/* =========================================================================
   Liberum Press — Styles
   Éditorial, dark, mobile-first
   ========================================================================= */

/* --- Reset --- */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
ul,ol { list-style:none; }
details > summary { list-style:none; }
details > summary::-webkit-details-marker { display:none; }

/* --- Variables --- */
:root {
  --bg: #0c0c14;
  --bg-elevated: #12121e;
  --bg-card: #181828;
  --text: #ededf0;
  --text-dim: #9999ad;
  --accent: #c9a96e;
  --accent-hover: #dbbf88;
  --red: #e94560;
  --red-hover: #f06078;
  --border: rgba(255,255,255,0.07);
  --border-light: rgba(255,255,255,0.12);
  --radius: 6px;
  --max: 1100px;
  --tr: 0.2s ease;
}

body {
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* =========================================================================
   NAVIGATION
   ========================================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12,12,20,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent);
  flex-shrink: 0;
}
.nav-brand img { width: 26px; height: 26px; object-fit: contain; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--tr), opacity var(--tr);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-dim);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius);
  transition: color var(--tr), background var(--tr);
  white-space: nowrap;
}
.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav-link--accent { color: var(--accent); }
.nav-link--accent:hover { background: rgba(201,169,110,0.08); }

/* Lang switcher (dans nav) */
.nav-lang {
  position: relative;
  margin-left: 0.25rem;
}
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--tr);
}
.lang-toggle:hover { border-color: var(--accent); }
.lang-arrow { font-size: 0.6rem; transition: transform var(--tr); }
.lang-toggle[aria-expanded="true"] .lang-arrow { transform: rotate(180deg); }

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 200;
}
.lang-dropdown.active { display: block; }
.lang-option {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: background var(--tr), color var(--tr);
  white-space: nowrap;
}
.lang-option:hover { background: var(--bg-elevated); color: var(--accent); }

/* Mobile */
@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem;
    gap: 0;
    align-items: stretch;
  }
  .nav-links.active { display: flex; }
  .nav-link { padding: 0.75rem 1rem; font-size: 0.9rem; }
  .lang-toggle { margin-left: 1rem; margin-top: 0.5rem; align-self: flex-start; }
  .lang-dropdown {
    position: static;
    margin-top: 0;
    box-shadow: none;
    border: none;
    background: var(--bg);
    border-radius: 0;
    margin-left: 1rem;
  }
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.25rem;
  margin-top: auto;
}
.footer-container {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  text-align: center;
}
.footer-brand strong { color: var(--accent); display: block; margin-bottom: 0.25rem; font-size: 0.95rem; }
.footer-brand span { color: var(--text-dim); font-size: 0.8rem; }
.footer-links { display: flex; gap: 1.5rem; justify-content: center; font-size: 0.8rem; color: var(--text-dim); }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 0.7rem; color: var(--text-dim); opacity: 0.6; margin-top: 0.5rem; }

/* =========================================================================
   LAYOUT
   ========================================================================= */
main { min-height: calc(100vh - 56px - 120px); }

/* =========================================================================
   HERO (HOME)
   ========================================================================= */
.hero { max-width: var(--max); margin: 0 auto; padding: 3.5rem 1.25rem 1.5rem; }
.hero h1 {
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.hero-subtitle { font-size: 0.95rem; color: var(--text-dim); max-width: 480px; }
@media (min-width: 768px) {
  .hero { padding: 5rem 1.25rem 2rem; }
  .hero h1 { font-size: 2.25rem; }
}

/* =========================================================================
   CATALOGUE
   ========================================================================= */
.catalog { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem 4rem; }
.catalog-filters { display: flex; gap: 0.6rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.catalog-filters select {
  padding: 0.45rem 1.8rem 0.45rem 0.65rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 0.8rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='%23888' d='M0 0h10L5 6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
}
.catalog-filters select:focus { outline: none; border-color: var(--accent); }

/* --- Grid --- */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (min-width: 640px) { .catalog-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .catalog-grid { grid-template-columns: repeat(4, 1fr); gap: 1.25rem; } }

/* --- Book Card --- */
.book-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--tr), box-shadow var(--tr);
}
.book-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.5); }
.book-card-link { display: block; }
.book-card-cover {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: contain;
  background: #0a0a10;
}
.book-card-info { padding: 0.75rem 0.875rem; }
.book-card-category {
  font-size: 0.6rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--accent); margin-bottom: 0.2rem;
}
.book-card-title { font-size: 0.85rem; font-weight: 700; line-height: 1.3; margin-bottom: 0.15rem; }
.book-card-subtitle {
  font-size: 0.75rem; color: var(--text-dim); line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.book-card-meta { margin-top: 0.4rem; font-size: 0.65rem; color: var(--text-dim); }
.book-card-actions { padding: 0 0.875rem 0.875rem; display: flex; gap: 0.35rem; }
.book-card-actions .btn { flex: 1; padding: 0.35rem 0.4rem; font-size: 0.65rem; }

/* =========================================================================
   BOUTONS
   ========================================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
  padding: 0.6rem 1.2rem; border: none; border-radius: var(--radius);
  font-size: 0.85rem; font-weight: 600; cursor: pointer;
  transition: opacity var(--tr), transform var(--tr); text-align: center;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-secondary { background: var(--bg-elevated); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-accent { background: var(--accent); color: #0c0c14; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-dim); }
.btn-free { background: #16a34a; color: #fff; cursor: default; }
.btn-disabled { opacity: 0.5; cursor: not-allowed; }
.btn-price { font-weight: 400; opacity: 0.8; }
.btn-badge {
  font-size: 0.65rem; font-weight: 700;
  background: rgba(0,0,0,0.25); padding: 1px 5px; border-radius: 3px;
}

/* =========================================================================
   PAGE LIVRE
   ========================================================================= */
.book-detail { max-width: var(--max); margin: 0 auto; padding: 2rem 1.25rem; }

.book-hero { margin-bottom: 2rem; }
.book-hero-inner {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1.25rem;
  align-items: start;
}
@media (min-width: 768px) { .book-hero-inner { grid-template-columns: 240px 1fr; gap: 2.5rem; } }
.book-cover img {
  width: 100%; aspect-ratio: 2 / 3; object-fit: contain;
  background: #0a0a10; border-radius: var(--radius);
}
.book-title { font-size: 1.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 0.35rem; }
@media (min-width: 768px) { .book-title { font-size: 1.8rem; } }
.book-subtitle { font-size: 0.95rem; color: var(--text-dim); margin-bottom: 0.5rem; line-height: 1.4; }
.book-description { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0.75rem; line-height: 1.5; }
.book-description strong { color: var(--text); }
.book-meta { display: flex; gap: 0.75rem; font-size: 0.75rem; color: var(--text-dim); margin-bottom: 0.75rem; }
.book-author { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 1.25rem; }
.book-author span:first-child { color: var(--text); font-weight: 600; }
.book-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem; }

/* Section générique */
.book-section { border-top: 1px solid var(--border); padding: 2rem 0; }
.book-section h2 { font-size: 1rem; font-weight: 700; margin-bottom: 1rem; color: var(--accent); }

/* TOC */
.toc-nav {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1.25rem; margin-bottom: 1rem;
}
.toc-nav h2 { font-size: 0.85rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text); }
.toc-list { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; }
.toc-list li a { font-size: 0.78rem; color: var(--text-dim); transition: color var(--tr); }
.toc-list li a:hover { color: var(--accent); }

/* Learn */
.learn-list { display: grid; gap: 0.5rem; }
.learn-list li { padding-left: 1.5rem; position: relative; font-size: 0.88rem; color: var(--text-dim); }
.learn-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; font-size: 0.8rem; }

/* Audience */
.audience-grid { display: grid; gap: 0.75rem; grid-template-columns: 1fr; }
@media (min-width: 600px) { .audience-grid { grid-template-columns: repeat(2, 1fr); } }
.audience-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem; }
.audience-card h3 { font-size: 0.9rem; font-weight: 700; margin-bottom: 0.4rem; }
.audience-covered { font-size: 0.82rem; color: var(--accent); margin-bottom: 0.2rem; }
.audience-detail { font-size: 0.78rem; color: var(--text-dim); }

/* Chapters */
.chapters-list { display: grid; gap: 0.4rem; }
.chapters-list li {
  padding: 0; border-bottom: none; font-size: 0.85rem; color: var(--text-dim);
}
.chapters-list li::before { content: none; }
.chapter-item details {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.chapter-item summary {
  padding: 0.9rem 1.1rem; font-size: 0.88rem; font-weight: 600; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; color: var(--text);
}
.chapter-item summary::after {
  content: "+"; font-size: 1.1rem; color: var(--accent); font-weight: 300;
  transition: transform var(--tr); flex-shrink: 0; margin-left: 1rem;
}
.chapter-item details[open] summary::after { content: "−"; }
.chapter-sections {
  padding: 0 1.1rem 0.9rem 1.8rem; list-style: none;
  font-size: 0.82rem; line-height: 1.65; color: var(--text-dim);
}
.chapter-sections li { padding: 0.2rem 0; }
.chapter-item li:not(.chapter-item) {
  padding: 0; font-size: 0.82rem; border-bottom: none; color: var(--text-dim);
}

/* Excerpt */
.excerpt-content {
  font-size: 0.9rem; line-height: 1.7; color: var(--text-dim);
  background: var(--bg-elevated); border-left: 3px solid var(--accent);
  padding: 1.25rem; border-radius: 0 var(--radius) var(--radius) 0;
}

/* Differentiation */
.differentiation-content { font-size: 0.88rem; line-height: 1.7; color: var(--text-dim); }

/* Formats */
.formats-grid { display: grid; gap: 0.6rem; grid-template-columns: 1fr; }
@media (min-width: 500px) { .formats-grid { grid-template-columns: repeat(2, 1fr); } }
.format-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem; }
.format-card h3 { font-size: 0.88rem; font-weight: 700; margin-bottom: 0.2rem; }
.format-card p { font-size: 0.78rem; color: var(--text-dim); }

/* FAQ */
.faq-list { display: grid; gap: 0.4rem; }
.faq-item { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.faq-item summary {
  padding: 0.9rem 1.1rem; font-size: 0.88rem; font-weight: 600; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::after {
  content: "+"; font-size: 1.1rem; color: var(--accent); font-weight: 300;
  transition: transform var(--tr); flex-shrink: 0; margin-left: 1rem;
}
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 1.1rem 1.1rem; font-size: 0.82rem; line-height: 1.65; color: var(--text-dim); }

/* Similar */
.similar-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
@media (min-width: 600px) { .similar-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .similar-grid { grid-template-columns: repeat(4, 1fr); } }
.similar-card {
  display: block; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: transform var(--tr), border-color var(--tr);
}
.similar-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.similar-card img { width: 100%; aspect-ratio: 2 / 3; object-fit: contain; background: #0a0a10; }
.similar-info { padding: 0.65rem; }
.similar-info h3 { font-size: 0.78rem; font-weight: 700; line-height: 1.3; margin-bottom: 0.15rem; }
.similar-info p { font-size: 0.68rem; color: var(--text-dim); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.similar-meta { margin-top: 0.25rem; font-size: 0.62rem; color: var(--text-dim); }

/* =========================================================================
   NEWSLETTER
   ========================================================================= */
.newsletter {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 1.25rem;
}
.newsletter-container {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.25rem;
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}
.newsletter h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.newsletter > .newsletter-container > p,
.newsletter-container > p {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}
.newsletter-form {
  display: flex;
  gap: 0.5rem;
}
.newsletter-form input[type="email"] {
  flex: 1;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 0.85rem;
  min-width: 0;
}
.newsletter-form input[type="email"]::placeholder { color: var(--text-dim); opacity: 0.5; }
.newsletter-form input[type="email"]:focus { outline: none; border-color: var(--accent); }
.newsletter-form .btn { white-space: nowrap; }
.newsletter-feedback {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  min-height: 1.2em;
}
.newsletter-feedback.success { color: #4caf50; }
.newsletter-feedback.error { color: var(--red); }

@media (max-width: 480px) {
  .newsletter-form { flex-direction: column; }
  .newsletter-container { padding: 1.5rem 1rem; }
}

/* =========================================================================
   ABOUT
   ========================================================================= */
.about-page { max-width: var(--max); margin: 0 auto; padding: 2.5rem 1.25rem; }

.about-hero { margin-bottom: 3rem; }
.about-hero h1 {
  font-size: 1.6rem; font-weight: 800; line-height: 1.2;
  margin-bottom: 0.5rem; letter-spacing: -0.01em;
}
.about-subtitle { font-size: 0.95rem; color: var(--text-dim); max-width: 550px; }

.about-author {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}
.about-author h2 { font-size: 1rem; font-weight: 700; color: var(--accent); margin-bottom: 1.25rem; }
.author-card {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1rem;
  align-items: start;
}
@media (min-width: 640px) { .author-card { grid-template-columns: 96px 1fr; gap: 1.5rem; } }
.author-avatar img { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; background: var(--bg-elevated); }
@media (min-width: 640px) { .author-avatar img { width: 96px; height: 96px; } }
.author-bio { display: grid; gap: 0.75rem; }
.author-bio p { font-size: 0.88rem; line-height: 1.65; color: var(--text-dim); }

.about-press {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}
.about-press h2 { font-size: 1rem; font-weight: 700; color: var(--accent); margin-bottom: 0.75rem; }
.about-press > p { font-size: 0.88rem; line-height: 1.65; color: var(--text-dim); max-width: 650px; margin-bottom: 1rem; }
.press-values { display: grid; gap: 0.4rem; }
.press-values li {
  font-size: 0.85rem; color: var(--text-dim);
  padding-left: 1.5rem; position: relative;
}
.press-values li::before {
  content: "◆"; position: absolute; left: 0; color: var(--accent); font-size: 0.55rem; top: 0.45em;
}

.about-contact {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}
.about-contact h2 { font-size: 1rem; font-weight: 700; color: var(--accent); margin-bottom: 0.5rem; }
.about-contact > p { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 1rem; }

/* =========================================================================
   BREADCRUMB (partial)
   ========================================================================= */
.breadcrumb { margin-bottom: 1.5rem; font-size: 0.78rem; color: var(--text-dim); display: flex; gap: 0.35rem; flex-wrap: wrap; }
.breadcrumb a { color: var(--text-dim); transition: color var(--tr); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.3; }

/* =========================================================================
   LANGUAGE SWITCHER (standalone, sur les pages)
   ========================================================================= */
.language-switcher { margin-bottom: 1.5rem; }
.lang-list { display: flex; gap: 0.25rem; }
.lang-item a, .lang-item span {
  font-size: 0.75rem; font-weight: 600; padding: 0.3rem 0.6rem;
  border-radius: var(--radius); color: var(--text-dim);
  transition: color var(--tr), background var(--tr);
}
.lang-item a:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.lang-item.lang-active span { color: var(--accent); background: rgba(201,169,110,0.1); }

/* =========================================================================
   EMAIL CAPTURE (partial dans home/about)
   ========================================================================= */
.empty-state { text-align: center; padding: 4rem 1rem; color: var(--text-dim); }

/* =========================================================================
   ERROR PAGES
   ========================================================================= */
.error-page { flex: 1; display: flex; align-items: center; justify-content: center; padding: 3rem 1rem; text-align: center; }
.error-code { font-size: 5rem; font-weight: 800; color: var(--red); line-height: 1; margin-bottom: 0.25rem; }
.error-title { font-size: 1.25rem; margin-bottom: 0.5rem; }
.error-description { color: var(--text-dim); margin-bottom: 1.5rem; font-size: 0.9rem; }

/* =========================================================================
   CLUB PRIVÉ
   ========================================================================= */
.club-page { flex: 1; }

.club-hero {
  text-align: center;
  padding: 4rem 1rem 3rem;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg) 100%);
}
.club-hero h1 { font-size: 2rem; margin-bottom: 0.75rem; }
.club-hero__subtitle {
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.6;
}

.club-benefits { padding: 3rem 1rem; }
.club-benefits h2 { text-align: center; font-size: 1.4rem; margin-bottom: 2rem; }

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}
.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  transition: border-color var(--tr);
}
.benefit-card:hover { border-color: var(--accent); }
.benefit-icon { font-size: 1.75rem; margin-bottom: 0.75rem; }
.benefit-card h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.benefit-card p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.5; }

.club-access { padding: 3rem 1rem 4rem; }
.club-access h2 { text-align: center; font-size: 1.4rem; margin-bottom: 2rem; }

.access-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}
.access-step {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}
.step-number {
  width: 2.5rem; height: 2.5rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.access-step h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.access-step p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.5; }

.club-cta { text-align: center; margin-top: 2.5rem; }

@media (max-width: 640px) {
  .club-hero h1 { font-size: 1.6rem; }
  .benefits-grid { grid-template-columns: 1fr; }
  .access-steps { grid-template-columns: 1fr; }
}

/* =========================================================================
   BLOG
   ========================================================================= */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  padding: 1rem 0;
}

.blog-card {
  background: var(--bg-elevated);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.blog-card-img {
  display: block;
}

.blog-card-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.blog-card-body {
  padding: 1.2rem;
}

.blog-card-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: var(--bg-card);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}

.blog-card-title {
  font-size: 1.15rem;
  line-height: 1.4;
  margin: 0 0 0.5rem;
}

.blog-card-title a {
  color: var(--text);
  text-decoration: none;
}

.blog-card-title a:hover {
  color: var(--accent);
}

.blog-card-subtitle {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0 0 0.6rem;
}

.blog-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
  margin: 0 0 0.8rem;
}

.blog-card-meta {
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  gap: 0.8rem;
}

/* Article detail */

.blog-article {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.blog-article-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.blog-article-cover {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.blog-article-meta {
  font-size: 0.82rem;
  color: var(--text-dim);
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.blog-article-subtitle {
  color: var(--text-dim);
  font-size: 1.1rem;
  margin: 0.5rem 0 0;
}

.blog-article-content {
  line-height: 1.75;
  font-size: 1rem;
  color: var(--text-secondary);
}

.blog-article-content h2,
.blog-article-content h3 {
  color: var(--text);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

.blog-article-content p {
  margin-bottom: 1.2rem;
}

.blog-article-content code {
  background: var(--bg-card);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.blog-article-content pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.blog-article-content pre code {
  background: none;
  padding: 0;
}

.blog-article-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 1.5rem 0;
}

.blog-article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.blog-article-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--text-dim);
  font-style: italic;
}

.blog-article-content ul, .blog-article-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.2rem;
}

.blog-article-content li {
  margin-bottom: 0.4rem;
}

.blog-article-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

/* Related posts */

.blog-related {
  max-width: 720px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.blog-related h2 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-article { padding: 1.5rem 0.8rem; }
  .blog-article-cover { max-height: 220px; }
}

/* Back to TOC floating button */
.back-to-toc {
  position: fixed;
  bottom: 5rem;
  right: 1.5rem;
  z-index: 90;
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent, #d4a843);
  color: var(--bg, #0a0e17);
  border-radius: 0.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}
.back-to-toc.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-toc:hover {
  transform: scale(1.1);
}
.back-to-toc svg {
  stroke-width: 2.5;
}