/* ============================================
   知识库模块样式 - knowledge.css
   ============================================ */

/* === 知识库卡片网格 === */
.kn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    padding: 4px 0;
}

.kn-card {
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}
.kn-card:hover {
    border-color: var(--primary, #2F6BFF);
    box-shadow: 0 4px 12px rgba(47, 107, 255, 0.08);
    transform: translateY(-2px);
}

.kn-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 12px;
}
.kn-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.kn-card-icon.personal { background: #ede9fe; color: #7c3aed; }
.kn-card-icon.team { background: #dbeafe; color: #2563eb; }

.kn-card-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: #f3f4f6;
    color: #6b7280;
}
.kn-card-badge.personal { background: #ede9fe; color: #7c3aed; }
.kn-card-badge.team { background: #dbeafe; color: #2563eb; }

.kn-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary, #1f2937);
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.kn-card-desc {
    font-size: 13px;
    color: var(--text-secondary, #6b7280);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 39px;
}

.kn-card-stats {
    display: flex;
    gap: 16px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color, #f0f0f0);
    font-size: 12px;
    color: var(--text-secondary, #9ca3af);
}
.kn-card-stats span { display: flex; align-items: center; gap: 4px; }

.kn-card-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    opacity: 0;
    transition: opacity 0.2s;
}
.kn-card:hover .kn-card-actions { opacity: 1; }
.kn-card-actions button {
    background: none;
    border: none;
    padding: 4px 6px;
    cursor: pointer;
    border-radius: 4px;
    color: #9ca3af;
}
.kn-card-actions button:hover { background: #f3f4f6; color: #ef4444; }

/* === 工具栏 === */
.kn-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.kn-toolbar-left { display: flex; align-items: center; gap: 10px; flex: 1; }
.kn-toolbar-right { display: flex; align-items: center; gap: 8px; }

.kn-search-box {
    display: flex;
    align-items: center;
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    padding: 0 12px;
    height: 36px;
    width: 240px;
}
.kn-search-box input {
    border: none;
    outline: none;
    background: none;
    flex: 1;
    font-size: 13px;
    color: var(--text-primary);
}
.kn-search-box svg { color: #9ca3af; flex-shrink: 0; }

/* === 面包屑 === */
.kn-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary, #6b7280);
    margin-bottom: 16px;
}
.kn-breadcrumb a {
    color: var(--primary, #2F6BFF);
    cursor: pointer;
    text-decoration: none;
}
.kn-breadcrumb a:hover { text-decoration: underline; }
.kn-breadcrumb .sep { color: #d1d5db; }

/* === 文档表格 === */
.kn-doc-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 13px;
}
.kn-doc-table th {
    text-align: left;
    padding: 10px 12px;
    font-weight: 500;
    color: var(--text-secondary, #6b7280);
    border-bottom: 1px solid var(--border-color, #e5e7eb);
    background: var(--bg-subtle, #f9fafb);
}
.kn-doc-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color, #f0f0f0);
    vertical-align: middle;
}
.kn-doc-table tr:hover td { background: #f9fafb; }

.kn-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 500;
}
.kn-status.success { background: #dcfce7; color: #16a34a; }
.kn-status.warning { background: #fef3c7; color: #d97706; }
.kn-status.info { background: #dbeafe; color: #2563eb; }
.kn-status.danger { background: #fee2e2; color: #dc2626; }
.kn-status.muted { background: #f3f4f6; color: #9ca3af; }

/* === 分段卡片 === */
.kn-seg-list { display: flex; flex-direction: column; gap: 8px; }

.kn-seg-card {
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    padding: 14px 16px;
    transition: border-color 0.2s;
}
.kn-seg-card:hover { border-color: var(--primary, #2F6BFF); }
.kn-seg-card.disabled { opacity: 0.5; }

.kn-seg-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}
.kn-seg-pos {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary, #2F6BFF);
    background: #eff6ff;
    padding: 2px 8px;
    border-radius: 4px;
}
.kn-seg-content {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-primary, #374151);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 150px;
    overflow: hidden;
}
.kn-seg-meta {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    font-size: 11px;
    color: var(--text-secondary, #9ca3af);
}

/* === 检索结果 === */
.kn-search-panel {
    max-width: 800px;
}
.kn-search-input-row {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
.kn-search-input-row input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}
.kn-search-input-row input:focus { border-color: var(--primary, #2F6BFF); }

.kn-search-params {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 12px;
    align-items: center;
}
.kn-search-params label { color: var(--text-secondary, #6b7280); }
.kn-search-params select, .kn-search-params input[type="number"] {
    padding: 4px 8px;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    font-size: 12px;
    width: 70px;
}

.kn-result-card {
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    padding: 14px 16px;
    margin-bottom: 10px;
}
.kn-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.kn-result-source {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
}
.kn-result-score {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    background: #dcfce7;
    color: #16a34a;
}
.kn-result-content {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-primary, #374151);
    max-height: 120px;
    overflow: hidden;
}
.kn-result-latency {
    text-align: center;
    font-size: 12px;
    color: #9ca3af;
    margin-top: 12px;
}

/* === 弹窗 === */
.kn-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.kn-modal {
    background: var(--bg-card, #fff);
    border-radius: 12px;
    padding: 24px;
    width: 90%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}
.kn-modal h3 { margin: 0 0 16px; font-size: 16px; }
.kn-modal .form-group { margin-bottom: 14px; }
.kn-modal .form-group label { display: block; font-size: 13px; color: #4b5563; margin-bottom: 4px; }
.kn-modal .form-group input,
.kn-modal .form-group textarea,
.kn-modal .form-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-size: 13px;
    outline: none;
    box-sizing: border-box;
}
.kn-modal .form-group textarea { min-height: 80px; resize: vertical; }
.kn-modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

/* === 上传拖拽区 === */
.kn-upload-zone {
    border: 2px dashed var(--border-color, #e5e7eb);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 16px;
}
.kn-upload-zone:hover { border-color: var(--primary, #2F6BFF); background: #f8faff; }
.kn-upload-zone svg { color: #9ca3af; margin-bottom: 8px; }
.kn-upload-zone p { font-size: 13px; color: var(--text-secondary, #6b7280); margin: 4px 0; }
.kn-upload-zone .hint { font-size: 11px; color: #d1d5db; }

/* === 空状态 === */
.kn-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary, #9ca3af);
}
.kn-empty svg { margin-bottom: 12px; color: #d1d5db; }
.kn-empty h4 { font-size: 15px; color: #6b7280; margin-bottom: 6px; }
.kn-empty p { font-size: 13px; }

/* === 分页 === */
.kn-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 13px;
}
.kn-pagination button {
    padding: 6px 12px;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    background: var(--bg-card, #fff);
    cursor: pointer;
    font-size: 13px;
}
.kn-pagination button:hover { border-color: var(--primary); color: var(--primary); }
.kn-pagination button:disabled { opacity: 0.4; cursor: not-allowed; }
.kn-pagination .current { color: var(--text-secondary); }

/* === 响应式 === */
@media (max-width: 768px) {
    .kn-grid { grid-template-columns: 1fr; }
    .kn-toolbar { flex-direction: column; align-items: stretch; }
    .kn-search-box { width: 100%; }
    .kn-chat-container { height: calc(100vh - 200px); }
}

/* === AI 问答聊天界面 === */
.kn-chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 180px);
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    overflow: hidden;
    background: #fafbfc;
}

.kn-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    scroll-behavior: smooth;
}

.kn-chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: #6b7280;
}
.kn-chat-welcome svg { color: #9ca3af; margin-bottom: 12px; }
.kn-chat-welcome h4 { font-size: 18px; color: #374151; margin: 0 0 8px; }
.kn-chat-welcome p { font-size: 14px; margin: 0 0 20px; }

.kn-chat-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}
.kn-chat-suggestions button {
    padding: 8px 16px;
    border: 1px solid #d1d5db;
    border-radius: 20px;
    background: #fff;
    font-size: 13px;
    color: #374151;
    cursor: pointer;
    transition: all 0.2s;
}
.kn-chat-suggestions button:hover {
    border-color: #6366f1;
    color: #6366f1;
    background: #eef2ff;
}

.kn-chat-msg {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    max-width: 85%;
}
.kn-chat-msg.user {
    margin-left: auto;
    flex-direction: row-reverse;
}
.kn-chat-msg.assistant { margin-right: auto; }

.kn-chat-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    background: #f3f4f6;
}
.kn-chat-msg.user .kn-chat-avatar { background: #eef2ff; }
.kn-chat-msg.assistant .kn-chat-avatar { background: #ecfdf5; }

.kn-chat-bubble {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.7;
}
.kn-chat-msg.user .kn-chat-bubble {
    background: #6366f1;
    color: #fff;
    border-bottom-right-radius: 4px;
}
.kn-chat-msg.assistant .kn-chat-bubble {
    background: #fff;
    color: #374151;
    border: 1px solid #e5e7eb;
    border-bottom-left-radius: 4px;
}

.kn-chat-text { word-break: break-word; }
.kn-chat-text code {
    background: rgba(0,0,0,0.06);
    padding: 2px 5px;
    border-radius: 3px;
    font-size: 12px;
}

.kn-chat-sources {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid #f3f4f6;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}
.kn-chat-sources-label {
    font-size: 11px;
    color: #9ca3af;
}
.kn-chat-source-tag {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
    cursor: default;
}

.kn-chat-meta {
    margin-top: 6px;
    font-size: 11px;
    color: #9ca3af;
    display: flex;
    gap: 12px;
}

.kn-chat-typing {
    color: #6b7280;
    animation: kn-pulse 1.5s infinite;
}
@keyframes kn-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.kn-chat-input-area {
    padding: 16px 20px;
    border-top: 1px solid #e5e7eb;
    background: #fff;
}
.kn-chat-input-row {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}
.kn-chat-input-row textarea {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    resize: none;
    font-size: 14px;
    line-height: 1.5;
    max-height: 120px;
    outline: none;
    transition: border-color 0.2s;
}
.kn-chat-input-row textarea:focus { border-color: #6366f1; }
.kn-chat-input-row button {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    flex-shrink: 0;
}
.kn-chat-hint {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
    font-size: 12px;
    color: #9ca3af;
}