/* AI 智能办公平台 — 全局样式 */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── 布局 ── */
.app-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.app-header h1 { font-size: 16px; font-weight: 600; }
.app-header .status {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  display: inline-block;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 32px;
  overflow-x: hidden;
}

/* ── 导航标签 ── */
.nav-tabs { display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:8px;margin-bottom:20px;flex-shrink:0 }
.nav-tab2 { padding:6px 12px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:all 0.2s;color:var(--text-secondary);user-select:none;white-space:nowrap }
.nav-tab2:hover { background:rgba(255,255,255,0.8);color:var(--text) }
.nav-tab2.active { background:white;color:var(--primary);box-shadow:0 1px 2px rgba(0,0,0,0.08) }

/* ── 卡片 ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 20px;
  margin-bottom: 16px;
}

/* ── 模板网格 ── */
.template-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}
.template-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s;
}
.template-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(37,99,235,0.15);
  transform: translateY(-1px);
}
.template-card .name { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.template-card .desc { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.template-card .meta { font-size: 12px; color: var(--text-secondary); display: flex; gap: 12px; }
.template-card .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
}
.badge-claude { background: #dbeafe; color: #1d4ed8; }
.badge-user { background: #f0fdf4; color: #15803d; }

/* ── 表单 ── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-group textarea { min-height: 80px; resize: vertical; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: #e2e8f0; }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #16a34a; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }

/* ── 进度 ── */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin: 16px 0;
}
.progress-bar .fill {
  height: 100%;
  background: var(--primary);
  border-radius: 4px;
  transition: width 0.3s ease;
  width: 0%;
}
.progress-section {
  margin-bottom: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--bg);
  font-size: 14px;
}
.progress-section .status-icon { margin-right: 8px; }
.progress-section.done { border-left: 3px solid var(--success); }
.progress-section.active { border-left: 3px solid var(--primary); background: #eff6ff; }
.progress-section.pending { border-left: 3px solid var(--border); color: var(--text-secondary); }
.progress-section.error { border-left: 3px solid var(--danger); }

/* ── 结果 ── */
.result-card { text-align: center; padding: 40px 20px; }
.result-card .icon { font-size: 48px; margin-bottom: 16px; }
.result-card .filename { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.result-card .fileinfo { color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; }

/* ── 历史 ── */
.history-list { margin-top: 32px; }
.history-list h3 { font-size: 16px; margin-bottom: 12px; }
.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.history-item:last-child { border-bottom: none; }
.history-item .doc-name { flex: 1; }
.history-item .doc-meta { color: var(--text-secondary); font-size: 12px; margin: 0 16px; }
.history-item .doc-link { color: var(--primary); text-decoration: none; font-size: 13px; }

/* ── 页面路由 ── */
.page { display: none; }
.page.active { display: block; }
.back-link {
  color: var(--primary);
  cursor: pointer;
  font-size: 14px;
  margin-bottom: 16px;
  display: inline-block;
  text-decoration: none;
}
.back-link:hover { text-decoration: underline; }

/* ── 二级下拉菜单 ── */
.nav-dropdown { position: relative; display: inline-flex; }
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  min-width: 160px;
  padding: 4px;
  z-index: 200;
}
.nav-dropdown-menu span {
  display: block;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  color: var(--text);
  transition: all 0.15s;
  white-space: nowrap;
}
.nav-dropdown-menu span:hover { background: var(--bg); color: var(--primary); }
.nav-dropdown-menu span.active { background: #eff6ff; color: var(--primary); }

/* ── 模板管理页 ── */
.mgmt-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.mgmt-toolbar input[type="text"] {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  min-width: 200px;
}
.mgmt-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 13px;
}
.mgmt-table th {
  text-align: left;
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
}
.mgmt-table td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.mgmt-table th {
  padding: 10px 8px;}
.mgmt-table tr:hover td { background: #f8fafc; }
.mgmt-table .mgmt-name { font-weight: 600; color: var(--text); }
.mgmt-table .mgmt-desc { color: var(--text-secondary); font-size: 12px; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mgmt-table .mgmt-actions { display: flex; gap: 4px; white-space: nowrap; }
.mgmt-table .mgmt-btn-cell { white-space: nowrap; width: 110px; }
.mgmt-btn {
  padding: 3px 7px;
  border-radius: 4px;
  font-size: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
}
.mgmt-btn-edit { background: #dbeafe; color: #1d4ed8; }
.mgmt-btn-edit:hover { background: #bfdbfe; }
.mgmt-btn-del { background: #fee2e2; color: #dc2626; }
.mgmt-btn-del:hover { background: #fecaca; }
.mgmt-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

/* ── 空状态 ── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }

/* ── Excel 页 ── */
/* 步骤指示器 */
.step-flow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}
.step { display: flex; align-items: center; gap: 4px; }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
}
.step.active .step-num { background: var(--primary); color: #fff; }
.step.done .step-num { background: var(--success); color: #fff; }
.step-arrow { color: #cbd5e1; font-size: 16px; }
.step-label { font-weight: 500; }
.step.done .step-label { color: var(--success); }
.step.active .step-label { color: var(--primary); }

/* 上传区域 */
.upload-area { display: flex; gap: 8px; align-items: center; }
.upload-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  background: #f8fafc;
}
.upload-btn {
  padding: 10px 20px;
  background: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}
.upload-btn:hover { background: #e2e8f0; }
.upload-status { margin-top: 6px; font-size: 12px; color: var(--success); }
.form-hint { font-size: 12px; color: var(--text-secondary); font-weight: 400; margin-left: 4px; }

.excel-tab {
  flex: 1;
  text-align: center;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text-secondary);
  user-select: none;
}
.excel-tab:hover { background: var(--bg); }
.excel-tab.active { background: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(37,99,235,0.25); }
.excel-panel { animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity:0;transform:translateY(6px) } to { opacity:1;transform:translateY(0) } }

.excel-style-sample {
  flex: 1;
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}
.excel-style-sample:hover { border-color: var(--primary); }
.excel-style-sample.selected { border-color: var(--primary); background: #eff6ff; }

/* ── PPT 页 ── */
.ppt-tab {
  flex: 1;
  text-align: center;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text-secondary);
  user-select: none;
}
.ppt-tab:hover { background: var(--bg); }
.ppt-tab.active { background: #7c3aed; color: #fff; box-shadow: 0 2px 8px rgba(124,58,237,0.25); }
.ppt-panel { animation: fadeIn 0.2s ease; }

.ppt-theme-sample {
  flex: 1;
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}
.ppt-theme-sample:hover { border-color: #7c3aed; }
.ppt-theme-sample.selected { border-color: #7c3aed; background: #f5f3ff; }
.ppt-theme-preview {
  height: 50px;
  border-radius: 6px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
}

/* ── 知识智答页 ── */
.qa-tab { flex:1;text-align:center;padding:9px 14px;border-radius:7px;font-size:13px;font-weight:600;cursor:pointer;transition:all 0.15s;color:var(--text-secondary);user-select:none }
.qa-tab:hover { background:var(--bg) }
.qa-tab.active { background:#059669;color:#fff;box-shadow:0 2px 8px rgba(5,150,105,0.25) }
.qa-panel { animation:fadeIn 0.25s ease }
.qa-hint { padding:5px 12px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:16px;font-size:11px;cursor:pointer;color:#166534;transition:all 0.15s }
.qa-hint:hover { background:#dcfce7 }

/* 消息气泡 */
.qa-msg { max-width:92%;margin-bottom:4px }
.qa-msg.user { align-self:flex-end }
.qa-msg.bot { align-self:flex-start }
.qa-msg-c { padding:10px 14px;border-radius:10px;font-size:13px;line-height:1.7 }
.qa-msg.user .qa-msg-c { background:#059669;color:#fff;border-radius:10px 10px 2px 10px }
.qa-msg.bot .qa-msg-c { background:var(--bg);border:1px solid var(--border) }
.qa-msg-time { font-size:10px;color:var(--text-secondary);margin-top:3px }
.qa-msg.user .qa-msg-time { text-align:right }
.qa-msg-src { margin-top:6px;padding-top:6px;border-top:1px solid var(--border) }
.qa-msg-src-title { font-size:10px;color:var(--text-secondary);margin-bottom:3px;font-weight:500 }
.qa-src-chip { display:inline-flex;align-items:center;gap:3px;padding:3px 8px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:5px;font-size:10px;color:#166534;margin:2px 3px;cursor:pointer }

/* 知识管理表格 */
.qa-doc-table { width:100%;border-collapse:collapse;font-size:12px }
.qa-doc-table th { text-align:left;padding:8px 10px;border-bottom:2px solid var(--border);color:var(--text-secondary);font-size:11px;font-weight:600 }
.qa-doc-table td { padding:7px 8px;border-bottom:1px solid var(--border);white-space:nowrap }
.qa-doc-table td:first-child { white-space:normal }
.qa-doc-table tr:hover td { background:var(--bg) }

/* 统计 */
.qa-stats-grid { display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin-bottom:14px }
.qa-stat-card { background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px;text-align:center }
.qa-stat-num { font-size:26px;font-weight:700;color:#059669 }
.qa-stat-label { font-size:12px;color:var(--text-secondary);margin-top:2px }
.qa-tag-item { padding:4px 12px;border-radius:14px;font-size:12px;cursor:pointer;display:inline-block;margin:3px;transition:all 0.15s }
.qa-tag-item:hover { transform:scale(1.05) }

/* ── 响应式 ── */
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .template-grid { grid-template-columns: 1fr; }
  .app-header { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
  .nav-tabs { overflow-x: auto; }
}