/* ========================================
   KB KNOWLEDGE BASE - FRONTEND CSS
   Design Mobile-First Professionale
   ======================================== */

/* Reset e Base - Mobile First */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    margin: 0;
    padding: 0;
    background: #f7fafc;
    font-size: 16px;
}

/* Mobile-first responsive breakpoints */
@media (min-width: 480px) { /* Small phones */
    body { font-size: 16px; }
}

@media (min-width: 768px) { /* Tablets */
    body { font-size: 17px; }
}

@media (min-width: 1024px) { /* Desktop */
    body { font-size: 18px; }
}

/* Palette Colori Unificata */
:root {
    --kb-primary: #667eea;
    --kb-primary-dark: #5a67d8;
    --kb-secondary: #4a5568;
    --kb-success: #48bb78;
    --kb-warning: #ed8936;
    --kb-danger: #f56565;
    --kb-info: #4299e1;
    --kb-light: #f7fafc;
    --kb-dark: #2d3748;
    --kb-gray: #718096;
    --kb-border: #e2e8f0;
    --kb-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --kb-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --kb-radius: 12px;
    --kb-radius-sm: 8px;
    --kb-spacing: 16px;
    --kb-spacing-lg: 24px;
}

/* Container principale */
.kb-frontend {
    max-width: 100%;
    margin: 0 auto;
    padding: var(--kb-spacing);
    background: #ffffff;
    border-radius: var(--kb-radius);
    box-shadow: var(--kb-shadow);
}

/* Header e navigazione */
.kb-header {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    padding: var(--kb-spacing-lg);
    border-radius: var(--kb-radius) var(--kb-radius) 0 0;
    margin: calc(-1 * var(--kb-spacing)) calc(-1 * var(--kb-spacing)) var(--kb-spacing-lg) calc(-1 * var(--kb-spacing));
}

/* Bottoni di navigazione KB */
.kb-nav-buttons {
    display: flex;
    gap: var(--kb-spacing);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--kb-spacing-lg) 0;
    padding: var(--kb-spacing);
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--kb-radius);
    border: 2px solid var(--kb-border);
}

.kb-nav-button-secondary {
    background: linear-gradient(135deg, var(--kb-secondary) 0%, #2d3748 100%) !important;
    color: white !important;
}

.kb-nav-button-secondary:hover {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%) !important;
    color: white !important;
}

.kb-nav-button-primary {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%) !important;
    color: white !important;
    font-weight: 600;
}

.kb-nav-button-primary:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%) !important;
    color: white !important;
}

.kb-header h1 {
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
}

.kb-nav {
    display: flex;
    gap: var(--kb-spacing);
    justify-content: center;
    flex-wrap: wrap;
}

.kb-nav-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    border-radius: var(--kb-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    min-height: 44px;
    border: 2px solid transparent;
}

.kb-nav-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.kb-nav-button.active {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
}

/* Header tassonomia */
.kb-taxonomy-header {
    text-align: center;
    padding: var(--kb-spacing-lg);
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--kb-radius);
    margin-bottom: var(--kb-spacing-lg);
    border: 2px solid var(--kb-border);
}

.kb-taxonomy-header h1 {
    color: var(--kb-dark);
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 2rem;
    font-weight: 700;
}

.kb-taxonomy-description {
    color: var(--kb-gray);
    font-size: 1.1rem;
    margin: 0;
    font-style: italic;
}

/* Sezione di ricerca */
.kb-search-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--kb-spacing-lg);
    border-radius: var(--kb-radius);
    margin-bottom: var(--kb-spacing-lg);
    border: 2px solid var(--kb-border);
}

.kb-search-form {
    display: flex;
    gap: var(--kb-spacing);
    flex-wrap: wrap;
    align-items: end;
}

.kb-search-input {
    flex: 1;
    min-width: 200px;
    padding: 14px 16px;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.kb-search-input:focus {
    outline: none;
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.kb-search-button {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: var(--kb-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.kb-search-button:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%);
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow-lg);
}

/* Filtri */
.kb-filters {
    display: flex;
    gap: var(--kb-spacing);
    margin: var(--kb-spacing) 0;
    flex-wrap: wrap;
}

.kb-filter-select {
    flex: 1;
    min-width: 150px;
    padding: 12px 16px;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    font-size: 0.9rem;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.kb-filter-select:focus {
    outline: none;
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Griglia articoli */
.kb-articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--kb-spacing-lg);
    margin: var(--kb-spacing-lg) 0;
}

@media (min-width: 768px) {
    .kb-articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .kb-articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Card articolo */
.kb-article-card {
    background: #ffffff;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--kb-shadow);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.kb-article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--kb-shadow-lg);
    border-color: var(--kb-primary);
}

.kb-article-card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--kb-spacing);
    border-bottom: 1px solid var(--kb-border);
}

.kb-article-card-title {
    margin: 0 0 8px 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--kb-dark);
    line-height: 1.3;
}

.kb-article-card-meta {
    display: flex;
    gap: var(--kb-spacing);
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--kb-gray);
}

.kb-article-card-body {
    padding: var(--kb-spacing);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.kb-article-card-excerpt {
    color: var(--kb-secondary);
    line-height: 1.6;
    margin-bottom: var(--kb-spacing);
    flex: 1;
}

.kb-article-card-categories {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: var(--kb-spacing);
}

.kb-article-category {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.kb-article-category:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%);
    transform: translateY(-1px);
    color: white;
}

.kb-article-card-footer {
    padding: var(--kb-spacing);
    background: #f8f9fa;
    border-top: 1px solid var(--kb-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--kb-spacing);
}

.kb-read-more {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: var(--kb-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
}

.kb-read-more:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%);
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow);
    color: white;
}

/* Badge di stato e priorità */
.kb-status-badge,
.kb-priority-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.kb-status-confirmed {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border: 1px solid #c3e6cb;
}

.kb-status-partial {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
    border: 1px solid #ffeaa7;
}

.kb-status-obsolete {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.kb-priority-critical {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.kb-priority-high {
    background: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 100%);
    color: #856404;
    border: 1px solid #fdcb6e;
}

.kb-priority-medium {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    color: #ffffff;
    border: 1px solid #0984e3;
}

.kb-priority-low {
    background: linear-gradient(135deg, #00b894 0%, #00a085 100%);
    color: #ffffff;
    border: 1px solid #00a085;
}

/* Messaggio nessun articolo */
.kb-no-articles {
    text-align: center;
    padding: var(--kb-spacing-lg);
    color: var(--kb-gray);
    font-size: 1.1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--kb-radius);
    border: 2px dashed var(--kb-border);
}

/* Paginazione */
.kb-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: var(--kb-spacing-lg) 0;
    flex-wrap: wrap;
}

.kb-pagination a,
.kb-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    color: var(--kb-secondary);
    text-decoration: none;
    font-weight: 600;
    min-width: 44px;
    min-height: 44px;
    transition: all 0.3s ease;
}

.kb-pagination a:hover {
    background: var(--kb-primary);
    color: white;
    border-color: var(--kb-primary);
    transform: translateY(-2px);
}

.kb-pagination .current {
    background: var(--kb-primary);
    color: white;
    border-color: var(--kb-primary);
}

/* Risultati di ricerca */
.kb-search-results {
    margin: var(--kb-spacing-lg) 0;
}

.kb-search-highlight {
    background: #fff3cd;
    padding: 2px 4px;
    border-radius: 4px;
    font-weight: 600;
}

/* Loading states */
.kb-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--kb-spacing-lg);
    color: var(--kb-gray);
}

.kb-loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--kb-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

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

/* Template articolo singolo */
.kb-article-container {
    max-width: 100%;
    margin: 0 auto;
    background: #ffffff;
    border-radius: var(--kb-radius);
    box-shadow: var(--kb-shadow);
    overflow: hidden;
}

.kb-article-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--kb-spacing-lg);
    padding: var(--kb-spacing-lg);
}

@media (min-width: 1024px) {
    .kb-article-main {
        grid-template-columns: 2fr 1fr;
    }
}

.kb-content-section {
    background: #ffffff;
    border-radius: var(--kb-radius);
    padding: var(--kb-spacing-lg);
    border: 2px solid var(--kb-border);
}

.kb-content-body {
    line-height: 1.8;
    color: var(--kb-secondary);
    font-size: 1.1rem;
}

.kb-content-body h1,
.kb-content-body h2,
.kb-content-body h3,
.kb-content-body h4,
.kb-content-body h5,
.kb-content-body h6 {
    color: var(--kb-dark);
    margin: var(--kb-spacing-lg) 0 var(--kb-spacing) 0;
    font-weight: 700;
}

.kb-content-body p {
    margin-bottom: var(--kb-spacing);
}

.kb-content-body ul,
.kb-content-body ol {
    margin-bottom: var(--kb-spacing);
    padding-left: var(--kb-spacing-lg);
}

.kb-content-body li {
    margin-bottom: 8px;
}

.kb-content-body blockquote {
    border-left: 4px solid var(--kb-primary);
    padding-left: var(--kb-spacing);
    margin: var(--kb-spacing-lg) 0;
    font-style: italic;
    color: var(--kb-gray);
    background: #f8f9fa;
    padding: var(--kb-spacing);
    border-radius: 0 var(--kb-radius-sm) var(--kb-radius-sm) 0;
}

.kb-content-body code {
    background: #f1f3f4;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--kb-danger);
}

.kb-content-body pre {
    background: #f8f9fa;
    padding: var(--kb-spacing);
    border-radius: var(--kb-radius-sm);
    overflow-x: auto;
    margin: var(--kb-spacing) 0;
    border: 1px solid var(--kb-border);
}

.kb-content-body pre code {
    background: none;
    padding: 0;
    color: var(--kb-dark);
}

/* Dettagli tecnici */
.kb-detail-item {
    display: flex;
    margin-bottom: var(--kb-spacing);
    padding: var(--kb-spacing);
    background: #f8f9fa;
    border-radius: var(--kb-radius-sm);
    border-left: 4px solid var(--kb-primary);
}

.kb-detail-item strong {
    min-width: 120px;
    color: var(--kb-dark);
    font-weight: 600;
    margin-right: var(--kb-spacing);
}

.kb-detail-item span {
    color: var(--kb-secondary);
    flex: 1;
}

/* Soluzione passo-passo */
.kb-solution-steps {
    background: linear-gradient(135deg, #f0fff4 0%, #e6fffa 100%);
    border: 2px solid #9ae6b4;
    border-radius: var(--kb-radius);
    padding: var(--kb-spacing-lg);
    margin: var(--kb-spacing-lg) 0;
}

.kb-solution-steps h3 {
    color: #22543d;
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 1.25rem;
}

.kb-solution-steps ol {
    margin: 0;
    padding-left: var(--kb-spacing-lg);
    color: #22543d;
}

.kb-solution-steps li {
    margin-bottom: var(--kb-spacing);
    line-height: 1.6;
}

/* Sidebar */
.kb-article-sidebar {
    background: #f8f9fa;
    border-radius: var(--kb-radius);
    padding: var(--kb-spacing-lg);
    border: 2px solid var(--kb-border);
    height: fit-content;
}

.kb-article-sidebar h3 {
    color: var(--kb-dark);
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 1.1rem;
    font-weight: 600;
    padding-bottom: var(--kb-spacing);
    border-bottom: 2px solid var(--kb-border);
}

.kb-article-sidebar .kb-status-badge,
.kb-article-sidebar .kb-priority-badge {
    display: block;
    margin-bottom: var(--kb-spacing);
    text-align: center;
}

/* Azioni articolo */
.kb-actions {
    display: flex;
    gap: var(--kb-spacing);
    margin: var(--kb-spacing-lg) 0;
    flex-wrap: wrap;
}

.kb-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--kb-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    min-height: 44px;
    border: none;
    cursor: pointer;
}

.kb-action-btn:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%);
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow);
    color: white;
}

.kb-action-btn-secondary {
    background: linear-gradient(135deg, var(--kb-secondary) 0%, #2d3748 100%);
}

.kb-action-btn-secondary:hover {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    color: white;
}

/* Statistiche */
.kb-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--kb-spacing);
    margin: var(--kb-spacing-lg) 0;
}

.kb-stat-item {
    text-align: center;
    padding: var(--kb-spacing);
    background: white;
    border-radius: var(--kb-radius-sm);
    border: 2px solid var(--kb-border);
}

.kb-stat-item .number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--kb-primary);
    margin-bottom: 4px;
}

.kb-stat-item .label {
    font-size: 0.85rem;
    color: var(--kb-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Articoli correlati */
.kb-related-articles {
    margin: var(--kb-spacing-lg) 0;
}

.kb-related-articles h3 {
    color: var(--kb-dark);
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.kb-related-articles ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.kb-related-articles li {
    margin-bottom: var(--kb-spacing);
    padding: var(--kb-spacing);
    background: #f8f9fa;
    border-radius: var(--kb-radius-sm);
    border-left: 4px solid var(--kb-primary);
    transition: all 0.3s ease;
}

.kb-related-articles li:hover {
    background: #e3f2fd;
    transform: translateX(4px);
}

.kb-related-articles a {
    color: var(--kb-dark);
    text-decoration: none;
    font-weight: 600;
}

.kb-related-articles a:hover {
    color: var(--kb-primary);
}

/* Informazioni avanzate */
.kb-advanced-info {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--kb-radius);
    padding: var(--kb-spacing-lg);
    margin: var(--kb-spacing-lg) 0;
    border: 2px solid var(--kb-border);
}

.kb-advanced-info h3 {
    color: var(--kb-dark);
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 1.25rem;
    font-weight: 600;
    padding-bottom: var(--kb-spacing);
    border-bottom: 2px solid var(--kb-border);
}

.kb-info-row {
    display: flex;
    margin-bottom: var(--kb-spacing);
    padding: var(--kb-spacing);
    background: white;
    border-radius: var(--kb-radius-sm);
    border-left: 4px solid var(--kb-primary);
    flex-wrap: wrap;
    gap: var(--kb-spacing);
}

.kb-info-row strong {
    min-width: 150px;
    color: var(--kb-dark);
    font-weight: 600;
    flex-shrink: 0;
}

.kb-info-row span {
    color: var(--kb-secondary);
    flex: 1;
    min-width: 200px;
}

/* Badge versione e difficoltà */
.kb-version-badge {
    background: linear-gradient(135deg, var(--kb-info) 0%, #3182ce 100%);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kb-difficulty-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kb-difficulty-beginner {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    color: white;
}

.kb-difficulty-intermediate {
    background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
    color: white;
}

.kb-difficulty-advanced {
    background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
    color: white;
}

.kb-difficulty-expert {
    background: linear-gradient(135deg, #805ad5 0%, #6b46c1 100%);
    color: white;
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
    .kb-frontend {
        padding: var(--kb-spacing);
        margin: var(--kb-spacing);
    }
    
    .kb-header {
        margin: calc(-1 * var(--kb-spacing)) calc(-1 * var(--kb-spacing)) var(--kb-spacing) calc(-1 * var(--kb-spacing));
        padding: var(--kb-spacing);
    }
    
    .kb-header h1 {
        font-size: 1.5rem;
    }
    
    .kb-nav {
        flex-direction: column;
        gap: var(--kb-spacing);
    }
    
    .kb-nav-button {
        width: 100%;
        justify-content: center;
    }
    
    .kb-nav-buttons {
        flex-direction: column;
        gap: var(--kb-spacing);
    }
    
    .kb-nav-buttons .kb-nav-button {
        width: 100%;
        justify-content: center;
    }
    
    .kb-search-form {
        flex-direction: column;
        gap: var(--kb-spacing);
    }
    
    .kb-search-input {
        min-width: 100%;
    }
    
    .kb-search-button {
        width: 100%;
    }
    
    .kb-filters {
        flex-direction: column;
        gap: var(--kb-spacing);
    }
    
    .kb-filter-select {
        min-width: 100%;
    }
    
    .kb-articles-grid {
        grid-template-columns: 1fr;
        gap: var(--kb-spacing);
    }
    
    .kb-article-card {
        margin-bottom: var(--kb-spacing);
    }
    
    .kb-article-card-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .kb-read-more {
        width: 100%;
        justify-content: center;
    }
    
    .kb-article-main {
        grid-template-columns: 1fr;
        gap: var(--kb-spacing);
        padding: var(--kb-spacing);
    }
    
    .kb-content-section {
        padding: var(--kb-spacing);
    }
    
    .kb-article-sidebar {
        padding: var(--kb-spacing);
    }
    
    .kb-actions {
        flex-direction: column;
    }
    
    .kb-action-btn {
        width: 100%;
        justify-content: center;
    }
    
    .kb-stats {
        grid-template-columns: 1fr;
        gap: var(--kb-spacing);
    }
    
    .kb-info-row {
        flex-direction: column;
        gap: 8px;
    }
    
    .kb-info-row strong {
        min-width: auto;
    }
    
    .kb-info-row span {
        min-width: auto;
    }
    
    .kb-pagination {
        gap: 4px;
    }
    
    .kb-pagination a,
    .kb-pagination span {
        min-width: 40px;
        min-height: 40px;
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

/* Utility classes */
.kb-text-center { text-align: center; }
.kb-text-left { text-align: left; }
.kb-text-right { text-align: right; }
.kb-mb-0 { margin-bottom: 0; }
.kb-mb-1 { margin-bottom: var(--kb-spacing); }
.kb-mb-2 { margin-bottom: var(--kb-spacing-lg); }
.kb-mt-0 { margin-top: 0; }
.kb-mt-1 { margin-top: var(--kb-spacing); }
.kb-mt-2 { margin-top: var(--kb-spacing-lg); }
.kb-hidden { display: none; }
.kb-visible { display: block; }

/* Animazioni */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.kb-article-card {
    animation: fadeIn 0.5s ease-out;
}

/* Focus states per accessibilità */
.kb-nav-button:focus,
.kb-search-button:focus,
.kb-action-btn:focus,
.kb-read-more:focus {
    outline: 3px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
}

/* Modal di Condivisione */
.kb-share-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kb-share-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.kb-share-modal-content {
    position: relative;
    background: white;
    border-radius: var(--kb-radius);
    box-shadow: var(--kb-shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: kb-modal-slide-in 0.3s ease-out;
}

@keyframes kb-modal-slide-in {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.kb-share-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--kb-spacing-lg);
    border-bottom: 2px solid var(--kb-border);
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    border-radius: var(--kb-radius) var(--kb-radius) 0 0;
}

.kb-share-modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.kb-share-modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.kb-share-modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.kb-share-modal-body {
    padding: var(--kb-spacing-lg);
}

.kb-share-article-info {
    margin-bottom: var(--kb-spacing-lg);
    padding: var(--kb-spacing);
    background: #f8f9fa;
    border-radius: var(--kb-radius-sm);
    border-left: 4px solid var(--kb-primary);
}

.kb-share-article-info h4 {
    margin: 0 0 var(--kb-spacing) 0;
    color: var(--kb-dark);
    font-size: 1.1rem;
    font-weight: 600;
}

.kb-share-article-info p {
    margin: 0 0 var(--kb-spacing) 0;
    color: var(--kb-gray);
    font-size: 0.9rem;
    line-height: 1.5;
}

.kb-share-url {
    display: flex;
    gap: var(--kb-spacing);
    align-items: center;
}

.kb-share-url input {
    flex: 1;
    padding: 8px 12px;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    font-size: 0.9rem;
    background: white;
}

.kb-copy-url-btn {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: var(--kb-radius-sm);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    min-width: 44px;
    min-height: 44px;
}

.kb-copy-url-btn:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%);
    transform: translateY(-1px);
}

.kb-share-options h4 {
    margin: 0 0 var(--kb-spacing) 0;
    color: var(--kb-dark);
    font-size: 1rem;
    font-weight: 600;
}

.kb-share-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--kb-spacing);
}

@media (min-width: 480px) {
    .kb-share-buttons {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) {
    .kb-share-buttons {
        grid-template-columns: repeat(4, 1fr);
    }
}

.kb-share-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: var(--kb-spacing);
    background: white;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 80px;
    text-decoration: none;
    color: var(--kb-dark);
}

.kb-share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow);
    border-color: var(--kb-primary);
}

.kb-share-icon {
    font-size: 1.5rem;
}

.kb-share-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-align: center;
}

/* Colori specifici per le piattaforme */
.kb-share-whatsapp:hover {
    background: #25d366;
    color: white;
    border-color: #25d366;
}

.kb-share-email:hover {
    background: #ea4335;
    color: white;
    border-color: #ea4335;
}

.kb-share-sms:hover {
    background: #34a853;
    color: white;
    border-color: #34a853;
}

.kb-share-facebook:hover {
    background: #1877f2;
    color: white;
    border-color: #1877f2;
}

.kb-share-twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.kb-share-linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.kb-share-telegram:hover {
    background: #0088cc;
    color: white;
    border-color: #0088cc;
}

.kb-share-native:hover {
    background: var(--kb-primary);
    color: white;
    border-color: var(--kb-primary);
}

/* Blocco scroll quando il modal è aperto */
body.kb-modal-open {
    overflow: hidden;
}

/* Responsive per mobile */
@media (max-width: 768px) {
    .kb-share-modal-content {
        width: 95%;
        max-height: 90vh;
        margin: var(--kb-spacing);
    }
    
    .kb-share-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--kb-spacing);
    }
    
    .kb-share-btn {
        min-height: 70px;
        padding: var(--kb-spacing);
    }
    
    .kb-share-icon {
        font-size: 1.25rem;
    }
    
    .kb-share-label {
        font-size: 0.75rem;
    }
}

/* Pagina Creazione Articolo KB */
.kb-create-article {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: var(--kb-radius);
    box-shadow: var(--kb-shadow);
    overflow: hidden;
}

.kb-create-header {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
    padding: var(--kb-spacing-lg);
    text-align: center;
}

.kb-create-header h2 {
    margin: 0 0 var(--kb-spacing) 0;
    font-size: 1.75rem;
    font-weight: 700;
}

.kb-create-header p {
    margin: 0;
    font-size: 1.1rem;
    opacity: 0.9;
}

.kb-create-form {
    padding: var(--kb-spacing-lg);
}

.kb-form-section {
    margin-bottom: var(--kb-spacing-lg);
    padding: var(--kb-spacing-lg);
    background: #f8f9fa;
    border-radius: var(--kb-radius);
    border-left: 4px solid var(--kb-primary);
}

.kb-form-section h3 {
    margin: 0 0 var(--kb-spacing-lg) 0;
    color: var(--kb-dark);
    font-size: 1.25rem;
    font-weight: 600;
    padding-bottom: var(--kb-spacing);
    border-bottom: 2px solid var(--kb-border);
}

.kb-form-row {
    display: flex;
    gap: var(--kb-spacing);
    margin-bottom: var(--kb-spacing);
    flex-wrap: wrap;
}

.kb-form-field-full {
    flex: 1;
    min-width: 100%;
}

.kb-form-field-half {
    flex: 1;
    min-width: 300px;
}

.kb-form-field-full label,
.kb-form-field-half label {
    display: block;
    margin-bottom: 8px;
    color: var(--kb-dark);
    font-weight: 600;
    font-size: 0.9rem;
}

.kb-form-field-full input,
.kb-form-field-half input,
.kb-form-field-full textarea,
.kb-form-field-half textarea,
.kb-form-field-full select,
.kb-form-field-half select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.kb-form-field-full input:focus,
.kb-form-field-half input:focus,
.kb-form-field-full textarea:focus,
.kb-form-field-half textarea:focus,
.kb-form-field-full select:focus,
.kb-form-field-half select:focus {
    outline: none;
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.kb-form-field-full textarea,
.kb-form-field-half textarea {
    resize: vertical;
    min-height: 100px;
}

.kb-content-editor {
    position: relative;
}

.kb-content-editor textarea {
    min-height: 200px;
    font-family: 'Courier New', monospace;
    line-height: 1.6;
}

.kb-form-field-full input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    transform: scale(1.2);
}

.kb-form-actions {
    display: flex;
    gap: var(--kb-spacing);
    justify-content: center;
    flex-wrap: wrap;
    padding: var(--kb-spacing-lg);
    background: #f8f9fa;
    border-radius: var(--kb-radius);
    border-top: 2px solid var(--kb-border);
}

.kb-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--kb-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    min-height: 48px;
    justify-content: center;
}

.kb-button-primary {
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-primary-dark) 100%);
    color: white;
}

.kb-button-primary:hover {
    background: linear-gradient(135deg, var(--kb-primary-dark) 0%, #4c51bf 100%);
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow);
    color: white;
}

.kb-button-secondary {
    background: linear-gradient(135deg, var(--kb-secondary) 0%, #2d3748 100%);
    color: white;
}

.kb-button-secondary:hover {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow);
    color: white;
}

.kb-button-outline {
    background: transparent;
    color: var(--kb-primary);
    border: 2px solid var(--kb-primary);
}

.kb-button-outline:hover {
    background: var(--kb-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow);
}

.kb-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.kb-button-icon {
    font-size: 1.1rem;
}

.kb-button-text {
    font-weight: 600;
}

/* Responsive per mobile */
@media (max-width: 768px) {
    .kb-create-form {
        padding: var(--kb-spacing);
    }
    
    .kb-form-section {
        padding: var(--kb-spacing);
        margin-bottom: var(--kb-spacing);
    }
    
    .kb-form-row {
        flex-direction: column;
        gap: var(--kb-spacing);
    }
    
    .kb-form-field-half {
        min-width: 100%;
    }
    
    .kb-form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .kb-button {
        width: 100%;
        justify-content: center;
    }
    
    .kb-create-header h2 {
        font-size: 1.5rem;
    }
    
    .kb-create-header p {
        font-size: 1rem;
    }
}

/* Print styles */
@media print {
    .kb-nav,
    .kb-search-section,
    .kb-actions,
    .kb-article-sidebar,
    .kb-share-modal,
    .kb-form-actions {
        display: none;
    }
    
    .kb-article-main {
        grid-template-columns: 1fr;
    }
    
    .kb-frontend {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}