/* Little World Reader — Site Styles */
:root {
  color-scheme: light;
  --background: #ffffff;
  --surface: #f8f9ff;
  --surface-alt: #f2f5ff;
  --surface-card: #ffffff;
  --accent: #3a5dd9;
  --accent-dark: #2c47a8;
  --accent-light: #e5ebff;
  --text: #212436;
  --text-muted: #50556b;
  --border: #d7dcf0;
  --shadow-soft: 0 18px 30px rgba(31, 43, 90, 0.08);
  --shadow-card: 0 14px 32px rgba(20, 33, 82, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1200px;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--background);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--accent-dark);
  text-decoration: underline;
}

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(115, 131, 190, 0.15);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 24px;
  border-radius: 50%;
  background: var(--accent-light);
}

.brand-text {
  display: flex;
  flex-direction: column;
  font-size: 14px;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 17px;
  letter-spacing: 0.03em;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-line {
  width: 24px;
  height: 2px;
  background: var(--text);
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 15px;
  font-weight: 500;
}

.nav-list a {
  padding: 10px 12px;
  border-radius: 999px;
}

.nav-list a:hover,
.nav-list a:focus {
  background: var(--accent-light);
  text-decoration: none;
}

.cta-ghost {
  border-radius: 999px;
  border: 1px solid var(--accent);
  padding: 10px 18px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.cta-ghost:hover,
.cta-ghost:focus {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

.hero {
  padding: 96px 0;
  background: linear-gradient(140deg, #f8f9ff, #ffffff 45%, #f3f6ff 80%);
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  margin-top: 12px;
  font-size: clamp(2.4rem, 4vw, 3rem);
  line-height: 1.15;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 28px 0 20px;
}

.cta-primary,
.cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-soft);
}

.cta-primary:hover,
.cta-primary:focus {
  transform: translateY(-1px);
  text-decoration: none;
  box-shadow: var(--shadow-card);
}

.cta-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
}

.cta-secondary:hover,
.cta-secondary:focus {
  transform: translateY(-1px);
  border-color: var(--accent);
  text-decoration: none;
}

.hero-highlights {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: grid;
  gap: 8px;
  color: var(--text-muted);
  font-size: 15px;
}

.hero-highlights li::before {
  content: "⭐";
  margin-right: 8px;
}

.hero-figure {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
}

.section {
  padding: 80px 0;
}

.section-heading {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-heading h2 {
  margin: 8px 0 16px;
  font-size: clamp(1.9rem, 3vw, 2.4rem);
}

.section-heading p {
  color: var(--text-muted);
  margin: 0;
}

.feature-grid,
.book-grid,
.resource-grid,
.testimonials-grid,
.contact-grid,
.footer-grid {
  display: grid;
  gap: 32px;
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card {
  padding: 32px 28px;
  background: var(--surface-card);
  border-radius: var(--radius-md);
  border: 1px solid rgba(220, 225, 247, 0.7);
  box-shadow: var(--shadow-soft);
}

.feature-card h3 {
  margin-top: 0;
  font-size: 1.3rem;
}

.series .book-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.book-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(216, 223, 245, 0.6);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.book-card:hover,
.book-card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.book-card figure {
  margin: 0;
  padding: 28px;
  background: linear-gradient(180deg, #f5f7ff 0%, #ffffff 85%);
}

.book-body {
  padding: 24px 24px 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.book-body h3 {
  margin: 0;
  font-size: 1.2rem;
}

.book-body p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.book-link {
  align-self: flex-start;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--accent-light);
  font-weight: 600;
  transition: background 0.2s ease;
}

.book-link:hover,
.book-link:focus {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

.alt-bg {
  background: var(--surface);
}

.filter-bar {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
  text-align: center;
}

.filter-label {
  font-weight: 600;
}

#languageFilter {
  max-width: 380px;
  margin: 0 auto;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 16px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

#languageFilter:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 4px rgba(58, 93, 217, 0.15);
}

.filter-status {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.language-map {
  background: var(--surface);
}

.language-map__layout {
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  align-items: start;
}

.language-map__canvas {
  height: 520px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(216, 223, 245, 0.7);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  background: #e9edff;
}

.language-map__panel {
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--surface-card);
  border: 1px solid rgba(216, 223, 245, 0.6);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-height: 520px;
  min-height: 0;
  overflow: hidden;
}

.language-map__panel-heading {
  margin: 0;
  font-size: 1.1rem;
}

.language-map__panel-intro,
.language-map__tip {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.language-map__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  overflow-y: auto;
  padding-right: 6px;
  flex: 1 1 auto;
  min-height: 0;
}

.language-map__list::-webkit-scrollbar {
  width: 6px;
}

.language-map__list::-webkit-scrollbar-thumb {
  background: rgba(58, 93, 217, 0.4);
  border-radius: 999px;
}

.language-map__list:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.language-map__list-item button {
  width: 100%;
  border: 1px solid rgba(216, 223, 245, 0.8);
  background: #fff;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  display: grid;
  gap: 6px;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: border 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.language-map__list-item button:hover,
.language-map__list-item button:focus {
  border-color: var(--accent);
  box-shadow: 0 12px 24px rgba(42, 63, 146, 0.12);
  transform: translateY(-2px);
  outline: none;
}

.language-map__list-item button strong {
  font-size: 0.98rem;
}

.language-map__list-item button span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.language-map__list-item.is-active button {
  border-color: var(--accent);
  background: var(--accent-light);
}

.leaflet-container {
  font-family: inherit;
}

.leaflet-control-attribution {
  font-size: 11px;
}

.book-grid-large {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.resources {
  background: linear-gradient(160deg, #ffffff 0%, #f3f5ff 100%);
}

.resource-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.resource-card {
  padding: 32px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(205, 215, 247, 0.7);
  box-shadow: var(--shadow-soft);
}

.resource-card ul {
  padding-left: 20px;
  margin: 12px 0 20px;
  color: var(--text-muted);
}

.resource-link {
  font-weight: 600;
  color: var(--accent);
}

.testimonials {
  background: #151c35;
  color: #fff;
}

.testimonials-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 40px;
}

.testimonials blockquote {
  margin: 0;
  padding: 0;
  font-size: 1.1rem;
  line-height: 1.6;
  position: relative;
}

.testimonials blockquote::before {
  content: "“";
  position: absolute;
  top: -24px;
  left: -10px;
  font-size: 6rem;
  color: rgba(255, 255, 255, 0.12);
}

.testimonials cite {
  display: block;
  margin-top: 18px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.contact {
  background: var(--surface);
}

.contact-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
}

.contact-copy h2 {
  font-size: clamp(1.9rem, 3vw, 2.3rem);
  margin: 0 0 18px;
}

.contact-meta {
  margin: 24px 0 0;
  display: grid;
  gap: 16px;
}

.contact-meta dt {
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.contact-meta dd {
  margin: 4px 0 0;
  font-size: 1rem;
}

.contact-form {
  display: grid;
  gap: 14px;
  padding: 32px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(211, 218, 243, 0.8);
  box-shadow: var(--shadow-soft);
}

.contact-form label {
  font-weight: 600;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 12px 16px;
  font-size: 1rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 4px rgba(58, 93, 217, 0.15);
}

.form-disclaimer {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.site-footer {
  background: #0f1324;
  color: rgba(255, 255, 255, 0.78);
  padding: 36px 0;
}

.footer-grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  align-items: center;
}

.footer-brand {
  margin: 0 0 10px;
  font-weight: 600;
}

.footer-note {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 0;
  margin: 0;
  justify-content: flex-end;
}

.footer-links a {
  color: inherit;
  font-weight: 500;
}

@media (max-width: 960px) {
  .header-content {
    align-items: flex-start;
  }
  nav {
    margin-left: auto;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-list {
    position: absolute;
    top: 72px;
    right: 24px;
    flex-direction: column;
    padding: 18px;
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(200, 207, 234, 0.8);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .nav-list[aria-expanded="true"] {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .cta-ghost {
    display: none;
  }
  .language-map__layout {
    grid-template-columns: 1fr;
  }
  .language-map__panel {
    order: -1;
    max-height: none;
    min-height: auto;
    overflow: visible;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }
  .hero {
    padding: 64px 0;
  }
  .hero-figure {
    padding: 16px;
  }
  .section {
    padding: 64px 0;
  }
  .book-card figure {
    padding: 20px;
  }
  .footer-links {
    justify-content: flex-start;
  }
  .language-map__canvas {
    height: 420px;
  }
  .language-map__panel {
    padding: 24px;
    max-height: none;
    min-height: auto;
    overflow: visible;
  }
  .language-map {
    display: none;
  }
}