/* ===========================================================
   bibliotheque.css — Page Bibliothèque + Single livre v4
   =========================================================== */

/* ============ Header de la page archive ============ */
.biblio__archive-header {
    text-align: center;
    margin-bottom: 70px;
}

.biblio__archive-header .eyebrow {
    justify-content: center;
}

.biblio__archive-header .biblio__title {
    margin-bottom: 16px;
}

.biblio__archive-header .biblio__sub {
    max-width: 580px;
    margin: 0 auto;
}

/* ============ Grille archive — 4 col ============ */
.biblio__grid--archive {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 56px 40px;
}

.book__excerpt {
    font-family: var(--font-serif);
    font-size: 14px;
    color: var(--color-ink-soft);
    line-height: 1.55;
    margin-bottom: 12px;
    font-weight: 380;
    font-variation-settings: 'opsz' 18, 'SOFT' 30;
}

/* ============ Single livre ============ */
.livre-single {
    position: relative;
    padding: 80px 36px 130px;
    background: var(--color-paper-aged);
    overflow: hidden;
}

.livre-single::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='200' viewBox='0 0 80 200'><g stroke='%23064e3b' stroke-width='0.4' opacity='0.18' fill='none'><path d='M10 0 L10 200'/><path d='M30 0 L30 200'/><path d='M50 0 L50 200'/><path d='M70 0 L70 200'/></g></svg>");
    background-size: 80px 200px;
    opacity: 0.5;
    pointer-events: none;
}

@media (max-width: 760px) { .livre-single { padding: 50px 24px 90px; } }

.livre-single__inner {
    position: relative;
    z-index: 2;
}

.back-link {
    display: inline-block;
    margin-bottom: 60px;
    font-family: var(--font-sans);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--color-ink-soft);
    transition: color var(--transition-fast);
}

.back-link:hover { color: var(--color-secondary); }

.livre-single__grid {
    display: grid;
    grid-template-columns: 0.9fr 1.5fr;
    gap: 80px;
    align-items: start;
}

@media (max-width: 900px) {
    .livre-single__grid { grid-template-columns: 1fr; gap: 50px; }
    .livre-single__cover-wrap { max-width: 360px; margin: 0 auto; }
}

.livre-single__cover {
    aspect-ratio: 3 / 4;
    background: var(--color-primary);
    position: relative;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: rotate(-0.8deg);
}

.livre-single__cover img,
.livre-single__cover-empty {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.livre-single__cover-empty {
    display: grid;
    place-items: center;
    padding: 30px;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-paper);
}

.livre-single__cover-title {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 24px;
    line-height: 1.2;
    font-weight: 460;
}

.livre-single__cover::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 8px;
    background: linear-gradient(90deg, rgba(0,0,0,0.4), transparent);
    pointer-events: none;
    z-index: 2;
}

.livre-single__title {
    font-family: var(--font-serif);
    font-weight: 460;
    font-size: clamp(36px, 5vw, 60px);
    line-height: 1.02;
    color: var(--color-ink);
    letter-spacing: -0.022em;
    margin-block: 14px 36px;
    font-variation-settings: 'opsz' 96, 'SOFT' 30;
}

.livre-single__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    margin-bottom: 36px;
    padding-block: 24px;
    border-block: 1px solid var(--color-stone-dark);
}

.livre-single__meta > div {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.livre-single__meta dt {
    font-family: var(--font-sans);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.28em;
    color: var(--color-ink-soft);
    font-weight: 600;
}

.livre-single__meta dd {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--color-primary);
    font-weight: 460;
    margin: 0;
    font-variation-settings: 'opsz' 24, 'SOFT' 30;
}

.livre-single__desc {
    font-family: var(--font-serif);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-ink);
    margin-bottom: 36px;
    font-weight: 380;
    font-variation-settings: 'opsz' 18, 'SOFT' 30;
}