/* Knowledge Base Styles */
.knowledge-base-page {
    min-height: 100vh;
    background: var(--bg-color);
    padding: 2rem 0;
}

.knowledge-base-page .page-header {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    margin-bottom: 2rem;
    border-radius: 0 0 1rem 1rem;
    box-shadow: var(--shadow-lg);
}

.knowledge-base-page .header-content {
    padding: 2rem;
    text-align: center;
}

.knowledge-base-page .page-title h1 {
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.knowledge-base-page .page-title i {
    margin-right: 1rem;
    font-size: 2.2rem;
}

.knowledge-base-page .content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Knowledge Base Search */
.knowledge-base-search {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    overflow: hidden;
}

.search-container {
    padding: 3rem 2rem;
    text-align: center;
}

.search-header h2 {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.search-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.search-header i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.search-form {
    max-width: 600px;
    margin: 0 auto;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    background: var(--bg-light);
    border-radius: 3rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.search-input-wrapper:focus-within {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.search-input {
    flex: 1;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    background: transparent;
    color: var(--text-primary);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-button:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

/* Knowledge Base Categories */
.knowledge-base-categories {
    margin-bottom: 2rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.category-icon {
    width: 3rem;
    height: 3rem;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

.category-icon i {
    color: white;
    font-size: 1.2rem;
}

.category-info {
    flex: 1;
}

.category-title {
    margin: 0 0 0.25rem 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.category-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.category-title a:hover {
    color: var(--accent-color);
}

.category-count {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.category-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.category-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.category-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.category-link:hover {
    color: var(--accent-hover);
    transform: translateX(5px);
}

.category-link i {
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.category-link:hover i {
    transform: translateX(3px);
}

/* Knowledge Base Articles */
.knowledge-base-articles {
    margin-bottom: 2rem;
}

.category-section {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.category-name {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.category-name i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.category-count {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.article-card {
    background: var(--bg-light);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.article-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.article-header {
    margin-bottom: 1rem;
}

.article-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.article-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-title a:hover {
    color: var(--accent-color);
}

.article-date {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
}

.article-date i {
    margin-right: 0.25rem;
}

.article-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.article-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.article-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.article-link:hover {
    color: var(--accent-hover);
    transform: translateX(3px);
}

.article-link i {
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.article-link:hover i {
    transform: translateX(3px);
}

/* Search Results */
.knowledge-base-search-results {
    margin-bottom: 2rem;
}

.search-results-header {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.search-results-header h2 {
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.search-results-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: 0;
}

.search-results-header i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.knowledge-base-no-results {
    background: white;
    border-radius: 1rem;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.no-results-icon {
    width: 5rem;
    height: 5rem;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.no-results-icon i {
    color: var(--text-muted);
    font-size: 2rem;
}

.no-results-content h4 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.no-results-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: 0;
}

/* Knowledge Base Empty State */
.knowledge-base-empty {
    background: white;
    border-radius: 1rem;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.empty-icon {
    width: 5rem;
    height: 5rem;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.empty-icon i {
    color: var(--text-muted);
    font-size: 2rem;
}

.empty-content h4 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.empty-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: 0;
}

/* Knowledge Base Article Page */
.knowledge-base-article-page {
    min-height: 100vh;
    background: var(--bg-color);
    padding: 2rem 0;
}

.knowledge-base-article-page .page-header {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    margin-bottom: 2rem;
    border-radius: 0 0 1rem 1rem;
    box-shadow: var(--shadow-lg);
}

.knowledge-base-article-page .header-content {
    padding: 2rem;
    text-align: center;
}

.knowledge-base-article-page .page-title h1 {
    color: white;
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.knowledge-base-article-page .page-title i {
    margin-right: 1rem;
    font-size: 1.8rem;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.article-main {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.article-card {
    padding: 2rem;
}

.article-body {
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.article-body h1, .article-body h2, .article-body h3, .article-body h4, .article-body h5, .article-body h6 {
    color: var(--text-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-body p {
    margin-bottom: 1rem;
}

.article-body ul, .article-body ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body a {
    color: var(--accent-color);
    text-decoration: none;
}

.article-body a:hover {
    text-decoration: underline;
}

.article-feedback {
    border-top: 2px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
}

.article-feedback h4 {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.article-feedback i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.feedback-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
}

.feedback-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.answer_response {
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 1rem;
}

/* Article Sidebar */
.article-sidebar {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    height: fit-content;
}

.related-articles-card {
    padding: 1.5rem;
}

.card-header {
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.card-header h4 {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.card-header i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.related-articles-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.related-article-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.related-article-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.related-article-title {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
}

.related-article-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-article-title a:hover {
    color: var(--accent-color);
}

.related-article-excerpt {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .knowledge-base-page .page-title h1,
    .knowledge-base-article-page .page-title h1 {
        font-size: 2rem;
    }
    
    .knowledge-base-page .page-title i,
    .knowledge-base-article-page .page-title i {
        font-size: 1.8rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .search-container {
        padding: 2rem 1rem;
    }
    
    .search-header h2 {
        font-size: 1.5rem;
    }
    
    .feedback-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feedback-btn {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .knowledge-base-page .page-title h1,
    .knowledge-base-article-page .page-title h1 {
        font-size: 1.5rem;
    }
    
    .knowledge-base-page .page-title i,
    .knowledge-base-article-page .page-title i {
        font-size: 1.3rem;
    }
    
    .search-input {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }
    
    .search-button {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .category-card,
    .article-card {
        padding: 1rem;
    }
    
    .article-card {
        padding: 1.5rem;
    }
}

/* Dark Mode Support */
body.dark .knowledge-base-page,
body.dark .knowledge-base-article-page {
    background: var(--dark-bg);
}

body.dark .knowledge-base-search,
body.dark .category-card,
body.dark .category-section,
body.dark .article-main,
body.dark .article-sidebar,
body.dark .search-results-header,
body.dark .knowledge-base-no-results,
body.dark .knowledge-base-empty {
    background: var(--dark-card);
    border-color: var(--dark-border);
}

body.dark .search-input-wrapper {
    background: var(--dark-input);
}

body.dark .search-input {
    color: var(--dark-text);
}

body.dark .search-input::placeholder {
    color: var(--dark-text-muted);
}

body.dark .article-card {
    background: var(--dark-bg-light);
}

body.dark .category-header,
body.dark .article-feedback {
    border-color: var(--dark-border);
}

body.dark .empty-icon,
body.dark .no-results-icon {
    background: var(--dark-bg-light);
}

body.dark .empty-icon i,
body.dark .no-results-icon i {
    color: var(--dark-text-muted);
}

/* Animations */
.knowledge-base-page,
.knowledge-base-article-page {
    animation: fadeInUp 0.6s ease-out;
}

.category-card,
.article-card {
    animation: fadeInUp 0.6s ease-out;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }
.category-card:nth-child(5) { animation-delay: 0.5s; }
.category-card:nth-child(6) { animation-delay: 0.6s; }

.article-card:nth-child(1) { animation-delay: 0.1s; }
.article-card:nth-child(2) { animation-delay: 0.2s; }
.article-card:nth-child(3) { animation-delay: 0.3s; }
.article-card:nth-child(4) { animation-delay: 0.4s; }
.article-card:nth-child(5) { animation-delay: 0.5s; }
.article-card:nth-child(6) { animation-delay: 0.6s; }

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