:root {
  color-scheme: light;
  --bg: #fdf6ee;
  --bg-2: #f3f8ff;
  --ink: #1c1d21;
  --muted: #606774;
  --accent: #e05c3a;
  --accent-soft: #fde5db;
  --card: #ffffff;
  --border: #e6e0d8;
  --shadow: 0 18px 50px rgba(21, 24, 36, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 20%, #fffaf2, var(--bg)),
    radial-gradient(circle at 90% 0%, #eef6ff, var(--bg-2));
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

h1,
h2,
h3 {
  font-family: "Fraunces", "Georgia", serif;
}

p {
  margin: 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: center;
}

.eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(2.4rem, 2.1rem + 2vw, 3.4rem);
  margin: 0 0 16px;
}

.subhead {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.hero-pill {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.hero-cards {
  display: grid;
  gap: 16px;
}

.stat-card {
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.stat-value {
  font-size: 1.35rem;
  margin: 8px 0;
}

.stat-note {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.5;
}

.source-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.source-link:hover {
  text-decoration: underline;
}

.content-page {
  max-width: 980px;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.content-logo {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
}

.content-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.content-nav a {
  text-decoration: none;
  color: #1d6d5f;
  border: 1px solid #b7ddd5;
  border-radius: 999px;
  padding: 6px 11px;
  font-size: 0.88rem;
  font-weight: 600;
  background: #edf7f4;
}

.content-nav a:hover {
  background: #e0f1ec;
}

.content-main {
  display: grid;
  gap: 14px;
}

.content-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: 0 8px 20px rgba(20, 24, 36, 0.06);
}

.content-card h1 {
  margin: 0 0 10px;
  font-size: clamp(1.65rem, 1.45rem + 1vw, 2rem);
}

.content-card p + p {
  margin-top: 8px;
}

.content-timestamp {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--muted);
}

.level-links-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
}

.level-link-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--ink);
  background: #fffaf4;
  font-weight: 600;
}

.level-link-card:hover {
  background: #fff2e5;
}

.level-book-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 14px;
}

.level-book-item h2 {
  margin: 0;
  font-size: 1.05rem;
}

.level-book-author {
  margin-top: 4px;
  color: #273041;
  font-weight: 600;
}

.level-book-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.level-book-actions {
  margin-top: 10px;
}

.level-book-actions .amazon-link {
  justify-content: flex-start;
}

.level-book-actions .amazon-link img {
  width: clamp(120px, 28vw, 138px);
}

.answer-card {
  border-color: #e6d7bb;
  background: #fff8ee;
}

.quick-table {
  margin-top: 14px;
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.quick-table th,
.quick-table td {
  border: 1px solid #e6ded0;
  padding: 9px 10px;
  text-align: left;
  vertical-align: top;
}

.quick-table thead th {
  background: #f2f7ff;
}

.section-links,
.guide-book-list,
.related-links,
.topics-link-list {
  margin: 12px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.section-links li,
.guide-book-list li,
.related-links li,
.topics-link-list li {
  line-height: 1.45;
}

.topics-link-list p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fffdf8;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1.03rem;
}

.filters {
  position: sticky;
  top: 12px;
  margin: 32px 0 28px;
  padding: 14px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  will-change: transform, opacity;
  transition: opacity 0.3s ease, transform 0.45s cubic-bezier(0.2, 0.7, 0.2, 1);
  overflow: visible;
  max-height: none;
  z-index: 20;
}

.filters.collapsed {
  padding: 14px;
}

.filters.no-results {
  padding: 14px;
}

.filters-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 14px;
  padding: 12px 14px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}

.filters-toggle:focus-visible {
  outline: 2px solid rgba(224, 92, 58, 0.35);
  outline-offset: 2px;
}

.filters-toggle-copy {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.filters-toggle-title {
  font-size: 0.96rem;
  font-weight: 700;
}

.filters-toggle-summary {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.35;
}

.filters-toggle-action {
  font-size: 0.9rem;
  font-weight: 700;
  color: #1d6d5f;
  white-space: nowrap;
}

.filters-inner {
  display: grid;
  gap: 18px;
  margin-top: 14px;
}

.filters.collapsed .filters-inner {
  display: none;
}

.search-block label {
  font-weight: 600;
  display: block;
  margin-bottom: 10px;
}

.search-field {
  display: flex;
  gap: 10px;
}

.search-field input {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
}

.search-field input:focus {
  outline: 2px solid rgba(224, 92, 58, 0.35);
  border-color: var(--accent);
}

.location-field {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.location-field input {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 10px 14px;
  font-size: 0.95rem;
  font-family: inherit;
}

.location-field input:focus {
  outline: 2px solid rgba(29, 109, 95, 0.3);
  border-color: #1d6d5f;
}

.clear-btn {
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
}

.clear-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.location-btn {
  border: none;
  background: #1d6d5f;
  color: #fff;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.location-btn.ghost {
  background: #edf7f4;
  color: #1d6d5f;
  border: 1px solid #b7ddd5;
}

.search-hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.search-hint.secondary {
  margin-top: 4px;
  font-size: 0.85rem;
}

.inline-link {
  color: #1d6d5f;
  text-decoration: none;
  font-weight: 600;
}

.inline-link:hover {
  text-decoration: underline;
}

.levels-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-weight: 600;
}

.results-summary {
  color: var(--muted);
  font-size: 0.9rem;
}

.levels-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.chip {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
}

.chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.chip:focus {
  outline: 2px solid rgba(224, 92, 58, 0.35);
  outline-offset: 2px;
}

.affiliate-disclosure {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #f3c891;
  background: #fff7ec;
  color: #4a3a27;
  font-size: 0.95rem;
  line-height: 1.45;
}

.affiliate-disclosure p {
  margin: 0;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}

.book-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: 0 10px 24px rgba(20, 24, 36, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  min-height: 220px;
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(20, 24, 36, 0.12);
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.level-pill {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 6px 10px;
  font-weight: 600;
  font-size: 0.75rem;
}

.category-pill {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
}

.card-title {
  font-size: 1.1rem;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-actions {
  margin-top: auto;
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.library-link {
  min-height: 36px;
  padding: 0 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: #e6f3f0;
  border: 1px solid #b8d7d0;
  color: #1d6d5f;
  box-shadow: 0 6px 16px rgba(17, 19, 23, 0.1);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
}

.library-link img {
  width: 16px;
  height: 16px;
  display: block;
  border-radius: 4px;
}

.library-link .library-label {
  white-space: nowrap;
}

.library-link:hover {
  background: #dceee9;
  border-color: #a8cfc6;
}

.amazon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  text-decoration: none;
}

.amazon-link img {
  width: clamp(104px, 30vw, 122px);
  height: auto;
  display: block;
}

.amazon-link:focus,
.library-link:focus {
  outline: 2px solid rgba(224, 92, 58, 0.35);
  outline-offset: 2px;
}

.empty-card {
  grid-column: 1 / -1;
  padding: 32px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  background: rgba(255, 255, 255, 0.7);
  text-align: center;
}

.empty-card h3 {
  margin: 0 0 12px;
}

.noscript {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  margin-top: 48px;
  color: var(--muted);
  font-size: 0.9rem;
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: #1d6d5f;
  text-decoration: none;
  font-weight: 600;
}

.footer-links a:hover {
  text-decoration: underline;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-cards {
    grid-template-columns: 1fr;
  }

  .content-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .content-nav {
    width: 100%;
  }
}

@media (max-width: 600px) {
  .page {
    padding: 28px 18px 64px;
  }

  .filters {
    top: 6px;
  }

  .search-field {
    flex-direction: column;
  }

  .location-field {
    flex-direction: column;
  }

  .clear-btn {
    width: 100%;
  }

  .location-btn {
    width: 100%;
  }

  .level-links-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}