/* Knowledge Base - Complete CSS */
/* Comprehensive styles for knowledgebase.html */

/* Knowledge Base Hero */
.kb-hero {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: 8rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.kb-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0.05;
    z-index: 0;
}

.kb-hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.kb-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(128, 66, 149, 0.1);
    border: 1px solid rgba(128, 66, 149, 0.2);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    margin-bottom: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
}

.kb-title {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: var(--text-primary);
}

.kb-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

/* Enhanced Search */
.kb-search {
    max-width: 600px;
    margin: 0 auto 3rem;
    position: relative;
}

.kb-search .search-form {
    display: grid;
}

.search-input-group {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.search-input-group:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(128, 66, 149, 0.1);
}

.search-icon {
    color: var(--text-muted);
    margin: 0 1rem;
    font-size: 1.125rem;
}

.search-input-group input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    padding: 0.75rem 0;
    font-size: 1rem;
    color: var(--text-primary);
}

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

.search-btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

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

.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    max-height: 300px;
    overflow-y: auto;
}

.search-suggestions.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.suggestion-item {
    padding: 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.suggestion-item:hover {
    background: var(--bg-secondary);
}

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

.suggestion-icon {
    color: var(--primary-color);
    font-size: 0.875rem;
    width: 1rem;
}

.suggestion-content h4 {
    margin: 0 0 0.25rem 0;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.suggestion-content p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* KB Stats */
.kb-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Popular Topics */
.popular-topics {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.topic-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.topic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.topic-card:hover::before {
    transform: scaleX(1);
}

.topic-icon {
    width: 4rem;
    height: 4rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.topic-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.25rem;
}

.topic-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.topic-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.topic-stats span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topic-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.topic-link:hover {
    gap: 0.75rem;
}

/* Knowledge Base Content */
.kb-content {
    padding: 4rem 0;
}

.kb-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 3rem;
    align-items: start;
}

.kb-main {
    min-width: 0;
}

/* Featured Articles */
.featured-section {
    margin-bottom: 4rem;
}

.featured-section h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.75rem;
}

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

.featured-article {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.featured-article:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.article-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.article-badge.trending {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
    border: 1px solid rgba(243, 156, 18, 0.2);
}

.article-badge.new {
    background: rgba(39, 174, 96, 0.1);
    color: #27ae60;
    border: 1px solid rgba(39, 174, 96, 0.2);
}

.article-badge.updated {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
    border: 1px solid rgba(52, 152, 219, 0.2);
}

.featured-article h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.featured-article h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.featured-article h3 a:hover {
    color: var(--primary-color);
}

.featured-article p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category i {
    color: var(--primary-color);
}

.rating {
    color: var(--warning-color);
}

/* Categories Section */
.categories-section {
    margin-bottom: 4rem;
}

.categories-section h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.75rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.category-icon {
    width: 3rem;
    height: 3rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.category-info h3 {
    margin: 0 0 0.25rem 0;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.article-count {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.category-articles {
    padding: 1.5rem;
}

.article-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.article-link:hover {
    color: var(--primary-color);
    padding-left: 0.5rem;
}

.article-link:last-of-type {
    border-bottom: none;
}

.view-all-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0 0.5rem 0;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    margin-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    transition: var(--transition);
}

.view-all-link:hover {
    padding-left: 0.5rem;
}

/* FAQ Section */
.faq-section {
    margin-bottom: 4rem;
}

.faq-section h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.75rem;
}

.faq-container {
    max-width: 800px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
    background: var(--bg-primary);
}

.faq-item:hover {
    box-shadow: var(--shadow);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
    font-size: 0.875rem;
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    background: var(--bg-secondary);
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    padding: 1.5rem;
    max-height: 200px;
}

.faq-answer p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-answer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* Video Section */
.video-section {
    margin-bottom: 4rem;
}

.video-section h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.75rem;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.video-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.video-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.video-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
    cursor: pointer;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4rem;
    height: 4rem;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    transition: var(--transition);
}

.video-card:hover .play-button {
    background: rgba(128, 66, 149, 0.9);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
}

.video-content {
    padding: 1.5rem;
}

.video-content h3 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.video-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.875rem;
}

.video-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

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

/* Sidebar */
.kb-sidebar {
    position: sticky;
    top: 6rem;
    height: fit-content;
}

.sidebar-widget {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.sidebar-widget h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.25rem;
}

/* Quick Links */
.links-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
}

.quick-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    border-color: var(--primary-color);
}

.link-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.link-info h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    color: var(--text-primary);
}

.link-info p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.quick-link:hover .link-info h4,
.quick-link:hover .link-info p {
    color: white;
}

/* Recent Updates */
.updates-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.update-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.update-item:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.update-date {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    min-width: 3rem;
    height: fit-content;
}

.update-content h4 {
    margin: 0 0 0.25rem 0;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.update-content p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Support Widget */
.support-widget {
    text-align: center;
    background: var(--bg-secondary);
}

.support-content i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.support-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.support-option {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.support-option:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Feedback Widget */
.feedback-widget {
    text-align: center;
}

.rating-stars {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 1rem 0;
}

.rating-stars i {
    font-size: 1.5rem;
    color: var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.rating-stars i:hover,
.rating-stars i.active {
    color: var(--warning-color);
    transform: scale(1.1);
}

.feedback-form {
    margin-top: 1rem;
}

.feedback-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    resize: vertical;
    font-family: var(--font-family);
    margin-bottom: 1rem;
}

.feedback-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(128, 66, 149, 0.1);
}

/* Help Section */
.help-section {
    background: var(--primary-gradient);
    color: white;
    padding: 4rem 0;
}

.help-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    flex-wrap: wrap;
}

.help-text h2 {
    color: white;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.help-text p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.help-features {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.help-features .feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
}

.help-features .feature i {
    color: rgba(255, 255, 255, 0.8);
}

.help-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.help-actions .btn {
    min-width: 150px;
}

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

.help-actions .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
}

.help-actions .btn-outline {
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

.help-actions .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* Search Results Highlighting */
.search-highlight {
    background: rgba(243, 156, 18, 0.3);
    padding: 0.125rem 0.25rem;
    border-radius: 2px;
}

/* Loading States */
.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-muted);
}

.loading-spinner {
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .kb-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .kb-sidebar {
        position: static;
        order: -1;
    }
}

@media (max-width: 768px) {
    .kb-hero {
        padding: 6rem 0 3rem;
    }
    
    .kb-title {
        font-size: 2rem;
    }
    
    .kb-description {
        font-size: 1.125rem;
    }
    
    .kb-stats {
        gap: 2rem;
    }
    
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .help-content {
        flex-direction: column;
        text-align: center;
    }
    
    .help-features {
        justify-content: center;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .search-input-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .search-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .sidebar-widget {
        padding: 1.5rem;
    }
    
    .featured-article {
        padding: 1.5rem;
    }
    
    .topic-card {
        padding: 1.5rem;
    }
    
    .kb-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .help-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .help-actions .btn {
        width: 100%;
    }
}