/* =========================================================
   SkillrHub curriculum pages
   SEO topic guides, unit matrices, ad-safe layout and future
   login/payment-friendly metadata hooks.
   ========================================================= */

:root {
  --skillr-blue: #1a3a72;
  --skillr-blue-2: #2457d6;
  --skillr-ink: #1f2937;
  --skillr-muted: #5b6472;
  --skillr-line: #dbe5f2;
  --skillr-panel: #ffffff;
  --skillr-soft: #f5f8ff;
  --skillr-green: #13795b;
  --skillr-gold: #9a6700;
}

.curriculum-shell {
  background:
    radial-gradient(circle at top left, rgba(36, 87, 214, 0.08), transparent 32rem),
    linear-gradient(180deg, #f6f9ff 0%, #eef4fb 100%);
}

.curriculum-page {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
}

.curriculum-hero,
.curriculum-panel,
.curriculum-topic-section,
.curriculum-unit-card {
  border: 1px solid var(--skillr-line);
  border-radius: 20px;
  background: var(--skillr-panel);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.06);
}

.curriculum-hero {
  margin: 18px 0 22px;
  padding: clamp(22px, 4vw, 42px);
}

.curriculum-eyebrow,
.curriculum-chip,
.curriculum-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.curriculum-eyebrow {
  margin: 0 0 10px;
  color: var(--skillr-blue-2);
  font-size: 0.78rem;
}

.curriculum-chip,
.curriculum-badge {
  padding: 5px 10px;
  border: 1px solid #c9d8fb;
  background: #eef4ff;
  color: var(--skillr-blue);
  font-size: 0.72rem;
}

.curriculum-hero h1 {
  max-width: 980px;
  margin-bottom: 14px;
}

.curriculum-hero__lead {
  max-width: 900px;
  color: #334155;
  font-size: clamp(1.05rem, 2vw, 1.22rem);
}

.curriculum-actions,
.curriculum-link-row,
.unit-action-row,
.topic-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.curriculum-button,
.unit-action-row a,
.topic-action-row a,
.report-issue-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 14px;
  border: 1px solid #c9d8fb;
  border-radius: 999px;
  background: #fff;
  color: var(--skillr-blue);
  font-weight: 800;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.curriculum-button.primary,
.unit-action-row a.primary,
.topic-action-row a.primary {
  border-color: var(--skillr-blue);
  background: var(--skillr-blue);
  color: #fff;
}

.curriculum-button:hover,
.unit-action-row a:hover,
.topic-action-row a:hover,
.report-issue-button:hover {
  border-color: var(--skillr-blue-2);
  background: #eef4ff;
  color: var(--skillr-blue-2);
  text-decoration: none;
  transform: translateY(-1px);
}

.curriculum-button.primary:hover,
.unit-action-row a.primary:hover,
.topic-action-row a.primary:hover {
  background: var(--skillr-blue-2);
  color: #fff;
}

.topic-action-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  max-width: 820px;
}

.topic-action-row a {
  width: 100%;
}

.curriculum-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
  gap: 22px;
  align-items: start;
}

.curriculum-sidebar {
  position: sticky;
  top: 16px;
}

.curriculum-panel,
.curriculum-topic-section {
  margin: 18px 0;
  padding: clamp(18px, 3vw, 28px);
}

.subject-tile-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.subject-tile {
  display: flex;
  flex-direction: column;
  min-height: 180px;
  padding: 20px;
  border: 1px solid var(--skillr-line);
  border-radius: 18px;
  background: linear-gradient(135deg, #ffffff 0%, #f4f8ff 100%);
  color: var(--skillr-ink);
  text-decoration: none;
}

.subject-tile .curriculum-button {
  margin-top: auto;
  align-self: flex-start;
}

.subject-tile:hover {
  border-color: var(--skillr-blue-2);
  text-decoration: none;
}

.subject-tile h2,
.subject-tile h3,
.curriculum-unit-card h3 {
  margin-top: 8px;
  color: var(--skillr-blue);
}

.unit-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.curriculum-unit-card {
  display: flex;
  min-height: 260px;
  padding: 18px;
  flex-direction: column;
}

.curriculum-unit-card p {
  color: #364152;
}

.unit-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 10px 0;
}

.unit-action-row {
  margin-top: auto;
}

.unit-action-row a {
  flex: 1 1 110px;
  min-height: 34px;
  padding: 7px 10px;
  font-size: 0.9rem;
}

.curriculum-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--skillr-line);
  border-radius: 16px;
}

.curriculum-map-table,
.year-nav-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: #fff;
}

.curriculum-map-table th,
.curriculum-map-table td,
.year-nav-table th,
.year-nav-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--skillr-line);
  text-align: left;
  vertical-align: top;
}

.curriculum-map-table th,
.year-nav-table th {
  background: #f1f6ff;
  color: var(--skillr-blue);
}

.curriculum-keyword-list,
.curriculum-check-list,
.curriculum-source-list,
.curriculum-related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 8px 20px;
}

.curriculum-check-list li::marker {
  color: var(--skillr-green);
}

.curriculum-note {
  padding: 12px 14px;
  border: 1px solid #f0d992;
  border-radius: 14px;
  background: #fff9e6;
  color: #513b00;
}

.curriculum-ad-slot {
  display: none !important;
}

.page-ad-slot,
[aria-label="Sponsored content"] {
  display: none !important;
}

.curriculum-ad-slot.inline {
  min-height: 140px;
}

.curriculum-ad-slot.sidebar {
  min-height: 250px;
}

.curriculum-ad-label {
  margin: 0 0 8px;
  color: var(--skillr-muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.floating-learning-links {
  display: none;
}

.curriculum-live-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 5px 10px;
  border-radius: 999px;
  background: #e7f8f0;
  color: var(--skillr-green);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.floating-learning-links a,
.floating-learning-links button {
  min-width: 132px;
  padding: 9px 12px;
  border: 1px solid #c9d8fb;
  border-radius: 999px;
  background: #fff;
  color: var(--skillr-blue);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.12);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.floating-learning-links a:hover,
.floating-learning-links button:hover {
  background: #eef4ff;
  text-decoration: none;
}

.report-issue-button {
  border-color: #f0c36d;
  background: #fff8e5;
  color: #6b4a00;
  cursor: pointer;
}

.curriculum-footer-meta {
  margin-top: 24px;
  color: var(--skillr-muted);
  font-size: 0.92rem;
}

@media (max-width: 920px) {
  .curriculum-layout,
  .subject-tile-grid {
    grid-template-columns: 1fr;
  }

  .curriculum-sidebar {
    position: static;
  }

  .floating-learning-links {
    right: 10px;
    bottom: 10px;
  }

  .topic-action-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .curriculum-page {
    padding: 12px;
  }

  .curriculum-hero,
  .curriculum-panel,
  .curriculum-topic-section,
  .curriculum-unit-card {
    border-radius: 14px;
  }

  .floating-learning-links {
    left: 10px;
    right: 10px;
    flex-direction: row;
    overflow-x: auto;
  }

  .floating-learning-links a,
  .floating-learning-links button {
    min-width: max-content;
    white-space: nowrap;
  }

  .topic-action-row {
    grid-template-columns: 1fr;
  }
}

@media print {
  .main-nav,
  .breadcrumb,
  .curriculum-ad-slot,
  .floating-learning-links,
  .report-issue-button,
  .topic-action-row {
    display: none !important;
  }

  .curriculum-page {
    max-width: none;
    padding: 0;
  }

  .curriculum-hero,
  .curriculum-panel,
  .curriculum-topic-section {
    box-shadow: none;
    break-inside: avoid;
  }
}