/* Masquer les scrollbars sur tous les navigateurs */
::-webkit-scrollbar { display: none; }
html, body { -ms-overflow-style: none; scrollbar-width: none; overflow: auto; }

/* ====== NOUVELLE CLASSE POUR BOUTONS DE FILTRE (identité site) ====== */
.filter-btn {
    padding: 0.6rem 0.9rem;
    background: var(--pantone-293);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.22s ease, transform 0.12s ease, box-shadow 0.22s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
}

.filter-btn:hover {
    background: var(--pantone-3125);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--pantone-3125);
}

/* Assurer visibilité texte FR/EN (le JS global gère l'affichage) */
.filter-btn .fr-text,
.filter-btn .en-text {
    display: inline;
}

/* Petite adaptation mobile */
@media (max-width: 480px) {
    .filter-btn { padding: 0.45rem 0.6rem; font-size: 0.85rem; border-radius: 6px; }
}

.pdf-container {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.pdf-viewer {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

.pdf-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.pdf-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
}

.pdf-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 61, 165, 0.2);
    border-color: var(--pantone-293);
}

/* Ancienne prévisualisation (avec icône) - conservée pour fallback */
.pdf-preview {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--pantone-293) 0%, var(--pantone-3125) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

/* Nouvelle prévisualisation avec iframe */
.pdf-preview-iframe {
    position: relative;
    width: 100%;
    height: 400px;
    border-radius: 12px 12px 0 0;
    overflow: hidden;
    background: #f5f5f5;
    flex-shrink: 0;
}

.pdf-preview-iframe iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* Loading spinner pour les cartes */
.pdf-preview-iframe .pdf-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #003da5;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 5;
}

.pdf-preview-iframe .pdf-loading.hidden {
    display: none;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.pdf-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.pdf-info h3 {
    color: var(--pantone-293);
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    line-height: 1.4;
    /* Gestion du retour à la ligne pour les titres longs */
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.pdf-info p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
    /* Gestion du retour à la ligne pour les textes longs */
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.pdf-link {
    display: block;
    margin-top: 1rem;
    padding: 0.8rem 1.2rem;
    background: var(--pantone-293);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    text-align: center;
    transition: background 0.3s ease;
    font-size: 0.9rem;
    /* Éviter le débordement du texte */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-link:hover {
    background: var(--pantone-3125);
}

.pdf-link.external-link::after {
    content: " ↗";
}

.back-button {
    position: fixed;
    top: 2rem;
    left: 2rem;
    background: var(--pantone-293);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    z-index: 100;
    transition: background 0.3s ease;
}

.back-button:hover {
    background: var(--pantone-3125);
}

.viewer-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 99;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.viewer-header h2 {
    margin: 0;
    color: var(--pantone-293);
    font-size: 1.5rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 70%;
}

.viewer-header button {
    background: var(--pantone-293);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
    flex-shrink: 0;
}

.viewer-header button:hover {
    background: var(--pantone-3125);
}

.pdf-container.fullscreen {
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

.page-navigation {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 61, 165, 0.9);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    z-index: 100;
    display: none;
}

.page-navigation.visible {
    display: block;
}

/* ===== responsive breakpoints ===== */
@media (max-width: 1024px) {
    .pdf-gallery {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .pdf-preview { height: 350px; }
    .pdf-preview-iframe { height: 350px; }
    
    .pdf-info h3 { font-size: 1rem; }
    .filter-btn { padding: 0.55rem 0.85rem; font-size: 0.92rem; }
    .viewer-header { padding: 0.9rem 1.2rem; }
    .viewer-header h2 { font-size: 1.3rem; max-width: 65%; }
    /* allow filters to wrap earlier */
    section > div { gap: 0.6rem !important; }
}

@media (max-width: 768px) {
    .pdf-gallery {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 1.2rem;
        padding: 1rem;
    }
    
    .pdf-preview { height: 300px; font-size: 2.4rem; }
    .pdf-preview-iframe { height: 300px; }
    
    .pdf-info { padding: 1rem; }
    .pdf-info h3 { font-size: 0.98rem; }
    .pdf-info p { font-size: 0.85rem; }
    .pdf-link { padding: 0.6rem 0.9rem; font-size: 0.85rem; }
    .filter-btn { padding: 0.45rem 0.7rem; font-size: 0.85rem; }
    .viewer-header h2 { font-size: 1.1rem; max-width: 60%; }
    /* stack filter groups and search/reset vertically */
    section > div { flex-direction: column !important; align-items: stretch !important; gap: 0.6rem !important; }
    #decadeFilters, #themeFilters { margin-left: 0 !important; }
    #decadeFilters, #themeFilters { justify-content: flex-start; }
}

@media (max-width: 480px) {
    .pdf-gallery {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0.75rem;
    }
    
    .pdf-preview { height: 250px; }
    .pdf-preview-iframe { height: 250px; }
    
    .pdf-preview img, .pdf-preview canvas { width: 100%; height: 100%; object-fit: cover; }
    .pdf-info { padding: 0.9rem; }
    .pdf-info h3 { font-size: 0.95rem; }
    .pdf-info p { font-size: 0.8rem; }
    .pdf-link { padding: 0.55rem 0.8rem; font-size: 0.82rem; border-radius: 6px; }
    .filter-btn { padding: 0.4rem 0.6rem; font-size: 0.8rem; border-radius: 6px; }
    /* show filters in blocks for easy tap */
    section > div { flex-direction: column !important; align-items: stretch !important; gap: 0.5rem !important; }
    #decadeFilters, #themeFilters { display: flex !important; flex-wrap: wrap !important; gap: 0.4rem !important; }
    /* viewer header smaller on phone */
    .viewer-header { padding: 0.6rem 0.8rem; }
    .viewer-header h2 { font-size: 0.95rem; max-width: 55%; }
    .viewer-header button { padding: 0.5rem 0.8rem; font-size: 0.85rem; }
    .back-button { top: 0.6rem; left: 0.6rem; padding: 0.45rem 0.9rem; }
}