/* Knowledge Base Widget CSS */
/* Add this to your main CSS file or create assets/css/knowledge-base-widget.css */

:root {
    --kb-primary-color: #007bff;
    --kb-primary-hover: #0056b3;
    --kb-bg-color: #ffffff;
    --kb-border-color: #e9ecef;
    --kb-text-color: #333333;
    --kb-text-muted: #6c757d;
    --kb-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    --kb-widget-size: 60px;
    --kb-widget-panel-width: 380px;
    --kb-widget-panel-height: 500px;
    --kb-border-radius: 12px;
    --kb-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Widget Container */
.kb-widget {
    position: fixed;
    bottom: 20px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

.kb-widget-left {
    left: 20px;
}

.kb-widget-right {
    right: 20px;
}

/* Widget Toggle Button */
.kb-widget-toggle {
    position: relative;
    width: var(--kb-widget-size);
    height: var(--kb-widget-size);
    background: linear-gradient(135deg, var(--kb-primary-color), var(--kb-primary-hover));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--kb-shadow);
    transition: var(--kb-transition);
    color: white;
    font-size: 24px;
    user-select: none;
    animation: kb-pulse 3s infinite;
}

.kb-widget-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.kb-widget-toggle.active {
    background: var(--kb-primary-hover);
    transform: rotate(180deg) scale(0.9);
}

/* Pulse Animation */
@keyframes kb-pulse {
    0%, 70%, 100% {
        box-shadow: var(--kb-shadow);
    }
    35% {
        box-shadow: var(--kb-shadow), 0 0 0 20px rgba(0, 123, 255, 0.1);
    }
}

/* Widget Tooltip */
.kb-widget-tooltip {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--kb-transition);
    font-weight: 500;
}

.kb-widget-left .kb-widget-tooltip {
    left: calc(100% + 15px);
}

.kb-widget-right .kb-widget-tooltip {
    right: calc(100% + 15px);
}

.kb-widget-toggle:hover .kb-widget-tooltip {
    opacity: 1;
}

/* Widget Panel */
.kb-widget-panel {
    position: absolute;
    bottom: calc(var(--kb-widget-size) + 15px);
    width: var(--kb-widget-panel-width);
    height: var(--kb-widget-panel-height);
    background: var(--kb-bg-color);
    border-radius: var(--kb-border-radius);
    box-shadow: var(--kb-shadow);
    border: 1px solid var(--kb-border-color);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: var(--kb-transition);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.kb-widget-left .kb-widget-panel {
    left: 0;
}

.kb-widget-right .kb-widget-panel {
    right: 0;
}

.kb-widget-panel.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* Widget Header */
.kb-widget-header {
    padding: 20px 20px 15px;
    background: linear-gradient(135deg, var(--kb-primary-color), var(--kb-primary-hover));
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: var(--kb-border-radius) var(--kb-border-radius) 0 0;
}

.kb-widget-title {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.kb-widget-close {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--kb-transition);
    opacity: 0.8;
}

.kb-widget-close:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

/* Widget Content */
.kb-widget-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Search Section */
.kb-search-section {
    margin-bottom: 20px;
}

.kb-search-box {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
}

.kb-search-box input {
    flex: 1;
    border: 1px solid var(--kb-border-color);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 14px;
    transition: var(--kb-transition);
}

.kb-search-box input:focus {
    outline: none;
    border-color: var(--kb-primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.kb-search-box button {
    background: var(--kb-primary-color);
    border: none;
    color: white;
    border-radius: 8px;
    padding: 10px 15px;
    cursor: pointer;
    transition: var(--kb-transition);
}

.kb-search-box button:hover {
    background: var(--kb-primary-hover);
}

/* Search Results */
.kb-search-results {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--kb-border-color);
    border-radius: 8px;
    background: white;
    display: none;
}

.kb-search-results.show {
    display: block;
}

.kb-search-result-item {
    padding: 12px 15px;
    border-bottom: 1px solid var(--kb-border-color);
    cursor: pointer;
    transition: var(--kb-transition);
}

.kb-search-result-item:last-child {
    border-bottom: none;
}

.kb-search-result-item:hover {
    background: #f8f9fa;
}

.kb-search-result-title {
    font-weight: 600;
    color: var(--kb-text-color);
    margin-bottom: 4px;
}

.kb-search-result-excerpt {
    font-size: 12px;
    color: var(--kb-text-muted);
    line-height: 1.4;
}

.kb-search-no-results {
    padding: 20px;
    text-align: center;
    color: var(--kb-text-muted);
}

/* Quick Tabs */
.kb-quick-tabs {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.kb-quick-tabs .nav-pills {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 4px;
}

.kb-quick-tabs .nav-link {
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--kb-text-muted);
    border: none;
    transition: var(--kb-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.kb-quick-tabs .nav-link.active {
    background: var(--kb-primary-color);
    color: white;
}

.kb-quick-tabs .tab-content {
    flex: 1;
    overflow-y: auto;
}

.kb-quick-tabs .tab-pane {
    height: 100%;
}

/* Article List */
.kb-article-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.kb-article-item {
    border: 1px solid var(--kb-border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--kb-transition);
}

.kb-article-item:hover {
    border-color: var(--kb-primary-color);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.1);
}

.kb-article-link {
    display: block;
    padding: 12px;
    text-decoration: none;
    color: inherit;
}

.kb-article-title {
    font-weight: 600;
    color: var(--kb-text-color);
    margin-bottom: 6px;
    font-size: 13px;
    line-height: 1.4;
}

.kb-article-excerpt {
    font-size: 12px;
    color: var(--kb-text-muted);
    line-height: 1.4;
}

/* Category List */
.kb-category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.kb-category-item {
    border: 1px solid var(--kb-border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--kb-transition);
}

.kb-category-item:hover {
    border-color: var(--kb-primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.1);
}

.kb-category-link {
    display: flex;
    align-items: center;
    padding: 12px;
    text-decoration: none;
    color: inherit;
    gap: 12px;
}

.kb-category-icon {
    font-size: 20px;
    width: 24px;
    text-align: center;
}

.kb-category-info {
    flex: 1;
}

.kb-category-name {
    font-weight: 600;
    color: var(--kb-text-color);
    margin-bottom: 2px;
    font-size: 13px;
}

.kb-category-desc {
    font-size: 11px;
    color: var(--kb-text-muted);
    line-height: 1.3;
}

/* No Content */
.kb-no-content {
    text-align: center;
    padding: 40px 20px;
    color: var(--kb-text-muted);
}

.kb-no-content i {
    font-size: 32px;
    margin-bottom: 10px;
    opacity: 0.5;
}

.kb-no-content p {
    margin: 0;
    font-size: 13px;
}

/* Widget Footer */
.kb-widget-footer {
    padding: 15px 20px 20px;
    border-top: 1px solid var(--kb-border-color);
    background: #f8f9fa;
}

.kb-widget-footer .btn {
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    padding: 8px 12px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .kb-widget {
        bottom: 15px;
    }
    
    .kb-widget-left {
        left: 15px;
    }
    
    .kb-widget-right {
        right: 15px;
    }
    
    .kb-widget-panel {
        width: calc(100vw - 40px);
        max-width: 320px;
        height: 400px;
        bottom: calc(var(--kb-widget-size) + 10px);
    }
    
    .kb-widget-content {
        padding: 15px;
    }
    
    .kb-widget-header {
        padding: 15px;
    }
    
    .kb-widget-title {
        font-size: 14px;
    }
    
    .kb-search-box {
        flex-direction: column;
        gap: 8px;
    }
    
    .kb-search-box button {
        width: 100%;
    }
}

.kb-widget-left {
        left: 10px !important;
        right: auto !important;
        transform: none !important;
    }
    
    .kb-widget-right {
        right: 10px !important;
        left: auto !important;
        transform: none !important;
    }
    
    .kb-widget-tooltip {
        display: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --kb-bg-color: #2d3748;
        --kb-border-color: #4a5568;
        --kb-text-color: #e2e8f0;
        --kb-text-muted: #a0aec0;
    }
    
    .kb-quick-tabs .nav-pills {
        background: #1a202c;
    }
    
    .kb-widget-footer {
        background: #1a202c;
    }
    
    .kb-search-results {
        background: #2d3748;
    }
    
    .kb-search-result-item:hover {
        background: #4a5568;
    }
}

/* Animation for loading states */
.kb-loading {
    opacity: 0.6;
    pointer-events: none;
}

.kb-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid var(--kb-border-color);
    border-top-color: var(--kb-primary-color);
    border-radius: 50%;
    animation: kb-spin 1s linear infinite;
}

@keyframes kb-spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Scrollbar Styling */
.kb-widget-content::-webkit-scrollbar,
.kb-search-results::-webkit-scrollbar,
.tab-content::-webkit-scrollbar {
    width: 4px;
}

.kb-widget-content::-webkit-scrollbar-track,
.kb-search-results::-webkit-scrollbar-track,
.tab-content::-webkit-scrollbar-track {
    background: transparent;
}

.kb-widget-content::-webkit-scrollbar-thumb,
.kb-search-results::-webkit-scrollbar-thumb,
.tab-content::-webkit-scrollbar-thumb {
    background: var(--kb-border-color);
    border-radius: 4px;
}

.kb-widget-content::-webkit-scrollbar-thumb:hover,
.kb-search-results::-webkit-scrollbar-thumb:hover,
.tab-content::-webkit-scrollbar-thumb:hover {
    background: var(--kb-text-muted);
}