/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:       #1a1713;
  --ink-2:     #4a4540;
  --ink-3:     #8a8480;
  --paper:     #faf8f4;
  --paper-2:   #f2ede4;
  --paper-3:   #e8e0d2;
  --accent:    #7a3b1e;
  --accent-2:  #c4622d;
  --gold:      #b8913a;
  --border:    rgba(26,23,19,.12);
  --border-2:  rgba(26,23,19,.22);
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;
  --radius:     6px;
  --shadow:     0 2px 12px rgba(26,23,19,.08);
  --shadow-lg:  0 8px 32px rgba(26,23,19,.14);
}

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

/* ── En-tête éditorial ─────────────────────────────────────── */
.bib-header {
  background: var(--ink);
  color: var(--paper);
  padding: 4rem 2rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.bib-header::before {
  content: '';
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 39px,
    rgba(255,255,255,.04) 39px, rgba(255,255,255,.04) 40px
  );
  pointer-events: none;
}
.bib-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 300;
  letter-spacing: .02em;
  line-height: 1.1;
  margin-bottom: .5rem;
}
.bib-header p {
  color: rgba(250,248,244,.6);
  font-size: .95rem;
  font-weight: 300;
  max-width: 520px;
  margin: 0 auto;
}
.bib-header .stat-row {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 2rem;
}
.bib-header .stat { text-align: center; }
.bib-header .stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--gold);
}
.bib-header .stat span {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(250,248,244,.5);
}

/* ── Filtres de recherche (Moteur de tri dynamique) ────────── */
.bib-filters {
  background: var(--paper-2);
  border-bottom: 1px solid var(--border);
  padding: 1.75rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.filters-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  align-items: end;
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-group label {
  display: block;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--ink-3);
  margin-bottom: .4rem;
  font-weight: 500;
}

.filter-group select {
  width: 100%;
  padding: .6rem .9rem;
  background: var(--paper);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: .9rem;
  color: var(--ink);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238a8480'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .9rem center;
  cursor: pointer;
  transition: border-color .2s;
}

.filter-group select:focus {
  outline: none;
  border-color: var(--accent);
}

.filter-reset {
  height: 41px;
  padding: 0 1.2rem;
  background: transparent;
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: .88rem;
  color: var(--ink-2);
  cursor: pointer;
  white-space: nowrap;
  transition: all .2s;
}

.filter-reset:hover { 
  background: var(--paper-3); 
  border-color: var(--ink-3); 
  color: var(--ink);
}

/* ── Zone Principale ───────────────────────────────────────── */
.bib-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}
.carousel-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.carousel-nav h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--ink-2);
}

/* Grille et Cartes de base */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.book-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.book-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-2);
}

/* Tranches colorées par Mouvements */
.card-spine { height: 5px; background: var(--accent); }
.card-spine.baroque        { background: #9b3e8c; }
.card-spine.classicisme    { background: #2563a8; }
.card-spine.lumieres       { background: #c4862d; }
.card-spine.romantisme     { background: #c43d3d; }
.card-spine.realisme       { background: #2d7a4f; }
.card-spine.naturalisme    { background: #4a7a2d; }
.card-spine.symbolisme     { background: #6b3d9e; }
.card-spine.surrealisme, 
.card-spine.surrealism     { background: #e84393; }
.card-spine.absurde        { background: #6b6b6b; }
.card-spine.existentialisme { background: #c43d3d; }

/* Contenu des fiches */
.card-body {
  padding: 1.1rem 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-meta {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  margin-bottom: .65rem;
}

/* Badges / Tableaux de métadonnées */
.tag {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: .18rem .55rem;
  border-radius: 2rem;
  font-weight: 500;
}
.tag-siecle { background: var(--paper-3); color: var(--ink-2); }
.tag-mvt    { background: #ede8f0; color: #5a2d7a; }
.tag-approach { background: #e8f0fe; color: #1a73e8; }

.card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: .4rem;
  color: var(--ink);
}
.card-auteur {
  font-size: .82rem;
  color: var(--ink-3);
  margin-bottom: .7rem;
}
.card-auteur span { color: var(--gold); font-weight: 500; }
.card-desc {
  font-size: .85rem;
  color: var(--ink-2);
  line-height: 1.55;
  flex: 1;
}
.card-desc strong { color: var(--ink); }

/* Indicateur de temps */
.analysis-time {
  font-size: .78rem;
  color: var(--ink-3);
  margin-top: .8rem;
  display: flex;
  align-items: center;
}

/* ── Actions ──────────────────────────────────────────────── */
.card-actions {
  padding: .75rem 1.2rem;
  border-top: 1px solid var(--border);
  display: flex;
}

.btn-read-analysis {
  flex: 1;
  display: inline-block;
  text-align: center;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  padding: .55rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
}

.btn-read-analysis:hover {
  background: var(--accent-2);
  color: #fff;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .bib-header { padding: 2.5rem 1.25rem 2rem; }
  .bib-header .stat-row { gap: 1.5rem; }
  .bib-filters { padding: 1rem 1.25rem; }
  .filters-inner { grid-template-columns: 1fr; gap: 1.25rem; }
  .filter-reset { width: 100%; }
  .bib-main { padding: 1.25rem; }
  .cards-grid { grid-template-columns: 1fr; }
}