/* =====================================================================
   Bibliothèque — page de détail d'un document (ISAGE/KAHUZI-BIEGA)
   ===================================================================== */
:root {
    --bd-green: #166534;
    --bd-green-dark: #0e2a17;
    --bd-gold: #d4a017;
    --bd-ink: #1f2a24;
    --bd-muted: #6b7a71;
    --bd-line: #e4eae6;
    --bd-soft: #f4f8f5;
}

/* Fil d'Ariane */
.bibdet-topbar { background: var(--bd-soft); border-bottom: 1px solid var(--bd-line); }
.bibdet-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem;
    padding: 1rem 0;
    font-size: .85rem;
    color: var(--bd-muted);
}
.bibdet-breadcrumb a { color: var(--bd-green); text-decoration: none; }
.bibdet-breadcrumb a:hover { text-decoration: underline; }
.bibdet-breadcrumb i { font-size: .6rem; color: #b8c4bd; }
.bibdet-breadcrumb span { color: var(--bd-ink); }

/* Grille principale */
.bibdet-container { padding-top: 2.5rem; padding-bottom: 4rem; }
.bibdet-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 350px;
    gap: 2.5rem;
    align-items: start;
}

/* Colonne principale */
.bibdet-header { margin-bottom: 2rem; }
.bibdet-collection {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .35rem .8rem;
    margin-bottom: 1rem;
    border-radius: 2rem;
    background: rgba(22, 101, 52, .08);
    color: var(--bd-green);
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .03em;
    text-transform: uppercase;
    text-decoration: none;
}
.bibdet-collection:hover { background: rgba(22, 101, 52, .16); color: var(--bd-green-dark); }
.bibdet-title {
    margin: 0 0 1rem;
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(1.8rem, 4vw, 2.7rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--bd-green-dark);
}
.bibdet-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    color: var(--bd-muted);
    font-size: .9rem;
    font-weight: 600;
}
.bibdet-meta i { color: var(--bd-gold); margin-right: .35rem; }

.bibdet-section { margin-bottom: 2.5rem; }
.bibdet-section-title {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin: 0 0 1.1rem;
    padding-bottom: .7rem;
    border-bottom: 2px solid var(--bd-line);
    font-family: "Playfair Display", Georgia, serif;
    font-size: 1.3rem;
    color: var(--bd-green-dark);
}
.bibdet-section-title i { color: var(--bd-gold); font-size: 1.05rem; }

.bibdet-summary { font-size: 1rem; line-height: 1.85; color: #384a40; }
.bibdet-summary p { margin: 0 0 1rem; }
.bibdet-summary img { max-width: 100%; height: auto; border-radius: 8px; }
.bibdet-summary h1, .bibdet-summary h2, .bibdet-summary h3 { color: var(--bd-green-dark); }
.bibdet-summary a { color: var(--bd-green); }

/* Aperçu PDF */
.bibdet-pdf {
    position: relative;
    width: 100%;
    height: 640px;
    border: 1px solid var(--bd-line);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bd-soft);
}
.bibdet-pdf iframe { width: 100%; height: 100%; border: 0; }
.bibdet-pdf-fallback { margin-top: .7rem; font-size: .85rem; color: var(--bd-muted); }
.bibdet-pdf-fallback a { color: var(--bd-green); font-weight: 600; }

/* Documents similaires */
.bibdet-similar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.bibdet-similar-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--bd-line);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform .2s ease, box-shadow .2s ease;
}
.bibdet-similar-card:hover { transform: translateY(-4px); box-shadow: 0 16px 32px rgba(14, 42, 23, .12); }
.bibdet-similar-cover { aspect-ratio: 16 / 10; background: var(--bd-soft); }
.bibdet-similar-cover img { width: 100%; height: 100%; object-fit: cover; }
.bibdet-similar-body { padding: .8rem .9rem 1rem; }
.bibdet-similar-body h3 { margin: 0 0 .3rem; font-size: .92rem; line-height: 1.3; color: var(--bd-green-dark); font-family: "Playfair Display", Georgia, serif; }
.bibdet-similar-body span { display: block; font-size: .8rem; color: var(--bd-green); font-weight: 600; }
.bibdet-similar-body small { color: var(--bd-muted); font-size: .78rem; }

/* Panneau d'action (sticky) */
.bibdet-aside { position: sticky; top: 1.5rem; }
.bibdet-card {
    border: 1px solid var(--bd-line);
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 18px 40px rgba(14, 42, 23, .08);
}
.bibdet-cover { background: var(--bd-soft); border-bottom: 1px solid var(--bd-line); }
.bibdet-cover img { display: block; width: 100%; max-height: 340px; object-fit: contain; padding: 1.2rem; }

.bibdet-actions { display: flex; flex-direction: column; gap: .6rem; padding: 1.2rem 1.2rem 0; }
.bibdet-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .55rem;
    padding: .8rem 1rem;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: .92rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all .2s ease;
}
.bibdet-btn--primary { background: var(--bd-green); color: #fff; }
.bibdet-btn--primary:hover { background: var(--bd-green-dark); color: #fff; }
.bibdet-btn--outline { background: #fff; border-color: var(--bd-green); color: var(--bd-green); }
.bibdet-btn--outline:hover { background: var(--bd-green); color: #fff; }
.bibdet-locked {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .7rem 1rem;
    border-radius: 10px;
    background: var(--bd-soft);
    color: var(--bd-muted);
    font-size: .85rem;
    font-weight: 600;
}

/* Partage */
.bibdet-share { padding: 1.2rem; border-bottom: 1px solid var(--bd-line); }
.bibdet-share-label { display: block; margin-bottom: .7rem; font-size: .8rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--bd-muted); }
.bibdet-share-label i { color: var(--bd-gold); margin-right: .35rem; }
.bibdet-share-buttons { display: flex; flex-wrap: wrap; gap: .5rem; }
.bibdet-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--bd-line);
    border-radius: 10px;
    background: #fff;
    color: var(--bd-ink);
    font-size: 1rem;
    cursor: pointer;
    transition: all .2s ease;
}
.bibdet-share-btn:hover { transform: translateY(-2px); color: #fff; }
.bibdet-share-btn.facebook:hover { background: #1877f2; border-color: #1877f2; }
.bibdet-share-btn.twitter:hover { background: #1da1f2; border-color: #1da1f2; }
.bibdet-share-btn.whatsapp:hover { background: #25d366; border-color: #25d366; }
.bibdet-share-btn.linkedin:hover { background: #0a66c2; border-color: #0a66c2; }
.bibdet-share-btn.copy:hover { background: var(--bd-green); border-color: var(--bd-green); }
.bibdet-share-btn.copied { background: var(--bd-green); border-color: var(--bd-green); color: #fff; }

/* Fiche technique */
.bibdet-facts { list-style: none; margin: 0; padding: .5rem 1.2rem; }
.bibdet-facts li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: .7rem 0;
    border-bottom: 1px solid var(--bd-line);
    font-size: .88rem;
}
.bibdet-facts li:last-child { border-bottom: 0; }
.bibdet-facts span { color: var(--bd-muted); }
.bibdet-facts strong { color: var(--bd-ink); text-align: right; }

.bibdet-back {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: 1rem;
    border-top: 1px solid var(--bd-line);
    background: var(--bd-soft);
    color: var(--bd-green);
    font-size: .88rem;
    font-weight: 600;
    text-decoration: none;
}
.bibdet-back:hover { background: #eaf1ec; color: var(--bd-green-dark); }

/* Responsive */
@media (max-width: 991.98px) {
    .bibdet-grid { grid-template-columns: 1fr; }
    .bibdet-aside { position: static; order: -1; }
    .bibdet-cover img { max-height: 300px; }
    .bibdet-pdf { height: 520px; }
    .bibdet-similar-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 575.98px) {
    .bibdet-container { padding-top: 1.8rem; }
    .bibdet-pdf { height: 420px; }
    .bibdet-similar-grid { grid-template-columns: 1fr; }
    .bibdet-meta { gap: .8rem; font-size: .84rem; }
}