/* =====================================================================
   Course homepage redesign : Intro to SQL for Organizing with BigQuery
   ---------------------------------------------------------------------
   Scoped redesign that runs only on /courses/intro-to-sql-bigquery/index.html
   via the body class .home-redesign. It layers on top of styles.css :
   nothing in the existing stylesheet needs to change.

   Visual direction (from user reference):
   - Soft cool gradient backdrop (peach → lavender → pale teal-blue)
   - Floating white tiles with strong soft shadows + generous radius
   - Cool lavender/purple accent for "italic word" emphasis moments
   - Modern sans (Inter / Inter Display) sitewide; Fraunces only on hero h1
   ===================================================================== */

.home-redesign {
  /* New design tokens */
  --rd-bg-peach: #F8E2D2;
  --rd-bg-lavender: #E0DAF5;
  --rd-bg-teal: #D2E9EA;
  --rd-bg-white: #FFFFFF;

  --rd-accent: #7B6BBF;       /* lavender : the "italic word" emphasis */
  --rd-accent-deep: #5B4DA0;
  --rd-accent-soft: rgba(123, 107, 191, 0.12);

  --rd-teal: #01696F;          /* brand teal kept for continuity */
  --rd-teal-soft: rgba(1, 105, 111, 0.08);
  --rd-coral: #E8946A;         /* secondary accent: warm peach-coral */

  --rd-text: #1F1B30;          /* slightly cooler than #28251D */
  --rd-text-muted: #6B6878;

  --rd-tile-bg: rgba(255, 255, 255, 0.78);
  --rd-tile-border: rgba(255, 255, 255, 0.85);
  --rd-tile-shadow:
    0 1px 2px rgba(31, 27, 48, 0.04),
    0 6px 16px rgba(31, 27, 48, 0.08),
    0 24px 48px rgba(31, 27, 48, 0.06);
  --rd-tile-shadow-hover:
    0 1px 2px rgba(31, 27, 48, 0.05),
    0 10px 24px rgba(31, 27, 48, 0.12),
    0 32px 64px rgba(31, 27, 48, 0.10);

  --rd-radius-sm: 14px;
  --rd-radius-md: 22px;
  --rd-radius-lg: 32px;

  /* Display font (Inter Tight = tighter tracking, modern display feel)
     and body (Inter). Falls back to system sans. */
  --rd-font-display: 'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
  --rd-font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --rd-font-serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
}

/* ----- Background gradient (the soft peach → lavender → teal wash) -----
   Sized to fit the viewport plus repeating-friendly base wash so the gradient
   doesn't cut off on tall pages. background-attachment: fixed would feel nicer
   on scroll but creates banding when the page is taller than the viewport :
   so we use background-attachment: scroll with the base linear-gradient sized
   to the document. */

.home-redesign .main {
  background:
    radial-gradient(1100px 700px at 85% 5%, rgba(248, 226, 210, 0.85), transparent 60%),
    radial-gradient(1200px 800px at 10% 18%, rgba(224, 218, 245, 0.75), transparent 65%),
    radial-gradient(1000px 800px at 70% 45%, rgba(210, 233, 234, 0.80), transparent 60%),
    radial-gradient(900px 700px at 30% 80%, rgba(232, 215, 240, 0.65), transparent 65%),
    linear-gradient(180deg, #F5EFE8 0%, #EAE3F4 35%, #DDE8EB 70%, #E8E0F0 100%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  min-height: 100vh;
}

.home-redesign .content {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.5rem clamp(1rem, 4vw, 3rem) 6rem;
  font-family: var(--rd-font-body);
  color: var(--rd-text);
}

.home-redesign body,
.home-redesign p,
.home-redesign h1,
.home-redesign h2,
.home-redesign h3,
.home-redesign h4,
.home-redesign h5,
.home-redesign li,
.home-redesign a {
  font-family: var(--rd-font-body);
  color: var(--rd-text);
}

.home-redesign .content p,
.home-redesign .content li {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--rd-text);
}

/* Sidebar stays calm : match the new palette but keep its function */
.home-redesign .sidebar {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid rgba(31, 27, 48, 0.06);
}

.home-redesign .sidebar .brand-name {
  font-family: var(--rd-font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.home-redesign .nav-module-head {
  color: var(--rd-text);
  font-family: var(--rd-font-body);
  font-weight: 500;
}

.home-redesign .nav-module-head.is-active {
  background: var(--rd-accent-soft);
  color: var(--rd-accent-deep);
}

.home-redesign .nav-module-head .badge-mini {
  background: rgba(123, 107, 191, 0.10);
  color: var(--rd-accent-deep);
}

.home-redesign .progress-bar > span {
  background: linear-gradient(90deg, var(--rd-teal), var(--rd-accent));
}

/* ----- Hero ----- */

.home-redesign .landing-hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  margin-bottom: 4rem;
  padding-top: 2rem;
}

.home-redesign .landing-hero .eyebrow {
  display: inline-block;
  font-family: var(--rd-font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rd-accent-deep);
  background: rgba(255, 255, 255, 0.7);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(123, 107, 191, 0.18);
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04);
  margin-bottom: 1.25rem;
}

.home-redesign .landing-hero h1 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  color: var(--rd-text);
}

.home-redesign .landing-hero h1 em {
  font-style: italic;
  font-family: var(--rd-font-serif);
  font-weight: 500;
  color: var(--rd-accent);
}

.home-redesign .landing-hero .lede {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--rd-text-muted);
  margin-bottom: 1.75rem;
  max-width: 30rem;
}

.home-redesign .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.home-redesign .btn-link.primary {
  background: var(--rd-text);
  color: #FFFFFF;
  padding: 0.9rem 1.5rem;
  border-radius: 999px;
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
  box-shadow: 0 6px 18px rgba(31, 27, 48, 0.18);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.home-redesign .btn-link.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(31, 27, 48, 0.22);
}

.home-redesign .btn-link.ghost {
  background: rgba(255, 255, 255, 0.7);
  color: var(--rd-text);
  padding: 0.9rem 1.5rem;
  border-radius: 999px;
  font-family: var(--rd-font-display);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid rgba(31, 27, 48, 0.10);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 160ms ease, transform 160ms ease;
}

.home-redesign .btn-link.ghost:hover {
  background: #FFFFFF;
  transform: translateY(-1px);
}

/* Hero art : floating preview tile */
.home-redesign .hero-art {
  position: relative;
}

.home-redesign .hero-art > svg {
  width: 100%;
  height: auto;
  border-radius: var(--rd-radius-lg);
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  box-shadow: var(--rd-tile-shadow);
  transform: rotate(-1.2deg);
}

.home-redesign .hero-art::before,
.home-redesign .hero-art::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(40px);
  z-index: -1;
}

.home-redesign .hero-art::before {
  width: 220px;
  height: 220px;
  background: rgba(232, 148, 106, 0.45);
  top: -30px;
  right: -20px;
}

.home-redesign .hero-art::after {
  width: 280px;
  height: 280px;
  background: rgba(123, 107, 191, 0.35);
  bottom: -40px;
  left: -30px;
}

/* ----- Section spacing + headings ----- */

.home-redesign .section {
  margin: 4.5rem 0;
}

.home-redesign .section h2 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.75rem;
}

.home-redesign .section h2 em {
  font-style: italic;
  color: var(--rd-accent);
}

.home-redesign .section-lede {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--rd-text-muted);
  max-width: 42rem;
  margin: 0 0 2rem;
}

/* ----- Floating tiles: "What you will do" principles grid ----- */

.home-redesign .principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.home-redesign .principle {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-md);
  padding: 1.5rem 1.5rem 1.75rem;
  box-shadow: var(--rd-tile-shadow);
  transition: transform 200ms ease, box-shadow 200ms ease;
  position: relative;
  overflow: hidden;
}

.home-redesign .principle:hover {
  transform: translateY(-3px);
  box-shadow: var(--rd-tile-shadow-hover);
}

.home-redesign .principle .num {
  font-family: var(--rd-font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--rd-accent);
  background: var(--rd-accent-soft);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 0.85rem;
}

.home-redesign .principle h4 {
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.005em;
}

.home-redesign .principle p {
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--rd-text-muted);
  margin: 0;
}

/* Subtle accent shape inside the tiles for visual interest */
.home-redesign .principle:nth-child(1) { background-image: radial-gradient(120px 80px at 100% 0%, rgba(232, 148, 106, 0.20), transparent 60%); }
.home-redesign .principle:nth-child(2) { background-image: radial-gradient(120px 80px at 100% 0%, rgba(123, 107, 191, 0.22), transparent 60%); }
.home-redesign .principle:nth-child(3) { background-image: radial-gradient(120px 80px at 100% 0%, rgba(1, 105, 111, 0.18), transparent 60%); }
.home-redesign .principle:nth-child(4) { background-image: radial-gradient(120px 80px at 100% 0%, rgba(232, 148, 106, 0.20), transparent 60%); }

/* ----- Module cards (the main grid) ----- */

.home-redesign .module-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.home-redesign .module-card {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-md);
  padding: 1.75rem 1.75rem 1.5rem;
  text-decoration: none;
  color: var(--rd-text);
  box-shadow: var(--rd-tile-shadow);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: transform 220ms ease, box-shadow 220ms ease;
  position: relative;
  overflow: hidden;
}

.home-redesign .module-card:hover {
  transform: translateY(-4px) rotate(-0.25deg);
  box-shadow: var(--rd-tile-shadow-hover);
}

.home-redesign .module-card .num {
  font-family: var(--rd-font-display);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rd-accent-deep);
}

.home-redesign .module-card h3 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: 1.45rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--rd-text);
}

.home-redesign .module-card .desc {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--rd-text-muted);
  margin: 0;
  flex-grow: 1;
}

.home-redesign .module-card .meta {
  display: flex;
  gap: 1rem;
  font-family: var(--rd-font-display);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--rd-text-muted);
  padding-top: 0.5rem;
  border-top: 1px solid rgba(31, 27, 48, 0.06);
  flex-wrap: wrap;
}

.home-redesign .module-card .arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--rd-accent-deep);
  padding-top: 0.25rem;
  transition: gap 200ms ease;
}

.home-redesign .module-card:hover .arrow {
  gap: 0.65rem;
}

/* Per-card decorative gradient corner */
.home-redesign .module-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: radial-gradient(80px 80px at 100% 0%, rgba(123, 107, 191, 0.22), transparent 70%);
  pointer-events: none;
  border-radius: 0 var(--rd-radius-md) 0 0;
}

.home-redesign .module-card:nth-child(even)::before {
  background: radial-gradient(80px 80px at 100% 0%, rgba(232, 148, 106, 0.22), transparent 70%);
}

.home-redesign .module-card:nth-child(3n)::before {
  background: radial-gradient(80px 80px at 100% 0%, rgba(1, 105, 111, 0.18), transparent 70%);
}

/* ----- Final artifact + how it works tables ----- */

.home-redesign .tbl-wrap {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-md);
  box-shadow: var(--rd-tile-shadow);
  overflow: hidden;
  padding: 0.5rem;
}

.home-redesign .tbl-wrap table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-family: var(--rd-font-body);
}

.home-redesign .tbl-wrap th,
.home-redesign .tbl-wrap td {
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.95rem;
  line-height: 1.5;
  border-bottom: 1px solid rgba(31, 27, 48, 0.06);
}

.home-redesign .tbl-wrap thead th {
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rd-accent-deep);
  background: var(--rd-accent-soft);
}

.home-redesign .tbl-wrap tbody tr:last-child td {
  border-bottom: none;
}

.home-redesign .tbl-wrap tbody tr:hover {
  background: rgba(255, 255, 255, 0.5);
}

.home-redesign .tbl-wrap code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  background: var(--rd-teal-soft);
  color: var(--rd-teal);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

/* ----- Accessibility section (just a list) ----- */

.home-redesign .section ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.home-redesign .section ul li {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-sm);
  padding: 0.9rem 1.25rem;
  box-shadow: 0 2px 6px rgba(31, 27, 48, 0.04);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--rd-text);
}

/* ----- Footer ----- */

.home-redesign .site-foot {
  margin-top: 5rem;
  padding: 2rem 0;
  border-top: 1px solid rgba(31, 27, 48, 0.08);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--rd-font-display);
  font-size: 0.85rem;
  color: var(--rd-text-muted);
}

/* ----- Mobile bar in redesigned palette ----- */

.home-redesign .mobile-bar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31, 27, 48, 0.06);
}

/* ----- Responsive ----- */

@media (max-width: 900px) {
  .home-redesign .landing-hero {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .home-redesign .hero-art {
    margin-top: 1.5rem;
  }
  .home-redesign .section {
    margin: 3rem 0;
  }
}

@media (max-width: 600px) {
  .home-redesign .content {
    padding: 1.5rem 1rem 4rem;
  }
  .home-redesign .module-card,
  .home-redesign .principle {
    padding: 1.25rem;
  }
  .home-redesign .module-card:hover {
    transform: translateY(-2px);
  }
}

/* =====================================================================
   Module landing pages (module-1.html … module-6.html)
   Reuses .home-redesign tokens. Targets the .module-hero hero, the
   .meta-grid info pills, the outcomes card, the subsection grid, and
   the bottom "Start here" completion banner.
   ===================================================================== */

/* Module hero : reuses the same gradient, but the page-level hero is
   single-column (no preview tile) so it gets a calmer treatment than the
   course homepage hero. */
.home-redesign .module-hero {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-lg);
  padding: clamp(1.75rem, 3vw, 2.5rem) clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--rd-tile-shadow);
  margin-top: 1rem;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}

.home-redesign .module-hero::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(220px 220px at 100% 0%, rgba(123, 107, 191, 0.22), transparent 70%);
  pointer-events: none;
}

.home-redesign .module-hero .eyebrow {
  display: inline-block;
  font-family: var(--rd-font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rd-accent-deep);
  background: var(--rd-accent-soft);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.home-redesign .module-hero h1 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
  color: var(--rd-text);
}

.home-redesign .module-hero h1 em {
  font-style: italic;
  color: var(--rd-accent);
}

.home-redesign .module-hero .lede {
  font-size: 1.08rem;
  line-height: 1.55;
  color: var(--rd-text-muted);
  max-width: 44rem;
  margin: 0 0 1.75rem;
}

/* Meta grid : Time / Badge / Device / Artifact pills */
.home-redesign .meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.home-redesign .meta-grid > div {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(31, 27, 48, 0.06);
  border-radius: var(--rd-radius-sm);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.home-redesign .meta-grid .label {
  font-family: var(--rd-font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rd-text-muted);
}

.home-redesign .meta-grid .value {
  font-family: var(--rd-font-display);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--rd-text);
  line-height: 1.3;
}

/* Outcomes card ("By the end of Module N, you will be able to:") */
.home-redesign .card[aria-labelledby^="outcomes-"] {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-md);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--rd-tile-shadow);
  margin-bottom: 2.5rem;
}

.home-redesign .card[aria-labelledby^="outcomes-"] h3 {
  font-family: var(--rd-font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rd-accent-deep);
  margin: 0 0 1rem;
}

.home-redesign .card[aria-labelledby^="outcomes-"] ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.home-redesign .card[aria-labelledby^="outcomes-"] ul li {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0 0 0 1.5rem;
  position: relative;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--rd-text);
}

.home-redesign .card[aria-labelledby^="outcomes-"] ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rd-accent);
}

/* Subsection list section */
.home-redesign .subsection-list h2 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: clamp(1.45rem, 2.5vw, 1.85rem);
  letter-spacing: -0.01em;
  margin: 0 0 1.5rem;
}

.home-redesign .subsection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.home-redesign .subsection-card {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-md);
  padding: 1.25rem 1.4rem;
  text-decoration: none;
  color: var(--rd-text);
  box-shadow: var(--rd-tile-shadow);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 220ms ease, box-shadow 220ms ease;
  position: relative;
  overflow: hidden;
}

.home-redesign .subsection-card:hover {
  transform: translateY(-3px) rotate(-0.2deg);
  box-shadow: var(--rd-tile-shadow-hover);
}

.home-redesign .subsection-card .num {
  font-family: var(--rd-font-display);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--rd-accent-deep);
  background: var(--rd-accent-soft);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  align-self: flex-start;
  margin-bottom: 0.25rem;
}

.home-redesign .subsection-card h3 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: 1.2rem;
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 0;
  color: var(--rd-text);
}

.home-redesign .subsection-card .meta {
  font-family: var(--rd-font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--rd-text-muted);
  margin: 0;
}

.home-redesign .subsection-card .arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--rd-accent-deep);
  margin-top: auto;
  padding-top: 0.5rem;
  transition: gap 200ms ease;
}

.home-redesign .subsection-card:hover .arrow {
  gap: 0.65rem;
}

/* Rotating color blob in top-right corner, like the homepage module cards */
.home-redesign .subsection-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 60px;
  height: 60px;
  background: radial-gradient(60px 60px at 100% 0%, rgba(123, 107, 191, 0.18), transparent 70%);
  pointer-events: none;
}

.home-redesign .subsection-card:nth-child(2)::before {
  background: radial-gradient(60px 60px at 100% 0%, rgba(232, 148, 106, 0.22), transparent 70%);
}

.home-redesign .subsection-card:nth-child(3)::before {
  background: radial-gradient(60px 60px at 100% 0%, rgba(1, 105, 111, 0.18), transparent 70%);
}

.home-redesign .subsection-card:nth-child(4)::before {
  background: radial-gradient(60px 60px at 100% 0%, rgba(232, 148, 106, 0.18), transparent 70%);
}

.home-redesign .subsection-card:nth-child(5)::before {
  background: radial-gradient(60px 60px at 100% 0%, rgba(123, 107, 191, 0.20), transparent 70%);
}

/* Completion banner ("Start here" / "After Module N") */
.home-redesign .completion {
  background: var(--rd-tile-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--rd-tile-border);
  border-radius: var(--rd-radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--rd-tile-shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.home-redesign .completion .text {
  font-family: var(--rd-font-body);
  font-size: 1rem;
  color: var(--rd-text);
  line-height: 1.5;
}

.home-redesign .completion .text strong {
  color: var(--rd-accent-deep);
  font-weight: 700;
}

@media (max-width: 600px) {
  .home-redesign .subsection-card {
    padding: 1rem 1.2rem;
  }
  .home-redesign .module-hero {
    padding: 1.5rem 1.25rem;
  }
  .home-redesign .completion {
    flex-direction: column;
    align-items: stretch;
  }
}


/* =====================================================================
   Lesson page treatment (.lesson-redesign on body)
   ---------------------------------------------------------------------
   Applied to the 30 subsection pages module-N-P.html. Goal:
   - Sidebar matches the homepage/landings exactly (consistent navigation)
   - Backdrop is mostly white with a soft peach wash : palette-consistent
     with the new color scheme, but calm enough that dense code blocks
     and reading content scan cleanly
   - Existing reading cards, analogy cards, code blocks, quizzes stay
     structurally intact; just a light palette nudge so they tie to
     the rest of the site
   ===================================================================== */

/* Re-declare design tokens so .lesson-redesign can use them too */
.lesson-redesign {
  --rd-bg-peach: #F8E2D2;
  --rd-bg-lavender: #E0DAF5;
  --rd-bg-teal: #D2E9EA;
  --rd-bg-white: #FFFFFF;

  --rd-accent: #7B6BBF;
  --rd-accent-deep: #5B4DA0;
  --rd-accent-soft: rgba(123, 107, 191, 0.12);

  --rd-teal: #01696F;
  --rd-teal-soft: rgba(1, 105, 111, 0.08);
  --rd-coral: #E8946A;

  --rd-text: #1F1B30;
  --rd-text-muted: #6B6878;

  --rd-tile-bg: rgba(255, 255, 255, 0.78);
  --rd-tile-border: rgba(255, 255, 255, 0.85);
  --rd-tile-shadow:
    0 1px 2px rgba(31, 27, 48, 0.04),
    0 6px 16px rgba(31, 27, 48, 0.08),
    0 24px 48px rgba(31, 27, 48, 0.06);

  --rd-radius-sm: 14px;
  --rd-radius-md: 22px;
  --rd-radius-lg: 32px;

  --rd-font-display: 'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
  --rd-font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --rd-font-serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
}

/* Lesson-page backdrop: mostly white with a single soft peach radial in
   the top right corner. Calmer than the homepage gradient but still
   reads as part of the new palette. */
.lesson-redesign .main {
  background:
    radial-gradient(900px 600px at 95% -5%, rgba(248, 226, 210, 0.55), transparent 60%),
    radial-gradient(700px 500px at 5% 30%, rgba(224, 218, 245, 0.30), transparent 65%),
    linear-gradient(180deg, #FDFCFA 0%, #FAF6F1 100%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  min-height: 100vh;
}

.lesson-redesign .content {
  font-family: var(--rd-font-body);
  color: var(--rd-text);
}

/* ----- Shared sidebar treatment (applies to both .home-redesign and .lesson-redesign) -----
   Identical to the rules above for .home-redesign, just doubled up so
   the same look applies on lesson pages. This is the fix for the
   inconsistency the user reported. */
.lesson-redesign .sidebar {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid rgba(31, 27, 48, 0.06);
}

.lesson-redesign .sidebar .brand-name {
  font-family: var(--rd-font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.lesson-redesign .nav-module-head {
  color: var(--rd-text);
  font-family: var(--rd-font-body);
  font-weight: 500;
}

.lesson-redesign .nav-module-head.is-active {
  background: var(--rd-accent-soft);
  color: var(--rd-accent-deep);
}

.lesson-redesign .nav-module-head .badge-mini {
  background: rgba(123, 107, 191, 0.10);
  color: var(--rd-accent-deep);
}

.lesson-redesign .progress-bar > span {
  background: linear-gradient(90deg, var(--rd-teal), var(--rd-accent));
}

.lesson-redesign .sidebar-foot {
  font-family: var(--rd-font-body);
  color: var(--rd-text-muted);
}

/* Active subsection link in the sidebar gets the same lavender tint */
.lesson-redesign .nav-pages a.is-active {
  color: var(--rd-accent-deep);
  font-weight: 600;
}

/* ----- Mobile bar in redesigned palette ----- */
.lesson-redesign .mobile-bar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31, 27, 48, 0.06);
}

/* ----- Subsection breadcrumb (top of every lesson page) -----
   Keep it simple : restyle to match the new palette */
.lesson-redesign .subsection-breadcrumb {
  font-family: var(--rd-font-display);
  font-size: 0.85rem;
  color: var(--rd-text-muted);
  margin-bottom: 1rem;
}

.lesson-redesign .subsection-breadcrumb a {
  color: var(--rd-accent-deep);
  text-decoration: none;
  font-weight: 500;
}

.lesson-redesign .subsection-breadcrumb a:hover {
  text-decoration: underline;
}

.lesson-redesign .subsection-breadcrumb .sep {
  color: var(--rd-text-muted);
  margin: 0 0.4rem;
}

/* ----- Subsection head (the title + time on a lesson page) ----- */
.lesson-redesign .subsection-head .eyebrow {
  display: inline-block;
  font-family: var(--rd-font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rd-accent-deep);
  background: var(--rd-accent-soft);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.lesson-redesign .subsection-head h1 {
  font-family: var(--rd-font-serif);
  font-weight: 500;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--rd-text);
  margin: 0 0 0.5rem;
}

.lesson-redesign .subsection-head .meta {
  font-family: var(--rd-font-display);
  font-size: 0.9rem;
  color: var(--rd-text-muted);
  margin: 0 0 1.5rem;
}

/* ----- Reading card on lesson pages -----
   Existing styles.css already styles .reading-card. We only need to nudge
   the palette: switch the teal accent bar to a peach-tinted left bar so it
   ties to the new color scheme. */
.lesson-redesign .reading-card {
  background: linear-gradient(180deg, rgba(255, 251, 246, 0.95), rgba(252, 244, 234, 0.90));
  border-left: 4px solid var(--rd-coral);
  box-shadow: 0 1px 3px rgba(31, 27, 48, 0.04), 0 4px 12px rgba(31, 27, 48, 0.05);
  border-radius: var(--rd-radius-md);
}

.lesson-redesign .reading-eyebrow {
  color: var(--rd-coral);
}

.lesson-redesign .reading-card code {
  background: rgba(232, 148, 106, 0.14);
  color: #8B4513;
}

.lesson-redesign .reading-card pre {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(232, 148, 106, 0.25);
}

.lesson-redesign .reading-card pre code {
  background: transparent;
  color: inherit;
}

.lesson-redesign .reading-action {
  background: rgba(255, 255, 255, 0.7);
  border: 1px dashed rgba(232, 148, 106, 0.35);
}

.lesson-redesign .reading-action h4 {
  color: var(--rd-coral);
}

/* ----- Analogy card : keep its amber palette (already in palette family) ----- */
/* No changes needed : the existing styles.css .analogy-card uses a warm
   tan/amber that already harmonizes with the new peach palette. */

/* ----- Plain content cards on lesson pages ----- */
.lesson-redesign .card {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(31, 27, 48, 0.06);
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04), 0 4px 10px rgba(31, 27, 48, 0.04);
  border-radius: var(--rd-radius-sm);
}

.lesson-redesign .card h3,
.lesson-redesign .card h4 {
  font-family: var(--rd-font-display);
  color: var(--rd-text);
}

/* ----- Body typography on lesson pages : soft modernization ----- */
.lesson-redesign .content p,
.lesson-redesign .content li {
  color: var(--rd-text);
  font-family: var(--rd-font-body);
}

.lesson-redesign .content h2,
.lesson-redesign .content h3,
.lesson-redesign .content h4 {
  font-family: var(--rd-font-serif);
  color: var(--rd-text);
  font-weight: 500;
  letter-spacing: -0.005em;
}

/* ----- Knowledge check (quiz) card ----- */
.lesson-redesign .quiz {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(31, 27, 48, 0.06);
  border-radius: var(--rd-radius-sm);
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04), 0 4px 10px rgba(31, 27, 48, 0.04);
}

.lesson-redesign .quiz-tag {
  color: var(--rd-accent-deep);
  background: var(--rd-accent-soft);
}

.lesson-redesign .btn.btn-primary {
  background: var(--rd-text);
  color: #FFFFFF;
  border: none;
}

/* ----- Badge earn banner : keep teal but soften ----- */
.lesson-redesign .badge-earn {
  background: linear-gradient(135deg, #01696F 0%, #0C4E54 100%);
  border-radius: var(--rd-radius-md);
  box-shadow: 0 4px 16px rgba(1, 105, 111, 0.25);
}

/* ----- Callout boxes (tip, key) ----- */
.lesson-redesign .callout {
  border-radius: var(--rd-radius-sm);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04);
}

/* ----- Bottom page-nav (prev/next) ----- */
.lesson-redesign .page-nav {
  display: flex;
  gap: 0.75rem;
  margin: 2.5rem 0 1.5rem;
}

.lesson-redesign .page-nav-link {
  flex: 1;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(31, 27, 48, 0.06);
  border-radius: var(--rd-radius-sm);
  padding: 0.85rem 1.1rem;
  text-decoration: none;
  color: var(--rd-text);
  font-family: var(--rd-font-body);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04), 0 4px 10px rgba(31, 27, 48, 0.04);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.lesson-redesign .page-nav-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(31, 27, 48, 0.06), 0 8px 16px rgba(31, 27, 48, 0.08);
}

.lesson-redesign .page-nav-link.next {
  justify-content: flex-end;
  text-align: right;
}

.lesson-redesign .page-nav-eyebrow {
  display: block;
  font-family: var(--rd-font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rd-text-muted);
  margin-bottom: 0.15rem;
}

.lesson-redesign .page-nav-title {
  display: block;
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--rd-text);
  line-height: 1.3;
}

/* ----- Sources line at the bottom ----- */
.lesson-redesign .sources {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(31, 27, 48, 0.05);
  border-radius: var(--rd-radius-sm);
  padding: 1rem 1.25rem;
  font-family: var(--rd-font-body);
  font-size: 0.9rem;
  color: var(--rd-text-muted);
  line-height: 1.55;
  margin: 1.5rem 0;
}

.lesson-redesign .sources a {
  color: var(--rd-accent-deep);
  text-decoration: underline;
}

/* ----- Site footer ----- */
.lesson-redesign .site-foot {
  font-family: var(--rd-font-display);
  color: var(--rd-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(31, 27, 48, 0.08);
  padding-top: 1.5rem;
}

.lesson-redesign .site-foot a {
  color: var(--rd-accent-deep);
}

/* ----- Action slider/completion strip wrapper ----- */
.lesson-redesign .action-completion,
.lesson-redesign .completion.action-completion {
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--rd-radius-sm);
  border: 1px dashed rgba(232, 148, 106, 0.4);
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04);
}

/* ----- Tables on lesson pages ----- */
.lesson-redesign .tbl-wrap {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(31, 27, 48, 0.06);
  border-radius: var(--rd-radius-sm);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(31, 27, 48, 0.04), 0 4px 10px rgba(31, 27, 48, 0.04);
  margin: 1rem 0;
}

.lesson-redesign .tbl-wrap thead th {
  background: var(--rd-accent-soft);
  color: var(--rd-accent-deep);
  font-family: var(--rd-font-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 600px) {
  .lesson-redesign .page-nav {
    flex-direction: column;
  }
}