:root {
  --bg: #f0f2f5;
  --card: #ffffff;
  --card2: #f7f8fa;
  --border: #e4e7ed;
  --border-light: #f0f1f3;
  --text: #1d2129;
  --text2: #6b7785;
  --text3: #a9b2bd;
  --accent: #3370ff;
  --accent2: #5a8bff;
  --accent-hover: #2860e1;
  --accent-light: #e8f0ff;
  --accent-bg: #f0f5ff;
  --success: #00b42a;
  --success-light: #e8ffea;
  --warning: #ff7d00;
  --warning-light: #fff7e8;
  --danger: #f53f3f;
  --danger-light: #ffece8;
  --info: #168cff;
  --info-light: #e8f7ff;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --sidebar-width: 240px;
  --topbar-height: 56px;
  --shadow: 0 1px 2px rgba(0,0,0,0.03), 0 1px 6px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --transition: all .2s cubic-bezier(.4,0,.2,1);
}

* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg); color: var(--text); min-height: 100vh;
  overflow-x: hidden; font-size: 14px; line-height: 1.6;
  padding-bottom: 68px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
input,textarea,select,button { font-family: inherit; }
::selection { background: var(--accent-light); color: var(--accent); }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c9cdd4; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #a9b2bd; }

/* ====== Top Nav (Mobile) ====== */
.top-nav {
  position: sticky; top:0; z-index:100;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  padding: 0 16px; height: var(--topbar-height);
  display: flex; align-items: center; justify-content: space-between;
  transition: var(--transition);
}
.top-nav .logo { font-size: 17px; font-weight: 700; color: var(--accent); display: flex; align-items: center; gap: 8px; letter-spacing: -0.3px; }
.adv-settings-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 6px; cursor: pointer;
  background: transparent; font-size: 16px; transition: var(--transition);
  border: 1px solid var(--border-light);
}
.adv-settings-btn:hover { background: var(--accent-bg); border-color: var(--accent); transform: rotate(30deg); }
.top-nav .user-info { font-size: 12px; color: var(--text2); }

/* ====== Bottom Tab Bar (Mobile) ====== */
.tab-bar {
  position: fixed; bottom:0; left:0; right:0; z-index:100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--border-light);
  display: flex; padding-bottom: env(safe-area-inset-bottom);
  overflow-x: auto;
}
.tab-bar::-webkit-scrollbar { display: none; }
.tab-item {
  flex: 1; min-width: 56px; text-align: center; padding: 8px 2px 6px;
  cursor: pointer; color: var(--text3); transition: var(--transition);
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.tab-item.active { color: var(--accent); }
.tab-item .tab-icon { font-size: 20px; line-height: 1; }
.tab-item .tab-label { font-size: 10px; font-weight: 500; white-space: nowrap; }

/* ====== Sidebar (PC) ====== */
.sidebar {
  display: none; position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width); background: #fff;
  border-right: 1px solid var(--border-light); z-index: 100;
  flex-direction: column;
}
.sidebar-logo {
  padding: 20px 18px; font-size: 17px; font-weight: 700; color: var(--accent);
  display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--border-light);
  letter-spacing: -0.3px;
}
.sidebar-nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.sidebar-item {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 16px; margin: 2px 8px; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 13px; color: var(--text2); transition: var(--transition);
  position: relative;
}
.sidebar-item:hover { background: var(--card2); color: var(--text); }
.sidebar-item.active {
  background: var(--accent-bg); color: var(--accent); font-weight: 600;
}
.sidebar-item.active::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 20px; background: var(--accent); border-radius: 0 3px 3px 0;
}
.sidebar-item .nav-icon { font-size: 17px; width: 24px; text-align: center; }
.sidebar-item .nav-step { font-size: 10px; color: var(--text3); margin-left: auto; }
.sidebar-user { padding: 14px 18px; border-top: 1px solid var(--border-light); font-size: 11px; color: var(--text3); }

/* ====== Main Content ====== */
.main { padding: 16px 16px 24px; }
.page { display: none; animation: pageIn .25s cubic-bezier(.4,0,.2,1); }
.page.active { display: block; }
@keyframes pageIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }

/* ====== Cards ====== */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow); }
.card-title {
  font-size: 15px; font-weight: 600; margin-bottom: 14px; color: var(--text);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  letter-spacing: -0.2px;
}
.section-subtitle { font-size: 12px; color: var(--text2); margin-bottom: 12px; font-weight: 400; line-height: 1.7; }

/* ====== Step Banner ====== */
.step-banner {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 16px 18px; margin-bottom: 18px;
  background: linear-gradient(135deg, var(--accent-bg) 0%, #f0f7ff 50%, #f5f0ff 100%);
  border-radius: var(--radius); border: 1px solid #d9e2ff;
  position: relative; overflow: hidden;
}
.step-banner::after {
  content: ''; position: absolute; right: -20px; top: -20px;
  width: 80px; height: 80px; border-radius: 50%;
  background: rgba(51,112,255,0.05);
}
.step-num {
  width: 34px; height: 34px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff; border-radius: 50%;
  font-size: 14px; font-weight: 700;
  box-shadow: 0 2px 8px rgba(51,112,255,0.3);
}
.step-title { font-size: 16px; font-weight: 600; color: var(--text); letter-spacing: -0.3px; }
.step-desc { font-size: 12px; color: var(--text2); margin-top: 3px; line-height: 1.6; }

/* ====== Buttons ====== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius-sm); border: none;
  font-size: 13px; font-weight: 500; cursor: pointer; transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
  position: relative; overflow: hidden;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 4px rgba(51,112,255,0.2);
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 8px rgba(51,112,255,0.3); }
.btn-outline {
  background: #fff; border: 1px solid var(--border); color: var(--text2);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-bg); }
.btn-danger { background: var(--danger); color: #fff; box-shadow: 0 2px 4px rgba(245,63,63,0.2); }
.btn-danger:hover { background: #e03e3e; }
.btn-success { background: var(--success); color: #fff; box-shadow: 0 2px 4px rgba(0,180,42,0.2); }
.btn-ghost { background: transparent; color: var(--text2); }
.btn-ghost:hover { background: var(--card2); color: var(--text); }
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: var(--radius-xs); }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; }

/* ====== Forms ====== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; color: var(--text); margin-bottom: 6px; font-weight: 500; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 10px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: #fff;
  color: var(--text); font-size: 14px; outline: none; transition: var(--transition);
}
.form-input:hover, .form-select:hover, .form-textarea:hover { border-color: #c9cdd4; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(51,112,255,0.1);
}
.form-textarea { min-height: 80px; resize: vertical; }
.form-hint { font-size: 11px; color: var(--text3); margin-top: 4px; line-height: 1.5; }
.form-row { display: flex; gap: 10px; align-items: end; }

/* ====== Tags ====== */
.tag {
  display: inline-flex; align-items: center;
  padding: 2px 10px; border-radius: 20px; font-size: 11px; font-weight: 600;
  letter-spacing: 0.2px;
}
.tag-purple { background: var(--accent-light); color: var(--accent); }
.tag-green { background: var(--success-light); color: var(--success); }
.tag-yellow { background: var(--warning-light); color: var(--warning); }
.tag-red { background: var(--danger-light); color: var(--danger); }
.tag-gray { background: var(--card2); color: var(--text2); }
.tag-blue { background: var(--info-light); color: var(--info); }
.tag-orange { background: #fff3e0; color: #e65100; }

/* ====== Upload Zone ====== */
.upload-zone {
  border: 2px dashed #d0d5dd; border-radius: var(--radius);
  padding: 32px 20px; text-align: center; cursor: pointer;
  transition: var(--transition); color: var(--text2); background: var(--card2);
  position: relative;
}
.upload-zone:hover {
  border-color: var(--accent); color: var(--accent); background: var(--accent-bg);
  box-shadow: 0 0 0 3px rgba(51,112,255,0.06);
}
.upload-zone.dragover {
  border-color: var(--accent); background: var(--accent-bg);
  box-shadow: 0 0 0 4px rgba(51,112,255,0.12);
  transform: scale(1.01);
}

/* ====== File Item ====== */
.file-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  background: var(--card2); border-radius: var(--radius-sm); margin-bottom: 8px;
  border: 1px solid transparent; transition: var(--transition);
}
.file-item:hover { border-color: var(--border); background: #fff; box-shadow: var(--shadow-sm); }
.file-item input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); }
.file-icon { font-size: 24px; flex-shrink: 0; }
.file-info { flex: 1; min-width: 0; }
.file-name { font-size: 13px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-meta { font-size: 11px; color: var(--text3); margin-top: 2px; display: flex; gap: 8px; align-items: center; }
.file-label-tag {
  display: inline-flex; align-items: center; gap: 3px;
  background: var(--accent-light); color: var(--accent);
  padding: 1px 8px; border-radius: 10px; font-size: 10px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.file-label-tag:hover { background: var(--accent); color: #fff; }

/* ====== Mapping Row ====== */
.mapping-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; margin-bottom: 6px;
  background: var(--card2); border-radius: var(--radius-sm);
  border: 1px solid transparent; transition: var(--transition);
}
.mapping-row:hover { border-color: var(--border); background: #fff; box-shadow: var(--shadow-sm); }
.mapping-row input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); }
.mapping-key { font-weight: 600; min-width: 80px; font-size: 13px; color: var(--text); }
.mapping-arrow { color: var(--accent); font-size: 14px; font-weight: 600; }
.mapping-val { flex: 1; font-size: 13px; color: var(--text2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mapping-acts { display: flex; gap: 4px; margin-left: auto; }
.btn-icon {
  background: transparent; border: none; cursor: pointer;
  font-size: 14px; padding: 4px 6px; opacity: 0.4; transition: var(--transition);
  border-radius: 4px;
}
.btn-icon:hover { opacity: 1; background: var(--card2); }

/* 双排网格 */
.mapping-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 768px) { .mapping-grid { grid-template-columns: 1fr; } }

/* ====== Data Table ====== */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th {
  background: var(--card2); font-weight: 600; padding: 12px 14px;
  text-align: left; border-bottom: 2px solid var(--border); color: var(--text2);
  white-space: nowrap; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
}
.data-table td { padding: 11px 14px; border-bottom: 1px solid var(--border-light); }
.data-table tr:hover td { background: var(--accent-bg); }

/* ====== Mapping Table ====== */
.mapping-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.mapping-table th {
  background: var(--card2); font-weight: 600; padding: 11px 14px;
  text-align: left; border-bottom: 1px solid var(--border); font-size: 12px;
  color: var(--text2); white-space: nowrap;
}
.mapping-table td { padding: 11px 14px; border-bottom: 1px solid var(--border-light); }
.mapping-table tr:hover td { background: var(--accent-bg); }

/* ====== Rules Card ====== */
.rule-card {
  padding: 12px 14px; background: var(--card2); border-radius: var(--radius-sm);
  margin-bottom: 8px; border: 1px solid transparent; transition: var(--transition);
  display: flex; align-items: center; gap: 12px;
}
.rule-card:hover { border-color: var(--border); background: #fff; box-shadow: var(--shadow-sm); }

/* ====== Preview Stats Row ====== */
.preview-stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin-bottom: 16px;
}
.preview-stat-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px;
  box-shadow: var(--shadow-sm); transition: var(--transition);
}
.preview-stat-card:hover {
  box-shadow: var(--shadow-md); transform: translateY(-1px);
}
.preview-stat-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}
.preview-stat-info { min-width: 0; }
.preview-stat-value {
  font-size: 24px; font-weight: 700; color: var(--text);
  line-height: 1.2; letter-spacing: -0.5px;
}
.preview-stat-label {
  font-size: 12px; color: var(--text3); margin-top: 2px;
  font-weight: 500;
}
@media (max-width: 768px) {
  .preview-stats-row { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .preview-stat-card { padding: 12px 14px; gap: 10px; }
  .preview-stat-value { font-size: 20px; }
  .preview-stat-icon { width: 36px; height: 36px; font-size: 16px; border-radius: 10px; }
}

/* ====== Preview Group ====== */
/* ====== Preview Dual Layout ====== */
.preview-dual-layout {
  display: flex; gap: 0; border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  background: var(--card); min-height: 500px;
}

/* Left Panel */
.preview-left-panel {
  width: 280px; flex-shrink: 0;
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  background: var(--card2);
}
.preview-left-header {
  padding: 14px 16px; font-size: 14px; font-weight: 600;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 6px;
  color: var(--text);
}
.preview-left-search {
  padding: 10px 12px; border-bottom: 1px solid var(--border-light);
}
.preview-left-list {
  flex: 1; overflow-y: auto; padding: 6px 0;
}
.preview-group-item {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; cursor: pointer;
  transition: var(--transition); user-select: none;
  border-left: 3px solid transparent;
  position: relative;
}
.preview-group-item:hover {
  background: rgba(51,112,255,0.05);
}
.preview-group-item.active {
  background: var(--accent-bg);
  border-left-color: var(--accent);
  color: var(--accent);
}
.preview-group-item.active .preview-group-item-name {
  font-weight: 600; color: var(--accent);
}
.preview-group-item-name {
  flex: 1; font-size: 13px; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.preview-group-item-count {
  font-size: 11px; color: var(--text3);
  background: var(--card); border-radius: 10px;
  padding: 1px 8px; white-space: nowrap;
  border: 1px solid var(--border-light);
  font-weight: 600;
  transition: var(--transition);
}
.preview-group-item:hover .preview-group-item-count {
  border-color: var(--accent-light);
  background: var(--accent-light);
  color: var(--accent);
}
.preview-group-item.active .preview-group-item-count {
  background: var(--accent); color: #fff;
  border-color: var(--accent);
}
.preview-group-item .key-issue-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--warning); flex-shrink: 0;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

/* Right Panel */
.preview-right-panel {
  flex: 1; overflow-y: auto; padding: 0;
  min-width: 0;
}
.preview-right-empty {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  height: 100%; min-height: 400px;
  color: var(--text3);
  padding: 40px 20px;
}
.preview-empty-icon {
  font-size: 56px; opacity: 0.2; margin-bottom: 16px;
  animation: previewFloat 3s ease-in-out infinite;
}
.preview-empty-title {
  font-size: 16px; font-weight: 600; color: var(--text2);
  margin-bottom: 6px;
}
.preview-empty-desc {
  font-size: 13px; color: var(--text3); text-align: center;
  max-width: 280px; line-height: 1.7;
}
@keyframes previewFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Global Section in Right Panel */
.preview-global-section {
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.preview-section-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; font-size: 14px; font-weight: 600;
  background: var(--card2); border-bottom: 1px solid var(--border-light);
}
.preview-global-items {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0; padding: 0;
}
.preview-global-item {
  display: flex; align-items: baseline; gap: 8px;
  padding: 10px 18px; border-bottom: 1px solid var(--border-light);
  font-size: 13px;
}
.preview-global-item:last-child { border-bottom: none; }
.preview-global-key {
  color: var(--text2); min-width: 80px; flex-shrink: 0;
}
.preview-global-val {
  color: var(--text); font-weight: 500; word-break: break-all;
}

/* Group Detail in Right Panel */
.preview-detail-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; background: var(--card2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.preview-detail-title {
  font-size: 15px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.preview-detail-actions {
  display: flex; gap: 6px;
}
.preview-detail-table-wrap {
  padding: 0; overflow-x: auto;
}

/* Toolbar */
.preview-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; margin-bottom: 12px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius);
  flex-wrap: wrap; gap: 8px;
}
.preview-toolbar-left {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
}
.preview-toolbar-right {
  display: flex; gap: 6px; align-items: center;
}
.preview-toolbar-stat {
  font-size: 12px; color: var(--text2);
}

/* Edited cell highlight */
.preview-data-table td.edited {
  background: var(--info-light) !important;
  position: relative;
}
.preview-data-table td.edited::after {
  content: '✏️'; position: absolute; right: 2px; top: 2px;
  font-size: 9px; opacity: .6;
}

/* Mobile responsive: stack vertically */
@media (max-width: 768px) {
  .preview-dual-layout {
    flex-direction: column;
  }
  .preview-left-panel {
    width: 100%; border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 200px;
  }
  .preview-right-panel {
    min-height: 300px;
  }
}

.preview-group {
  margin-bottom: 12px; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border);
}
.preview-group-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--card2); cursor: pointer;
  transition: var(--transition); user-select: none;
}
.preview-group-header:hover { background: var(--accent-bg); }
.preview-group-title { font-size: 14px; font-weight: 600; color: var(--text); }
.preview-group-body { padding: 0; }

/* ====== Preview Data Table ====== */
.preview-data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.preview-data-table th {
  background: linear-gradient(180deg, #f0f5ff 0%, #e8f0ff 100%);
  font-weight: 600; padding: 11px 14px;
  text-align: left; color: var(--accent); font-size: 12px;
  border-bottom: 2px solid #d0dfff; white-space: nowrap;
  position: sticky; top: 0; z-index: 2;
  text-transform: uppercase; letter-spacing: 0.3px;
}
.preview-data-table td {
  padding: 10px 14px; border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.preview-data-table tr:nth-child(even) td { background: rgba(247,248,250,0.5); }
.preview-data-table tr:hover td { background: var(--accent-bg) !important; }
.preview-data-table td.editable {
  cursor: pointer; position: relative;
}
.preview-data-table td.editable:hover {
  background: var(--accent-bg); outline: 1px dashed var(--accent);
  outline-offset: -2px;
}
.preview-data-table td.editing {
  padding: 0;
}
.preview-data-table td.editing input {
  width: 100%; padding: 10px 14px; border: 2px solid var(--accent);
  background: #fff; font-size: 13px; outline: none;
  border-radius: 0;
}

/* ====== Global Data Item ====== */
.global-data-item {
  display: flex; align-items: center; padding: 10px 14px;
  background: var(--card2); border-radius: var(--radius-sm); margin-bottom: 6px;
  border: 1px solid transparent; transition: var(--transition);
}
.global-data-item:hover { border-color: var(--border); background: #fff; }
.global-data-key {
  font-weight: 600; min-width: 120px; font-size: 13px; color: var(--text);
}
.global-data-val { flex: 1; font-size: 13px; color: var(--text2); }

/* ====== Empty State ====== */
.empty-state {
  text-align: center; padding: 32px 16px; color: var(--text3);
}
.empty-icon { font-size: 36px; margin-bottom: 8px; opacity: .5; }
.empty-state > div:last-child { font-size: 13px; }

/* ====== Modal ====== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  z-index: 200; display: none; align-items: center; justify-content: center;
  padding: 16px; animation: fadeIn .15s;
}
.modal-overlay.show { display: flex; }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
.modal {
  background: #fff; border-radius: var(--radius); padding: 24px;
  width: 100%; max-width: 460px; max-height: 85vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalIn .2s cubic-bezier(.4,0,.2,1);
}
@keyframes modalIn { from{opacity:0;transform:scale(.95) translateY(10px)} to{opacity:1;transform:scale(1) translateY(0)} }
.modal-title {
  font-size: 17px; font-weight: 600; margin-bottom: 16px; color: var(--text);
  letter-spacing: -0.3px;
}
.modal-footer {
  display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px;
}

/* ====== Toast ====== */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 300; min-width: 200px; max-width: 400px;
  padding: 12px 20px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; text-align: center;
  box-shadow: var(--shadow-lg);
  animation: toastIn .25s cubic-bezier(.4,0,.2,1);
  pointer-events: none;
}
.toast.success { background: var(--success); color: #fff; }
.toast.error { background: var(--danger); color: #fff; }
.toast.info { background: var(--info); color: #fff; }
.toast.warning { background: var(--warning); color: #fff; }
@keyframes toastIn { from{opacity:0;transform:translateX(-50%) translateY(-12px)} to{opacity:1;transform:translateX(-50%) translateY(0)} }

/* ====== Files Grid ====== */
.files-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 768px) { .files-grid { grid-template-columns: 1fr; } }

/* ====== Export Item ====== */
.export-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  background: var(--card2); border-radius: var(--radius-sm); margin-bottom: 8px;
  border: 1px solid transparent; transition: var(--transition);
  cursor: default;
}
.export-item:hover { border-color: var(--border); background: #fff; }

/* ====== Progress Bar ====== */
.progress-bar {
  background: var(--border); border-radius: 4px; height: 6px; overflow: hidden;
}
.progress-fill {
  height: 100%; background: linear-gradient(90deg, var(--accent) 0%, var(--accent2) 100%);
  border-radius: 4px; transition: width .3s cubic-bezier(.4,0,.2,1);
}

/* ====== Collapsible Card ====== */
.collapsible-card .collapsible-header { cursor: pointer; user-select: none; }
.collapse-toggle {
  font-size: 11px; color: var(--text3); font-weight: 400;
  transition: var(--transition);
}

/* ====== Template Preview ====== */
.template-preview-table {
  border-collapse: collapse; width: 100%; font-size: 12px;
}
.template-preview-table td, .template-preview-table th {
  border: 1px solid var(--border); padding: 6px 10px; min-width: 60px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 150px; transition: var(--transition);
}
.template-preview-table th {
  background: var(--card2); font-weight: 500; color: var(--text2);
}
.template-preview-table td:hover {
  outline: 2px solid var(--accent); outline-offset: -2px;
  cursor: pointer;
}
.template-preview-table td.matched {
  background: var(--accent-bg); position: relative;
}
.template-preview-table td.matched::after {
  content: '✓'; position: absolute; top: 1px; right: 3px;
  font-size: 9px; color: var(--accent); font-weight: 700;
}
.template-preview-table td.detail-start {
  background: var(--success-light); position: relative;
}
.template-preview-table td.detail-start::after {
  content: '↓'; position: absolute; top: 1px; right: 3px;
  font-size: 9px; color: var(--success); font-weight: 700;
}

/* ====== Extract Stats ====== */
.extract-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px; margin-bottom: 16px;
}
.stat-card {
  padding: 14px; background: var(--card2); border-radius: var(--radius-sm);
  text-align: center; border: 1px solid transparent;
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--border); }
.stat-value { font-size: 22px; font-weight: 700; color: var(--accent); letter-spacing: -1px; }
.stat-label { font-size: 11px; color: var(--text3); margin-top: 2px; }

/* ====== Quick Action Bar ====== */
.quick-actions {
  display: flex; gap: 8px; flex-wrap: wrap; padding: 10px 16px;
  background: var(--card2); border-radius: var(--radius-sm);
  margin-bottom: 14px; border: 1px solid var(--border-light);
  align-items: center;
}
.quick-actions .divider {
  width: 1px; height: 20px; background: var(--border); margin: 0 4px;
}

/* ====== Responsive ====== */
@media (min-width: 768px) {
  body { padding-bottom: 0; }
  .top-nav { display: none; }
  .tab-bar { display: none; }
  .sidebar { display: flex; }
  .main {
    margin-left: var(--sidebar-width);
    padding: 24px 28px;
    min-height: 100vh;
    max-width: 1200px;
  }
}

/* ====== Utility ====== */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text3); }
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-4 { margin-bottom: 4px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: 4px; }
.gap-6 { gap: 6px; }
.gap-8 { gap: 8px; }
.gap-10 { gap: 10px; }
.gap-12 { gap: 12px; }
.p-0 { padding: 0; }
.w-full { width: 100%; }
.relative { position: relative; }
.overflow-auto { overflow: auto; }
.font-bold { font-weight: 700; }
.cursor-pointer { cursor: pointer; }
.select-none { user-select: none; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ====== Rule Items ====== */
.rule-item {
  padding: 12px 14px; background: var(--card2); border-radius: var(--radius-sm);
  margin-bottom: 8px; border: 1px solid transparent; transition: var(--transition);
}
.rule-item:hover { border-color: var(--border); background: #fff; box-shadow: var(--shadow-sm); }
.rule-header {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  flex-wrap: wrap;
}
.rule-field {
  font-size: 14px; font-weight: 600; color: var(--text);
}
.rule-detail {
  font-size: 12px; color: var(--text2); margin-top: 6px; line-height: 1.6;
}
.rule-detail .tag { margin-left: 4px; vertical-align: middle; }

/* ====== Rule Template Card ====== */
.rule-template-card {
  padding: 12px 14px; background: var(--card2); border-radius: var(--radius-sm);
  margin-bottom: 8px; border: 1px solid transparent; transition: var(--transition);
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.rule-template-card:hover { border-color: var(--border); background: #fff; }

/* ====== Nav Step Progress (Mobile) ====== */
.step-progress {
  display: flex; align-items: center; gap: 0; padding: 0 16px; margin-bottom: 16px;
  overflow-x: auto;
}
.step-progress::-webkit-scrollbar { display: none; }
.step-progress-item {
  display: flex; align-items: center; gap: 6px;
  white-space: nowrap; font-size: 11px; color: var(--text3);
  padding: 6px 10px; transition: var(--transition);
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.step-progress-item.active { color: var(--accent); font-weight: 600; }
.step-progress-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--border);
  transition: var(--transition);
}
.step-progress-item.active .step-progress-dot {
  background: var(--accent); box-shadow: 0 0 0 3px rgba(51,112,255,0.2);
}
.step-progress-line {
  width: 16px; height: 2px; background: var(--border);
}
.step-progress-item.done + .step-progress-line { background: var(--accent); }

/* ====== Match Stats ====== */
.match-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px;
}
.match-stat-card {
  padding: 12px 14px; border-radius: var(--radius-sm);
  text-align: center; transition: var(--transition);
}
.match-stat-card.success { background: var(--success-light); color: var(--success); }
.match-stat-card.fail { background: var(--danger-light); color: var(--danger); }
.match-stat-value { font-size: 20px; font-weight: 700; }
.match-stat-label { font-size: 11px; opacity: 0.8; margin-top: 2px; }

/* ====== Inline Edit ====== */
.inline-edit-group {
  display: flex; align-items: center; gap: 4px;
}
.inline-edit-input {
  padding: 4px 8px; border: 1px solid var(--accent); border-radius: 4px;
  font-size: 13px; outline: none; width: auto;
}
.inline-edit-save, .inline-edit-cancel {
  padding: 4px 8px; border: none; border-radius: 4px; font-size: 11px;
  cursor: pointer; font-weight: 500;
}
.inline-edit-save { background: var(--accent); color: #fff; }
.inline-edit-cancel { background: var(--card2); color: var(--text2); }

/* ====== Keyboard Shortcut Hint ====== */
.kbd {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1px 6px; background: var(--card2); border: 1px solid var(--border);
  border-radius: 4px; font-size: 11px; font-family: monospace;
  color: var(--text3); line-height: 1.6;
}

/* ====== Processing Type Badge ====== */
.process-type-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 10px; border-radius: 12px; font-size: 11px;
  font-weight: 600;
}
.process-type-badge.date { background: #fff7e8; color: #ff7d00; }
.process-type-badge.number { background: #e8ffea; color: #00b42a; }
.process-type-badge.text { background: #e8f7ff; color: #168cff; }
.process-type-badge.format { background: #f5f0ff; color: #722ed1; }
.process-type-badge.dict { background: #e8f0ff; color: #3370ff; }

/* ====== Animations ====== */
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }
.anim-pulse { animation: pulse 1.5s infinite; }

@keyframes slideUp { from{opacity:0;transform:translateY(12px)} to{opacity:1;transform:translateY(0)} }
.anim-slide-up { animation: slideUp .3s cubic-bezier(.4,0,.2,1); }

/* ====== Print ====== */
@media print {
  .sidebar, .top-nav, .tab-bar, .quick-actions { display: none !important; }
  .main { margin: 0; padding: 16px; }
  .card { box-shadow: none; border: 1px solid #ddd; break-inside: avoid; }
}

/* ====== Missing Classes - Collapsible Card ====== */
.collapsible-card { overflow: hidden; }
.collapsible-content { overflow: hidden; transition: max-height .3s ease; }
.collapsible-card .collapsible-header { cursor: pointer; user-select: none; }
.collapsible-card .collapsible-header:hover { opacity: .85; }

/* ====== Toast Container ====== */
.toast-container {
  position: fixed; top: 70px; right: 16px; z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
  max-width: 360px; pointer-events: none;
}
.toast-container .toast { pointer-events: auto; }

/* ====== Form Input / Select (standalone, not inside form-group) ====== */
.form-input {
  width: 100%; padding: 10px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: #fff;
  color: var(--text); font-size: 14px; outline: none; transition: var(--transition);
}
.form-input:hover { border-color: #c9cdd4; }
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(51,112,255,0.1); }
.form-select {
  width: 100%; padding: 10px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: #fff;
  color: var(--text); font-size: 14px; outline: none; transition: var(--transition);
  appearance: auto;
}
.form-select:hover { border-color: #c9cdd4; }
.form-select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(51,112,255,0.1); }

/* ====== Layout Helpers ====== */
.flex-1 { flex: 1; min-width: 0; }
.gap-16 { gap: 16px !important; }

/* ====== Field Pill (紧凑标签) ====== */
.field-pill-wrap { display: flex; flex-wrap: wrap; gap: 6px; }
.field-pill {
  display: inline-flex; align-items: center; gap: 2px;
  padding: 3px 8px; background: var(--card2); border-radius: 14px;
  border: 1px solid var(--border-light); font-size: 12px;
  transition: var(--transition); cursor: default; line-height: 1.5;
}
.field-pill:hover { border-color: var(--accent); background: #fff; }
.field-pill-name { font-weight: 500; color: var(--text1); }
.field-pill-pos { color: var(--text3); font-size: 11px; margin-left: 2px; }
.field-pill-repeat { font-size: 10px; margin-left: 1px; }
.field-pill-del {
  display: none; background: none; border: none; color: var(--danger);
  font-size: 13px; font-weight: bold; cursor: pointer; padding: 0 2px;
  margin-left: 2px; line-height: 1; border-radius: 50%;
}
.field-pill:hover .field-pill-del { display: inline-flex; }

/* ====== Mapping Item ====== */
.mapping-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; background: var(--card2); border-radius: var(--radius-xs);
  margin-bottom: 6px; border: 1px solid var(--border-light);
  transition: var(--transition);
}
.mapping-item:hover { border-color: var(--border); background: #fff; }

/* ====== Export Downloads / History ====== */
.export-downloads { display: flex; flex-direction: column; gap: 6px; }
.export-history-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; background: var(--card2); border-radius: 8px;
  margin-bottom: 8px; border: 1px solid transparent;
  transition: border-color .2s;
}
.export-history-item:hover { border-color: var(--border); }

/* ====== Extract Summary ====== */
.extract-summary {
  display: flex; gap: 12px; overflow-x: auto;
  padding-bottom: 4px;
}
.summary-item {
  flex: 1; min-width: 80px; text-align: center;
  padding: 12px 8px; background: var(--card2); border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}
.summary-value {
  font-size: 20px; font-weight: 700; color: var(--accent);
  line-height: 1.2;
}
.summary-label {
  font-size: 11px; color: var(--text3); margin-top: 4px;
  font-weight: 500;
}
.summary-row {
  display: flex; gap: 8px; flex-wrap: wrap;
}

/* ====== Preview Summary Row (table footer) ====== */
.preview-summary-row td {
  font-weight: 700; border-top: 2px solid var(--text) !important;
  color: var(--accent); background: var(--accent-bg) !important;
}

/* ====== Template Item ====== */
.template-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: #fff;
  cursor: pointer; transition: var(--transition); margin-bottom: 6px;
}
.template-item:hover { border-color: var(--accent); background: var(--accent-bg); }
.template-item.selected { border-color: var(--accent); background: var(--accent-bg); box-shadow: 0 0 0 2px rgba(51,112,255,0.15); }

/* ====== Sortable / Drag ====== */
.sortable-item { transition: background .15s, box-shadow .15s; }
.sortable-item.dragging { opacity: .5; background: var(--accent-bg) !important; }
.drag-handle {
  cursor: grab; padding: 2px 4px; user-select: none;
  color: var(--text3); font-size: 14px; line-height: 1;
}
.drag-handle:active { cursor: grabbing; }

/* ====== Added Field Item ====== */
.added-field-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; background: var(--success-light);
  border-radius: 6px; margin-bottom: 4px;
  font-size: 13px;
}

/* ====== Batch Field Label ====== */
.batch-field-label {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; border-radius: 6px; cursor: pointer;
  background: #fff; border: 1px solid var(--border);
  margin-bottom: 4px; transition: var(--transition);
}
.batch-field-label:hover { border-color: var(--accent); background: var(--accent-bg); }

/* ====== Cell Badge ====== */
.cell-badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-family: monospace; font-size: 12px; cursor: pointer;
  background: #e3f2fd; color: #1976d2;
  transition: var(--transition);
}
.cell-badge:hover { background: #bbdefb; }

/* ====== Checkbox Helpers ====== */
.exportGroupCheck, .export-history-check, .globalDataCheck, .mappingCheck, .mergeTableCheck, .batchFieldCheck, .templateRadio {
  accent-color: var(--accent);
}

/* ====== Rules Preview ====== */
.preview-data-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
.preview-data-table th {
  background: var(--card2); font-weight: 600; text-align: left;
  padding: 8px 10px; border-bottom: 2px solid var(--border);
  white-space: nowrap; color: var(--text2);
}
.preview-data-table td {
  padding: 6px 10px; border-bottom: 1px solid var(--border);
  max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.preview-data-table tr:hover td { background: var(--accent-bg); }

.preview-group { margin-bottom: 8px; border-radius: 8px; overflow: hidden; }
.preview-group-header {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; background: var(--card2); font-weight: 600;
  font-size: 14px; cursor: pointer; transition: background .2s;
}
.preview-group-header:hover { background: var(--bg2); }
.preview-group-title { flex: 1; }
.preview-group-body { padding: 8px 14px 14px; }

.global-data-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; border-radius: 6px; margin-bottom: 4px;
  background: var(--card2); font-size: 13px;
}
.global-data-key { font-weight: 600; color: var(--text2); min-width: 80px; }
.global-data-val { color: var(--text); flex: 1; }

.extract-summary { margin-bottom: 12px; }
.summary-row { display: flex; gap: 12px; flex-wrap: wrap; }
.summary-item {
  flex: 1; min-width: 80px; text-align: center;
  padding: 12px 8px; background: var(--card2); border-radius: 8px;
}
.summary-value { font-size: 24px; font-weight: 700; color: var(--accent); }
.summary-label { font-size: 11px; color: var(--text3); margin-top: 4px; }