/* Styles pour l'affichage frontend - Version mise à jour */
:root {
    --primary-color: #446cb3; /* Bleu */
    --secondary-color: #f3c827; /* Jaune */
    --accent-color: #333;
    --bg-color: #f9f9f9;
    --text-color: #333;
    --border-color: #ddd;
    --card-bg: #fff;
    --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    --card-hover-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    --button-hover: #3a5a99; /* Bleu légèrement plus foncé */
}

.pdf-documents {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
    background: var(--bg-color);
    border-radius: 8px;
}

.pdf-documents h2 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 15px;
}

.pdf-documents h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

/* Filtres */
.pdf-filters {
    background: var(--card-bg);
    padding: 25px;
    margin-bottom: 35px;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--primary-color);
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-buttons {
    display: flex;
    gap: 15px;
}

.filter-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--accent-color);
    font-size: 15px;
}

.filter-group select,
.filter-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 15px;
    transition: all 0.3s ease;
    background-color: #f5f5f5;
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(68, 108, 179, 0.15);
    background-color: #fff;
}

.pdf-filter-button,
.pdf-reset-button {
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 26px;
    font-size: 15px;
}

.pdf-filter-button {
    background: var(--primary-color);
    color: white;
}

.pdf-filter-button:hover {
    background: var(--button-hover);
    transform: translateY(-2px);
}

.pdf-reset-button {
    background: #f0f0f0;
    color: var(--text-color);
}

.pdf-reset-button:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
}

/* Grille de documents */
.pdf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.pdf-card {
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid #eee;
    opacity: 1; /* Modifié pour être visible par défaut */
}

.pdf-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.pdf-thumbnail {
    height: 250px;
    overflow: hidden;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.pdf-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.pdf-card:hover .pdf-thumbnail img {
    transform: scale(1.05);
}

.pdf-no-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), #254374);
    color: white;
    font-size: 40px;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.pdf-type-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 6px 12px;
    border-radius: 20px;
    color: white;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    background-color: var(--secondary-color);
}

.pdf-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.pdf-content h3 {
    margin: 0 0 15px;
    font-size: 18px;
    color: var(--primary-color);
    line-height: 1.4;
    font-weight: 600;
}

.pdf-meta {
    margin: 8px 0;
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.pdf-view-button {
    margin-top: auto;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 12px 18px;
    border-radius: 4px;
    text-align: center;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
}

.pdf-view-button:hover {
    background: var(--button-hover);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

/* Type badges avec couleurs spécifiques */
.pdf-card[data-type="these"] .pdf-type-badge {
    background-color: #2ecc71; /* Vert */
}

.pdf-card[data-type="article"] .pdf-type-badge {
    background-color: var(--secondary-color); /* Jaune */
}

.pdf-card[data-type="ouvrage"] .pdf-type-badge {
    background-color: #e74c3c; /* Rouge */
}

.pdf-card[data-type="chapitre"] .pdf-type-badge {
    background-color: #9b59b6; /* Violet */
}

/* Message d'erreur et chargement */
.error-message {
    color: #e74c3c;
    font-weight: 500;
    text-align: center;
    padding: 20px;
}

.pdf-no-results {
    text-align: center;
    padding: 60px 30px;
    color: #666;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
}

.pdf-no-results svg {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.pdf-no-results p {
    font-size: 16px;
    margin: 0;
}

.pdf-loading {
    text-align: center;
    padding: 40px;
}

.pdf-loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(68, 108, 179, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

/* Responsive */
@media screen and (max-width: 768px) {
    .filter-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .pdf-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media screen and (max-width: 480px) {
    .pdf-documents {
        padding: 15px;
    }
    
    .pdf-filters {
        padding: 15px;
    }
    
    .pdf-card {
        width: 100%;
    }
    
    .pdf-thumbnail {
        height: 200px;
    }
}