:root {
  --bg: #f8f7f4;
  --surface: #ffffff;
  --surface-soft: #f2f4f7;
  --text: #1f2933;
  --muted: #52606d;
  --border: #d9e2ec;
  --accent: #7b1e3a;
  --accent-2: #005f99;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fcfbf9 0%, #f5f7fa 100%);
  line-height: 1.6;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

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

.container {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(248, 247, 244, 0.92);
  border-bottom: 1px solid rgba(217, 226, 236, 0.9);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav a {
  color: var(--text);
  font-weight: 600;
}

.hero {
  padding: 4rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.9fr);
  gap: 2rem;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--accent);
  background: rgba(123, 30, 58, 0.08);
  border: 1px solid rgba(123, 30, 58, 0.12);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
}

.hero h1,
.page-hero h1 {
  margin: 1rem 0 1rem;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.08;
}

.hero-lead,
.page-lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 64ch;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.button,
.button-secondary,
.button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

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

.button:hover,
.button:focus,
.button-secondary:hover,
.button-secondary:focus,
.button-ghost:hover,
.button-ghost:focus {
  transform: translateY(-1px);
  text-decoration: none;
}

.button-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.button-ghost {
  background: transparent;
  color: var(--accent-2);
  border: 1px solid rgba(0, 95, 153, 0.2);
}

.hero-panel,
.info-card,
.resource-card,
.section-card,
.chapter-card,
.page-card,
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 1.4rem;
}

.hero-panel h2,
.section-header h2,
.page-section h2 {
  margin-top: 0;
}

.meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}

.meta-list li {
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.meta-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.meta-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 800;
  margin-bottom: 0.15rem;
}

.section {
  padding: 1.25rem 0 3rem;
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.section-header p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.resource-grid,
.feature-grid,
.link-grid,
.detail-grid {
  display: grid;
  gap: 1.3rem;
}

.resource-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
}

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

.detail-grid {
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  align-items: start;
}

.resource-card,
.chapter-card,
.page-card,
.section-card,
.summary-card {
  padding: 1.25rem;
}

.resource-card h3,
.chapter-card h3,
.page-card h3,
.section-card h3 {
  margin: 0.1rem 0 0.55rem;
  font-size: 1.15rem;
}

.resource-card p,
.chapter-card p,
.page-card p,
.section-card p,
.summary-card p {
  color: var(--muted);
  margin-top: 0.45rem;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.85rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  background: var(--surface-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

.badge.available {
  background: rgba(0, 95, 153, 0.08);
  color: var(--accent-2);
  border-color: rgba(0, 95, 153, 0.18);
}

.badge.progress {
  background: rgba(123, 30, 58, 0.08);
  color: var(--accent);
  border-color: rgba(123, 30, 58, 0.16);
}

.badge.french {
  background: rgba(62, 128, 49, 0.1);
  color: #2e6a26;
  border-color: rgba(60, 128, 49, 0.18);
}

.badge.series {
  background: rgba(123, 30, 58, 0.08);
  color: var(--accent);
}

.resource-links,
.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1rem;
}

.cover-card {
  overflow: hidden;
}

.cover-card img {
  width: 100%;
  border-radius: calc(var(--radius) - 6px);
}

.cover-caption {
  font-size: 0.94rem;
  color: var(--muted);
  margin-top: 0.85rem;
}

.page-hero {
  padding: 3.2rem 0 1.6rem;
}

.kicker {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
  margin-top: 1.2rem;
}

.page-meta .info-card {
  padding: 0.95rem 1rem;
  min-height: 100%;
}

.page-meta strong {
  display: block;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.chapter-list {
  display: grid;
  gap: 1rem;
}

.chapter-card {
  display: grid;
  grid-template-columns: minmax(72px, 92px) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.chapter-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 20px;
  background: rgba(0, 95, 153, 0.08);
  color: var(--accent-2);
  font-size: 1rem;
  font-weight: 800;
  border: 1px solid rgba(0, 95, 153, 0.14);
}

.chapter-card small,
.muted,
.note {
  color: var(--muted);
}

.callout {
  background: linear-gradient(135deg, rgba(123, 30, 58, 0.08), rgba(0, 95, 153, 0.06));
  border: 1px solid rgba(123, 30, 58, 0.12);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem;
}

.callout h3 {
  margin-top: 0;
}

.site-footer {
  margin-top: 2rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

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

.site-footer h2,
.site-footer h3 {
  margin-top: 0;
  color: var(--text);
}

.logo-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}

.logo-row img {
  max-height: 30px;
  width: auto;
}

.summary-list {
  margin: 0;
  padding-left: 1.2rem;
}

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

  .site-header-inner,
  .section-header {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .hero {
    padding-top: 2.7rem;
  }

  .chapter-card {
    grid-template-columns: 1fr;
  }

  .chapter-number {
    width: 62px;
    height: 62px;
    border-radius: 16px;
  }
}

.series-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.volume-card {
  border-top: 4px solid var(--card-accent, var(--accent-2));
}

.volume-card h3 a,
.volume-card h3 a:visited,
.volume-card .volume-label {
  color: var(--card-accent, var(--accent-2));
}

.volume-card h3 a:hover,
.volume-card h3 a:focus {
  color: var(--card-accent, var(--accent-2));
}

.series-cover {
  width: 100%;
  border-radius: calc(var(--radius) - 6px);
  margin-bottom: 0.9rem;
  border: 1px solid var(--border);
}

.card-meta {
  color: var(--text);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

@media (max-width: 980px) {
  .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .series-grid {
    grid-template-columns: 1fr;
  }
}