity 300ms ease;
}

.search-chip:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.search-chip--fading {
  opacity: 0;
}

/* Narrow phones (tested down to 320px): .hero-search-card's own padding
   wasn't accounted for in mainstyles.css's existing 768px search-input
   breakpoint, so the input's usable width shrank enough for the
   placeholder text to run under the search icon. Reclaim that space here
   instead of touching the shared .hero-search-wrapper rules other pages
   depend on. Buttons/chips get the same tightening .hero-demo-cta already
   uses at 768px, just carried one step further for this width. */
/* .hero-wrapper (index.html's own inline <style> block, ~line 181) draws no
   visible card today — its background/box-shadow are commented out — so its
   2rem/side horizontal padding buys no visual benefit on mobile, it just
   shrinks everything inside it (title, CTAs, search card) relative to
   .mockup-wrap, which sits as a sibling of .hero-wrapper further down and
   never passes through this padding at all. This file's <link> loads after
   that inline block, so this same-specificity override wins without
   !important. Vertical padding is left alone - still meaningful spacing
   even with no visible card. */
@media (max-width: 768px) {
  .hero-wrapper {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero-wrapper {
    padding-left: 0;
    padding-right: 0;
  }

  /* .hero-search-container carries its own redundant side padding
     (mainstyles.css) on top of .hero-wrapper's - stacked, that's what made
     the search card read as squashed next to the full-width mockup below
     it. .containerhome's own gutter is enough on its own, same as the
     mockup gets. */
  .hero-search-container {
    padding-left: 0;
    padding-right: 0;
  }

  .hero-search-card {
    padding: 1rem;
  }

  .hero-cta-btn {
    padding: 0.65rem 1.2rem;
    font-size: 0.88rem;
  }

  .search-chip {
    font-size: 0.72rem;
    padding: 0.35rem 0.7rem;
    border-radius: var(--radius-lg);
  }
}

/* ---------- Hero: interactive product mockup ---------- */
.mockup-wrap {
  position: relative;
  max-width: 1040px;
  margin: 3rem auto 0;
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  text-align: left;
}

.mockup-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0.8rem 1.1rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--background-alt);
}

.mockup-chrome-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
}

.mockup-chrome-url {
  margin-left: 10px;
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: 7px;
  padding: 0.3rem 0.85rem;
  font-size: 0.75rem;
  color: var(--text-faint);
}

.mockup-body {
  height: 460px;
  overflow-y: auto;
}

.mockup-view {
  display: none;
}

.mockup-view.active {
  display: block;
}

@media (max-width: 768px) {
  .mockup-body {
    height: 400px;
  }
}

/* Floating "go to the real page" pill — sits above .mockup-body so it stays
   put while the demo list scrolls underneath it, unlike .mockup-ui-fab
   (decorative, scrolls with its tab's content). Label/icon/href are kept in
   sync with the active tab's own data-url by homepage-redesign.js. */
.mockup-floating-cta {
  position: absolute;
  top: 46%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-xl);
  border: 3px solid var(--background);
  background: var(--primary-color);
  color: var(--text-inverse);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: var(--shadow-xl);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  /* Pulsing halo ring, drawn from the same theme-flipping --primary-color
     token used everywhere else (bright red on light, lightened red on dark)
     so the glow reads clearly against either theme's page background. */
  animation: mockup-cta-ring-pulse 2.2s ease-out infinite;
}

@keyframes mockup-cta-ring-pulse {
  0% {
    box-shadow:
      var(--shadow-xl),
      0 0 0 0 color-mix(in srgb, var(--primary-color) 55%, transparent);
  }
  70% {
    box-shadow:
      var(--shadow-xl),
      0 0 0 12px color-mix(in srgb, var(--primary-color) 0%, transparent);
  }
  100% {
    box-shadow:
      var(--shadow-xl),
      0 0 0 0 color-mix(in srgb, var(--primary-color) 0%, transparent);
  }
}

.mockup-floating-cta:hover {
  transform: translate(-50%, -50%) translateY(-2px);
  animation-play-state: paused;
  box-shadow: var(--shadow-xl), var(--button-hover-shadow);
  color: var(--text-inverse);
}

.mockup-floating-cta i {
  font-size: 0.85rem;
}

@media (prefers-reduced-motion: reduce) {
  .mockup-floating-cta {
    animation: none;
  }

  .mockup-floating-cta i.fa-bounce {
    animation: none;
  }
}

@media (max-width: 480px) {
  .mockup-floating-cta {
    gap: 0.4rem;
    padding: 0.6rem 1.05rem;
    font-size: 0.78rem;
  }

  .mockup-floating-cta i {
    font-size: 0.72rem;
  }
}

/* ---------- Static product-mockup UI (scoped under .mockup-ui-*, zero
   leakage in/out) — recreates the real app's own building blocks (paper
   rows, filter rail, question cards with lettered parts + mark tags) out
   of plain HTML/CSS instead of an iframe, so it's light on bandwidth and
   scales cleanly on mobile without the transform-scale iframe hack. */
.mockup-ui {
  position: relative;
  padding: 1.1rem 1.25rem 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.mockup-ui-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.9rem;
  color: var(--text-faint);
  font-size: 0.8rem;
  flex: 1 1 200px;
  min-width: 140px;
}

.mockup-ui-search i {
  font-size: 0.78rem;
}

.mockup-ui-search--compact {
  flex: 0 1 180px;
}

.mockup-ui-pills {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.mockup-ui-pill {
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  white-space: nowrap;
}

.mockup-ui-pill--active {
  background: var(--primary-color-dim);
  color: var(--primary-color);
  border-color: transparent;
}

.mockup-ui-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--background);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.mockup-ui-btn--primary {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--text-inverse);
}

/* -- Past Papers dashboard tab -- */
.mockup-ui-pp-layout {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1rem;
}

.mockup-ui-pp-rail {
  border-right: 1px solid var(--border-color);
  padding-right: 1rem;
}

.mockup-ui-pp-main {
  flex: 1 1 auto;
  min-width: 0;
}

.mockup-ui-pp-rail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.mockup-ui-clear-link {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.72rem;
}

.mockup-ui-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 15px;
  height: 15px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--primary-color);
  color: var(--text-inverse);
  font-size: 0.62rem;
  font-weight: 700;
}

.mockup-ui-filter-group {
  margin-bottom: 0.9rem;
}

.mockup-ui-filter-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  margin-bottom: 0.45rem;
}

.mockup-ui-filter-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  padding: 0.2rem 0;
}

.mockup-ui-filter-row input {
  accent-color: var(--primary-color);
}

.mockup-ui-pp-toolbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
}

.mockup-ui-pp-viewtoggle {
  display: flex;
  gap: 0.35rem;
  flex: 0 0 auto;
  color: var(--text-faint);
  font-size: 0.85rem;
}

.mockup-ui-pp-viewtoggle-active {
  color: var(--text-dark);
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.4rem;
}

.mockup-ui-pp-filterbtn {
  display: none;
  flex: 0 0 auto;
}

.mockup-ui-pp-tabs {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-faint);
  margin-bottom: 0.7rem;
}

.mockup-ui-pp-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.mockup-ui-pp-tab--active {
  color: var(--text-dark);
}

.mockup-ui-pp-sort {
  margin-left: auto;
  color: var(--text-faint);
  font-weight: 600;
}

.mockup-ui-pp-chips {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}

.mockup-ui-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
}

.mockup-ui-chip i {
  font-size: 0.6rem;
  color: var(--text-faint);
}

.mockup-ui-pp-count {
  color: var(--text-faint);
  font-size: 0.74rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.mockup-ui-pp-subject-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.8rem;
  margin-bottom: 0.7rem;
}

.mockup-ui-code-badge {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
  font-weight: 700;
  font-size: 0.68rem;
  padding: 0.15rem 0.45rem;
  border-radius: 5px;
  flex: 0 0 auto;
}

.mockup-ui-code-badge--sm {
  font-size: 0.62rem;
}

.mockup-ui-pp-subject-name {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.82rem;
  flex: 1 1 auto;
}

.mockup-ui-pp-subject-meta {
  color: var(--text-faint);
  font-size: 0.7rem;
  flex: 0 0 auto;
}

.mockup-ui-pp-year-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-faint);
  font-size: 0.74rem;
  padding: 0.4rem 0.1rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 0.6rem;
}

.mockup-ui-pp-year-row strong {
  color: var(--text-dark);
}

.mockup-ui-paper-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.5rem;
  background: var(--background);
}

.mockup-ui-paper-thumb {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}

.mockup-ui-paper-main {
  flex: 1 1 auto;
  min-width: 0;
}

.mockup-ui-paper-title-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mockup-ui-paper-title {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.8rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1 1 auto;
  min-width: 0;
}

.mockup-ui-paper-meta {
  color: var(--text-faint);
  font-size: 0.72rem;
  margin-top: 0.15rem;
}

.mockup-ui-paper-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 0 0 auto;
}

.mockup-ui-paper-actions .far {
  color: var(--text-faint);
  font-size: 0.85rem;
}

/* Mirrors the real Past Papers app's own ≤640px row-wrap treatment
   (past-papers-premium.css .pp-row/.pp-row-actions): once the row can't
   fit thumb + text + actions on one line, drop actions to their own
   full-width line under the text instead of letting the meta line
   ("0625 · Cambridge · Feb/Mar 2026 · 40 marks") get squeezed into a
   sliver and wrap word-by-word. */
@media (max-width: 480px) {
  .mockup-ui-paper-row {
    flex-wrap: wrap;
    align-items: flex-start;
    row-gap: 8px;
  }

  .mockup-ui-paper-thumb {
    margin-top: 2px;
  }

  .mockup-ui-paper-main {
    flex: 1 1 0;
    min-width: 0;
  }

  .mockup-ui-paper-actions {
    flex: 0 0 100%;
    padding-left: calc(34px + 0.75rem);
  }

  .mockup-ui-btn--ms {
    font-size: 0;
    padding-left: 0.6rem;
    padding-right: 0.6rem;
  }

  .mockup-ui-btn--ms i {
    font-size: 0.78rem;
  }

  .mockup-ui-btn--ms::after {
    content: "MS";
    font-size: 0.78rem;
    margin-left: 0.3rem;
  }
}

.mockup-ui-fab {
  position: absolute;
  right: 1.1rem;
  bottom: 1.1rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: var(--primary-color);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: default;
}

/* -- Topical Questions rail (subject header + units/topics tree) -- */
.mockup-ui-tq-layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1rem;
}

.mockup-ui-tq-rail {
  border-right: 1px solid var(--border-color);
  padding-right: 0.9rem;
}

.mockup-ui-tq-main {
  flex: 1 1 auto;
  min-width: 0;
}

.mockup-ui-tq-unit {
  margin-bottom: 0.3rem;
}

.mockup-ui-tq-subject {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}

.mockup-ui-tq-subject-icon {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
  font-size: 0.85rem;
}

.mockup-ui-tq-subject-name {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.82rem;
}

.mockup-ui-tq-subject-meta {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-faint);
  font-size: 0.66rem;
  margin-top: 0.1rem;
}

.mockup-ui-tq-subject-meta i {
  color: var(--secondary-color);
}

.mockup-ui-search--sm {
  padding: 0.45rem 0.7rem;
  font-size: 0.72rem;
  margin-bottom: 0.9rem;
}

.mockup-ui-tq-section-label {
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  margin-bottom: 0.4rem;
}

.mockup-ui-tq-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.mockup-ui-tq-row--unit {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.74rem;
  padding: 0.35rem 0;
}

.mockup-ui-tq-row--unit .fa-chevron-down {
  font-size: 0.58rem;
  color: var(--text-faint);
}

.mockup-ui-tq-row--topic {
  color: var(--text-secondary);
  font-size: 0.72rem;
  padding: 0.28rem 0 0.28rem 1.15rem;
}

.mockup-ui-tq-row--active {
  color: var(--primary-color);
  font-weight: 700;
}

.mockup-ui-tq-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.mockup-ui-tq-row-name {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mockup-ui-tq-count {
  flex: 0 0 auto;
  background: var(--background-dark);
  color: var(--text-faint);
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
}

/* -- Question-set view (shared by Topical Questions / Test Builder tabs) -- */
.mockup-ui-qtoolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.9rem;
}

.mockup-ui-qtoolbar-icon {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}

.mockup-ui-qtoolbar-headings {
  flex: 1 1 auto;
  min-width: 0;
}

.mockup-ui-qtoolbar-title {
  font-weight: 800;
  color: var(--text-dark);
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup-ui-qtoolbar-meta {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.mockup-ui-qfilterbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.mockup-ui-qset-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.8rem;
  color: var(--text-faint);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.8rem;
}

.mockup-ui-question-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  background: var(--background);
}

.mockup-ui-q-num-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.mockup-ui-q-num {
  font-weight: 800;
  color: var(--text-dark);
  font-size: 0.85rem;
}

.mockup-ui-q-source {
  font-style: italic;
  color: var(--text-faint);
  font-size: 0.7rem;
}

.mockup-ui-q-stem {
  color: var(--text-secondary);
  font-size: 0.82rem;
  line-height: 1.45;
  margin-bottom: 0.5rem;
}

.mockup-ui-q-diagram {
  display: flex;
  justify-content: center;
  margin: 0.7rem 0;
}

.mockup-ui-q-diagram svg {
  max-width: 220px;
}

.mockup-ui-q-diagram img {
  max-width: 100%;
  max-height: 140px;
  border-radius: var(--radius-sm);
}

.mockup-ui-q-line {
  height: 9px;
  border-radius: 5px;
  background: var(--background-dark);
  margin-bottom: 0.5rem;
}

.mockup-ui-q-line--40 {
  width: 40%;
}
.mockup-ui-q-line--60 {
  width: 60%;
}
.mockup-ui-q-line--65 {
  width: 65%;
}
.mockup-ui-q-line--70 {
  width: 70%;
}
.mockup-ui-q-line--80 {
  width: 80%;
}
.mockup-ui-q-line--85 {
  width: 85%;
}
.mockup-ui-q-line--88 {
  width: 88%;
}
.mockup-ui-q-line--90 {
  width: 90%;
}
.mockup-ui-q-line--95 {
  width: 95%;
}

.mockup-ui-q-part {
  margin-top: 0.85rem;
}

.mockup-ui-q-part-row {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.mockup-ui-q-part-label {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.78rem;
  flex: 0 0 auto;
}

.mockup-ui-q-part-text {
  flex: 1 1 auto;
  color: var(--text-secondary);
  font-size: 0.8rem;
  line-height: 1.45;
}

.mockup-ui-q-part-marks {
  flex: 0 0 auto;
  font-weight: 700;
  color: var(--text-faint);
  font-size: 0.75rem;
}

.mockup-ui-answer-line {
  height: 1px;
  border-bottom: 1px dashed var(--border-color);
  margin: 0.55rem 0 0 1.15rem;
}

/* -- Revision Notes preview tab -- */
.mockup-ui-notes-header {
  margin-bottom: 0.9rem;
}

.mockup-ui-notes-crumb {
  display: block;
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.3rem;
}

/* Mirrors the real notes renderer's own rules (content/styles/subjects.css
   .notes-content h3/.note-list/.note-sublist), scaled down to fit this
   compact preview tile — same hanging-indent disc/circle bullet hierarchy,
   muted sub-bullets — rather than the generic skeleton-bar look this tab had
   before. This preview shows a numbered subsection heading (as it actually
   appears on the real topic page), so it's plain bold text with no colored
   divider — that treatment is reserved for real top-level h2 topic titles. */
.mockup-ui-notes-h3 {
  color: var(--text-dark);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.9rem;
}

.mockup-ui-notes-text {
  color: var(--text-dark);
  font-size: 0.8rem;
  line-height: 1.6;
  margin: 0 0 0.7rem;
}

.mockup-ui-notes-list {
  margin: 0 0 0.5rem;
  padding-left: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.mockup-ui-notes-list > li {
  list-style: disc;
  list-style-position: inside;
  padding-left: 1em;
  text-indent: -1em;
  color: var(--text-dark);
  font-size: 0.8rem;
}

.mockup-ui-notes-list strong {
  color: var(--text-dark);
  font-weight: 600;
}

.mockup-ui-notes-sublist {
  margin: 0.5rem 0 0;
  padding-left: 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mockup-ui-notes-sublist > li {
  list-style: circle;
  list-style-position: inside;
  padding-left: 1em;
  text-indent: -1em;
  color: var(--text-light);
  font-size: 0.78rem;
}

/* Same white-matte treatment as .pq-diagram img (subjects.css) — this PNG's
   line art sits on a plain white background, so on this mockup's dark tile
   it needs the same visible frame real diagrams get in dark mode, rather
   than blending straight into the surrounding dark background. */
.mockup-ui-notes-diagram {
  margin: 0.9rem 0 0;
  text-align: center;
}

.mockup-ui-notes-diagram img {
  max-width: 100%;
  height: auto;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.mockup-ui-notes-caption {
  display: block;
  margin-top: 0.5rem;
  color: var(--text-faint);
  font-size: 0.7rem;
  text-align: center;
  line-height: 1.4;
}

@media (max-width: 768px) {
  .mockup-ui-pp-layout,
  .mockup-ui-tq-layout {
    grid-template-columns: 1fr;
  }
  .mockup-ui-pp-rail,
  .mockup-ui-tq-rail {
    display: none;
  }
  .mockup-ui-pp-viewtoggle {
    display: none;
  }
  .mockup-ui-pp-filterbtn {
    display: inline-flex;
  }
}

.mockup-tabbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  background: var(--background-alt);
}

.mockup-tab {
  background: var(--background);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.6rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.mockup-tab.active {
  background: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
}

/* ---------- Qualification tab bar ---------- */
.qual-tabbar {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.qual-tab {
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 0.65rem 1.3rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.qual-tab.active {
  background: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
}

.qual-panel {
  display: none;
}

.qual-panel.active {
  display: block;
}

/* No manual dark-mode overrides needed here: every rule above is built from
   --background/--background-alt/--border-color/--text-dark etc., which
   mainstyles.css already redefines under :root[data-theme="dark"] — adding
   a second, static dark override on top (as an earlier version of this file
   did, via --surface-dark/--surface-darker) fought the real theme instead
   of matching it. */

@media (prefers-reduced-motion: reduce) {
  .hero-cta-btn,
  .search-chip {
    transition: none !important;
  }
}