/* ============================================
   BIBLIOTHÈQUE NUMÉRIQUE UAGO
   Design Professionnel - Couleurs Officielles
   ============================================ */

/* ============================================
   1. VARIABLES & RESET
   ============================================ */
:root {
    /* Couleurs principales UAGO */
    --uago-blue-dark: #0a2a4a;
    --uago-blue-medium: #1a4a7a;
    --uago-blue-light: #2a6a9a;
    --uago-blue-pale: #e8eef4;
    --uago-gold: #c49b5c;
    --uago-gold-light: #d4ab6c;
    --uago-gold-dark: #a07d3a;
    --uago-gold-pale: #f5ede0;
    
    /* Couleurs neutres */
    --uago-white: #ffffff;
    --uago-gray-light: #f8f9fa;
    --uago-gray: #e9ecef;
    --uago-gray-medium: #adb5bd;
    --uago-gray-dark: #495057;
    --uago-text: #212529;
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(10, 42, 74, 0.08);
    --shadow-md: 0 4px 20px rgba(10, 42, 74, 0.12);
    --shadow-lg: 0 8px 40px rgba(10, 42, 74, 0.18);
    --shadow-gold: 0 4px 20px rgba(196, 155, 92, 0.3);
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--uago-gray-light);
    color: var(--uago-text);
    line-height: 1.6;
}

/* ============================================
   2. EN-TÊTE & NAVIGATION
   ============================================ */
.header-uago {
    background: linear-gradient(135deg, var(--uago-blue-dark) 0%, var(--uago-blue-medium) 100%);
    padding: 12px 0;
    border-bottom: 4px solid var(--uago-gold);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-uago .logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-uago .logo-img {
    height: 55px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    transition: var(--transition-smooth);
}

.header-uago .logo-img:hover {
    transform: scale(1.05);
}

.header-uago .logo-text {
    color: var(--uago-white);
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.5px;
}

.header-uago .logo-text small {
    display: block;
    font-size: 0.7rem;
    font-weight: 300;
    color: var(--uago-gold);
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Navigation */
.nav-uago {
    background-color: var(--uago-blue-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-uago .nav-link {
    color: rgba(255, 255, 255, 0.75) !important;
    font-weight: 500;
    padding: 14px 22px !important;
    transition: var(--transition-smooth);
    position: relative;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
}

.nav-uago .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--uago-gold);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-uago .nav-link:hover {
    color: var(--uago-white) !important;
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-uago .nav-link:hover::after {
    width: 60%;
}

.nav-uago .nav-link.active {
    color: var(--uago-white) !important;
    background-color: rgba(196, 155, 92, 0.15);
}

.nav-uago .nav-link.active::after {
    width: 60%;
    background: var(--uago-gold);
}

/* ============================================
   3. BANNIÈRE HERO
   ============================================ */
.hero-banner {
    background: linear-gradient(135deg, var(--uago-blue-dark) 0%, var(--uago-blue-light) 100%);
    padding: 70px 0 60px;
    color: var(--uago-white);
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -15%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(196, 155, 92, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-banner .hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    line-height: 1.2;
}

.hero-banner .hero-title span {
    color: var(--uago-gold);
    position: relative;
}

.hero-banner .hero-title span::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--uago-gold);
    border-radius: 2px;
    opacity: 0.3;
}

.hero-banner .hero-subtitle {
    font-size: 1.15rem;
    opacity: 0.85;
    position: relative;
    z-index: 1;
    max-width: 600px;
    line-height: 1.7;
}

/* Statistiques Hero */
.hero-banner .stat-box {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px 15px;
    transition: var(--transition-smooth);
    position: relative;
    z-index: 1;
}

.hero-banner .stat-box:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.hero-banner .stat-box .stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--uago-gold);
    margin-bottom: 2px;
    line-height: 1;
}

.hero-banner .stat-box .stat-label {
    font-size: 0.8rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================
   4. BARRE DE RECHERCHE
   ============================================ */
.search-box {
    background: var(--uago-white);
    border-radius: 60px;
    padding: 6px;
    box-shadow: var(--shadow-lg);
    margin: -25px 0 30px;
    position: relative;
    z-index: 10;
    border: 2px solid rgba(196, 155, 92, 0.15);
    transition: var(--transition-smooth);
}

.search-box:focus-within {
    border-color: var(--uago-gold);
    box-shadow: var(--shadow-gold);
}

.search-box .form-control {
    border: none;
    border-radius: 60px 0 0 60px;
    padding: 16px 30px;
    font-size: 1rem;
    background: transparent;
}

.search-box .form-control:focus {
    box-shadow: none;
    border-color: transparent;
}

.search-box .form-control::placeholder {
    color: var(--uago-gray-medium);
    font-style: italic;
}

.search-box .btn-search {
    border-radius: 60px;
    padding: 16px 35px;
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    border: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.search-box .btn-search:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.search-box .btn-search:active {
    transform: translateY(0);
}

/* ============================================
   5. FILTRES
   ============================================ */
.filters-section {
    background: var(--uago-white);
    border-radius: 16px;
    padding: 20px 25px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 35px;
    border: 1px solid var(--uago-gray);
    transition: var(--transition-smooth);
}


/* ============================================
   PAGE DE DÉTAIL - DESIGN ÉLÉGANT
   ============================================ */

.detail-page {
    background: var(--uago-gray-light);
    min-height: calc(100vh - 300px);
}

/* ===== FIL D'ARIANE ===== */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
    font-size: 0.85rem;
}

.breadcrumb-item a {
    color: var(--uago-gold);
    transition: var(--transition-smooth);
}

.breadcrumb-item a:hover {
    color: var(--uago-gold-dark);
}

.breadcrumb-item.active {
    color: var(--uago-gray-medium);
}

/* ===== CARTE COUVERTURE ===== */
.detail-cover-card {
    background: var(--uago-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--uago-gray);
    transition: var(--transition-smooth);
}

.detail-cover-card:hover {
    box-shadow: var(--shadow-lg);
}

.cover-wrapper {
    position: relative;
    padding-top: 140%;
    background: var(--uago-gray-light);
    overflow: hidden;
}

.cover-wrapper .cover-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.cover-wrapper:hover .cover-image {
    transform: scale(1.03);
}

.cover-wrapper .cover-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(196, 155, 92, 0.3);
    backdrop-filter: blur(4px);
}

.cover-actions {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cover-actions .btn {
    padding: 12px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.cover-actions .btn-gold {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    border: none;
}

.cover-actions .btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.cover-actions .btn-outline-gold {
    border: 2px solid var(--uago-gold);
    color: var(--uago-gold-dark);
    background: transparent;
}

.cover-actions .btn-outline-gold:hover {
    background: var(--uago-gold);
    color: var(--uago-white);
}

.cover-actions .btn-outline-danger {
    border: 2px solid #dc3545;
    color: #dc3545;
    background: transparent;
}

.cover-actions .btn-outline-danger:hover {
    background: #dc3545;
    color: white;
}

.cover-actions .btn-outline-primary {
    border: 2px solid #0d6efd;
    color: #0d6efd;
    background: transparent;
}

.cover-actions .btn-outline-primary:hover {
    background: #0d6efd;
    color: white;
}

/* ===== CARTE INFORMATIONS ===== */
.detail-info-card {
    background: var(--uago-white);
    border-radius: 16px;
    padding: 30px 35px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--uago-gray);
    height: 100%;
    transition: var(--transition-smooth);
}

.detail-info-card:hover {
    box-shadow: var(--shadow-lg);
}

/* En-tête des infos */
.info-header {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--uago-gray);
}

.detail-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--uago-blue-dark);
    line-height: 1.3;
    margin-bottom: 8px;
}

.detail-author {
    font-size: 1rem;
    color: var(--uago-gray-dark);
    margin: 0;
}

.detail-author i {
    color: var(--uago-gold);
    font-size: 1.2rem;
}

.detail-author strong {
    color: var(--uago-blue-dark);
}

/* Métadonnées */
.info-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px 25px;
    padding: 15px 0;
    border-bottom: 1px solid var(--uago-gray);
    margin-bottom: 20px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--uago-gray-dark);
}

.meta-item i {
    font-size: 1rem;
    width: 18px;
    color: var(--uago-gold);
}

.meta-item .badge-gold {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: white;
    padding: 4px 14px;
    border-radius: 20px;
    font-weight: 600;
}

/* Résumé */
.info-resume {
    margin-bottom: 20px;
}

.info-resume h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--uago-blue-dark);
    margin-bottom: 12px;
}

.info-resume h5 i {
    color: var(--uago-gold);
    margin-right: 8px;
}

.resume-content {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--uago-text);
    background: var(--uago-gray-light);
    padding: 20px 25px;
    border-radius: 12px;
    border-left: 4px solid var(--uago-gold);
    max-height: 250px;
    overflow-y: auto;
}

/* Pied des infos */
.info-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 20px 30px;
    padding-top: 18px;
    border-top: 1px solid var(--uago-gray);
    font-size: 0.85rem;
    color: var(--uago-gray-medium);
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-item i {
    font-size: 0.9rem;
}

/* ===== RESPONSIVE ===== */

/* Tablettes */
@media (max-width: 992px) {
    .detail-title {
        font-size: 1.4rem;
    }
    
    .detail-info-card {
        padding: 25px;
    }
    
    .cover-wrapper {
        padding-top: 120%;
    }
}

/* Mobiles */
@media (max-width: 768px) {
    .detail-page {
        padding-top: 10px;
    }
    
    .detail-title {
        font-size: 1.2rem;
    }
    
    .detail-info-card {
        padding: 20px;
        margin-top: 20px;
    }
    
    .info-meta {
        gap: 10px 15px;
    }
    
    .meta-item {
        font-size: 0.8rem;
    }
    
    .resume-content {
        font-size: 0.85rem;
        padding: 15px 18px;
        max-height: 200px;
    }
    
    .info-footer {
        gap: 12px 20px;
        font-size: 0.75rem;
    }
    
    .cover-wrapper {
        padding-top: 100%;
    }
    
    .cover-actions .btn {
        font-size: 0.8rem;
        padding: 10px;
    }
}

/* Très petits écrans */
@media (max-width: 480px) {
    .detail-title {
        font-size: 1rem;
    }
    
    .detail-author {
        font-size: 0.85rem;
    }
    
    .info-meta {
        gap: 8px 12px;
    }
    
    .meta-item {
        font-size: 0.7rem;
    }
    
    .meta-item i {
        font-size: 0.8rem;
        width: 14px;
    }
    
    .detail-info-card {
        padding: 15px;
    }
    
    .resume-content {
        font-size: 0.8rem;
        padding: 12px 15px;
        max-height: 150px;
    }
    
    .cover-actions {
        padding: 15px;
        gap: 8px;
    }
    
    .cover-actions .btn {
        font-size: 0.75rem;
        padding: 8px;
    }
    
    .info-footer {
        font-size: 0.7rem;
        gap: 8px 15px;
    }
    
    .breadcrumb {
        font-size: 0.75rem;
    }
}

/* ===== SCROLLBAR PERSONNALISÉE POUR LE RÉSUMÉ ===== */
.resume-content::-webkit-scrollbar {
    width: 5px;
}

.resume-content::-webkit-scrollbar-track {
    background: var(--uago-gray);
    border-radius: 10px;
}

.resume-content::-webkit-scrollbar-thumb {
    background: var(--uago-gold);
    border-radius: 10px;
}

.resume-content::-webkit-scrollbar-thumb:hover {
    background: var(--uago-gold-dark);
}

/* ===== ANIMATIONS ===== */
.detail-cover-card,
.detail-info-card {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.detail-cover-card {
    animation-delay: 0.1s;
}

.detail-info-card {
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.filters-section:hover {
    box-shadow: var(--shadow-md);
}

.filters-section .filter-label {
    font-weight: 600;
    color: var(--uago-blue-dark);
    margin-right: 15px;
    font-size: 0.9rem;
}

.filters-section .filter-btn {
    border: 2px solid var(--uago-gray);
    background: var(--uago-white);
    color: var(--uago-text);
    padding: 8px 22px;
    border-radius: 30px;
    margin: 3px 5px;
    transition: var(--transition-smooth);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.filters-section .filter-btn:hover {
    border-color: var(--uago-gold);
    color: var(--uago-gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(196, 155, 92, 0.15);
}

.filters-section .filter-btn.active {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    border-color: var(--uago-gold);
    color: var(--uago-white);
    box-shadow: var(--shadow-gold);
}

.filters-section .filter-btn i {
    font-size: 0.8rem;
}

/* ============================================
   6. CARTES DES DOCUMENTS - DESIGN MODERNE
   ============================================ */
.document-card {
    background: var(--uago-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    height: 100%;
    border: 1px solid var(--uago-gray);
    position: relative;
}

.document-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(196, 155, 92, 0.2);
}

/* Couverture */
.document-card .card-cover {
    height: 280px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--uago-blue-pale), var(--uago-gray-light));
    position: relative;
}

.document-card .card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-bounce);
}

.document-card:hover .card-cover img {
    transform: scale(1.08);
}

/* Badge type de document */
.document-card .card-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    padding: 5px 16px;
    border-radius: 30px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: 0 4px 12px rgba(196, 155, 92, 0.3);
    backdrop-filter: blur(4px);
}

/* Corps de la carte */
.document-card .card-body {
    padding: 22px 20px 18px;
    background: var(--uago-white);
}

.document-card .card-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--uago-blue-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    min-height: 48px;
}

.document-card .card-title a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.document-card .card-title a:hover {
    color: var(--uago-gold);
}

.document-card .card-author {
    color: var(--uago-gray-dark);
    font-size: 0.85rem;
    margin-bottom: 2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.document-card .card-author i {
    color: var(--uago-gold);
    font-size: 0.75rem;
    width: 16px;
}

.document-card .card-year {
    color: var(--uago-gray-medium);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.document-card .card-year i {
    font-size: 0.7rem;
    width: 16px;
}

/* Actions de la carte */
.document-card .card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 2px solid var(--uago-gray);
    margin-top: 12px;
}

/* Bouton Like */
.document-card .btn-like {
    background: none;
    border: none;
    color: var(--uago-gray-medium);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    padding: 6px 14px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--uago-gray-light);
    font-weight: 500;
}

.document-card .btn-like:hover {
    background: #fee;
    color: #dc3545;
    transform: scale(1.05);
}

.document-card .btn-like .count {
    font-size: 0.85rem;
    color: var(--uago-text);
    font-weight: 600;
}

.document-card .btn-like.liked {
    color: #dc3545;
    animation: heartBeat 0.4s ease;
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    25% { transform: scale(1.3); }
    50% { transform: scale(0.9); }
    75% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Bouton Voir */
.document-card .btn-outline-gold {
    border: 2px solid var(--uago-gold);
    color: var(--uago-gold-dark);
    background: transparent;
    padding: 6px 18px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.8rem;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.document-card .btn-outline-gold:hover {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

/* ============================================
   7. MESSAGE "AUCUN RÉSULTAT"
   ============================================ */
.empty-state {
    padding: 80px 20px;
    text-align: center;
}

.empty-state .empty-icon {
    font-size: 4rem;
    color: var(--uago-gray);
    margin-bottom: 20px;
    display: block;
}

.empty-state h4 {
    color: var(--uago-blue-dark);
    font-weight: 700;
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--uago-gray-medium);
    font-size: 1.05rem;
}

/* ============================================
   8. ANIMATIONS
   ============================================ */
.document-card {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.document-card:nth-child(1) { animation-delay: 0.05s; }
.document-card:nth-child(2) { animation-delay: 0.10s; }
.document-card:nth-child(3) { animation-delay: 0.15s; }
.document-card:nth-child(4) { animation-delay: 0.20s; }
.document-card:nth-child(5) { animation-delay: 0.25s; }
.document-card:nth-child(6) { animation-delay: 0.30s; }
.document-card:nth-child(7) { animation-delay: 0.35s; }
.document-card:nth-child(8) { animation-delay: 0.40s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   9. FOOTER
   ============================================ */
.footer-uago {
    background: linear-gradient(135deg, var(--uago-blue-dark) 0%, #060f1a 100%);
    color: rgba(255, 255, 255, 0.8);
    padding: 50px 0 20px;
    margin-top: 50px;
    border-top: 4px solid var(--uago-gold);
}

.footer-uago h5 {
    color: var(--uago-gold);
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

.footer-uago a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-uago a:hover {
    color: var(--uago-gold);
    padding-left: 5px;
}

.footer-uago .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
}

.footer-uago .social-links a:hover {
    background: var(--uago-gold);
    color: var(--uago-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
}

.footer-uago .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    margin-top: 30px;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   10. RESPONSIVE DESIGN
   ============================================ */

/* Tablettes */
@media (max-width: 992px) {
    .hero-banner .hero-title {
        font-size: 2.2rem;
    }
    
    .document-card .card-cover {
        height: 230px;
    }
    
    .search-box {
        margin-top: -20px;
    }
}

/* Mobiles */
@media (max-width: 768px) {
    .header-uago .logo-text {
        font-size: 0.9rem;
    }
    
    .header-uago .logo-img {
        height: 40px;
    }
    
    .hero-banner {
        padding: 40px 0 35px;
    }
    
    .hero-banner .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-banner .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .hero-banner .stat-box .stat-number {
        font-size: 1.6rem;
    }
    
    .search-box {
        margin-top: -15px;
        border-radius: 30px;
        padding: 4px;
    }
    
    .search-box .form-control {
        padding: 12px 20px;
        font-size: 0.9rem;
        border-radius: 30px 0 0 30px;
    }
    
    .search-box .btn-search {
        padding: 12px 18px;
        font-size: 0.85rem;
        border-radius: 30px;
    }
    
    .filters-section {
        padding: 15px;
    }
    
    .filters-section .filter-btn {
        padding: 5px 14px;
        font-size: 0.75rem;
        margin: 2px 3px;
    }
    
    .document-card .card-cover {
        height: 200px;
    }
    
    .document-card .card-title {
        font-size: 0.95rem;
        min-height: 40px;
    }
    
    .document-card .card-body {
        padding: 16px 15px 14px;
    }
    
    .footer-uago {
        padding: 30px 0 15px;
    }
}

/* Très petits écrans */
@media (max-width: 480px) {
    .header-uago .logo-text {
        font-size: 0.75rem;
    }
    
    .header-uago .logo-img {
        height: 35px;
    }
    
    .hero-banner .hero-title {
        font-size: 1.4rem;
    }
    
    .hero-banner .stat-box .stat-number {
        font-size: 1.3rem;
    }
    
    .document-card .card-cover {
        height: 170px;
    }
    
    .document-card .card-actions {
        flex-direction: column;
        gap: 8px;
    }
    
    .document-card .btn-like {
        width: 100%;
        justify-content: center;
    }
    
    .document-card .btn-outline-gold {
        width: 100%;
        justify-content: center;
    }
    
    .search-box .btn-search span {
        display: none;
    }
    
    .search-box .btn-search i {
        font-size: 1.2rem;
    }
}

/* ============================================
   11. UTILITAIRES SPÉCIFIQUES
   ============================================ */
.text-gold {
    color: var(--uago-gold) !important;
}

.bg-gold {
    background: var(--uago-gold) !important;
}

.bg-gold-gradient {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark)) !important;
}

.shadow-gold {
    box-shadow: var(--shadow-gold) !important;
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--uago-gray-light);
}

::-webkit-scrollbar-thumb {
    background: var(--uago-gold);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--uago-gold-dark);
}

/* ============================================
   12. BOUTON GOLD GÉNÉRIQUE
   ============================================ */
.btn-gold {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    border: none;
    padding: 10px 28px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
    color: var(--uago-white);
}

.btn-outline-gold {
    border: 2px solid var(--uago-gold);
    color: var(--uago-gold-dark);
    background: transparent;
    padding: 8px 24px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline-gold:hover {
    background: linear-gradient(135deg, var(--uago-gold), var(--uago-gold-dark));
    color: var(--uago-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

/* ============================================
   OPTIMISATIONS MOBILE SUPPLÉMENTAIRES
   ============================================ */

/* Amélioration du toucher sur mobile */
@media (hover: none) {
    .document-card:hover {
        transform: none;
    }
    
    .document-card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    .document-card .btn-like:active {
        transform: scale(0.9);
    }
    
    .filter-btn:active {
        transform: scale(0.95);
    }
}

/* Ajustement des marges pour mobile */
@media (max-width: 576px) {
    .container {
        padding-left: 12px;
        padding-right: 12px;
    }
    
    .row.g-4 {
        --bs-gutter-y: 1rem;
        --bs-gutter-x: 1rem;
    }
}

/* Amélioration de la lisibilité sur mobile */
@media (max-width: 480px) {
    .document-card .card-title {
        font-size: 0.9rem;
        min-height: 36px;
    }
    
    .document-card .card-author,
    .document-card .card-year {
        font-size: 0.75rem;
    }
    
    .document-card .btn-like {
        font-size: 0.9rem;
        padding: 4px 12px;
    }
    
    .document-card .btn-outline-gold {
        font-size: 0.7rem;
        padding: 4px 14px;
    }
}


/* ============================================
   COMPLÉMENTS POUR LA PAGE DE DÉTAIL
   ============================================ */

/* Badge Protection */
.cover-badge.protection-badge {
    top: 65px;
    background: rgba(220, 53, 69, 0.9);
    backdrop-filter: blur(4px);
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

.cover-badge.protection-badge i {
    margin-right: 4px;
}

/* DOI Display */
.doi-display {
    background: var(--uago-gray-light);
    border-radius: 8px;
    padding: 8px 12px;
    border: 1px solid var(--uago-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.doi-display .badge {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    padding: 4px 12px;
    word-break: break-all;
}

.doi-display .btn {
    padding: 2px 8px;
    font-size: 0.7rem;
}

/* Alertes dans les actions */
.cover-actions .alert-warning {
    background: #fff3cd;
    border: 1px solid #ffc107;
    color: #856404;
    border-radius: 8px;
    font-size: 0.8rem;
}

/* Meta Item avec DOI */
.meta-item .text-muted {
    font-size: 0.75rem;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

/* Footer items avec statut */
.footer-item .text-warning {
    color: #ffc107 !important;
}

.footer-item .text-danger {
    color: #dc3545 !important;
}

/* ============================================
   ANIMATION DE COPIE DOI
   ============================================ */
@keyframes copyPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.copy-success {
    animation: copyPulse 0.3s ease;
}

/* ============================================
   RESPONSIVE SUPPLÉMENTAIRE
   ============================================ */
@media (max-width: 768px) {
    .doi-display {
        flex-direction: column;
        gap: 5px;
        padding: 10px;
    }
    
    .doi-display .badge {
        font-size: 0.7rem;
        max-width: 100%;
        word-break: break-all;
    }
    
    .cover-badge.protection-badge {
        top: 55px;
        font-size: 0.6rem;
        padding: 3px 12px;
    }
}

@media (max-width: 480px) {
    .meta-item .text-muted {
        max-width: 80px;
    }
    
    .cover-actions .alert-warning {
        font-size: 0.7rem;
        padding: 6px;
    }
}