/* Variables CSS */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #d97706;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Reset et styles de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}

/* Navigation */
.main-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.nav-btn {
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.nav-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Section de recherche */
.search-section {
    background: var(--surface-color);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.search-container {
    position: relative;
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    padding: 15px 50px 15px 20px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.clear-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.clear-btn:hover {
    background-color: var(--border-color);
}

/* Filtres */
.filters-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.filter-group label {
    font-weight: 500;
    color: var(--text-color);
    font-size: 14px;
}

.filter-select,
.filter-input {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--surface-color);
    transition: border-color 0.2s ease;
}

.filter-select:focus,
.filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Conteneur des résultats */
.results-container {
    background: var(--surface-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* Catégories */
.category-section {
    border-bottom: 1px solid var(--border-color);
}

.category-section:last-child {
    border-bottom: none;
}

.category-header {
    padding: 20px 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 18px;
    transition: background 0.2s ease;
}

.category-header:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
}

.category-toggle {
    font-size: 24px;
    transition: transform 0.3s ease;
}

.category-content {
    display: none;
    padding: 0;
}

.category-content.expanded {
    display: block;
}

.category-header.expanded .category-toggle {
    transform: rotate(180deg);
}

/* Éléments de document */
.document-item {
    padding: 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 25px;
    align-items: flex-start;
    transition: background-color 0.2s ease;
}

.document-item:hover {
    background-color: #f8fafc;
}

.document-item:last-child {
    border-bottom: none;
}

.document-info {
    flex: 1;
    min-width: 0;
}

.document-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 15px;
    cursor: pointer;
}

.document-title:hover {
    color: var(--primary-hover);
}

.document-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    font-size: 14px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-label {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    color: var(--text-color);
}

.document-image {
    flex-shrink: 0;
    width: 200px;
}

.document-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow);
}

.document-image img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.document-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn-edit,
.btn-delete {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-edit {
    background: var(--warning-color);
    color: white;
}

.btn-edit:hover {
    background: #b45309;
}

.btn-delete {
    background: var(--danger-color);
    color: white;
}

.btn-delete:hover {
    background: #b91c1c;
}

/* Formulaires */
.form-view,
.lists-view {
    background: var(--surface-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
}

.form-container h2,
.lists-container h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-color);
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.btn-primary,
.btn-secondary,
.btn-add {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-add {
    background: var(--success-color);
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-add:hover {
    background: #15803d;
}

/* Sélecteur de fichier */
.file-upload-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-file-select {
    padding: 12px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    align-self: flex-start;
}

.btn-file-select:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.selected-file-name {
    font-size: 14px;
    color: var(--text-muted);
    font-style: italic;
    padding: 8px 0;
}

.selected-file-name.has-file {
    color: var(--success-color);
    font-style: normal;
    font-weight: 500;
}

.file-preview {
    margin-top: 10px;
    max-width: 200px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.file-preview img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.file-info {
    background: var(--background-color);
    padding: 10px;
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 5px;
}

.file-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.btn-remove-file {
    padding: 6px 12px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s ease;
}

.btn-remove-file:hover {
    background: #b91c1c;
}

/* Gestion des listes */
.list-management {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.list-section {
    background: var(--background-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.list-section h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 18px;
}

.list-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.list-controls input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.editable-list {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 5px;
}

.list-item-actions {
    display: flex;
    gap: 5px;
}

.btn-edit-item,
.btn-delete-item {
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.btn-edit-item {
    background: var(--warning-color);
    color: white;
}

.btn-delete-item {
    background: var(--danger-color);
    color: white;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    background: var(--surface-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-lg);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    z-index: 1001;
}

.close-modal:hover {
    color: var(--text-color);
}

#modal-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
}

#modal-caption {
    text-align: center;
    margin-top: 15px;
    font-weight: 500;
    color: var(--text-color);
}

/* Classes utilitaires */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mb-20 {
    margin-bottom: 20px;
}

/* Messages d'état */
.message {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.message.warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fed7aa;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .main-nav {
        flex-direction: column;
        gap: 10px;
    }
    
    .filters-container {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .document-item {
        flex-direction: column;
        gap: 15px;
    }
    
    .document-image {
        width: 100%;
        align-self: center;
    }
    
    .document-image img {
        height: 400px;
    }
    
    .list-management {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .search-section,
    .form-view,
    .lists-view {
        padding: 20px;
    }
    
    .document-item {
        padding: 20px;
    }
    
    .document-details {
        grid-template-columns: 1fr;
    }
}